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US3186842A - Diffusion transfer process for the manufacture of priniting plates - Google Patents

Diffusion transfer process for the manufacture of priniting plates Download PDF

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Publication number
US3186842A
US3186842A US846257A US84625759A US3186842A US 3186842 A US3186842 A US 3186842A US 846257 A US846257 A US 846257A US 84625759 A US84625759 A US 84625759A US 3186842 A US3186842 A US 3186842A
Authority
US
United States
Prior art keywords
silver
silver halide
metal plate
emulsion layer
image
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
US846257A
Other languages
English (en)
Inventor
Haes Louis Maria De
Cassiers Paul Maria
Rott Andre
Wagemans Albert Petrus
Willems Jozef Frans
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.)
Gevaert Photo Producten NV
Original Assignee
Gevaert Photo Producten 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 Gevaert Photo Producten NV filed Critical Gevaert Photo Producten NV
Application granted granted Critical
Publication of US3186842A publication Critical patent/US3186842A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C8/00—Diffusion transfer processes or agents therefor; Photosensitive materials for such processes
    • G03C8/02—Photosensitive materials characterised by the image-forming section
    • G03C8/04—Photosensitive materials characterised by the image-forming section the substances transferred by diffusion consisting of inorganic or organo-metallic compounds derived from photosensitive noble metals
    • G03C8/06—Silver salt diffusion transfer
    • 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
    • G03F7/07—Silver salts used for diffusion transfer

Definitions

  • the present invention relates to a new method for producing printing plates according to the silver halide diffusion transfer process. More particularly, the present invention relates to improvements in the manufacture of printing plates for letter-press printing, offset or lithoprinting, and photogravure printing by using a silver halide diffusion transfer process.
  • United States Patent No. 2,352,014 describes a process of photographic image transfer which comprises contacting a photographic silver halide layer, containing a developing solution and a developed photographic image in the presence of a silver halide solvent and a fogging agent, with a receiving material which is insensitive to light.
  • fogging agents known to be substances capable of promoting the reduction of silver halide not exposed to light, will improve and accelerate the transfer process.
  • These fogging agents belong to the class of products which act as reduction or crystallization nuclei for silver halide, such as colloidal silver, colloidal sulphur and metal sulphides, such as nickel sulphide, cobalt sulphide, etc., and usually are incorporated into the receiving material either during the manufacture of the latter or by impregnation of the finished receiving material.
  • these fogging agents may belong to the class of substances which are not such reduction or crystallization nuclei themselves but may form such nuclei by interacton with the diffused silver halides either by reduction or by the formation of rather insoluble compounds.
  • the silver halide difiusion transfer process has also been used in the production of lithographic plates, wherein the receiving material is a suitable metallic sheet coated with a layer containing substances which act as reduction or crystallization nuclei, such as for instance silver sulphide, or form such nuclei by interacting with the diffusing silver salt complexes such as an alkali sulphide.
  • the image obtained on the metallic sheet by application of the silver halide diffusion transfer process may further be treated in known manner in order toenhance the oleophilic and the hydrophilic characteristics of the image parts for producing a satisfactory printing plate.
  • the nuclei heretofore used in preparing lithographic plates by the dilfusion transfer processes are omitted, and, instead, the metallic surface itself is allowed to take part actively in the reduction of the diffusing silver salts, and the silver images thus obtained are thereafter subjected to a subsequent lithographic after-treatment which increases the hydrophility of the metal support and the oleophility of the silver precipitate.
  • the metallic support is made of a metal or an alloy of metals which is higher than silver in the electrolytic series, and therefore is capable of exerting a strong reduction power towards silver ions.
  • Metals which are commonly used as lithographic plates and are higher than silver in the electrolytic series include aluminum, zinc, magnesium, copper, lead and iron, or the alloys mainly consisting of one of these metals, such as, for example, stainless steel.
  • an aluminum sheet and an exposed photographic material are passed through a developing apparatus normally used for diffusion transfer and filled with a developing solution which besides the usual ingredients for development of the exposed silver halide also contains a solvent for the undeveloped silver halide.
  • a developing solution which besides the usual ingredients for development of the exposed silver halide also contains a solvent for the undeveloped silver halide.
  • the lapse of time between wetting the aluminum surface and its contact with the developing negative should be limited in order to obtain a good quality silver precipitate on the aluminum surface. It is evident that these objects can be achieved mechanically by arranging and suitably coordinating the processing time and the contact time of the negative material with the aluminum surface.
  • the light-sensitive material involved comprises a support and an emulsion layer. Additional layers, such as an intermediate layer, a filter layer and/ or an antistress layer, may also be present.
  • the support may be any of the common materials heretofore used in diffusion transfer processes, however, it is preferred to use a support that is flexible, thin and dimensionally stable in order to avoid wrinkling when the support is closely pressed together onto the aluminum sheet. Suitable support materials are, among others,
  • the emulsion layer may be any light-sensitive silver halide emulsion,'either negative or direct positive, which gives sulficiently rapid development of the image wise exposed silver halide layer, suflicient complex formation of the non-developed silver halide and a satisfactory gradation necessary for graphic purposes.
  • silver chloride emulsions which contain some amounts of bromide and iodide or other ingredients, necessary for obtaining the desired emulsion characteristics.
  • the hardening degree of the emulsion layer is important in obtaining good results and should be sufiicient to obtain good and uniform adherence of the light sensitive material to the aluminum sheet during diffusion-transfer. This can be achieved by adding to the emulsion, to an intermediate layer or to an auxiliary layer, hardening agents and/ or agents which prevent hardening, according to the desired hardening degree of the material.
  • the emulsion may contain other ingredients such as chemical and optical sensitizers, stabilizers, antifogging agents, developers and/ or development acceleraors, wetting agents, light-screening substances, etc.
  • the light-sensitive paper can be exposed in Contact with the original by either the reflex method or the transmitted light method. It is also possible to expose the photographic paper by optical methods employing the' usual copying cameras. More details of these methods are published in information folders for document copyists such as the data-sheet JC/ -1 published November 1954 and June 1959, and the Gevacopy booklet: Rapid Ultra-rapid Gevacopy, published November 1958, both edited by Gevaert Photo-Producten N.V., Mortsel, Belgium.
  • the developing bath used for carrying out the diffusion transfer process of the present invention contains the necessary ingredients for the development of the exposed (or, if a direct positive emulsion is used, for the fogged, non-exposed) silver halide and a solvent for the non developed silver halide.
  • the developing bath may further contain other ingredients, including those generally em ployed in the art, such as substances for preventing aerial oxidation of the developendevelopment accelerators, alkali etc. obtaining special results.
  • M H, NH Na, K or amine
  • R an alkyl group, an aryl group, anaralkyl group,- an isocyclic'or heterocyclic nucleus, these groups being either substituted or not by halogen, hydrox'yl, ethermercapto, T"-
  • Typical examples of such sequestering agents are:
  • the plate bearing the adhering silver image is made ready for printing by rubbing it with a suitable lithographic preparation.
  • Quaternary ammonium compounds such as cetyltrimethyl-ammonium bromide, benzyltrimethyl ammonium bromide and dodecyl trimethyl ammonium chloride,
  • the lithographic plate Since the non-printing parts of the aluminum plate oxidize quite rapidly in the air and become less hydrophilic, the lithographic plate is treated as soon as possible after the formation of the silver image with a lithographic preparation containing a polymeric substance such as gum arabic or carboxymethyl cellulose which leaves a thin hydrophilic layer on the blank metallic plate rendering the non-printing parts ink-repellent.
  • a lithographic preparation containing a polymeric substance such as gum arabic or carboxymethyl cellulose which leaves a thin hydrophilic layer on the blank metallic plate rendering the non-printing parts ink-repellent.
  • the ink-repellent characteristics may be further increased by addition of phosphoric acid and/ or its salts.
  • the printing plate bearing the silver image is treated with a lithographic preparation containing at least one compound enhancing the ink and/ or lacquer receptivity of the silver image, and containing further at least one compound preventing the oxidation of the aluminum and/ or at least one compound increasing the ink-repellent characteristics of the plate metal.
  • Example 1 A light-sensitive negative paper obtained by coating 21 silver chloride emulsion layer on a baryta-coated paper base of 135 g. per sq. m. is exposed to an image according to the reflex method.
  • the exposed negative and an aluminum sheet consisting of 99.5% of aluminum and 0.5% of magnesium and silica, the surface of which was brushed to grain depths of 2 to 4 microns, are passed through an apparatus ordinarily used for the diffusion transfer process.
  • This apparatus contains an aqueous developer solution of the following composition:
  • the negative and the aluminum plate are brought into contact between rubber rollers.
  • the paper sheet carrying the emulsion layer is separated from the aluminum sheet, leaving a silver image on the aluminum sheet adhering to the surface of said sheet.
  • the plate bearing the image is further rubbed for about 30 seconds with a cloth, soaked with a lithographic preparation of the following composition:
  • the zinc sheet is then rubbed with a greasy lithographic ink, powdered with finely divided asphaltum powder and heated at 130 C.
  • the parts of the plate which have not to be etched are then covered with asphaltum lacquer.
  • the etching of the zinc sheet is then carried out according to methods known to those skilled in the art of preparing typographic printing plates.
  • the lithographic solution also contains a hydrophilic organic polymeric compound, forming a thin hydrophilic layer on the blank parts of the metal plate where no silver image has been formed with said hydrophilic organic polymeric compound and thereby rendering said blank parts ink-repellent.
  • hydrophilic organic polymeric compound is selected from the group consisting of carboxymethyl cellulose and gum arabic.
  • the lithographic solution also contains a compound selected from the group consisting of phosphoric acid and salts of phosphoric acid, said compound rendering the blank parts of the metal plate where no silver image has been formed ink-repellent.
  • a photographic material containing a light sensitive silver halide emulsion layer having exposed and nonexposed areas with a silver halide developing solution containing a sequestering agent, wherein said sequestering agent is a compound selected from the group consisting of amino polycarboxylic acids and Water soluble salts thereof, contacting the side of said photographic material bearing the emulsion layer with the surface of a metal plate in the presence of a silver halide solvent, said surface of said metal plate being substantially oxide free and composed of a metal higher than silver in the electrolytic series, whereby the undeveloped silver halide in the emulsion layer at least partially dissolves and diffuses from said emulsion layer to the surface of said metal plate and is reduced by said plate to deposit a silver image on said surface, and treating said surface of said metal plate bearing said silver image with a lithographic solution to increase the oleophility
  • the lithographic solution also contains a hydrophilic organic polymeric compound, forming a thin hydrophilic layer of said hydrophilic organic polymeric compound on the blank parts of the metal plate Where no silver image has been formed and thereby rendering said blank parts ink-repellent.
  • a photographic material containing a light sensitive silver halide emulsion layer having exposed and non exposed areas with a silver halide developing solution containing a sequestering agent and asilver halide solvent, wherein said sequestering agent is a compound selected from the group consisting of amino polycarboxylic acids and Water soluble salts thereof, contacting the side of said photographic material bearing the emulsion layer with a substantially oxide free surface of an aluminum plate, said surface of said aluminum plate having been treated prior to said contacting with said silver halide developing solution, whereby the undeveloped silver halide corresponding to the non-exposed areas of the emulsion layer at least partially dissolves and diffuses from said emulsion layer to the surface of said aluminum plate and is reduced by said plate to deposit a silver image on said surface, and treating said surface of said aluminum plate bearing said silver image with a lithographic solution ,

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Photosensitive Polymer And Photoresist Processing (AREA)
  • Printing Plates And Materials Therefor (AREA)
US846257A 1957-10-25 1959-10-14 Diffusion transfer process for the manufacture of priniting plates Expired - Lifetime US3186842A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB33431/57A GB913591A (en) 1957-10-25 1957-10-25 Lithographic printing plates
GB1932/59A GB946538A (en) 1957-10-25 1959-01-19 Improvements in or relating to photo-mechanical printing processes
BE2041833 1962-07-18

Publications (1)

Publication Number Publication Date
US3186842A true US3186842A (en) 1965-06-01

Family

ID=27159583

Family Applications (3)

Application Number Title Priority Date Filing Date
US846257A Expired - Lifetime US3186842A (en) 1957-10-25 1959-10-14 Diffusion transfer process for the manufacture of priniting plates
US846256A Expired - Lifetime US3300306A (en) 1957-10-25 1959-10-14 Process for the manufacture of printing plates
US660591A Expired - Lifetime US3567443A (en) 1957-10-25 1967-08-15 Diffusion transfer production of printing plates with lioh as alkalizing agent

Family Applications After (2)

Application Number Title Priority Date Filing Date
US846256A Expired - Lifetime US3300306A (en) 1957-10-25 1959-10-14 Process for the manufacture of printing plates
US660591A Expired - Lifetime US3567443A (en) 1957-10-25 1967-08-15 Diffusion transfer production of printing plates with lioh as alkalizing agent

Country Status (8)

Country Link
US (3) US3186842A (de)
BE (2) BE620350A (de)
CH (2) CH386251A (de)
DE (3) DE1177933B (de)
FR (1) FR1213747A (de)
GB (3) GB913591A (de)
NL (4) NL125604C (de)
SE (1) SE315500B (de)

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3260598A (en) * 1961-05-29 1966-07-12 Eastman Kodak Co Photographic element-developer system
US3278958A (en) * 1955-03-31 1966-10-18 Dick Co Ab Method of imaging a photolithographic plate and elements for use in the preparation of same
US3300306A (en) * 1957-10-25 1967-01-24 Gevaert Photo Prod Nv Process for the manufacture of printing plates
US3383211A (en) * 1963-04-26 1968-05-14 Gevaert Photo Prod Nv Lithographic printing plates
US3396018A (en) * 1963-05-17 1968-08-06 Eastman Kodak Co Diffusion transfer system
US3424580A (en) * 1965-09-07 1969-01-28 Horizons Inc Photographic process for the direct production of positive images on metal
US3451814A (en) * 1963-07-25 1969-06-24 Polaroid Corp Novel photographic product and process
US3490906A (en) * 1964-10-06 1970-01-20 Du Pont Process for preparing printing plates and developer compositions therefor
US3628978A (en) * 1968-09-23 1971-12-21 Eastman Kodak Co Method of nucleating aluminum
US3854948A (en) * 1971-05-15 1974-12-17 Minnesota Mining & Mfg New development composition for radiographic film
US3989521A (en) * 1974-02-08 1976-11-02 Agfa-Gevaert N.V. Production of planographic printing patterns on aluminum sheets using solutions containing dicarboxylic acid compounds
US4018605A (en) * 1975-04-21 1977-04-19 Minnesota Mining And Manufacturing Company Metal lithographic plate made imageable by diffusion transfer by treatment with Group IV-B metal fluoride
US4038077A (en) * 1974-04-04 1977-07-26 Polaroid Corporation Process comprising diffusion transfer silver image removal
US4062682A (en) * 1974-11-12 1977-12-13 Agfa-Gevaert N.V. Fixer compositions used in planographic printing containing onium compounds
US4425420A (en) 1981-02-25 1984-01-10 Agfa-Gevaert N.V. Production of a planographic printing plate through the silver complex diffusion transfer process
EP0330215A2 (de) * 1988-02-25 1989-08-30 Mitsubishi Paper Mills, Ltd. Verfahren zur Herstellung von Flachdruckplatten
US5053319A (en) * 1988-09-28 1991-10-01 Eastman Kodak Company Aqueous solutions of oleophilic compounds
US5340691A (en) * 1992-09-30 1994-08-23 Agfa-Gevaert, N.V. Method for making a lithographic printing plate according to the silver salt diffusion transfer process
US5399457A (en) * 1993-10-15 1995-03-21 Minnesota Mining And Manufacturing Company Process for reducing sludge in diffusion transfer printing plates
US5405730A (en) * 1993-08-05 1995-04-11 Agfa-Gevaert, N.V. Imaging element and method for making aluminum lithographic printing plates according to the silver salt diffusion transfer process

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL256257A (de) * 1959-09-26
DE1206596B (de) * 1963-07-19 1965-12-09 Ver Leichtmetallwerke Gmbh Verwendung einer Aluminiumlegierung
US3525567A (en) * 1966-10-19 1970-08-25 Gaf Corp Clearing compositions for rapid processing of photographic film
GB1209050A (en) * 1967-12-27 1970-10-14 Agfa Gevaert Nv Photographic silver halide processing liquids
GB1281698A (en) * 1968-07-15 1972-07-12 Itek Corp Metallic photographic products
JPS5542751B2 (de) * 1972-04-05 1980-11-01
JPH0757204B2 (ja) * 1986-07-04 1995-06-21 ワイケイケイ株式会社 停止装置付きスライダーを有するスライドファスナー
JPH0318846A (ja) * 1989-06-16 1991-01-28 Mitsubishi Paper Mills Ltd 拡散転写用感光材料
JPH0318845A (ja) * 1989-06-16 1991-01-28 Mitsubishi Paper Mills Ltd 拡散転写用感光材料
US5272041A (en) * 1990-10-19 1993-12-21 Agfa-Gevaert, N.V. Negative type lithographic printing plate
DE102014220872A1 (de) * 2014-10-15 2016-04-21 Christof Diener Ölanziehendes Lager mit oberflächenmodifiziertem Teil aus nichtrostendem Wälzlagerstahl

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL59365C (de) * 1939-11-02
US1742710A (en) * 1928-03-29 1930-01-07 Henry L Krebs Process of transferring subjects to metal surfaces
GB440736A (en) * 1934-07-05 1936-01-06 Kevin William Caton Webb Improvements relating to the production of photo-mechanical printing surfaces
US2352014A (en) * 1941-07-21 1944-06-20 Rott Andre Photomechanical printing process and printing material for carrying out the same
GB648897A (en) * 1946-09-09 1951-01-17 Gevaert Photo Prod Nv Improvements in and relating to the production of planographic printing plates
US2656273A (en) * 1952-02-12 1953-10-20 Eastman Kodak Co Photographic developers containing diamino-propanol tetracetic acid
US2823122A (en) * 1951-06-30 1958-02-11 Polaroid Corp Photographic silver halide transfer process and the print-receiving products useful in connection therewith
BE565696A (de) * 1955-03-31 1958-03-31
DE1064343B (de) * 1957-04-26 1959-08-27 Agfa Ag Verfahren zur Verbesserung der Haftung fetter Druckfarben auf photographischen Silberbildern

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE421930A (de) * 1936-06-25
US2698245A (en) * 1946-04-13 1954-12-28 Polaroid Corp Photographic product and process for making a positive transfer image
US2662822A (en) * 1949-04-21 1953-12-15 Polaroid Corp Photographic transfer processes and compositions for the practice of said processes
BE530033A (de) * 1953-07-01
US2839405A (en) * 1955-03-08 1958-06-17 Eastman Kodak Co Inorganic salt antifoggants for photographic emulsions
US2992102A (en) * 1955-03-29 1961-07-11 Polaroid Corp Photographic processes and products
BE556753A (de) * 1956-04-18
BE557693A (de) * 1956-05-23
BE572336A (de) * 1957-10-25
DE1070029B (de) * 1958-03-31 1959-11-26
BE584391A (de) * 1958-11-07

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1742710A (en) * 1928-03-29 1930-01-07 Henry L Krebs Process of transferring subjects to metal surfaces
GB440736A (en) * 1934-07-05 1936-01-06 Kevin William Caton Webb Improvements relating to the production of photo-mechanical printing surfaces
NL59365C (de) * 1939-11-02
US2352014A (en) * 1941-07-21 1944-06-20 Rott Andre Photomechanical printing process and printing material for carrying out the same
GB648897A (en) * 1946-09-09 1951-01-17 Gevaert Photo Prod Nv Improvements in and relating to the production of planographic printing plates
US2823122A (en) * 1951-06-30 1958-02-11 Polaroid Corp Photographic silver halide transfer process and the print-receiving products useful in connection therewith
US2656273A (en) * 1952-02-12 1953-10-20 Eastman Kodak Co Photographic developers containing diamino-propanol tetracetic acid
BE565696A (de) * 1955-03-31 1958-03-31
DE1064343B (de) * 1957-04-26 1959-08-27 Agfa Ag Verfahren zur Verbesserung der Haftung fetter Druckfarben auf photographischen Silberbildern
US3083097A (en) * 1957-04-26 1963-03-26 Agfa Ag Bleaching silver images in the formation of printing plates

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3278958A (en) * 1955-03-31 1966-10-18 Dick Co Ab Method of imaging a photolithographic plate and elements for use in the preparation of same
US3279366A (en) * 1955-03-31 1966-10-18 Dick Co Ab Aluminum photolithographic plate and method of imaging same
US3300306A (en) * 1957-10-25 1967-01-24 Gevaert Photo Prod Nv Process for the manufacture of printing plates
US3260598A (en) * 1961-05-29 1966-07-12 Eastman Kodak Co Photographic element-developer system
US3383211A (en) * 1963-04-26 1968-05-14 Gevaert Photo Prod Nv Lithographic printing plates
US3396018A (en) * 1963-05-17 1968-08-06 Eastman Kodak Co Diffusion transfer system
US3451814A (en) * 1963-07-25 1969-06-24 Polaroid Corp Novel photographic product and process
US3451815A (en) * 1963-07-25 1969-06-24 Polaroid Corp Novel photographic product and process
US3490906A (en) * 1964-10-06 1970-01-20 Du Pont Process for preparing printing plates and developer compositions therefor
US3424580A (en) * 1965-09-07 1969-01-28 Horizons Inc Photographic process for the direct production of positive images on metal
US3628978A (en) * 1968-09-23 1971-12-21 Eastman Kodak Co Method of nucleating aluminum
US3854948A (en) * 1971-05-15 1974-12-17 Minnesota Mining & Mfg New development composition for radiographic film
US3989521A (en) * 1974-02-08 1976-11-02 Agfa-Gevaert N.V. Production of planographic printing patterns on aluminum sheets using solutions containing dicarboxylic acid compounds
US4038077A (en) * 1974-04-04 1977-07-26 Polaroid Corporation Process comprising diffusion transfer silver image removal
US4062682A (en) * 1974-11-12 1977-12-13 Agfa-Gevaert N.V. Fixer compositions used in planographic printing containing onium compounds
US4018605A (en) * 1975-04-21 1977-04-19 Minnesota Mining And Manufacturing Company Metal lithographic plate made imageable by diffusion transfer by treatment with Group IV-B metal fluoride
US4425420A (en) 1981-02-25 1984-01-10 Agfa-Gevaert N.V. Production of a planographic printing plate through the silver complex diffusion transfer process
EP0330215A2 (de) * 1988-02-25 1989-08-30 Mitsubishi Paper Mills, Ltd. Verfahren zur Herstellung von Flachdruckplatten
EP0330215A3 (en) * 1988-02-25 1990-04-04 Mitsubishi Paper Mills, Ltd. Method for making lithographic printing plate
US5064745A (en) * 1988-02-25 1991-11-12 Mitsubishi Paper Mills, Ltd. Method for making lithographic printing plate
US5053319A (en) * 1988-09-28 1991-10-01 Eastman Kodak Company Aqueous solutions of oleophilic compounds
US5340691A (en) * 1992-09-30 1994-08-23 Agfa-Gevaert, N.V. Method for making a lithographic printing plate according to the silver salt diffusion transfer process
US5405730A (en) * 1993-08-05 1995-04-11 Agfa-Gevaert, N.V. Imaging element and method for making aluminum lithographic printing plates according to the silver salt diffusion transfer process
US5399457A (en) * 1993-10-15 1995-03-21 Minnesota Mining And Manufacturing Company Process for reducing sludge in diffusion transfer printing plates

Also Published As

Publication number Publication date
GB946538A (en) 1964-01-15
SE315500B (de) 1969-09-29
CH386251A (fr) 1964-12-31
DE1177933B (de) 1964-09-10
GB998447A (en) 1965-07-14
DE1185924B (de) 1965-01-21
CH406848A (fr) 1966-01-31
GB913591A (en) 1962-12-19
NL232607A (de)
DE1185925B (de) 1965-01-21
BE620350A (de)
NL125604C (de)
NL131667C (de)
BE572336A (de)
NL247505A (de)
US3567443A (en) 1971-03-02
FR1213747A (fr) 1960-04-04
US3300306A (en) 1967-01-24

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