EP0600308A1 - Eléments photographiques en couleur sensible à la lumière et procédé pour les développer - Google Patents

Eléments photographiques en couleur sensible à la lumière et procédé pour les développer Download PDF

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Publication number
EP0600308A1
EP0600308A1 EP93118552A EP93118552A EP0600308A1 EP 0600308 A1 EP0600308 A1 EP 0600308A1 EP 93118552 A EP93118552 A EP 93118552A EP 93118552 A EP93118552 A EP 93118552A EP 0600308 A1 EP0600308 A1 EP 0600308A1
Authority
EP
European Patent Office
Prior art keywords
developing
light
sensitive material
color photographic
sensitive
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.)
Granted
Application number
EP93118552A
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German (de)
English (en)
Other versions
EP0600308B1 (fr
Inventor
Ivano Delprato
Massimo Bertoldi
Ferdinando Orengo
Enzo Coraluppi
Elda Moizo
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.)
Tulalip Consultoria Comercial SU
Original Assignee
Minnesota Mining and Manufacturing Co
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 Minnesota Mining and Manufacturing Co filed Critical Minnesota Mining and Manufacturing Co
Publication of EP0600308A1 publication Critical patent/EP0600308A1/fr
Application granted granted Critical
Publication of EP0600308B1 publication Critical patent/EP0600308B1/fr
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
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C1/00—Photosensitive materials
    • G03C1/005—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein
    • G03C1/06—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein with non-macromolecular additives
    • G03C1/34—Fog-inhibitors; Stabilisers; Agents inhibiting latent image regression
    • G03C1/346—Organic derivatives of bivalent sulfur, selenium or tellurium
    • 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
    • G03C7/00—Multicolour photographic processes or agents therefor; Regeneration of such processing agents; Photosensitive materials for multicolour processes
    • G03C7/30—Colour processes using colour-coupling substances; Materials therefor; Preparing or processing such materials
    • G03C7/392—Additives
    • G03C7/39208—Organic compounds
    • G03C7/3924—Heterocyclic
    • G03C7/39244—Heterocyclic the nucleus containing only nitrogen as hetero atoms
    • G03C7/3926—Heterocyclic the nucleus containing only nitrogen as hetero atoms four or more nitrogen atoms
    • 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
    • G03C7/00—Multicolour photographic processes or agents therefor; Regeneration of such processing agents; Photosensitive materials for multicolour processes
    • G03C7/30—Colour processes using colour-coupling substances; Materials therefor; Preparing or processing such materials
    • G03C7/407—Development processes or agents 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
    • G03C7/00—Multicolour photographic processes or agents therefor; Regeneration of such processing agents; Photosensitive materials for multicolour processes
    • G03C7/30—Colour processes using colour-coupling substances; Materials therefor; Preparing or processing such materials
    • G03C7/407—Development processes or agents therefor
    • G03C7/413—Developers

Definitions

  • the present invention relates to a process for developing color photographic light-sensitive materials in the presence of a compound which prevents processing variability.
  • a photographic light-sensitive color image is obtained through a process which comprises developing in a developing bath the exposed light-sensitive silver halide material, then treating the developed material in bleach and fix baths to remove the metallic salt and the remaining silver salts.
  • color development fog The increase in dye density of unexposed areas in color negative photographic light-sensitive materials during color development is called "color development fog". This phenomenon occurs more readily if the material is stored at a higher temperature or humidity, or if the material is stored for a long period.
  • Fog formation can be reduced by incorporating an antiffoging agent into the light-sensitive material or into the development solution.
  • US patent No. 4,418,140 describes a process for developing color photographic light-sensitive materials in presence of a 1-phenyl-5-mercaptotetrazole antiffoging compound substituted on the phenyl ring with sulfonamido groups.
  • a deleterious increase in dye density in color photographic light-sensitive materials occurs not only in the unexposed areas but also in the exposed areas.
  • This problem is called "process variability": it is particularly relevant when the color photographic light-sensitive material is developed by automatic processors having a developer solution replenishment rate which is too high.
  • developer solutions of said automatic processors need from time to time to be supplied with a replenisher solution to reestablish standard working conditions. It is a common practice to add a larger amount of replenishment solution than necessary. This provides a more active developer solution that produces an image having higher speed and higher contrast.
  • process variability is also noted when the pH of the bleach bath is higher than the standard condition. Sometimes, the pH value of the bleach bath become higher than usual values due to the presence in the bleach bath of some impurities received from the developing bath.
  • the standard pH value of the bleach bath is around 5.0-5.5 as described in Manual for Processing Kodacolor Film . When this value is more than 6.0, the "process variability" problem can occur.
  • US patent No. 4,328,302 describes a lithographic light-sensitive material which scarcely exhibits colored fringe and black pepper and forms halftone dots of good quality whether a fresh or an exhausted developer is used for processing the lithographic material.
  • Said lithographic material contains a substituted 1-phenyl-5-mercapotetrazole compound, carrying on the phenyl ring a carbonamido group, an hydroxy group, a sulphonamido group and the like.
  • US patent 4,717,648 describes a process for processing a light-sensitive color reversal photographic material which comprises developing the material with a black-and-white developer containing a 1-phenyl-5-mercaptotetrazole.
  • a black-and-white developer containing a 1-phenyl-5-mercaptotetrazole.
  • substituents of the phenyl group there are halogen, alkyl, sulfonamido, alkyloxycarbonyl, carboxy groups, and the like.
  • the present invention relates to a process for developing a color photographic light-sensitive material which comprises exposing a color photographic light-sensitive material, color developing the exposed light-sensitive material in a developing bath, and then treating the light-sensitive material in a bleach bath, wherein said developing bath contains at least 5 grams/liter of developing agent and/or the pH value of said bleach bath is at least 6.0, said photographic material containing, before being imagewise exposed, a compound represented by the general formula (I): wherein R is NR1R2 or O-R3, wherein R1 and R2, being the same or different, each represents a hydrogen atom or an alkyl group (preferably an alkyl group having up to 6 carbon atoms); and R3 represents an alkyl group (preferably an alkyl group having up to 4 carbon atoms).
  • the present invention refers to a light-sensitive silver halide color photographic element which comprises a support base and, coated thereon, at least one surface latent image negative type emulsion layer, at least one of said silver halide emulsion layers containing, before being imagewise exposed, a compound represented by general formula (I): wherein R is NR1R2 or O-R3, wherein R1 and R2, being the same or different, each represents a hydrogen atom or an alkyl group (preferably an alkyl group having up to 6 carbon atoms); and R3 represents an alkyl group (preferably an alkyl group having up to 4 carbon atoms).
  • R is NR1R2 or O-R3, wherein R1 and R2, being the same or different, each represents a hydrogen atom or an alkyl group (preferably an alkyl group having up to 6 carbon atoms); and R3 represents an alkyl group (preferably an alkyl group having up to 4 carbon atoms).
  • the present invention relates to a process for developing a color photographic light-sensitive material which comprises exposing a color photographic light-sensitive silver halide material, color developing the exposed light-sensitive material in a developing bath, and then treating the light-sensitive material in a bleach bath, wherein said developing bath contains at least 5 grams/liter of developing agent and/or the pH value of said bleach bath is at least 6.0, said photographic material containing, before being imagewise exposed, a compound represented by the general formula (I): wherein R is NR1R2 or O-R3, wherein R1 and R2, being the same or different, each represents a hydrogen atom or an alkyl group (preferably an alkyl group having up to 6 carbon atoms, such as methyl, ethyl, butyl, chloromethyl, trifluoromethyl, 2-hydroxy-ethyl, etc..); and R3 represents an alkyl group (preferably an alkyl group having up to 4 carbon atoms, such as methyl, ethyl, butyl, chloro
  • the present invention relates to a process for developing a color photographic light-sensitive silver halide material as described above, wherein said developing bath contains at least 5 up to 7 grams/liter of developing agent and/or wherein the pH value of said bleach bath is at least 6.0 up to 7.5.
  • the present invention relates to a process for developing a color photographic light-sensitive material as described above, wherein said light-sensitive material comprises a support and coated thereon at least a blue-sensitive silver halide emulsion layer, at least a green-sensitive silver halide emulsion layer and at least a red-sensitive silver halide emulsion layer.
  • said compound represented by the general formula (I) is contained in a green-sensitive silver halide emulsion layer. More particularly, said compound represented by the general formula (I) is present in an amount from 10 to 300 micromoles per mole of the total silver contained in such light-sensitive material, more preferably from 50 to 200 micromoles per silver mole.
  • alkyl group includes not only such alkyl moieties as methyl, ethyl, octyl, stearyl, etc., but also such moieties bearing substituent groups such as halogen, cyano, hydroxyl, nitro, amine, carboxylate, etc.
  • alkyl moiety includes only methyl, ethyl, octyl, stearyl, cyclohexyl, etc.
  • the present invention relates to a process for developing a color photographic light-sensitive material which comprises exposing a color photographic light-sensitive material, color developing the exposed light-sensitive material in a developing bath, and then treating the light-sensitive material in a bleach bath, wherein said developing bath contains at least 5 grams/liter of developing agent and/or the pH value of said bleach bath is at least 6.0, said photographic material containing a compound represented by the general formula (II): wherein R4 is NH2 or O-R5, wherein R5 is a low alkyl group up to 3 carbon atoms, such as methyl, ethyl, butyl, chloromethyl, trifluoromethyl, etc.
  • group CO-R or CO-R4 of previous formulas (I) and (II) may be positioned at any location of the benzene nucleus, it is particularly preferred to be linked at the para-position relative to the carbon atom that is bound to the nitrogen atom of the tetrazole group.
  • the photographic elements used in the present invention are preferably multilayer color elements comprising a blue sensitive or sensitized silver halide emulsion layer associated with yellow dye-forming color couplers, a green sensitized silver halide emulsion layer associated with magenta dye-forming color couplers and a red sensitized silver halide emulsion layer associated with cyan dye-forming color couplers.
  • Each layer can be comprised of a single emulsion layer or of multiple emulsion sub-layers sensitive to a given region of visible spectrum.
  • multilayer materials contain multiple blue, green or red sub-layers, there can be in any case relatively faster and relatively slower sub-layers.
  • the silver halide emulsion used in this invention may be a fine dispersion of silver chloride, silver bromide, silver chloro-bromide, silver iodo-bromide and silver chloro-iodo-bromide in a hydrophilic binder.
  • hydrophilic binder any hydrophilic polymer of those conventionally used in photography can be advantageously employed including gelatin, a gelatin derivative such as acylated gelatin, graft gelatin, etc., albumin, gum arabic, agar agar, a cellulose derivative, such as hydroxyethyl-cellulose, carboxymethyl-cellulose, etc., a synthetic resin, such as polyvinyl alcohol, polyvinylpyrrolidone, polyacrylamide, etc.
  • Preferred silver halides are silver iodo-bromide or silver iodo-bromo-chloride containing 1 to 20 % mole silver iodide.
  • the silver halide grains may have any crystal form such as cubical, octahedral, tabular or a mixed crystal form.
  • the silver halide can have a uniform grain size or a broad grain size distribution. The size of the silver halide ranges from about 0.1 to about 5 ⁇ m.
  • the silver halide grains of the emulsions used in the present invention are capable of forming a surface latent image, instead of those emulsions which form an internal latent image.
  • the silver halide grains forming the surface latent image are at the most used in the photographic elements of the negative type, while the silver halide grains forming an internal latent image, although capable of forming a negative image when they are developed with an internal developer, are generally used with surface developers to form direct positive images.
  • the difference among the silver halide grains forming an internal latent image is well-known in the art. Generally, some additional ingredients or processings are required in the preparation of silver halide grains capable of preferably forming an internal rather than a surface latent image.
  • the silver halide emulsion used in the present invention can be prepared using a single-jet method, a double-jet method, or a combination of these methods or can be matured using, for instance, an ammonia method, a neutralization method, an acid method, etc.
  • the emulsions which can be used in the present invention can be chemically and optically sensitized as described in Research Disclosure 17643, III and IV, December 1978; they can contain optical brighteners, antifogging agents and stabilizers, filtering and antihalo dyes, hardeners, coating aids, plasticizers and lubricants and other auxiliary substances, as for instance described in Research Disclosure 17643, V, VI, VIII, X, XI and XII, December 1978.
  • the layers of the photographic emulsion and the layers of the photographic element con contain various colloids, alone or in combination, such as binding materials, as for instance described in Research Disclosure 17643, IX, December 1978.
  • the above described emulsions can be coated onto several support bases (cellulose triacetate, paper, resin-coated paper, polyester included) by adopting various methods, as described in Research Disclosure 17643, XV and XVII, December 1978.
  • the process of the present invention for developing a color photographic light-sensitive material comprises at least a color developing bath and, optionally, a prehardening bath, a neutralizing bath, a first (black and white) developing bath, etc.
  • a color developing bath and, optionally, a prehardening bath, a neutralizing bath, a first (black and white) developing bath, etc.
  • These baths are well known in the art and are described for instance in Research Disclosure 17643, 1978.
  • the silver halide emulsion layers exposed to light radiation to form a latent image are developed with a compound of the aromatic amine type in the presence of the color couplers.
  • the aromatic primary amine color developing agent used in the photographic color developing composition can be any of known compounds of the class of p-phenylendiamine derivatives, widely employed in various color photographic process.
  • Particularly useful color developing agents are the p-phenylendiamine derivatives, especially the N,N-dialkyl-p-phenylene diamine derivatives wherein the alkyl groups or the aromatic nucleus can be substituted or not substituted.
  • Examples of p-phenylene diamine developers include the salts of: N,N-diethyl-p-phenylendiamine, 2-amino-5-diethylamino-toluene, 4-amino-N-ethyl-N-( ⁇ -methanesulphonamidoethyl)-m-toluidine, 4-amino-3-methyl-N-ethyl-N-( ⁇ -hydroxyethyl)-aniline, 4-amino-3-( ⁇ -methylsulfonamidoethyl)-N,N-diethylaniline, 4-amino-N,N-diethyl-3-(N'-methyl- ⁇ -methylsulfonamido)-aniline, N-ethyl-N-methoxyethyl-3-methyl-p-phenylenediamine and the like, as described, for instance, in US patents No. 2,552,241; 2,556,271; 3,656,950 and
  • Examples of commonly used developing agents of the p-phenylene diamine salt type are: 2-amino-5-diethylaminotoluene hydrochloride (generally known as CD2 and used in the developing solutions for color positive photographic material), 4-amino-N-ethyl-N-( ⁇ -methanesulfonamidoethyl)-m-toluidine sesquisulfate monohydrate (generally known as CD3 and used in the developing solution for photographic papers and color reversal materials) and 4-amino-3-methyl-N-ethyl-N-( ⁇ -hydroxyethyl)-aniline sulfate (generally known as CD4 and used in the developing solutions for color negative photographic materials).
  • CD2 2-amino-5-diethylaminotoluene hydrochloride
  • CD3 4-amino-N-ethyl-N-( ⁇ -methanesulfonamidoethyl)-m-toluidine ses
  • the quantity of said color developing agents generally used is from about 4.35-4.65 grams/liter as described in Manual for Processing Kodacolor II Film , August 1983.
  • the imagewise developed metallic silver and the remaining silver salts generally must be removed from the photographic material. This is performed in separate bleach and fix baths or in a single bath, called blix, which bleaches and fixes the image in a single step.
  • the standard pH value of the bleach bath is around 5.0-5.5 as described in Manual for Processing Kodacolor Film ; the bleach bath is a water solution containing an oxidizing agent, normally a complex salt on an alkali metal or of ammonium and of trivalent iron with an organic acid, e. g. EDTA.Fe.NH4, wherein EDTA is the ethylenediaminotetracetic acid.
  • this bath is continously aired to oxidize the divalent iron which forms while bleaching the silver image and regenerated, as known in the art, to maintain the bleach effectiveness.
  • the bad performance of these operations may cause the drawback of the loss of cyan density of the dyes.
  • the bleach bath can contain known fixing agents, such as for example ammonium or alkali metal thiosulfates.
  • Both bleach and fix baths can contain other additives, e. g. polyalkyleneoxide derivatives, as described in GB patent 933,008 in order to increase the effectiveness of the bath, or thioethers known as bleach accelerators.
  • Film 1 was prepared by coating a cellulose triacetate support base, subbed with gelatin, with the following layers in the following order:
  • Film 2 was prepared as film 1, adding to layer (g) 77.18 micromol/mol total silver contained in the light-sensitive material of the compound (1) of the present invention.
  • Film 3 was prepared as film 1, adding to layer (g) 115.70 micromol/mol total silver contained in the light-sensitive material of the compound (1) of the present invention.
  • Film 4 was prepared as film 1, adding to layer (g) 154.30 micromol/mol total silver contained in the light-sensitive material of the compound (1) of the present invention.
  • Film 5 was prepared as film 1, adding to layer (g) 76.99 micromol/mol total silver contained in the light-sensitive material of the compound (3) of the present invention.
  • Film 6 was prepared as film 1, adding to layer (g) 77.18 mmol/mol Ag of the compound A.
  • Film 7 was prepared as film 1, adding to layer (g) 77.18 micromol/mol total silver contained in the light-sensitive material of the compound B.
  • Film 8 was prepared as film 1, adding to layer (g) 77.18 micromol/mol total silver contained in the light-sensitive material of the compound C.
  • Samples of each film were exposed for 1/20 of a second to a light source having a color temperature of 5,500 Kelvin through a WRATTENTM W99 filter and an optical step wedge (selective exposure). All the exposed samples were developed in a standard type C41 process (Process A) as described in British Journal of Photography, July 12, 1974, pp. 597-598. Said standard type C41 process contained an amount of 4.5 grams for liter of developing agent CD4. The pH value of the bleach bath of said C41 process was 5.20.
  • Table 1 compares the photographic results in terms of Dmin and color balance (that is the difference between Dmax-magenta and Dmax-cyan values) obtained through Process A, respectively indicated as Dmin1 and CB1, with the same data obtained through Process B, respectively indicated as Dmin2 and CB2.
  • the differences between the Dmin2 and Dmin1 values and the CB2 and CB1 values are, respectively, indicated as ⁇ Dmin and ⁇ CB.
  • Table 1 shows that, when a developer solution contains an amount of developing agent higher than standard conditions, the films 2 to 5, containing a compound useful in the process of the present invention, present a low increase in the Dmin value compared with the reference film 1 that does not contain any compound to prevent process variability and also with the films 6 to 8 containing a compound having different substituents on the phenyl ring.
  • the films 2 to 5 present also good photographic properties in terms of color balance compared with the reference film and with the films 6 to 8 not useful in the present invention.
  • Table 2 reports the differences of the Dmin values obtained by the films treated at various level of pH of the bleach bath with reference to the standard Dmin value (0.50) obtained when the films are processed in standard working conditions (pH of bleach bath 5.20).
  • Table 2 shows that film 3 of the present invention presents a low increase in the Dmin value at pH levels higher than the usual standard conditions, with respect to the reference film 1.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)
EP93118552A 1992-12-04 1993-11-18 Eléments photographiques en couleur sensible à la lumière et procédé pour les développer Expired - Lifetime EP0600308B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI922775A IT1256620B (it) 1992-12-04 1992-12-04 Materiali fotografici a colori sensibili alla luce e procedimento per svilupparli
ITMI922775 1992-12-04

Publications (2)

Publication Number Publication Date
EP0600308A1 true EP0600308A1 (fr) 1994-06-08
EP0600308B1 EP0600308B1 (fr) 1999-09-01

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EP93118552A Expired - Lifetime EP0600308B1 (fr) 1992-12-04 1993-11-18 Eléments photographiques en couleur sensible à la lumière et procédé pour les développer

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EP (1) EP0600308B1 (fr)
DE (1) DE69326219T2 (fr)
IT (1) IT1256620B (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0702265A1 (fr) * 1994-09-13 1996-03-20 Minnesota Mining And Manufacturing Company Matériau photographique à l'halogénure d'argent comprenant un composé mercaptotétrazole
EP0709722A1 (fr) * 1994-10-26 1996-05-01 Minnesota Mining And Manufacturing Company Matériau photographique à l'halogénure d'argent et méthode pour stabiliser une émulsion à base d'halogénure d'argent sensible à la lumière

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0208146A2 (fr) * 1985-06-07 1987-01-14 Fuji Photo Film Co., Ltd. Procédé de traitement d'un matériau photographique couleur à l'halogénure d'argent
EP0246624A2 (fr) * 1986-05-19 1987-11-25 Fuji Photo Film Co., Ltd. Procédé de préparation d'une image couleur
EP0255783A2 (fr) * 1986-07-31 1988-02-10 Konica Corporation Matériau photographique à l'halogénure d'argent sensible à la lumière, utilisable pour traitement rapide
EP0255785A2 (fr) * 1986-08-01 1988-02-10 Konica Corporation Matériau photographique à l'halogénure d'argent sensible à la lumière, excellent en stabilité pendant le traitement
EP0367227A2 (fr) * 1988-11-01 1990-05-09 Fuji Photo Film Co., Ltd. Matériau photographique couleur à l'halogénure d'argent
EP0462579A1 (fr) * 1990-06-18 1991-12-27 Konica Corporation Méthode de préparation d'une émulsion à l'halogénure d'argent

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0208146A2 (fr) * 1985-06-07 1987-01-14 Fuji Photo Film Co., Ltd. Procédé de traitement d'un matériau photographique couleur à l'halogénure d'argent
EP0246624A2 (fr) * 1986-05-19 1987-11-25 Fuji Photo Film Co., Ltd. Procédé de préparation d'une image couleur
EP0255783A2 (fr) * 1986-07-31 1988-02-10 Konica Corporation Matériau photographique à l'halogénure d'argent sensible à la lumière, utilisable pour traitement rapide
EP0255785A2 (fr) * 1986-08-01 1988-02-10 Konica Corporation Matériau photographique à l'halogénure d'argent sensible à la lumière, excellent en stabilité pendant le traitement
EP0367227A2 (fr) * 1988-11-01 1990-05-09 Fuji Photo Film Co., Ltd. Matériau photographique couleur à l'halogénure d'argent
EP0462579A1 (fr) * 1990-06-18 1991-12-27 Konica Corporation Méthode de préparation d'une émulsion à l'halogénure d'argent

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0702265A1 (fr) * 1994-09-13 1996-03-20 Minnesota Mining And Manufacturing Company Matériau photographique à l'halogénure d'argent comprenant un composé mercaptotétrazole
US5667953A (en) * 1994-09-13 1997-09-16 Minnesota Mining And Manufacturing Company Silver halide photographic material comprising mercaptotetrazole compound(s)
EP0709722A1 (fr) * 1994-10-26 1996-05-01 Minnesota Mining And Manufacturing Company Matériau photographique à l'halogénure d'argent et méthode pour stabiliser une émulsion à base d'halogénure d'argent sensible à la lumière

Also Published As

Publication number Publication date
DE69326219D1 (de) 1999-10-07
DE69326219T2 (de) 2000-04-13
EP0600308B1 (fr) 1999-09-01
ITMI922775A1 (it) 1994-06-04
IT1256620B (it) 1995-12-12
ITMI922775A0 (it) 1992-12-04

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