Development Dye Releaser (ddr) Patents (Class 430/958)
  • Patent number: 7695898
    Abstract: Disclosed is a photothermographic material having an image-forming layer containing a silver salt of an organic acid, photosensitive silver halide grains and a reducing agent on a support, wherein ratio of scratch strength measured before heat development and scratch strength measured 30 minutes after the heat development is in the range of 1:1-1:3 for a surface of the image-forming layer side. The photothermographic material shows improved film strength after heat development.
    Type: Grant
    Filed: April 10, 2008
    Date of Patent: April 13, 2010
    Assignee: Fujifilm Corporation
    Inventor: Makoto Ishihara
  • Patent number: 7108964
    Abstract: The invention relates to a novel kind of anthranilic acid compound that releases a UG as a function of chemical bond cleavage according to Formula (I): Q-(AAS)-UG where UG is an useful group and is chemically bonded to (AAS); (AAS) is an anthranilic acid switching group; and Q is a group in which the bond to (AAS) is broken so that the -(AAS)-UG fragment subsequently decomposes to the free UG.
    Type: Grant
    Filed: August 5, 2005
    Date of Patent: September 19, 2006
    Assignee: Eastman Kodak Company
    Inventors: Stephen P. Singer, Philip A. Allway, Trevor J. Wear, Louis E. Friedrich, Siu (Lambert) C. Tsoi, Bernard A. Clark, Paul L. Stanley
  • Patent number: 6759187
    Abstract: This invention relates to an imaging element comprising an imaging layer having associated therewith a compound of Structure I: wherein: the substituents are as defined in the application.
    Type: Grant
    Filed: July 11, 2000
    Date of Patent: July 6, 2004
    Assignee: Eastman Kodak Company
    Inventors: Wojciech K. Slusarek, Xiqiang Yang, Mark E. Irving, David H. Levy, Jared B. Mooberry, James J. Seifert, James H. Reynolds, Lyn M. Irving
  • Patent number: 6756192
    Abstract: This invention relates to an imaging element comprising an imaging layer having associated therewith a compound of Structure I: wherein: the substituents are as defined in the application.
    Type: Grant
    Filed: December 30, 1999
    Date of Patent: June 29, 2004
    Assignee: Eastman Kodak Company
    Inventors: Wojciech K. Slusarek, Xiqiang Yang, Mark E. Irving, David H. Levy, Jared B. Mooberry, James J. Seifert, James H. Reynolds, Lyn M. Irving
  • Patent number: 6610450
    Abstract: This invention comprises an imaging element comprising an imaging layer having associated therewith a phenolic activating agent in combination with a blocked color-forming agent of Structure I: wherein PUG is a photographically useful color-forming agent, LINK 1 and LINK 2 are linking groups; TIME is a timing group; HET is a heterocyclic group, and the other groups are as defined in the specification.
    Type: Grant
    Filed: June 1, 2001
    Date of Patent: August 26, 2003
    Assignee: Eastman Kodak Company
    Inventors: Xiqiang Yang, Zbyslaw R. Owczarczyk, David T. Southby
  • Patent number: 6534226
    Abstract: This invention comprises an imaging element comprising an imaging layer having associated therewith a compound of Structure I: In the above Structure I, the substituents are as defined in the application. Such compounds have good reactivity and can by used to block photographically useful compounds such as developing agents until thermally activated under preselected conditions. Compounds according to the present invention are especially useful in color photothermographic imaging elements.
    Type: Grant
    Filed: November 20, 2000
    Date of Patent: March 18, 2003
    Assignee: Eastman Kodak Company
    Inventors: Zbyslaw R. Owczarczyk, David T. Southby, Xiqiang Yang
  • Patent number: 6531271
    Abstract: A light-sensitive silver-halide color photographic element comprising at least two different chromogenic couplers including, in reactive association, a multifunctional coupler and a developer precursor that liberates a developing agent enabling cyan color from the multifunctional coupler on development, wherein the multifunctional coupler has the property that it is capable of forming a distinctly colored dye with an oxidized form of the developer 4-(N-ethyl-N-2-hydroxyethyl)-2-methylphenylenediamine. In one embodiment, the multifunctional coupler has the property that it is capable of forming a distinctly colored magenta dye with an oxidized form of the developer 4-(N-ethyl-N-2-hydroxyethyl)-2-methylphenylenediamine. By means of the present invention, light-sensitive color photothermographic elements can form yellow, magenta and cyan dye records of consistent density forming ability and consistent stability in all three color records.
    Type: Grant
    Filed: August 16, 2001
    Date of Patent: March 11, 2003
    Assignee: Eastman Kodak Company
    Inventors: Richard P. Szajewski, Lyn M. Irving
  • Patent number: 6513212
    Abstract: A color photographic element comprising at least three light-sensitive units which have their individual sensitivities in different wavelength regions, at least one of units comprising a light-sensitive silver-halide emulsion, binder, and a coupler represented by formula I: COUP—(T)m—L—DYE′  (I) wherein COUP is a coupler parent group capable of reacting with an oxidized developer to form a first cyan dye and is bonded at a coupling position to a releasable group that forms a second dye of the same hue, as described in the specification.
    Type: Grant
    Filed: December 19, 2001
    Date of Patent: February 4, 2003
    Assignee: Eastman Kodak Company
    Inventors: Jared B. Mooberry, Wojciech K. Slusarek, David T. Southby, David H. Levy, Xiqiang Yang
  • Patent number: 6506546
    Abstract: This invention comprises an imaging element comprising an imaging layer having associated therewith a compound of Structure I: wherein PUG is a photographically useful group; LINK 1 and LINK 2 are linking groups; TIME is a timing group; T represents t independently selected substituted or unsubstituted alkyl or aryl groups, t is 0, 1, or 2 and if t is 2, the T groups can form a ring; HET is a heterocyclic group which optionally can form a ring with a T group; R12 is hydrogen, substituted or unsubstituted alkyl or substituted or unsubstituted aryl, or R12 can form a ring with a T group or with HET; 1 is 0 or 1; m is 0, 1, or 2; and n is 0 or 1.
    Type: Grant
    Filed: December 30, 1999
    Date of Patent: January 14, 2003
    Assignee: Eastman Kodak Company
    Inventors: Zbyslaw R. Owozarczyk, Xiqiang Yang, David T. Southby
  • Publication number: 20020172900
    Abstract: A color photographic silver halide material having a support, which material comprises at last one blue-sensitive, yellow-coupling silver halide emulsion layer and at least one geen-sensitive, magenta-coupling silver halide emulsion layer and at least one red-sensitive, cyan-coupling silver halide emulsion layer, and which contains at least one masking coupler which has two chromophores which absorb in the wavelength range from 420 to 750 nm and are eliminable or decolorisable by coupling with the developer oxidation product, is distinguished by improved sensitivity associated with undiminished color purity.
    Type: Application
    Filed: January 10, 2002
    Publication date: November 21, 2002
    Inventors: Jan Haller, Ralf Wirowski
  • Patent number: 6426179
    Abstract: This invention relates to an imaging element, such as a photographic or photothermographic element comprising a silver halide emulsion layer, wherein the element also comprises a compound of Structure I: wherein the substituents are as defined in the specification.
    Type: Grant
    Filed: December 30, 1999
    Date of Patent: July 30, 2002
    Assignee: Eastman Kodak Company
    Inventors: Wojciech K. Slusarek, Xiqiang Yang, Mark E. Irving, David H. Levy
  • Patent number: 6319640
    Abstract: This invention relates to an imaging element comprising an imaging layer having associated therewith a compound of Structure I: In the above Structure I, the substituents are as defined in the application. Such compounds have good reactivity and can by used to block photographically useful compounds such as developing agents until thermally activated under preselected conditions. Compounds according to the present invention are especially useful in color photothermographic imaging elements.
    Type: Grant
    Filed: November 13, 2000
    Date of Patent: November 20, 2001
    Assignee: Eastman Kodak Company
    Inventors: Wojciech K. Slusarek, Xiqiang Yang, David H. Levy
  • Patent number: 6306551
    Abstract: This invention relates to an imaging element comprising an imaging layer having associated therewith a compound of Structure I: wherein the substituents are as defined in the specification.
    Type: Grant
    Filed: December 30, 1999
    Date of Patent: October 23, 2001
    Assignee: Eastman Kodak Company
    Inventors: Zbyslaw R. Owczarczyk, Xiqiang Yang, David H. Levy, Mark E. Irving
  • Patent number: 6303261
    Abstract: Disclosed are a silver halide color photographic material having on a support a photographic element in which silver halide grains, a developing agent and a coupler capable of forming a dye by reaction with an oxidation product of the developing agent are incorporated, the photographic element further comprising at least one color stain inhibitive compound represented by the following formula (SC-1) or (SC-2) and at least one photographically useful group-releasing compound represented by the following formula (II); and a method of forming color images by the use of the foregoing material: A—[(L1)a—(B)m]p—(L2)n—PUG  (II)
    Type: Grant
    Filed: March 15, 2000
    Date of Patent: October 16, 2001
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Jun Arakawa, Toshio Kawagishi
  • Patent number: 6203964
    Abstract: A thermal recording medium comprising a ultraviolet absorber precursor represented by formula (1-A) or an image forming compound changing hue and an acid, which is high in thermal sensitivity, recordable with such a low output laser that no ablation takes place even when a thermal heat mode image recording system using a laser is utilized, requiring no different receiving sheet, and excellent in keeping quality: wherein P represents a protecting group for a hydroxyl group which is deblocked by heating to 250° C. or less in the presence of an acid; R1 and R2, which may be the same or different, each represents a substitutable group; and 1 and m each represents an integer of 0 to 4.
    Type: Grant
    Filed: March 13, 2000
    Date of Patent: March 20, 2001
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Tatsuhiko Obayashi, Junichi Yamanouchi, Atsuhiro Ohkawa
  • Patent number: 6187525
    Abstract: A photographic recording element is disclosed containing in at least one dye image forming layer unit (a) a radiation-sensitive silver halide grains include tabular grains (1) having {111} major faces, (2) containing greater than 50 mole percent bromide, based on silver, and (3) accounting for greater than 50 percent total grain projected area, (b) a fragmentable electron donating sensitizer, (c) a water dispersible cationic starch peptizer, and (d) a one equivalent dye image providing coupler. Increased photographic speed is realized.
    Type: Grant
    Filed: December 17, 1998
    Date of Patent: February 13, 2001
    Assignee: Eastman Kodak Company
    Inventors: Joe E. Maskasky, Kenneth J. Reed, Victor P. Scaccia, James A. Friday
  • Patent number: 6156490
    Abstract: Disclosed is a photographic element comprising a light-sensitive silver halide emulsion layer having associated therewith a coupler based on a 1-aryl-3-arylpyrazol-5-one or a 1-aryl-3-alkylpyrazol-5-one ring and represented by formula I: ##STR1## wherein: X represents an aryl, alkyl, alkylamino, or arylamino group;Y can be carbon or sulfur; in is 1 when Y is carbon and 2 when Y is sulfur;R represents a halogen or an alkyl group; and o is 0 to 4, provided that two or more R substituents may join to form one or more additional rings;Z is either (a) an aryl group represented as Ar.sup.3 Q(n) where Q represents n independently selected substituents bonded to the Ar.sup.3 ring; and n is 0 to 5, provided that two or more Q substituents may join to form one or more additional rings or (b) an alkyl group;OAr.sup.4 is an aryloxy group; andP represents p independently selected substituents bonded to the OAr.sup.
    Type: Grant
    Filed: December 30, 1998
    Date of Patent: December 5, 2000
    Assignee: Eastman Kodak Company
    Inventors: Wojciech K. Slusarek, Jerrold N. Poslusny, Xiqiang K. Yang
  • Patent number: 6153369
    Abstract: Disclosed is a photographic element comprising a light-sensitive silver halide emulsion layer having associated therewith a pyrazol-5-one coupler bearing a 4-aryloxy coupling-off group containing a group capable of releasing a photographically useful group (PUG) wherein:(1) the pyrazol-5-one ring contains a 1-aryl substituent which in turn contains, in a position ortho to the bond linking it to the pyrazolone ring, a secondary carbonamido group or a secondary sulfonamido group;(2) the pyrazol-5-one ring contains either (a) a 3-aryl substituent which in turn contains substituents for which the sum of the Hammett's .sigma. constant values is -0.3 or higher or (b) a 3-alkyl substituent; and(3) the 4-aryloxy coupling-off group:(a) contains ring substituents selected so that the sum of the Hammett's .sigma. constant values for all substituents on the phenoxy ring is at least 0.
    Type: Grant
    Filed: December 30, 1998
    Date of Patent: November 28, 2000
    Assignee: Eastman Kodak Company
    Inventors: Wojciech K. Slusarek, Jerrold N. Poslusny, Xiqiang K. Yang
  • Patent number: 6150079
    Abstract: A color photographic material, the cyan coupler of which is of the formula ##STR1## in which R.sub.11 means an alkyl, aryl, acylamino, alkylcarbamoyl, arylcarbamoyl or a heterocyclic group,R.sub.12 means a group having electron-attracting characteristics,R.sub.13 means a group having electron-attracting characteristics,R.sub.14 means an alkyl or aryl group,R.sub.15 means a divalent linking member having 2 to 4 linking atoms,X means .dbd.O or .dbd.N--SO.sub.2 R.sub.21 andY means a group eliminable by hydrolytic or intramolecular (nucleophilic) attack,is distinguished by improved processing stability.
    Type: Grant
    Filed: January 8, 1999
    Date of Patent: November 21, 2000
    Assignee: Agfa Gevaert N.V
    Inventor: Peter Bergthaller
  • Patent number: 6150078
    Abstract: The invention provides a photographic element comprising a light-sensitive silver halide emulsion layer having associated therewith an 1-arylpyrazol-5-one coupler bearing a 4-aryloxy coupling-off group containing a group capable of releasing a photographically useful group (PUG) wherein:(1) the 1-arylpyrazol-5-one ring contains a 3-aryl substituent which in turn contains substituents for which the sum of the Hammett's .sigma. constant values is at least 0, provide that two or more such substituents may join to form one or more additional rings; and(2) the 4-aryloxy coupling-off group:(a) contains ring substituents selected so that the sum of the Hammett's sigma constant values for all substituents on the aryloxy ring is at least 0.
    Type: Grant
    Filed: December 30, 1998
    Date of Patent: November 21, 2000
    Assignee: Eastman Kodak Company
    Inventors: Wojciech K. Slusarek, Jerrold N. Poslusny, Zheng Z. Wu, Xiqiang Yang
  • Patent number: 6132944
    Abstract: Disclosed is a photographic element containing a light sensitive silver halide emulsion layer having associated therewith a coupler represented by Formula I: ##STR1## wherein COUP is a coupler parent group capable of reacting with an oxidized developer to form a first dye and is bonded at a coupling position to the group ##STR2## wherein X is a or NSO.sub.2 R; R is an alkyl or aryl group; and DYE is a releasable second dye that is after release the same color as the first dye and is linked to OC.dbd.X by a moiety of the DYE having Formula (IA): ##STR3## wherein R.sup.2 is a substituent; provided there is contained in the coupler of Formula I at least one group of Formula IB:--L.sub.m --Sol IBwherein L is a divalent linking group and m is 0 or 1; and Sol is a group containing an acidic hydrogen selected from the group consisting of --ArOH, --NHSO.sub.2 R.sup.1 and --SO.sub.2 NHR.sup.1, in which AR is an aromatic group and each R.sup.
    Type: Grant
    Filed: November 4, 1999
    Date of Patent: October 17, 2000
    Assignee: Eastman Kodak Company
    Inventors: Jared B. Mooberry, Steven M. Bonser, Kevin P. Dockery, David Hoke, Chang-Kyu Kim, James J. Seifert, David T. Southby, Zheng Z. Wu
  • Patent number: 6107016
    Abstract: A silver halide color photographic material contains a coupler capable of releasing a photographically useful group or its precursor by a coupling reaction between the coupler and a developing agent in an oxidized form, wherein the coupler releases the photographically useful group or its precursor by an intramolecular nucleophilic substitution reaction using the nitrogen atom that directly bonds to a coupling position of a product obtained by the coupling reaction and that originates from the developing agent.
    Type: Grant
    Filed: April 16, 1999
    Date of Patent: August 22, 2000
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Takayuki Ito, Koji Takaku, Yasuhiro Shimada, Akira Ikeda, Hidetoshi Kobayashi
  • Patent number: 6063539
    Abstract: A thermal recording medium comprising a ultraviolet absorber precursor represented by formula (1-A) or an image forming compound changing hue and an acid, which is high in thermal sensitivity, recordable with such a low output laser that no ablation takes place even when a thermal heat mode image recording system using a laser is utilized, requiring no different receiving sheet, and excellent in keeping quality: ##STR1## wherein P represents a protecting group for a hydroxyl group which is deblocked by heating to 250.degree. C. or less in the presence of an acid; R.sup.1 and R.sup.2, which may be the same or different, each represents a substitutable group; and 1 and m each represents an integer of 0 to 4.
    Type: Grant
    Filed: July 22, 1998
    Date of Patent: May 16, 2000
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Tatsuhiko Obayashi, Junichi Yamanouchi, Atsuhiko Ohkawa
  • Patent number: 6060227
    Abstract: A color negative film having a support, at least one blue-sensitive, yellow-coupling silver halide emulsion layer, at least one green-sensitive, magenta-coupling silver halide emulsion layer and at least one red-sensitive, cyan-coupling silver halide emulsion layer, wherein at least one of the color-sensitive silver halide emulsion layers consists of at least two sub-layers of differing photographic sensitivity, the coupler application rate in the most highly sensitive layer of the color sensitive silver halide emulsion layer, of which there is at least one, consisting of at least two sub-layers of differing photographic sensitivity, is no more than 0.05 mmol/m.sup.
    Type: Grant
    Filed: July 24, 1998
    Date of Patent: May 9, 2000
    Assignee: Agfa-Gevaert NV
    Inventors: Ralf Buscher, Peter Bell, Hans-Ulrich Borst, Lothar Rosenhahn, Jorg Siegel, Thomas Stetzer
  • Patent number: 6013421
    Abstract: There is disclosed a silver halide photographic light-sensitive material containing a color-developing agent of formula (I) and a coupler of formula (II), in at least one photographic constitutional layer: ##STR1## In formula (I), Z is a carbamoyl, acyl, alkoxycarbonyl, or aryloxycarbonyl group, and Q is a group of atoms that, together with the C, form an unsaturated ring. In formula (II), Cp is a coupler residue, Time is a group that releases PUG upon released from Cp by coupling reaction, PUG is a photographically useful group, and t is 0, 1, 2, or 3. There is also disclosed a silver halide photographic light-sensitive material containing a color-developing agent of formula (I), a dye-forming coupler, and a non-dye-forming coupler (that is unsubstituted on its active site), in at least one photographic constitutional layer. There is further disclosed methods for forming an image using the light-sensitive materials.
    Type: Grant
    Filed: July 18, 1997
    Date of Patent: January 11, 2000
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Koki Nakamura, Kazuhiko Matsumoto
  • Patent number: 6007973
    Abstract: The invention provides a tightly wrapped photographic element comprising a support bearing at least one photographic silver halide emulsion having associated therewith at least one high dye-yield coupler that releases a dye having an electrically neutral dye chromophore, said element having a radius of curvature of less than 6,000 micrometers. The tightly wrapped photographic element exhibits less pressure sensitivity than conventional elements while maintaining satisfactory photographic response.This is a Continuation of application Ser. No. 08/565,122, filed Nov. 30, 1995, now abandoned, which is a Continuation of application Ser. No. 08/250,199, file May 27, 1994, now abandoned.
    Type: Grant
    Filed: September 22, 1997
    Date of Patent: December 28, 1999
    Assignee: Eastman Kodak Company
    Inventors: David Thomas Southby, Richard Peter Szajewski
  • Patent number: 5998121
    Abstract: The photographic element of the invention provides a support bearing at least one photographic silver halide emulsion exhibiting low developability and having associated therewith at least one high dye-yield coupler that releases a dye or dye precursor having an electrically neutral dye chromophore. The invention also encompasses a process for forming an image in an element in accordance with the invention.
    Type: Grant
    Filed: October 15, 1996
    Date of Patent: December 7, 1999
    Assignee: Eastman Kodak Company
    Inventors: David T. Southby, James T. Kofron, Robert J. Newmiller
  • Patent number: 5981157
    Abstract: A silver halide light-sensitive color photographic material comprising containing a coupler is disclosed.
    Type: Grant
    Filed: December 23, 1996
    Date of Patent: November 9, 1999
    Assignee: Konica Corporation
    Inventors: Shinri Tanaka, Michiko Nagato
  • Patent number: 5912110
    Abstract: A photographic element comprising a support having situated thereon at least one silver halide emulsion layer, the layer containing a photographic coupler represented by the formula ##STR1## wherein COUP is a coupler moiety having a coupling site to which T.sup.1 is attached;T.sup.1 is a timing or linking group which releases from COUP during processing and which functions by electron transfer down a conjugated chain, or by nucleophilic displacement reaction, to release from HETERO;HETERO is a heterocyclic group containing at least two heteroatoms independently selected from oxygen, nitrogen, or sulfur, wherein one of the heteroatoms is directly attached to T.sup.1 ;R.sup.1 and R.sup.2 are independently selected from hydrogen, or an aliphatic, carbocyclic, or heterocyclic group, or may be bonded together to form a 5, 6, or 7 membered ring; andPUG is a photographically useful group.
    Type: Grant
    Filed: June 10, 1997
    Date of Patent: June 15, 1999
    Assignee: Eastman Kodak Company
    Inventors: William James Begley, Teh Hsuan Chen, Frank Dino Coms, Donald Singleton, Jr.
  • Patent number: 5830627
    Abstract: A silver halide color photographic material is described, which comprises a support having provided thereon a blue-sensitive silver halide emulsion layer, a green-sensitive silver halide emulsion layer, and a red-sensitive silver halide emulsion layer, wherein the photographic material contains at least one compound having a photographically useful compound which is inactivated by the chelation with a metal, and the ratios of the gradients of yellow, magenta and cyan in specific development processing II to the gradients thereof in specific development processing I satisfy the following conditions:0.8.ltoreq..gamma..sub.II (Y)/.gamma..sub.I (Y).ltoreq.1.20.8.ltoreq..gamma..sub.II (M)/.gamma..sub.I (M).ltoreq.1.20.8.ltoreq..gamma..sub.II (C)/.gamma..sub.I (C).ltoreq.1.2wherein .gamma..sub.I (Y), .gamma..sub.I (M) and .gamma..sub.I (C) each represents the gradient of yellow, magenta or cyan when the development processing I is carried out and .gamma..sub.II (Y), .gamma..sub.II (M) and .gamma..sub.
    Type: Grant
    Filed: April 2, 1997
    Date of Patent: November 3, 1998
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Yasufumi Nakai, Jiro Tsukahara, Toshio Kawagishi
  • Patent number: 5827637
    Abstract: A silver halide light-sensitive material is disclosed, comprising a compound represented by the following formula (1): ##STR1## wherein PUG represents a photographically useful group bonded to B through a hetero atom thereof, CHL represents a multidentate ligand capable of coordinating to a metal atom, B represents a block group of which bonding to PUG is cleaved on cleavage of the bonding of CHL--M, M represents a divalent or greater metal, L represents a chelating ligand, m represents an integer of from 1 to 3, n represents 0 or an integer of 1 or 2, and the sum of m and n does not exceed 3. Also disclosed is an image formation method using the above-described silver halide light-sensitive material.
    Type: Grant
    Filed: March 19, 1997
    Date of Patent: October 27, 1998
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Osamu Uchida, Jiro Tsukahara, Toshio Kawagishi, Hideaki Satoh, Yasufumi Nakai
  • Patent number: 5827638
    Abstract: A silver halide photographic light-sensitive material is described, which comprises a support having provided thereon a light-sensitive silver halide emulsion layer, wherein the silver halide photographic material contains a compound having been blocked by a metal chelate and capable of releasing a photographically useful compound therefrom through a reaction of the metal chelate moiety with a water-soluble chelating agent capable of forming a metal chelate having a higher stability constant on development. A method for forming an image is also described, which comprises processing, after imagewise exposure, a silver halide photographic light-sensitive material with a processing solution containing a nitrogen-containing heterocyclic carboxylic acid-base chelating agent.
    Type: Grant
    Filed: March 20, 1997
    Date of Patent: October 27, 1998
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Jiro Tsukahara, Hideaki Satoh, Osamu Uchida, Toshio Kawagishi, Yasufumi Nakai
  • Patent number: 5686234
    Abstract: A photographic element comprising a support having situated thereon at least one silver halide emulsion layer, the layer containing a photographic coupler represented by the formulaCOUP--T.sup.1 --T.sup.2 --(T.sup.3).sub.b --PUGwhereinCOUP is a coupler moiety having a coupling site to which T.sup.1 is attached;T.sup.1 is a timing or linking group which releases from COUP during processing and which functions by electron transfer down a conjugated or unconjugated chain, or by nucleophilic displacement reaction, to release T.sup.2, T.sup.2 being an indazole timing or linking group which, after release from T.sup.1, functions by electron transfer down a conjugated chain to release T.sup.3 or PUG, and which is represented by the formula: ##STR1## wherein ** denotes the point of attachment to T.sup.1 and *** denotes the point of attachment to T.sup.3 or PUG;R.sup.1 and R.sup.
    Type: Grant
    Filed: January 24, 1996
    Date of Patent: November 11, 1997
    Assignee: Eastman Kodak Company
    Inventors: William James Begley, Teh Hsuan Chen, Donald Singleton, Jr., Frank Dino Coms
  • Patent number: 5670301
    Abstract: A photographic element comprising a support having situated thereon at least one silver halide emulsion layer, the layer containing a photographic coupler represented by the formula ##STR1## wherein COUP is a coupler moiety having a coupling site to which T.sup.1 is attached;T.sup.1 is a timing or linking group which releases from COUP during processing and which functions by electron transfer down a conjugated chain, or by nucleophilic displacement reaction, to release from HETERO;HETERO is a heterocyclic group containing at least two heteroatoms independently selected from oxygen, nitrogen, or sulfur, wherein one of the heteroatoms is directly attached to T.sup.1 ;R.sup.1 and R.sup.2 are independently selected from hydrogen, or an aliphatic, carbocyclic, or heterocyclic group, or may be bonded together to form a 5, 6, or 7 membered ring; andPUG is a photographically useful group.
    Type: Grant
    Filed: January 24, 1996
    Date of Patent: September 23, 1997
    Assignee: Eastman Kodak Company
    Inventors: William James Begley, Teh Hsuan Chen, Frank Dino Coms, Donald Singleton, Jr.
  • Patent number: 5654123
    Abstract: Multilayer color photographic elements are described which contain a release compound that during photographic processing provides an imagewise distribution of a nucleophile which can react with a uniform distribution of a sulfinate blocked dye moiety contained in the element to release a solubilized unblocked dye.
    Type: Grant
    Filed: June 28, 1996
    Date of Patent: August 5, 1997
    Assignee: Eastman Kodak Company
    Inventors: Xiqiang Yang, Zbyslaw R. Owczarczyk, Daniel L. Kapp
  • Patent number: 5612173
    Abstract: A photographic element containing a dye which when released from a coupler has a sufficiently low pKa, generally less than about 5, such that the dye remains substantially or fully ionized during coating of the film and in the produced film, results in an element containing a dye which has the desired hue without the use of additional additives, such as mordants, to keep the dye ionized. The dye is also useful in photographic elements without release from a coupler, for example, as a filter dye.
    Type: Grant
    Filed: May 23, 1995
    Date of Patent: March 18, 1997
    Assignee: Eastman Kodak Company
    Inventors: Gary S. Proehl, Stephen P. Singer, J. Michael Buchanan
  • Patent number: 5543279
    Abstract: A silver halide light-sensitive material containing a compound represented by formula (I): ##STR1## wherein variables in the above formula (I) are defined in the specification. The silver halide light-sensitive material has a small fluctuation in sensitivity even when the processing temperature changes and has an improved color reproduction and an excellent discrimination and can achieve low Dmin and high Dmax.
    Type: Grant
    Filed: April 14, 1994
    Date of Patent: August 6, 1996
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Naoto Matsuda, Makoto Yamada, Michio Ono, Yasuhiro Ishiwata, Osamu Uchida
  • Patent number: 5538834
    Abstract: A method is disclosed for developing an image in a photographic element comprising a support, a silver halide emulsion containing an imagewise distribution of developable silver halide grains, and a blocked photographically useful compound comprising a photographically useful group and a blocking group capable of releasing the photographically useful group upon processing the photographic element in the presence of a peroxide, wherein the blocking group comprises an electrophilic group which is solely capable of undergoing a nucleophilic displacement reaction, the electrophilic group being bonded directly or through a releasable timing group to the photographically useful group, with the proviso that when the photographically useful group is a development inhibitor, the blocking group is bonded to the photographically useful group through at least one releasable timing group. The method comprises the step of contacting the photographic element with a processing solution comprising a peroxide.
    Type: Grant
    Filed: November 21, 1994
    Date of Patent: July 23, 1996
    Assignee: Eastman Kodak Company
    Inventors: J. Michael Buchanan, Jared B. Mooberry, John Texter
  • Patent number: 5529894
    Abstract: Disclosed is a silver halide color photographic material which comprises a support having thereon at least one photosensitive silver halide emulsion layer, a pyrazoloazole based magenta coupler, and a coupler which contains a plurality of photographically useful groups or precursors thereof. The photograhically useful groups or precursors thereof are capable of being released when the coupler undergoes a coupling reaction with the oxidized product of a color developing agnet.
    Type: Grant
    Filed: March 9, 1994
    Date of Patent: June 25, 1996
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Keiji Mihayashi, Atsuhiro Ohkawa
  • Patent number: 5514532
    Abstract: A silver halide color photographic material comprising a support having thereon at least one layer containing a hydrazide compound represented by the following formula (1) ##STR1## wherein R represents an alkyl group, an aryl group, or an aromatic heterocyclic group and (PA) represents a pyrazoloazole coupler residue or an indazolone coupler residue.
    Type: Grant
    Filed: October 11, 1994
    Date of Patent: May 7, 1996
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Tadahisa Sato, Kei Sakanoue
  • Patent number: 5510235
    Abstract: Photographic elements comprising certain 2-phenylcarbamoyl-1-naphthol couplers exhibit proper hue, a resistance to dye crystallization, and a resistance to leuco cyan dye formation. Such couplers can be utilized for their image-modifying effect and can contribute substantially to the overall dye density of an image.
    Type: Grant
    Filed: July 28, 1993
    Date of Patent: April 23, 1996
    Assignee: Eastman Kodak Company
    Inventors: Paul B. Merkel, Jerrold N. Poslusny, Daniel L. Kapp, John R. Ross
  • Patent number: 5470688
    Abstract: In accordance with this invention a heat-developable photographic color diffusion transfer element is provided, where this element comprises a dimensionally stable support and one or more layers comprising radiation sensitive silver halide, an organic silver salt oxidizing agent, a reducing agent, a methine-dye releasing compound, and a binder, wherein said methine-dye is heat diffusible in said element, and wherein said methine-dye releasing compound is of the structureCp--L--M (I)whereCp is a coupler radical substituted in the coupling position with a divalent linking group, L;M is a methine-dye radical exhibiting selective absorption in the visible spectrum; and where the --L--M group couples off upon reaction of said coupler radical with the oxidation product of a primary amine developing agent, and where said methine-dye radical M is released from said --L--M group subsequent to the coupling off of said --L--M group.
    Type: Grant
    Filed: May 27, 1994
    Date of Patent: November 28, 1995
    Assignee: Eastman Kodak Company
    Inventors: John Texter, Thomas R. Welter, David T. Southby, Jared B. Mooberry
  • Patent number: 5466566
    Abstract: A silver halide color photographic material comprises at least one red-sensitive layer, at least one green-sensitive layer and at least one blue-sensitive layer on a support, in which (1) the blue-sensitive layer contains a magenta colored or cyan colored yellow coupler and contains an emulsion of tabular grains having a mean aspect ratio of 3.0 or more, (2) the green-sensitive layer contains a cyan colored magenta coupler and contains an emulsion of tabular grains having a mean aspect ratio of 3.0 or more, or (3) the blue-sensitive layer and/or the green-sensitive layer contain(s) a magenta colored or cyan colored colorless coupler and contain(s) an emulsion of tabular grains having a mean aspect ratio of 3.0 or more. The material has excellent color reproducibility and gives a color image having good sharpness and storage stability.
    Type: Grant
    Filed: July 23, 1993
    Date of Patent: November 14, 1995
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Mamoru Tashiro, Seiji Ichijima
  • Patent number: 5455141
    Abstract: Photographic elements are described which contain a release compound that during photographic processing provides an imagewise distribution of a nucleophile which can react with a uniform distribution of a blocked dye moiety contained in the element to release an unblocked dye.
    Type: Grant
    Filed: August 15, 1994
    Date of Patent: October 3, 1995
    Assignee: Eastman Kodak Company
    Inventors: Zbyslaw R. Owczarczyk, Xiqiang Yang, Daniel L. Kapp, Wojciech K. Slusarek, Louis E. Friedrich, David T. Southby
  • Patent number: 5447833
    Abstract: A silver halide photographic material having on a support at least one silver halide emulsion layer, which contains at least one precursor of the kind which releases at least two groups selected from the group consisting of a photographically useful group and a precursor thereof via a timing group, wherein plural photographically useful groups or precursors thereof are present on different constituent atoms of said timing group, provided that when the plural photographically useful groups have different functions, the timing group is a group which does not utilize an intramolecular nucleophilic substitution reaction.
    Type: Grant
    Filed: April 28, 1994
    Date of Patent: September 5, 1995
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Masuji Motoki, Atsuhiro Ohkawa, Keiji Mihayashi
  • Patent number: 5436111
    Abstract: A color diffusion transfer light-sensitive material is described including a support having thereon at least one light-sensitive emulsion layer associated with a dye image-forming material and an electron donor, wherein the dye image-forming material comprises at least one reducible dye-providing compound represented by formula (I) which releases a diffusible dye upon being reduced and tabular silver halide grains having a mean grain diameter of at least about 0.3 .mu.m, a mean grain thickness of less than about 0.5 .mu.m, and a mean aspect ratio of at least about 2 account for at least about 50% of the total projected area of the silver halide grains contained in at least one light-sensitive emulsion layer;PWR - (Time).sub.t - Dye (I)wherein PWR represents a group capable of releasing -(Time).sub.t -Dye upon being reduced; Time represents a group capable of releasing Dye through a subsequent reaction after being released as -(Time).sub.
    Type: Grant
    Filed: September 16, 1993
    Date of Patent: July 25, 1995
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Munehisa Fujita, Shigeharu Urabe
  • Patent number: 5427901
    Abstract: A heat-developable color light-sensitive material comprising a support having thereon at least three silver halide emulsion layers each sensitive to a different spectral wavelength region, one silver halide emulsion layer or a light-insensitive layer adjacent thereto containing a yellow dye-providing compound, a second silver halide emulsion layer or a light-insensitive layer adjacent thereto containing a magenta dye-providing compound and a third silver halide emulsion layer or a light-insensitive layer adjacent thereto containing a cyan dye-providing compound; at least one of said silver halide emulsion layers having a maximum spectral sensitivity at a wavelength of at least 700 nm and a spectral sensitivity at a wavelength 20 nm longer than said maximum spectral sensitivity wavelength of at most 1/10 of said maximum spectral sensitivity.
    Type: Grant
    Filed: January 3, 1994
    Date of Patent: June 27, 1995
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Hiroshi Arakatsu, Yoshio Inagaki, Hiroyuki Ozaki, Takanori Hioki
  • Patent number: 5380634
    Abstract: The synthesis and the application of new dyes is described, said new dyes being incorporated in non-migratory state in hydrophilic colloid layers of photographic materials wherefrom they can be rapidly removed after being quickly decolourized in alkaline aqueous liquids used in the processing of said materials. The filter dyes have an ester function or a derivative therefrom as a substituent at the mono- or trimethine chain.
    Type: Grant
    Filed: September 10, 1993
    Date of Patent: January 10, 1995
    Assignee: Agfa-Gevaert, N.V.
    Inventors: Eric Kiekens, Paul Callant
  • Patent number: 5364745
    Abstract: A photographic element including a support bearing a silver halide photographic emulsion, at least one color-forming coupler and a masking coupler, wherein said masking coupler is represented by the formula A:COUP--LINK--DYE (A)wherein COUP is a coupler moiety;LINK is any group releasable or cleavable from COUP by coupling with an oxidized developing agent during photographic processing; and DYE is an azoaniline dye and preferably an azoaniline dye blocked at the nitrogen-inclusive auxochromic site.
    Type: Grant
    Filed: December 19, 1991
    Date of Patent: November 15, 1994
    Assignee: Eastman Kodak Company
    Inventors: Jared B. Mooberry, Stephen P. Singer, James J. Seifert, Robert J. Ross, Daniel L. Kapp
  • Patent number: 5354650
    Abstract: Photographic elements are described which contain a release compound that during photographic processing provides an imagewise distribution of a photographically inert compound which can react with a uniform distribution of a second compound contained in the element to form a photographically active compound.
    Type: Grant
    Filed: November 5, 1993
    Date of Patent: October 11, 1994
    Assignee: Eastman Kodak Company
    Inventors: David T. Southby, Daniel L. Kapp, Wojciech Slusarek, Louis E. Friedrich, Zbyslaw R. Owczarczyk, Xiqiang Yang