US3764318A - Process for producing multicolour photographic images - Google Patents

Process for producing multicolour photographic images Download PDF

Info

Publication number
US3764318A
US3764318A US00149087A US3764318DA US3764318A US 3764318 A US3764318 A US 3764318A US 00149087 A US00149087 A US 00149087A US 3764318D A US3764318D A US 3764318DA US 3764318 A US3764318 A US 3764318A
Authority
US
United States
Prior art keywords
colour
image
receptor
positive
pigment
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
US00149087A
Other languages
English (en)
Inventor
U Laridon
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 US3764318A publication Critical patent/US3764318A/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
    • G03F3/00—Colour separation; Correction of tonal value
    • G03F3/10—Checking the colour or tonal value of separation negatives or positives

Definitions

  • An element comprising a temporary support and a lightsensitive layer, wherein a colour pigment is dispersed in a photo-solubilizable binder material, is treated as follows:
  • step (C) the new positive image is transferred to the receptor surface in register with the pigment image already present.
  • the temporary supports When the temporary supports are transparent the different coloured positive images formed on them can also be combined into register so as to form an overlay colour image of the original.
  • This invention relates to the production of photographic colour separation images which can serve as colour proofs.
  • This invention relates more particularly, but not exclusively to a process for producing halftone and line-work plural or multi-colour photographic images by forming partial images in register on a receptor surface, and to photographic materials used therefor.
  • register as used herein is intended to cover the correct relative placement of two or more single colour images, e.g., on a receptor, in such a way that a perfect, well defined plural or multi-colour image is formed. Registration can be accomplished visually, e.g., through the use of register marks on the separation colour transparencies or on such transparencies and a receptor, or by use of prepunched transparencies that are mounted on appropriate locating pins during exposure, and during transfer of the colour separation images to a receptor sheet if that transfer is effected.
  • a colour separation image useful for colour proofing is produced from a coloured original on an element comprising a support carrying a light-sensitive layer containing a colour pigment or dye in a photo-solubilizable binder material, by (A) exposing the photo-solubilizable layer to actinic light through a colour separation transparency which records the distribution in the original of the colour to be represented by said pigment or dye; and (B) dissolving away the exposed portions of such layer thereby leaving a coloured positive image of said colour separation transparency on the said support.
  • a plural or multi-colour image e.g., a coloured halftone or line-work image from a coloured original
  • the foregoing steps are repeated one or more times, using in the or each case a light-sensitive element with a light-sensitive layer of a different colour and a different colour separation transparency which records the distribution of the appertaining colour in the original, and the required plural or multicolour image is produced by combining the different coloured positive images of the different color separation transparencies.
  • the coloured colour separation images thus produced can be brought into register one on another so as to form an overlay colour image of the original.
  • the supports of the light-sensitive elements should preferably be transparent.
  • the pluralor multi-colour image can be produced by transferring the individual coloured positive separation images in register onto such surface.
  • the most preferred embodiments of the present invention make use of this transfer procedure.
  • the light-sensitive layers of the different light-sensitive elements, and the receptor surface are preferably constituted so that after transferring each coloured positive separation image to such surface, the photo-solubilizable binder material can be removed by a solvent while leaving a positive pigment or dye image on the receptor surface.
  • the present invention accordingly comprises a process for the production of a plural or multi-colour photographic image of an original wherein a colour separation image is produced on a light-sensitive element by a process comprising steps (A) and (B) as hereinbefore defined using a light-sensitive element in which the light-sensitive layer is borne by a temporary support, whereafter the following further steps are performed: (C) the positive image is transferred by adhesion to a receptor surface in the presence of a solvent or swelling agent for the photosolubilizable binder material; (D) the receptor is washed with a solvent for such binder material causing removal of such material while leaving the positive pigment or dye image on the receptor surface; and (E) a different coloured positive separation image or each of two or more different coloured positive separation images which has or have been formed from the original on different light-sensitive elements by performance of steps corresponding with (A) and (B) is likewise transferred to the receptor surface in register with the positive image or images already present, the or each said further transfer being followed
  • a light-sensitive element which contains, in lieu of a colour pigment or dye, a colour-forming compound which can be converted to a coloured compound by treatment with an appropriate reactant, e.g., after dissolving away the exposed portions of the light-sensitive layer or even after transfer of the positive (latent) image to a receptor.
  • the photosolubilizable binder material is formed by a mixture of an alkali-soluble polymer and a naphthoquinone diazide or a bisphenol modified to give a bis(o-quinone-diazide), such as described in the United Kingdom patent specifications 1,116,674 and 1,116,737 respectively.
  • Suitable alkali-soluble polymers are the copolymers of unsaturated carboxylic acids, such as acrylic acid, methacrylic acid, crotonic acid, maleic acid, fumaric acid, itaconic acid, and citraconic acid. If the copolymer comprises an unsaturated dicarboxylic acid, the half-esters and half-amides thereof may be used too. These unsaturated carboxylic acids are copolymerized with ethylenically unsaturated compounds that are substantially insoluble in alkaline medium and that are present in the copolymer in such a proportion that the copolymer itself remains soluble in alkaline medium.
  • Ethylenically unsaturated compounds that may be copolymerized include styrene and its derivatives, vinyl chloride, vinylidene chloride, vinyl esters such as vinyl acetate, acrylic acid esters, methacrylic acid esters, acrylonitrile, methacrylonitrile, etc.
  • Preferred alkali-soluble polymers are the socalled novolaks. According to British Standard 1755-1951 these are soluble, fusible, synthetic resins produced from a phenol and an aldehyde, having no reactive groups (i.e. methylol groups) in the molecule and therefore incapable of condensing with other novolak molecules on heating without the addition of hardening agents.
  • Suitable naphthoquinone-diazides are naphthoquinone- 1,2-diazide(2)4-sulphofluoride and naphthoquinone-1,2- diazide(2)-5-sulfofluoride.
  • 1,116,737 bis(o-quinone-diazides) deriving from the modification of bisphenols.
  • the most interesting of these bis (o-quinonediazides) are bis(6-diazo-2,4-cyclohexadien-4-yl-1-one)-phenylmethane,
  • the amount of alkali-soluble resin added to the lightsensitive quinone-diazides may vary within wide limits. Preferably, however, at least 4 parts by weight of alkalisoluble resin are present for every part by Weight of lightsensitive compound or compounds containing quinonediazide groups.
  • the photosolubilizable binder material is formed by a mixture of an alkalisoluble polymer and a compound containing a diazosulphone group such as described in the Belgian patent specification 740,597.
  • alkali-soluble polymers used are the same as those described above.
  • a large group of compounds containing a diazosulphone group is given in the Belgian patent specification 740,597. Most interesting are (p-acetamido-phenylsulphonyl) p-diethyl-aminophenyl) -diimide,
  • the amount of alkali-soluble resin added to the light-sensitive compound containing a diazosulphone group may vary within wide limits. Preferably, however, at least 4 parts by Weight of alkali-soluble resin are present for each part by Weight of diazosulphone.
  • the photosolubilizable binder material is formed from a mixture of an alkali-soluble resin, such as a novolak, and a compound containing a diazeomethane group corresponding to the formula:
  • R and R represent substituted or unsubstituted aliphatic, aromatic, or heterocyclic groups.
  • R is a dialkylaminophenyl group, e.g. (p tolylsulphonyl)-(p dimethylamino benzoyl)-diazo methane.
  • a photosolubilizable element is made by applying solutions of photosolubilizable mixtures of alkali-soluble polymer and of light-sensitive compounds as layers on temporary supports.
  • the light-sensitive coating composition may also compirse stabilizers, plasticizers, extenders, dyes and also minor amounts of additives increasing the lightsensitivity of the compositions.
  • the light-sensitive coating composition formed is applied to the temporary support by spray, brush, roller, doctor blade, air brush, or wiping techniques, in order to leave thereon after evaporation of the solvent or solvent mixture a coating having a thickness of 0.5 to 20 preferably of l to 5 1..
  • the light-sensitive coating is then ready for exposure to actinic light rays.
  • Suitable light sources include carbon arcs, xenon lamps, mercury vapour lamps, fluorescent lamps, argon glow lamps, photographic flood lamps, and tungsten lamps.
  • each lightsensitive layer will contain a colourant, i.e. a pigment or a. dye, that should be of such a class that when the layer is transferred to the receptor, its colour value will approximate the colour value that will be produced by the printing ink to be used.
  • a colourant i.e. a pigment or a. dye
  • each of the three-dye-containing photosolubilizable elements is exposed through an appropriate colour separation photographic positive transparency.
  • the exposed portions of the photo-solubilizable layer become soluble in alkaline medium, probably through photolytic transformation of the light-sensitive compounds so that the development or removal of the coating in the exposed areas can be effected by means of an aqueous composition, preferably by means of an alkaline aqueous solution rapidly dissolving the image-wise formed decomposition products.
  • a convenient alkaline developer is an aqueous solution of a phosphate of an alkaline metal e.g. sodium phosphate, or an aqueous solution of sodium hydroxide or a mixture of both.
  • the receptor surface Before use the receptor surface is wetted with a solvent or swelling agent for the photosolubilizable binder material. Immediately thereafter, temporary support and receptor surface are pressed together with the pigmented image in between, e.g. by means of 2 rollers. As a result of the action of the solvent or the swelling agent on the pigmented image layer, the latter becomes softened on its surface and attaches itselves to the receptor surface, so that when pulling away the temporary support, the pigmented image formed by the pigmented photosolubilizable binder material remains attached to the receptor surface.
  • the receptor bearing a pig mented image formed of still light-sensitive photosolubilizable binder material is washed with a solvent for the photosolubilizable binder, that is washed away thereby, thus surprisingly leaving an exact pigment replica of the pigmented image on the receptor surface.
  • a second colour separation transparency is used to expose on a temporary support another photosolubilizable layer containing a suitable pigment or dye.
  • the exposed portions of the layer are dissolved away in aqueous alkaline medium so that a pigmented positive image from the second colour separation transparency remains on the temporary support.
  • the receptor surface already carrying this first pigment image is Wetted with a solvent or swelling agent for the photosolubilizable binder material and immediately thereafter the second temporary support is pressed thereto, with the pigmented image between them. Care must be taken that the second pigmented image is applied to the receptor surface in exact register with the already present first pigment image. Next, the second temporary support is pulled away.
  • Additional pigment images of further colour separation transparencies can be printed in the same way on the receptor surface.
  • Various dyes, pigments, and colour-forming components can be incorporated into the photosolubilizable binder material.
  • the dyes have to be resistant to diffusion and chemically inert as much as possible in the processing and washing liquids. When used in colour proofing they have to match with the absorption spectrum of the standard inks as close as possible. Particulars about standard colour inks can be found in H. M. CartwrightIlford Graphic Arts Manual (1962) vol. I-pages 502 to 504.
  • the cold colour standards are characterized by the use of fairly pure magenta pigments, mostly insolubilized Rhodamine and Phloxine-dyes, which have a very low side-absorption in the blue region of the spectrum.
  • the warm colour standards are characterized by the use of insoluble azo dyestufis.
  • Such dyestuffs are more resistant to solvents e.g. alcohol than the Rhodamines and Phloxines, but they show a much higher side-absorption in the blue region of the spectrum.
  • pigments that are very poorly soluble or insoluble in water and organic liquids of the alcohol or polyhydric alcohol type e.g. glycerol fulfill the requirements of resistance to diffusion.
  • Pigment dyes that are applied from an aqueous dispersion are used preferably, though the use of substantive dyes that are chemically linked to a colloid or polymer is not excluded.
  • the photosolubilizable binder material contains pigments in such a high concentration that the optical density in the wavelength range of maximum absorption is at least 0.35.
  • colour in the present invention is meant to encompass all pure and mixed colours as well as blackand-white.
  • Carbon black is generally used as a black pigment.
  • the adhering power of the photosolubilizable coating to its temporary support has to be adjusted in such a way that an easy stripping off from the temporary support is possible after pressing the temporary support and the receptor together with the positive image between them.
  • a relatively hydrophobic temporary support e.g. an unsubbed cellulose triacetatc sheet, a polystyrene sheet, or a sheet of co(vinyl acetate/ vinyl chloride) and a receptor having a hydrophilic surface e.g. a subbed polyethylene terephthalate support can be used therefor, e.g. a hydrohobic support subbed as described in the Belgian patent specification 721,469.
  • the photosolubilizable coating is composed in such a way that its adherence to the temporary support in wet state is weaker than in dry state.
  • hygroscopic agents e.g. a water-soluble organic hygroscopic compound e.g. glycerol and the use of wetting agents and plasticizing agents.
  • the receptor may be rigid or flexible and should only have a good adherence in wet as well as in dry state to the transferable photosolubilizable coating by nature or as a result of (a) subbing layer(s) applied thereto.
  • the receptor support is transparent or opaque. So, it is possible to use metal layers or sheets, glass, ceramics, resin supports, and paper impermeabilized for the processing and washing liquids.
  • Resin supports having a high mechanical strength, a very low water-absorption, and consequently a high dimensional stability in dry and wet state can be made of a linear polyester e.g. polyethylene terephthalate. Good results as to the dimensional stability are attained with aluminium sheets sandwiched between two high wetstrength paper sheets, but though this material is rather expensive.
  • Receptor resin supports can be made opaque by coating them with a matted subbing layer or by matting or colouring them in the mass.
  • the matting can be effected by pigments known in the art e.g. titanium dioxide, zinc oxide, and barium sulphate.
  • Hydrophobic resin supports to be used as receptor according to the present invention can be coated with one or more subbing layers.
  • Preferred subbing layers for use on a receptor hydrophobic resin support e.g. a polyethylene terephthalate support, are described in the Belgiant patent specification 721,469.
  • a sheet material which consecutively comprises a hydrophobic film support, a layer (A) that directly adheres to the said hydrophobic film support and comprises a copolymer formed from 45 to 99.5% by Weight of at least one of the chlorine-containing monomers vinylidene chloride and vinyl chloride, from 0.5 to 10% by Weight of an ethylenically unsaturated hydrophilic monomer, and from 0 to 54.5% by weight of at least one other copolymerisable ethylenically unsaturated monomer; and a layer (B) comprising in a weight ratio of 1:5 to 1:05 a mixture of gelatin and a copolymer of 30 to 70% by weight of butadiene with at least one copolymerizable ethylenically unsaturated monomer.
  • the different colour separation transparencies used are made according to processes known in the art.
  • the multicolour original is photographed two or more times through different colour filters to produce a separate transparency for each filter.
  • Each transparency will print only the colours that its filter allows to pass.
  • the separation transparencies usually will print yellow, cyan, magenta, and black, others can be used such as pink, grey, or dark-blue printers.
  • Cyan layer In a mixture of 17.5 ml. of ethylene glycol monomethyl ether and 17.5 ml. of acetone, 1.4 g. of naphthoquinone 1,2 diazide(2)-5-sulphofiuoride and 5.6 g. of Alnovol 429 K (trade name for a novolak sold by Chemische Werke Albert) were dissolved.
  • the naphthoquinone-diazide was prepared as described in Example 1 of United Kingdom patent specification 1,116,674.
  • Heliogenblau B Colanyl Teig (C.I. 74,160) (a cyan pigment dispersion marketed by Badische Anilinund Soda-Fabrik AG, Ludwigshafen (Rhine, Germany) g 1.2 Ethylene glycol monornethyl ether ml Methyl glycol acetate ml
  • the resulting mixture was then stirred for 10 min. at 30 C. by means of a high speed stirrer (20,000 r.p.m.).
  • the emulsion obtained was filtered through nylon cloth and applied to a temporary support of biaxially oriented polyethylene terephthalate having a thickness of approximatively 0.1 mm.
  • the layer was coated in such a way, that to 30 g. of emulsion covered 1 sq. m.
  • the lightsensitive layer was dried in a drying oven at 5060 C.
  • Yellow layer This layer was made in the same way as in (1).
  • the cyan paste was replaced by 1.5 g. of Yellow pigment 16 (Cl. 20,040) (Permanent Gelb NCG Colanyl Teig-trade name of Farbwerke Hoechst AG, Germany).
  • the dispersion was stirred rapidly for 10 min. at a temperature of 5 to 15 C. and then heated to 35 C., at which temperature 400 m1. of a 10% by weight aqueous solution of gelatin were added, while continuing the rapid stirring. Subsequently, the following composition was added whilst stirring slowly to avoid scumming:
  • a 10% by weight aqueous solution of gelatin 1800 Water 130 20% by weight latex of the copolymer of butadiene and methyl methacrylate (ratio by weight 50:50) 2500 10% by weight aqueous solution of the sodium salt of oleylmethyltauride 37.5
  • Ethylene chlorohydrin 500 The coating was carried out at such a ratio that upon drying a layer having a thickness of 5a was obtained.
  • the developer is a 10% aqueous solution of sodium phosphate.
  • the exposed layers were immersed for 2 min. in the developing bath, whereupon the exposed portions were washed away by rubbing gently with a sponge or with a plug of wadding.
  • the resulting diapositive image was then removed from the bath, rinsed carefully with water and dried in a hot air-stream.
  • the developer is a 0.5% aqueous solution of sodium hydroxide.
  • the exposed layers were immersed for 1 min. in this developing bath, where-upon the exposed portions were washed away with a sponge or a plug of wadding as described in paragraph (1). Subsequently, the resulting image was rinsed and dried as described under (1). In this manner four coloured separation diapositives were obtained.
  • the receptor support was then immersed again for 30 sec. to 1 min. in a mixture of ethanol and water (80:20 by volume) or in a methanol bath.
  • the non-exposed quinone-diazide and the novolak were extracted thereby, so that only a cyan pigment image remained on the receptor surface.
  • the receptor surface was dried with a hot air-stream.
  • the different pigmented images on the temporary supports could also be registered easily in overlay. In this way there was also obtained a sharp colour reproduction of the original.
  • EXAMPLE 2 Formation of colour images with compounds containing a diazosulphone group
  • A Composition of the photosolubilizable layers
  • Cyan layer In a mixture of 17.5 ml. of ethylene glycol monomethyl ether and 17.5 ml. of acetone 0.7 g. of (p-tolylsulphonyl)-(p-diethylaminophenyl) diimide and 6.3 g. of Alnovol 429 K (novolak of Chemische Werke Albert) were dissolved. The solution was then admixed with:
  • Yellow layer This layer was composed in the same way as the cyan layer.
  • the cyan paste was replaced by 1.5 g. of pigment dispersion Imperongelb K-GG (high concentration) (trade name of Farbwerke Hoechst, Germany).
  • Magenta layer This layer was formed in the same way as in paragraph (1) with the difference, however, that the cyan paste was replaced by 1.8 g. of pigment dispersion Permanent Carmin FBB Colanyl Teig (C.I. 11,000) of Farbwerke Hoechst, Germany).
  • Example 1(D) Formation of pigment image by transfer to the receptor support
  • the same receptor film as in Example 1(B) was used here.
  • the process of Example 1(E) was repeated. An exact reproduction of the original coloured image was obtained.
  • the mixture was stirred for 10 min. with a high speed stirrer with 20,000 r.p.m. Subsequently, the light-sensitive emulsion was filtered through a nylon cloth and coated at a ratio of 20-30 g. of emulsion per sq.m. on a biaxially stretched polyethylene terephthalate film support. The light-sensitive film was dried at 5060 C.
  • steps (A)- (D) are repeated one or more times, using in each case a light-sensitive element with a light-sensitive layer of a different color and a dilferent color separation transparency which records the distribution of the corresponding color in the original, and wherein a multi-color image is produced by combining the different colored positive images of the different color separation transparencies.
  • said binder is a mixture of a novolak resin and a naphthoquinone-1,2- diazide (2)-[4] sulphofiuoride.
  • said binder is a mixture of a novolak resin and bis-(2-bromo-6-diazo- 2,4-cyclohexadien-4-yl l-on) sulphone.
  • said binder is a mixture of a novolak resin and (p-tolylsulphonyl)-(pdiethylaminophenyl) diimide.
  • said binder is a mixture of a novolak resin and (4-5-olylsulphonyl)-(4- dimethylaminobenzoyl)-diazomethane.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Photosensitive Polymer And Photoresist Processing (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
US00149087A 1970-06-02 1971-06-01 Process for producing multicolour photographic images Expired - Lifetime US3764318A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2661170 1970-06-02

Publications (1)

Publication Number Publication Date
US3764318A true US3764318A (en) 1973-10-09

Family

ID=10246347

Family Applications (1)

Application Number Title Priority Date Filing Date
US00149087A Expired - Lifetime US3764318A (en) 1970-06-02 1971-06-01 Process for producing multicolour photographic images

Country Status (5)

Country Link
US (1) US3764318A (OSRAM)
BE (1) BE766037A (OSRAM)
DE (1) DE2120086A1 (OSRAM)
FR (1) FR2095515A5 (OSRAM)
GB (1) GB1342088A (OSRAM)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3969118A (en) * 1973-06-20 1976-07-13 Hoechst Aktiengesellschaft Light-sensitive o-quinone diazide containing copying layer
US3969115A (en) * 1974-10-15 1976-07-13 Rcs Color Labs Graphics process using a composite of color separated negatives
US4041204A (en) * 1973-01-18 1977-08-09 The Autotype Company Limited Dry transfer sheets
US4093464A (en) * 1972-07-27 1978-06-06 Hoechst Aktiengesellschaft Light sensitive o-quinone diazide containing transfer composition
WO1981000772A1 (en) * 1979-09-05 1981-03-19 Minnesota Mining & Mfg Single sheet color proofing diazo oxide system
US4262071A (en) * 1979-08-20 1981-04-14 Minnesota Mining And Manufacturing Company Optical enhancement of color proofing images
US4659642A (en) * 1984-10-22 1987-04-21 American Hoechst Corporation Positive working naphthoquinone diazide color proofing transfer process
US4772533A (en) * 1984-10-22 1988-09-20 American Hoechst Corporation Positive working naphthoquinone diazide color proofing element with polyvinyl acetate adhesive layer
US4985337A (en) * 1988-11-15 1991-01-15 Konica Corporation Image forming method and element, in which the element contains a release layer and a photosensitive o-quinone diaziode layer
US4994350A (en) * 1988-09-07 1991-02-19 Konica Corporation Method for forming a color proof having a specified toe gradation
US5100757A (en) * 1988-10-21 1992-03-31 Hoechst Celanese Corporation Method for forming a colored image on a degradable sheet material
US5183723A (en) * 1988-10-21 1993-02-02 Hoechst Celanese Corporation Colored image on a degradable sheet material and method of formation
US5364731A (en) * 1987-01-30 1994-11-15 Konica Corporation Multi-color transfer image forming method to form color proofs
WO1997008587A1 (en) * 1995-08-30 1997-03-06 Cromax Uk Ltd. A printing apparatus and method

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4093464A (en) * 1972-07-27 1978-06-06 Hoechst Aktiengesellschaft Light sensitive o-quinone diazide containing transfer composition
US4041204A (en) * 1973-01-18 1977-08-09 The Autotype Company Limited Dry transfer sheets
US3969118A (en) * 1973-06-20 1976-07-13 Hoechst Aktiengesellschaft Light-sensitive o-quinone diazide containing copying layer
US3969115A (en) * 1974-10-15 1976-07-13 Rcs Color Labs Graphics process using a composite of color separated negatives
US4262071A (en) * 1979-08-20 1981-04-14 Minnesota Mining And Manufacturing Company Optical enhancement of color proofing images
WO1981000772A1 (en) * 1979-09-05 1981-03-19 Minnesota Mining & Mfg Single sheet color proofing diazo oxide system
US4260673A (en) * 1979-09-05 1981-04-07 Minnesota Mining And Manufacturing Company Single sheet color proofing system
JPS56501217A (OSRAM) * 1979-09-05 1981-08-27
US4659642A (en) * 1984-10-22 1987-04-21 American Hoechst Corporation Positive working naphthoquinone diazide color proofing transfer process
US4772533A (en) * 1984-10-22 1988-09-20 American Hoechst Corporation Positive working naphthoquinone diazide color proofing element with polyvinyl acetate adhesive layer
US5364731A (en) * 1987-01-30 1994-11-15 Konica Corporation Multi-color transfer image forming method to form color proofs
US4994350A (en) * 1988-09-07 1991-02-19 Konica Corporation Method for forming a color proof having a specified toe gradation
US5100757A (en) * 1988-10-21 1992-03-31 Hoechst Celanese Corporation Method for forming a colored image on a degradable sheet material
US5183723A (en) * 1988-10-21 1993-02-02 Hoechst Celanese Corporation Colored image on a degradable sheet material and method of formation
US4985337A (en) * 1988-11-15 1991-01-15 Konica Corporation Image forming method and element, in which the element contains a release layer and a photosensitive o-quinone diaziode layer
WO1997008587A1 (en) * 1995-08-30 1997-03-06 Cromax Uk Ltd. A printing apparatus and method

Also Published As

Publication number Publication date
DE2120086A1 (de) 1971-12-09
FR2095515A5 (OSRAM) 1972-02-11
BE766037A (nl) 1971-10-21
GB1342088A (en) 1973-12-25

Similar Documents

Publication Publication Date Title
US3721557A (en) Method for transferring colored image and light-sensitive transfer sheets therefor
US3669658A (en) Photosensitive printing plate
US3622320A (en) Thermographic processes and elements utilizing photocrosslinkable polyesters
US3764318A (en) Process for producing multicolour photographic images
US4299906A (en) Light-sensitive color proofing film with surfactant in a light-sensitive coating
US4376158A (en) Color-proofing method
DE2331377A1 (de) Lichtempfindliche kopierschicht
US3798034A (en) Process for the production of half-tone and line work multi-color photographic images
US2993788A (en) Multicolor reproduction using light sensitive diazo oxides
US4980260A (en) Multi-color image-forming method with microcapsule positive diazotype color image formation and positive light-solubilizing color image formation
US3681074A (en) Production of coloured colloid patterns
US3642474A (en) Method for producing halftone multicolor images
US4948693A (en) Positive working color proofing system comprising polyvinyl acetal/polyvinyl alcohol/polyvinyl acetate resin
US4783390A (en) Multicolor diazo image-forming material
JPH045980B2 (OSRAM)
US5053310A (en) Negative working diazo resin color proofing material comprising polyvinyl acetal/polyvinyl, alcohol/polyvinyl acetate resin
US3728120A (en) Formation of relief images
US3682635A (en) Manufacture of coloured colloid patterns
JPH05107748A (ja) 着色陽画処理感光性記録材料およびこの材料を使用する陽画および陰画の両方の色試験画像の製造方法
JPH0146860B2 (OSRAM)
US3793026A (en) Photochemical reproduction process
DE3546007C2 (OSRAM)
JPH0462375B2 (OSRAM)
JPH01155349A (ja) 着色画像形成材料
JPH0327105B2 (OSRAM)