EP0584407B1 - Matériau récepteur d'image pour utilisation dans un procédé de diffusion transfert de sel d'argent - Google Patents

Matériau récepteur d'image pour utilisation dans un procédé de diffusion transfert de sel d'argent Download PDF

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Publication number
EP0584407B1
EP0584407B1 EP19920202602 EP92202602A EP0584407B1 EP 0584407 B1 EP0584407 B1 EP 0584407B1 EP 19920202602 EP19920202602 EP 19920202602 EP 92202602 A EP92202602 A EP 92202602A EP 0584407 B1 EP0584407 B1 EP 0584407B1
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EP
European Patent Office
Prior art keywords
image receiving
image
receiving material
layer
silver halide
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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
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EP19920202602
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German (de)
English (en)
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EP0584407A1 (fr
Inventor
Jean-Pierre Tahon
Daniel Timmerman
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Agfa Gevaert NV
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Agfa Gevaert NV
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Priority to DE1992625222 priority Critical patent/DE69225222T2/de
Priority to EP19920202602 priority patent/EP0584407B1/fr
Priority to JP19895093A priority patent/JPH0695320A/ja
Publication of EP0584407A1 publication Critical patent/EP0584407A1/fr
Application granted granted Critical
Publication of EP0584407B1 publication Critical patent/EP0584407B1/fr
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Classifications

    • 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
    • G03C8/42—Structural details
    • G03C8/52—Bases or auxiliary layers; Substances therefor
    • 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
    • G03C8/24—Photosensitive materials characterised by the image-receiving section
    • G03C8/26—Image-receiving layers
    • G03C8/28—Image-receiving layers containing development nuclei or compounds forming such nuclei

Definitions

  • the present invention relates to an image-receiving material suitable for use in the silver complex diffusion transfer reversal process.
  • DTR-process The principles of the silver complex diffusion transfer reversal process, hereinafter called DTR-process, have been described e.g. in US-A 2,352,014 and in the book “Photographic Silver Halide Diffusion Processes” by André Rott and Edith Weyde - The Focal Press - London and New York, (1972).
  • the DTR-process initially only intended for office copying purposes has found now wide application in the graphic art field, more particularly in the production of screened prints from continuous tone originals.
  • continuous tone information is transformed into halftone information using graphic art screen exposure techniques.
  • Essential in screening is the transformation of continuous tone values into black dots of different size and different % dot covering, also called % dot value.
  • DTR-positive materials now available on the market are composed of two or even three layers. Such materials normally contain on top of the nuclei containing layer a layer which itself contains no nuclei and otherwise has the same composition as the nuclei containing layer and mainly serves to ensure good contact between the negative and positive material during transfer. Moreover, after drying this layer provides a protective coating for the image receiving layer containing the silver image. It further prevents bronzing or plumming of the black image areas in preventing the protruding of silver from the image receiving layer in the form of a glossy silver mirror (ref. the above mentioned book p. 50).
  • EP-A-306 561 discloses an image receiving material which contains (1) an image-receiving layer containing physical development nuclei dispersed in a waterpermeable binder and (2) a waterpermeable top layer containing a hydrophilic colloid wherein (i) the total solids coverage of said two layers is at most 2 g/m 2 , (ii) in layer (1) the coverage iof said nuclei is in the range of 0.1 mg/m 2 to 10 mg/m 2 , and the coverage of binder is in the range of 0.4 to 1.3 g/m 2 , and (iii) in said top layer (2) the coverage of hydrophilic colloid is in the range of 0.1 to 0.9 g/m 2 .
  • the transfer behaviour of the complexed silver largely depends on the thickness of the image-receiving layer and the kind of binding agent or mixture of binding agents used in the nuclei containing layer.
  • the thickness of the nuclei containing layer and layers on top thereof is kept minimal.
  • a paper sheet between two image receiving sheets in a package A disadvantageous hereof is that additional paper waste is produced and the cost of the package is increased.
  • a matting agent may be included in the top layer of the image receiving layer to keep a certain distance between two image receiving materials in a package.
  • matting agent it is known to use for example an inorganic matting agent e.g. silica or hydrophobic polymer particles as e.g. polymethyl methacrylate particles.
  • inorganic matting agent e.g. silica or hydrophobic polymer particles as e.g. polymethyl methacrylate particles.
  • These matting agents cause a dramatic decrease of the image quality in a number of respects as e.g. the density is decreased, the number of pinholes increases etc.
  • Japanese patent applications laid open to public inspection no. 45243/86 and 45244/86 disclose the use of an alkali soluble matting agent in an image receiving element for use in a silver salt diffusion transfer process. However even the there disclosed matting agents were found unsuitable for use in an image receiving material having a thin layer package of image receiving layer and top layer.
  • the thickness of the image receiving layer and top layer is kept to a minimal including a matting agent in the top layer results in a disturbance of the image receiving layer during coating due to penetration of the matting agent into the image receiving layer. As a consequence thereof there will be pinholes in the image obtained with such an image receiving material because at the places where matting agents have penetrated the image receiving layer there will be no more nuclei or less nuclei.
  • an image receiving material comprising on a support an image receiving layer containing physical development nuclei and a top layer free of physical development nuclei on top thereof, the total solid coverage of both layers being at most 2.5g/m 2 characterized in that said top layer comprises a matting agent having a solubility such that 0.2g of matting agent can be completely dissolved in 10ml of an aqueous solution containing 1 mol/l of sodium hydroxide at room temperature within 10s or less.
  • the matting agents to be used in connection with the present invention are preferably copolymers of one or more hydrophobic monomers and one or more hydrophilic monomers containing an acid group.
  • Suitable hydrophobic monomers are e.g. (meth)acrylate esters e.g. methylmethacrylate, ethylmethacrylate, methylacrylate, stearylmethacrylate, stearylacrylate, butyl(meth)acrylate, styrene, vinyl chloride, vinylidene chloride.
  • Preferred hydrophilic monomers are those having a carboxylic group e.g. methacrylic acid or acrylic acid.
  • the molar ratio of the hydrophobic to hydrophilic monomers in said copolymers is preferably between 1:1 and 1:3 and more preferably between 1:1 and 1:2 and most preferably between 1:1 and 4:5.
  • the volume average diameter (d mv ) of the matting agents is preferably larger than the thickness of the top layer.
  • the volume average diameter is understood the median diameter representing 50% by volume of matting agents having a diameter less than said median diameter.
  • the volume average diameter is between 1.5 ⁇ m and 6 ⁇ m and more preferably between 1.8 ⁇ m and 3.8 ⁇ m.
  • a homogeneous distribution in connection with the present invention means that the ratio of the volume average diameter (d mv ) to the number average diameter (d mn ) is between 1 and 1.1 and more preferably between 1 and 1.05.
  • the number average diameter (d mn ) is the median diameter representing 50% by number of the matting agents having a diameter less than said median diameter.
  • the matting agents used in connection with the present invention can be prepared according to the method described in DE-A-3331542.
  • the amount of matting agent contained in an image receiving material in connection with the present invention is preferably between 1 mg/m 2 and 100mg/m 2 , more preferably between 4 mg/m 2 and 40mg/m 2 and most preferably between 8 mg/m 2 and 20mg/m 2 .
  • the support of the image receiving material may be opaque or transparent, e.g. a paper support or resin support.
  • the image receiving layer comprises for best imaging results physical development nuclei normally in the presence of a protective hydrophilic colloid, e.g. gelatin and/or colloidal silica.
  • a protective hydrophilic colloid e.g. gelatin and/or colloidal silica.
  • Preferred development nuclei are sulphides of heavy metals e.g. sulphides of antimony, bismuth, cadmium, cobalt, lead, nickel, palladium, platinum, silver, and zinc.
  • suitable development nuclei are NiS.Ag 2 S nuclei as described in US-A-4,563,410.
  • Other suitable development nuclei are salts such as e.g. selenides, polyselenides, polysulphides, mercaptans, and tin (II) halides.
  • Heavy metals or salts thereof and fogged silver halide are suitable as well.
  • the complex salts of lead and zinc sulphides are active both alone and when mixed with thioacetamide, dithiobiuret, and dithiooxamide.
  • Heavy metals preferably silver, gold, platinum, palladium, and mercury can be used in colloidal form.
  • the image-receiving element may contain in operative contact with the development nuclei thioether compounds, e.g. those described in DE-C 1,124,354, in US-A 4,013,471 and 4,072,526, and in published European Patent Application (EP-A) 0 026 520.
  • the development nuclei thioether compounds e.g. those described in DE-C 1,124,354, in US-A 4,013,471 and 4,072,526, and in published European Patent Application (EP-A) 0 026 520.
  • the transfer behaviour of the complexed silver largely depends on the thickness of the image-receiving layer and the kind of binding agent or the mixture of binding agents used in the nuclei containing layer.
  • the total solid coverage of the image receiving layer and top layer is preferably not more than 2.5g/m 2 and most preferably not more than 2g/m 2 .
  • the top layer contained in an image receiving material in accordance with the present invention contains a hydrophilic colloid.
  • the total solid coverage of the top layer is preferably between 0.1g/m 2 and 1.5g/m 2 .
  • the image receiving material contains on a support (1) an image-receiving layer containing physical development nuclei dispersed in a waterpermeable binder and (2) a waterpermeable top layer according to the invention free from development nuclei and containing a hydrophilic colloid wherein:
  • the nuclei containing layer (1) is present on a nuclei-free underlying hydrophilic colloid undercoat layer or undercoat layer system having a coverage in the range of 0.1 to 1 g/m 2 of hydrophilic colloid, the total solids coverage of layers (1) and (2) together with the undercoat being preferably at most 2.5 g/m 2 .
  • the undercoat optionally incorporates substances that improve the image quality, e.g. incorporates a substance improving the image-tone or the whiteness of the image background.
  • the undercoat may contain a fluorescent substance, silver complexing agent(s) and/or development inhibitor releasing compounds known for improving image sharpness.
  • the image-receiving layer is applied on an undercoat playing the role of a timing layer in association with an acidic layer serving for the neutralization of alkali of the image-receiving layer.
  • a timing layer By the timing layer the time before neutralization occurs is established, at least in part, by the time it takes for the alkaline processing composition to penetrate through the timing layer.
  • Materials suitable for neutralizing layers and timing layers are disclosed in Research Disclosure July 1974, item 12331 and July 1975, item 13525.
  • gelatin is used preferably as hydrophilic colloid.
  • gelatin is present preferably for at least 60 % by weight and is optionally used in conjunction with an other hydrophilic colloid, e.g. polyvinyl alcohol, cellulose derivatives, preferably carboxymethyl cellulose, dextran, gallactomannans, alginic acid derivatives, e.g. alginic acid sodium salt and/or watersoluble polyacrylamides.
  • Said other hydrophilic colloid may be used also in the top layer for at most 10 % by weight and in the undercoat in an amount lower than the gelatin content.
  • the image-receiving layer and/or a hydrophilic colloid layer in water-permeable relationship therewith may comprise a silver halide developing agent and/or silver halide solvent, e.g. sodium thiosulphate in an amount of approximately 0.1 g to approximately 4 g per m 2 .
  • a silver halide developing agent and/or silver halide solvent e.g. sodium thiosulphate in an amount of approximately 0.1 g to approximately 4 g per m 2 .
  • the image-receiving layer or a hydrophilic colloid layer in water-permeable relationship therewith may comprise colloidal silica.
  • At least one of the layers of the present image-receiving material substances can be contained, which play a role in the determination of the colour tone of the diffusion transfer silver image.
  • Substances providing a neutral colour tone are called black-toning agents, e.g. as described in GB A 561,875 and BE A 502,525.
  • the processing liquid that will be described in detail below and/or the image-receiving material contains at least one image toning agent.
  • the image toning agent(s) may gradually transfer by diffusion from said image-receiving element into the processing liquid and keep therein the concentration of said agents almost steady.
  • concentration of said agents almost steady.
  • such can be realized by using the silver image toning agents in a coverage in the range from 1 mg/m 2 to 20 mg/m 2 in a hydrophilic waterpermeable colloid layer.
  • Still further toning agents suitable for use in accordance with the preferred embodiment of the present invention are the toning agents described in the European patent applications EP-A-218752, 208346, 218753 and US-A-4683189.
  • the development nuclei containing layer and/or hydrophilic colloid layer in waterpermeable relationship or a back layer at the side of the support opposite to that carrying the image receiving layer contains at least part of the silver image toning agents.
  • Such procedure results actually in automatic replenishment of toning agent in the processing liquid.
  • an optical brightening agent in the present image-receiving material preference is given to an optical brightening agent that is inherently by its structure resistant to diffusion or is made resistant to diffusion by use in conjunction with another substance wherein it is dissolved or whereto it is adsorbed.
  • the optical brightening compound is substituted with a long chain aliphatic residue and ionomeric residue as is known in the synthesis of diffusion resistant colour couplers.
  • an optical brightening agent of the oleophilic type is incorporated in droplets of a water-immiscible solvent, so-called “oilformer”, e.g. dibutylphthalate.
  • the optical brightening agent is used in conjunction with a polymeric hydrophilic colloid adsorber, a so-called trapping agent, e.g. poly-N-vinylpyrrolidinone as described e.g. in US-A 3,650,752, 3,666,470 and 3,860,427 and published European patent application EP-A-0 106 690.
  • a trapping agent e.g. poly-N-vinylpyrrolidinone as described e.g. in US-A 3,650,752, 3,666,470 and 3,860,427 and published European patent application EP-A-0 106 690.
  • latex compositions are used wherein latex particles are loaded, i.e. contain in dissolved and/or adsorbed state an optical brightening agent as described e.g. in German Offenlegungsschrift (DE-A) 1,597,467 and in US-A 4,388,403.
  • an optical brightening agent as described e.g. in German Offenlegungsschrift (DE-A) 1,597,467 and in US-A 4,388,403.
  • the image-receiving layer and/or other hydrophilic colloid layer of the present image-receiving material may have been hardened to achieve enhanced mechanical strength.
  • Appropriate hardening agents for hardening the natural and/or synthetic hydrophilic colloid binding agents in the image-receiving layer include e.g. formaldehyde, glyoxal, mucochloric acid, and chrome alum.
  • Hardening can also be effected by incorporating a hardener precursor in the image-receiving layer, the hardening of the hydrophilic colloid therein being triggered by the treatment with the alkaline processing liquid.
  • Other suitable hardening agents for hardening the hydrophilic colloid binding agents in the image-receiving layer are vinylsulphonyl hardeners, e.g. as described in Research Disclosure 22,507 of Jan. 1983.
  • the image-receiving material according to the present invention can be used in the form of roll film or sheet film or in the form of a filmpack e.g., for in-camera-processing.
  • the present image-receiving material can be used in conjunction with any type of photographic silver halide emulsion material suited for use in diffusion transfer reversal processing, preference being given to silver halide emulsion layers the silver halide of which is mainly silver chloride because of its relatively easy complexing with thiosulphate ions.
  • the silver halide grains can have any size or shape and may be prepared by any technique known in the art, e.g. by single-jet or double jet precipitation. Negative type or direct-positive type silver halide grains may be used. Negative and positive working type silver halide emulsions are known in the art and are described e.g. in Research Disclosure, November 1976, item 15162.
  • the binder of the photographic silver halide emulsion layer in the photographic material is preferably gelatin. But instead of or together with gelatin, one or more other natural and/or synthetic hydrophilic colloids e.g. albumin, casein, zein, polyvinyl alcohol, alginic acids or salts thereof, cellulose derivatives such as carboxymethyl cellulose, modified gelatin, etc. can be used.
  • the weight ratio of hydrophilic colloid to silver halide expressed as equivalent amount of silver nitrate in the silver halide emulsion layer(s) of the photosensitive element usually is between 1:1 and 10:1.
  • the photosensitive element may contain in the photographic silver halide emulsion layer and/or in one or more layers in water-permeable relationship therewith any of the kinds of compounds customarily used in such layers for carrying out the DTR-process.
  • Such layers may comprise e.g. one or more developing agents, coating aids, stabilizing agents or fog-inhibiting agents e.g. as described in GB-A-1,007,020 and in the above-mentioned Research Disclosure N° 24236 , plasticizers, development-influencing agents e.g. polyoxyalkylene compounds, onium compounds, and thioether compounds as described e.g.
  • developing agents are to be incorporated into the silver halide emulsion, they are added to the emulsion composition preferably after the chemical ripening stage following the washing of the emulsion.
  • the silver complex diffusion transfer reversal processing is by nature a wet processing including development of the exposed silver halide in the emulsion layer of the photosensitive element, the complexing of residual undeveloped silver halide and the diffusion transfer of the silver complexes into the image-receiving material wherein physical development takes place.
  • the processing proceeds in alkaline aqueous medium.
  • the developing agent or a mixture of developing agents can be incorporated into an alkaline processing solution and/or into the photosensitive element comprising a photographic silver halide emulsion layer.
  • the developing agent(s) can be present in the silver halide emulsion layer or are preferably present in a hydrophilic colloid layer in water-permeable relationship therewith, e.g. in the anti-halation layer adjacent to the silver halide emulsion layer of the photosensitive element.
  • the processing solution is merely an aqueous alkaline solution that initiates and activates the development.
  • Suitable developing agents for the exposed silver halide are e.g. hydroquinone-type and 1-phenyl-3-pyrazolidone-type developing agents as well as p-monomethylaminophenol.
  • the silver halide solvent preferably sodium thiosulphate
  • the silver halide solvent may be supplied from the non-light-sensitive image-receiving element as mentioned above, but it is normally at least partly already present in the alkaline processing solution.
  • the amount of silver halide solvent is in the range of e.g. 10 g/l to 50 g/l.
  • the alkaline processing solution usually contains alkaline substances preserving agents e.g. sodium sulphite, thickening agents e.g. hydroxyethylcellulose and carboxymethylcellulose, fog-inhibiting agents such as potassium bromide, silver halide solvents e.g. sodium or ammonium thiosulphate, black-toning agents especially heterocyclic mercapto compounds.
  • alkaline substances preserving agents e.g. sodium sulphite, thickening agents e.g. hydroxyethylcellulose and carboxymethylcellulose, fog-inhibiting agents such as potassium bromide, silver halide solvents e.g. sodium or ammonium thiosulphate, black-toning agents especially heterocyclic mercapto compounds.
  • the pH of the processing solution is preferably in the range of 10 to 14.
  • Preferred alkaline substances are inorganic alkali e.g. sodium hydroxide, potassium carbonate or alkanolamines or mixtures thereof.
  • Preferably used alkanolamines are tertiary alkanolanines e.g. those described in EP-A-397925, EP-A-397926, EP-A-397927, EP-A-398435 and US-A-4.632.896.
  • a combination of alkanolamines having both a pk a above or below 9 or a combination of alkanolamines whereof at least one has a pk a above 9 and another having a pk a of 9 or less may also be used as disclosed in the Japanese patent applications laid open to the public numbers 73949/61, 73953/61, 169841/61, 212670/60, 73950/61, 73952/61, 102644/61, 226647/63, 229453/63, US-A-4,362,811, US-A-4,568,634.
  • the concentration of these alkanolamines is preferably from 0.1 mol/l to 0.9 mol/l.
  • the image receiving elements according to the present invention are particularly suited for the reproduction of line and screen images. They can be used likewise for the production of identification documents according to the DTR-process.
  • identification documents contain a photograph and/or identification data formed by diffusion transfer in an image-receiving layer on a water-impermeable resin support, e.g. polyvinyl chloride resin support or polyethylene-covered paper support, which to exclude any forgery by alteration of the identification data and/or photograph, is laminated to a transparent protective cover sheet.
  • the transparent protective cover sheet usually is a thermoplastic resin sheet such as a polyester film sheet, e.g. a polyethylene terephtalate film sheet, which is coated with polyethylene at the side that is to be laminated against the image-receiving-layer carrying the identification data.
  • reaction mixture was introduced into a 15 liter stirrer vessel, which serves as a receiver, with constant stirring:
  • a polyethylene terephthalate film support (provide with a hydrophilic adhesion layer) was coated on both sides at a dry coverage of 2.0 g/m 2 with an image-receiving layer containing silver-nickel sulphide nuclei and gelatin. This layer was applied by slide hopper coating so that the nuclei were in an undermost coating of 1.3 g gelatin per m 2 .
  • a top layer was provided from the coating solution shown hereafter such that the amount of gelatin in the top layer corresponded to 0.7 g of gelatin per m 2 . coating solution for the top layer:
  • the image receiving material was hardened with formaldehyde which was contained in an amount of 0.02mg/m 2 in the image receiving material.
  • an antihalation layer containing carbon black in such an amount that the optical density for visual light corresponded to 0.6 and gelatin in an amount of 3.9 g/m 2 .
  • a gelatino silver chlorobromide emulsion (98.2mol% of chloride and 1.8 mol% of silver bromide) spectrally sensitized with an ortho sensitizer at a coverage of 2.5g/m 2 of silver halide expressed as AgNO 3 .
  • the weight ratio of gelatin to silver halide expressed as AgNO 3 was 1.2.
  • the silver halide emulsion layer further contained hydroquinone and 1-phenyl-4-methyl-pyrazolidone at a coverage of 0.9g and 0.25 g/m 2 respectively.
  • the silver halide layer was then covered with a gelatin layer containing 0.5g/m 2 of gelatin.
  • Each of the image receiving materials listed in table 2 was contacted with an image-wise exposed imaging element as described above and processed in a transfer processor Copyproof CP380 (commercially available from Agfa-Gevaert N.V.) using the above described processing liquid.
  • the transfer contact time was 60s and a temperature of 22°C was used to carry out the processing.
  • Image-wise exposure of the imaging elements proceeded through the back of their support.
  • the maximum transmission density of each of the obtained images was measured and the difference of the measured density with the measured density of the control sample, that did not include a matting agent, was calculated.
  • the stickiness of each of the receiving materials was evaluated by putting two sheets (A4 size) thereof under a weight of 2 kg for 5 days at 35°C and 80% relative humidity. They were then peeled apart and the stickiness was measured and a number between 0 and 10 was assigned to indicate the level of stickiness (a higher number indicating an increasing level of stickiness, i.e. a value of 5 already indicates an unacceptable level).
  • the number of pinholes was visually evaluated by means of a magnifying glass and by holding the image receiving material against the light. A number between 0 and 10 was assigned to indicate the level of pinholes (a higher number indicates a higher level of pinholes).

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Photosensitive Polymer And Photoresist Processing (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)

Claims (8)

  1. Matériau récepteur d'image contenant, sur un support, une couche réceptrice d'image contenant des germes de développement physique et une couche superficielle exempte de germes de développement physique, disposée dessus, le poids total de l'enduit en matière sèche des deux couches étant 2,5 g/m2 tout au plus, caractérisé en ce que cette couche superficielle contient un agent de matage dont la solubilité est telle que 0,2 g d'agent de matage peut se dissoudre complètement dans un délai de 10 s ou moins dans 10 ml d'une solution aqueuse contenant 1 mol/l d'hydroxide de sodium à température ambiante.
  2. Matériau récepteur d'image selon la revendication 1 caractérisé en ce que cet agent de matage est un copolymère d'un ou de plusieurs monomères hydrophobes et d'un ou de plusieurs monomères hydrophiles contenant un groupe acide.
  3. Matériau récepteur d'image selon la revendication 2, caractérisé en ce que le rapport molaire des monomères hydrophobes aux monomères hydrophiles dans ce copolymère est compris entre 1:1 et 1:2.
  4. Matériau récepteur d'image selon l'une quelconque des revendications 1 à 3, caractérisé en ce que le diamètre moyen de cet agent de matage basé sur la fraction volumétrique est supérieur à l'épaisseur de cette couche superficielle.
  5. Matériau récepteur d'image selon la revendication 4, caractérisé en ce que ce diamètre moyen basé sur la fraction volumétrique est compris entre 1,8 µm et 3,8 µm.
  6. Matériau récepteur d'image selon l'une quelconque des revendications précédentes 1 à 5, caractérisé en ce que le poids total de l'enduit en matière sèche de cette couche réceptrice d'image et de la couche superficielle n'est pas supérieur à 2 g/m2.
  7. Matériau récepteur d'image selon l'une quelconque des revendications précédentes, caractérisé en ce que le rapport du diamètre moyen basé sur la fraction volumètrique au diamètre moyen basé sur la fraction numérique est compris entre 1,0 et 1,1.
  8. Procédé de formation d'images comprenant les étapes consistant à
    exposer, sous forme d'image, un élément formateur d'image contenant une couche d'émulsion aux halogénures d'argent,
    developper cet élément formateur d'image pendant qu'il est en contact avec un matériau récepteur d'image en présence d'un ou de plusieurs agents développateurs et d'un ou de plusieurs solvants des halogénures d'argent, et
    séparer cet élément formateur d'image du matériau récepteur d'image,
    caractérisé en ce que ce matériau récepteur d'image est tel que défini dans les revendications précédentes.
EP19920202602 1992-08-27 1992-08-27 Matériau récepteur d'image pour utilisation dans un procédé de diffusion transfert de sel d'argent Expired - Lifetime EP0584407B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE1992625222 DE69225222T2 (de) 1992-08-27 1992-08-27 Bildempfangsmaterial zur Verwendung in einem Silbersalz-Diffusionsübertragungsverfahren
EP19920202602 EP0584407B1 (fr) 1992-08-27 1992-08-27 Matériau récepteur d'image pour utilisation dans un procédé de diffusion transfert de sel d'argent
JP19895093A JPH0695320A (ja) 1992-08-27 1993-07-16 銀塩拡散転写法に使用するための像受容材料

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19920202602 EP0584407B1 (fr) 1992-08-27 1992-08-27 Matériau récepteur d'image pour utilisation dans un procédé de diffusion transfert de sel d'argent

Publications (2)

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EP0584407A1 EP0584407A1 (fr) 1994-03-02
EP0584407B1 true EP0584407B1 (fr) 1998-04-22

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EP (1) EP0584407B1 (fr)
JP (1) JPH0695320A (fr)
DE (1) DE69225222T2 (fr)

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DE69608265T2 (de) * 1996-07-04 2000-11-02 Agfa Gevaert Nv Bildelement zur Herstellung einer verbesserten Druckplatte nach dem Silbersalz-Diffusionsübertragungsverfahren
EP0816923B1 (fr) * 1996-07-04 2000-05-10 Agfa-Gevaert N.V. Elément formateur d'images pour la production d'une plaque d'impression améliorée suivant le procédé diffusion-transfert de sel d'argent
DE19848896A1 (de) * 1998-10-23 2000-04-27 Bayer Ag Copolymerisate für Rapid Prototyping
JP2001117823A (ja) 1999-10-15 2001-04-27 Fuji Xerox Co Ltd アクセス資格認証機能付きデータ記憶装置

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BE608794A (fr) * 1961-10-04
JPS4918814B1 (fr) * 1970-10-15 1974-05-13
DE3775217D1 (de) * 1987-09-08 1992-01-23 Agfa Gevaert Nv Bildempfangsmaterial.

Also Published As

Publication number Publication date
EP0584407A1 (fr) 1994-03-02
DE69225222T2 (de) 1998-10-29
JPH0695320A (ja) 1994-04-08
DE69225222D1 (de) 1998-05-28

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