Development Inhibitor Releaser (dir) Patents (Class 430/957)
  • Patent number: 7198889
    Abstract: The present invention is directed to a method of forming a positive image in a photothermographic element comprising a potentially negative-working emulsion wherein fog density development is imagewise inhibited in exposed areas of the image upon thermal development, the element further comprising a developer or precursor thereof and an oxidized developer scavenging agent to accelerate development by removing oxidized developer as it is formed during the thermal development step. In one embodiment of the invention, in which a density-inhibiting agent is released during thermal development that inhibits the thermal development of unexposed silver salts in the exposed areas relative to the unexposed areas, the method comprises imagewise exposing the film with a non-solarizing amount of radiation/energy to form a latent image and thermally developing the latent image in a single development step to produce a positive image in the element.
    Type: Grant
    Filed: June 12, 2003
    Date of Patent: April 3, 2007
    Assignee: Eastman Kodak Company
    Inventors: Michael R. Roberts, Paul B. Gilman, Donald L. Black, Kurt M. Schroeder
  • Patent number: 7183024
    Abstract: The present invention is directed to a method of forming a positive image in a photothermographic element comprising a potentially negative-working emulsion wherein fog density development is imagewise inhibited in exposed areas of the image upon thermal development. In one embodiment of the invention, a density-inhibiting agent is released during thermal development which agent inhibits the thermal development of unexposed silver salts in the exposed areas relative to the unexposed areas. The method preferably comprises imagewise exposing the film with a non-solarizing amount of radiation/energy to form a latent image and thermally developing the latent image in a single development step to produce a positive image in the element. The present invention is also directed to a photothermographic element that can be used in the present process in which a positive image characterized by high speed and discrimination is formed when exposed and thermally heated above 150° C.
    Type: Grant
    Filed: June 12, 2003
    Date of Patent: February 27, 2007
    Assignee: Eastman Kodak Company
    Inventors: Michael R. Roberts, Paul B. Gilman, Donald L. Black, Kurt M. Schroeder
  • Patent number: 7175975
    Abstract: This invention relates to a multilayer silver halide photographic element, generally processed with phenylenediamine based developer solutions, comprising a support bearing a cyan dye image-forming unit comprised of at least one red-sensitive silver halide emulsion layer having associated therewith at least one cyan dye-forming coupler, a magenta dye image-forming unit comprising at least one green-sensitive silver halide emulsion layer having associated therewith at least one magenta dye-forming coupler, and a yellow dye image-forming unit comprising at least one blue-sensitive silver halide emulsion layer having associated therewith at least one yellow dye-forming coupler, wherein at least one layer additionally contains a 2-substituted-5-amino-1-napthol DIR according to Formula (I): wherein: X is chosen from among hydrogen, halogen atoms, an alkyl group with 6 carbon atoms or less or a N-substituted carbamoyl group where the N substituent is either an alkyl group with 6 carbon atoms or less or an ar
    Type: Grant
    Filed: August 25, 2005
    Date of Patent: February 13, 2007
    Assignee: Eastman Kodak Company
    Inventors: Stephen P. Singer, Christopher Grote, Robert C. Stewart, John W. Harder, David S. Ross, Janet N. Younathan, Louis Elbert Friedrich
  • 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: 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: 6974662
    Abstract: Improved compounds and base precursors that undergo thermal decomposition are disclosed. Thermal base precursors, and in particular, a novel class of salts of arylsulfonylacetic acids as bleaching agents or promoting for photothermographic use are disclosed. Compositions employing these thermal base precursors are suitable for use in acutance and antihalation systems, bleachable filter dye materials, and in promoting unblocking of various components such as blocked developers, especially in photothermographic elements.
    Type: Grant
    Filed: August 4, 2003
    Date of Patent: December 13, 2005
    Assignee: Eastman Kodak Company
    Inventors: Ramanuj Goswami, Wojciech K. Slusarek, David H. Levy
  • 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: 6929906
    Abstract: A silver halide color photosensitive material comprises at least one light-sensitive silver halide emulsion layer and at least one nonlight-sensitive layer. At least one of the nonlight-sensitive layers contains colloidal silver. The colloidal silver-containing nonlight-sensitive layer or a nonlight-sensitive layer adjacent to the colloidal silver-containing nonlight-sensitive layer contains a compound capable of releasing a development inhibitor or a precursor thereof by a coupling reaction with an oxidized developing agent. At least one layer selected from the group consisting of the light-sensitive silver halide emulsion layer and the nonlight-sensitive layer contains a compound (B), which is a compound having at least three hetero atoms and capable of enhancing the photographic speed of the photosensitive material in comparison to the same photosensitive materials without the compound.
    Type: Grant
    Filed: October 30, 2003
    Date of Patent: August 16, 2005
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Yoshio Ishii, Koji Takaku
  • Patent number: 6924091
    Abstract: A silver halide photographic lightsensitive material comprising a support having thereon at least one lightsensitive silver halide emulsion layer, wherein the lightsensitive material contains at least one compound represented by general formula (I) and at least one photographically useful group-releasing compound represented by general formula (II) or (III) that is capable of forming a compound having substantially no contribution to a dye after its coupling with an oxidized form of a developing agent: (X)k—(L)m—(A—B)n??(I) COUP1—D1??(II) COUP2—C—E—D2??(III) The definitions of the substituents are set forth in the specification.
    Type: Grant
    Filed: January 3, 2002
    Date of Patent: August 2, 2005
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Yoichi Hosoya, Kiyoshi Morimoto, Tadashi Inaba
  • Publication number: 20040175662
    Abstract: A silver halide photographic lightsensitive material comprising a support having thereon at least one lightsensitive silver halide emulsion layer, wherein the lightsensitive material contains at least one compound represented by general formula (I) and at least one photographically useful group-releasing compound represented by general formula (II) or (III) that is capable of forming a compound having substantially no contribution to a dye after its coupling with an oxidized form of a developing agent:
    Type: Application
    Filed: October 9, 2003
    Publication date: September 9, 2004
    Applicant: FUJI PHOTO FILM CO., LTD.
    Inventors: Yoichi Hosoya, Kiyoshi Morimoto, Tadashi Inaba
  • 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
  • Publication number: 20040101791
    Abstract: A silver halide color photosensitive material comprises at least one light-sensitive silver halide emulsion layer and at least one nonlight-sensitive layer. At least one of the nonlight-sensitive layers contains colloidal silver. The colloidal silver-containing nonlight-sensitive layer or a nonlight-sensitive layer adjacent to the colloidal silver-containing nonlight-sensitive layer contains a compound capable of releasing a development inhibitor or a precursor thereof by a coupling reaction with an oxidized developing agent. At least one layer selected from the group consisting of the light-sensitive silver halide emulsion layer and the nonlight-sensitive layer contains a compound (B), which is a compound having at least three hetero atoms and capable of enhancing the photographic speed of the photosensitive material in comparison to the same photosensitive materials without the compound.
    Type: Application
    Filed: October 30, 2003
    Publication date: May 27, 2004
    Applicant: FUJI PHOTO FILM CO., LTD.
    Inventors: Yoshio Ishii, Koji Takaku
  • Publication number: 20040086811
    Abstract: A silver halide color photosensitive material has, on a support, a unit blue-sensitive silver halide emulsion layer, a unit green-sensitive silver halide emulsion layer and a unit red-sensitive silver halide emulsion layer, each comprising two or more light-sensitive layers having the same color sensitivity but differing in speed to each other. The silver halide color photosensitive material contains at least one compound represented by the following general formula (I) or general formula (II); and at least one of the light-sensitive layers contains silver halide grains in which tabular grains each having an aspect ratio of 5.0 or more account for 60% or more of the total projected area of the silver halide grains.
    Type: Application
    Filed: October 21, 2003
    Publication date: May 6, 2004
    Applicant: FUJI PHOTO FILM CO., LTD.
    Inventors: Fumitaka Ueda, Koji Takaku, Ryoji Nishimura, Keisuke Matsumoto, Yoshio Ishii
  • Publication number: 20040063048
    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):
    Type: Application
    Filed: September 16, 2002
    Publication date: April 1, 2004
    Applicant: Eastman Kodak Company
    Inventors: Kenneth J. Reed, James A. Friday, John E. Keevert, Stephen P. Singer, Mary C. Brick
  • Patent number: 6660465
    Abstract: A compound represented by the following formula (I) to (VII): In the formulas, R1 represents an acyl group, cyano group, nitro group, aryl group, heterocyclic residue, alkoxycarbonyl group, aryloxycarbonyl group, carbamoyl group, sulfamoyl group, alkylsulfonyl group, or arylsulfonyl group, which may be substituted, or a cyano or nitro group; R2 represents an alkyl group, aryl group or heterocyclic residue, which may be substituted; R3 represents an aryl group or heterocyclic residue, each of which may be substituted; R4, R6 and R9 represent a substituent; R5, R7 and R8 represent a hydrogen atom or substituent; n represents an integer of 0 to 2, wherein when n is 2, a plurality of R4's may be the same or different; L represents a divalent linking group; and k represents an integer of 0 or more, wherein when k is 2 or more, a plurality of L's may be the same or different.
    Type: Grant
    Filed: May 30, 2002
    Date of Patent: December 9, 2003
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Shigeki Uehira, Kiyoshi Takeuchi
  • Patent number: 6620580
    Abstract: Disclosed is a photographic element comprising a support bearing a blue light sensitive record containing at least three layers having different levels of light sensitivity arranged in the order slowest to fastest with the slowest layer closest to the support and the fastest layer closest to the light exposure source, wherein (a) all of the blue-sensitive layers are closer to the light exposure source than the layers sensitive to any other color; (b) the slowest blue light sensitive layer is at least 1.0 log E slower than the next fastest blue light sensitive layer when measured at a density of 0.15 above Dmin, and contains a particular type of cyan dye-forming development inhibitor releasing (DIR) coupler; and (c) all of the blue light sensitive layers other than the slowest blue light sensitive layer independently contain a certain type of yellow dye-forming DIR coupler. Embodiments of the invention provide improved color rendition without sacrificing blue density.
    Type: Grant
    Filed: November 14, 2001
    Date of Patent: September 16, 2003
    Assignee: Eastman Kodak Company
    Inventors: Norma B. Platt, Drake M. Michno
  • 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
  • Publication number: 20030143498
    Abstract: Disclosed is a photographic element comprising a support bearing a blue light sensitive record containing at least three layers having different levels of light sensitivity arranged in the order slowest to fastest with the slowest layer closest to the support and the fastest layer closest to the light exposure source, wherein (a) all of the blue-sensitive layers are closer to the light exposure source than the layers sensitive to any other color; (b) the slowest blue light sensitive layer is at least 1.0 logE slower than the next fastest blue light sensitive layer when measured at a density of 0.15 above Dmin, and contains a particular type of cyan dye-forming development inhibitor releasing (DIR) coupler; and (c) all of the blue light sensitive layers other than the slowest blue light sensitive layer independently contain a certain type of yellow dye-forming DIR coupler. Embodiments of the invention provide improved color rendition without sacrificing blue density.
    Type: Application
    Filed: November 14, 2001
    Publication date: July 31, 2003
    Applicant: Eastman Kodak Company
    Inventors: Norma B. Platt, Drake M. Michno
  • Publication number: 20030068590
    Abstract: A silver halide photographic lightsensitive material comprising a support having thereon at least one lightsensitive silver halide emulsion layer, wherein the lightsensitive material contains at least one compound represented by general formula (I) and at least one photographically useful group-releasing compound represented by general formula (II) or (III) that is capable of forming a compound having substantially no contribution to a dye after its coupling with an oxidized form of a developing agent:
    Type: Application
    Filed: January 3, 2002
    Publication date: April 10, 2003
    Applicant: FUJI PHOTO FILM CO., LTD.
    Inventors: Yoichi Hosoya, Kiyoshi Morimoto, Tadashi Inaba
  • 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: 6500590
    Abstract: The present invention is directed to a method of processing color photographic film that has been imagewise exposed in a camera, said film having at least three light-sensitive units which have their individual sensitivities in different wavelength regions, each of the units comprising at least one light-sensitive silver-halide emulsion, binder, and dye-providing coupler, which method in order comprises: (a) thermally developing the film step without any externally applied developing agent, comprising heating said film to a temperature greater than 80° C.
    Type: Grant
    Filed: May 23, 2001
    Date of Patent: December 31, 2002
    Assignee: Eastman Kodak Company
    Inventors: Mark E. Irving, David T. Southby
  • Patent number: 6482582
    Abstract: Disclosed in an image recording material comprising, on a support, a photosensitive silver halide, a reducing agent, a binder and a compound represented by the following Formula (1): wherein, in Formula (1), R1 and R2 each independently represent a substituent, R1 and R2 may be bonded to each other to form a ring, X represents a halogen atom, L represents a methylene group, m represents an integer of 0-7, Y represents a divalent bridging group, n represents 0 or 1 and Z represents a residue derived from a photographically useful compound. This image recording material exhibits high sensitivity, low fog and good storage stability, and is stable against fluctuation of development conditions.
    Type: Grant
    Filed: July 24, 2001
    Date of Patent: November 19, 2002
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Katsuyuki Watanabe, Masaru Takasaki
  • Patent number: 6440618
    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, wherein B is a six-membered heteroaromatic ring. 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: August 27, 2002
    Assignee: Eastman Kodak Company
    Inventors: Wojciech K. Slusarek, Xiqiang Yang, David H. Levy
  • 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: 6403293
    Abstract: A silver halide color photographic light sensitive material is disclosed, comprising a support having thereon a blue-sensitive silver halide emulsion layer, a green-sensitive silver halide emulsion layer and a red-sensitive silver halide emulsion layers, wherein at least one of the silver halide emulsion layers contains a coupler represented by the following formula:
    Type: Grant
    Filed: December 8, 2000
    Date of Patent: June 11, 2002
    Assignee: Konica Corporation
    Inventors: Osamu Ishige, Emiko Kataoka, Hiroyuki Hoshino
  • Patent number: 6379879
    Abstract: A color photographic recording material having at least one spectrally sensitized silver halide emulsion layer, characterized in that said silver halide emulsion layer contains an oil former having a pKa value of less than 18 and a DIR coupler and the material contains at least one color coupler, wherein the color coupler and/or the DIR coupler have specific structures, is distinguished by an increased interimage effect in comparison with the prior art without sensitivity being reduced.
    Type: Grant
    Filed: February 26, 2001
    Date of Patent: April 30, 2002
    Assignee: Agfa-Gevaert
    Inventors: Jörg Hagemann, Günter Helling, Heinz Wiesen, Ralf Wirowski, Ralf Büscher
  • Patent number: 6379880
    Abstract: A heat-developable photosensitive material having: (a) at least one layer of photosensitive image-forming layer containing an organic silver salt, a photosensitive silver halide, a reducing agent and an organic binder; and (b) a functional layer containing a binder and a solid dispersion; the binder consisting of a water-dispersed thermoplastic resin, and the solid dispersion being made of a precursor of a photographically useful compound capable of releasing the photographically useful compound when heated to 100° C. or higher and not higher than heat development temperature is disclosed.
    Type: Grant
    Filed: March 3, 2000
    Date of Patent: April 30, 2002
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Kazunobu Katoh
  • Patent number: 6372421
    Abstract: This invention relates to a silver halide photothermographic imaging element comprising at least one silver halide emulsion layer, said silver halide element further comprising an amido compound of Formula I wherein INH is a development inhibitor; LINK is a linking or timing group and m is 0, 1 or 2; and R1 and R2 independently are a hydrogen atom or an aliphatic, aromatic or heterocyclic group, or R1 and R2 together with the nitrogen to which they are attached represent the atoms necessary to form a 5 or 6 membered ring or multiple ring system, or R1 and R2 are independently a —C(═O)(LINK)m-INH group, or are substituted with a —NR3C(═O)-(LINK)m-INH , with R3 being defined the same as R1 or R2, with the proviso that only one of R1 and R2 can be a hydrogen atom. It further relates to methods of image formation utilizing said element.
    Type: Grant
    Filed: June 13, 2000
    Date of Patent: April 16, 2002
    Assignee: Eastman Kodak Company
    Inventors: David T. Southby, Xiqiang Yang, Zybslaw R. Owczarczyk
  • Publication number: 20020028412
    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: 1
    Type: Application
    Filed: June 1, 2001
    Publication date: March 7, 2002
    Inventors: Xiqiang Yang, Zbyslaw R. Owczarczyk, David T. Southby
  • Publication number: 20020018971
    Abstract: A colour photographic recording material having at least one spectrally sensitised silver halide emulsion layer, characterised in that said silver halide emulsion layer contains an oil former having a pKa value of less than 18 and a DIR coupler and the material contains at least one colour coupler, wherein the colour coupler and/or the DIR coupler have specific structures, is distinguished by an increased interimage effect in comparison with the prior art without sensitivity being reduced.
    Type: Application
    Filed: February 26, 2001
    Publication date: February 14, 2002
    Inventors: Jorg Hagemann, Gunter Helling, Heinz Wiesen, Ralf Wirowski, Ralf Buscher
  • Publication number: 20020019571
    Abstract: This invention relates to an imaging element comprising an imaging layer having associated therewith a compound of Structure I: 1
    Type: Application
    Filed: July 13, 2001
    Publication date: February 14, 2002
    Inventors: Wojciech K. Slusarek, Xiqiang Yang, David H. Levy
  • Publication number: 20020018972
    Abstract: Blocked photographically useful groups decompose thermally via a Lossen rearrangement reaction, including, for example, compounds represented by the following structure: 1
    Type: Application
    Filed: May 25, 2001
    Publication date: February 14, 2002
    Inventors: Wojciech K. Slusarek, Xiqiang Yang, David H. Levy
  • Patent number: 6346371
    Abstract: The invention provides a photographic element comprising at least one emulsion layer comprising at least 50 mol % silver chloride, which layer comprises at least one DIR coupler in association with at least one image dye-forming coupler, characterised in that the relative reactivity ratio krel of at least one DIR coupler and an associated image coupler is less than or equal to 1.0, wherein krel=k1/k2; k1=the second order rate constant for the reaction of DIR coupler with oxidised developer and k2=the second order rate constant for the reaction of image coupler with oxidised developer. The DIR couplers when associated with image couplers such that the above condition is satisfied efficiently reduce development of silver halide emulsions containing at least 50 mol % silver chloride, there being a reduction in contrast providing a linear sensitometric curve over a good latitude with negligible speed penalty.
    Type: Grant
    Filed: June 7, 2001
    Date of Patent: February 12, 2002
    Assignee: Eastman Kodak Company
    Inventors: Andrew S. Craig, Richard P. Szajewski
  • 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: 6309811
    Abstract: Disclosed is a color photographic element comprising: a) a first light sensitive silver halide emulsion layer containing a compound with an aromatic bicyclic nitrogen nucleus of which at least one ring is six-membered and with two nitrogen ring atoms in each ring and with at least one N—H bond provided that the ClogP for the compound is at least 2.0 and less than 7.2; and (b) a second light sensitive silver halide emulsion layer, having a spectral sensitivity different from that of the first light sensitive silver halide emulsion layer, containing a compound of Formula III: COUP-(TIME)j-INH  III  wherein: COUP is a coupler parent group capable of forming a dye upon reaction with an oxidized developer; TIME is a timing group and j is 0,1 or 2; and INH is a mild silver development inhibitor fragment. The invention provides improved color reproduction.
    Type: Grant
    Filed: July 21, 1999
    Date of Patent: October 30, 2001
    Assignee: Eastman Kodak Company
    Inventors: Philip A. Allway, Louis E. Friedrich, Stephen P. Singer
  • 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: 6280919
    Abstract: The invention provides 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 ring and represented by formula I: wherein the substituents are as described in the specification.
    Type: Grant
    Filed: December 30, 1998
    Date of Patent: August 28, 2001
    Assignee: Eastman Kodak Company
    Inventors: Wojciech K. Slusarek, Jerrold N. Poslusny, Zheng Z. Wu
  • Publication number: 20010010895
    Abstract: Disclosed is a color photographic element comprising:
    Type: Application
    Filed: July 21, 1999
    Publication date: August 2, 2001
    Inventors: PHILIP A. ALLWAY, LOUIS E. FRIEDRICH, STEPHEN P. SINGER
  • Patent number: 6261750
    Abstract: A silver halide color light-sensitive material contains at least one light-sensitive silver halide emulsion layer and at least one non-light-sensitive layer on a support, wherein at least one of the non-light-sensitive layers contains a silver halide emulsion having a previously fogged surface, and the non-light-sensitive layer containing the previously fogged emulsion and/or its adjacent layer contains a compound capable of releasing a photographically useful group or its precursor by a coupling reaction with the oxidized form of a developing agent, wherein the previously fogged emulsion is developed during color development to evenly form the oxidized form of a color developing agent, and the photographically useful group or its precursor is released non-imagewise by the coupling reaction.
    Type: Grant
    Filed: March 31, 2000
    Date of Patent: July 17, 2001
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Yoshio Ishii, Takayuki Ito, Fumitaka Ueda, Hiroyuki Yoneyama
  • Patent number: 6242168
    Abstract: The present invention relates to a light-sensitive silver halide color multilayer photographic material which comprises a support base having coated thereon at least three red-sensitive emulsion layers having different sensitivity, at least three green-sensitive emulsion layers having different sensitivity, and at least two yellow-sensitive emulsion layers having different sensitivity, wherein (a) a core-shell silver halide emulsion having an average silver iodide content lower than 10% mol is present in at least one of the lowest sensitive red-, green- and yellow layers, (b) a yellow dye forming malonodiamide DIR coupler having in the coupling position thereof a 4,7-dihalogen-2-benzotriazolyl group is present in both the medium sensitive red- and green-sensitive layers, and (c) a yellow dye forming DIR coupler having a 1,2,4-triazolyl group attached to the coupling position, such 1,2,4-triazolyl group comprising a hydrolizable alkoxy- or aryloxy-carbonyl group attached to a benzytlthio substituent on the
    Type: Grant
    Filed: May 23, 2000
    Date of Patent: June 5, 2001
    Assignee: Ferrania SpA
    Inventors: Mauro Avidano, Raffaella Biavasco, Diego Brignone, Giuseppe Rocca, Luisa Tavella
  • Patent number: 6238855
    Abstract: A photographic element comprising a support bearing one or more silver halide emulsions at least one of which comprises at least 50% silver chloride in association with one or more image dye-forming couplers and one or more DI(A)R couplers of formulae I or II: wherein: TIME is a timing group and R1, R2, Z, n, and j are as defined in the specification, wherein the DI(A)R coupler(s) in association with an emulsion comprising at least 50% silver chloride comprise at least about 25% to about 90% of the total amount of coupler in association with that emulsion and the total amount of coupler is the sum of the number of moles of image coupler(s) and the number of moles of the DI(A)R couplers in association with that emulsion.
    Type: Grant
    Filed: December 20, 1999
    Date of Patent: May 29, 2001
    Assignee: Eastman Kodak Company
    Inventors: Philip A. Allway, Christina M. Watts, Paul L. Stanley
  • Patent number: 6228572
    Abstract: The invention provides a color photographic element comprising: a) a first light sensitive silver halide emulsion layer containing a compound of Formula 1:  wherein: M is hydrogen, an alkali metal cation or an ammonium cation, X is oxygen, sulfur or selenium, and Q represents a ballasting moiety; provided further that the ClogP for the compound of Formula I is at least 1.0 and less than 7.6; and b) a second light sensitive silver halide emulsion layer, having a spectral sensitivity different from that of the first light sensitive silver halide emulsion layer, containing a compound of Formula II: COUP—(TIME)j—INH  II  wherein: 1) COUP is a coupler parent group capable of forming a dye upon reaction with an oxidized developer; 2) TIME is a timing group and j is 0 or 1; and 3) INH is a mild silver development inhibitor fragment. The invention provides improved color reproduction.
    Type: Grant
    Filed: July 21, 1999
    Date of Patent: May 8, 2001
    Assignee: Eastman Kodak Company
    Inventors: J. R. Vargas, Louis E. Friedrich, Stephen P. Singer
  • 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: 6197488
    Abstract: Disclosed is a color photographic element comprising at least one light sensitive silver halide emulsion layer having associated therewith a coupler according to Formula I: COUP—(TIME)n—HSM  (I) wherein: COUP is an organic fragment which reacts with oxidized developer to release—(TIME)n—HSM, TIME is an optional timing group or linking group which connects HSM to COUP at the site of reaction with oxidized developer, n=0,1 or 2, and HSM is a compound having a minimum of three heteroatoms and having a ClogP sufficient to increase the speed of said element compared to the same element without the coupler. The invention provides improved light sensitivity without significant adverse effect on granularity or ease of manufacture.
    Type: Grant
    Filed: July 21, 1999
    Date of Patent: March 6, 2001
    Assignee: Eastman Kodak Company
    Inventors: Philip A. Allway, Bernard A. Clark, Louis E. Friedrich, Stephen P. Singer
  • Patent number: 6190849
    Abstract: The invention provides a color photographic element comprising: a) a first light sensitive silver halide emulsion layer containing a tetrazole compound of Formula I:  wherein when R1 is hydrogen, then R2 is an alkyl, aryl, alkoxy , aryloxy, alkylthio or arylthio, sulfoxyl, sulfonyl, sulfamoyl, —O—CO—, —O—SO2—, a heterocyclic group, a carbonyl group or an amino group or when R2 is a thiol (—SH) group, then R1 is an alkyl, aryl or heterocyclic group provided further that the ClogP for the compound of Formula I is at least 2.0 and less than 7.
    Type: Grant
    Filed: July 21, 1999
    Date of Patent: February 20, 2001
    Assignee: Eastman Kodak Company
    Inventors: Paul A. Burns, Louis E. Friedrich, Stephen P. Singer
  • Patent number: 6190853
    Abstract: This application discloses a photographic element comprising an image dye-forming coupler, and in particular a yellow coupler with an indazole coupling-off group which produces images with improved sharpness and comprises a light sensitive silver halide emulsion layer containing an image-dye-forming coupler of formula (I) wherein: R is an alkyl, aryl, alkoxy or heterocyclic group; R1-R5 are hydrogen or an independently selected substituent, provided that R1 and R2, R2 and R3, R3 and R4 and R4 and R5 may represent fused cyclic groups; Ind is an indazole of formula (II): wherein Ind is linked directly to the coupler via a ring nitrogen atom (Na or Nb); and V, W, X, Y and Z are the same or different and are hydrogen or a substituent; provided that the sum of the Hammett sigma para values of V, W, X, Y and Z is equal to or greater than 0.4.
    Type: Grant
    Filed: September 1, 1999
    Date of Patent: February 20, 2001
    Assignee: Eastman Kodak Company
    Inventor: Michael W. Crawley
  • Patent number: 6174656
    Abstract: There is disclosed a silver halide photographic light-sensitive material having at least one light-sensitive silver halide emulsion layer on a base, which comprises a compound of the formula (1) having a photographically useful group protected: formula (1) V—Ar1—X1—(L1)m1—PUG wherein V is a group that can be converted to a hydroxyl group in the presence of a peroxide in an alkaline solution by a rearrangement reaction, Ar1 is an aryl or heterocyclic group, X1 is a methylene group substituted at a position that allows a photographically useful group to be released upon subjection of the group V to an oxidation action, L1 is a linking group, PUG is a photographically useful group, and m1 is an integer of 0 to 3. There is also disclosed is an image-forming method, which comprises processing the light-sensitive material in the presence of a peroxide. There is also disclosed a novel aromatic-aldehyde compound included in the formula (1).
    Type: Grant
    Filed: September 29, 1998
    Date of Patent: January 16, 2001
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Takashi Nakamura, Toshiyuki Makuta, Koki Nakamura
  • 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