CN104884707A - Security-marked web - Google Patents
Security-marked web Download PDFInfo
- Publication number
- CN104884707A CN104884707A CN201280075511.9A CN201280075511A CN104884707A CN 104884707 A CN104884707 A CN 104884707A CN 201280075511 A CN201280075511 A CN 201280075511A CN 104884707 A CN104884707 A CN 104884707A
- Authority
- CN
- China
- Prior art keywords
- web
- additive
- change
- covering
- web0
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
- B41M3/14—Security printing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
- B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
- B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
- B42D25/30—Identification or security features, e.g. for preventing forgery
- B42D25/36—Identification or security features, e.g. for preventing forgery comprising special materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
- B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
- B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
- B42D25/40—Manufacture
- B42D25/405—Marking
- B42D25/41—Marking using electromagnetic radiation
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/40—Agents facilitating proof of genuineness or preventing fraudulent alteration, e.g. for security paper
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/40—Agents facilitating proof of genuineness or preventing fraudulent alteration, e.g. for security paper
- D21H21/44—Latent security elements, i.e. detectable or becoming apparent only by use of special verification or tampering devices or methods
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/40—Agents facilitating proof of genuineness or preventing fraudulent alteration, e.g. for security paper
- D21H21/44—Latent security elements, i.e. detectable or becoming apparent only by use of special verification or tampering devices or methods
- D21H21/48—Elements suited for physical verification, e.g. by irradiation
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Health & Medical Sciences (AREA)
- Electromagnetism (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Laser Beam Processing (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Abstract
A method of producing markings on a web (WEB1) comprises: - forming a first base portion (DOT0) in a primary web (WEB0) by locally altering at least one optical property of the primary web (WEB0) with a first laser beam (LB1), and - forming a covered web (WEB1) by covering and/or impregnating the primary web (WEB0) with an additive (AD1) after the first base portion (DOT0) has been formed, wherein the primary web (WEB0) comprises cellulose fibers, the covered web (WEB1) comprises an optically detectable first altered portion (DOT1), the first altered portion (DOT1) comprises the first base portion (DOT0) and an amount of additive (AD1) bound to the first base portion (DOT0), and the composition of the additive (AD1) has been selected such that exposing the covered web (WEB1) to a second laser beam (LB2) causes an optically detectable alteration of the additive (AD1) contained in the covered web (WEB1) in a situation where the intensity of the second laser beam (LB2) is equal to a minimum threshold intensity (IMIN,1) needed to cause optically detectable alteration of the primary web (WEB0) contained in the covered web (WEB1).
Description
Technical field
The present invention relates to paper web or the board web of producing and comprising one or more security sign.
Summary of the invention
As everyone knows, paper document can comprise watermark to improve the visual appearance of document or to make forgery document more difficult.
Summary of the invention
Target of the present invention is to provide a kind of method for producing mark on paper web or board web.Target of the present invention is to provide the paper web or board web that comprise one or more mark.
According to a first aspect of the invention, a kind of method for the production of paper web or board web according to claim 1 is provided.
According to a second aspect of the invention, a kind of paper web according to claim 27 or board web is provided.
Main web layers available laser bundle marks.This layer and this mark can be covered with protective additive and/or are flooded (impregnate) to provide the web through covering comprising security sign subsequently.If someone have modified security sign, or attempt this security sign of amendment in later phases, then the web through covering can have the ability providing optics to indicate.
Security sign can comprise one or more through covering through change part.Each through cover through change part by changing structure and/or the chemical composition of main web by laser beam local, and cover with additive subsequently and/or flood and formed through change part and main web.Main web can be called as foundation through change part.
Being included in main web in the web through covering may by additive treating, makes laser beam have to be mutual with main web through additive.Therefore, additive can serve as protection so that main web can not mark with the laser through additive and not cause clear evidence mark on this additive.The composition of additive can be selected such that to be exposed to that laser beam causes this additive optically can detect change.The composition of additive can be selected such that the spectral quality of this additive changes when this additive is exposed to intense laser beam.Additive can such as change color and/or it can lose its photoluminescent property.
Through cover web can comprise first foundation part, its can by the first laser beam with additive cover and/or dipping come to be formed.Therefore, the additive being bonded to first foundation part is not yet modified because being exposed to the first laser beam.
The main web be included in the web through covering can be buried under additive, thus buried main web can be modified by means of only use second laser beam or by introducing to contact with the web through covering through heating stamp.
But if there is people to attempt to produce second (vacation) foundation by the web guided to by the second laser beam through covering, then the second laser beam is inevitably also mutual with additive.Therefore, that attempts producing that further mark may cause additive in later phases optically can detect change.When produced web comprises each several part had through the additive of change, this may be the instruction having produced additional marking after main web has been added agent covering and/or dipping.The web produced can be monitored by (such as by eyes or pass through imageing sensor) optically, to detect each several part whether this web comprise the additive had through change.
Even if the parameter of the second laser beam will be selected such that the second foundation may have the optical property identical with first foundation part, the additive be superimposed upon in the second foundation will optically be different from the additive be superimposed upon in first foundation part, and because the additive be superimposed upon in the second foundation is exposed to laser emission, the additive be superimposed upon in first foundation part is not yet exposed to laser emission.
Such as, when being exposed to UV laser beam, additive can be arranged to lose its photoluminescent property.Additive can be arranged to the heating because the absorption of laser beam causes and cause losing its photoluminescent property.Additive can be arranged to the heating because the absorption of laser beam causes and cause changing its color.Additive can be arranged to present flavescence or photobleaching when being exposed to laser beam.
Such as, the paper document of product or packaging can comprise the web through covering, and it comprises security sign.Web through covering can be cut into thin slice such as to be formed for the ticket of medicament or label.Security sign can indicate such as trade name, name, date mark or page number.
By at the suitable cover layer of the applied on top of main web (such as, comprising starch gluing and/or the pigment coating of additive), the foundation manufactured in main web through change can by effectively " sealing ".Therefore, foundation amendment and/or produce further foundation and can become very difficult or impossible.Forging security sign may be difficulty or impossible, because the optics change of additive can indicate this to mark whether to be modified after covering with this additive and/or flooding.Produce and mark further and do not cause the change of the optics of additive may be difficulty or impossible when not removing previous additive and again covering main web by new additive layer.
Web with security sign can such as by using the modified paper machine being equipped with laser marking equipment easily to produce in enormous quantities with low cost.In one embodiment, use after by modified paper machine production web add-on security printer or security converter optional.
In one embodiment, the web through covering optionally can be included in further (that is, the factory manufactures) mark covering with additive and/or formed by laser beam after flooding main web.This marks further and the forgery of document can be made more difficult.
If adulterator wants to produce mark (itself and original marking are optically identical) through distorting, he usually should have about when production original marking by the knowledge of laser parameter used.Laser parameter can be that such as intensity, pulse last and wavelength.Laser parameter can be maintained secrecy, thus the people that document is forged in attempt may need to carry out experience test to find applicable laser parameter.If to him, adulterator only expects that a piece of paper (namely for document) distorted has access right, then he can not use described document to be used for carrying out this experience test usually.
The composition of additive can be selected such that the violent heating of this additive changes at least one optical property of this additive.If someone attempts to contact with the web through covering change buried main web by introducing hot stamp, then this may change shallow table additive layer.Therefore, the additive through changing can indicate and produce second (vacation) foundation after main web is added agent covering and/or dipping.
Can allow higher spatial resolution with laser beam as mark, namely marking with laser beam to provide the foundation narrower compared to the foundation by using hot stamp instrument to cause conductive heater possible.Hot stamp is made to contact the mark that may produce and have border fuzzy a little with the web through covering.
The authenticity comprising the mark of the part through change through covering can such as check by this mark and reference marker being compared.Such as, manufacturer, client or the government can access a slice web, and this sheet web comprises reference marker.The authenticity of this mark can also such as check based on the information from database retrieval.This information such as can specify the part position relative to each other through change.Manufacturer, client or the government such as can visit this information via internet.
In one embodiment, web through covering can comprise the mark through combination, this mark through combination comprise to cover with additive and/or dipping one or more first through the part of change, and apply after additive by laser formed one or more second through the part of change.The described mark through combination can be called as such as mixed mark.Such as, mark MRK1, MRK2 shown in Fig. 1 b can form mixed mark together.Mixed mark can be formed by the some parts through change produced in the different phase manufacturing paper web.The forgery of mixed mark may be very difficult, because accurately copy or revise the knowledge that mixed mark may require the process parameter of high quantity.Mixed mark through change can represent such as graphical symbol.Particularly, mixed mark can represent such as alphabetic code.First can have relative to second through the size of part of change and/or the pre-sizing of position and/or position through the part of change.First is different from second through the optical property of the part of change through the optical property of part of change.First through change part with second through change part can together with form graphical symbol.First of mixed mark can presentation graphic symbol through the part of change, and second of same mixed mark can represent substantially the same graphical symbol through the part of change.In one embodiment, first can be different from second through the visual appearance of the part of change, to be convenient to when web visible ray and/or ultraviolet light irradiate check mixed mark by bore hole through the visual appearance of part of change.In one embodiment, the first difference between the optical property of the part of optical property and second through change of the part of change can detect by means of only using special optical device (such as passing through to use microscope or optical spectrum analyser).
Whether the position that the authenticity of inspection mixed mark can comprise the part through change checking mixed mark matches with the position of being specified by reference marker substantially.
In one embodiment, first determines by algorithm through the position of the position of the part of change relative to second through the part of change.Second determines by using algorithm through the size of part of change and/or the size of position and/or position relative to first through the part of change, and this algorithm is based on the use of (secret) password.Therefore, if there is people to attempt revising mixed mark by forming additional second through the part of change, then this additional second does not match with the position provided by algorithm through the position of the part of change.Check that the authenticity of mixed mark can comprise inspection first and second and whether match with the position provided by this algorithm through the position of the part of change.
In order to improve safety grades further, by applying two or more cover layers in main web, the forgery of mark may be more difficult.One or more first can cover with the first additive through the part of change and/or formed before flooding.One or more second through change part can with first additive cover and/or dipping after but with Second addition cover and/or dipping before formed (the first additive and Second addition can have identical chemical composition or different chemical composition).
In order to improve safety grades further, formed before the mark of combination can be included in applying first additive one or more first through change part, formed after applying first additive one or more second through the part of change and the apply to be formed after Second addition the one or more 3rd through the part of change.Second through change part can applying Second addition before be formed.The composition of the first additive and Second addition can be selected such that at least one optical property of this additive changes when being exposed to intense laser beam.Therefore, the first additive can be used as the protection to the following bottom of the first additive, and same Second addition can be used as the protection of layer to the first additive and other bottom.In one embodiment, the web through covering can comprise three or more superposition additive layer, and wherein each additive layer can be used as the protection to the mark realized in each bottom.
Accompanying drawing explanation
In the following example, with reference to accompanying drawing embodiment of the present invention will be described in more detail, in the accompanying drawings:
Fig. 1 a shows the web comprising the first mark with top view,
Fig. 1 b shows the web comprising modified mark with top view,
Fig. 2 a shows with 3-D view and checks web by bore hole,
Fig. 2 b shows with 3-D view and checks web by optical sensor,
Fig. 3 a assigns to form first foundation part with the cross-sectional side view structure and/or one-tenth shown by changing main web with laser beam,
Fig. 3 b shows the web of the part through change comprised through covering with cross-sectional side view,
Fig. 4 shows the web comprising the dissimilar part through change through covering with cross-sectional side view,
Fig. 5 shows with cross-sectional side view and produces the second foundation by the web guided to by the second laser beam through covering,
Fig. 6 a shows the strength range for Fluorophotometry by example,
Fig. 6 b shows the strength range for Fluorophotometry by example,
Fig. 7 a shows from by the fluorescence of the web of UV-irradiation with 3-D view,
Fig. 7 b shows from by the fluorescence of the web of UV-irradiation with cross-sectional side view,
Fig. 8 a shows the fluorescence spectrum of reference section by example,
Fig. 8 b shows the fluorescence spectrum of the part through change through covering by example,
Fig. 8 c shows second through the fluorescence spectrum of part of change by example,
Fig. 9 a shows the strength range for changing color by example,
Fig. 9 b shows the light from web reflection with cross-sectional side view,
Figure 10 a shows the spectrum from reference section reflection by example,
Figure 10 b shows the spectrum from the reflection of the part through change through covering by example,
Figure 10 c shows the spectrum reflected through the part of change from second by example,
Figure 11 a shows the strength range for changing color,
Figure 11 b shows from the fluorescence of web and the light from web reflection with cross-sectional side view,
Figure 12 a shows the strength range for Fluorophotometry, and for changing the strength range of color,
Figure 12 b shows from the fluorescence of web and the light from web reflection with cross-sectional side view,
Figure 13 a shows with cross-sectional side view and in main web, produces hole by laser beam,
Figure 13 b shows by covering with additive and/or flooding main web to be formed the web through covering with cross-sectional side view,
Figure 13 c shows the web through covering comprising the hole of filling with additive with cross-sectional side view,
Figure 14 a shows with cross-sectional side view and produce hole in the web through covering,
Figure 14 b shows the light reflected from the web of Figure 14 a with cross-sectional side view,
Figure 15 shows through the contrast between the part and reference section of change by example,
Figure 16 shows the step for the production of paper web or board web,
Figure 17 shows and comprises laser instrument marking arrangement and for providing the device of the unit of additive,
Figure 18 a shows the web through covering of the part comprised through change with cross-sectional side view,
Figure 18 b shows the web through covering of the part comprised through change with cross-sectional side view,
Figure 18 c shows the web through covering comprised through change part with cross-sectional side view,
Figure 19 shows the laser apparatus for generation of mark,
Figure 20 shows the laser apparatus for generation of mark,
Figure 21 shows provides some separately controllable laser beams,
Figure 22 shows the laser apparatus for generation of mark,
Figure 23 a shows the web through covering comprising multiple same tag with 3-D view,
Figure 23 b shows the web through covering comprising some not isolabelings with 3-D view,
Figure 23 c shows the web through covering of wherein surrounding the part through change with the area of additive treating with 3-D view,
Figure 23 d shows the web through covering comprising mixed mark with 3-D view,
Figure 23 e shows the web through covering comprising mixed mark with 3-D view, and
Figure 23 e shows the web through covering comprising mixed mark with 3-D view.
Describe in detail
With reference to Fig. 1 a, the web WEB1 through covering can comprise the first mark MRK1.First mark MRK1 can comprise one or more part DOT1 through change through covering.First mark MRK1 can comprise one or more part DOT1 through change through covering.Article ITE1 can comprise the web WEB1 of a slice through covering.ITE1 can comprise mark MRK1.
The part DOT1 through change through covering by being changed structure and/or the composition of main web WEB0 by laser beam, and by covering with protective additive AD1 subsequently and/or flooding main web WEB0 to produce (see Fig. 3 a and 3b).In other words, the web WEB1 through covering by additive A D1 is provided thus main web WEB0 and first foundation part DOT0 additive A D1 floods and/or thus main web WEB0 and first foundation part DOT0 to cover with the layer comprising additive A D1 and formed.Often once the part DOT1 through change covered by changing structure and/or the chemical composition of main web WEB0 by laser beam LB1 local, and by covering with additive A D1 subsequently and/or flooding main web WEB0 thus part DOT0 additive A D1 through changing covers and/or floods and produces.
Additive A D1 can be applied in thus the part DOT0 through change of main web WEB0 and cover around (without change) the area additive A D1 of the part DOT0 through change and/or flood.Additive A D1 can be applied in thus the part DOT0 through change of main web WEB0 and come substantially to cover simultaneously and/or flood around (without change) the area additive A D1 of the part DOT0 through change.In one embodiment, the whole surperficial useful additives AD1 of main web WEB0 covers and/or floods substantially.
Main web WEB0 directly can contact with additive A D1, but this is optional.One or more intermediate layer can between main web WEB0 and the layer comprising additive A D1.The part DOT1 through change through covering comprises the optically detectable foundation DOT0 formed by laser beam, and is bonded to a certain amount of additive A D1 of foundation DOT0.Additive A D1 directly can be bonded to foundation DOT0, or additive A D1 is incorporated in foundation DOT0 by one or more intermediate layer.Additive A D1 in visible state phase (regime) and/or spectrum ultraviolet light state mutually in can be transparent or semitransparent, thus optics change foundation equally can with additive A D1 cover and/or dipping after be detected optically.
Flooding main web WEB0 with additive A D1 can be the material layer comprising this additive by the surface transformation of main web.When main web is flooded with additive A D1, removing of additive may be very difficult or impossible.
Web WEB1 through covering and/or article ITE1 can comprise one or more part DOT1 through change through covering.First mark MRK1 can comprise one or more part DOT1 through change through covering.One or more part DOT1 through change through covering can form the first mark MRK1 together.First mark MRK1 can be made up of one or more part DOT1 through change through covering.First mark MRK1 also can be called as such as original marking, real mark, the mark through covering, the mark through covering or the mark through sealing.
SX, SY and SZ represent orthogonal direction.Direction SZ is illustrated in such as Fig. 2 a.
The method that web WEB1 produces mark can comprise:
-in main web WEB0, form first foundation part DOT0 by least one optical property changing main web WEB0 with the first laser beam LB1 local, and
-by additive A D1 is provided thus main web WEB0 and first foundation part DOT0 additive A D1 floods and/or thus main web WEB0 and the first foundation part DOT0 layer comprising this additive A D1 cover thus formed through cover web WEB1,
-wherein main web WEB0 comprise cellulose fibre, through cover web WEB1 comprise optically detectable first through change part DOT1, first comprises first foundation part DOT0 and a certain amount of additive A D1 being bonded to first foundation part DOT0 through the part DOT1 of change, and the composition of additive A D1 has been selected such that main web WEB0's in the web WEB1 that the intensity of the second laser beam LB2 wherein equals to cause to be included in through covering optically can detect in the situation of the minimum threshold strength IMIN1 needed for change, what the web WEB1 through covering is exposed to the additive A D1 in the web WEB1 that the second laser beam LB2 causes being included in through covering optically can detect change.
With reference to Fig. 1 b, the web WEB1 through covering can comprise the second mark MRK2.Second mark MRK2 can comprise one or more second through change part DOT2, this second through change part DOT2 formed after main web WEB0 has covered with protective additive AD1 and/or flooded by laser beam.The composition of additive A D1 can be selected such that to be exposed at least one optical property that intense laser beam changes additive A D1.Therefore, the existence through the additive of change can indicate after covering with additive A D1 and/or flooding, and the web through covering is exposed to intense laser radiation.Through the additive A D1 of change can be used to detect cover with additive A D1 and/or be added or revise after dipping second through the existence of part DOT2 of change.In one embodiment, second the first real mark MRK1 can be indicated to be modified in later phases through the existence of part DOT2 of change.Second can to indicate through the existence of part DOT2 of change and forges mark.
The part DOT1 through change through covering of the first mark MRK1 can be realized as and make to be difficult to maybe can not to produce second through the part DOT2 of change, and this second has the identical spectral quality of the part DOT1 through changing with first through covering through the part DOT2 of change.Such as, each several part of DOT1 and DOT2 can have different colours.Such as, each several part of DOT1 with DOT2 can with sending different fluorescence spectrums during identical UV-irradiation.
Peripheral region REF1 is optically different from through change part DOT1, DOT2.In other words, the part through change through covering is optically detectable.Optically can detect by the part DOT1 through changing, the optical property of DOT2 and the optical property of reference section REF1 are made comparisons through the part DOT1 of change, the existence of DOT2.Reference section REF1 can around the part DOT1 through changing and/or DOT2.Reference section REF1 can around the first mark MRK1 and/or second mark MRK2.The dimension of part DOT1 on SX or XY of direction through changing can be less than through the distance between the part DOT1 and reference section REF1 of change.Particularly, zero can be substantially equal to through the distance between the part DOT1 and reference section REF1 of change.Reference section REF1 can mean not comprising any part through change and not comprising the complete area of any printing of web WEB1.Mark MRK1, MRK2, TXT1 can cover at least 50% of total (one-sided) surface area of such as web WEB1.The surface area of reference section REF1 such as can be greater than 50% of total (one-sided) surface area of web WEB1.In one embodiment, mark MRK1, MRK2, TXT1 and can cover at least 20% of total (one-sided) surface area of such as web WEB1.The surface area of reference section REF1 such as can be greater than 80% of total (one-sided) surface area of web WEB1 respectively.
The part of the web WEB1 through covering can be classified into the part DOT2 of the part DOT1 or second through changing through covering through change based on optical property.Particularly, a part can be classified into the part DOT2 of the part DOT1 or second through changing through covering through change based on optical property.Second can be different from the color of the part DOT1 through changing through covering and/or fluorescence spectrum through the color of part DOT2 of change and/or fluorescence spectrum.Produced by the second laser beam LB2 second can be different from the color of the part DOT1 through changing through covering produced by the first laser beam LB1 and/or fluorescence spectrum through the color of part DOT2 of change and/or fluorescence spectrum.Even if the first laser beam LB1 and the second laser beam LB2 has same intensity wherein, pulse lasts and wavelength X
0situation in, produced by the second laser beam LB2 second can be different from the color of the part DOT1 through changing through covering produced by the first laser beam LB1 and/or fluorescence spectrum through the color of part DOT2 of change and/or fluorescence spectrum.Second can reflect, transmit and/or scattered light by the mode of the part DOT1 through change be different from through covering through the part DOT2 of change.
First mark MRK1 can be security sign, wherein on web WEB1, produces the second mark MRK2 thus the optical property and first of the second mark MRK2 marks MRK1 substantially identical may be difficult or impossible in later phases.First mark MRK1, second marks MRK2 and/or detects through the part DOT1 of change, the optical property of DOT2 by supervision as the mixed mark HMRK1 be combined to form of mark MRK1, MRK2.(example of mixed mark is as shown in Fig. 1 b and 23d).This supervision can comprise by from through change part DOT1, DOT2 send and/or from its reflection light spectrum with send from reference section REF1 and/or make comparisons from the spectrum of its light reflected.This supervision can comprise by send from Part I DOT1 and/or from its reflection light spectrum with send from Part II DOT2 and/or make comparisons from the spectrum of its light reflected.This supervision can comprise makes comparisons the reference spectra sent from part DOT1, DOT2 and/or store from the spectrum and database of the light of its reflection.Database can such as visit via internet.Main web WEB0 can comprise cellulose fibre.Particularly, main web WEB0 can be paper web or board web, and it comprises cellulose fibre.Cellulose fibre can easily absorb various additive.Cellulose fibre can be formed black, grey by heating laser bundle or brownly to be burnt (carbonization).The material of cellulose fibre can easily by laser beam ablation.
Main web WEB0 can be uncoated before being restructured by laser beam LB1.Such as, uncoated paper web or board web can be used as main web WEB0.Main web WEB0 also can be coated, and namely it can apply by one or more coating before being restructured by laser beam LB1.Main web WEB0 also can be called as such as substrate layer.
The cellulose fibre of main web WEB0 can be natural fiber cellulose fiber.Main web WEB0 can comprise natural fiber cellulose fiber.The cellulose fibre of main web WEB0 can be natural plants fiber.Natural plants fiber can such as be selected from the group be made up of xylon, cotton fiber, linen fibre, burlap fiber (that is, linen fibre), hemp, sisal fiber, tossa, kenaf, bamboo fibre and cocoanut fiber.Particularly, cellulose fibre can such as be selected from the group be made up of xylon, cotton fiber and linen fibre.These fibers are utilized when manufacturing paper and/or cardboard traditionally.Xylon can be such as pine tree fiber, cloud shirt fiber and/or eucalyptus fibers.Web WEB1 through covering can comprise cellulose fibre.Web WEB1 through covering can comprise paper and/or cardboard.
Each part DOT1, DOT2 through change can have such as circular or linearity configuration substantially, or it can have the shape of such as letter or number.
First mark MRK1 can comprise through cover through change part DOT1 but not second through change part DOT2.Second mark MRK2 can comprise the second part DOT2 through changing but not the part DOT1 through change through covering.One or more part DOT1, DOT2 through change can form alphanumeric symbol (that is, letter and/or numeral), and it can be highly such as in the scope of 1mm to 20mm.
Mark MRK1 and/or MRK2 can indicate such as trade name, name, date mark or page number.
Web WEB1 can optionally comprise text and/or pattern I NF1, and it has been printed on the web WEB1 through covering or on main web WEB0.(text can be such as, mark " TXT1 ").Figure and/or text can be printed by using conventional printing equipment (such as, flexographic printing, hectographic printing, ink jet printing).
Article ITE1 can be formed from the web WEB1 through covering.The article ITE1 obtained by the web WEB1 of cutting a slice through covering can comprise one or more part DOT1 through change through covering.Article ITE1 can comprise one or more second through change part DOT2.Article ITE1 can be the such as scraps of paper or cardboard sheet.The size of this sheet can be such as A5, A4, A3, A2, A1, A0, ANSI A, ANSIB, ANSI C, ANSI D and ANSI E, as determined in standard ISO 216 and ANSI/ASME Y14.1.Article ITE1 can optionally comprise text and/or pattern I NF1.Article ITE1 can be such as receipt, label, warranty, written agreement or the packing of product.Article ITE1 optionally can make lining (line with) with adhesive.Article ITE1 can be such as label.Particularly, article ITE1 can be the label for medicament.
With reference to Fig. 2 a, the optical difference between the part DOT1 and reference section REF1 of change can such as be detected by the web WEB1 irradiated through covering.This illumination light can be such as visible ray VIS0 and/or ultraviolet light UV0.At web WEB1 visible ray VIS0 and/or when irradiating with ultraviolet light UV0, the optical property of part DOT1, DOT2 can be monitored by human eye E1.Part DOT1 and/or DOT2 can be detected by naked eyes E1 (namely by bore hole E1).Alternatively, when being watched by human eye E1, optical device can be used to the detection being convenient to part DOT1 and/or DOT2.Optical device can be such as at the microscope between the web WEB1 and eye E 1 of covering or optical narrow-band wave filter.Illumination light VIS0 and/or UV0 can obtain from light source 1210 and/or 1220.Light source 1210,1220 can be such as light emitting diode, gas-discharge lamp (specifically fluorescent tube) or halogen tungsten lamp.Identical light source can provide visible ray VIS0 and ultraviolet light UV0.
With reference to Fig. 2 b, at web WEB1 visible ray VIS0 and/or when irradiating with ultraviolet light UV0, the optical property of part DOT1, DOT2 monitors by using optical sensor CAM1.Optical sensor CAM1 can be such as imageing sensor.Such as, the digital camera of mobile phone can be used as imageing sensor.Optical sensor CAM1 can be spectral selection to measure such as reflectance spectrum and/or fluorescence spectrum.Optical sensor CAM1 can be arranged to detect visible ray, ultraviolet light and/or infrared light.
With reference to Fig. 3 a, the mechanical structure of main web WEB0 and/or chemical composition can be come local by laser beam LB1 and change to form first foundation part DOT0.Laser beam LB1 such as locally can change the color of main web EB0, inactive next autonomous web WEB0 fluorescence and/or change the light scatter properties of main web WEB0.Laser beam LB1 can be used to excise material from main web WEB0.
Main web WEB0 can comprise fluorescent material, such as talan, cumarin or pyrazoline.
The fluorescent material of main web WEB0 can comprise such as fluorescence transisomer, and wherein fluorescence transisomer is converted into non-fluorescence cis-isomer by fluorescent material being exposed to ultraviolet light.
Additive A D1 can comprise fluorescent material, such as talan, cumarin or pyrazoline.
The fluorescent material of additive A D1 can comprise fluorescence transisomer, and wherein fluorescence transisomer is by being exposed to ultraviolet light to be converted into non-fluorescence cis-isomer by fluorescent material.
Mark laser beam LB1 can obtain from laser instrument 500.Laser instrument 500 can be such as excimer laser, carbon dioxide laser or optical fiber laser.The peak wavelength λ of laser beam LB1
0can such as in ultraviolet range (such as, in 180 scopes to 380nm), in visible range (such as, in 400 scopes to 760nm) or in infra-red range (such as, in the scope of 800nm to 11 μm).Laser beam LB1 can have some (making a reservation for) laser parameter.Laser parameter can comprise such as wavelength X
0, intensity (when when the surface measurement of main web WEB0) and pulse last.
Foundation DOT0 is by using wavelength to be λ
0laser beam without cover main web WEB0 in formed.To have covered with additive A D1 and after/dipping at main web WEB0, laser emission and additive A D1 can have impact to the minimum strength grade needed for the optical property changing web alternately.Web WEB1 through covering can have minimum threshold strength I
mIN, 1, this minimum threshold strength I
mIN, 1main web WEB0 has been covered with additive A D1 and/or be λ by wavelength after flooding
0laser beam cause the optically detectable change of this main web WEB0 to be needs.Minimum threshold strength I
mIN, 1such as shown in Fig. 6 a, 6b, 9a, 11a and 12a.
The energy of laser beam is by the radiation that absorbs in main web and/or be converted into heat by the radiation in absorbing additives.
Additive A D1 can be selected such that it has high-absorbility to laser emission.Particularly, additive A D1 can be selected such that it ultraviolet state phase and/or infrared state mutually in there is high-absorbility.Additive A D1 can be selected such that it has high-absorbility in the scope of 180nm to 380nm and/or in the scope of 800nm to 11 μm.Additive A D1 can comprise such as titanium dioxide and/or organic dyestuff.
With reference to Fig. 3 b, the part DOT1 through change through covering is by covering with additive A D1 and/or flooding main web WEB0 thus foundation DOT0 also covers with additive A D1 and/or floods and formed.The part DOT1 through change through covering comprises foundation DOT0 and is bonded to a certain amount of additive A D1 of foundation DOT0.The additive A D1 of described amount to be positioned on foundation DOT0 or impregnated in foundation (DOT0).The additive A D1 of described amount can be directly or indirectly and be bonded to foundation DOT0.In other words, additive A D1 directly can contact with foundation DOT0, or the part DOT1 through change through covering can comprise the one or more inter coats between foundation DOT0 and the additive A D1 of described amount.
The additive A D1 of the part DOT1 through change through covering not yet is exposed to laser beam LB1.Therefore, the visible part of the additive A D1 of the part DOT1 through change through covering may have substantially the same optical property with the visible part of the additive A D1 of reference section REF1.
Additive A D1 can be put on the whole upper surface of main web WEB0 and/or lower surface substantially.Additive A D1 can be such as applied in by injection, curtain coating, dip-coating or brushing.
Additive A D1 can comprise such as fluorescent whitening agent.If main web WEB0 comprises the first fluorescent whitening agent, then additive A D1 can comprise the second different fluorescent whitening agents.This brightening agent can be such as talan, cumarin or pyrazoline.
The thickness d of foundation DOT0
0the thickness d of main web WEB0 can be less than
w0.In other words, foundation DOT0 can be impregnated thus it does not extend through main web WEB0.The bottom side of foundation DOT0 can be covered by material layer, and this material layer is not yet modified because being exposed to laser beam.Such as can not changing layer and/or being protected by the layer of additive A D1 on this bottom side by main web through the bottom side of change part through covering.
If foundation DOT0 extends completely through main web WEB0 (namely work as d
0=d
w0time), to cover with additive A D1 and/or the both sides of flooding main web WEB0 may be favourable.Otherwise the foundation of vacation can produce by the dorsal part (bottom side) the second laser beam LB2 being guided to the web WEB1 through covering, and can not cause the change of additive.Both sides can cover with identical additive A D1 or with different additive A D1, AD2.The composition of Second addition AD2 also can be selected such that Second addition AD2 is modified when being exposed to the second laser beam LB2.
Fig. 4 shows the part DOT1 through change through covering with different optical character.
Such as, main web WEB0 can comprise fluorescent material.The fluorescence carrying out autonomous web WEB0 comes suppressed by fluorescent material being exposed to intense laser beam LB1.The part exposed can cover with the additive A D1 launching UV subsequently and/or flood to form the part DOT1 through change through covering.In this case, when the web WEB1 ultraviolet light UV0 through covering irradiate and in visible range at wavelength, (such as, by bore hole E1) observes time, the part DOT1 through change through covering may look than darker with reference to REF1.
The color of main web WEB0 locally is changed by main web WEB0 being exposed to intense laser beam LB1.Particularly, foundation DOT0 can be carbonized thus it has black, grey or brown.The foundation formed by intense laser beam can cover with additive A D1 subsequently and/or flood to form the part DOT1 through change through covering.In this case, when the web WEB1 visible ray VIS0 through covering irradiate and in visible range at wavelength, (such as, by bore hole E1) observes time, the part DOT1 through change through covering may look darker than reference section REF1.
Intense laser beam LB1 can be arranged to excise material from main web WEB0 and/or be oxidized the material of main web WEB0 thus form hole.The foundation DOT0 formed by laser beam can comprise hole.Main web WEB0 can cover with additive A D1 subsequently thus this additive fills this hole.Through cover through change part can be the hole of filling with additive A D1.The part DOT1 through change through covering can reflect and/or scattered illumination by the mode different from reference section REF1.
But the part DOT1 through change through covering can be that optics is detectable based on its scattered light character.The gloss number of the part DOT1 through change through covering can be different from the gloss number of reference section REF1 substantially.Gloss number is such as measured by the method for definition in standard " TAPPI T480 ".Part DOT1 can have glossiness visual appearance, and reference section REF1 can have lacklustre visual appearance.Part DOT1 can have lacklustre visual appearance, and reference section REF1 can have glossiness visual appearance.Different gloss numbers such as by covering with additive A D1 and/or the grainiess of main web WEB0 is changed before flooding main web WEB0 with the main web WEB0 of laser beam LB1 process, or thus forms minute bubbles to provide in main web WEB0.
Fig. 5 has explained orally and on web WEB1, produced mark (such as marking MRK2) further after covering with additive A D1 and/or flooding.This marks the part DOT2 comprised through change further.
Laser beam LB2 can be arranged to clash on the upper surface of the web WEB1 through covering, and the main web WEB0 useful additives AD1 be included in the web WEB1 through covering covers and/or to flood thus laser beam LB2 can not be mutual with the top layer of main web WEB0 when not mutual with additive A D1.The main web WEB0 useful additives AD1 be included in the web WEB1 through covering covers and/or to flood thus laser beam LB2 can not when through not mutual with the top layer of main web WEB0 when comprising the layer of this additive A D1.
First can comprise additive A D1 through the part DOT1 through change of covering, and it is not yet exposed to laser beam.Trial laser beam LB2 is formed and inevitably also this additive A D1 will be exposed to laser beam LB2 by second of additive A D1 through the part DOT2 of change.Therefore, the additive being exposed to laser beam LB2 will be comprised through change part DOT2.The composition of additive A D1 can be selected such that to attempt by laser beam LB2 formed cause being included in the additive A D1 in the top layer of part DOT2 through change part DOT2 optically can detect conversion.When being exposed to intense laser beam, additive A D1 such as can change color, or additive A D1 can lose its photoluminescent property.
Such as, the composition of additive A D1 can be selected such that the intensity of the second laser beam LB2 wherein equals to cause the minimum threshold strength I that optically can detect needed for change of the main web WEB0 be included in the web WEB1 through covering
mIN, 1situation in, additive A D1 is exposed to the second laser beam LB2 and decreases the fluorescent yield of additive A D1 in the web WEB1 be included in through covering partly.
" fluorescent yield " is defined as the ratio of the photon numbers of photon numbers and the absorption sent, and the photon wavelength wherein sent is longer than the photon wavelength of absorption.Fluorescent yield also can be called as fluorescence efficiency.Expression " fluorescence of stopping using " and " Fluorophotometry " mean to reduce fluorescent yield.When being exposed to intense laser beam, the scattered light character of additive A D1 can be changed.Such as, the glossy layer of additive A D1 can be locally varied in a controlled way to have matt appearance.The composition of additive A D1 can be selected such that the additive A D1 covering main web WEB0 has matt appearance at first, and wherein the part being exposed to laser beam LB2 of additive A D1 has glossy outward appearance.The composition of additive A D1 can be selected such that the additive A D1 covering main web WEB0 has glossy outward appearance at first, and wherein the part being exposed to laser beam LB2 of additive A D1 has matt appearance.The composition of additive A D1 can be selected such that to be exposed to the gloss number that laser beam LB2 changes the additive A D1 of the main web WEB0 of part DOT1 covered through change partly.The composition of additive A D1 is chosen advantageously to make second to be different from the corresponding optical property of the region DOT1 through change through covering through at least one optical property of the region DOT2 of change.It second is difficulty or impossible through the part DOT2 of change that the composition of additive A D1 can be selected such that by what send laser beam LB2 to produce the part DOT1 through change be optically similar to through covering to web WEB1.The composition of additive A D1 can be selected such that to produce when not removing previous additive A D1 be optically similar to through cover through change part DOT1 second through change part DOT2 be difficulty or impossible.The composition of additive A D1 can be selected such that to produce when not applying new additive layer AD1 to WEB1 be optically similar to through cover through change part DOT1 second through change part DOT2 be difficulty or impossible.
Fig. 6 a and 6b shows the strength range for Fluorophotometry by example.
Fig. 6 a relates to wherein main web WEB0 and comprises the first fluorescent material and additive A D1 comprises the situation of second fluorescent material with the fluorescence spectrum different from the first material.First foundation part DOT0 is by producing applying main web WEB0 to be exposed to laser beam LB1 before additive A D1 thus stopped using partially or completely from the fluorescence of foundation DOT0.When generation first marks MRK1, the intensity of laser beam LB1 can be maintained at value I
mIN, 0with I
mAX, 0between.I
mIN, 0can represent and be enough to stop using not yet by the minimum threshold strength of the fluorescence of the naked main web WEB0 of additive A D1 covering.I
mAX, 0the maxim threshold strength of the perceived color not yet changing main web WEB0 can be represented.Particularly, I
mAX, 0the maxim threshold strength of the carbonization not yet causing first foundation part DOT0 can be represented.Bar B0 represents that parameter area is from I
mIN, 0to I
mAX, 0.I
lB1the intensity of the first mark laser beam LB1 can be represented.
Second foundation DOT0 ' is formed by the web WEB1 guided to by the second laser beam LB2 through covering.The minimum threshold strength I of the fluorescence of additive A D1 can absorb and/or scattering laser thus be enough to is stopped using main web WEB0 through burying
mIN, 1can higher than the situation without the main web covered.I
mIN, 1can represent that (when being directed to main web by additive A D1) not yet causes the coking maxim threshold strength of the second foundation DOT0 ' when laser beam LB2 is directed to the web WEB1 through covering.From I
mIN, 1to I
mAX, 1scope marked by bar B1 in Fig. 6 a.Bar B1 represents that parameter area is from I
mIN, 1to I
mAX, 1.I
lB2the intensity of the second laser beam LB2 can be represented.
Bar B2 represents the applicable intensity of the fluorescence for inactive additive A D1.I
mIN, 2the minimum threshold strength of the fluorescence being enough to inactive additive A D1 can be represented.
The composition of additive A D1 can be selected such that for the minimum levels I of main web WEB0 by the fluorescence of additive A D1 that stop using
mIN, 1substantially higher than the minimum levels I causing stopping using from the fluorescence of additive A D1
mIN, 2.Therefore, the fluorescence that the main web WEB0 that stops using asynchronously is stopped using by the fluorescence of additive A D1 from additive A D1 may be impossible.Attempting change main web when changing additive A D1 when difference may be impossible by the character of additive A D1.Local in the fluorescence spectrum of additive A D1 changes and can be interpreted to having people to stop using after applying additive or the instruction of fluorescence of the main web WEB1 that attempts stopping using.
Therefore, second through the part DOT2 of change by monitoring that the photoluminescent property of top layer detects simply.When irradiating with ultraviolet light UV0, the part DOT1 through change through covering may seem that the part DOT2 than second through change is brighter.Compared with complete additive A D1, be bonded to second may to have minimizing fluorescent yield through changing the additive of part DOT2.
Laser beam LB1, LB2 can have identical wavelength X
0last with pulse.
Parameter shown in the vertical pivot of Fig. 6 a can also be that pulse lasts and non-intensity.Express " fluorescence of stopping using " to mean to reduce fluorescent yield.Express " Fluorophotometry " to mean to reduce fluorescent yield.
Fig. 6 b show wherein foundation by by the first intensity level I
lB2the first laser beam LB1 guide to naked (without covering) main web WEB0 produce and optically similar foundation by by same intensity level I
lB2the situation that produces of the second laser beam LB2.Equally in this case, intensity level I
lB2the fluorescence of stopping using from additive A D1 may be enough to.Identical wavelength X can be had through laser beam LB1, LB2 of the part DOT2 of change for generation of the part DOT1 and second through change through covering
0last with pulse.
Fig. 7 a and 7b shows the fluorescence sent from the web WEB1 through covering.First mark MRK1 first through cover through change part DOT1 by covering with additive A D1 after being exposed to the first laser beam LB1 and/or flooding main web WEB0 to be formed.Second of second mark MRK2 is formed by the web WEB1 through covering being exposed to the second laser beam LB2 after applying additive A D1 through the part DOT2 of change.
When the web WEB0 ultraviolet light UV0 through covering irradiates, part DOT, DOT2, REF1 can send fluorescence F1, F2.First can send light F1 through the part DOT1 of change, and second can send light F2 through the part DOT2 of change, and reference section REF1 can send fluorescence F0.
With reference to Fig. 7 b, the main web of reference section REF1 can send light F0a, and the additive layer being bonded to this reference section REF1 can send light F0b.Component F0a and F0b can together with form light F0.The foundation of part DOT1 through change through covering can send light F1a, and the additive A D1 being bonded to this part DOT1 through change through covering can send light F1b.Second can send light F2a through the foundation DOT0 ' of part DOT2 of change, and the additive being bonded to this part DOT2 through change through covering can send light F2b.Second may have the fluorescent yield of minimizing, because it has been exposed to intense laser beam LB2 through the additive of part DOT2 of change.
Main web WEB0 can comprise the first fluorescent material, and additive A D1 can comprise the second fluorescent material thus (at first) fluorescence spectrum of additive A D1 is different from the fluorescence spectrum of main web WEB0 substantially.When reference section REF1 is irradiated by ultraviolet light UV0, main web WEB0 can send (i.e. fluorescence) light with the first visible spectrum F0a, and additive A D1 can send (i.e. fluorescence) light with the second visible spectrum F0b.Observer E1 and/or fluorescence detector CAM1 (Fig. 1) can detect now reference section REF1 and send light, and its spectrum F0 is the combination of spectrum F0a and F0b.
Web WEB1 can be irradiated by ultraviolet light UV0 thus the radiation of visible ray VIS0 is less than 10% of the radiation of ultraviolet light UV0, is advantageously less than 1%, to strengthen the contrast caused by the spatial diversity in photoluminescent property.Web WEB1 irradiates by using uniform space radiation substantially.
The part DOT1 that the eye E 1 of observer and/or fluorescence detector CAM1 (Fig. 1) can detect now through covering sends light, and its spectrum F1 is the combination of spectrum F1a and F1b.
The part DOT1 through change through covering can comprise foundation DOT0 and top layer, and the fluorescence of foundation DOT0 is stopped using by laser beam LB1, and top layer comprises fluorescence additive AD1.First mark MRK1 can be detected now because be substantially different from the spectrum F0 of the light sent from reference section REF1 from the spectrum F1 of light sent through the part DOT1 of change through covering.Because be deactivated from the fluorescence of foundation DOT0, so composition F1a can be very little or ignore to the contribution through combination spectrum F1.
Additive A D1 is applied in after the fluorescence of floor portions DOT0 is deactivated.The spectrum F1b of the light sent by the top layer of the part DOT1 through covering can be substantially identical with the spectrum of the light that the top layer by reference section REF1 sends.Two top layers can comprise and enliven fluorescent material and can have substantially the same photoluminescent property.
The composition of additive A D1 can be selected such that for the minimum levels I of main web WEB0 by the fluorescence of additive A D1 that stop using
mIN, 1substantially higher than the minimum levels I causing stopping using from the fluorescence of additive A D1
mIN, 2.Therefore, produce after applying additive A D1 second can send through the part DOT2 of change the light that its spectrum F2 is different from the spectrum F1 of the light sent from the part DOT1 through covering.Therefore, second (such as false) mark MRK2 can mark MRK1 phase with first (such as real) and distinguish.
Fig. 8 a shows the fluorescence spectrum F0a of the main web WEB0 of fluorescence, and the fluorescence spectrum F0b of fluorescence additive AD1.Spectrum F0 from the fluorescence of reference section REF1 can be formed the combination of spectrum F0a and spectrum F0b.When being irradiated by ultraviolet light UV0, reference section REF1 can send the light had through combination spectrum F0.Spectrum F0a can be different from spectrum F0b, or spectrum F0a can be similar to spectrum F0b.
Fig. 8 b shows foundation DOT0 being exposed to the fluorescence spectrum after laser beam LB1.The fluorescent yield of foundation DOT0 such as can be less than 50% of the initial fluorescent yield of main web WEB0.The part DOT1 through change through covering comprises foundation DOT0 and is bonded to the additive A D1 of this foundation.When the web WEB1 through covering is irradiated by ultraviolet light UV0, the spectrum F1 of the fluorescence of the part DOT1 through change covered that hangs oneself can be formed the combination of spectrum F1a and spectrum F1b.F1b represents the spectrum of the light sent from the additive A D1 of the part DOT1 through change through covering.The fluorescent yield of the additive A D1 of the part DOT1 through change through covering can be substantially equal to the fluorescent yield of the additive A D1 of reference section REF1.Spectrum F1b can be substantially identical with the fluorescence spectrum F0b shown in Fig. 8 a.
When the irradiation light UV0 of Fig. 8 b has the intensity identical with the illumination light UV0 in Fig. 8 a and spectral component, the fluorescence carrying out autonomous web WEB0 can be stopped using by laser beam LB1 partially or completely, thus spectrum F1a is different from the fluorescence spectrum F0a shown in Fig. 8 a substantially.
Particularly, when the web WEB1 through covering is irradiated by ultraviolet light UV0, the part DOT1 through change through covering may seem darker than reference section REF1.
The part DOT1 through change through covering can be covert indicia MRK1, and it only becomes visible when being irradiated by ultraviolet light UV0.
The fluorescence spectrum F1 of the part DOT1 through change through covering can correspond to (visible) color different from the fluorescence spectrum F0 of reference section REF1.Therefore, when the web WEB1 through covering is irradiated by ultraviolet light UV0, the first mark MRK1 can be detected by bore hole E1.
Alternatively, the fluorescence spectrum F1 of part DOT1 through change through covering can be only slightly different with the fluorescence spectrum F0 of reference section REF1, even if thus be also difficult or impossible when the web WEB1 through covering is irradiated by ultraviolet light UV0 by making with the naked eye E1 detect through covering through the part DOT1 of change.Such as, be less than the power of fluorescence spectrum F0 and F1 10% or be even less than 1% can in visible wavelength region (such as, in 400 to 760nm scopes).In this case, the imageing sensor of the part DOT1 through change through covering such as by can catch image at two different (ultraviolet) wavelength places detects.
Fig. 8 c shows second through changing the fluorescence spectrum F2 of part DOT2.Be exposed to intense laser beam LB2 may to stop using autonomous web and also have fluorescence from additive.Therefore, the fluorescence from the second mark MRK2 can partially or completely be suppressed, and wherein the top layer of the first mark MRK1 can be fluorescence.When the web WEB1 through covering is irradiated by ultraviolet light UV0, the vision difference between the part DOT2 of the part DOT1 and second through change through covering through changing such as can by using bore hole E1 to detect.
Alternatively, the optical difference between the part DOT2 of the part DOT1 and second through change through covering through changing may be sightless to bore hole E1.This vision difference such as can use the imageing sensor can catching image at two different (ultraviolet) wavelength places to detect.
Fig. 9 a to 10c relates to and is wherein exposed to the situation that intense laser beam can change the color of main web WEB0 and the color of additive A D1.
Can comprise the material being arranged to change color when being exposed to mark laser beam LB1 with reference to Fig. 9 a, main web WEB0, and additive A D1 can comprise the material being arranged to change color when being exposed to laser beam LB2.First foundation part DOT0 by being exposed to laser beam LB1 by main web WEB0 thus the color of foundation DOT0 is modified and produces before applying additive A D1.When generation first marks MRK1, the intensity of laser beam LB1 can be maintained at value I
mIN, 0above.Bar B0 represents the strength range for generation of first foundation part DOT0.
Second foundation DOT0' is formed by the web WEB1 guided to by the second laser beam LB2 through covering.Additive A D1 can absorb and/or scattering laser, thus the minimum threshold strength I needed for color of the main web WEB0 of change through burying
mIN, 1can higher than the situation without the main web WEB0 of covering.Bar B1 can represent the strength range for generation of the second foundation DOT0'.I
lB2the intensity of the second laser beam LB2 can be represented.
Bar B2 represents the applicable intensity of the color for changing additive A D1.I
mIN, 2the minimum threshold strength being enough to the color changing additive A D1 can be represented.
The composition of additive A D1 can be selected such that for changing the minimum levels I of main web WEB0 by the color of additive A D1
mIN, 1substantially higher than the minimum levels I causing the color changing additive A D1
mIN, 2.Therefore, changing main web WEB0 by laser beam LB2, asynchronously to change the color of additive A D1 by the color of additive A D1 may be impossible.
Therefore, second through the part DOT2 of change by monitoring that the color of top layer detects simply.When by the visible ray VIS0 not comprising ultraviolet light UV0 to irradiate time, the part through change of the first mark MRK1 may seem to have to mark from second MRK2 through changing the different color of part.
Laser beam LB1, LB2 can in identical predetermined wavelength ranges.Laser beam LB1, LB2 can have identical wavelength X
0.Particularly, laser beam LB1, LB2 can have identical wavelength X
0last with pulse.Parameter shown in the vertical pivot of Fig. 9 a can also be that pulse lasts and non-intensity.
With reference to Fig. 9 b, the main web WEB0 of reference section REF1 can have color C0a, and the additive layer of reference section REF1 can have color C0b.When the web WEB1 through covering is irradiated by visible ray VIS0, the color C0 of reference section REF1 can be formed the combination of color C0a and C0b.The foundation DOT0 of the part DOT1 through change through covering can have color C1a, and can have color C1b through the additive A D1 of the part DOT1 through change of covering.The color of the part DOT1 through change through covering can be formed the combination of color C1a and C1b.Second can have color C2a through the foundation DOT0 ' of the part DOT2 through change of covering, and second can have color C2b through the additive A D1 of the part DOT2 through change of covering.Second can have dead color, because it has been exposed to intense laser beam LB2 through the additive of part DOT2 of change.Second color of part DOT2 through change through covering can be formed the combination of color C2a and C2b.
Figure 10 a shows the spectrum C0 when web WEB1 is irradiated by visible ray VIS0 from the light of reference section REF1 reflection.C0a represents that spectrum from the light of main web WEB0 reflection and C0b represent the spectrum of the light from additive A D1 reflection.Spectrum C0 can be the combination of spectrum C0a and spectrum C0b.Spectrum C0 can correspond to basic neutral color.Particularly, when being watched by eye E 1, spectrum C0 can cause the sensation of white or grey.
Same symbol (such as, C0, C1 or C2) is used to reflected light herein, for spectrum and for respective color.
Figure 10 b shows the spectrum C1 when being irradiated by visible ray VIS0 from the light of the reflection of the part DOT1 through change through covering.Foundation DOT0 can have such as dark-coloured.From foundation DOT0 reflection light spectrum C1a can correspond to such as black or correspond to brown.The spectrum C1b of the light reflected from additive A D1 (top layer) can correspond to such as white, corresponding to grey or correspond to " Transparent color ".Spectrum C1 can be the combination of spectrum C0a and spectrum C0b.The part DOT1 through change through covering can have the reflectivity lower than reference section REF1, and can seem darker than the visual color C0 of reference section REF1 through the visual color C1 of the part DOT1 through change of covering.Therefore, when web WEB1 is irradiated by visible ray VIS0, the existence of the part DOT1 through change through covering can be detected by bore hole E1.
Figure 10 c shows the spectrum C2 when being irradiated by visible ray VIS0 from the second light reflected through the part DOT2 of change.In this case, when through cover web WEB1 by visible ray VIS irradiate time, the color of additive A D1 is changed, thus second through change part DOT2 seem than through cover through change part DOT1 darker.
Difference between spectrum C1 and spectrum C0 can also be little of being difficult to or can not being detected by bore hole E1.Difference between spectrum C1 and spectrum C0 such as can be detected by Color-sensitive imageing sensor CAM1.Difference between spectrum C2 and spectrum C2 can also be little of being difficult to or can not being detected by bore hole E1.Difference between spectrum C2 and spectrum C1 such as can be detected by Color-sensitive imageing sensor CAM1.
Figure 11 a and 11b relates to and is wherein exposed to intense laser beam and can changes the color of main web WEB0 and the situation of fluorescence of the additive A D1 that stops using.
Can comprise the material being arranged to change color when being exposed to the first laser beam LB1 with reference to Figure 11 a, main web WEB0, and additive A D1 can be included in the fluorescent material of stopping using when being exposed to the second laser beam LB2.First foundation part DOT0 by being exposed to laser beam LB1 by main web WEB0 thus the color of foundation DOT0 is modified and produces before applying additive A D1.Generation first through cover part DOT1 time, the intensity of laser beam LB1 can be maintained at value I
mIN, 0above.Bar B0 represents the strength range for generation of first foundation part DOT0.
Second foundation DOT0' is formed by the web WEB1 guided to by the second laser beam LB2 through covering.The minimum threshold strength I of color that additive A D1 can absorb and/or scattering laser thus be enough to is changed through burying main web WEB0
mIN, 1can higher than the situation without the main web WEB0 of covering.Bar B1 can represent the strength range for generation of the second foundation DOT0 '.I
lB2the intensity of the second laser beam LB1 can be represented.
Bar B2 represents for stopping using from the applicable intensity of the fluorescence of additive A D1.I
mIN, 2the minimum threshold strength being enough to stop using from the fluorescence of additive A D1 can be represented.
The composition of additive A D1 can be selected such that for changing the minimum levels I of main web WEB0 by the color of additive A D1
mIN, 1substantially higher than the minimum levels I causing stopping using from the fluorescence of additive A D1
mIN, 2.Therefore, it may be impossible for changing main web WEB0 fluorescence of asynchronously being stopped using by the color of additive A D1.
Therefore, second detect by the photoluminescent property of supervision top layer through change part DOT2.The first part DOT1 through change through covering marking MRK1 may look like fluorescence, and the fluorescence that may represent minimizing through change part of the second mark MRK2.
Laser beam LB1, LB2 can have identical wavelength X
0last with pulse.Parameter shown in the vertical pivot of Figure 11 a can also be that pulse lasts and non-intensity.
With reference to Figure 11 b, the main web of reference section REF1 can have color C0a, and the additive layer of reference section REF1 can have color C0b.When the web WEB1 through covering is irradiated by visible ray VIS0, the color C0 of reference section REF1 can be formed the combination of color C0a and C0b.When being irradiated by ultraviolet light UV0, the main web of reference section REF1 can send light F0a, and the additive layer of reference section REF1 can send light F0b.Component F0a and F0b can together with send light F0.The foundation DOT0 of the part DOT1 through change through covering can have color C1a.The additive of the part DOT1 through change through covering can send light F1b.Second can have color C2a through the foundation DOT0 ' of the part DOT2 of change.Second can send light F2b through changing the additive of part DOT2.Second fluorescent yield may through changing the additive of part DOT2 with minimizing, because it is exposed to intense laser beam.
The laser beam LB2 being guided through additive A D1 can stop using the fluorescence of additive A D1.Therefore, the fluorescence of stopping using can be read as attempting the instruction of the main web WEB0 of change by the color of additive A D1.Therefore, when irradiating with UV light UV0, second may seem darker than the part DOT1 through change through covering through the part DOT2 of change.
When being irradiated by visible ray VIS0, the part DOT1 through change through covering can have color C1, and this color C1 seems darker than the color C0 of reference section REF1.
In this case, main web WEB0 can be fluorescence at first, but it does not need so.If main web WEB0 is fluorescence at first, is then exposed to laser beam LB1 and can stops using fluorescence.In this case, when being irradiated by UV light UV0, the part DOT1 through change through covering can seem darker than reference section REF1.If main web WEB0 is non-fluorescence at first, when being irradiated by UV light UV0, the part DOT1 through change then through covering can seem with reference section REF1 equally bright (or equally dark) because two parts can comprise substantially similar fluorescence top layer.
The existence of the part DOT1 through change through covering can be detected based on photoluminescent property based on color.Second can distinguish with the part DOT1 through changing through covering based on the difference in photoluminescent property through the part DOT2 of change.Web WEB1 through covering can be irradiated by ultraviolet light UV0 by visible ray VIS0.Web WEB1 available light VIS0 and UV0 irradiates simultaneously.In a substitute mode, WEB1 available light VIS0 and UV0 irradiates thus during first time period, web WEB1 irradiates with the light UV0 not comprising visible wavelength and during the second time period, the WEB1 light VIS0 not comprising ultraviolet wavelength irradiates.
Figure 12 a and 12b relates to wherein main web WEB0 and comprises fluorescent material and the composition of additive A D1 has been selected such that the color of additive A D1 reformed situation when being exposed to intense laser beam.
With reference to Figure 12 a, main web WEB0 can lose its photoluminescent property when being exposed to the first laser beam LB1, and additive A D1 can be arranged to change color when being exposed to the second laser beam LB2.Particularly, the composition of additive A D1 can be selected such that it has high-absorbility to UV and/or IR radiation.UV means ultraviolet and IR means infrared.
First foundation part DOT0 by being exposed to laser beam LB1 by main web WEB0 thus fluorescence is deactivated and produces before applying additive A D1.When producing the part DOT1 through change through covering, the intensity of laser beam LB1 can be maintained at value I
mIN, 0above.Bar B0 represents the strength range for generation of first foundation part DOT0.Second foundation DOT0' is formed by the web WEB1 guided to by the second laser beam LB2 through covering.The minimum threshold strength I of fluorescence that additive A D1 can absorb and/or scattering laser thus be enough to is stopped using through burying main web WEB0
mIN, 1can higher than the situation without the main web of covering.Bar B1 can represent the strength range for generation of the second foundation DOT0'.I
lB2the intensity of the second laser beam LB2 can be represented.
Bar B2 represents the applicable intensity of the color for changing additive A D1.I
mIN, 2the minimum threshold strength being enough to the color changing additive A D1 can be represented.The composition of additive A D1 can be selected such that for the minimum levels I of main web WEB0 by the fluorescence of additive A D1 that stop using
mIN, 1substantially higher than the minimum levels I of the color of change additive A D1
mIN, 2.Therefore, the main web WEB0 that stops using asynchronously changes additive A D1 color by the fluorescence of additive A D1 may be impossible.
Therefore, second through the part DOT2 of change by monitoring that the color of top layer detects.The part through change through covering of the first mark MRK1 may seem to have the color brighter through the part of change than the second mark MRK2.
Laser beam LB1, LB2 can have identical wavelength X
0last with pulse.Parameter shown in the vertical pivot of Figure 12 a can also be that pulse lasts and non-intensity.
With reference to Figure 12 b, the main web WEB0 of reference section REF1 can have color C0a, and the additive layer AD1 of reference section REF1 can have color C0b.When the web WEB1 through covering is irradiated by visible ray VIS0, the color C0 of reference section REF1 can be formed the combination of color C0a and C0b.When being irradiated by ultraviolet light UV0, the main web WEB0 of reference section REF1 can send light F0a, and the additive layer of reference section REF1 can send light F0b.Component F0a and F0b can together with send light F0.The foundation DOT0 of the part DOT1 through change through covering can send fluorescence F1a.The additive A D1 of the part DOT1 through change through covering can have color C1b.Second can send fluorescence F2a through the foundation DOT0' of the part DOT2 of change.Second can have color C2b through the additive of part DOT2 of change.Second can have dead color, because it has been exposed to light laser LB2 through the additive of part DOT2 of change.
The composition of additive A D1 can be selected such that to attempt inactive main web WEB0 have changed additive A D1 color by the fluorescence of additive A D1.Therefore, attempt inactive main web WEB0 to be disclosed by the color changing additive A D1 by the fluorescence of additive A D1.
Additive A D1 can be fluorescence but it does not need so.
The hole of excising and/or burning in main web WEB0 can be arranged to reference to Figure 13 a, laser beam LB1.
With reference to Figure 13 b, after basis of formation part DOT0, main web WEB0 useful additives AD1 covers and/or floods.Additive A D1 such as can be delivered by nozzle 620.The bonding of additive A D1 and main web WEB0 such as can optionally by using heater 630 and/or pressure roller 641,642 to improve.Main web WEB0 can by speed v
1move in the SX of direction.
In the situation in hole, additive can advantageously fill this hole, and this is formed by using laser beam LB1.Resultant WEB1 has been shown in Figure 13 c.
Composition with reference to Figure 14 a, additive A D1 can be selected such that to attempt being formed in main web WEB0 by laser beam LB2 also to form hole in the additive layer AD1 of web WEB1 by the another hole of additive A D1.Should (vacation) second can be hollow hole through the part DOT2 of change, and (really) part DOT1 useful additives AD1 through change through covering fill.Therefore, second can have the scattered light character different from the part DOT1 through changing through covering and/or different light transmitting property through the part DOT2 of change.Therefore, (vacation) part DOT2 through changing distinguishes by visual inspection and the part through changing through covering.
Particularly, the composition of additive A D1 can be selected such that it has high-absorbility in UV and/or IR region.Therefore, the energy of UV or IR laser beam can be absorbed thus be attempted being formed new bore under additive layer AD1 and also can be caused that additive layer AD1's optically can detect change in additive layer AD1.
It is further noted that laser beam LB1 can be arranged to produce very narrow hole in main web WEB0.This hole can be too narrow to and produce second hole with same diameter by machinery stickup by the pointer of the web WEB1 through covering may be difficulty or impossible.
With reference to Figure 14 b, second can be different from the color C1 of the part DOT1 through change through covering through the color C2 of the part DOT2 of change.The fluorescence spectrum F1 of the part DOT1 through change through covering can be different from through the fluorescence spectrum F2 of the part DOT2 of change.Light scatter properties through the part DOT2 of change can be different from the light scatter properties of the part DOT1 through change through covering.Light reflectance properties through the part DOT2 of change can be different from the light reflectance properties of the part DOT1 through change through covering.Light can be different from the light transmittance of light by the part DOT1 through change through covering by the light transmittance of the part DOT2 through change.
With reference to Figure 15, when web apparatus have living space the light of upper uniform strength distribution to irradiate time, the part through change can be distinguished with reference section based on spatial brightness change.Part through change can seem than background darker (or brighter).Web WEB1 can have such as have through change color first through change part DOT1a, and have through change fluorescence second through change part DOT1b.When being checked by bore hole E1, can seem than reference section REF1 darker (or brighter) through part DOT1a, the DOT1b of change.When being checked by imageing sensor CAM1, can seem than reference section REF1 darker (or brighter) through part DOT1a, the DOT1b of change.Depend on the spectral quality of illumination light, depend on through the part DOT1a of change, the spectral quality of DOT1b and the spectral quality depending on sensor CAM1 or eye E 1, can seem than reference section REF1 darker (or brighter) through part DOT1a, the DOT1b of change.
When checking web WEB1 by optical pickocff CAM1, predetermined wavelength range such as can in visible range (such as from 400nm to 760nm) or in ultraviolet range (such as, from 180nm to 380nm).The predetermined wavelength range of optical pickocff CAM1 can be defined by one or more optical filter.
Through the part DOT1 of change, DOT1a, DOT1b by measuring the radiation of part through change, and by the radiation value of part and the radiation value of reference section REF1 and/or make comparisons with storage reference value in memory through change is detected.
Through the part DOT1 of change, DOT1a, DOT1b by the brightness of part and the brightness of reference section REF1 through change and/or make comparisons with storage reference value is in memory detected.
The top curve C R1 of Figure 15 by example show when web WEB1 by the visible white light VIS0 not comprising ultraviolet light UV0 to irradiate time, at the brightness L at the diverse location place of this web WEB1
vIS, 1.Illumination light can have spatially uniform intensity distribution.
Brightness L is the luminous intensity from unit are reflection (or transmitting).This brightness indicate how many luminous powers by by from certain viewing angles viewing surface eye detection to.Brightness L considers the spectrum sensitivity of eyes.The unit of brightness can be cd/m
2(candela (candela) of per unit area)." visible white light " means the visible part of black body emission spectrum when in the scope of blackbody temperature at 3000K to 6500K.When illumination light does not comprise ultraviolet light, this means illumination light and does not comprise any spectral components that its wavelength is shorter than 400nm.
Curve C R1 also can be interpreted to the weighted average representing the spectral reflectance of web WEB1 that diverse location goes out, and wherein this spectral reflectance carrys out weighting by the spectrum sensitivity of eyes and by average in the visible wavelength region from 400nm to 760nm.Reference section REF1 can have brightness value L
rEF, 1.
Such as can be carbonized thus when irradiating with visible ray VIS0 and when being watched by eye E 1 through the part DOT1a of change, it looks like black.First can have brightness value L through the part DOT1a of change
1a, 1.
For the reliable detection by bore hole, the minimum-depth of the spatial modulation of brightness should be there is.The degree of depth of the spatial modulation of this brightness can be called as " visual contrast ".
The contrast relevant to by the inspection of bore hole can be called as " visual contrast ".When visual contrast file greater than or equal to 2% time, a part can be considered to " visible for bore hole ".When visual contrast file is less than 2%, a part can be considered to " substantially invisible for bore hole ".
(L is equaled relative to the visual contrast of reference section REF1, DOT1a part
rEF, 1-L
1a, 1)/L
rEF, 1.The visual contrast of DOT1a part such as easily can be detected by bore hole E1 to facilitate higher than 5%.
L
1b, 1represent the brightness of DOT1b part.Relative to reference section REF1, the visual contrast of hidden parts DOT1 equals (L
rEF, 1-L
1b, 1)/L
rEF, 1.
Visual contrast (the L of DOT1b part
rEF, 1-L
1b, 1)/L
rEF, 1such as can be less than 2%, thus when web WEB1 by do not comprised ultraviolet light UV0 visible white light VIS0 irradiate time by bore hole to check DOT1b part existence be difficulty or impossible.
Visual contrast (the L of DOT1b part
rEF, 1-L
1b, 1)/L
rEF, 1such as can be less than 0.5% thus when web WEB1 by do not comprised ultraviolet light UV0 visible white light VIS0 irradiate time by bore hole to check DOT1b part existence be almost impossible.
In the situation of low-down visual contrast, DOT1b part such as can be still by using imageing sensor CAM1 detectable.
Second curve C R2 by example show when web WEB1 by the ultraviolet light UV0 not comprising visible ray to irradiate time, at the brightness L at the diverse location place of this web WEB1
vIS, 2.Equally in this case, brightness L
vIS, 2how many luminous powers are indicated to detect by the eye E 1 from certain viewing angles viewing surface.
Main web WEB0 can be non-fluorescence at first, and wherein as the result being exposed to laser beam, the fluorescence from DOT1a and DOT1b part can be suppressed.Therefore, when being irradiated by ultraviolet light UV0 and being checked by bore hole E1, DOT1a, DOT1b can seem darker than reference section REF1.
L
rEF, 2represent the brightness of reference section REF1.L
1a, 1represent the brightness of DOT1b part.L
1b, 2represent the brightness of DOT1b part.In this case, the visual contrast of DOT1a part equals (L
rEF, 2-L
1a, 2)/L
rEF, 2.The visual contrast of DOT1b part equals (L
rEF, 2-L
1b, 2)/L
rEF, 2.When irradiating with ultraviolet light UV0, the visual contrast of DOT1b part can be greater than 2%, substantially even if the visual contrast of hidden parts DOT1 will be less than 2% when irradiating with visible ray VIS0.
Fluorescence from the bottom of web WEB1 can cause residual radiation L
rESI.Send from peripheral part and also can cause residual radiation L from the fluorescence of DOT1a, DOT1b partial dispersion
rESI.
3rd curve C R3 by example show when web WEB1 by the ultraviolet light UV0 not comprising visible ray to irradiate time, at the ultra-violet radiation R at the diverse location place of this web WEB1
uV.Ultra-violet radiation R
uVequal the integration of the spectral radiance in UV wavelength range.Radiation R
uVspatial variations can detect by the optical pickocff CAM1 of ultraviolet wavelength sensitivity.Radiation R
uVspatial variations can not be detected by bore hole E1.Curve C R3 also can represent the spatial variations of the ultraviolet reflectance of web WEB1.
R
1a, 3represent the ultra-violet radiation of DOT1a part.R
1b, 3represent the ultra-violet radiation of DOT1b part.R
rEF, 3represent the ultra-violet radiation of reference section REF1.In this case, the ultraviolet contrast of DOT1a part equals (R
rEF, 3-R
1a, 3)/R
rEF, 3.The ultraviolet contrast of DOT1b part equals (R
rEF, 3-R
1b, 3)/R
rEF, 3.Ultraviolet contrast can not by open hole detection.Web WEB1 can be monitored by the optical pickocff CAM1 detecting ultraviolet light.(through carbonization) part DOT1a can have low reflection for ultraviolet light thus when by UV sense optical sensor CAM1 to watch time, DOT1a part seems darker than reference section REF1.
Fluorescence from DOT1b part is suppressed by changing main web WEB0 with laser beam.Be exposed to laser beam and can change the chemical constitution of fluorescent material thus this material still Absorbable rod ultra-violet radiation, even if photoluminescent property may be deactivated.The ultra-violet radiation R of DOT1b part
1b, 3can lower than the ultra-violet radiation R of reference section REF1
rEF, 3.
Laser beam LB1 can decompose to come autonomous web WEB0 fluorescent material and/or from main web WEB0 excise fluorescence reference thus UV state mutually absorption locally reduced.In this case, when the optical pickocff CAM1 by UV sensitivity watches, can seem brighter than reference section REF1 through the part DOT1b of change.Therefore, the ultra-violet radiation L of Part II DOT1b
1b, 3can also higher than the ultra-violet radiation L of reference section REF1
rEF, 3.
In one embodiment, the first fluorescent material can be converted to the second material had in the different fluorescence spectrum of the first material by laser beam.
In one embodiment, the first fluorescent material can be converted to the second non-fluorescence material substantially by laser beam.
In one embodiment, visual contrast increases by selecting the wave-length coverage of illumination light VIS0 or maximizes.
In one embodiment, when being irradiated by white visible light, DOT1a part can be substantially invisible, but when by when having the radiation of visible light of narrow band, described hidden parts DOT1a can be visible.When by white light (such as, sunshine, halogen tungsten lamp) when irradiating, contrast such as can be less than 2%, wherein when by there is the light of narrow band (such as, by use visible laser or from light that is blue, red, green or yellow light-emitting diode) irradiate time, contrast can higher than 2%.
In one embodiment, DOT1b part can be realized as it is difficult to maybe can not by only monitoring visible ray to detect, wherein the existence of DOT1b part detects by using sensor CAM1, and this sensor CAM1 is arranged to detect from web WEB1 reflection and/or fluorescigenic ultraviolet light.
Fluorescent material can absorb the light energy of shorter wavelength, and sends a part of light energy of longer wavelength.In one embodiment, reference section REF1 can be fluorescence thus its absorbs visible ray send infrared light.In this case, the existence of DOT1b part detects infrared light activated optical pickocff CAM1 by using.
With reference to Figure 16, the production of paper web or board web can generally include the one or more steps in following steps:
-compression, wherein moist cellulose web is compressed with except anhydrating between the rolls,
-dry, wherein by heating, water is removed from web,
-calendering, wherein the surface of web is by compressing by smoothly between the rolls,
-gluing, wherein one or more sizing materials are added into web such as to improve the mechanical strength of this web,
-coating, wherein the one or more filler of this web applies such as to produce smooth surface to revise the optical reflection of web, and/or to facilitate the follow-up printing in this web.
Such as can implement in the one or more positions in position POS12, POS11, POS1, POS2, POS3, POS4 with laser beam as mark.
Foundation DOT0 such as can be formed (position POS11) between oven dry and calendering.The part DOT1 through change through covering can subsequently by covering with additive A D1 and/or flooding foundation DOT0 to be formed.
Foundation DOT0 such as can be formed (position POS1) between calendering and interpolation sizing material.The part DOT1 through change through covering can subsequently by covering with additive A D1 and/or flooding foundation DOT0 to be formed.
Foundation DOT0 such as can be formed (position POS2) between interpolation sizing material and interpolation filler.The part DOT1 through change through covering can subsequently by covering with additive A D1 and/or flooding foundation DOT0 to be formed.
Additive A D1 can be such as sizing material or filler.Sizing material can comprise such as starch, resin and/or glue.Filler can comprise such as calcium carbonate or china clay.Filler can be suspended in the adhesive of starch and the styrene-butadiene latexes boiled.
The composition of main web WEB0 can be selected such that the color of main web WEB0 and/or photoluminescent property are locally heated to greater than or equal to first threshold temperature T at main web WEB0
tHR1temperature time be modified.
The composition of additive A D1 can be selected such that the color of additive A D1 and/or photoluminescent property are locally heated to greater than or equal to Second Threshold temperature T at additive A D1
tHR2temperature time be modified.
The composition of main web WEB0 and/or the composition of additive A D1 can be selected such that first threshold temperature T
tHR1higher than Second Threshold temperature T
tHR2forge in case stop-pass crosses conduction heating.
With reference to Figure 17, a kind of device 1000 for the treatment of paper web or board web can comprise at least one indexing unit 500 and be arranged to supply at least one unit 600 of additive A D1.Unit 600 can be coating unit.Laser labelling unit 500 can be arranged to provide laser beam LB1, and this laser beam LB1 can be on main web WEB1 at laser spots SP1 and clash into.Coating unit 600 can be arranged to by covering with additive A D1 and/or flooding main web WEB0 to be formed the web WEB1 through covering.Particularly, coating unit 600 can be arranged to covering sizing material layer, cover main web WEB1 by pre-coat layer and/or by top coat layer.Device 1000 such as can optionally comprise such as moving web and/or the roller 1010,1020 for compressing web.This device can be paper machine.This device optionally can comprise the cutter unit being arranged to the web WEB1 through covering be cut into multi-disc.
With reference to Figure 18 a-18c, dissimilar mark can be produced on the different layers of paper web or board web WEB1.
Different laser instruments can be used.Such as, infrared laser (IR laser instrument) can be used to produce the visible marking comprised through change part, and this has black through change part when being irradiated by visible ray VIS0.Infrared laser can be used to the layer blackening making web WEB0 or WEB1.
Infrared laser (IR laser instrument) can be used to produce the visible marking comprised through change part, and this part through change can comprise hole in paper structure or etching.
Ultraviolet laser (UV laser instrument) can be used to cause being included in stopping using of the fluorescence chemical in main web or in additive.Ultraviolet laser can be used to produce covert marks, this covert marks can be substantially invisible for bore hole E1 when web WEB1 is irradiated by the visible ray VIS0 not comprising ultraviolet light UV0, and this be marked at can be visible for bore hole E1 when irradiating with ultraviolet light UV0.
Figure 18 a shows the web WEB1 formed by covering main web WEB0 with additive layer AD1.The one or both sides useful additives layer AD1 of main web WEB0 covers.Main web WEB0 can be fluorescence.Additive A D1 can be arranged to change color when being exposed to laser beam LB1 and/or change its fluorescence response.
Web WEB1 can comprise the part DOT1a through change through covering, DOT1b, DOT1c, and the naked part DOT2a through change, DOT2b, DOT2c, DOT2d, DOT2e.Through carbonization (black) part and superposition additive layer AD1 can (together with) formed through cover through change part DOT1a.Non-fluorescence foundation and superposition additive layer AD1 can form the part DOT1b through change through covering.The hole of filling with additive A D1 can form the part DOT1c through change through covering.
The color of additive layer AD1 can locally be changed to be formed the naked part DOT2a through change or DOT2d.The fluorescence of additive layer AD1 can be stopped using to form the naked part DOT2b through change or DOT2e by local.The hole extending through web WEB1 can form the naked part DOT2c through change.
The unbroken layer that the outmost surface that term " naked " can mean this part is not added agent AD1 covered.Term " naked " can mean only sending from the additive layer AD1 through change at least partially and/or reflecting of this part.
Figure 18 b shows by covering with the first additive A D1 and/or flooding main web WEB0, and covers the web WEB1 of the first additive A D1 formation with Second addition AD2 subsequently.The one or both sides of web WEB1 can be capped.The top side useful additives AD1 of web WEB1 covers, and the bottom side useful additives AD1 of this web WEB1 or AD2 covers equally.
Web WEB1 can comprise through cover through change part DOT1d, DOT1e, DOT1f, DOT1h, DOT1i, DOT1j and/or DOT1k.Web WEB1 can comprise the naked part DOT2f through change, DOT2h, DOT2i.
Fill with the first additive A D1 and the part DOT1d through change through covering can be formed with the hole that Second addition AD2 covers subsequently.
Hole can cover with the first additive A D1 and/or formed after flooding, and this hole can fill to form the part DOT1e through changing through covering with Second addition AD2 subsequently.
Hole can be filled with the first additive A D1.First additive A D1 can come local by laser beam LB1 to be changed.Part through change can cover to form the part DOT1f through change through covering with Second addition AD2.
Through (black) part of carbonization and superposition two additive layer AD1, AD2 can (together with) formed through cover through change DOT1h partly.
The color of the first additive A D1 can be come local by laser beam LB1 and change, and the part through change of the first additive A D1 can cover to form the part DOT1i through change through covering with Second addition AD2 subsequently.
The fluorescence of main web WEB0 can locally be stopped using, and is deactivated part and can covers to be formed the part DOT1j through change through covering with two additive layer AD1, AD2.
The fluorescence of the first additive A D1 can locally be stopped using, and is deactivated part and can covers to be formed the part DOT1k through change through covering with Second addition AD2.
The color of shallow-layer AD2 can locally be changed to be formed the naked part DOT2h through change.The fluorescence of shallow-layer AD2 can be stopped using to form the naked part DOT2h through change by local.
With reference to Figure 18 c, the web of Figure 18 b can cover with the 3rd additive layer AD3.The one or both sides of this web can cover with the 3rd additive A D3.Naked part DOT2f shown in Figure 18 b, DOT2h, DOT2i are capped by covering them with the 3rd additive A D3.
With reference to Figure 19, laser instrument indexing unit 500 can be arranged to be provided for one or more laser beam LB1 that main web WEB0 and/or the web WEB1 of local change through covering are changed in local.Laser labelling unit 500 can comprise the one or more beam deflection optics 100,200, this laser spots SP1 being such as arranged to laser beam LB1 be guided to laser spots SP1 and be arranged to mobile relative to main web WEB0 (or web WEB1).The intensity impinging upon the light on main web WEB0 can control to produce the part DOT0 (or DOT2) expected through change according to the position of tool point SP1.
Web WEB0 can with speed V
1longitudinal SX moves, and the first beam deflector 100 can be arranged on horizontal SY mobile laser spots SP1 to provide mark MRK1 and/or MRK2 with the both direction expecting size and shape.Laser spots SP1 can be moved into and make it during write mark MRK1 and/or MRK2 across vertical line YREF several times.Expect size, the part DOT0 through change of shape and position produces by the intensity that the controls light beam LB1 function as the position of tool point SP1.
Optics second beam deflector 200 can be arranged to periodically mobile laser spots SP1 on longitudinal SX.Use the V that gathers way that the second beam deflector 200 can allow with web WEB0
1produce mark MRK1 and/or MRK2.Speed V
1can such as in 5 scopes to 50m/s.
Optics second beam deflector 200 can be arranged to mobile laser spots SP1 on longitudinal SX.Use the second beam deflector 200 can allow in static (non-moving) web, produce mark MRK1 and/or MRK2.
Laser labelling unit 500 can comprise such as can by actuator 120 with angular velocity omega
1about the first rotatable mirror 100 that axle AX1 rotates.Laser labelling unit 500 can comprise such as can by actuator 220 with angular velocity omega
2around the second rotatable mirror 200 that axle AX2 rotates.Mirror 100 and/or 200 can comprise one or more reflection facet F1a, F1b.Mirror 100 and/or 200 can be rotary polygon mirror.
Laser module 400 can provide main beam LB0.First rotatable mirror 100 can provide intermediate beam LB0 ' by the light of reflected main beam LB0.Second rotatable mirror 200 can provide marker beam LB1 by the light reflecting intermediate beam LB0'.The light of marker beam LB1 is focused in main web WEB0 by (such as scioptics) focusing optics or is focused in the web WEB1 through covering.
Laser instrument indexing unit 500 position that can comprise based on laser spots SP1 controls the control unit CNT1 of the intensity of laser beam LB1.Control unit CNT1 can be arranged to provide control signal S to laser module 400 with to actuator 120,220
100, S
200, S
400.Signal S
100, S
200, S
400such as can send via cable CA1, CA2, CA3.
Laser instrument labelling apparatus 500 can be arranged to produce mark MRK1, MRK2 of comprising matrix pattern of dots.In other words, device 500 can be arranged to produce MRK1 and/or MRK2 comprising DOT0, DOT2 of being arranged to two bit arrays at multiple.After a DOT0 is formed by laser beam LB1, mark MRK1 is by covering with additive A D1 and/or flooding main web WEB0 to produce.
With reference to Figure 20, laser marking device 500 can comprise multiple separately controllable laser instrument 400a, 400b, 400c, 400d, 400e.Laser instrument labelling apparatus 500 can be arranged to produce mark MRK1, MRK2 of comprising matrix pattern of dots.The number N of separately controllable laser instrument such as can in the scope of 4 to 10.A higher number laser instrument can provide visually more joyful mark.More a low number laser instrument can be more cheap.
Each laser instrument 400a, 400b, 400c, 400d, 400e can provide mark laser beam LB1a, LB1b, LB1c, LB1d, LB1e.The intensity of each laser beam LB1a, LB1b, LB1c, LB1d, LB1e can be controlled separately to produce multiple different matrix pattern of dots.The intensity of each laser beam LB1a, LB1b, LB1c, LB1d, LB1e can be fixed in the time of main web WEB0 based on moving reference point and/or be controlled separately based on its position.The mark MRK1 produced by laser marking device 500 can be made up of such as 5x5 point or 7x5 point.Mark MRK1, MRK2 such as select by the Latin alphabet from A to Z and from the alphanumeric symbol the group that forms of Arabic numerals of 0 to 9.Device 500 can also produce dot matrix mark MRK2 on the web WEB1 through covering.
In one embodiment, laser marking device 500 can be arranged to speed V
1the main web WEB0 of movement of movement produces mark MRK1.In one embodiment, laser marking device 500 does not need to comprise any moving-member.In one embodiment, laser marking device 500 can be arranged to speed V
1the movement of movement produces mark MRK2 on the web WEB1 of covering.
Each laser beam is gathered in main web WEB0 by common focusing optics 350.Alternatively, each laser instrument can have himself concentration optics, and namely the first focusing optics can be used to focusing first light beam LB1a, and the second focusing optics can be used to focusing first light beam LB1b.
Device 500 can provide multiple laser spots SP1a simultaneously, SP1b, SP1c, SP1d, SP1e thus the intensity of each laser spots can be controlled separately.
Laser marking device 500 with reference to Figure 21, Figure 20 or Figure 22 also can comprise light beam separation unit, and it is arranged to provide multiple laser beam LB1a, LB1b, LB1c, LB1d, LB1e by the light of distribution main laser bundle LBC.The intensity of each light beam LB2a, LB2b, LB2c, LB2d, LB2e can by fast modulation, such as, be passed through to use high-speed modulator 420a, 420b, 420c, 420d, 420e.Main laser bundle LBC can be provided by single laser instrument 400.Main laser bundle LBC can be continuous wave light beam substantially.Alternatively, laser beam LBC can be pulse modulation with producing Partial synchronization through changing.Alternatively, laser beam LBC can be pulse modulation higher than the frequency of the maximum modulating frequency of modulator 420a, 420b, 420c, 420d, 420e substantially.
Equally in this case, the intensity of each laser beam LB1a, LB1b, LB1c, LB1d, LB1e can be controlled separately to produce desired point matrix pattern.Control unit CNT1 can be arranged the intensity controlling laser beam.
Wave beam separative element can comprise multiple beam splitter 415a, 415b, 415c, 415d.The power of beam splitter 415a, 415b, 415c, 415d splits ratio and can be selected such that each light beam LB1a, LB1b, LB1c, LB1d, LB1e can have equal maximum intensity.It can be such as 20%/80% that the power of the first beam splitter 415a splits ratio.It can be such as 25%/75% that the power of the second beam splitter 415b splits ratio.It can be such as 33%/67% that the power of the 3rd beam splitter 415b splits ratio.It can be such as 50%/50% that the power of the 4th beam splitter 415b splits ratio.Assembly 415e can be reflector, and it reflects into light beam LB1e by 100% of power.
Intensity modulator 420a, 420b, 420c, 420d, 420e can be such as acousto-optic modulator or MEMS modulator (that is, based on the modulator of MEMS).Each laser beam is aggregated main web WEB0 by common focusing optics 350.Alternatively, each light beam has himself concentration optics, and namely the first focusing optics can be used to focusing first light beam LB1a, and the second focusing optics can be used to focusing first light beam LB1b.
If the power of the main beam LBC not needing fast modulation to be provided by laser instrument 400, then the power of laser instrument 400 can significantly increase and/or the price of laser instrument 400 can significantly reduce.
With reference to Figure 22, when marking laser beam and being arranged to move up in the side identical with main web WEB0, the maximum modulating frequency f of mark laser beam LB1a, LB1b, LB1c, LB1d, LB1e
mODcan be reduced in fact.Each mark laser beam can provide mobile laser spots on main web WEB0.The longitudinal velocity of this laser spots can with the speed V of main web WEB0
1slightly different to allow write bidimensional mark MRK1 (or MRK2).
Laser spots can be arranged to such as move by using one or more rotary light beam to deflect facet F2a.Facet F2a provides marker beam LB1a, LB1b, LB1c, LB1d, LB1e by deflection intermediate beam LB0a, LB0b, LB0c, LB0d, LB0e.Particularly, beam deflection facet F2a can be the deflector surface of revolving mirror 200.Facet F2a can be rotated by actuator 220, and actuator 200 can be such as motor.All light beam LB1a, LB1b, LB1c, LB1d, LB1e can by identical facet F2a or by using some facets to move simultaneously.All light beam LB1a, LB1b, LB1c, LB1d, LB1e can be focused to form laser spots by common focusing optics 350.Device 500 can provide multiple laser spots SP1a simultaneously, SP1b, SP1c, SP1d, SP1e thus the intensity of each laser spots can be controlled separately.The intensity of each light beam LB1a, LB1b, LB1c, LB1d, LB1e can be controlled separately.Each laser instrument 400a, 400b, 400c, 400d, 400e can be controlled separately.Control signal for controlling the intensity of light beam can be provided by control unit CNT1.Signal for controlling the rotation of facet F2a can be provided by control unit CNT1.Control unit CNT1 can from actuator 220 receiving position signal.
The setting of Figure 21 also can be used to the laser marking device 500 of Figure 22, and namely common laser 410 and multiple intensity modulator 420a, 420b, 420c, 420d, 420e can be arranged to provide separately controllable light beam LB0a, LB0b, LB0c, LB0d, LB0e and the some separately controllable laser instruments of non-usage.
In one embodiment, figure and/or text can subsequently by using common printing machine to be printed on the web WEB1 of covering.This graphic/text is known when can be produced at the web WEB1 through covering.Through cover web WEB1 can be produced as make through cover web WEB1 comprise the first mark MRK1, this first mark MRK1 so that comprise one or more through cover through change part DOT1.First mark MRK1 can comprise the fingerprint of such as graphic/text, wherein after a while for forging object to the amendment of this graphic/text by using this fingerprint to detect.First mark MRK1 can comprise the School Affairs of such as presentation graphic/text.
With reference to Figure 23 a, the web WEB1 through covering can comprise multiple identical mark MRK1, such as, and alphabetic code " SN98765432 ".Mark MRK1 can indicate the sequence number of such as product, and the web WEB1 through covering can be used to provide the multiple paper documents (such as, contract or warranty) relevant with described product.Mark MRK1 can specify such as manufacture batch, and the web WEB1 through covering can be used to provide and described manufacture batch relevant file.
In one embodiment, the whole surface of main web WEB0 may cover with additive A D1 and/or flood substantially.
Additive A D1 also such as can be applied to strip, thus the treated part PR1 covering with additive A D1 after the web WEB1 of covering is included in the one or more foundation DOT0 of formation and/or flood.Therefore, the web WEB1 through covering also can comprise the part PR0 without covering, and it not yet covers with additive A D1 and it not yet floods with additive A D1.The width (on the SY of direction) of treated part PR1 can be less than the overall width (on the SY of direction) of the web WEB1 through covering.This can reduce the consumption of additive A D1.Such as, the top surface being less than 40% of main web WEB0 can cover with additive A D1 and/or flood.Such as, the area of treated part PR1 can in the scope of 1% to 40% of the top surface area of main web WEB0.Additive A D1 can be applied on moving web thus treated part PR1 aligns with the direction of propagation of web WEB1.Additive can be such as applied in by curtain coating, injection or painting.
Additive A D1 can be applied as such as make the treated part PR1 of the band shape of every sheet width such as in the scope of 2mm to 50mm.
When applying whole surface, or when applying additive A D1 as continuous band, the coating unit 600 for applying additive A D1 does not need to control at a high speed.
With reference to Figure 23 b, the web WEB1 through covering can comprise multiple not isolabeling MRK1, such as, and alphabetic code " 31OCT 2012P1 " and " 31OCT 2012P2 ".This mark can specify such as date and/or page number.Web WEB1 can be cut to form sheet separately by such as CUT1 along the line subsequently.
With reference to Figure 23 c, to cover with additive A D1 and/or the shape of treated part PR1 of flooding can also correspond essentially to the shape of the part DOT1 through change.Treated part PR1 can surround through change part DOT1 thus treated part PR1 extend on foundation DOT0.Treated part PR1 can also cover the part without change around foundation DOT0.
Such as, the part DOT1 through change through covering can have the shape of letter " A ", and treated part PR1 can have the shape of the shape being substantially similar to letter " A ".
Additive A D1 such as also by using nozzle array to be applied to mobile main web WEB0, is wherein controlled separately by using snap action value by the additive stream of each nozzle.
With reference to Figure 23 d, the web WEB1 through covering can comprise mixed mark HMRK1, and it comprises the one or more part DOT2 of part DOT1 and one or more second through changing through change through covering.Through cover through change part DOT1 by change with laser beam LB1 local main web WEB0 at least one optical property and in main web WEB0 basis of formation part DOT0 and by covering with additive A D1 and/or flooding foundation DOT0 to produce.Second can by laser beam being formed at described covering and/or dipping afterwards through the part DOT2 of change.
The part DOT1 through change through covering such as is formed by the main web WEB0 of coking, and second is such as formed by the inactive fluorescence from additive A D1 through the part DOT2 of change.Therefore, attempt the part DOT1 through change of amendment through covering subsequently the additional of fluorescence caused from additive A D1 is stopped using.
Such as formed by the fluorescence of the autonomous web WEB0 that stops using through the part DOT1 through change of covering, and second is such as formed by the color of change additive A D1 through the part DOT2 of change.Therefore, attempt the part DOT1 through change of amendment through covering subsequently and will cause the additional change of the color of additive A D1.
In one embodiment, the part DOT1 through change through covering can form the first mark MRK1, and second can form the second mark MRK2 through the part DOT2 of change.The shape of the second mark MRK2 can mark the shape of MRK1 substantially with first identical, and wherein the second mark MRK2 can be shifted to allow to mark second MRK2 and first about the first mark MRK1 and marks MRK1 and make comparisons.Attempt subsequently by laser beam revise the first mark MRK1 also amendment second is marked MRK2 thus the shape of modified second mark MRK2 by from modified first to mark the shape of MRK1 different.Therefore, this amendment is made comparisons easily detect by the second mark MRK2 and first is marked MRK1.Mark both MRK1, MRK2 can form such as identical alphameric code, such as, and code " SEC001 ".
Mixed mark HMRK1 is formed by the whole surface covered with additive A D1 and/or flood web WEB1 substantially.
With reference to Figure 23 e, additive A D1 also can be applied to strip.Web WEB1 through covering can comprise without the part covered to reduce the consumption of additive A D1.Additive A D1 can be used as continuous print band substantially and is applied in mobile main web.
With reference to Figure 23 f, treated part PR1 does not need to extend continuously on longitudinal SX.Web WEB1 through covering can be formed such as thus the additive A D1 stream being applied to main web is unlocked and closes.This can reduce the consumption of additive A D1 further.
In one embodiment, the composition of main web WEB0 and the composition of additive A D1 can be selected such that the part DOT1 through change through covering can at the notified only just change additive A D1 when using the laser beam of its wavelength in predetermined wavelength range of later phases.The composition of additive A D1 can be selected such that the wavelength of modal laser type is outside described predetermined wavelength range.The composition of additive A D1 can be selected such that any one that described predetermined wavelength range does not comprise in following wavelength: 193nm (excimer laser), 337nm (neutron laser instrument), 1064nm (Nd:YAG), 10.6 μm (carbon dioxide laser).Therefore, attempt that mark may cause additive optically can detect change by using such as CO2 laser instrument to forge.
To those skilled in the art, be obviously intelligible according to the amendment of product of the present invention, method and apparatus and variant.Accompanying drawing is schematic.The above-mentioned each specific embodiment be described with reference to the drawings is only illustrative and not intended to be limiting scope of the present invention defined by the appended claims.
Claims (28)
1., in the upper method producing mark of web (WEB1), described method comprises:
-come to form first foundation part (DOT0) in described main web (WEB0) by least one optical property changing main web (WEB0) with the first laser beam (LB1) local, and
-after described first foundation part (DOT0) has been formed, form web (WEB1) through covering by cover with additive (AD1) and/or flood described main web (WEB0),
Wherein said main web (WEB0) comprises cellulose fibre, the described web (WEB1) through covering comprises optically can detect first through change part (DOT1), described first comprises described first foundation part (DOT0) through change part (DOT1) and is bonded to a certain amount of additive (AD1) of described first foundation part (DOT0), and the composition of described additive (AD1) has been selected such that the intensity of the second laser beam (LB2) wherein equals to cause the minimum threshold strength (I that optically can detect needed for change of the described main web (WEB0) be included in the described web (WEB1) through covering
mIN, 1) situation in, what the described web (WEB1) through covering is exposed to described second laser beam (LB2) causes being included in described additive (AD1) in the described web (WEB1) through covering optically can detect change.
2. the method for claim 1, it is characterized in that, described main web (WEB0) comprises fluorescent material, and described first is less than the fluorescent yield of reference section (REF1) of the described web (WEB1) through covering through the fluorescent yield of change part (DOT1).
3. method as claimed in claim 1 or 2, it is characterized in that, when the described web (WEB1) through covering is irradiated by the visible ray (VIS0) not comprising ultraviolet light, described first through change part (DOT1) and reference section (REF1) between contrast be not that bore hole (E1) is detectable, and wherein when described through cover web (WEB1) irradiated by ultraviolet light (VIS0) time, described first through change part (DOT1) and described reference section (REF1) between described contrast be that bore hole (E1) is detectable.
4. the method as described in claim arbitrary in Claim 1-3, is characterized in that, main web (WEB0) comprises the fluorescent material selected from the group be made up of pyrazoline, cumarin and talan.
5. the method as described in claim arbitrary in claim 1 to 4, is characterized in that, additive (AD1) comprises fluorescent material.
6. method as claimed in claim 5, it is characterized in that, the composition of described additive (AD1) has been selected such that the intensity of the second laser beam (LB2) wherein equals to cause the minimum threshold strength (I that optically can detect needed for change of the described main web (WEB0) be included in the described web (WEB1) through covering
mIN, 1) situation in, described additive (AD1) is exposed to described second laser beam (LB2) and decreases the fluorescent yield of described additive (AD1) be included in the described web (WEB1) through covering partly.
7. the method as described in claim arbitrary in claim 1 to 6, is characterized in that, described additive (AD1) comprises the fluorescent material selected from the group be made up of pyrazoline, cumarin and talan.
8. the method for claim 1, it is characterized in that, described first is darker than the color (C0) of the reference section (REF1) of the described web (WEB1) through covering through the color (C1) of change part (DOT1), described additive (AD1) is fluorescence, and the composition of described additive (AD1) has been selected such that the intensity of the second laser beam (LB2) wherein equals to cause the minimum threshold strength (I that optically can detect needed for change of the described main web (WEB0) be included in the described web (WEB1) through covering
mIN, 1) situation in, described additive (AD1) is exposed to described second laser beam (LB2) and decreases the fluorescent yield of described additive (AD1) be included in the described web (WEB1) through covering partly.
9. the method for claim 1, it is characterized in that, described first is darker than the color (C0) of the reference section (REF1) of the described web (WEB1) through covering through the color (C1) of change part (DOT1), and described additive (AD1) is arranged to change color when being exposed to described second laser beam (LB2).
10. the method as described in claim arbitrary in claim 1 to 9, is characterized in that, described additive (AD1) is at the wavelength (λ of described first laser beam (LB1)
0) optical absorption at place higher than described main web (WEB0) at described wavelength (λ
0) optical absorption at place.
11. methods as described in claim arbitrary in claim 1 to 9, is characterized in that, the described wavelength (λ of described first laser beam (LB1)
0) in the scope of scope 180nm to 380nm.
12. methods as claimed in claim 11, is characterized in that, the wavelength of described second laser beam (LB2) is in the scope of scope 180nm to 380nm.
13. methods as described in claim arbitrary in claim 1 to 9, is characterized in that, the wavelength (λ of described first laser beam (LB1)
0) in the scope of scope 800nm to 11 μm.
14. methods as claimed in claim 13, is characterized in that, the described wavelength (λ of described second laser beam (LB2)
0) in the scope of scope 800nm to 11 μm.
15. methods as described in claim arbitrary in claim 1 to 14, it is characterized in that, the described wavelength of described second laser beam (LB2) equals the described wavelength (λ of described first laser beam (LB1)
0).
16. methods as described in claim arbitrary in claim 1 to 15, is characterized in that, the thickness (d of described foundation (DOT0)
0) be less than the thickness (D of described main web (WEB0)
w0).
17. the method for claim 1, is characterized in that, described first comprises the hole of filling with described additive (AD1) through change part (DOT1), and described additive (AD1) is transparent or semitransparent.
18. methods as described in claim arbitrary in claim 1 to 17, it is characterized in that, the composition of described additive (AD1) has been selected such that the intensity of the second laser beam (LB2) wherein equals to cause the minimum threshold strength (I that optically can detect needed for change of the described main web (WEB0) be included in the described web (WEB1) through covering
mIN, 1) situation in, described additive (AD1) is exposed to described second laser beam (LB2) and changes the described gloss number of web (WEB1) through covering partly.
19. methods as described in claim arbitrary in claim 1 to 18, it is characterized in that, the top side additive (AD1) of described main web (WEB0) covers and/or floods, and the bottom side additive (AD1, AD2) of same described main web (WEB0) covers and/or floods.
20. methods as described in claim arbitrary in claim 1 to 19, it is characterized in that, be included in after described main web (WEB0) covered with described additive A D1 and/or soak into further, by laser beam (LB2) in the upper generation second of the described web (WEB1) through covering through change part (DOT2).
21. methods as claimed in claim 20, is characterized in that, described second has the precalculated position relative to described first through the position of change part (DOT1) through change part (DOT2).
22. methods as described in claim 20 or 21, is characterized in that, described second has the pre-sizing relative to described first through the size of change part (DOT1) through change part (DOT2).
23. methods as described in claim arbitrary in claim 20 to 22, it is characterized in that, formed and comprise described first through change part (DOT1) and described second through changing the alphanumeric indicia (MRK1, MRK2) of part (DOT2).
24. methods as described in claim arbitrary in claim 1 to 23, is characterized in that, described main web (WEB0) is at the described speed (V being exposed to described first laser beam (LB1) period
1) in 5 scopes to 50m/s.
25. methods as described in claim arbitrary in claim 1 to 25, it is characterized in that, the whole top surface of described main web (WEB1) covers with described additive (AD1) and/or floods substantially.
26. methods as described in claim arbitrary in claim 1 to 25, is characterized in that, at least 40% of the top surface of described main web (WEB1) covers with described additive (AD1) and/or floods.
27. 1 kinds of webs (WEB1) through covering, comprise: the main web (WEB0) covering through additive (AD1) and/or flood, the described web (WEB1) through covering is included in before described main web (WEB0) to cover with described additive (AD1) and/or flood further, what obtain by using the first laser beam (LB1) formation first foundation part (DOT0) in described main web (WEB0) optically can detect first through change part (DOT1)
It is characterized in that, described main web (WEB0) comprises cellulose fibre, and described additive (AD1) has been selected such that the intensity of the second laser beam (LB2) wherein equals to cause the minimum threshold strength (I that optically can detect needed for change of the described main web (WEB0) be included in the described web (WEB1) through covering
mIN, 1) situation in, what described web (WEB1) is exposed to described second laser beam (LB2) causes described additive (AD1) optically can detect change.
28. webs (WEB1) as claimed in claim 27, is characterized in that, described first is less than the fluorescent yield of the reference section (REF1) of described web (WEB1) through the fluorescent yield of change part (DOT1).
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/FI2012/050842 WO2014033356A1 (en) | 2012-08-30 | 2012-08-30 | Security-marked web |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104884707A true CN104884707A (en) | 2015-09-02 |
| CN104884707B CN104884707B (en) | 2016-12-28 |
Family
ID=50182571
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201280075511.9A Expired - Fee Related CN104884707B (en) | 2012-08-30 | 2012-08-30 | Web with security sign |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP2890846B1 (en) |
| CN (1) | CN104884707B (en) |
| WO (1) | WO2014033356A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115157835A (en) * | 2022-06-08 | 2022-10-11 | 中国科学院上海光学精密机械研究所 | A method of laser marking invisible patterns based on photobleaching |
| CN116056908A (en) * | 2020-04-09 | 2023-05-02 | 泰雷兹数字安全法国股份有限公司 | Data carrier with protection against subsequent laser marking |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10486454B2 (en) | 2014-03-13 | 2019-11-26 | Entrust Datacard Corporation | Background image security feature |
| NL2017141B1 (en) * | 2016-07-08 | 2018-01-15 | Tocano Holding B V | Printing apparatus with improved permanency of the print |
| CN109689375A (en) * | 2016-07-08 | 2019-04-26 | 托卡诺控股有限公司 | With the improved permanent printing equipment of printing |
| GB2567811B (en) * | 2017-10-19 | 2020-06-17 | De La Rue Int Ltd | Security devices, security articles, security documents and methods for their manufacture |
| CN114650915B (en) * | 2019-11-22 | 2024-05-31 | 科思创德国股份有限公司 | Layer structure with modified structure and production thereof |
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| US5340628A (en) * | 1992-11-05 | 1994-08-23 | Ccl Label, Inc. | Laser markable laminated sheet |
| CN1135419A (en) * | 1996-01-11 | 1996-11-13 | 王旻 | Printing method for fluorescent anti-fake mark on pakage of thin-film plastic aluminium-iron etc. package material |
| CN1143572A (en) * | 1995-08-23 | 1997-02-26 | 魏树根 | Method for making secondary encryption laser holographic imprinted aluminium plating film |
| US20080187851A1 (en) * | 2004-09-10 | 2008-08-07 | Stora Enso Oyj | Method of Marking Material, Marked and Verification of Genuineness of a Product |
| US20080295984A1 (en) * | 2004-01-05 | 2008-12-04 | Stora Enso Oyj | Method for Producing Identification Marks on Paper or Board and a Marked Material Made with the Method |
| CN101603280A (en) * | 2009-06-26 | 2009-12-16 | 吕奏礼 | Processing method of transparent fragile paper |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2003257466B2 (en) * | 2002-07-18 | 2007-08-02 | Giesecke & Devrient Gmbh | Security document |
| PL1744899T3 (en) * | 2004-05-05 | 2013-06-28 | Giesecke Devrient Currency Tech Gmbh | Security document |
-
2012
- 2012-08-30 CN CN201280075511.9A patent/CN104884707B/en not_active Expired - Fee Related
- 2012-08-30 EP EP12883978.4A patent/EP2890846B1/en not_active Not-in-force
- 2012-08-30 WO PCT/FI2012/050842 patent/WO2014033356A1/en active Application Filing
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5340628A (en) * | 1992-11-05 | 1994-08-23 | Ccl Label, Inc. | Laser markable laminated sheet |
| CN1143572A (en) * | 1995-08-23 | 1997-02-26 | 魏树根 | Method for making secondary encryption laser holographic imprinted aluminium plating film |
| CN1135419A (en) * | 1996-01-11 | 1996-11-13 | 王旻 | Printing method for fluorescent anti-fake mark on pakage of thin-film plastic aluminium-iron etc. package material |
| US20080295984A1 (en) * | 2004-01-05 | 2008-12-04 | Stora Enso Oyj | Method for Producing Identification Marks on Paper or Board and a Marked Material Made with the Method |
| US20080187851A1 (en) * | 2004-09-10 | 2008-08-07 | Stora Enso Oyj | Method of Marking Material, Marked and Verification of Genuineness of a Product |
| CN101603280A (en) * | 2009-06-26 | 2009-12-16 | 吕奏礼 | Processing method of transparent fragile paper |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116056908A (en) * | 2020-04-09 | 2023-05-02 | 泰雷兹数字安全法国股份有限公司 | Data carrier with protection against subsequent laser marking |
| CN115157835A (en) * | 2022-06-08 | 2022-10-11 | 中国科学院上海光学精密机械研究所 | A method of laser marking invisible patterns based on photobleaching |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2014033356A1 (en) | 2014-03-06 |
| EP2890846A4 (en) | 2016-04-13 |
| CN104884707B (en) | 2016-12-28 |
| EP2890846B1 (en) | 2017-08-02 |
| EP2890846A1 (en) | 2015-07-08 |
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