Developing Or Fixing Agents Containing For Liquid Processing Patents (Class 430/566)
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Patent number: 5460933Abstract: Undesirable particle growth of particles comprising a hydrazide oxidized developer in a photographic dispersion can be significantly reduced when the hydrazide scavenger is in the form of a dispersion of crystalline solid particles dispersed in an aqueous medium. The dispersion is prepared by milling crystalline solid particles of the scavenger in an aqueous medium in the presence of a dispersing agent and in the substantial absence of an organic solvent.Type: GrantFiled: February 18, 1994Date of Patent: October 24, 1995Assignee: Eastman Kodak CompanyInventors: Mary C. Brick, Norma B. Platt, Paul L. Zengerle, Jeffery L. Hall
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Patent number: 5457014Abstract: Melt crystallization of a photographic composition containing dispersed particles of a filter dye and dispersed particles of oxidized developer scavenger, in particular a hydrazide or a disulfonamidophenol oxidized developer scavenger, is inhibited by dispersing the oxidized developer scavenger in the composition in the form of particles comprising the oxidized developer scavenger dispersed or dissolved in an organic solvent selected such that the following relationship is satisfied:6.65+10.0 A-1.53 B+0.11 B.sup.2 -0.99 AB.ltoreq.4.0wherein A is the weight ratio of organic solvent to oxidized developer scavenger; and B is the log P of the organic solvent.Type: GrantFiled: May 18, 1994Date of Patent: October 10, 1995Assignee: Eastman Kodak CompanyInventors: Paul L. Zengerle, Glenn M. Brown, John B. Rieger
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Patent number: 5455155Abstract: Undesirable dye stain in a photographic element containing a disulfonamidophenol oxidized developer scavenger can be significantly reduced when the disulfonamidophenol scavenger is in the form of a crystalline solid particle dispersion prepared by milling crystalline solid particles of the scavenger in an aqueous medium in the presence of a dispersing agent and in the substantial absence of an organic solvent.Type: GrantFiled: February 18, 1994Date of Patent: October 3, 1995Assignee: Eastman Kodak CompanyInventors: Mary C. Brick, Norma B. Platt, Paul L. Zengerle, Jeffery L. Hall
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Patent number: 5427891Abstract: Disclosed is a silver halide photographic material comprising:at least one silver halide emulsion layer;a hydrazine derivative; andat least one hydroquinone derivative represented by general formula (LI) or (LII): ##STR1## wherein G represents hydrogen atom or an alkyl group having 1 to 17 carbon atoms;n represents an integer of 1 to 5; andR.sub.1 to R.sub.10 each represent a hydrogen atom, an alkyl group, an aryl group, a hydroxyl group, an alkoxy group, an aryloxy group, a halogen atom, a primary, secondary or tertiary amino group, a carbonamido group, a sulfonamido group, a carbamoyl group, a sulfamoyl group, an alkylthio group, an arylthio group, an alkylsulfonyl group, an arylsulfonyl group, a carboxyl group or a sulfo group.Type: GrantFiled: June 27, 1994Date of Patent: June 27, 1995Assignee: Fuji Photo Film Co., Ltd.Inventors: Masato Hirano, Nobutaka Ohki, Nobuaki Inoue, Tetsuo Yamaguchi
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Patent number: 5415991Abstract: A silver halide photographic material comprises at least one light-sensitive emulsion layer containing a silver halide emulsion on a support. The light-sensitive emulsion layer comprises (a) a silver halide emulsion containing silver halide grains having a silver chloride content of 90 mol % or more, in some cases 95 mol % or more, and (b) at least one compound represented by formula (I), (II) or (III): ##STR1## in which the variables are as defined in the specification. In some embodiments of the invention, the silver halide emulsion (a) may be sensitized with a selenium, gold or iridium compound. Also, in some embodiments of the invention, the silver halide grains are substantially iodide-free and have a localized phase with a silver bromide content of 10% or more in the vicinity of the grain surface.Type: GrantFiled: November 10, 1993Date of Patent: May 16, 1995Assignee: Fuji Photo Film Co., Ltd.Inventors: Akira Kase, Naoto Ohshima, Nobutaka Ohki
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Patent number: 5395732Abstract: A silver halide photographic material is disclosed, which comprises (a) at least one light-sensitive silver halide emulsion layer containing a hydrazine derivative and (b) a hydrophilic colloid layer which is different from the light-sensitive silver halide emulsion layer and which contains a redox compound capable of releasing a development inhibitor as a result of oxidation.Type: GrantFiled: June 4, 1992Date of Patent: March 7, 1995Assignee: Fuji Photo Film Co., Ltd.Inventors: Kazunobu Katoh, Morio Yagihara, Takahiro Goto
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Patent number: 5384237Abstract: A thermal-dye-bleach construction comprising a dye in association with a thermal dye-bleaching agent of general formula I: ##STR1## wherein: each of R.sup.a and R.sup.b are individually selected from: hydrogen, an alkyl group, an alkenyl group, a cycloalkyl group, an aralkyl group, an aryl group, and a heterocyclic group, and preferably, both R.sup.a and R.sup.b represent hydrogen;p is one or two, and when p is one, Z is a monovalent group selected from: an akyl group, a cycloalkyl group, an alkenyl group, an alkynyl group, an aralkyl group, an aryl group, and a heterocyclic group, and when p is two, Z is a divalent group selected from: an alkylene group, an arylene group, an alkenylene group, an alkynylene group, an aralkylene group, a cycloalkene group, and a heterocyclic group; and,M.sup.+ is a cation which will not react with a carbanion generated from the thermal-carbanion-generating agent in such manner as to render the carbanion ineffective as a bleaching agent for the dye.Type: GrantFiled: January 25, 1994Date of Patent: January 24, 1995Assignee: Minnesota Mining and Manufacturing CompanyInventors: Dian E. Stevenson, Mark P. Kirk, Sylvia A. Farnum, William C. Frank, Randall H. Helland, Jonathan P., Kitchin, Roger A. Mader, Mark B. Mizen, Richard A. Newmark, William D. Ramsden, Kumars Sakizadeh, Terence D. Spawn, George V. Tiers
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Patent number: 5360702Abstract: Melt crystallization of a photographic composition containing dispersed particles of a filter dye and dispersed particles of oxidized developer scavenger, in particular a hydrazide or a disulfonamidophenol oxidized developer scavenger, is inhibited by dispersing the oxidized developer scavenger in the composition in the form of particles comprising the oxidized developer scavenger dispersed or dissolved in an organic solvent selected such that the following relationship is satisfied:6.65+10.0 A-1.53 B+0.11 B.sup.2 -0.99 AB<4.0wherein A is the weight ratio of organic solvent to oxidized developer scavenger; and B is the log P of the organic solvent.Type: GrantFiled: January 26, 1993Date of Patent: November 1, 1994Assignee: Eastman Kodak CompanyInventors: Paul L. Zengerle, Glenn M. Brown, John B. Rieger
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Patent number: 5338644Abstract: Hydroquinones form stable hydrogen-bonded complexes with N,N,N',N'-tetrasubstituted diamides of aromatic dicarboxylic acids in which two carboxyl groups are arranged para to one another on the same phenyl ring. These complexes are useful in rendering the hydroquinones more water-dispersible to assist their incorporation into photographic products. Also, the diamides may be incorporated into photographic products to reduce or eliminate various problems associated with hydroquinones, including migration of hydroquinones within the product during storage and the discoloration of images on storage due to oxidation of hydroquinone present in an image-receiving element of the photographic product.Type: GrantFiled: December 23, 1992Date of Patent: August 16, 1994Assignee: Polaroid CorporationInventors: Lloyd D. Taylor, John C. Warner
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Patent number: 5326680Abstract: A silver halide color photographic light-sensitive material having at least one light-sensitive silver halide emulsion layer formed on a support wherein the light-sensitive material contains a compound represented by the following general formula (I): ##STR1## wherein A is a coupler residual or an oxidation-reduction group, X.sub.1 is an oxygen atom or a sulfur atom, X.sub.2 is an oxygen atom, a sulfur atom or NX.sub.6 group, W is a carbon atom or a sulfur atom, X.sub.3, X.sub.4, X.sub.5 and X.sub.6 are each a hydrogen atom or an organic residual, any two of X.sub.3, X.sub.4 and X.sub.5 can be bivalent groups which form a ring, PUG is a photographically useful group capable of bonding at a hetero-atom and, in the formula (I), n.sub.1 is 1 if W is a carbon atom, and either 1 or 2 if W is a sulfur atom. If n.sub.1 is 2, two X.sub.1 can either be identical or different. On the other hand, n.sub.2 is either 1 or 2. If n.sub.2 is 2, two X.sub.3, two X.sub.4, and two x.sub.5 are either identical or different.Type: GrantFiled: May 19, 1992Date of Patent: July 5, 1994Assignee: Fuji Photo Film Co., Ltd.Inventors: Atsuhiro Ohkawa, Tatsuhiko Obayashi, Keiji Mihayashi
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Patent number: 5310634Abstract: A p-phenylenediamine series color developing agent or a precursor thereof having a substituent A at the ortho-position; Substituent A: ##STR1## wherein R.sup.1 represents a hydrogen atom or an alkyl group and X represents --O--R.sup.7 or ##STR2## wherein R.sup.7 represents an alkyl group, an aryl group, or a heterocyclic ring and R.sup.8 and and R.sup.9, which may be the same or different, each represents a hydrogen atom, an alkyl group, an aryl group, or a heterocyclic ring, R.sup.8 and R.sup.9 may combine with each other to form a heterocyclic ring, and a process for forming an image which comprises imagewise exposing a silver halide color photographic material and thereafter color developing the color photographic material in the presence of a p-phenylenediamine series color developing agent or a precursor thereof having the aforesaid substituent A.Type: GrantFiled: October 30, 1991Date of Patent: May 10, 1994Assignee: Fuji Photo Film Co., Ltd.Inventors: Hisashi Mikoshiba, Mitsugu Tanaka, Kei Sakanoue
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Patent number: 5306605Abstract: A photographic recording material comprising a carrier and at least one photosensitive silver halide emulsion layer, a non-photosensitive layer and optional conventional intermediate and protective layers, characterised in that the photographic recording material (1) contains at least one silver halide emulsion layer having a silver iodide content .gtoreq.3 mol % and an average grain diameter .ltoreq.0.4 .mu.m, and (2), at least in one layer, contains a compound having the formula I ##STR1## in which R.sub.1, R.sub.2 and R.sub.3 denote hydrogen, an optionally substituted hydrocarbon radical, an optionally substituted alkylthio, alkyloxy or arylthio radical, an optionally substituted amino group, OH or halogen or R.sup.1 and R.sup.2 together denote the radical for completing a carbocyclic or heterocyclic ring,R.sub.4, R.sub.5 denote hydrogen, an optionally substituted alkyl or aryl radical, or an optionally substituted heterocyclic radical,R.sub.6, R.sub.Type: GrantFiled: April 5, 1993Date of Patent: April 26, 1994Assignee: AGFA-Gevaert AGInventors: Heinrich Odenwalder, Lothar Rosenhahn, Thomas Stetzer
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Patent number: 5302498Abstract: A photographic element including a support bearing at least one photographic silver halide emulsion layer and bearing on the opposite side of the support a layer containing at least one blocked developing agent or precursor thereof provides automatic developing agent replenishment of the developing bath upon processing.Type: GrantFiled: September 29, 1992Date of Patent: April 12, 1994Assignee: Eastman Kodak CompanyInventors: David T. Southby, John Texter, Timothy Glover
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Patent number: 5284739Abstract: Photographic materials having incorporated sulphonyhdrazide color developing agents. Such photographic materials have at least two color-forming units, each of which has a silver halide emulsion layer and a photographic coupler. A ballasted heterocyclic sulphonhydrazide color developing agent is present in the material in droplets of a high boiling point solvent. A method of forming a photographic color image using such materials is also provided.Type: GrantFiled: November 10, 1992Date of Patent: February 8, 1994Assignee: Eastman Kodak CompanyInventors: David Clarke, John D. Goddard, Paul L. R. Stanley, Nigel E. Milner
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Patent number: 5284732Abstract: A silver halide light-sensitive material containing a hydrazine compound represented by formula (I): ##STR1## wherein L.sup.1 represents a single bond, --O--, --S--, --NR.sup.6 --, --CO--, SO.sub.2 --, --P(O) (G.sup.2 R.sup.6)-- or a combination thereof; L.sup.2 represents --SO.sub.2 NR.sup.6 --, --NR.sup.6 SO.sub.2 NR.sup.6 --, --CONR.sup.6 --, --NR.sup.6 CONR.sup.6 -- or --G.sup.2 P(O) (G.sup.2 R.sup.6)NR.sup.6 --; G.sup.1 represents --CO--, --SO.sub.2 --, --SO--, --COCO--, a thiocarbonyl group, an iminomethylene group or --P(O) (G.sup.2 R.sup.6)--; G.sup.2 represents a single bond, --O-- or --NR.sup.6 --; R.sup.1 represents an aliphatic group or an aromatic group; R.sup.2, R.sup.3, and R.sup.4 each represent a divalent aliphatic group or a divalent aromatic group; R.sup.5 represents a hydrogen atom, an aliphatic group, an aromatic group, an alkoxy group, an aryloxy group or an amino group; R.sup.6 represents a hydrogen atom, an aliphatic group or an aromatic group; m represents 0 or 1; and X.sup.Type: GrantFiled: June 9, 1993Date of Patent: February 8, 1994Assignee: Fuji Photo Film Co., Ltd.Inventors: Kazumi Nii, Toshihide Ezoe
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Patent number: 5283158Abstract: Disclosed is a silver halide photographic light-sensitive material comprising a support having thereon at least one silver halide emulsion layer, a hydrazine compound is contained in said silver emulsion layer or at least one of other layers, wherein said material contains at least one compound represented by Formula I or Formula II, ##STR1## wherein R.sub.1 and R.sub.2 each independently represent an alkyl group, an alkenyl group or an alkynyl group respectively; R.sub.1 and R.sub.2 may form a ring; R.sub.3 represents a hydrogen atom, an alkyl group, an alkenyl group, an alkynyl group, an aryl group or a heterocyclic group; L.sub.1 represents a divalent linking group; X represents a --[S--L.sub.2 --Y--(L.sub.3)n]-- group or a [--(L.sub.3)n--Y--L.sub.2 --S--]-- group, L.sub.2 represents an alkylene group or an alkenylene group, Y represents a carbonyl group, a sulfonyl group, a sulfoxy group, a phosphoryl group, L.sub.3 represents ##STR2## wherein Z.sub.1, Z.sub.2 and Z.sub.Type: GrantFiled: October 19, 1992Date of Patent: February 1, 1994Assignee: Konica CorporationInventors: Akira Onodera, Yasushi Usagawa
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Patent number: 5283161Abstract: A method for rapidly processing a silver halide photographic material comprising a support having thereon at least one light-sensitive silver halide emulsion layer and a silver halide photographic material therefor are disclosed. The total amount of binder on one side of the support is not more than 3.0 g/m.sup.2, the photographic materials contains in at least one layer at least one compound selected from the group consisting of compounds represented by formulae (I) and (II): ##STR1## wherein X.sub.1, X.sub.2, A, R.sub.11, R.sub.12, R.sub.13, R.sub.14, R.sub.15, and R.sub.16 are defined in the specification. Processing may be effected in a total processing time of from 15 to 45 seconds. Pressure sensitivity can be reduced without reducing photographic speed.Type: GrantFiled: September 11, 1991Date of Patent: February 1, 1994Assignee: Fuji Photo Film Co., Ltd.Inventors: Ichizo Toya, Mikizo Kuwabara, Hiroshi Kawamoto
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Patent number: 5283162Abstract: There are described photographic elements containing novel release compounds which release a blocked photographically useful group, such as a blocked development inhibitor. The blocking group is removed during processing as a result of reaction with sulfite ion contained in one of the processing baths.Type: GrantFiled: May 29, 1992Date of Patent: February 1, 1994Assignee: Eastman Kodak CompanyInventors: Daniel L. Kapp, Wojciech Slusarek, David T. Southby
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Patent number: 5262271Abstract: According to the present invention a method for producing a negative image is provided, comprising the following steps:image-wise exposing an imaging element comprising on a support, a light-sensitive silver halide emulsion layer comprising silver halide grains having an average volume of not more than 0.02 .mu.m.sup.3 and a layer containing non-light-sensitive water insoluble silver salt, to produce a latent image in said layer of light-sensitive silver halidedeveloping said latent image to produce physical development nuclei of silverdissolving the non-light-sensitive silver salts using a silver salt complexing agent andallowing the thus formed silver salt complexes to diffuse to the layer containing said image-wise formed physical development nuclei of silver to image-wise deposit and develop said silver salt complexes on said image-wise formed physical development nuclei of silver in the presence of (a) developing agent(s).Type: GrantFiled: October 10, 1991Date of Patent: November 16, 1993Assignee: AGFA-Gevaert, N.V.Inventors: Jean-Pierre D. Tahon, Wilhelmus Janssens
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Patent number: 5256525Abstract: A photographic element is disclosed including a support bearing at least one photographic silver halide emulsion layer and at least one non-photosensitive layer between the emulsion layer and the support, wherein the non-photosensitive layer comprises at least one blocked developing agent.Type: GrantFiled: December 19, 1991Date of Patent: October 26, 1993Assignee: Eastman Kodak CompanyInventors: David T. Southby, Jared B. Mooberry, John Texter, John L. Pawlak
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Patent number: 5252449Abstract: A photographic silver halide emulsion comprising silver halide grains having a chloride content of at least 90 mole percent and a rhodium salt, wherein said grains have been sensitized with a black and white developing agent, provides a substantial improvement in bright room tolerance as compared to emulsions sensitized with more conventional sensitizing agents, without loss of speed or contrast. A process for improving the bright room tolerance of a photographic emulsion comprising silver halide grains having a chloride content of at least 90 mole percent and a rhodium salt comprises the step of sensitizing the grains with a black and white developing agent.Type: GrantFiled: September 25, 1992Date of Patent: October 12, 1993Assignee: E. I. du Pont de Nemours and CompanyInventor: John R. Shock
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Patent number: 5244772Abstract: The present invention features a negative-type, silver halide photographic emulsion containing hydrazides that has reduced scratch sensitivity (i.e., the emulsion will have a reduced tendency to develop black scratches on non-exposed areas). The emulsion will resist developing black scratches due to the introduction to the emulsion of hydroquinone and ascorbate. The stability of the emulsion is further enhanced by the addition of sodium formaldehyde bisulfite.Type: GrantFiled: December 6, 1991Date of Patent: September 14, 1993Assignee: Sun Chemical CorporationInventors: Allan P. Piechowski, Penny M. Mullen, John F. Pilot
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Patent number: 5242783Abstract: A novel blocked photographically useful compound element and process are based on a new blocking group that comprises a beta-ketocarbonyl group that is part of a 5- to 7-member heterocyclic ring containing a hetero-atom not adjacent to the beta-ketocarbonyl group. Such a blocked photographically useful compound provides a photographic material and process enabling more rapid release of the photographically useful group upon processing.Type: GrantFiled: July 23, 1992Date of Patent: September 7, 1993Assignee: Eastman Kodak CompanyInventors: John M. Buchanan, Gary S. Proehl
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Patent number: 5240821Abstract: A dispersion comprising solid particles of a developer precursor having the structureCD--(T).sub.m --Sin whichCD is a silver halide color developer,T is a timing group,m is an integer from 0 to 6, andS is a blocking group,and a vehicle in which the solid particles are insoluble, is disclosed. The dispersion can be incorporated in a photographic element.Type: GrantFiled: December 19, 1991Date of Patent: August 31, 1993Assignee: Eastman Kodak CompanyInventors: John Texter, William B. Travis, Jared B. Mooberry
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Patent number: 5236803Abstract: A color light-sensitive material comprising a support having thereon at least one light-sensitive layer containing light-sensitive silver halide, and further comprising in the at least one light-sensitive layer or any other layer, independently, a binder, a reducible dye-providing compound, and a reducing agent represented by formula (I): ##STR1## wherein X represents --CO-- or --SO.sub.2 --; R.sup.1 and R.sup.2, which may be the same or different, each represents an alkyl group, an aryl group or a heterocyclic group, any of which groups may be substituted; R.sup.3 represents a hydrogen atom, a halogen atom, an aryl group, an acylamino group, an alkoxy group, an aryloxy group, an alkylthio group, an arylthio group, an acyl group, a sulfonyl group, a carbamoyl group or a sulfamoyl group, any of which groups may be substituted; R.sup.2 and R.sup.3 may be combined together to form a carbocyclic ring or a heterocyclic ring; and the reducing agent may be in the form of a dimer or a trimer through R.sup.1 or R.sup.Type: GrantFiled: July 27, 1992Date of Patent: August 17, 1993Assignee: Fuji Photo Film Co., Ltd.Inventors: Michio Ono, Takeshi Nakamine, Hiroyuki Hirai
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Patent number: 5227278Abstract: A positive-working, low silver containing, wash-out element comprises a support, a fogged silver halide emulsion layer optionally containing a colorant, a photopolymer layer coated contiguous to silver halide layer and an abrasion layer containing a conventional, wash-out developing agent coated over the photopolymer layer. A process of making a positive image comprises image-wise exposing the above element to actinic radiation, immersing the element in an aqueous alkaline medium, and washing the element with water.Type: GrantFiled: February 27, 1992Date of Patent: July 13, 1993Assignee: E. I. Du Pont de Nemours and CompanyInventor: Robert P. Held
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Patent number: 5221600Abstract: Certain development inhibitor releasing compounds when incorporated in a photographic element at low levels provide development acceleration. The compounds release silver halide binding groups that are substituted with a group containing an ether oxygen atom and/or an imino nitrogen atom. They are especially useful in high speed color photographic materials.Type: GrantFiled: December 13, 1990Date of Patent: June 22, 1993Assignee: Eastman Kodak CompanyInventors: Richard P. Szajewski, Jerrold N. Poslusny
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Patent number: 5215875Abstract: A color photographic recording material comprising at least one blue-sensitive silver halide emulsion layer containing at least one yellow coupler, at least one green-sensitive silver halide emulsion layer containing at least one magenta coupler and at least one red-sensitive silver halide emulsion layer containing at least one cyan coupler and typical intermediate and protective layers, in which the silver halide coating of all the photosensitive layers, expressed as AgNO.sub.3, amounts to no more than 0.3 g/m.sup.2 and the color-coupler-containing layers contain at least one p-phenylenediamine compound containing at least one primary amino group and at least one ballast group dissolved in hydrophobic oil droplets, can be developed in an environment-friendly manner using an intensifying bath.Type: GrantFiled: June 7, 1991Date of Patent: June 1, 1993Assignee: Agfa Gevaert AktiengesellschaftInventors: Reinhart Matejec, Hans Vetter, Heinrich Odenwalder
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Patent number: 5210012Abstract: A silver halide color photographic material is provided comprising on a support at least one silver halide emulsion layer containing at least one of the compounds represented by formulae (I) to (III): ##STR1## wherein R.sub.11 represents ##STR2## in which R.sub.13 represents an alkyl, aryl or heterocyclic group, and R.sub.14 and R.sub.15 each represents hydrogen, alkyl group or aryl group; R.sub.12 represents a substituent having a Hammett's substituent constant .sigma.p of 0.3 or less; n represents an integer 0 to 2, and when n is 2, the two R.sub.12 's may be the same or different; B represents a group which releases PUG after being separated from a hydroquinone nucleus; PUG represents a development inhibitor; l represents an integer; and A and A' each represents hydrogen or a group capable of being removed by an alkali; R.sub.11 and R.sub.12, R.sub.11 and A or A', R.sub.12 and A or A', and two R.sub.12 's may together form a ring; ##STR3## wherein Q.sup.Type: GrantFiled: January 31, 1991Date of Patent: May 11, 1993Assignee: Fuji Photo Film Co., Ltd.Inventors: Michio Ono, Kouichi Hanaki, Kei Sakanoue, Shigeo Hirano, Mitsuru Yamamoto
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Patent number: 5210007Abstract: A color photographic element for use with a latent or silver image intensification or amplification method which incorporates a blocked color developing agent. The color photographic element includes at least one silver halide emulsion layer which includes at least about 70 mole percent chloride and has a concentration of silver within the range of about 0.1 mg/m.sup.2 to 2000 mg/m.sup.2. The blocked color developing agent is capable of being unblocked during photographic processing by means of reaction with a dinucleophile reagent. A preferred dinucleophile reagent is hydrogen peroxide, which also acts as an oxidant in the latent or silver image intensification method.Type: GrantFiled: December 19, 1991Date of Patent: May 11, 1993Assignee: Eastman Kodak CompanyInventors: John Texter, David Southby, Jared Mooberry, Roland Willis
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Patent number: 5204242Abstract: The present invention provides a colorimetric process for the detection of an oxidative coupling reaction in which a coupling component is reacted with a developer component in the presence of an oxidation agent to give a colored material, wherein, as coupling component, there is used a compound of the general formula: ##STR1## in which X is a bromine or chlorine atom, n is 1, 2 or 3, Y is COOR, CONRR', SO.sub.3 R, SO.sub.2 NRR', OR, NRR' or NRR'R".sym. and R, R' and R", independently of one another, are hydrogen atoms or C.sub.1 -C.sub.3 -alkyl radicals.The present invention also provides a reagent which contains the above compound, as well as new substituted phenols and a process for the preparation thereof.Type: GrantFiled: September 17, 1991Date of Patent: April 20, 1993Assignee: Boehringer Mannheim GmbHInventors: Martina Junius-Comer, Bernd Vogt, Rupert Herrmann
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Patent number: 5204213Abstract: A silver halide photographic material comprising at least one silver halide emulsion layer on a support, characterized in that there is contained a compound represented by the general formula ##STR1## wherein R.sup.1 and R.sup.2 each represents a hydrogen atom, aliphatic group, aromatic group or heterocyclic group, with the proviso that R.sup.1 and R.sup.2 may be connected to each other to form a ring; L represents a divalent linking group; V represents a carbonyl group, ##STR2## group, sulfonyl group, sulfoxy group, ##STR3## group (in which R.sub.0 represents an alkoxy group or aryloxy group), iminomethylene group or thiocarbonyl group; Time represents a divalent linking group; m represents an integer 0 or 1; n represents an integer 0 or 1; PUG represents a photographically useful group; and X represents an atomic group required to form a 5- or 6-membered ring with ##STR4## wherein R.sup.1, R.sup.Type: GrantFiled: February 13, 1991Date of Patent: April 20, 1993Assignee: Fuji Photo Film Co., Ltd.Inventors: Hisashi Okada, Morio Yagihara
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Patent number: 5202225Abstract: Disclosed is a silver halide photographic material comprising a support, having thereon at least one silver halide emulsion layer, wherein there is contained in the silver halide emulsion layer or other hydrophilic colloid layer a compound of which an oxidized form is produced in accordance with development of the silver halide and is capable of releasing a photographically useful group by means of a conjugated addition-elimination mechanism due to an intramolecular nucleophilic group attack.Type: GrantFiled: August 14, 1991Date of Patent: April 13, 1993Assignee: Fuji Photo Film Co., Ltd.Inventors: Takeshi Nakamine, Takayuki Ito, Naoto Matsuda, Koki Nakamura, Hiroyuki Hirai
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Patent number: 5196291Abstract: A silver halide photographic material which comprises a support having provided thereon at least one light-sensitive emulsion layer, and which contains in said emulsion layer, or at least one other layer, at least one hydrazine derivative, at least one contrast enhancing agent and at least one redox compound capable of releasing a development inhibitor upon being oxidized. The hydrazine derivative is exemplified by compounds represented by the following formula: ##STR1## wherein R.sub.1 represents an aliphatic group or an aromatic group; R.sub.2 represents a hydrogen atom, an alkyl group, an aryl group, an alkoxy group, an aryloxy group, an amino group, a carbamoyl group or an oxycarbonyl group; G.sub.1 represents a carbonyl group, a sulfonyl group, a sulfoxy group, ##STR2## or an iminomethylene group; and A.sub.1 and A.sub.2 both represent a hydrogen atom, or, alternatively, one of them represents a hydrogen atom and the other represents an alkylsulfonyl group, an arylsulfonyl group, or an acyl group.Type: GrantFiled: July 30, 1991Date of Patent: March 23, 1993Assignee: Fuji Photo Film Co., Ltd.Inventors: Hisashi Okada, Kazunobu Katoh
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Patent number: 5190852Abstract: Disclosed is a silver halide photographic material comprising a support having thereon at least one layer containing a compound represented by general formula (I): ##STR1## wherein EAG represents an electron-accepting group; A represents a group which undergoes a reaction triggered by the cleavage of the oxygen-nitrogen single bond in the general formula to release PUG; B represents a hydrogen atom or an alkyl group, an aralkyl group, an aryl group, a heterocylic group, an acyl group, a sulfonyl group, a carbamoyl group, a sulfamoyl group, an alkoxycarbonyl group, an aryloxycarbonyl group, an alkoxysulfonyl group or an aryloxysulfonyl group which may contain substituents; the solid lines indicate a single bond; the broken lines indicate that either of these line is a bond, with the proviso that when the broken line between N and A represents a bond, B is not present; EAG and B, and A and B may be connected to each other to form a ring; EAG may be connected to a polymer residue to fix the compound of general fType: GrantFiled: February 12, 1992Date of Patent: March 2, 1993Assignee: Fuji Photo Film Co., Ltd.Inventors: Naoto Matsuda, Michio Ono
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Patent number: 5190846Abstract: A silver halide photographic material comprising a support having thereon at least one light-sensitive silver halide emulsion layer, wherein the silver halide photographic material contains at least one photographic agent represented by the following formula (I): ##STR1## wherein X represents a hydrogen atom or a group capable of forming a hydrogen atom upon hydrolysis; Time represents a divalent linking group; PUG represents a photographically useful group; V represents ##STR2## wherein R.sub.0 represents n alkoxy group or an aryloxy group, ##STR3## an iminomethylene group or ##STR4## R.sub.1 represents a hydrogen atom, an aliphatic group, an aromatic group, a heterocyclic group, an alkoxy group, an aryloxy group, an amino group or --CHR.sub.2 --(Time).sub.m PUG; R.sub.2 represents a hydrogen atom, an aliphatic group, an aromatic group or a heterocyclic group; m represents 0 or 1; and n represents 0 or 1.Type: GrantFiled: November 13, 1990Date of Patent: March 2, 1993Assignee: Fuji Photo Film Co., Ltd.Inventors: Morio Yagihara, Hisashi Okamura, Kazunobu Katoh
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Patent number: 5187042Abstract: A silver halide photographic material comprising a support having thereon at least one sensitive silver halide emulsion layer, wherein said emulsion layer comprises a monodisperse emulsion and said emulsion layer or other hydrophilic colloid layer contains at least one hydrazine derivative and at least one redox compound capable of releasing a development inhibitor when oxidized.Type: GrantFiled: April 27, 1990Date of Patent: February 16, 1993Assignee: Fuji Photo Film Co., Ltd.Inventors: Kazunobu Katoh, Hisashi Okamura, Hisashi Okada, Nobuaki Inoue, Toshiro Takahashi, Morio Yagihara, Tetsuo Yamaguchi
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Patent number: 5158863Abstract: The invention is performed by providing a first flow of water and surfactant, a second flow comprising solvent, base and photographic material, and mixing said first and second streams and either simultaneously or immediately following thereof neutralizing said streams to prevent hydrolysis of a hydrolyzable surfactant and/or premature precipitation of particles before neutralization. The streams then may be immediately treated for formation into photographic materials. In a preferred method the first and second stream may be brought together immediately prior to a mixer with addition of acid directly into the mixer to neutralize the dispersion of fine particles.Type: GrantFiled: February 1, 1991Date of Patent: October 27, 1992Assignee: Eastman Kodak CompanyInventors: Pranab Bagchi, James T. Beck, Lia A. Crede
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Patent number: 5156940Abstract: A new class of photographic stabilizers is prepared and their use in photographic materials is disclosed. These compounds are 1-phenyl-3-pyrazolidinone derivatives corresponding to following general formula: ##STR1## wherein: A represents a group capable of adsorbing at the surface of silver halides;L is a divalent linking group and r is 0 or 1;R1 and R2 each represent hydrogen, lower alkyl or substituted lower alkyl.The photographic materials containing the substances of the invention are preferably DTR mono-sheet elements which after processing can serve as planographic printing plates.Type: GrantFiled: February 13, 1991Date of Patent: October 20, 1992Assignee: AGFA-Gevaert, N.V.Inventors: Piet Kok, Jos A. Vaes, Jean-Marie O. Dewanckele, Luc J. Wabbes
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Patent number: 5155004Abstract: A chitosan or chitin compound having a photographically useful residue. There is also disclosed a method for processing a silver halide photographic material which comprises processing a silver halide photographic material comprising a support having thereon at least one light-sensitive silver halide emulsion layer in the presence of said chitosan or chitin compound represented by the following general formula (I) ##STR1## wherein the substituents are defined in the instant specification.Type: GrantFiled: March 13, 1991Date of Patent: October 13, 1992Assignee: Fuji Photo Film Co., Ltd.Inventor: Tetsuro Kojima
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Patent number: 5155006Abstract: A silver halide photographic material comprising;a support; at least one light-sensitive silver halide emulsion layer containing a hydrazine derivative on the support; at least one hydrophilic colloid layer containing a redox compound capable of releasing a development inhibitor upon oxidation; and a developing agent incorporated, at least, into the at least one light-sensitive silver halide emulsion layer or the at least one hydrophilic colloid layer and a method for forming an image which comprises the steps of imagewise exposing to light the silver halide photographic material described above; and developing the exposed material with a developing solution having a sulfite ion concentration of at least about 0.15 mol/l and a pH of from about 10.5 to about 12.3.Type: GrantFiled: September 19, 1990Date of Patent: October 13, 1992Assignee: Fuji Photo Film Co., Ltd.Inventors: Takahiro Goto, Kazunobu Katoh
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Patent number: 5147754Abstract: A silver halide photographic material which provides a negative image contains a compound represented by formula (I): ##STR1## wherein R represents an aliphatic group, an aromatic group, or a heterocyclic group; Z represents a development inhibitor group containing an anionic functional group as a partial structure; "Time" represents a divalent group; and n is 0 or 1.Type: GrantFiled: August 7, 1991Date of Patent: September 15, 1992Assignee: Fuji Photo Film Co., Ltd.Inventors: Hisashi Okamura, Hisashi Okada, Morio Yagihara, Kazunobu Katoh
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Patent number: 5145765Abstract: A silver halide photographic material which contains (a) at least one redox compound capable of releasing a development inhibitor by oxidation and (b) at least one compound represented by the following general formula (I): ##STR1## wherein R.sub.1 represents an aliphatic group, an aromatic group, or a heterocyclyl group; L.sub.1 represents a divalent organic group; X.sub.1 represents a hydrogen atom, an aliphatic group, an aromatic group, or a heterocyclyl group; and Y.sub.1 represents --O--, --SO.sub.2 NH-- or ##STR2## where Y.sub.Type: GrantFiled: August 14, 1991Date of Patent: September 8, 1992Assignee: Fuji Photo Film Co., Ltd.Inventors: Hisashi Okamura, Kazunobu Katoh
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Patent number: 5141843Abstract: A developer liquid suited for use in development of photographic silver halide emulsion layer materials which liquid contains:1) hydroquinone or a substituted hydroquinone as sole developing agent or said hydroquinone as main developing agent in combination with an auxiliary developing agent in an amount less than 10 mole % with respect to the main developing agent,2) an inorganic compound yielding free sulphite ions in an amount of at least 5 grams per liter,3) an organic anti-fogging agent corresponding to the following general formula (Z): ##STR1## wherein: X.sup.2 represents an alkyl group or an aryl group including said groups in substituted form or an amino group including said group in substituted form;the amount of anti-fogging agent being in the range of 50 mg to 1 g per liter,4) a polymer containing a plurality of alkylene oxide units, and5) the necessary alkaline material to have in said liquid a pH of at least 10.5. Optional additives can also be present in the developing liquid.Type: GrantFiled: March 27, 1991Date of Patent: August 25, 1992Assignee: AGFA-Gevaert N. V.Inventors: Richard A. Ooms, Piet Kok, Jean-Marie O. Dewanckele
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Patent number: 5142029Abstract: The compounds in a preferred form are represented by general formula (I): ##STR1## wherein A and A' are each a group which can be hydrolyzed by hydrogen or alkali; X, Y and Z are each hydrogen, a halogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkoxy group, a substituted or unsubstituted aryl group, a thioalkyl group or an electron-withdrawing group; PUG is a group released by a reaction with a light-exposed silver halide and/or the oxidized product of the developing agent, Time is a timing group; Time.sub.t PUG is a group released as .crclbar.TimePUG first when the oxidation-reduction moiety causes a cross reaction during the development and becomes an oxidized product, and is bonded to the benzene nucleus via a sulfur atom, a nitrogen atom or a selenium atom; and t is 0 or 1.Type: GrantFiled: August 5, 1991Date of Patent: August 25, 1992Assignee: Fuji Photo Film Co., Ltd.Inventors: Keiichi Adachi, Shingo Sato, Shigeo Hirano, Koki Nakamura, Morio Yagihara, Isamu Ito, Tadashi Ikeda, Kenichi Kuwabara
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Patent number: 5139919Abstract: A heat-developable color photographic material comprising a support having thereon at least a light-sensitive silver halide, a binder, at least one of an electron-donating agent and a precursor thereof, a reducible dye-forming compound which releases a diffusible dye by reduction and an electron-transferring agent, wherein an electron-transferring agent precursor co-exists together with the electron-transferring agent.Type: GrantFiled: February 21, 1991Date of Patent: August 18, 1992Assignee: Fuji Photo Film Co., Ltd.Inventors: Toshiki Taguchi, Takeshi Nakamine, Ken Kawata, Hiroyuki Hirai
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Patent number: 5139921Abstract: A process of forming super high contrast negative photographic materials in a developer having a pH of from 9.6 to 11.0 wherein the photographic material contains a hydrazine compound and a nucleation accelerator. The nucleation accelerator is represented by formula (Ia):Y[(A.sub.1).sub.p A.sub.2 --B].sub.m (Ia)wherein Y represents a group adsorbing onto silver halide; A.sub.1 represents a divalent linkage group composed of an atom or an atomic group selected from hydrogen, carbon, nitrogen, oxygen, and sulfur and selected from ##STR1## with a straight chain or branched alkylene group wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.6, R.sub.7, R.sub.8, R.sub.9 and R.sub.10 each represents hydrogen, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted alkenyl group or a substituted or unsubstituted aralkyl group; A.sub.Type: GrantFiled: February 12, 1991Date of Patent: August 18, 1992Assignee: Fuji Photo Film Co., Ltd.Inventors: Yoshihiro Takagi, Hisashi Okada, Morio Yagihara
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Patent number: 5134061Abstract: Photographically useful organic compounds containing secondary-branched alkyl radicals with at least 15 C atoms corresponding to formula I have a low melting point, good solubility in oil formers and a low tendency towards crystallization which makes them particularly suitable for photographic applications. ##STR1## In formula I: PNOV is the residue of a photographically useful organic compound, for example a coupler or oil former;L is a chemical bond or a link between PNOV and X;X represents --O--, --S--, --SO--, --SO.sub.2 --, --NH--, --NR-- (R.dbd.alkyl or acyl), --CO-- or alkylidene;R.sup.1 and R.sup.2 are unbranched alkyl radicals containing at least 6 C atoms, with the proviso that R.sup.1 and R.sup.2 together contain at least 14 C atoms and, where X represents --CO-- or --CH.sub.2, at least 17 C atoms.Type: GrantFiled: March 18, 1991Date of Patent: July 28, 1992Assignee: Agfa Gevaert AktiengesellschaftInventor: Erich Wolff
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Patent number: 5134055Abstract: A silver halide photographic material is disclosed, which has at least one compound represented general formula (1): ##STR1## wherein R represents an aliphatic group, an aromatic group, or a heterocyclic group; both L and Time represent a divalent organic group; t represents 0 or 1; PUG represents a photographically useful group; Y represents --SO.sub.2 --, --Y'--SO.sub.2 --, or ##STR2## and Y' represents --O--, --NH--, or ##STR3## The material has a broad exposure latitude in line image-taking work and has a high resolving power in the work. It can form an ultrahard image having a high gamma value of 10 or more. The material may excellently reproduce a line original to form an ultrahard image having a high background density. It also has a broad exposure latitude in halftone dot image-taking work and can form a halftone dot image having ultrahigh contrast with high image quality.Type: GrantFiled: April 20, 1990Date of Patent: July 28, 1992Assignee: Fuji Photo Film Co., Ltd.Inventors: Hisashi Okamura, Hisashi Okada, Morio Yagihara, Kazunobu Katoh, Keiji Mihayashi
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Patent number: 5132201Abstract: A silver halide photographic material composed of a support having thereon at least one light-sensitive silver halide emulsion layer, at least one layer of the material containing a compound represented by formula (I): ##STR1## wherein X represents hydrogen or a group capable of providing hydrogen upon hydrolysis; Time represents a divalent linking group; t is 0 or 1; PUG represents a photographically useful group; V represents a carbonyl group, a sulfonyl group, a sulfoxy group, an iminomethylene group, ##STR2## wherein W represents an electrophilic group, or V represents ##STR3## wherein R.sub.0 represents an alkoxy group or an aryloxy group; and R represents hydrogen, an aliphatic group, an aromatic group or ##STR4## wherein PUG, Time, t, and W are as defined above. The redox compound is capable of releasing a photographically useful reagent using any conventional developing agent, has excellent storage stability, and provides rapid release of the photographically useful reagent.Type: GrantFiled: November 12, 1991Date of Patent: July 21, 1992Assignee: Fuji Photo Film Co., Ltd.Inventors: Morio Yagihara, Hisashi Okada