Dye Developer Or Leuco Dye Developer Patents (Class 430/224)
  • Patent number: 8268017
    Abstract: Provided are a method of stabilizing a leuco dye storable as a liquid for a long time, a method of reducing nonspecific color development thereof at a time of a color development reaction, and a stable liquid reagent composition using the methods. The inventors of the present invention found that coexistence of the leuco dye with a specific reducing agent resulted in suppression of self color development and its remarkably improved stability in a solution, and that when a color development reaction of the leuco dye with hydrogen peroxide was performed, coexistence of the leuco dye, in a reaction solution, with another dye which had an absorption spectrum not influencing a measurement wavelength of the leuco dye and did not react with hydrogen peroxide suppressed nonspecific color development and lowered a reagent blank value, which was applied to an analytical reagent.
    Type: Grant
    Filed: February 21, 2008
    Date of Patent: September 18, 2012
    Assignee: Asahi Kasei Pharma Corporation
    Inventors: Shigeru Ueda, Takeshi Matsuoka, Akihiko Kan
  • Patent number: 7163782
    Abstract: A photothermographic imaging material including an organic silver salt, a binder, a reducing agent, coupler and a main developing agent which forms coloring images by reacting with the coupler, those which are on a support wherein the reducing agent comprises a compound represented by the following Formula (1), the coupler is a compound represented by the following Formula (CP1) and sum of maximum density of colorant images at maximum absorption wavelength formed by the coupler and the main developing agent is 0.01 or more and 0.
    Type: Grant
    Filed: March 23, 2004
    Date of Patent: January 16, 2007
    Assignee: Konica Minolta Holdings, Inc.
    Inventor: Narito Goto
  • Patent number: 7144694
    Abstract: A photothermographic imaging material including a support; an image forming layer containing an organic silver salt, a photosensitive silver halide, a binder and a silver ion reducing agent, the image forming layer being provided on the support; and a cyan coloring leuco dye.
    Type: Grant
    Filed: October 28, 2005
    Date of Patent: December 5, 2006
    Assignee: Konica Minolta Holdings, Inc.
    Inventors: Hiroshi Kashiwagi, Narito Goto
  • Patent number: 7141359
    Abstract: The object of the present invention is to provide a novel developer capable or realizing a thermal recording material superior in preservation stability (i.e., heat resistance, moisture resistance) of color images and non-image areas, while satisfying the recent request for high sensitivity, and a thermal recording material using the developer.
    Type: Grant
    Filed: May 31, 2002
    Date of Patent: November 28, 2006
    Assignees: API Corporation, Nippon Paper Industries, Co., Ltd.
    Inventors: Mamoru Suga, Kaori Suzuki, Yoshihide Kimura, Naomi Sumikawa
  • Patent number: 7115359
    Abstract: A photothermographic material having a support provided on at least one side of the support light-sensitive silver halide particles, an organic silver salt and a reducing agent, as well as a leuco dye of a specific structure and a compound of a specific structure.
    Type: Grant
    Filed: July 15, 2004
    Date of Patent: October 3, 2006
    Assignee: Konica Minolta Medical & Graphic, Inc.
    Inventors: Yasushi Usagawa, Takeshi Habu
  • Patent number: 7018790
    Abstract: A photothermographic imaging material including a support; an image forming layer containing an organic silver salt, a photosensitive silver halide, a binder and a silver ion reducing agent, the image forming layer being provided on the support; and a cyan coloring leuco dye.
    Type: Grant
    Filed: December 2, 2003
    Date of Patent: March 28, 2006
    Assignee: Konica Minolta Holdings, Inc.
    Inventors: Hiroshi Kashiwagi, Narito Goto
  • Patent number: 7005251
    Abstract: A silver salt photothermographic dry imaging material including non-photosensitive aliphatic carboxylic acid silver salts; a photosensitive emulsion containing photosensitive silver halide grains; a silver ion reducing agent; a binder; and a cyan coloring leuco dye. A percentage of the photosensitive silver halide grains having a mean particle size of 0.01 or more ?m and 0.04 ?m or less is 5% or more by mass and 50% or less by mass of total photosensitive silver halide grains by conversion into a silver amount.
    Type: Grant
    Filed: November 20, 2003
    Date of Patent: February 28, 2006
    Assignee: Konica Minolta Holdings, Inc.
    Inventors: Hiroshi Kashiwagi, Narito Goto
  • Publication number: 20040106074
    Abstract: A silver salt photothermographic dry imaging material including non-photosensitive aliphatic carboxylic acid silver salts; a photosensitive emulsion containing photosensitive silver halide grains; a silver ion reducing agent; a binder; and a cyan coloring leuco dye. A percentage of the photosensitive silver halide grains having a mean particle size of 0.01 or more &mgr;m and 0.04 &mgr;m or less is 5% or more by mass and 50% or less by mass of total photosensitive silver halide grains by conversion into a silver amount.
    Type: Application
    Filed: November 20, 2003
    Publication date: June 3, 2004
    Applicant: Konica Minolta Holdings, Inc.
    Inventors: Hiroshi Kashiwagi, Narito Goto
  • Publication number: 20030068568
    Abstract: The present invention is directed to a method of scanning silver-halide-containing color photographic and photothermographic film. In particular, the present invention comprises a photographic element comprising at least one infrared imaging dye-forming agent in a blue-sensitive color layer of the element, thereby forming at least one image record in the infrared region of the imagewise exposed and developed element. This expedient leads to the formation of high quality images when scanning photographic elements in which the silver halide, metallic silver, and/or any organic silver salts have not been removed.
    Type: Application
    Filed: August 13, 2001
    Publication date: April 10, 2003
    Inventors: James H. Reynolds, David H. Levy, Robert W. Kulpinski, Leif P. Olson, Wojciech K. Slusarek
  • 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: 6037095
    Abstract: A non-aqueous lithium ion secondary battery is composed of a positive electrode, a negative electrode, and non-aqueous electrolyte. In the battery, the positive electrode is composed of an positive electrode active material of the formula: Li.sub.x Ni.sub.1-y M.sub.y O.sub.2-z X.sub.a in which M is at least one element such as Mg, Ca, B, Al, Ga, In, Si, Sn, Ge, Pb and at least one transition metal element; X is a halogen atom; x, y, z and a are numbers satisfying the conditions of 0.2<x.ltoreq.1.2, 0<y.ltoreq.0.5, 0.ltoreq.z.ltoreq.1 and 0.ltoreq.a.ltoreq.2z, and the negative electrode is composed of amorphous metal complex oxide or a combination of crystalline and/or amorphous metal complex oxide and carbonaceous material.
    Type: Grant
    Filed: March 30, 1998
    Date of Patent: March 14, 2000
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Tsutomu Miyasaka
  • Patent number: 5843628
    Abstract: A color image formation method excellent in discrimination and color image stability after processing which comprises overlaying a heat developable color light-sensitive material with a complexing agent sheet in the presence of a small amount of water therebetween after or during imagewise exposure, said light-sensitive material comprising a support having provided thereon at least a light-sensitive silver halide, a binder, a coupler, a reducing agent and a slightly-water-soluble basic metal compound, said sheet comprising a support having provided thereon at least a compound forming a complex with a metal ion constituting said basic metal compound; and heat developing the light-sensitive material to obtain a color image thereon, wherein the silver chloride content of said silver halide is 80 mol % or more, said complexing agent sheet comprises a physical development nucleus and a solvent for a silver halide, and said reducing agent is at least one compound of specified phenols, hydrazines and hydrazones.
    Type: Grant
    Filed: November 15, 1996
    Date of Patent: December 1, 1998
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Toshiki Taguchi, Kiyoteru Miyake
  • 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: 5756275
    Abstract: There is disclosed novel color-developing agents of the formula (I-1), (I-2), (1-3), or (1-4). There is also disclosed silver halide photographic light-sensitive materials and image-forming methods, using the color-developing agent. ##STR1## wherein R.sup.1 represents a halogen atom or an aliphatic group substituted with at least one halogen atom; R.sup.2 represents a substituent; L represents --CONR.sup.4 --, --COO--, --CO--, --SO.sub.2 NR--, --C(.dbd.NR.sup.4)NR.sup.5 --, or --C(.dbd.NR.sup.4)O--; R.sup.3, R.sup.4, and R.sup.5 each independently represent a hydrogen atom, an aliphatic, aryl, or hererocyclic group; in formula (I-1), n is 1 or 2, m is 0 or 1, and the sum of n and m is 1 or 2; in formulae (I-2) to (I-4), n is 1 to 3, m is 0 to 2, and the sum of n and m is 1 to 3. R.sup.1 and R.sup.2, R.sup.1 and R.sup.1, and R.sup.2 and R.sup.2, respectively, do not bond together to form any ring. R.sup.
    Type: Grant
    Filed: November 26, 1996
    Date of Patent: May 26, 1998
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Hiroo Takizawa, Taiji Katsumata, Toshiyuki Makuta, Toshiki Taguchi
  • Patent number: 5663042
    Abstract: A thermographic element comprising in a non-aqueous binder medium a silver salt oxidizing agent in reactive association with a compound comprising a plurality of redox color releasing moieties such that oxidation of each redox color releasing moiety causes release from said compound of a thermally diffusible dye.The compounds many of which are new incorporate two or more developer moieties into a single molecule to minimize the diffusibility of the compound. Following oxidation, either directly by the silver salt or by means of a cross-oxidizing agent, each oxidized developer moiety releases a thermally diffusible dye. The compounds are of sufficient size and molecular weight to slow or prevent diffusion in imaging systems and yet possess several active developer moieties per molecule which is advantageous over known ballasted dye releasers which comprise bulky molecules with only a single developer moiety.
    Type: Grant
    Filed: February 3, 1995
    Date of Patent: September 2, 1997
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Duncan McL. A. Grieve, Justine A. Mooney, William E. Bottomley, John H. A. Stibbard, Andrew W. Mott, Robert J. D. Nairne, David C. Bays, Stephen S. C. Poon, Raymond J. Kenney, Gilbert L. Eian, Takuzo Ishida, Doreen C. Lynch, Roger A. Mader, Sharon M. Simpson, Kim M. Vogel
  • Patent number: 5512414
    Abstract: A photographic color diffusion transfer element is disclosed wherein said element comprises a single dimensionally stable support, wherein said support comprises an opaque and light reflecting layer, and coated thereon in reactive association and in sequence (1) a mordant layer for binding diffusible dyes, (2) a stripping layer, (3) one or more layers comprising radiation sensitive silver halide, a solid particle dispersion of a diffusible-dye forming compound, or radiation sensitive silver halide and a solid particle dispersion of a diffusible-dye forming compound, and (4) a barrier layer comprising a polymer that (a) allows the passage of solutions for processing said element when said element is contacted with an external processing bath and (b) blocks the diffusion out of said element of the diffusible dye formed from said solid particle dispersion of a diffusible-dye forming compound when said element is contacted with an external processing bath.
    Type: Grant
    Filed: September 23, 1993
    Date of Patent: April 30, 1996
    Assignee: Eastman Kodak Company
    Inventor: John Texter
  • Patent number: 5503961
    Abstract: A process is disclosed for forming multilayered polyimide structure from negative photosensitive polyimide precursors. An initial polyimide layer is deposited and imagewise exposed. The unexposed portions of the initial polyimide layer are inhibited and then a second polyimide layer is deposited and likewise imagewise exposed. The films are developed, thereby forming a multilayer polyimide structure. After formation of the multilayer polyimide structure, a conductive material is applied on a substrate and then the polyimide layers are lifted off thereby forming a desired pattern of metallization.
    Type: Grant
    Filed: November 2, 1994
    Date of Patent: April 2, 1996
    Assignee: International Business Machines Corporation
    Inventors: Harold G. Linde, Rosemary A. Previti-Kelly, Thomas J. Reen
  • Patent number: 5492804
    Abstract: A photothermographic element comprising a support bearing at least one heat-developable, photosensitive, image-forming photothermographic emulsion layer comprising:(a) a photosensitive silver halide;(b) a non-photosensitive, reducible source of silver;(c) a chromogenic leuco dye reducing agent; and(d) a binder;wherein the chromogenic leuco dye reducing agent is a chromogenic leuco redox-dye-releasing compound of the general formula: ##STR1## wherein: (i) Cp is a coupler group;(ii) N--D is a photographic developer group; and(iii) R.sup.1 is a --C(O)--NH--A--Dye group wherein Dye represents the chromophore of a thermally mobile dye; and A represents a single bond or a divalent linking group of the formula --X--R.sup.5 --L--, wherein R.sup.5 is a divalent hydrocarbon chain containing up to 12 carbon atoms, L is a single bond or a divalent group that binds the chromophore of the thermally mobile dye to R.sup.5, and X represents a single bond or an --SO.sub.2 -- group.
    Type: Grant
    Filed: June 30, 1994
    Date of Patent: February 20, 1996
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Raffaella Biavasco, Lori S. Harring, Larry R. Krepski, Daniel E. Mickus, Mark B. Mizen, Sharon M. Simpson, Cristina Soncini, Kim M. Vogel
  • Patent number: 5480747
    Abstract: An attenuated phase shifting mask has absorbers embedded (buried) in the mask substrate, instead of on the surface of the substrate. The buried absorbers allow for controlling attenuation and phase shifting parameters. The material composition and the thickness of the absorber regions determine the amount of attenuation that is to be achieved, as well as phase shifting in some instances. In other instances, offset distances of the absorbers from the surface of the mask control the phase shift. Light scattering and diffraction is reduced or eliminated by having the absorbers below the surface of the mask. By reducing light scattering and distortion, the mask of the present invention allows for PSM lithography techniques to be extended to ranges of shorter wavelength.
    Type: Grant
    Filed: November 21, 1994
    Date of Patent: January 2, 1996
    Assignee: Sematech, Inc.
    Inventor: Prahalad K. Vasudev
  • Patent number: 5472811
    Abstract: A multi-layer PSM structure with multi-layer optical coating disposed between a quartz substrate and a surrounding medium, which typically is air. The multi-layer coating is comprised of a high index of refraction material overlying the quartz and a lower index of refraction material overlying the first. The multi-layer coating essentially functions as an anti-reflective coating to reduce scattering and reflection at the interface boundaries.
    Type: Grant
    Filed: April 29, 1994
    Date of Patent: December 5, 1995
    Assignees: Sematech, Inc., Motorola Inc.
    Inventors: Prahalad K. Vasudev, Kah K. Low
  • Patent number: 5432041
    Abstract: Photothermographic elements capable of producing a high density yellow or magenta image upon image-wise exposure and thermal development at a relatively low temperature and for a short period of time are described. The photothermographic elements of the invention comprise coated on a support base at least one light-sensitive emulsion layer comprising (a) a leuco dye reducing reducing agent, (b) a photosensitive silver halide, (c) an organic silver compound capable of being reduced by the leuco dye reducing agent, and (d) a binder; wherein the leuco dye reducing agent thereto comprises a chromogenic yellow or magenta leuco dye compound.The photothermographic elements of the invention may be used to obtain yellow and magenta images of suitable density in single color or multicolor photothermographic articles. At the same time the chromogenic leuco dye is stable enough not to be oxidized by oxygen of the air or by simple heating and to limit the fog formation after development.
    Type: Grant
    Filed: December 3, 1993
    Date of Patent: July 11, 1995
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Raffaella Biavasco, Stefano Parodi, Sharon M. Simpson, Kim M. Vogel
  • Patent number: 5364733
    Abstract: A photothermographic element containing a transparent substrate having one major surface thereof containing the following layers sequentially coated thereon: an image-receiving layer; an opacifying layer; a first dry silver layer; an interlayer containing thermoplastic polymer; a second dry silver layer; an interlayer containing thermoplastic polymer; and a third dry silver layer, wherein the first, second, and third dry silver layers each contain a light-insensitive, reducible silver source; light-sensitive silver halide, and as a reducing agent for the light-insensitive, reducible silver source, a material oxidizable to a colored dye whose color differs from that capable of being formed in each other dry silver layer, each of the dry silver layers being individually sensitized to light of different wavelengths.
    Type: Grant
    Filed: July 20, 1993
    Date of Patent: November 15, 1994
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Raymond J. Kenney, Takuzo Ishida, Richard C. Cotner
  • Patent number: 5332654
    Abstract: A novel class of N-substituted triarylmethane sulfonamides is provided which undergo reversible oxidation into colored form and reversible reduction of the oxidized form into colorless form. Preferred embodiments comprise xanthene sulfonamides having N-aryl substituents, e.g., hydroquinone substituents. These compounds possess redox potentials ranging between about +200 to -500 millivolts and thus are useful as dyes for producing photographic, photothermographic, thermal, and pressure-induced images, as well as being useful as redox indicators in a wide variety of biological and chemical reactions.
    Type: Grant
    Filed: June 11, 1993
    Date of Patent: July 26, 1994
    Assignee: Polaroid Corporation
    Inventors: Myron S. Simon, Marcis M. Kampe, David P. Waller
  • Patent number: 5266453
    Abstract: A silver halide photographic light-sensitive material which provides an improved safelight property without adversely affecting the photographic properties of the light-sensitive material. The silver halide photographic light-sensitive material contains at least one compound represented by formula (I): ##STR1## wherein R.sub.1 and R.sub.2 each represent a hydrogen atom or a substitutable group; W represents a nitrogen atom or a carbon atom; Z represents --Y.sub.1 --(R.sub.3)n.sub.2 or R.sub.3 in which R.sub.3 represents a hydrogen atom or a substitutable group; n.sub.0, n.sub.1 and n.sub.2 each represents 0 or 1; h represents 1 or 2; R.sub.1 and R.sub.2 and R.sub.3 may combine with each other to form a hydrocarbon ring or a heterocyclic ring; Y.sub.1 represents --CO--, --CO(.dbd.NR.sub.4)--, --C(.dbd.S)--, --C(.dbd.N.sup.+ R.sub.5 R.sub.6)--, --SO--, --SO.sub.2 --, --C(C.dbd.CR.sub.7 R.sub.8)--,--R.sub.6 C.dbd.N--, or --R.sub.6 C.dbd.CR.sub.9 --in [(R.sub.1).sub.n1 --Y.sub.1 ] when n.sub.1 is 1 and in --Y.
    Type: Grant
    Filed: April 10, 1992
    Date of Patent: November 30, 1993
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Tetunori Matushita, Yoko Idogaki
  • Patent number: 5258279
    Abstract: A novel class of N-substituted triarylmethane sulfonamides is provided which undergo reversible oxidation into colored form and reversible reduction of the oxidized form into colorless form. Preferred embodiments comprise xanthene sulfonamides having N-aryl substituents, e.g., hydroquinone substituents. These compounds possess redox potentials ranging between about +200 to -500 millivolts and thus are useful as dyes for producing photographic, photothermographic, thermal, and pressure-induced images, as well as being useful as redox indicators in a wide variety of biological and chemical reactions.
    Type: Grant
    Filed: May 31, 1991
    Date of Patent: November 2, 1993
    Assignee: Polaroid Corporation
    Inventors: Myron S. Simon, Marcis M. Kampe, David P. Waller
  • Patent number: 5206112
    Abstract: A photothermographic composite structure for use in a solvent-free dye thermal positive imaging diffusion-transfer process comprising:(a) an image-receiving element comprising a polymeric dyeable image-receiving layer having a glass transition temperature in the range of 20.degree. to 200.degree. C., and(b) strippably adhered to said image-receiving element, an imageable photothermographic element comprising in at least one layer thereof a binder, a silver source material, photosensitive silver halide in catalytic proximity to said silver source material, and a formazan dye.
    Type: Grant
    Filed: June 27, 1991
    Date of Patent: April 27, 1993
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Richard C. Cotner, David C. Weigel, Kumars Sakizadeh
  • Patent number: 5185231
    Abstract: Certain fluoran dyes have been found to be effective reducing agents for silver ion in dry silver constructions. The fluoran dyes have the following structure: ##STR1## wherein: R.sup.1 represents methyl or n-butyl;R.sup.2 represents n-butyl or cyclohexyl;R.sup.3 represents hydrogen, methyl, or methoxy; andR.sup.4 represents ##STR2## where X represents halogen (preferably chlorine); and a binder.
    Type: Grant
    Filed: August 26, 1991
    Date of Patent: February 9, 1993
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: David C. Weigel
  • Patent number: 5171669
    Abstract: Water soluble polymers are useful in combination with cobalt(III) redox reagents. When incorporated with the polymers, the cobalt(III) reagents exhibit improved sensitivity compared to fresh solutions of the reagents. In preferred embodiments, the cobalt(III) reagents are coated on a support using the water soluble polymer as a binder. Small areas of the coated support are then cut out and placed in a buffer solution to provide a working reagent solution. The solution is particularly useful in the testing of urine for significant bacteriuria.
    Type: Grant
    Filed: May 4, 1987
    Date of Patent: December 15, 1992
    Assignee: Eastman Kodak Company
    Inventors: Brent A. Burdick, Robert W. Zercie
  • Patent number: 5168029
    Abstract: A multicolor recording material is disclosed, which comprises a support having provided thereon at least two layers each containing a leuco dye which is capable of forming a color by oxidation and a photo-oxidizing agent, wherein the leuco dyes contained in each layer are capable of forming different color from each other and the photo-oxidizing agents contained in each layer respond to light having different wavelength from each other.
    Type: Grant
    Filed: February 2, 1990
    Date of Patent: December 1, 1992
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Akira Igarashi, Yutaka Fujita
  • Patent number: 5141855
    Abstract: Reagents and methods for the determination of analytes are disclosed, using water soluble cobalt(III) complexes and metallizable dyes to form cobalt(III) complexes of the metallizable dyes. Analytes which can be determined include enzymes, cells and biological reductants, such as NADH, NADPH and ascorbate. Amplification is provided since one equivalent of the analyte provides more than one equivalent of the detectable species.
    Type: Grant
    Filed: July 28, 1986
    Date of Patent: August 25, 1992
    Assignee: Eastman Kodak Company
    Inventor: Eric R. Schmittou
  • Patent number: 5051333
    Abstract: An optical image-recording material comprising:(a) microcapsules, in which at least one leuco dye capable of forming a color by oxidation and at least one photo-oxidizing agent are enclosed together, and (b) at least one reducing agent not enclosed in the microcapsules, or(c) microcapsules, in which at least one reducing agent is enclosed, and (d) both at least one leuco dye capable of forming a color by oxidation and at least one photo-oxidizing agent not enclosed in the microcapsules,wherein the microcapsules have capsule walls made from a material which lowers its permeability barrier to at least one component selected from the photo-oxidizing agent and the reducing agent when the capsule wall material is heated above its glass transition temperature, and the leuco dye is a xanthene compound having an N-substituted anilino group substituted by an electron attracting group.
    Type: Grant
    Filed: June 21, 1990
    Date of Patent: September 24, 1991
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Naoto Yanagihara, Ken Iwakura, Tosiaki Endo, Keiso Saeki
  • Patent number: 4980265
    Abstract: A color photosensitive material and a process for producing an image using such a material are disclosed. The color photosensitive material comprises a support having thereon a silver halide and a dye releasing compound represented by formula (A). ##STR1## wherein Ar and Ar', which may be the same or different, each represents an aromatic group or a heterocyclic group, Ar and Ar' may be joined together to form a ring, and R represents an aromatic group, a heterocyclic group or a sulfonyl group.
    Type: Grant
    Filed: August 17, 1989
    Date of Patent: December 25, 1990
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Kozo Sato, Hiroyuki Hirai
  • Patent number: 4957848
    Abstract: A heat-developable color light-sensitive material is disclosed, comprising a support having thereon at least one layer containing a light-sensitive silver halide, a binder, a compound containing a color moiety represented by formula (A), and a compound or a precursor thereof which reacts with an oxidized compound formed from the compound of formula (A), thereby converting the oxidized compound into a nondiffusible form, said compound of formula (A) being represented by ##STR1## wherein R.sub.1, R.sub.2, and R.sub.3 each represents a hydrogen atom, an alkyl group, a cycloalkyl group, an aryl group, an aralkyl group, an alkoxy group, an aryloxy group, an acylamino group, an alkylthio group, an arylthio group, or a halogen atom, provided that at least one of R.sub.1, R.sub.2, and R.sub.
    Type: Grant
    Filed: May 10, 1988
    Date of Patent: September 18, 1990
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Osamu Takahashi, Koichi Koyama, Keizo Koya
  • Patent number: 4942107
    Abstract: An image-forming material and an image recording method for using the same are disclosed. The image-forming material comprises microcapsule and a reducing agent which is present outside of the microcapsules, wherein the microcapsules contain (a) a leuco dye capable of oxidatively developing a color, (b) a photo-oxidizing agent, and (c) a phenolic compound. The image-forming material exhibits excellent image reproducibility, preservability before use, and image preservability.
    Type: Grant
    Filed: March 8, 1989
    Date of Patent: July 17, 1990
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Keiso Saeki, Tosiaki Endo, Masato Satomura, Fumiaki Shinozaki
  • Patent number: 4888268
    Abstract: A silver halide photographic material, which contains at least one blocked photographic reagent having in the molecule thereof at least one group selected from ##STR1## group and capable of releasing a photographically useful reagent by cleavage of the --N--C--bond by a nucleophilic attack of a nucleophilic reagent on the carbonyl group and a subsequent intramolecular electron transfer reaction or intramolecular nucleophilic reaction and which has at least one photosensitive silver halide emulsion layer, is photographically processed in the presence of an amine. A photographic material which includes, in combination, a photographic reagent precursor capable of releasing a photographically useful reagent timely on photographic processing and a photosensitive silver halide emulsion layer is provided along with a method of processing the photographic material.
    Type: Grant
    Filed: August 16, 1988
    Date of Patent: December 19, 1989
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Isamu Itoh, Mitsunori Ono, Yoshio Inagaki
  • Patent number: 4847188
    Abstract: A thermally developable light-sensitive material having at least a light-sensitive silver halide, a reducing agent, a binder and a dye-providing material on a support is disclosed. The dye-providing material is a compound that releases or forms a diffusible dye as a function of development and which has a group capable of reacting with the nucleophilic agent.
    Type: Grant
    Filed: February 1, 1988
    Date of Patent: July 11, 1989
    Assignee: Konica Corporation
    Inventors: Tawara Komamura, Hidenobu Ohya
  • 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: 4766056
    Abstract: A heat-developable color light-sensitive material is disclosed, comprising a support having thereon at least one layer containing a light-sensitive silver halide, a binder, a compound containing a color moiety represented by formula (A), and a compound or a precursor thereof which reacts with an oxidized compound formed from the compound of formula (A), thereby converting the oxidized compound into a non-diffusible form, said compound of formula (A) being represented by ##STR1## wherein R.sub.1, R.sub.2, and R.sub.3 each represents a hydrogen atom, an alkyl group, a cycloalkyl group, an aryl group, an aralkyl group, an alkoxy group, an aryloxy group, an acylamino group, an alkylthio group, an arylthio group, or a halogen atom, provided that at least one of R.sub.1, R.sub.2, and R.sub.
    Type: Grant
    Filed: February 21, 1986
    Date of Patent: August 23, 1988
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Osamu Takahashi, Koichi Koyama, Keizo Koya
  • Patent number: 4740448
    Abstract: Diffusion transfer color films and processes are disclosed which use dye developer chemistry to form at least one color record and which use image dye-releasing thiazolidine chemistry to form at least one of the other color records.
    Type: Grant
    Filed: March 31, 1986
    Date of Patent: April 26, 1988
    Assignee: Polaroid Corporation
    Inventor: Peter O. Kliem
  • Patent number: 4729942
    Abstract: A method for forming an image comprising heating a light-sensitive material comprising a support having provided thereon at least a light-sensitive silver halide and a dye developer in the presence of a base and/or a base precursor after or simultaneously with imagewise exposure to imagewise distribute a mobile non-oxidation type dye developer, wherein the dye developer is a compound having a dye moiety having a ballast group which is split off upon heating in the presence of the base and/or base precursor and a developer moiety against the silver halide in one molecule, is disclosed. According to the method of the present invention, images which are improved in image identification and color separation characteristics are obtained by heat development of the light-sensitive material.
    Type: Grant
    Filed: August 19, 1986
    Date of Patent: March 8, 1988
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Osamu Takahashi, Kiyoshi Morimoto
  • Patent number: 4719175
    Abstract: There are described novel pyrazole compounds represented by the formula ##STR1## wherein Y is a silver halide developing substituent or a precursor thereof; R is --OH, --NH.sub.2 or --NHSO.sub.2 --R.sub.1 ; R.sub.1 is alkyl having from 1 to 6 carbon atoms or phenyl; and m and n are the same or different and each is an integer of from 1 to 6. The pyrazole compounds are useful as intermediates in the preparation of azo and azomethine dye developers or as silver halide developing agents.
    Type: Grant
    Filed: May 3, 1982
    Date of Patent: January 12, 1988
    Assignee: Polaroid Corporation
    Inventors: Efthimios Chinoporos, Elbert M. Idelson, Patrick F. King
  • Patent number: 4656117
    Abstract: There are described novel azo and azomethine dye developers which include a pyrazolone moiety having two silver halide developing groups. In one embodiment the dye developers are metal complexed. The dye developer compounds are useful in photographic products and processes.
    Type: Grant
    Filed: May 3, 1982
    Date of Patent: April 7, 1987
    Assignee: Polaroid Corporation
    Inventors: Efthimios Chinoporos, Elbert M. Idelson, Patrick F. King
  • Patent number: 4619784
    Abstract: There are disclosed diffusion transfer color processes and products which employ novel image dye-providing materials which provide image dyes having the chromophoric system represented by the formula ##STR1## X is H, alkyl, aryl or substituted aryl; W is H or alkyl, R is H or alkyl; m and n are each integers of from 2 to 6.The image dye-providing material includes a diffusion control moiety such as a hydroquinonyl group and may be diffusible or nondiffusible as a function of the diffusion control moiety.
    Type: Grant
    Filed: October 27, 1980
    Date of Patent: October 28, 1986
    Assignee: Polaroid Corporation, Patent Dept.
    Inventors: Louis Locatell, Jr., Charles M. Zepp, Ronald F. Cieciuch
  • Patent number: 4575482
    Abstract: Photographic materials which comprise, on a base, at least one layer containing an azo dyestuff of the formula ##STR1## in which R.sub.1 is hydrogen, an alkylsulfone, halogen, cyano or nitro, R.sub.2 is hydrogen, halogen, cyano or nitro, R.sub.3 is hydrogen, alkyl, halogen, cyano or nitro, B.sub.1 is an aromatic ring system, K.sub.1 is an aromatic amine and m.sub.1 is 1 or 2.
    Type: Grant
    Filed: November 14, 1983
    Date of Patent: March 11, 1986
    Assignee: Ciba-Geigy AG
    Inventor: John Lenoir
  • Patent number: 4551423
    Abstract: A photographic light-sensitive material comprising a support having provided thereon at least one light-sensitive silver halide emulsion layer in combination with an immobile LDA compound represented by the following general formula (I): ##STR1## wherein n, x, y and z each stands for an integer of 1 or 2; m stands for an integer of 1 or more; D stands for a group containing an electron donor or its precursor moiety; A stands for an organic group linking Nup to --E--Q--Col or D; Nup stands for a precursor of a nucleophilic group; E stands for an electrophilic center; Q is a divalent group; Col stands for a group containing a dye or its precursor moiety; Ball stands for a ballast group; L stands for a linking group; and M stands for an optional substituent, said LDA compound being capable of releasing a diffusible dye or its precursor upon redox reaction.
    Type: Grant
    Filed: April 6, 1984
    Date of Patent: November 5, 1985
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Koichi Koyama, Yasuhiro Noguchi, Masaharu Toriuchi
  • Patent number: 4548888
    Abstract: Photographic elements, diffusion transfer assemblages, coordination complexes and processes are described which employ a novel nondiffusible hydrazone compound capable of releasing at least one diffusible yellow dye or dye precursor thereof having the formula: ##STR1## wherein: (a) Z.sup.1 and Z.sup.2 each independently represents the atoms necessary to complete a 5- or 6-membered aromatic heterocyclic ring;(b) CAR represents a ballasted carrier moiety capable of releasing the diffusible yellow dye moiety or precursor thereof as a function of development;(c) R represents hydrogen, an alkyl or substituted alkyl group of from 1 to about 12 carbon atoms, an aryl or substituted aryl group of from about 6 to about 12 carbon atoms, a substituted or unsubstituted 5- or 6-membered aromatic heterocyclic ring, or CAR, and(d) n is 0, 1 or 2, with the proviso that when n is 0, then R is CAR.
    Type: Grant
    Filed: November 7, 1984
    Date of Patent: October 22, 1985
    Assignee: Eastman Kodak Company
    Inventor: Michael W. Crawley
  • Patent number: 4481278
    Abstract: Novel chrome complexed azo and azomethine yellow dye developers which include a substantially colorless symmetrical ligand. Also disclosed are photographic products and processes which utilize the dye developers.
    Type: Grant
    Filed: October 29, 1982
    Date of Patent: November 6, 1984
    Assignee: Polaroid Corporation
    Inventors: Patrick F. King, Stephen G. Stroud
  • Patent number: 4386216
    Abstract: Diffusion transfer color processes and products are disclosed employing image-dye providing materials providing magenta image dyes having the chromophoric system represented by the formula ##STR1## wherein each R is the same or different and is an alkyl group, and each X is the same or different and is hydrogen or an alkyl group (including substituted alkyl). The dye image-providing material includes a diffusion control moiety, such as a hydroquinonyl group, and may be diffusible or nondiffusible as a function of the diffusion control moiety.
    Type: Grant
    Filed: April 24, 1980
    Date of Patent: May 31, 1983
    Assignee: Polaroid Corporation
    Inventors: Louis Locatell, Jr., Howard G. Rogers, Ruth C. Bilofsky, Ronald F. Cieciuch, Charles M. Zepp
  • Patent number: 4386150
    Abstract: Diffusion transfer photographic color processes and products are described utilizing novel image dye-providing materials which provide image dyes having the chromophoric system represented by the formula ##STR1## wherein X is ##STR2## or --SO.sub.2 --R.sub.1 ; Z is H, alkyl or aryl; R is H, alkyl or aryl; DYE is any dye moiety; R.sub.1 is H, alkyl, aryl, --NH.sub.2, --NHR.sub.2, --N(R.sub.2).sub.2 or --OR.sub.2 ; R.sub.2 is H, alkyl or aryl; and m is 1 or 2. The image dye providing material includes a diffusion control moiety such as a hydroquinonyl group or a precursor thereof and may be diffusible or nondiffusible as a function of the diffusion control moiety.
    Type: Grant
    Filed: December 18, 1981
    Date of Patent: May 31, 1983
    Assignee: Polaroid Corporation
    Inventors: Stephen R. Herchen, Gary N. Widiger
  • Patent number: 4377632
    Abstract: Diffusion transfer film units and a diffusion transfer process operative therein are described which are capable of providing relatively high resolution monochromatic dye developer transfer images.
    Type: Grant
    Filed: December 24, 1981
    Date of Patent: March 22, 1983
    Assignee: Polaroid Corporation
    Inventor: William J. Pflingston