[go: up one dir, main page]

US3582328A - Planographic printing plate from mercuric ion on silver diffusion transferred image - Google Patents

Planographic printing plate from mercuric ion on silver diffusion transferred image Download PDF

Info

Publication number
US3582328A
US3582328A US697028A US3582328DA US3582328A US 3582328 A US3582328 A US 3582328A US 697028 A US697028 A US 697028A US 3582328D A US3582328D A US 3582328DA US 3582328 A US3582328 A US 3582328A
Authority
US
United States
Prior art keywords
layer
silver
mercury
colloid
pattern
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.)
Expired - Lifetime
Application number
US697028A
Other languages
English (en)
Inventor
Louis Maria De Haes
Johannes Josephus Vanheertum
Hugo Karel Gevers
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Agfa Gevaert NV
Original Assignee
Agfa Gevaert NV
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Agfa Gevaert NV filed Critical Agfa Gevaert NV
Application granted granted Critical
Publication of US3582328A publication Critical patent/US3582328A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
    • G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
    • G03F7/004—Photosensitive materials
    • G03F7/06—Silver salts
    • G03F7/063—Additives or means to improve the lithographic properties; Processing solutions characterised by such additives; Treatment after development or transfer, e.g. finishing, washing; Correction or deletion fluids

Definitions

  • a planographic printing plate is prepared from sheet material carrying an outer hydrophilic colloid layer thereon by creating a pattern of finely divided silver particles disposed essentially at the surface of the colloid layer and treating the colloid layer with an aqueous composition containing mercury(II) ions in a sufficient concentration of about 5-50 gms. per liter to render the pattern of silver particles receptive to a hydrophobic ink. If not already hardened, the colloid layer should be hardened prior to printing in any conventional way in order to preclude transfer of colloid material from the layer during printing.
  • the pattern of finely divided silver particles at the surface of the layer is preferably produced by means of the known silver complex diffusion transfer process, and the colloid layer can contain one or more substances often referred to as development nuclei for promoting the deposition on the surface thereof of metallic silver particles from the diffusing complexed silver halide, or such substances can be supplied to the layer in other ways, such as via the development bath.
  • This invention relates to a method for the preparation of planographic printing plates by converting silver images into hydrophobic ink-receptive images.
  • the method for the preparation of a planographic printing plate comprises treating a sheet material, having an outer hydrophilic colloid layer carrying at its surface a pattern of finely divided silver particles, with an aqueous composition containing mercury(II) ions in a proportion whereby the character of the pattern of silver particles on the surface of the said outer hydrophilic colloid is modified so as to become receptive to a hydrophobic ink, the said outer hydrophilic colloid layer being hardened before, during or after the said treatment, and at least to such an extent that no substantial amount of colloid is transferred on printing.
  • This method is very simple and comprises only one real processing step. Any additional treatment usual in the preparation of planographic printing plates such as the strengthening of the printing parts, is not necessary and may be omitted.
  • the pattern of finely divided silver particles may be produced in different ways.
  • the silver particles may be deposited onto the outer colloid layer in an electrolytical way or by an electrochemical interaction.
  • the pattern of silver particles is produced in a photographic way.
  • a silver pattern obtained by image-Wise exposure and development of a common light-sensitive silver halide emulsion layer is generally less suited in that the silver particles are located over the full depth of the light-sensitive layer and are not present to a sufficient degree at the surface thereof.
  • Photographic images ob- 3,582,328 Patented June 1, 1971 tained in such a way can generally be made more suitable for carrying out the method of the invention by intensifying the photographic silver image at the surface by means of an addition silver deposition i.e. by submitting the said silver image to an intensification generally known in the art.
  • a method according to which very suitable silver patterns can be obtained at the surface of an outer hydrophilic colloid layer is the generally known silver complex diffusion transfer process in all its possible embodiments, since according to this process the silyer deposition mainly occurs at the outer surface of the layer containing the substance and/ or substances for promoting the silver deposition from the diffusing complexed silver halide i.e. the so-called development nuclei.
  • a first embodiment there can be proceeded according to the common silver complex diffusion transfer process wherein a separate light-sensitive material and image-receiving material are used, the so-called development nuclei being present in the outer colloid layer of the image-receiving material whereby the deposition of the diffusion transfer silver occurs mainly at the surface of the said outer colloid layer.
  • a waterpermeable hydrophilic colloid layer can be provided on top of the silver halide emulsion layer of the light-sensitive material as described in the British patent specifica tions 869,190; 998,955 and 998,956, or a special type of image-receiving material can be used as is known from the British patent specifications 1,013,344 and 1,054,252.
  • Suitable substances for promoting the silver deposition from the diffusing complexed silver halide are sulphides of heavy metals such as the sulphides of antimony, bismuth, cadmium, cobalt, lead, nickel, silver and zinc.
  • Other suitable salts are the selenides, polysulphides, polyselenides, mercaptanes and tin (1H) halides.
  • Heavy metals or their salts and fogged silver halides are suitable too.
  • the complexed salts of lead and zinc sulphides are active alone as well as mixed with thioacetamide, dithiobiuret and dithiooxamide.
  • Heavy metals, preferably silver, gold, platina, palladium, and mercury may be used in their colloidal form.
  • the support of the photographic material comprising the silver halide emulsion layer may be any usual flexible support sheet eg, a paper sheet, but preferably is a transparent hydrophobic usual film support, such as a support of cellulose triacetate or of a polyester e.g. polyethylene terephthalate, advantageously provided with an antihalation layer on its front side or on its backside or incorporating an antihalation dye or pigment in the transparent film support or in the silver halide emulsion layer. Preferably a red or black antihalation dye or pigment is applied.
  • the silver halide emulsion layer preferably has a sensitivity of the order as normally required for camera exposure.
  • the silver halide emulsion layer generally comprises an amount of silver halide equivalent to from about .5 g. to about 1.5 g. of silver nitrate and preferably amounting only to the equivalent of about 1 g. of silver nitrate.
  • a suitable subbing layer is provided for strongly adhering the hydrophilic colloid layer(s) to the support sheet.
  • the development nuclei can be supplied to the lightsensitive material by the processing liquid for carrying out the diffusion transfer process.
  • the development nuclei will deposit from the processing liquid onto the surface of the light-sensitive material at the development stage and as a result the diffusion transfer silver deposition will also occur at this outer surface of the light-sensitive material. It is the latter diflusion transfer silver image that will be converted into the ink-receptive printing areas of a planographic printing plate and not the silver image resulting from the primary development of the image-wise exposed silver halide.
  • the development nuclei are supplied by the processing liquid and preferably according to said embodiment wherein also a colloid layer is provided on top of the silver halide emulsion layer it is also possible to transfer a diffusion transfer silver containing stratum to a suitable support and to use the resulting material as starting material for the preparation of a planographic printing plate according to the method of the invention.
  • a colloid layer is provided on top of the silver halide emulsion layer
  • the development nuclei for the diffusion transfer image formation instead of being supplied by the processing liquid, can also be supplied to the image-receiving material by a pre-treatment with a liquid composition containing such nuclei.
  • the development nuclei may be provided in a colloid layer on top of the silver halide emulsion layer at the preparation stage; in this way a multilayer material is obtained.
  • a multilayer material is known among others from British patent specifications 746,186 and 758,627.
  • This transfer to another sheet may be avoided by substantially or completely concentrating the development nuclei at the free surface of the outer colloid layer of the multilayer material, whereby the diffusion transfer silver deposition substantially takes place at this outer free surface.
  • British patent application 26,580/ 67 there may be referred to British patent application 26,580/ 67.
  • the development nuclei instead of being present in the said colloid layer on top of the silver halide emulsion layer, may also be provided between the light-sensitive emulsion layer and the said colloid layer. After the diffusion transfer image formation the said colloid layer is transferred to another sheet material and carries the diffusion transfer silver image on its free surface. In this way a material is provided which is suitable for the preparation of a planographic printing plate according to the method of the present invention.
  • a multilayer material comprising a light-sensitive silver halide emulsion layer on top of an image-receiving layer containing development nuclei.
  • a multilayer material is described i.a. in British patent specifications 654,631; 868,241; 868,243; 1,006,292 and 1,027,742.
  • the light-sensitive emulsion layer may be removed by detaching in an aqueous rinsing bath as a coherent membrane or in flakes by dissolving or by stripping off either or not by means of an auxiliary sheet, whereupon the colloid image-receiving layer with the silver pattern formed on its surface becomes visible.
  • the development nuclei are very often substantially or completely concentrated at the imagereceiving side of that layer. This can be very advantageously effected by adding the development nuclei to the processing liquid for carrying out the diffusion transfer image formation or to a separate liquid for wetting the image-receiving material just before the latter is brought in contact with the image-wise exposed lightsensitive material in the presence of the alkaline processing liquid for carrying through the silver complex diffusion transfer process.
  • a minor amount of a hydrophilic protective colloid is often added to the dispersion. This amount of colloid does not suflice to form a layer and in most cases is hardened at the hardening stage of the hydrophilic colloid layer or by diffusion of hardener from said layer.
  • the above is a non-limitative list of methods for the preparation of a suitable sheet material for preparing a planographic printing plate according to the method of the present invention.
  • the sheet materials used are generally of rather simple composition and comprise a suitable support such as a usual hydrophobic flexible film support or a paper sheet provided either directly or indirectly, e.g., by means of a suitable subbing layer, with a hydrophilic colloid outer layer having at its surface a pattern of finely divided silver particles. Often a silver halide emulsion layer is present between the colloid outer layer and the support and also antihalation dyes or pigments are provided.
  • Photographic methods especially the silver complex diffusion transfer process, if necessary combined with a chemical or physico-chemical after-treatment for intensifying the silver pattern at the surface of the outer colloid layer in or on which it has been produced, are particularly suitable.
  • hydrophilic colloid outer layer any hardenable hydrophilic colloid is suitable.
  • gelatin is favoured in this respect, other hardenable hydrophilic colloids such as polyvinylalcohol, casein, carboxymethylcellulose and sodium alginate can be used too, the nature of the hardener used being dependent on the type of hydrophilic colloid to be hardened.
  • Hardening of the hydrophilic colloid binder of the outer layer may occur before, during or after the treatment with the aqueous composition containing mercury(II) ions and must occur at least to such an extent that no substantial amount of colloid is transferred on printing neither to the rollers for applying water and ink to the printing plate nor to the material to be printed.
  • hardening i.e. insolubilizing in water and strengthening against mechanical damage must occur at least to such an extent that the material obtained can be used as planographic printing plate.
  • the said hardening mostly occurs before the treatment with mercury(II) ions.
  • the said hardening may occur by addition of generally known hardening agents for gelatin and similar colloids such as formaldehyde, glyoxal, muccochloric acid and chrome alum to the coating composition of the outer layer, at the surface of which the silver pattern will be produced, and/or to the coating composition of another layer, with which the said outer layer is in water permeable relationship whereby hardening of the said outer layer takes place by diffusion of hardener from said other layer to said outer layer.
  • a coating composition comprising development nuclei, either or not together with a minor amount of a hydrophilic colloid to keep the development nuclei in dispersion is applied on top of the said outer layer
  • the hardeners can also be incorporated into said coating composition.
  • Hardening of the hydrophilic colloid binder of the outer layer may also occur during the production of the silver pattern.
  • said hardening may occur by incorporating hardeners in at least one of the processing liquids and/or by incorporating latent hardeners, as already referred to above, into the photographic material to be hardened. These latent hardeners are active only in a well defined pH-range, mostly the pH range of the usual developing liquids.
  • hardening of the outer hydrophilic colloid layer can also occur after the production of the silver pattern namely by treatment with a liquid composition.
  • This liquid composition may be an aqueous treating composition applied before the treatment with mercury(II) ions, the aqueous treating composition containing mercury(II) ions itself or an aqueous treating composition applied after the treatment with mercury (II) ions.
  • hydrophilic colloid binders e.g. carboxymethylcellulose, gum arabic, sodium alginate, propylene glycol ester of alginic acid, hydroxyethyl starch, dextrine, hydroxyethylcellulose, polyvinylpyrrolidone, polystyrene sulphonic acid and polyvinyl alcohol in the outer hydrophilic colloid layer carrying at its surface the pattern of silver particles often improves the hydrophilic ink-repellent properties of the non-printing areas of the printing plate finally obtained.
  • hydrophilic colloid binders e.g. carboxymethylcellulose, gum arabic, sodium alginate, propylene glycol ester of alginic acid, hydroxyethyl starch, dextrine, hydroxyethylcellulose, polyvinylpyrrolidone, polystyrene sulphonic acid and polyvinyl alcohol
  • hydrophilic softening agents e.g., sorbitol, glycerol, trihydroxyethyl, ether of glycerol, turkish red oil and certain wetting agents, incorporated in at least one hydrophilic colloid layer of the sheet material carrying the silver image at its surface will improve the hydrophilic properties of the non-printing areas.
  • the hydrophilic colloid outer layer may advantageously comprise a considerable amount of pigment particles that will prevent the so-called scumming (i.e. ink-acceptance that arises in the non-printing areas of the printing plate after a certain number of copies has been printed).
  • scumming i.e. ink-acceptance that arises in the non-printing areas of the printing plate after a certain number of copies has been printed.
  • the usual inorganic pigments e.g. barium sulphate, titanium dioxide, china clay and silica applied from a colloidal solution have proved to be particularly suitable for this purpose.
  • the pigment particles are generally homogeneously applied in such an amount that about 5-20 g. thereof are present per sq. m. of the hydrophilic colloid outer layer.
  • a similar anti-scumming effect may also be obtained by adding colloidal silica to the fountain solution used during the printing process.
  • the sheet material comprising an outer hydrophilic colloid layer having at its surface a pattern of finely divided silver particles is treated with an aqueous composition containing an operative amount of mercury(II) ions.
  • this treatment starts the said outer colloid layer may be in dry as well as in wet condition.
  • Said treatment can occur in different Ways, e.g. by spraying with, rubbing with or dipping into the aqueous composition containing mercury(II) ions.
  • this treatment does not last long, on the average not longer than about 30 seconds and can be accelerated by raising the temperature of the aqueous composition and/or by increasing the concentration of the mercury(II) ions in the aqueous composition.
  • the reaction mechanism according to which the pattern of finely divided silver particles, at the surface of the hydrophilic colloid outer layer, is converted into a hydrophobic i.e. ink-receptive pattern by the treatment with the aqueous composition containing mercury(II) ions cannot be explained with certainty. It is assumed that the silver particles are oxidized and form water-insoluble silver salts whereas the mercury (II) ions are reduced to mercury(I) ions, which probably form water-insoluble mercury(I) salts, and even to metallic mercury. It is possible that the silver salts formed by this redox-reaction are at least partly converted again into photolytic silver having a yellow colour and it is also possible that an amalgamation occurs between metallic mercury particles and the silver particles originally present or photolytically formed afterwards.
  • the aqueous composition containing mercury(II) ions is generally an aqueous solution of at least one more or less water-soluble mercury(II) salt or other mercury(II) compound that releases mercury(II) ions in an aqueous medium such as some mercury(II) complexes.
  • the mercury(II) salt and/ or the other mercury(II) compounds is (are) incorporated into the aqueous treating composition in such concentration that an operative amount of mercury(II) ions is present. This means, an amount of mercury(II) ions that makes the aqueous composition suitable for the purpose intended i.e. for converting the silver pattern into a hydrophobic pattern.
  • mercury(II) ions comprised between about 5 and about g. per litre of aqueous composition.
  • Particularly suitable water-soluble mercury(II) salts are: mercury(II) chloride, mercury(II) thiocyanate, mercury( II) nitrate, mercury(II) acetate, mercury(II) bromide and mercury- (II) lactate.
  • the planographic printing plate is theoretically ready for printing and can be braced on the offset machine.
  • a further improvement of the hydrophobic i.e. ink-receptive character of the printing parts and/ or a mechanical strengthening of these parts by means of a hydrophobic lacquer is not necessary and may be omitted.
  • What is advantageous in most cases is to improve the hydrophilic character of the non-printing areas of the plate.
  • This can be done by incorporating usual compounds such as carboxymethyl cellulose and arabic gum, colloidal silica and/or some wetting agents such as sodium lauryl sulphate into the aqueous composition containing mercury(II) ions in concentrations ranging preferably from about 5 to about 200 g. per litre.
  • the compounds for improving the hydrophilic and thus ink-repelling properties of the non-printing areas of the planographic printing plate can also be provided by a separate after-treatrnent with an aqueous composition containing these compounds or just be added to the fountain solution used during the printing process.
  • This neutralization can occur in a physical way e.g. by covering the planographic printing plate with a protective membrane.
  • an emulsifiable oil such as Turkish Red Oil can be added to the aqueous composition containing mercury(II) ions or said oil can be applied in a previous or subsequent treatment of the printing plate.
  • the neutralization of the excess of mercury(II) ions can also occur chemically e.g. by means of compounds forming with mercury(II) ions a mercury compound the ion product of which is very low.
  • examples of such compounds are: chelating compounds such as polyaminopolycarboxylic acids ethylene-diamine tetraacetic acid trisodium salt, N (2 hydroxyethyl)-N,N,N'-ethylenediamine triacetie acid and similar compounds disclosed in British patent specification 952,162 and polyamines such as triethylene tetraamine and 2,2,2"-triarnino-triethylamine; compounds comprising a mercapto group such as l-phenyl 5 mercapto-tetrazole, 5-methyl-3- mercapto 1,2,4 triazole, Z-mercapto-benzthiazole, 2- mercapto-benzimidazole, thiosalicylic acid and aliphatic mercaptans.
  • the chemical neutralization can also be effected by means of compounds having a labile sulphur atom forming mercury(II) sulphide with mercury(II) ions, e.g. thioacetamide, thiosulphates and thiourea.
  • These compounds for chemically neutralizing the excess of mercury (II) ions may be applied to the planographic printing plate from a solution in a suitable solvent, after the treatment of said plate with the composition containing mercury(II) ions.
  • EXAMPLE 1 To a paper support of 135 g. per sq. m. a common high sensitive, negative gelatino silver chlorobromide emulsion layer, hardened by means of formaldehyde, is applied in such a way that an amount of silver halide equivalent to 1 g. of silver nitrate is present per sq. In. After drying of the gelatino silver halide emulsion layer, said layer is overcoated pro rata of g. sq. m. with the following composition:
  • Aqueous colloidal nickel sulphide dispersion comprising per 100 cc. 0.2 g. of nickel sulphide and 10 g. of gelatin 100 The material obtained is exposed to an original and treated for sec. in the following processing composition:
  • the material is then rubbed in with a plug of wadding saturated with the following solution, until the dark positive diffusion transfer silver image produced at the surface of the material has disappeared:
  • EXAMPLE 2 To a paper support of 250 g. per sq. m. a common high sensitive negative gelatino silver chlorobromide emulsion layer, hardened by means of formaldehyde and comprising hydroquinone and 1 phenyl 3 pyrazolidinone, is applied in such a way that per sq. m. are present: an amount of silver halide equivalent to 1 g. of silver nitrate, 0.5 g. of hydroquinone and 0.25 g. of l-phenyl- 3-pyrazolidinone.
  • the light-sensitive material obtained is image-wise exposed and then dipped for 10 sec. in the following processing liquid:
  • a positive planographic printing plate is then obtained by simply rubbing the material, until complete disappearance of the dark diffusion transfer silver image, with a plug of wadding saturated with the following solution:
  • Aqueous mercury (II) chloride solution comprising per 100 cc. 5 g. of mercury (II) salt-100 cc. 35% aqueous silicone emulsion marketed under the trade name Rhodorsil Emulsion E by Usines Chimiques Rhone-Poulenc Paris, Franee25 cc.
  • the material obtained after this treatment is ready for use as planographic printing plate with positive image values in respect of the original.
  • EXAMPLE 4 On a subbed cellulose triacetate film support having a thickness of 100 a layer is coated pro rata of 20 sq. m. per litre from the following composition:
  • this first layer is overcoated pro rata of 30 sq. m. per litre with the following composition:
  • the layer is dried whereupon a common gelatino silver chloride emulsion layer, hardened by means of formaldehyde, is applied in such a Way that an amount of silver halide equivalent to 1 g. of silver nitrate is present per
  • the multilayer material thus obtained is image-wise exposed and then treated for 30 sec. in the processing composition of Example 1.
  • the emulsion layer is stripped off as a coherent membrane whereupon the underlying image-receiving layer carrying at its surface the diffusion transfer silver image is rubbed with a plug of wadding impregnated with the following solution to produce the planographic printing plate:
  • EXAMPLE 5 To a paper support of 135 g. per sq. m. a common highsensitive gelatino silver chlorobromide emulsion layer, hardened by means of formaldehyde, is applied in such a way that an amount of silver halide equivalent to 1 g. of silver nitrate is present per sq. m.
  • the light-sensitive material obtained is image-wise exposed and then developed in a processing composition as described in Example 1.
  • the material is physically developed for 60 sec. by dipping into a bath consisting of a mixture of 5 parts of solution B below and 1 part of solution A below.
  • a light-sensitive material is prepared as follows:
  • Hydroxyethyl starch having a substitution degree of 0.27 of hydroxyethyl groups-40 g.
  • An image-receiving material is prepared by coating a paper support of 135 g. per sq. in. pro mm of g. per sq. m. with the following composition:
  • composition pro rata 22 g. per sq. m.:
  • the image-receiving material showing the diffusion transfer silver image at its surface is then treated with the following composition to produce a planographic printing plate ready for printing:
  • Aqueous mercury(II) chloride solution comprising per 100 cc. 5 g. of mercury(I-I) chloride 40 5% aqueous solution of Adjupon LL (trade name of Adjubel N.V., Lembeek (Halle), Belgium for a white powder consisting of 35-40% of active sodium lauryl sulphate) 50 Turkish Red Oil 10 What we claim is:
  • Method for the preparation of a planographic printing plate which method comprises treating a sheet material carrying an outer hydrophilic colloid layer having a pattern of finely divided silver particles disposed essentially at the surface of said layer, with an aqueous composition containing mercuryfll) ions in a concentration of about 5-50 gms. per liter, whereby the pattern of silver particles at the surface of the said outer hydrophilic colloid is rendered receptive to a hydrophobic ink, the said outer hydrophilic colloid layer being sufiiciently hardened prior to printing therewith that no substantial amount of colloid is transferred from said layer during such printing.
  • Method according to claim 1 characterized in that the pattern of finely divided silver particles is produced photographically at the layer surface using the silver complex diffusion transfer process wherein complexed silver halide diffuses from a separate exposed light-sensitive material onto the outer colloid layer of said sheet material in contact therewith, said outer colloid layer containing a substance for promoting deposition of metallic silver particles from the diffusing complexed silver halide.
  • Method according to claim 1 characterized in that the pattern of finely divided silver particles is produced photographically using the silver complex diffusion transfer process wherein said sheet material carries both said colloid layer and a silver halide emulsion layer for supplying complexed silver halide for diffusion during said transfer process, said colloid layer being supplied with a substance for promoting deposition of metallic silver particles from said diffusing complexed silver halide.
  • Method according to claim 3 characterized in that at least one of the light-sensitive material and the imagereceiving material contains at least part of the substances an aqueous solution of at least one mercury(II) salt.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Photosensitive Polymer And Photoresist Processing (AREA)
  • Printing Plates And Materials Therefor (AREA)
US697028A 1967-01-11 1968-01-11 Planographic printing plate from mercuric ion on silver diffusion transferred image Expired - Lifetime US3582328A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0488/67A GB1213311A (en) 1967-01-11 1967-01-11 Preparation of planographic printing plates

Publications (1)

Publication Number Publication Date
US3582328A true US3582328A (en) 1971-06-01

Family

ID=9722890

Family Applications (1)

Application Number Title Priority Date Filing Date
US697028A Expired - Lifetime US3582328A (en) 1967-01-11 1968-01-11 Planographic printing plate from mercuric ion on silver diffusion transferred image

Country Status (5)

Country Link
US (1) US3582328A (zh)
BE (1) BE709193A (zh)
DE (1) DE1622331A1 (zh)
GB (1) GB1213311A (zh)
NL (1) NL6800431A (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3971660A (en) * 1974-04-04 1976-07-27 Eastman Kodak Company Lithographic printing plate comprising hydrophilic layer of polyvinylacetate crosslinked with tetraethylorthosilicate

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4361635A (en) * 1981-06-19 1982-11-30 Minnesota Mining And Manufacturing Company Photolithographic element containing a silver-receptive polyaldehyde-containing receiving layer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3971660A (en) * 1974-04-04 1976-07-27 Eastman Kodak Company Lithographic printing plate comprising hydrophilic layer of polyvinylacetate crosslinked with tetraethylorthosilicate

Also Published As

Publication number Publication date
GB1213311A (en) 1970-11-25
BE709193A (zh) 1968-07-11
NL6800431A (zh) 1968-03-25
DE1622331A1 (de) 1970-10-29

Similar Documents

Publication Publication Date Title
US3721559A (en) Photographic material for the preparation of printing plates
US2596756A (en) Photomechanical copy method
US5401611A (en) Heat mode recording material and method for making a lithographic plate
US2740717A (en) Photographic transfer process
US3278958A (en) Method of imaging a photolithographic plate and elements for use in the preparation of same
US3220837A (en) Diffusion transfer to stratum of a silver image inked and used in printing
US2774667A (en) Photographic silver halide transfer process
US3607270A (en) Unitary, permanently composite, photographic light-sensitive sheet material for use in the silver complex diffusion transfer process for producing images
US3511656A (en) Single sheet lithographic dtr master and method of use
US3676125A (en) Method of producing planographic printing plates
US4425420A (en) Production of a planographic printing plate through the silver complex diffusion transfer process
US3582328A (en) Planographic printing plate from mercuric ion on silver diffusion transferred image
JPH0720633A (ja) 像形成性要素及び銀塩拡散転写法により平版印刷版を製造する方法
JP3382369B2 (ja) 銀塩拡散転写法により平版印刷版を製造するための像形成材料及び方法
US3063837A (en) Photographic diffusion transfer process for planographic printing
US3067033A (en) Production of transfer images by the silver salt diffusion process
US3385701A (en) Lithographic offset master and method
JP3322475B2 (ja) 銀塩拡散転写法により平版印刷オフセット印刷版を製造するための処理溶液
US3989521A (en) Production of planographic printing patterns on aluminum sheets using solutions containing dicarboxylic acid compounds
JP2864004B2 (ja) 銀塩拡散転写法による改良された印刷版を作るための像形成材料
US3335007A (en) Silver halide diffusion transfer process
US2698238A (en) Photographic product and process
US3335005A (en) Silver complex diffusion transfer process
JP3382368B2 (ja) 銀塩拡散転写法による平版印刷版の製造法
US3764323A (en) Method of forming lithographic printing plate