Mixture Of Couplers Patents (Class 430/549)
  • Patent number: 7465534
    Abstract: A silver halide emulsion containing silver halide grains with a silver chloride content of at least 95 mole %, being sensitized with selenium and gold, and further containing at least two compounds each having a function of oxidizing metallic silver clusters; a silver halide photographic material containing the same; and a silver halide photographic material having red-, green, and blue-sensitive silver halide emulsion layers, wherein one of the emulsion layers contains a silver halide emulsion with a silver chloride content of at least 95 mole %, and the silver halide emulsion contains a selenium compound and a metal complex of formula (D1); [MD1XD1nLD1(6-n)]m??formula (D1) wherein MD1 represents Cr, Mo, Re, Fe, Ru, Os, Co, Rh, Pd, or Pt; XD1 represents a halogen ion; LD1 represents a ligand other than XD1; n represents 3, 4, 5, or 6; and m represents 4-, 3-, 2-, 1-, 0 or 1+.
    Type: Grant
    Filed: February 7, 2007
    Date of Patent: December 16, 2008
    Assignee: FUJIFILM Corporation
    Inventors: Katsuhisa Ohzeki, Hiroyuki Suzuki, Toshihiro Kariya
  • Patent number: 7022441
    Abstract: Silver-free, aqueous-based direct thermographic materials are designed to have image tone with near neutral density. Without the use of organic silver salts containing reducible silver ions, the image is formed using a color developing agent precursor that releases a color developing agent when heated to a temperature of at least 80° C., a combination of cyan, yellow and magenta dye-forming color couplers that provide cyan, yellow, and magenta dyes, and a substituted or unsubstituted benzoquinone as an oxidizing agent. No silver metal or silver ions are purposely added to these materials. This combination of components provides a means for controlling image tone without reliance upon conventional toning agents.
    Type: Grant
    Filed: February 25, 2004
    Date of Patent: April 4, 2006
    Assignee: Eastman Kodak Company
    Inventors: Joe E. Maskasky, Victor P. Scaccia
  • Patent number: 6962763
    Abstract: Silver-free, aqueous-based direct thermographic materials are designed to have image tone with near neutral density. Without the use of organic silver salts containing reducible silver ions, the image is formed using a color developing agent precursor that releases a color developing agent when heated to a temperature of at least 80° C., a combination of cyan, yellow and magenta dye-forming color couplers that provide cyan, yellow, and magenta dyes, and a hindered-amine N-oxyl as an oxidizing agent. No silver metal or silver ions are purposely added to these materials. This combination of components provides a means for controlling image tone without reliance upon conventional toning agents.
    Type: Grant
    Filed: February 25, 2004
    Date of Patent: November 8, 2005
    Assignee: Eastman Kodak Company
    Inventors: Joe E. Maskasky, Victor P. Scaccia
  • Patent number: 6893809
    Abstract: This invention relates to a negative silver halide photographic element comprising a support and a silver halide imaging layer containing a light sensitive silver halide imaging emulsion, said silver halide imaging layer further comprising a separately precipitated non-imaging intentionally fogged fine grain emulsion and an electron transfer agent releasing compound represented by formula (I): CAR1-(L)n-ETA??(I) wherein: CAR1 is a carrier moiety which is capable of releasing -(L)n-ETA on reaction with oxidized developing agent; L is a divalent linking group, n is 0, 1 or 2; and ETA is a releasable electron transfer agent, and (optionally) a development accelerator releasing compound represented by the formula (II): CAR2—(SAM)-NX1—NX2X3??(II) wherein: CAR2 is a carrier moiety which is capable of releasing —(SAM)-NX1—NX2X3 on reaction with oxidized developing agent; SAM is a silver absorbable moiety attached to the carrier moiety and is released on reaction with oxidized development agent; and —NX1—NX2X
    Type: Grant
    Filed: September 16, 2002
    Date of Patent: May 17, 2005
    Assignee: Eastman Kodak Company
    Inventors: Kenneth J. Reed, James A. Friday, John E. Keevert, Stephen P. Singer, Mary C. Brick
  • Patent number: 6818388
    Abstract: A silver halide color photographic photosensitive material comprising, on a reflective support, at least one yellow-coloring photosensitive silver halide emulsion layer, at least one magenta-coloring photosensitive silver halide emulsion layer, at least one cyan-coloring photosensitive silver halide emulsion layer and at least one non-photosensitive, non-coloring hydrophilic colloid layer. Reflective density A(&lgr;) at a wavelength &lgr; at an unexposed portion of the material after a color development treatment is 0.08 or less for 450 nm, 0.10 or less for 550 nm, and 0.08 or less for 650 nm. Alternatively, chromaticity at the unexposed portion of the material after the color development treatment satisfies the condition: 91≦L*≦96, 0≦a*≦2.0, −9.0≦b*≦−3.0. Also provided is a process for forming an image using the silver halide color photographic photosensitive material.
    Type: Grant
    Filed: September 4, 2003
    Date of Patent: November 16, 2004
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Toshiyuki Makuta, Shin Soejima, Hiroyuki Yoneyama
  • Patent number: 6756188
    Abstract: This invention relates to a photographic element comprising a support and at least two silver halide emulsion layers further comprising, an electron transfer agent releasing compound represented by the formula (I): CAR1—(L)n—ETA  (I) wherein: CAR1 is a carrier moiety which is capable of releasing —(L)n-ETA on reaction with oxidized developing agent; L is a divalent linking group, n is 0, 1 or 2; and ETA is a releasable 1-aryl-3-pyrazolidinone electron transfer agent having a calculated log partition coefficient (c log P) greater than or equal to 2.40 and the total sum of the Hammett sigma(para) values of the substituents on the 1-aryl ring is 0.
    Type: Grant
    Filed: September 16, 2002
    Date of Patent: June 29, 2004
    Assignee: Eastman Kodak Company
    Inventors: John E. Keevert, Stephen P. Singer, Kenneth J. Reed, Kenneth J. Lushington, Mary C. Brick, James A. Friday
  • Patent number: 6451517
    Abstract: A silver halide color photographic lightsensitive material includes at least one emulsion layer on a support. At least one of the emulsion layers contains a coupler represented by formula (1) below and a coupler represented by formula (2) below at a molar ratio of 1:9 to 9:1. In formulas (1) and (2), each of R1, R2, R3, and R4 independently represents a hydrogen atom or a substituent. Each of X1 and X2 represents a hydrogen atom or a group capable splitting off by coupling with the oxidized form of a developing agent. At least one of X1 and X2 is a hydrogen atom.
    Type: Grant
    Filed: November 17, 2000
    Date of Patent: September 17, 2002
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Hiroshi Fukuzawa, Hisashi Mikoshiba, Yoshio Shimura
  • Patent number: 6426178
    Abstract: The invention relates to a photographic element for forming neutral images comprising a cyan dye-forming coupler, a magenta dye-forming coupler of formula wherein Ra and Rb represents H or a substituent; X is hydrogen or a coupling-off group; Za, Zb, and Zc are a substituted methine group, ═N—, ═C—, or —NH—; and yellow dye-forming coupler of formula,  wherein R5 is an alkoxy group with more than one carbon atom, aryloxy, anilino, arylthio, alkylthio, or dialkylamino groups linked to the anilide phenyl ring by oxygen, sulfur or nitrogen; R6 is selected from hydrogen, halogen, alkoxycarbonyl(—CO2R), carbamoyl(—CONRR′), carbonamido(—NRCOR′), sulfonate(—OSO2R), sulfamoyl (—SO2NRR′), sulfonamido(—NRSO2R′), or sulfonyl(—SO2R); R and R′ may be hydrogen, alkyl or aryl groups; q is 1 to 4; R7 is alkyl, cyclic, or multicyclic alky, aryl, heterocyclic, heteroaromatic, and
    Type: Grant
    Filed: August 7, 2000
    Date of Patent: July 30, 2002
    Assignee: Eastman Kodak Company
    Inventors: Michael R. Roberts, Kurt M. Schroeder, Frank D. Coms
  • Patent number: 6410217
    Abstract: A heat-developable color light-sensitive material which contains at least, on a support, a light-sensitive silver halide emulsion, a binder, and a dye-providing compound, wherein the light-sensitive material contains at least one compound represented by formula (I) in, for example, a protective layer: formula (I) wherein R1 is a chlorine atom or an alkoxy group, R2 is an acylamino group or an alkoxycarbonyl group, R11 is a hydrogen atom or an alkyl group; R12 and R13, which are the same or different from, each are a hydrogen atom, an alkyl group or an alkoxy group.
    Type: Grant
    Filed: March 1, 2001
    Date of Patent: June 25, 2002
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Kazuki Uehara, Nobuhiro Nishita
  • Patent number: 6383728
    Abstract: A color photographic silver halide material having a support and at least one photosensitive silver halide emulsion layer which is associated with a cyan coupler of the formula (I): in which R1, R2, R3, Z1, Y1 and n have the meaning stated in the description, is distinguished by elevated dye stability of the dye produced from the coupler by chromogenic processing.
    Type: Grant
    Filed: December 12, 2000
    Date of Patent: May 7, 2002
    Assignee: Agfa-Gevaert
    Inventors: Jörg Hagemann, Jan Haller, Günter Helling
  • Patent number: 6337176
    Abstract: A silver halide color photographic lightsensitive material comprising a support and, superimposed thereon, at least one red-sensitive silver halide emulsion layer, at least one green-sensitive silver halide emulsion layer and at least one blue-sensitive silver halide emulsion layer, wherein each of the at least one red-sensitive emulsion layer, at least one green-sensitive emulsion layer and at least one blue-sensitive emulsion layer contains a silver halide emulsion whose silver chloride content is in the range of 50 to 100 mol %, and at least one layer of the lightsensitive material contains a compound represented by formula: Cp—(L)n—B   (I).
    Type: Grant
    Filed: September 29, 2000
    Date of Patent: January 8, 2002
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Keisuke Matsumoto, Takayuki Ito
  • Publication number: 20010038982
    Abstract: A heat-developable color light-sensitive material which contains at least, on a support, a light-sensitive silver halide emulsion, a binder, and a dye-providing compound, wherein the light-sensitive material contains at least one compound represented by formula (I) in, for example, a protective layer: formula (I) 1
    Type: Application
    Filed: March 1, 2001
    Publication date: November 8, 2001
    Inventors: Kazuki Uehara, Nobuhiro Nishita
  • Patent number: 6261756
    Abstract: The present invention refers to a light-sensitive silver halide multilayer color photographic element having a support base and coated thereon blue-, green- and red-sensitive silver halide emulsion layers respectively associated with non-diffusing yellow, magenta and cyan dye-forming couplers, wherein at least one green-sensitive layer contains a 2-equivalent 3-anilino-4-phenylthio-5-pyrazolone magenta coupler and a 4-(4-hydroxy-phenylazo)-5-pyrazolone colored magenta coupler. The multilayer color photographic element of the present invention presents an improved speed and contrast, without a detrimental effect on the other sensitometric properties, such as Dmin and Dmax.
    Type: Grant
    Filed: May 23, 2000
    Date of Patent: July 17, 2001
    Assignee: Terrania, S.p.A.
    Inventors: Raffaella Biavasco, Emilio Prosperi, Roberto Sardelli
  • Patent number: 6261755
    Abstract: The invention provides a photographic element comprising at least one light-sensitive silver halide emulsion layer having associated therewith: (A) a phenolic cyan dye-forming narrow bandwidth “NB coupler”; (B) a phenolic cyan dye-forming coupler of formula (II): wherein: R3 is an unsubstituted or substituted alkyl or aryl group or a 5-10 membered heterocyclic ring which contains one or more heteroatoms selected from nitrogen, oxygen and sulfur, which ring is unsubstituted or substituted; R4 is an unsubstituted or substituted alkyl group; R5 is hydrogen, halogen or an unsubstituted or substituted alkyl or aryl group or a 5-10 membered heterocyclic ring which contains one or more heteroatoms selected from nitrogen, oxygen and sulfur, which ring is unsubstituted or substituted; and Z is a hydrogen atom or a group which can be split off by the reaction of the coupler with an oxidized color-developing agent; and (C) a stabilizer of formula (III) wherein: eac
    Type: Grant
    Filed: February 28, 2000
    Date of Patent: July 17, 2001
    Assignee: Eastman Kodak Company
    Inventors: Danuta Gibson, James S. Honan, Thomas A. Rosiek
  • Patent number: 6251578
    Abstract: A photographic element comprises: a support and, coated on the support, a plurality of hydrophilic colloid layers, including radiation-sensitive silver halide emulsion layers, forming layer units for separately recording blue, green and red exposures, wherein, the red recording layer unit is comprised of at least one green-red sensitive emulsion having a peak dyed absorptance of between about 525 and about 600 nm, an overall half-peak absorptance bandwidth of between about 70 and about 150 nm, and a ratio of the bandwidths at 80% of peak absorptance to 50% of peak absorptance of greater than or equal to about 0.25. In preferred embodiments of the invention, the photographic element is especially suited for more accurately recording scenes according to the human visual system.
    Type: Grant
    Filed: November 3, 2000
    Date of Patent: June 26, 2001
    Assignee: Eastman Kodak Company
    Inventors: Lois A. Buitano, Allan F. Sowinski, Steven G. Link
  • Patent number: 6220925
    Abstract: A silver halide color photographic light-sensitive material comprising a support having provided thereon at least one hydrophilic colloid layer, wherein the silver halide color photographic light-sensitive material contains a coupler represented by the formula (1) shown below and a non-color forming colorless cyclic imide compound having a diffusion-resistant group: wherein R1 and R2 each represents an alkyl group or an aryl group; R3, R4 and R5 each represents a hydrogen atom, an alkyl group or an aryl group; Z represents a non-metallic atomic group necessary to form a saturated ring; R6 represents a substituent; X represents a heterocyclic group, a substituted amino group or an aryl group and Y represents a hydrogen atom or a group capable of being released upon color development. The silver halide color photographic light-sensitive material has an excellent color forming property to provide a color image of high maximum color density and good color reproducibility.
    Type: Grant
    Filed: June 2, 1998
    Date of Patent: April 24, 2001
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Naoki Saito, Hisashi Mikoshiba, Masakazu Morigaki, Shin Soejima, Yasuhiro Yoshioka, Osamu Takahashi
  • Patent number: 6218097
    Abstract: A colour photographic silver halide material having a support and at least one photosensitive silver halide emulsion layer which contains a magenta coupler of the formula (I) in which R1 to R3, a, b, c and X have the meaning stated in the description, which material contains a DIR coupler of the formula (II) in which R6 to R11 have the meaning stated in the description, is distinguished by improved processing stability.
    Type: Grant
    Filed: August 30, 1999
    Date of Patent: April 17, 2001
    Assignee: Agfa-Gevaert
    Inventors: Peter Bell, Ralf Büscher, Lothar Rosenhahn, Heinz Wiesen, Ralf Wirowski
  • Patent number: 6174662
    Abstract: A photographic element comprises: (a) a support; and (b) at least one silver halide emulsion layer; wherein said emulsion layer contains (c) at least one magenta dye-forming pyrazolone DIR coupler of structure I; and (d) at least one magenta dye-forming imaging coupler of structure II, structure IIIa or structure IIIb, below: wherein the substituents are as defined in the specification.
    Type: Grant
    Filed: September 21, 1999
    Date of Patent: January 16, 2001
    Assignee: Eastman Kodak Company
    Inventors: Paul B. Merkel, Jerrold N. Poslusny, David A. Steele
  • Patent number: 6171773
    Abstract: A colour photographic material which contains at least one pyrrolo[1,2-b]-1,2,4-triazole cyan coupler of the formula (I) in which R1, X and Y have the meaning stated in the description, is distinguished by excellent reproduction of blue and cyan tones if a 2-equivalent yellow coupler is added to the layer containing the couplers of the formula (I).
    Type: Grant
    Filed: May 4, 1999
    Date of Patent: January 9, 2001
    Assignee: Agfa N.V
    Inventors: Peter Bergthaller, J{umlaut over (u)}rgen Jung, Edgar Draber, Jörg Hagemann, Ulrich Nickel
  • Patent number: 6159674
    Abstract: Disclosed is a color photographic element comprising at least four imaging layers including:a first light sensitive silver halide imaging layer having associated therewith a cyan image dye-forming coupler;a second light sensitive silver halide imaging layer having associated therewith a magenta image dye-forming coupler;a third light sensitive silver halide imaging layer having associated therewith a yellow image dye-forming coupler; anda fourth light sensitive silver halide imaging layer having associated therewith a fourth image dye-forming coupler for which the normalized spectral transmission density distribution curve of the dye formed by the fourth image dye-forming coupler upon reaction with color developer has a CIELAB hue angle, h.sub.ab, of from not less than 355.degree. to not more than 75.degree.. The element provides improved color gamut.
    Type: Grant
    Filed: December 28, 1999
    Date of Patent: December 12, 2000
    Assignee: Eastman Kodak Company
    Inventor: James L. Edwards
  • Patent number: 6156489
    Abstract: A silver halide photographic light sensitive material comprising a transparent support and provided thereon a light sensitive layer containing a yellow coupler, a magenta coupler and a cyan coupler to form a monochromatic image upon color development after exposure, wherein a relative coupling rate of the magenta coupler with an oxidation product of a color developing agent is higher than that of the yellow or cyan coupler.
    Type: Grant
    Filed: June 9, 1998
    Date of Patent: December 5, 2000
    Assignee: Konica Corporation
    Inventors: Toshihiko Iwasaki, Masaru Iwagaki
  • Patent number: 6132945
    Abstract: A silver halide color photographic material comprising a support having provided thereon at least one silver halide emulsion layer, wherein the silver halide color photographic material contains a coupler represented by formula (1) shown below and a non-color forming colorless carboxylic acid compound having a diffusion-resistant group or a salt thereof: ##STR1## wherein R.sup.1 and R.sup.2 each represents an alkyl group or an aryl group; R.sup.3, and R.sup.4 and R.sup.5 each represents a hydrogen atom, an alkyl group or an aryl group; Z represents a non-metallic atomic group necessary to form a saturated ring; R.sup.6 represents a substituent; X represents a heterocyclic group, a substituted amino group or an aryl group and Y represents a hydrogen atom or a group capable of being released upon color development.The silver halide color photographic material has an excellent color forming property to provide a color image of high maximum color density and good color reproducibility.
    Type: Grant
    Filed: February 5, 1998
    Date of Patent: October 17, 2000
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Naoki Saito, Masakazu Morigaki, Yasuhiro Yoshioka, Shin Soejima, Osamu Takahashi, Hisashi Mikoshiba
  • Patent number: 6127107
    Abstract: A photographic recording material for use in redox amplification comprises a support having thereon a plurality of emulsion layers, each emulsion layer containing a color-forming coupler, and wherein the activity of the couplers is from 45 to 70% as measured by the citrazinic acid method. These materials may be developed by a redox development step which may be followed by a bleach-fix step without any intervening step. Staining is eliminated with the use of these photographic materials.
    Type: Grant
    Filed: February 2, 2000
    Date of Patent: October 3, 2000
    Assignee: Eastman Kodak Company
    Inventors: Adrian J. Codling, John R. Fyson
  • Patent number: 6114103
    Abstract: This invention relates to a photographic element comprising a support and at least two silver halide emulsion layers wherein at least one emulsion layer contains an electron transfer agent releasing compound represented by the formula:CAR--(L).sub.n --ETAwherein:CAR is a carrier moiety which is capable of releasing --(L)n--ETA on reaction with oxidized developing agent;L is a divalent linking group, n is 0, 1 or 2; andETA is a releasable 1-aryl-3-pyrazolidinone electron transfer agent having a calculated log partition coefficient (c log P) greater than or equal to 2.40 bonded to L or CAR through either the nitrogen atom in the 2-position or the oxygen attached to the 3-position of the pyrazolidinone ring; and at least one soluble mercaptan releasing compound.
    Type: Grant
    Filed: December 30, 1998
    Date of Patent: September 5, 2000
    Assignee: Eastman Kodak Company
    Inventors: James A. Friday, Sharon R. Lunt, Scott C. Sutton
  • Patent number: 6114080
    Abstract: An aqueous developable photographic element for forming neutral images comprising balanced cyan, magenta, and yellow heat-diffusible-dye-forming couplers in one or more image forming layers, and further comprising sensitized silver halide, a thermal solvent for nonaqueous, thermal dye-diffusion transfer, and hydrophilic binder, each independently in one or more image forming layers, an integral receiver layer for dye mordanting during nonaqueous, thermal dye-diffusion transfer, and one and only one dimensionally stable support, where said receiver layer is intermediate said support and image forming layers, and wherein said receiver layer and said support may be mechanically separated from said image forming layers by opposing forces is disclosed. Processes for forming a neutral photographic image using such elements and using elements that are similar, but lacking an integral receiving layer, are also disclosed.
    Type: Grant
    Filed: December 21, 1993
    Date of Patent: September 5, 2000
    Assignee: Eastman Kodak Company
    Inventors: John Texter, Roland George Willis
  • Patent number: 6110657
    Abstract: This invention relates to a photographic element comprising a support and at least two silver halide emulsion layers wherein at least one emulsion layer contains an electron transfer agent releasing compound represented by the formula:CAR--(L).sub.n --ETAwherein:CAR is a carrier moiety which is capable of releasing --(L)n--ETA on reaction with oxidized developing agent;L is a divalent linking group, n is 0, 1 or 2; andETA is a releasable 1-aryl-3-pyrazolidinone electron transfer agent having a calculated log partition coefficient (c log P) greater than or equal to 2.40 bonded to L or CAR through either the nitrogen atom in the 2-position or the oxygen attached to the 3-position of the pyrazolidinone ring.
    Type: Grant
    Filed: December 30, 1998
    Date of Patent: August 29, 2000
    Assignee: Eastman Kodak Company
    Inventors: Sharon R. Lunt, Scott C. Sutton, Louis E. Friedrich, David T. Southby
  • Patent number: 6096493
    Abstract: Disclosed is a photographic element comprising a light-sensitive silver halide emulsion layer having associated therewith a certain magenta dye forming coupler and a light-sensitive silver halide emulsion layer having associated therewith a certain yellow dye-forming coupler. The element exhibits improved dye fade and equal or better red color gamut than that obtained using comparisons.
    Type: Grant
    Filed: August 14, 1998
    Date of Patent: August 1, 2000
    Assignee: Eastman Kodak Company
    Inventors: Leslie Shuttleworth, Rakesh Jain, John W. Harder
  • Patent number: 6030758
    Abstract: A silver halide light sensitive photographic material is disclosed, comprising a support having thereon a red-sensitive silver halide emulsion layer, a green-sensitive silver halide emulsion layer and a blue-sensitive silver halide emulsion layer, wherein at least one of the red-sensitive, green-sensitive and blue-sensitive layers comprises a high-speed silver halide emulsion layer, a medium-speed silver halide emulsion layer and a low-speed silver halide emulsion layer, the low-speed layer contains a dye forming coupler having coupling reactivity higher than that of a coupler contained in the mdium speed layer.
    Type: Grant
    Filed: August 12, 1998
    Date of Patent: February 29, 2000
    Assignee: Konica Corporation
    Inventor: Makoto Nomiya
  • Patent number: 6010839
    Abstract: A multilayer silver halide color photographic element is disclosed comprising a support bearing a light-sensitive silver halide emulsion layer and a non-diffusible yellow-colored magenta dye-forming masking coupler of the following formula ##STR1## wherein COUP is a magenta dye-forming coupler having the azo group attached to its coupling position; ARYL represents an aromatic group, including optionally further substituted phenyl, naphthyl or heteroaryl groups; m represents an integer of from 1 to 4; each L.sup.1 represents a divalent linking group, preferably --O(CH.sub.2).sub.y --, --NHCO(CH.sub.2).sub.y --, or --NRCO(CH.sub.2).sub.y --, where R represents an alkyl or aryl group and y represents an integer from 1 to 4; each k is either 0 or 1; each L.sup.2 represents --NHSO.sub.2 --, --NHCO--, --SO.sub.2 NH--, or --CONH--, preferably at least one L.sup.2 group being --NHSO.sub.2 -- or --SO.sub.2 NH--, more preferably --NHSO.sub.2 --; each Z represents --SO.sub.3 M or --PO.sub.
    Type: Grant
    Filed: June 26, 1998
    Date of Patent: January 4, 2000
    Assignee: Eastman Kodak Company
    Inventors: Michael W. Crawley, Krishnan Chari, Allan F. Sowinski
  • Patent number: 6007975
    Abstract: A silver halide color photographic light-sensitive material is disclosed. The red sensitive silver halide emulsion layer contains at least one cyan coupler represented by the formula (1) or (2) and at least one cyan coupler represented by formula C-1, ##STR1## the symbols are defined in the specification.
    Type: Grant
    Filed: January 8, 1998
    Date of Patent: December 28, 1999
    Assignee: Konica Corporation
    Inventors: Atsushi Tomotake, Yoshiko Iwai
  • Patent number: 5989798
    Abstract: A photographic element comprises: (a) a support; and (b) at least one silver halide emulsion layer; wherein said emulsion layer contains (c) at least one magenta dye-forming pyrazolone DIR coupler of structure I; and (d) at least one magenta dye-forming imaging coupler of structure II, structure IIIa or structure IIIb, below: ##STR1## wherein the substituents are as defined in the specification.
    Type: Grant
    Filed: December 19, 1997
    Date of Patent: November 23, 1999
    Assignee: Eastman Kodak Company
    Inventors: Paul B. Merkel, Jerrold N. Poslusny, David A. Steele
  • Patent number: 5989801
    Abstract: The present invention provides a silver halide photographic material and an image forming method for obtaining a monochrome image using a dye image even if it is treated with a color developer free of benzyl alcohol; a photographic property of the monochrome image is less deteriorated by a toxic gas such as formaldehyde and an increase in sensitization and fog with time is improved.
    Type: Grant
    Filed: August 26, 1998
    Date of Patent: November 23, 1999
    Assignee: Oriental Photo Industrial Co., Ltd.
    Inventors: Toshio Hirosawa, Kouji Katsube, Toshiko Nakamura, Yoshiro Hayafuchi, Katsuyuki Arasawa
  • Patent number: 5965341
    Abstract: The invention provides a photographic element comprising a silver halide emulsion layer sensitive to green light having associated therewith (a) a 1-aryl-3-anilino-4-benzotriazolyl-5-pyrazolone magenta dye-forming DIR coupler of a particular formula, and (b) a 1-aryl-3-anilino-4-phenylthio-5-pyrazolone magenta image dye forming coupler of a particular formula. The element of the invention provides an improved interimage of a green sensitized layer in a multicolor silver halide photographic element.
    Type: Grant
    Filed: June 12, 1997
    Date of Patent: October 12, 1999
    Assignee: Eastman Kodak Company
    Inventors: Paul B. Merkel, Jerrold N. Poslusny, Ronald E. Leone
  • Patent number: 5962205
    Abstract: The present invention provides a silver halide color photographic light-sensitive material which has a high sensitivity and a high image quality, and a method and apparatus for forming an image by use of the light-sensitive material. The light-sensitive material comprises a support having provided thereon three light-sensitive units each having a different color-sensitivity, wherein one of the light-sensitive units is a white-sensitive unit having a spectral sensitivity distribution satisfying the following conditions. The method and apparatus for forming images using the material, in which the material is imagewise-exposed and subject to processing, thereby forming an image, the image is read out by an image pick-up means, then subjected to digital image processing, and three or more color output signals are obtained.0.05.ltoreq.S.sub.450 /S.sub.550 .ltoreq.1.2 and 0.05.ltoreq.S.sub.600 /S.sub.550 .ltoreq.1.2 wherein S.sub.450, S.sub.550 and S.sub.
    Type: Grant
    Filed: October 7, 1997
    Date of Patent: October 5, 1999
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Jun Arakawa, Tooru Matama
  • Patent number: 5942381
    Abstract: A photographic element comprising a silver halide emulsion layer having associated therewith a 1-phenyl-3-anilino-4-benzotriazolyl-5-pyrazolone magenta dye-forming DIR coupler of structure I: ##STR1## wherein: R.sub.1 is hydrogen, chlorine, fluorine or a methyl group;R.sub.2, R.sub.3, and R.sub.4 are individually selected from the group consisting of hydrogen, halogen, alkyl, phenyl, alkoxy, phenoxy, alkylthio, carbonamido, sulfonamido, carbamoyl, alkoxycarbonyl and aryloxycarbonyl groups;R.sub.5 is hydrogen, bromine, chlorine, fluorine, or an alkyl group;R.sub.6 and R.sub.7 are independently selected from the group consisting of hydrogen, halogen, carbonamido, carbamoyl, sulfonamido, sulfamoyl, alkylsulfonyl, arylsulfonyl, alkylsulfoxyl, arylsulfoxyl, sulfonyloxy, alkoxycarbonyl, aryloxycarbonyl, acyloxy, acyl, imido, trifluoromethyl and cyano groups, provided that at least one of R.sub.6 and R.sub.7 is not hydrogen;R.sub.8 and R.sub.
    Type: Grant
    Filed: June 12, 1997
    Date of Patent: August 24, 1999
    Assignee: Eastman Kodak Company
    Inventors: Paul B. Merkel, Ronald E. Leone, Jerrold N. Poslusny
  • Patent number: 5928851
    Abstract: The present invention describes an image dye-forming coupler of formula (I) ##STR1## wherein L is an oxymethylene or oxycarbonyl group; n is 0 or 1; COUP is a coupler moiety and R.sub.1 and R.sub.2 are the same or different and are groups selected such that(a) together with the nitrogen atom a good leaving group is formed;(b) at least one of them contains a PUG linked to an electrophilic center (E); and(c) neither R.sub.1 nor R.sub.2 is a hydrogen atom wherein the coupler is a DIAR coupler from which inhibitor is released from a coupling-off group after a timed delay which results from an additional reaction step. Such delay permits control over the time of release, rate of release and rate of diffusion of a photographically useful group (PUG) without altering the nature of the PUG itself.A method of preparing the coupler is also described wherein the two parts of the molecule can be built up separately and combined in a single reaction allowing ready access to a large variety of possible structures.
    Type: Grant
    Filed: May 28, 1997
    Date of Patent: July 27, 1999
    Assignee: Eastman Kodak Company
    Inventor: Philip Arthur Allway
  • Patent number: 5922524
    Abstract: A colour photographic recording material having camera sensitivity, possessing on a transparent support at least one silver halide emulsion layer unit which is sensitive to part of the visible spectrum and consists of at least the following constituent layers:a) a spectrally sensitised silver halide emulsion layer containing an effective quantity of a FAR coupler (coupler, which during coupling releases groups producing fogging nuclei) and optionally a colour coupler, the latter during the colour development process coupling with a dye of which the colour is complementary to the spectral sensitisation of layer a), andb) a fine-grained silver halide emulsion layer having low light-sensitivity, of which the silver halide grains are not spectrally sensitised, being a layer adjacent to layer a),with layer b) containing a colour coupler which during the colour development process couples with a dye of which the colour is complementary to the spectral sensitisation of layer a) and the molar quantity of colour coupl
    Type: Grant
    Filed: February 3, 1997
    Date of Patent: July 13, 1999
    Assignee: Agfa-Gevaert AG
    Inventors: Ralf Buscher, Peter Bell, Hans-Ulrich Borst, Jorg Siegel, Johannes Willsau, Heinrich Odenwalder
  • Patent number: 5914225
    Abstract: A color negative photographic element is disclosed that a pair of fast green and red recording layer units coated to receive exposing radiation prior to at least one pair of slow green and red recording layer units. The green recording layer units together contain at least 1.0 g/m.sup.2 of silver with at least 60 percent of the silver in the green recording layer units being in a location other than the fast green recording layer unit, and the red recording layer units together contain at least 1.8 g/m.sup.2 of silver with at least 70 percent of the silver in the red recording layer units being in a location other than the fast red recording layer unit. When development times are reduced to 2 minutes or less during processing increased red speed, reduced granularity of the green record, and increased sharpness of the red record are observed.
    Type: Grant
    Filed: January 28, 1998
    Date of Patent: June 22, 1999
    Assignee: Eastman Kodak Company
    Inventor: John H. Becher
  • Patent number: 5888716
    Abstract: The invention provides a photographic element comprising a red light sensitive silver halide emulsion layer having associated therewith a cyan dye forming coupler having Formula (I) and a green light sensitive silver halide emulsion layer having associated therewith a magenta dye forming coupler having formula IIA or IIB: ##STR1## wherein the substituents are as defined herein.
    Type: Grant
    Filed: August 20, 1996
    Date of Patent: March 30, 1999
    Assignee: Eastman Kodak Company
    Inventors: James Lawrence Edwards, Philip T. S. Lau, Stanley Wray Cowan
  • Patent number: 5885760
    Abstract: A color photographic recording material having at least one silver halide emulsion layer unit containing color coupler, which unit comprises at least two adjacent silver halide emulsion partial layers of the spectral sensitivity concerned, one of which is more sensitive and one less sensitive, contains in a reactive association with at least one more sensitive silver halide emulsion partial layer having a comparatively low color coupler content relative to the silver halide content, a compound (or a precursor compound thereof), which is capable under chromogenic development conditions of forming a substantially colorless, diffusible coupling product with the color developer oxidation product, which coupling product is capable under chromogenic development conditions in the presence of an oxidising agent of forming a dye with a color coupler, with transfer of the residue originating from the color developer.On chromogenic development, color images having improved grain are obtained.
    Type: Grant
    Filed: August 5, 1997
    Date of Patent: March 23, 1999
    Assignee: Agfa-Gevaert AG
    Inventors: Peter Bergthaller, Jurgen Strobach
  • Patent number: 5866311
    Abstract: The present invention concerns a color reversible photographic product In particular, the present invention concerns a new photographic product which has a increase in the exposure latitude of one of the silver halide emulsion layers with which a dye-forming coupler is associated without changing the chromatic balance. This increase in the exposure latitude makes it possible to improve the details of the dye image.
    Type: Grant
    Filed: September 12, 1997
    Date of Patent: February 2, 1999
    Assignee: Eastman Kodak Company
    Inventors: Gerard M. Droin, Yannick Begel
  • Patent number: 5851741
    Abstract: The present invention provides a method for forming color images by processing in a short period of time color photographic materials containing at least one oil-soluble coupler with a color developer which does not substantially contain benzyl alcohol, wherein a silver halide color photographic material having at least one silver halide emulsion layer on a reflective support, the emulsion layer containing a dispersion of oleophilic fine grains having a mean grain size of 0.25 .mu.m or less, which contain a coupler capable of forming a dye after having been coupled with an oxidation product of an aromatic primary amine developing agent, and at least one high boiling organic solvent having a dielectric constant of 4.00 or more (25.degree. C., 10 KHz). The photographic material is imagewise exposed and then subjected to development with a color developer which contains an aromatic primary amine developing agent but does not substantially contain benzyl alcohol for 2 minutes and 30 seconds or less.
    Type: Grant
    Filed: September 6, 1994
    Date of Patent: December 22, 1998
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Osamu Takahashi, Hideaki Naruse, Nobuo Sakai
  • Patent number: 5830632
    Abstract: Photographic element are described comprising a support bearing a photographic silver halide emulsion layer having associated therewith a micro-precipitated dispersion of a high dye-yield coupler having the formula:COUP--(T).sub.m --L--DYEwhere COUP is the coupler moiety of the coupler capable of reacting at the coupling position with oxidized color developer to form a first dye, T is one or more timing groups with m=0, 1 or 2, L is a linking group selected from the group consisting of --OC(O)--, --OC(S)--, --SC(O)--, --SC(S)--, or --OC(.dbd.NSO.sub.2 R)--, where R is a substituted or unsubstituted alkyl or aryl group, and DYE is a second dye or precursor thereof comprising an electrically neutral chromophore. The invention also provides a photographic coupler dispersion, a photographic silver halide emulsion, and a process for forming an image in a photographic element in accordance with the invention.
    Type: Grant
    Filed: October 31, 1996
    Date of Patent: November 3, 1998
    Assignee: Eastman Kodak Company
    Inventors: Krishnan Chari, David Thomas Southby, David Hoke
  • Patent number: 5789146
    Abstract: Coupler dispersions comprising an aqueous medium having dispersed therein an organic phase comprising (i) a primary photographic coupler comprising a first ballasting group containing at least 5 carbon atoms and (ii) an auxiliary photographic coupler comprising a second ballasting group, wherein the primary coupler and the auxiliary coupler are present in the dispersion at a weight ratio of from 4:1 to 99:1 and the auxiliary coupler differs from the primary coupler solely in that the second ballast group contains 2 or more additional carbon atoms and associated hydrogen atoms relative to the first ballasting group.
    Type: Grant
    Filed: August 15, 1996
    Date of Patent: August 4, 1998
    Assignee: Eastman Kodak Company
    Inventors: David Darrell Miller, Paul Barrett Merkel, Raymond Peter Scaringe
  • Patent number: 5770354
    Abstract: Silver halide photographic element comprising a support having coated thereon red-, green- and blue-sensitive silver halide emulsion layers comprising, respectively, cyan, magenta and yellow dye-forming couplers, wherein the blue-sensitive emulsion layer comprises at least two blue-sensitive emulsion layers, the uppermost of which has the highest-sensitivity and the lowermost of which has the lowest sensitivity, characterized in that the uppermost highest sensitivity blue-sensitive silver halide emulsion layer comprises a yellow dye-forming coupler and a cyan dye-forming coupler.
    Type: Grant
    Filed: April 25, 1996
    Date of Patent: June 23, 1998
    Assignee: Imation Corp.
    Inventors: Sergio Massirio, Raffaella Biavasco, Flavio Costa
  • Patent number: 5728511
    Abstract: A silver halide photographic material is provided which exhibits nearly equal sensitivities and gamma values with respect to yellow, magenta and cyan to form a black-and-white image of neutral black or sepia tone, even when it is processed with a color developer free from benzyl alcohol.The silver halide photographic material is made up of a substrate and at least one silver halide emulsion layer formed on the substrate. The silver chloride content of silver halide grains constituting the silver halide emulsion layer is 95 mole % or above, the silver halide emulsion is spectrally sensitized by a specific sensitizing dye, and the silver halide emulsion layer contains a yellow coupler, a magenta coupler and a cyan coupler. The image-forming process is characterized by developing the silver halide photographic material with a color developer substantially free from benzyl alcohol.
    Type: Grant
    Filed: March 5, 1997
    Date of Patent: March 17, 1998
    Assignee: Oriental Photo Industrial Co., Ltd.
    Inventors: Toshio Hirosawa, Kouji Katsube, Junichi Komiyama, Yoshiro Hayafuchi, Toshiko Nakamura
  • Patent number: 5667946
    Abstract: The invention provides a light sensitive photographic silver halide emulsion layer having associated therewith a magenta coupler having formula I: ##STR1## wherein: R represents a ballasted monosubstituted amino group which enables the coupler to form, upon development with 4-amino-3-methyl-N-ethyl-N-(2-hydroxyethyl)aniline sulfate developing agent, a magenta dye having a wavelength of maximum absorbance of 545 nm or greater; andX represents hydrogen or a coupling-off group. The resulting dye has an improved spectral absorption curve.
    Type: Grant
    Filed: April 30, 1996
    Date of Patent: September 16, 1997
    Assignee: Eastman Kodak Company
    Inventors: Jane Sarah Boff, Bernard Arthur Clark, Paul Louis Stanley, Christina Mary Watts, Stephen Paul Singer
  • Patent number: 5641613
    Abstract: The invention provides a photographic element comprising a support bearing a light-sensitive photographic silver halide layer containing (1) a bicyclic azole coupler (2) an azopyrazolone masking coupler and (3) a low impact development inhibitor releasing (LIDIR) coupler having at least one hydrogen atom at the coupling site and which does not substantially reduce contrast in the layer in which it is coated.
    Type: Grant
    Filed: January 25, 1996
    Date of Patent: June 24, 1997
    Assignee: Eastman Kodak Company
    Inventors: Jane Sarah Boff, Stephen Paul Singer
  • Patent number: 5622818
    Abstract: A multilayer silver halide color photographic element comprising a support bearing a light-sensitive silver halide emulsion layer and a non-diffusible yellow-colored magenta dye-forming masking coupler wherein the masking coupler is a 2'-hydroxy-5'-substituted-4-phenylazo-5-pyrazolone. The masking coupler has good coupling activity and desirable hues, and can be obtained in good yields by simple syntheses.
    Type: Grant
    Filed: November 29, 1995
    Date of Patent: April 22, 1997
    Assignee: Eastman Kodak Company
    Inventors: Daniel L. Kapp, Janet N. Younathan, Robert J. Ross, James P. Merrill
  • Patent number: 5599656
    Abstract: Photographic elements are disclosed having a first coupler represented by the formula:COUP.sub.1 -T-INHwhereinCOUP.sub.1 is a coupler moiety,T is a timing group bonded to INH through a substituted or unsubstituted methylene group contained in T and bonded to COUP.sub.1 through an O, S, or N atom contained in T,and INH is a development Inhibitor moiety, andwherein the T-INH group is able to undergo electron transfer along a conjugated system therein to cleave INH after T-INH is cleaved from COUP.sub.1, anda second coupler represented by the formula:COUP.sub.2 -(TIME).sub.n -S-R.sub.1 -R.sub.2wherein COUP.sub.2 is a coupler moiety, TIME is a timing group, n is 0 or 1, R.sub.1 is a divalent linking group that does not include a heterocyclic ring attached directly to S, and R.sub.2 is a water solubilizing group.
    Type: Grant
    Filed: August 6, 1990
    Date of Patent: February 4, 1997
    Assignee: Eastman Kodak Company
    Inventors: Drake M. Michno, Richard P. Szajewski, Stephen P. Singer