JP3218527U - recoding media - Google Patents

Abstract

Provided is a recording medium that is easy to manufacture and can flexibly cope with improvements in security and aesthetics. A recording medium is formed on a flat substrate 11, a metal foil layer 23 having a predetermined shape in a plan view formed on the substrate 11 by thermal transfer, and a metal foil layer 23. And a hologram layer 22 on which a hologram capable of projecting an image is recorded by being irradiated with the projection light, and the metal foil layer 23 has a concave shape 30-1, 30-2 together with the base material 11 in a predetermined shape. Is forming. [Selection] Figure 2

Description

  Embodiments described herein relate generally to a recording medium.

Conventionally, foil stamping is known as one of printing techniques performed from the viewpoint of decoration on a medium.
The foil stamping is a process in which a metal foil on which an adhesive is deposited is thermally transferred using a metal foil stamping die (plate) at a high temperature and a high pressure (for example, see Patent Document 1).

JP-A-2005-022272

However, the above-described conventional technique is mainly intended to improve aesthetics, and cannot improve security.
Moreover, in the above conventional technique, foil stamping is performed using a pre-formed mold, so there is no problem when applying the same design, but a new mold must be created when changing the design. Therefore, it is impractical to stamp differently for each small lot printing.

  The present invention has been made in view of the above, and it is an object of the present invention to provide a recording medium that is easy to manufacture and can flexibly cope with improvements in security and aesthetics.

  The recording medium according to the embodiment is formed on a flat base material, a metal foil layer having a predetermined shape in a plan view formed on the base material by thermal transfer, and irradiated with predetermined projection light. A hologram layer on which a hologram capable of projecting an image is recorded, and the metal foil layer forms a recess together with the base material according to a predetermined shape.

FIG. 1 is an external front view of the recording medium (forgery / alteration preventing medium) of the embodiment in a state where information is recorded. FIG. 2 is a schematic cross-sectional view of the recording medium of the embodiment. FIG. 3 is an enlarged view of the foil pressing area. FIG. 4 is a partial enlarged AA sectional view of FIG. FIG. 5 is an explanatory view of a foil pressing ribbon (foil transfer ribbon). FIG. 6 is an explanatory diagram of data for forming a foil stamping area. FIG. 7 is an explanatory diagram of forming the foil pressing area.

Hereinafter, embodiments will be described in detail with reference to the drawings.
First, the recording medium of the embodiment will be described.
FIG. 1 is an external front view of the recording medium (forgery / alteration preventing medium) of the embodiment in a state where information is recorded.

  The recording medium 10 on which the information is recorded is roughly divided into a base material (transfer medium) 11, a foil pressing area 12 formed on the surface of the base material 11, and specific information such as ID information, name, and issue date. A monochrome image forming area 13 recorded in monochrome and a full color image forming area 14 for recording a full color image such as an ID photo are provided.

  In FIG. 1, there are areas other than the foil stamping area 12, the monochrome image forming area 13, and the full color image forming area 14 in the recording medium 10. 13 or the full-color image forming area 14 may be arbitrarily assigned.

  In FIG. 1, the foil stamping area 12, the monochrome image forming area 13, and the full-color image forming area 14 are separated from each other. However, the foil pressing area 12, the monochrome image forming area 13, and the full color image forming area 14 may be arranged so as to touch each other. You may do it.

FIG. 2 is a schematic cross-sectional view of the recording medium of the embodiment.
As shown in FIG. 2, the foil stamping region 12 includes convex portions 12X1 to 12X3 and concave portions 30-1 and 30-2 formed together with the base material 11.
Here, since the convex portions 12X1 to 12X3 have the same configuration, the layer structure will be described by taking the convex portion 12X1 as an example.

  As for convex part 12X1, the protective layer 21, the hologram recording layer 22, the metal foil layer 23, and the adhesive bond layer 24 are formed toward the base material 11 side from the surface side.

  The protective layer 21 is a layer for protecting the hologram recording layer 22, the metal foil layer 23, and the adhesive layer 24 and suppressing long-term deterioration of the recording medium 10.

  The hologram recording layer 22 is a layer on which various security information is recorded as a hologram, and is a layer that can project information corresponding to various security information by irradiating predetermined projection light.

In this case, when the convex portions 12X1 to 12X3 constituting the foil stamping region 12 are viewed in plan, the minimum recording unit of security information recorded is an area that can be recorded (for example, 1 mm ² ) or more. Designed to. Accordingly, the security information can be reliably projected (reproduced), and the recording medium 10 becomes a layer for authenticity determination or forgery prevention.

  The metal foil layer 23 is formed integrally with the hologram recording layer 22, imparts aesthetics to the recording medium 10, and recesses 30-1, 30 formed in cooperation with the substrate 11 in the foil pressing region 12. 2 is a layer in which various images such as characters and marks (in the case of the example in FIG. 1, “Nippon Hanako”) are formed so as to be visible.

  The adhesive layer 24 is a layer for integrally bonding the protective layer 21, the hologram recording layer 22, and the metal foil layer 23 to the base material 11 in the foil pressing step.

Next, the material which comprises a base material and each layer is demonstrated.
First, the substrate 11 will be described.
As the substrate 11, polyester resin, polyethylene terephthalate (PET), glycol modified polyester (PET-G), polypropylene (PP), polycarbonate (PP), polychlorinated, which are generally used as card, paper, and film materials. It is possible to use a resin that can be processed into a film shape or a plate shape, such as vinyl (PVC), styrene butadiene copolymer (SBR), polyacrylic resin, polyurethane resin, or polystyrene resin.

  Furthermore, a resin having whiteness, surface smoothness, heat insulation, etc. by adding silica, titanium oxide, calcium carbonate, alumina or the like as a filler to the above-described resin can be used as the base material 11.

  For example, in addition to these, paper (paper) and resin materials described in Japanese Patent No. 3889431, Japanese Patent No. 4215817, Japanese Patent No. 4329744, Japanese Patent No. 4391286, and the like can be used.

  Specifically, polyethylene terephthalate (A-PET, PETG), polycyclohexane 1,4-dimethylphthalate (PCT), polystyrene (PS), polymethyl methacrylate (PMMA), transparent ABS (MABS), polypropylene (PP) , Polyethylene (PE), polyvinyl alcohol (PVA), styrene butadiene copolymer (SBR), acrylic resin, acrylic modified urethane resin, styrene / acrylic resin, ethylene / acrylic resin, urethane resin, rosin modified maleic resin, vinyl chloride / acetic acid Vinyl copolymers, polyvinyl acetal resins, polyamide resins, cellulose resins such as hydroxyethyl cellulose, hydroxypropyl cellulose, nitrocellulose, polyolefin resins, polyamide resins, raw Disintegrable resin, other resins such as cellulose resins, paper substrate, a metal material or the like can be used.

  The above resins and fillers are only examples, and other materials can be used as long as processability and functionality are satisfied.

In the above configuration, it is preferable to use a white or transparent resin.
Here, the term “transparent” means that the light transmittance in the visible light region is 30% or more on average in the visible light region.

Next, the protective layer 21 is configured using a photocurable resin or the like.
As the hologram recording layer 22, a photopolymer or the like is used, and refractive index modulation is formed according to the intensity distribution of the interference fringe pattern obtained by superimposing the information light corresponding to the security information and the reference light. Has been made.
The metal foil layer 23 can be formed only of a metal foil such as a gold foil, a silver foil, and an aluminum foil. In addition, a pigment for changing the color of reflected light is applied to the surface of the metal foil. It is also possible to configure.
The adhesive layer 24 is composed of a thermoplastic resin adhesive or the like.

Next, the configuration of the monochrome image forming area 13 and the full color image forming area 14 will be described.
The monochrome image forming region 13 includes, for example, pigment particles, and is configured as a layer that irreversibly develops color when the pigment particles absorb and carbonize laser light that is recording light. Colored black coloring regions 13X1 to 13X3 are provided.

The full-color image forming area 14 includes, for example, a yellow coloring layer, a magenta coloring layer, and a cyan coloring layer (not shown), and each coloring layer is disposed separately through an intermediate layer (not shown). Each color forming layer constituting the full-color image forming region 14 is, for example, a color material that develops color when a certain threshold temperature is exceeded using a highly transparent resin such as polyvinyl alcohol, polyvinyl acetate, or polyacryl as a binder. , Leuco dyes, leuco dyes or temperature indicating materials, and developers are used.
Examples of leuco dyes, leuco dyes or temperature indicating materials include 3,3-bis (1-n-butyl-2-methyl-indol-3-yl) phthalide, 7- (1-butyl-2-methyl-1H-indole- 3-yl) -7- (4-diethylamino-2-methyl-phenyl) -7H-furo [3,4-b] pyridin-5-one, 1- (2,4-dichloro-phenylcarbamoyl) -3, 3-dimethyl-2-oxo-1-phenoxy-butyl]-(4-diethylamino-phenyl) -carbamic acid isobutyl ester, 3,3-bis (p-dimethylaminophenyl) phthalide, 3,3-bis (p- Dimethylaminophenyl) -6-dimethylaminophthalide (also known as crystal violet lactone = CVL), 3,3-bis (p-dimethylaminophenyl) -6-amino Talide, 3,3-bis (p-dimethylaminophenyl) -6-nitrophthalide, 3,3-bis3-dimethylamino-7-methylfluorane, 3-diethylamino-7-chlorofluorane, 3-diethylamino-6 -Chloro-7-methylfluorane, 3-diethylamino-7-anilinofluorane, 3-diethylamino-6-methyl-7-anilinofluorane, 2- (2-fluorophenylamino) -6-diethylaminofluorane 2- (2-fluorophenylamino) -6-di-n-butylaminofluorane, 3-piperidino-6-methyl-7-anilinofluorane, 3- (N-ethyl-p-toluidino) -7 -(N-methylanilino) fluorane, 3- (N-ethyl-p-toluidino) -6-methyl-7-anilinofluorane, 3-N Ethyl-N-isoamylamino-6-methyl-7-anilinofluorane, 3-N-methyl-N-cyclohexylamino-6-methyl-7-anilinofluorane, 3-N, N-diethylamino-7- It is possible to use coloring dyes such as o-chloroanilinofluorane, rhodamine B lactam, 3-methylspirodinaphthopyran, 3-ethylspirodinaphthopyran, 3-benzylspironaphthopyran.

Further, as the developer, any acidic substance used as an electron acceptor in a heat-sensitive recording material can be used.
For example, inorganic substances such as activated clay and acidic clay, inorganic acids, aromatic carboxylic acids, anhydrides or metal salts thereof, organic sulfonic acids, other organic acids, organic developers such as phenolic compounds, etc. are developed. Although mentioned as a coloring agent, a phenol type compound is preferable.

  Specific examples of the developer include bis-3-allyl-4-hydroxyphenylsulfone, polyhydroxystyrene, zinc salt of 3,5-di-t-butylsalicylic acid, zinc salt of 3-octyl-5-methylsalicylic acid, Phenol, 4-phenylphenol, 4-hydroxyacetophenone, 2,2'-dihydroxydiphenyl, 2,2'-methylenebis (4-chlorophenol), 2,2'-methylenebis (4-methyl-6-t-butylphenol) 4,4'-isopropylidenediphenol (also known as bisphenol A), 4,4'-isopropylidenebis (2-chlorophenol), 4,4'-isopropylidenebis (2-methylphenol), 4,4 ' Ethylenebis (2-methylphenol), 4,4′-thiobis (6-tert-butyl-3-methylphenol) 1, 2-bis (4-hydroxyphenyl) -cyclohexane, 2,2'-bis (4-hydroxyphenyl) -n-heptane, 4,4'-cyclohexylidenebis (2-isopropylphenol) And phenolic compounds such as 4,4′-sulfonyldiphenol, salts of the phenolic compounds, salicylic acid anilide, novolac-type phenolic resin, benzyl p-hydroxybenzoate, and the like.

  As the intermediate layer, polypropylene (PP), polyvinyl alcohol (PVA), styrene butadiene copolymer (SBR), polystyrene, polyacryl, or the like can be used.

  Further, the surface of the monochrome image forming area 13 and the full color image forming area 14 includes a colorless and transparent protective layer (not only physically protecting but also UV-cutting etc.) so that the monochrome image or the full color image can be visually recognized. ) Is provided.

FIG. 3 is an enlarged view of the foil pressing area.
In the case of the example in FIG. 3, the foil stamping region 12 includes a plurality of convex portions 12X1 to 12X5 and a plurality of concave portions 30-1 to 30-6.

  Here, the plurality of concave portions 30-1 to 30-6 form images such as characters and marks when viewed in plan, and the plurality of convex portions 12X1 to 12X5 constitute the background of the image.

  In the case of the example in FIG. 3, the plurality of recesses 30-1 to 30-6 are surrounded by at least one of the protrusions 12X1 to 12X5 to form holes, but are not necessarily surrounded by holes. It is not necessary to form the groove, and the groove may be formed in a notch shape in plan view such that one of the end portions reaches the end portion of the convex portion 12X1.

FIG. 4 is a partial enlarged AA sectional view of FIG.
As shown in FIG. 4, the concave portion 30-1 is formed by the convex portion 12X1 and the convex portion 12X3, and the concave portion 30-2 is formed by the convex portion 12X1, the convex portion 12X4, and the convex portion 12X5.

Next, formation of the foil stamping area of the embodiment will be described.
FIG. 5 is an explanatory view of a foil pressing ribbon (foil transfer ribbon).
The foil pressing ribbon 40 includes a tape-like base film 41 that is peeled off and removed after the foil pressing, and a protective layer 21, a hologram recording layer 22, a metal foil layer 23, and an adhesive layer formed on one surface of the base film 41. 24.

FIG. 6 is an explanatory diagram of data for forming a foil stamping area.
FIG. 6A is an explanatory diagram of an image 50A corresponding to the data for forming a foil stamping area when characters are formed as an image. In the figure, the portion of the image 50A corresponding to the data for forming a foil stamping area is expressed in black. This corresponds to a portion where the foil pressing is performed by performing thermal transfer on the ribbon 40 for foil pressing.

FIG. 6B is an explanatory diagram of an image 50B corresponding to the foil pressing area forming data when the mark is formed as an image. In the figure, the portion of the image 50B corresponding to the foil pressing area forming data is expressed in black. This corresponds to a portion where the foil pressing is performed by performing thermal transfer on the ribbon 40 for foil pressing.
Therefore, in both the case of the foil stamping area forming data corresponding to the image 50A in FIG. 6A and the case of the foil pressing area forming data corresponding to the image 50B in FIG. The part which formed the part and expressed white forms a recessed part.

For this reason, in the case of FIG. 6B, the area of the formed convex portion is smaller than the area of the concave portion, but as described above, the security information recorded when viewed in plan view The shape of the portion expressed in black is set so that a portion having an area that can be recorded in the minimum recording unit (for example, 1 mm ² ) or more is formed.

Next, the foil stamping area forming apparatus of the embodiment will be described.
The foil stamping area forming apparatus of the present embodiment is configured as a laser recording apparatus. For example, a laser oscillator that outputs near-infrared laser light (= wavelength λ) and a beam that expands the beam diameter of the near-infrared laser light. A first motor having an expander and a first motor that drives a first direction scan mirror that reflects near infrared laser light and drives the first direction scan mirror to scan the near infrared laser light in a first direction; Drives the one-way scanning unit and the second-direction scan mirror that reflects the near-infrared laser light, and drives the second-direction scan mirror to scan the near-infrared laser light in the second direction orthogonal to the first direction. A second direction scanning unit including a second motor, and a condensing lens (F ・) that condenses the near-infrared laser light guided through the first direction scanning unit and the second direction scanning unit on the recording medium 10. θ lens) And a stage for transporting and holding the recording medium 10 to a predetermined position, and the irradiation position and irradiation intensity of the far-infrared laser light are calculated based on the input image data that is input, and the entire laser recording apparatus is controlled. Control unit, output control unit for controlling laser output of laser oscillator based on calculation result of control unit, control of first motor and second motor based on calculation result of control unit, recording near infrared laser beam An irradiation position control unit that controls an irradiation position on the medium 10.

In the above structure, a semiconductor laser, a fiber laser, a YAG laser, a YVO ₄ laser, or the like, which is a laser in the near infrared region, can be used as the laser oscillator.

  Next, the recording process to the recording medium 10 in the foil stamping area forming apparatus (laser recording apparatus) of the embodiment will be described.

  First, the control unit of the laser recording apparatus carries the recording medium 10 to the recording position via a conveyance device (not shown).

  Subsequently, the control unit of the laser recording apparatus detects the recording medium 10 carried in by a sensor (not shown), and fixes the recording medium 10 at a predetermined carrying position by a fixing device (not shown).

Subsequently, the control unit of the laser recording apparatus receives the input image data when the foil pressing area formation data corresponding to the image shown in FIG. 6 and the input image data as the desired monochrome image formation data and full color image formation data are input. Is converted into irradiation data for each pixel.
Subsequently, the control unit of the laser recording apparatus sets the color data according to the combination of the layers to be colored based on the formation data for each pixel (foil pressing area formation data, monochrome image formation data, and full color image formation data) color data. Convert to laser irradiation parameter value.

Here, the laser irradiation parameter value is specifically a power setting value, a scanning speed setting value, a pulse width setting value, an irradiation repetition number setting value, a scanning pitch setting value, or the like.
Subsequently, the control unit controls the output control unit and the irradiation position control unit, performs image recording in the foil stamping region 12 using near infrared laser light based on the set laser irradiation parameter value, and monochrome Image recording is performed to cause the image forming area 13 and the full-color image forming area 14 to develop colors.

FIG. 7 is an explanatory diagram of forming the foil pressing area.
In the foil pressing area 12, near infrared laser light L is irradiated, heat is transmitted to a portion corresponding to the foil pressing area of the foil pressing area forming data of the foil pressing ribbon 40, and a heating area TA is formed. It becomes.
As a result, the thermal transfer layer 20 of the foil pressing ribbon 40 is bonded by the adhesive force of the adhesive layer 24, and the thermal transfer layer 20, as a result, the protective layer 21, the hologram recording layer 22, the metal foil layer 23, and the adhesive layer 24 are based. The material is transferred to the material 11.
Thereafter, the foil pressing is completed by peeling the base film 41.
As described above, according to the present embodiment, since the thermal transfer is performed based on the data for forming the foil stamping area which is image data, the formation location of the foil stamping area 12 and the design of the foil stamping area 12 can be easily determined. The desired foil pressing can be easily performed.
Furthermore, a hologram recording layer 22 in which various security information is written can be arranged in the foil stamping area, which can improve security and easily prevent forgery and falsification of recording media that require high security such as passports. Further, it is possible to easily determine the authenticity.

  In the above description, the foil stamping region 12 is formed using a laser, but the foil stamping region 12 may be formed using a thermal head or the like.

  Although several embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the device. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are also included in the invention described in the claims of the utility model registration and the equivalent scope thereof.

DESCRIPTION OF SYMBOLS 10 Recording medium 11 Base material 12 Foil pressing area 12X1-12X5 Convex part 13 Monochrome image formation area 13X1 Black color development area 14 Full color image formation area 20 Thermal transfer layer 21 Protection layer 22 Hologram recording layer 23 Metal foil layer 24 Adhesive layer 30-1 30-6 Concave part 40 Ribbon for thermal transfer 41 Base film 44 Irradiation position control part L Near infrared laser beam TA Heating area

Claims (6)

A flat substrate;
A plan view formed by thermal transfer on the substrate, a metal foil layer having a predetermined shape,
A hologram layer formed on the metal foil layer and recorded with a hologram capable of projecting an image by being irradiated with predetermined projection light; and
According to the predetermined shape, the metal foil layer forms a recess together with the base material,
recoding media. The recess is formed as a hole or a groove,
The recording medium according to claim 1. In the hologram layer, an image corresponding to security information is recorded as the hologram,
The recording medium according to claim 1 or 2. The predetermined shape is formed so that the hologram layer can record at least one image of a minimum unit capable of projecting the security information.
The recording medium according to claim 3. The predetermined shape is a shape including an area where the image of the minimum unit can be recorded,
The recording medium according to claim 4. The hologram layer is formed so as to cover the entire upper surface of the metal foil layer,
The recording medium according to any one of claims 1 to 5.