Monoazo Patents (Class 430/562)
  • Publication number: 20020146651
    Abstract: A color-developing agent of the formula (1-1): 1
    Type: Application
    Filed: July 25, 2001
    Publication date: October 10, 2002
    Inventors: Osamu Uchida, Yasuhiro Ishiwata, Takayuki Ito, Nobutaka Fukagawa
  • 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: 6180324
    Abstract: A heat developable color photographic material for use in an image-forming process comprising: (a) superposing a heat developable color photographic material onto an image-receiving material that is formed on a separate support from a support of the heat developable color photographic material; and (b) heat-developing the heat developable color photographic material superposed on the image-receiving material to form or release a diffusible dye, so that the diffusible dye is transferred to the image-receiving material to thereby form an image: wherein the heat developable color photographic material contains at least a light-sensitive silver halide and yellow, magenta and cyan dye-donating compounds, which form or release diffusible yellow, magenta and cyan dyes, respectively, by heat development corresponding to silver development, wherein the yellow, magenta and cyan dyes, respectively, has a maximum absorption intensity of spectral absorption at a wavelength of from 440 nm to 460 nm, from 525 nm to 545 nm,
    Type: Grant
    Filed: December 21, 1998
    Date of Patent: January 30, 2001
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Kazuki Uehara
  • Patent number: 6132943
    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; q is an integer of from 0 to 3, and each R' independently represents a substituent group or two R' groups together complete a ring of from 5-7 atoms, which ring may include 1 or more heteroatoms selected from O, N and S; m is 1 or 2, and DG represents a substituent of the formula ##STR2## where 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.
    Type: Grant
    Filed: October 14, 1999
    Date of Patent: October 17, 2000
    Assignee: Eastman Kodak Company
    Inventors: Janet N. Younathan, Michael W. Crawley, Krishnan Chari
  • Patent number: 6124084
    Abstract: A silver halide photographic light-sensitive material comprising a support having provided thereon a layer containing at least one cyan dye image forming compound represented by the following formula (1):(Dye-X).sub.1 --Y (1)wherein Dye, X, Y and q are as defined in the specification. The silver halide photographic light-sensitive material containing the cyan dye image forming compound according to the present invention provides a cyan color image excellent in fastness to light, humidity and heat.
    Type: Grant
    Filed: July 24, 1998
    Date of Patent: September 26, 2000
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Keiichi Tateishi, Takayoshi Kamio, Tetsu Kamosaki, Yasuhiro Ishiwata, Hideaki Naruse
  • 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: 5817452
    Abstract: A heat developable color light-sensitive material provided on a support, which is for use in an image forming process comprising using a dye fixing element provided on a support separate from the support for the light-sensitive material, superposing one on another, heat developing to form a diffusible dye in the light sensitive material, and transferring the diffusible dye to the dye fixing element to form an image, is disclosed.
    Type: Grant
    Filed: September 19, 1997
    Date of Patent: October 6, 1998
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Tetsu Kamosaki
  • Patent number: 5731140
    Abstract: A pyrazolylazophenol dye exhibiting excellent spectral characteristics and having high fastness to light, heat, air or chemicals, and a color light-sensitive material containing an image forming compound comprising the dye, which releases a magenta dye exhibiting excellent spectral characteristics and having high fastness to light, heat, air or chemicals.
    Type: Grant
    Filed: October 31, 1996
    Date of Patent: March 24, 1998
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Takayoshi Kamio, Nobuo Seto, Hironori Hiyoshi
  • Patent number: 5716754
    Abstract: There are described image-recording materials which include an image dye-providing compound comprising a novel naphthol azo cyan dye having a 3-aminobenzoisothiazole moiety. The image dye-providing compound includes a diffusion control moiety such as a hydroquinonyl developer group, a precursor thereof or a thiazolidine moiety and, may be diffusible or nondiffusible as a function of the diffusion control moiety.Image-recording materials according to the invention including those which contain high potential developers such as aminoreductone allow sufficient cyan chromophore to diffuse to the image-receiving layer to provide an acceptable photograph and result in no appreciable reduction of the 3-aminobenzoisothiazole moiety of the novel naphthol azo cyan dye.
    Type: Grant
    Filed: September 18, 1996
    Date of Patent: February 10, 1998
    Assignee: Polaroid Corporation
    Inventors: Michael J. Arnost, Peter Viski, David P. Waller, David C. Whritenour
  • Patent number: 5707792
    Abstract: A silver halide photographic light sensitive material is disclosed, comprising a support having thereon photographic component layers including a silver halide emulsion layer and a light insensitive hydrophilic colloidal layer, wherein at least one of the component layers contains a leuco dye represented by the following formula.
    Type: Grant
    Filed: January 30, 1997
    Date of Patent: January 13, 1998
    Assignee: Konica Corporation
    Inventors: Taketoshi Yamada, Norio Miura, Emiko Kataoka, Katsunori Katoh
  • Patent number: 5665529
    Abstract: A color diffusion transfer photographic material is described, which comprises at least one compound represented by the following formula (I): ##STR1## wherein R.sup.1 and R.sup.2 each independently represents a hydrogen atom, a substituted or unsubstituted alkyl group, or a substituted or unsubstituted aryl group, and R.sup.1 and R.sup.2 may be linked to form a ring directly or via an oxygen atom or a nitrogen atom; R.sup.3 represents an --NHSO.sub.2 R.sub.10 group, an --SO.sub.2 NHCOR.sub.10 group, an --SO.sub.2 NHSO.sub.2 R.sub.10 group, an --NHCOR.sub.10 group or an --OH group; R.sub.10 represents an alkyl group; R.sup.4 and R.sup.5 each represents a substituent and when there are a plurality of R.sup.4 and R.sup.5, they may be the same or different; CAR represents a group which releases a dye different from the compound represented by formula (I) in diffusibility by oxidation; x and y each represents 0 or an integer of 1, 2, 3 or 4; and z represents 0 or 1.
    Type: Grant
    Filed: April 3, 1996
    Date of Patent: September 9, 1997
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Atsuhiro Ohkawa, Hisashi Mikoshiba, Masaaki Tsukase, Yasuhiro Ishiwata, Hideaki Naruse
  • Patent number: 5658718
    Abstract: Multilayer silver halide color photographic element comprising a support having thereon at least a blue sensitive silver halide emulsion layer containing a yellow dye-forming coupler, at least a green-sensitive silver halide emulsion layer containing a magenta dye-forming coupler, and at least a red-sensitive silver halide emulsion layer containing a cyan dye-forming coupler, said red-sensitive layer containing a non-diffusible, cyan dye-forming magenta masking coupler.
    Type: Grant
    Filed: December 22, 1995
    Date of Patent: August 19, 1997
    Assignee: Imation Corp
    Inventors: Anna Maria Canuti, Roberto Sardelli, Massimo Bertoldi
  • Patent number: 5658705
    Abstract: There are described color-providing compounds having at least two cyclic 1,3-sulfur-nitrogen moieties and one complete dye or dye intermediate. The color-providing compound is stable in the photographic processing composition but capable of undergoing cleavage in the presence of an imagewise distribution of silver ions and/or soluble silver complex made available as a function of development to liberate a complete dye or dye intermediate in an imagewise distribution corresponding to that of the silver ion and/or the soluble silver complex. The color-providing compounds are useful as image-forming materials in color photographic, photothermographic, thermographic, and other processes.
    Type: Grant
    Filed: November 20, 1996
    Date of Patent: August 19, 1997
    Assignee: Polaroid Corporation
    Inventors: Peter Viski, David P. Waller
  • Patent number: 5658717
    Abstract: Multilayer silver halide color photographic element comprising a support having thereon at least a blue sensitive silver halide emulsion layer containing a yellow dye-forming coupler, at least a green-sensitive silver halide emulsion layer containing a magenta dye-forming coupler, and at least a red-sensitive silver halide emulsion layer containing a cyan dye-forming coupler, said red-sensitive layer or a gelatin interlayer adjacent said red-sensitive layer containing a non-diffusible, non-coupling magenta colored azo dye.
    Type: Grant
    Filed: December 22, 1995
    Date of Patent: August 19, 1997
    Assignee: Imation Corp.
    Inventors: Anna Maria Canuti, Roberto Sardelli, Massimo Bertoldi
  • Patent number: 5585231
    Abstract: A heat developable color light-sensitive material containing at least light-sensitive silver halide, a binder, and a dye-providing compound on a support, wherein at least one of the compounds represented by formula (1) is contained as the above dye-providing compound, and the amount of the above binder is 5 g/m.sup.2 or less: ##STR1## wherein variables in the above formula are defined in the specification. The heat developable color light-sensitive material which provides an excellent discrimination of an image and is less susceptible to an influence by a fluctuation in a development processing condition.
    Type: Grant
    Filed: May 11, 1995
    Date of Patent: December 17, 1996
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Makoto Yamada, Naoto Matsuda, Yasuhiro Ishiwata, Osamu Uchida, Michio Ono
  • 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: 5492799
    Abstract: The invention provides a photographic element comprising a support bearing a light-sensitive photographic silver halide layer having associated therewith a masking coupler comprising:(1) a parent group containing a -1-phenyl-3-anilinopyrazolin-5-one having electron-withdrawing substituents on the phenyl and anilino rings of a type and number sufficient to provide a combined Hammett sigma(para) value for such substituents of at least 1.
    Type: Grant
    Filed: June 22, 1994
    Date of Patent: February 20, 1996
    Assignee: Eastman Kodak Company
    Inventors: Daniel L. Kapp, Robert J. Ross, Stephen P. Singer, Bernard A. Clark
  • 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: 5376513
    Abstract: A silver halide color photographic light-sensitive material comprising a support having thereon at least one light-sensitive silver halide emulsion layer, wherein the light-sensitive material contains a yellow colored cyan coupler and an acylacetamide yellow dye forming coupler having an acyl moiety represented by the general formula (A): ##STR1## wherein R.sub.1 represents a univalent group, Q represents a group of non-metal atoms required to form, together with C, a three to five membered hydrocarbon ring or a three to five membered heterocyclic ring which has within the ring at least one hetero atom selected from among N, O, S and P, with the proviso that R.sub.1 is not a hydrogen atom and it does not join with Q to form a ring.
    Type: Grant
    Filed: November 9, 1993
    Date of Patent: December 27, 1994
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Keiji Mihayashi
  • 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: 5242783
    Abstract: A novel blocked photographically useful compound element and process are based on a new blocking group that comprises a beta-ketocarbonyl group that is part of a 5- to 7-member heterocyclic ring containing a hetero-atom not adjacent to the beta-ketocarbonyl group. Such a blocked photographically useful compound provides a photographic material and process enabling more rapid release of the photographically useful group upon processing.
    Type: Grant
    Filed: July 23, 1992
    Date of Patent: September 7, 1993
    Assignee: Eastman Kodak Company
    Inventors: John M. Buchanan, Gary S. Proehl
  • Patent number: 5233028
    Abstract: (1) Dicyanoimidazole compound derivative represented by the formula [I] ##STR1## [R.sup.1, R.sup.2 : alkyl group, alkoxyalkyl group, hydroxyalkyl group, .beta.-cyanoethyl group, .beta.-chloroethyl group, aralkyl group, aryl group; X: hydrogen atom, lower alkoxy group, methyl group, halogen atom; Y: hydrogen atom, methyl group, methoxy group, formylamino group, alkylcarbonylamino group, alkylsulfonylamino group, alkoxycarbonylamino group; --Q--: --(CR.sub.2).sub.n --[n: integer of 1 to 12, R: hydrogen atom, alkyl group], ##STR2## --CH.dbd.CH--, --CH.sub.2 CH.dbd.CHCH.sub.2 --, --CH.sub.2 --CH.dbd.CH--]. (2) Magenta toner for color electrophotography containing at least one kind of the dicyanoimidazole compound derivative represented by the formula [I] as a coloring agent.(3) Colored resin and resin color filter containing at least one kind of the dicyanoimidazole compound derivative represented by the formula [I] in solution.
    Type: Grant
    Filed: February 1, 1991
    Date of Patent: August 3, 1993
    Assignee: Orient Chemical Industries, Ltd.
    Inventors: Masahiro Ohtsuka, Tohru Tamura
  • Patent number: 5223387
    Abstract: A color light-sensitive material comprising a support provided thereon at least one light-sensitive silver salt layer combined with an image forming compound represented by formula (I) ##STR1## wherein Dye represents a cyan dye group or a precursor thereof represented by formula (II) defined in the specification;X represents a chemical bond or a linking group;Y represents a group which releases Dye corresponding to or countercorresponding to light-sensitive silver salt having an imagewise latent image and makes a difference in diffusibility between the dye thus released and the compound represented by formula (I), provided that Dye and X are linked to each other by A or E in formula (II); andq represents an integer of 1 or 2, provided that when q is 2, the two groups (Dye--X) may be the same or different.
    Type: Grant
    Filed: September 8, 1992
    Date of Patent: June 29, 1993
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Masaaki Tsukase, Kozo Sato, Hiroyuki Hirai
  • Patent number: 5116717
    Abstract: A silver halide photographic material composed of a support having thereon at least one silver halide photosensitive emulsion layer, at least one layer of the material containing a blocked photographic reagent precursor represented by formula (I): ##STR1## wherein X.sub.1 represents a divalent linking group containing a hetero atom bonded to the carbon atom, provided that X.sub.1 is linked to the carbon atom by a group other than ##STR2## PUG represents a photographically useful group containing a hetero atom bonded to X.sub.1 ; W represents .dbd.N-- or ##STR3## Y.sub.1 represents hydrogen or a group capable of being substituted; Z represents an atomic group necessary for forming a heterocyclic ring, provided that when W represents a ##STR4## the group adjacent to W in the heterocyclic ring is a group other than ##STR5## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4 and R.sub.
    Type: Grant
    Filed: February 25, 1991
    Date of Patent: May 26, 1992
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Tetsunori Matsushita, Morio Yagihara
  • Patent number: 5112730
    Abstract: A silver halide color photographic material comprises a support having thereon at least one silver halide emulsion layer and at least one cyan coupler which can release a water-soluble compound residual group which contains a 2-acyaminophenylazo group or 2-sulfonamidophenylazo group via a coupling reaction with an oxidation product of a primary aromatic amine developing agent.
    Type: Grant
    Filed: December 5, 1990
    Date of Patent: May 12, 1992
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Atsuhiro Ohkawa, Takayoshi Kamio, Masuzi Motoki, Keiji Mihayashi
  • Patent number: 5100759
    Abstract: A silver halide color light-sensitive material comprising a support having thereon at least a silver halide and an infrared-absorbing image-forming compound represented by formula (I):(Dye --X).sub.q --Y (I)wherein Dye represents an infrared-absorbing dye group or an infrared-absorbing dye precursor group derived from a compound represented by formula (II)A, (II)B or (II)C; X represents a chemical bond or a connecting group; Y represents a group capable of making a difference in the diffusibility of the dye component of said compound represented by formula (I) between before and after the reaction with the silver halide having a latent image in correspondence or counter correspondence to the silver halide; having a latent image and q represents an integer 1 or 2, and when q is 2, the two (Dye-X) groups may be the same or different: ##STR1## wherein R.sup.1A and R.sup.
    Type: Grant
    Filed: August 10, 1989
    Date of Patent: March 31, 1992
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Kozo Sato, Hiroshi Hara, Koki Nakamura, Masaaki Tsukase, Katsuyuki Watanabe
  • Patent number: 5066577
    Abstract: A silver halide color photographic material comprising a support having thereon at least one silver halide emulsion layer, wherein the silver halide color photographic material contains an image forming compound represented by the following general formula (I):(Dye--X).sub.q --Y (I)wherein Dye represents a cyan dye group represented by the general formula (II) described below or a precursor thereof; X represents a chemical bond or a linking group; Y represents a group having a property of releasing Dye in correspondence or counter-correspondence to development of a light-sensitive silver salt having a latent image distributed imagewise and making a difference in diffusibility between the dye thus-released and the compound represented by (Dye--X).sub.q --Y; Dye and X are connected with each other by C or E in the general formula (II); and q represents an integer of 1 or 2, and when q is 2, the two groups (Dye--X) may be the same or different: ##STR1## wherein A represents a halogen atom, --OR.sup.1 or --SR.
    Type: Grant
    Filed: April 24, 1990
    Date of Patent: November 19, 1991
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Koki Nakamura, Takayuki Ito, Masaaki Tsukase, Toshiki Taguchi
  • Patent number: 5037731
    Abstract: A ballasted non-diffusing compound that is capable of releasing a diffusible particularly light-fast azo dye from a carrier moiety, characterized in that said compound corresponds to the following general formula:CAR--L--G--Dwherein:CAR represents a ballasted carrier moiety making said compound non-diffusing in a hydrophilic colloid medium under wet alkaline conditions,L represents a chemical group cleavable or releasable from the carrier moiety as a function of a redox-reaction or argentolytic reaction taking place in the development of a silver halide emulsion layer under alkaline conditions;G represents a bivalent organic group containing at least one aromatic nucleus being substituted with a R.sup.5 R.sup.6 NSO.sub.2 NH-group, wherein R.sup.5 and R.sup.6 (same or different) represent hydrogen, an alkyl group including a substituted alkyl group or an aryl group including a substituted aryl group, andD is an azo dye part chemically linked to an aromatic nucleus of G.
    Type: Grant
    Filed: October 7, 1986
    Date of Patent: August 6, 1991
    Assignee: Agfa-Gevaert, N.V.
    Inventors: Hans Vetter, Christian C. Van de Sande, Luc J. Vanmaele, Armand M. Van den Bergh, Wilhelmus Janssens
  • Patent number: 5021334
    Abstract: A light-sensitive element for the diffusion transfer process which comprises a support having thereon a light-sensitive silver halide emulsion layer having associated therewith a yellow dye providing compound represented by the following general formula (I): ##STR1## wherein CAR represents a carrier moiety which is capable of releasing a diffusible dye from the compound in correspondence or counter-correspondence to development under alkaline conditions; Link represents a group connecting CAR with a diffusible dye; m represents 0 or 1; the dotted lines mean that at least one of the dotted lines is a bond; R.sup.1 represents a hydrogen atom, an alkyl group, an aryl group, an alkoxy group, an aryloxy group, an alkoxycarbonyl group, an aryloxycarbonyl group or a carbamoyl group; R.sup.2 represents an alkyl group or an aryl group; and R.sup.3 represents an aryl group excepting an aryl group having the Hammett's .sigma..sub.p value less than 0.01.
    Type: Grant
    Filed: January 8, 1990
    Date of Patent: June 4, 1991
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Keizo Koya
  • Patent number: 4946767
    Abstract: A silver halide color photographic material composed of a support having thereon at least one light-sensitive silver halide emulsion layer, the material having a specific photographic sensitivity of at least 320 and a surface spectral reflectance of from 20% to less than 35% at a wavelength of 600 nm on the emulsion side film surface. The high sensitivity color photographic light-sensitive material provides superior exposure when used in an automatic exposure camera.
    Type: Grant
    Filed: September 23, 1988
    Date of Patent: August 7, 1990
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Hiroyuki Yamagami
  • Patent number: 4916047
    Abstract: A silver halide light-sensitive material comprising a support having thereon at least one silver halide emulsion layer, and containing a compound containing a repeating unit, said compound containing a repeating unit being connected at the repeating unit to a compound represented by formula (I) at the position of the PWR or Time moiety:PWR--Time.sub.t PUG (I)wherein PWR represents a moiety capable of releasing (Time.sub.t PUG upon reduction, and PUG represents a group which can fulfil a photographically useful function after the release; Time represents a moiety capable of releasing PUG through a reaction subsequent to the release from PWR in the form of --Time.sub.t PUG; and t represents 0 or 1.
    Type: Grant
    Filed: April 29, 1988
    Date of Patent: April 10, 1990
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Keizo Koya, Junichi Yamanouchi, Masaharu Toriuchi, Yoshisada Nakamura
  • Patent number: 4892811
    Abstract: A silver halide photographic material which comprises a support having coated thereon a light-sensitive silver halide emulsion layer, wherein the photographic material contains a blocked photographic agent represented by the following general formula (I): ##STR1## wherein A represents a photographic agent moiety which is bonded to a blocking moiety through a hetero atom, or a precursor thereof; R.sup.1 represents a hydrogen atom or a substituent group; and Z represents atoms necessary to form a carboxylic ring or a heterocyclic ring. The blocked photographic agent is completely stable upon storage of the photographic material, and releases a photographic agent at a desired time upon processing of the photographic material. The blocked photographic agent also exhibits its function to a substantial degree over a wide range.
    Type: Grant
    Filed: November 16, 1987
    Date of Patent: January 9, 1990
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Morio Yagihara, Mitsunori Ono, Akihiko Ikegawa
  • Patent number: 4871654
    Abstract: Photographic silver halide emulsion element for dye image production comprising a support carrying at least one alkali-permeable silver halide hydrophilic colloid emulsion layer incorporating in operative association therewith a dye-releasing compound capable of releasing a diffusible dye moiety from a carrier moiety by a redox reaction, said compound corresponding to the general formula: ##STR1## wherein CAR is an organic carrier moiety capable of undergoing a redox reaction, L is a group cleavable or releasable from the carrier moiety by a redox reaction taking place in alkaline condiitons as a function of the development of a silver halide emulsion layer incorporating such compound, G is a bridging group, each of L.sup.1 and L.sup.2 is a linking member, PUG.sup.1 is a dye (precursor) group, PUG.sup.2 is a dye (precursor) group, an UV-absorber group, or a singlet oxygen scavenger group.
    Type: Grant
    Filed: April 11, 1988
    Date of Patent: October 3, 1989
    Assignee: Agfa-Gevaert, N.V.
    Inventors: Luc J. Vanmaele, Christian C. Van de Sande
  • Patent number: 4871655
    Abstract: A light-sensitive silver halide color photographic material, comprising at least one photographic constituent layer containing a multi-functional dye which becomes substantially colorless in the presence of the oxidized product of a color developing agent through the reaction with the oxidized product, and becomes substantially colorless in the absence of the oxidized product of the color developing agent during the color-photographic processing step.According to the present invention, a color light-sensitive material containing a multi-functional compound having excellent sharpness, good color reproducibility and further excellent graininess can be obtained.
    Type: Grant
    Filed: December 30, 1987
    Date of Patent: October 3, 1989
    Assignee: Konica Corporation
    Inventors: Mitsuto Fujiwhara, Takashi Uchida, Toshihiko Kimura
  • Patent number: 4857447
    Abstract: A silver halide color photographic light-sensitive material is disclosed, comprising (1) a coupler having a dye moiety, the maximum absorption wavelength of which is shifted to the shorter wavelength by a bond cleaving, directly or through a timing group, due to a coupling reaction with an oxidized product of an aromatic primary amine-based developing agent, and, as a result of the reaction, forming a compound having a dye portion which has the original maximum absorption wavelength before shifting; and (2) a compound releasing a development inhibitor directly or through a timing group upon reacting with the oxidized aromatic primary amine-based developing agent.
    Type: Grant
    Filed: May 28, 1986
    Date of Patent: August 15, 1989
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Koji Tamoto, Mitsunori Ono
  • Patent number: 4855223
    Abstract: A photographic silver halide emulsion material for carrying out a dye diffusion transfer process which material contains a compound that is capable of releasing a diffusible light-fast azo dye from a non-diffusible carrier moiety, wherein said dye contains the following group: --Ar.sup.1 --SO.sub.2 NR--Ar.sup.2 --NR--SO.sub.2 -- as defined herein.
    Type: Grant
    Filed: March 9, 1988
    Date of Patent: August 8, 1989
    Assignee: Agfa-Gevaert, N.V.
    Inventors: Luc J. Vanmaele, Janssens Wilhelmus, Christian C. Van de Sande
  • Patent number: 4837142
    Abstract: A color light-sensitive material is disclosed. The material is comprised of a support having provided thereon at least one image-forming compound represented by formula (I) ##STR1## wherein X, Y, q, and Dye are as defined herein. The light-sensitive material shows excellent yellow dye-transferring properties and provides a yellow dye having excellent light fastness.
    Type: Grant
    Filed: May 27, 1986
    Date of Patent: June 6, 1989
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Kozo Sato, Masashi Takeuchi, Takeshi Shibata
  • Patent number: 4830957
    Abstract: A color light-sensitive material is disclosed. The material is comprised of a support having provided thereon at least one image-forming compound represented by formula (I)(Dye--X).sub.q Y (I)wherein X, Y, q, and Dye are as defined herein. The light-sensitive material shows excellent yellow dye-transferring properties and provides a yellow dye having excellent light fastness.
    Type: Grant
    Filed: October 7, 1987
    Date of Patent: May 16, 1989
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Kozo Sato, Masashi Takeuchi, Takeshi Shibata
  • Patent number: 4818675
    Abstract: This invention provides a silver halide photographic light sensitive material having an improved blackness of image silver, as well as high sensitivity and covering power. The present silver halide photographic light sensitive material includes at least one layer of a silver halide photographic emulsion on at least one side of a support, characterized in that said layer of silver halide photographic emulsion contains fine silver halide grains, or tabular silver halide grains having a grain thickness of 0.4.mu. or less, and a dye having a maximum absorption wave length of 520 to 580 nm is contained in said layer of silver halide photographic emulsion and/or another layer such that the transmission density of green light is 0.03 or less after the developing treatment of the photographic light sensitive material.
    Type: Grant
    Filed: June 11, 1986
    Date of Patent: April 4, 1989
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Nobuaki Miyasaka, Hideo Ikeda, Minoru Sakai, Shigeru Ohno, Yasuo Mukunoki
  • Patent number: 4803151
    Abstract: A photographic material for the silver dye bleach process comprises, in at least one layer, a colloidal dispersion of azo in gelatine, the ratio of azo dye to gelatine being 1:1 to 1:10.
    Type: Grant
    Filed: February 11, 1987
    Date of Patent: February 7, 1989
    Assignee: Ciba-Geigy AG
    Inventors: Rolf Steiger, Matthias Schellenberg
  • Patent number: 4795697
    Abstract: Alkyl ketazine dyes are stabilized by the presence of poly(vinyl chloride) and/or poly(vinylidene chloride) binders in photothermographic emulsions.
    Type: Grant
    Filed: December 29, 1986
    Date of Patent: January 3, 1989
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Kim M. Vogel, David C. Weigel, Roger A. Mader
  • Patent number: 4788134
    Abstract: The present invention provides a heat-developable photographic light-sensitive material comprising, on a support, at least containing a light-sensitive silver halide, a binder, a reducing agent, and an organic silver salt, wherein said organic silver salt is a silver salt of a pyrazolazole-type compound represented by formula (I) ##STR1## wherein R.sup.1 and R.sup.2 each represents a hydrogen atom or a substituent; Za, Zb, and Zc each represents a methine group, a substituted methine group, .dbd.N-- or --NH--; and one of the Za-Zb bond and Zb-Zc bond is a double bond and the other is a single bond.The present heat-developable photographic light-sensitive materials are capable of forming images of high density, with low fog, in a short period of time.
    Type: Grant
    Filed: October 23, 1986
    Date of Patent: November 29, 1988
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Hiroyuki Ozaki, Ken Kawada
  • Patent number: 4783396
    Abstract: The present invention provides silver halide photographic materials containing a havel compound, which when reduced, releases a photographically useful group as triggered off by the cleavage of the nitrogen-oxygen single bond in the compound and which is represented by the following general formula (I): ##STR1## wherein EAG represents a group which accepts an electron from a reducing substance; N and O each represents nitrogen atom and an oxygen atom, respectively; R.sup.1 and R.sup.2 each represents a substituent other than a hydrogen atom, and when R.sup.1 or R.sup.2 is bonded to --(Time).sub.t PUG, R.sup.1 or R.sup.2 is a mere bond or a substituent other than a hydrogen atom, and R.sup.1 and R.sup.
    Type: Grant
    Filed: October 30, 1986
    Date of Patent: November 8, 1988
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Koki Nakamura, Sahigeru Nakamura
  • Patent number: 4777124
    Abstract: A ballasted non-diffusing compound that is capable of releasing a diffusible particularly light-fast azo dye from a non-diffusible carrier moiety, wherein said compound contains not more than two aromatic nuclei between said carrier moiety and a dye part that remaining linked to said aromatic nuclei is releasable by redox-reaction and wherein at least one of said aromatic nuclei is substituted with a R.sup.4 SO.sub.2 NH-- group as defined.
    Type: Grant
    Filed: February 18, 1987
    Date of Patent: October 11, 1988
    Assignee: Agfa-Gevaert, N.V.
    Inventors: Luc J. Vanmaele, Christian C. Van de Sande, Wilhelmus Janssens, Hans Vetter
  • Patent number: 4775613
    Abstract: A heat-developable light-sensitive material comprising a support having thereon at least one layer containing a light-sensitive silver halide, a reducing agent, a binder and an acetylene silver compound.The heat-developable light-sensitive material which contains the novel organic silver compound can provide images having high density and low fog when subjected to a short period of developing time even when a small amount of a base processor is used.
    Type: Grant
    Filed: March 31, 1986
    Date of Patent: October 4, 1988
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Hiroyuki Hirai, Hiroshi Hara, Ken Kawata
  • Patent number: 4772544
    Abstract: A heat-developable photographic material is disclosed wherein the photographic material comprising at least one of an acid or a salt thereof having an acid dissociation constant pKa of 7 or less.
    Type: Grant
    Filed: August 7, 1985
    Date of Patent: September 20, 1988
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Hiroyuki Hirai
  • Patent number: 4770989
    Abstract: A heat-developable color photosensitive element having a support bearing thereon at least one photographic component layer containing a photosensitive silver halide, an organic silver salt, a reducing agent, a dye donor substance and a binder. The photosensitive element is characterized by the photographic component layer which contains a thermal solvent and a binder which contains both a gelatin and a vinyl pyrrolidone polymer.
    Type: Grant
    Filed: May 4, 1987
    Date of Patent: September 13, 1988
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Tawara Komamura, Masaru Iwagaki, Takashi Sasaki, Fumio Ishii, Kunihiro Koshizuka
  • Patent number: 4767698
    Abstract: Cyan partial color images with increased light fastness and improved stability to moisture and heat may be produced by the dye diffusion process using cyan dyes corresponding to formula I released from dye releasing compounds. ##STR1## In the above formula, Q denotes a group for completing a pyridine or pyridazine ring optionally carrying a condensed aromatic ring;G denotes OH or NH--SO.sub.2 --R.sup.5 ;R.sup.1 denotes H or one, two or three substituents;R.sup.2 denotes H or a group with electron acceptor character preferably situated in an ortho-position to G;R.sup.3 denotes H, acylamino or a group such as G;R.sup.4 denotes H, SO.sub.2 --NR.sup.6 --R.sup.7 or NH--SO.sub.2 --R.sup.5 ;R.sup.5 denotes alkyl, aralkyl, aryl or NR.sup.6 --R.sup.7 ;R.sup.6, R.sup.7 denote H, alkyl or aralkyl or together form a group for completing a cyclic amino group.
    Type: Grant
    Filed: April 13, 1987
    Date of Patent: August 30, 1988
    Assignee: Agfa-Gevaert Aktiengesellschaft
    Inventors: Peter Bergthaller, Rudolf Stolzenburg, Paul Marx
  • Patent number: 4748108
    Abstract: In a dye diffusion transfer process the use of a photosensitive element incorporating hydroquinone-type or quinone-type redox-controlled yellow dye-releasing azo compounds containing in the releasable dye moiety a pyrazolone group carrying alkyl, aryl, aralkyl, hetaryl, or heterocyclyl on the 1-position and acylamido, alkylureido, cycloalkylureido, or arylureido on the 3-position, for improved color reproduction of the dye diffusion transfer image as a result of development and a redox-reaction. The invention also provides photosensitive elements incorporating such dye-releasing compounds.
    Type: Grant
    Filed: July 8, 1986
    Date of Patent: May 31, 1988
    Assignee: AGFA-Gevaert, N.V.
    Inventors: Christian C. Van de Sande, Piet Kok
  • Patent number: H782
    Abstract: A silver halide color photographic material in disclosed which comprises a support having thereon at least one silver halide emulsion layer, wherein the photographic material contains at least one compound represented by general formula (I) and at least one compound represented by general formula (II) in combination:Cp--(TIME).sub.n --X--Dye (I)wherein Cp represents a coupler residue capable of releasing --(TIME).sub.n --X--Dye upon coupling with an oxidation product of an aromatic primary amine developing agent; TIME represents a timing group; n represents 0 or a positive integer; Dye represents a dye residue, and X represents an auxochromic group of said dye; ##STR1## wherein R represents a hydrogen atom or a substituent; Y represents a hydrogen atom or a coupling-off group; Za, Zb and Zc each represents a methine group, a substituted methine group, .dbd.
    Type: Grant
    Filed: September 14, 1987
    Date of Patent: May 1, 1990
    Inventors: Mitsunori Ono, Koji Tamoto, Yoshisada Nakamura, Shingo Sato