Silver Compound Other Than Halide, Per Se, Or Composition For Thermographic Process Patents (Class 430/617)
  • Publication number: 20030008247
    Abstract: Image-forming materials including photographic, thermographic, and thermally-developable imaging materials include one or more transparent electrically conductive, non-charging layers to provide antistatic control on one or both sides of subbed or unsubbed supports. The electrically conductive, non-charging layers comprise colloidal, electrically conductive polymer particles that can be dispersed in a film-forming binder in an amount to provide from about 10 to about 90 volume % of polymer particles. Particularly useful polymer particles include pyrrole-containing, thiophene-containing, and aniline-containing polymers. The particles generally exhibit a packed powder specific resistivity of 105 ohm-cm or less and generally have a mean diameter of 0.5 &mgr;m or less. The electrically conductive, non-charging layers generally exhibit a surface electrical resistivity of less than 1×1012 ohm per square.
    Type: Application
    Filed: May 6, 2002
    Publication date: January 9, 2003
    Inventors: Mark Lelental, Gary M. Mosehauer, Roger J. Owers, James L. Wakley
  • 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: 6497999
    Abstract: The invention is directed to a color photothermographic film in which particles comprising an organic silver salt is treated with a passivating agent. In particular, the present invention involves passivating the organic silver salts with an organic adsorbate that blocks the surface of the organic silver salt or ligand, resulting in a reduction of speed loss. The invention is also directed to a method of making a photothermographic element to improve raw stock keeping.
    Type: Grant
    Filed: November 21, 2001
    Date of Patent: December 24, 2002
    Assignee: Eastman Kodak Company
    Inventors: Gregg P. Bryant, JoAnn D. Hanna, Nancy B. Liebert, Mark E. Irving
  • Patent number: 6492076
    Abstract: This invention relates to a color photothermographic element comprising a support, at least one photothermographic imaging layer, and at least one antihalation layer or filter layer, wherein the antihalation or filer layer comprises an aqueous heat-bleachable composition comprising at least one zwitterionic 1-aminopyridinium dye having a methine linkage terminated by a substituted or unsubstituted heterocyclic nucleus.
    Type: Grant
    Filed: August 27, 2001
    Date of Patent: December 10, 2002
    Assignee: Eastman Kodak Company
    Inventors: Ramanuj Goswami, Mark E. Irving, David H. Levy
  • Patent number: 6485898
    Abstract: A photothermographic material comprising a defined amount of a compound represented by the following general formula as a reducing agent is disclosed. In the following general formula, R1 and R1′ each independently represent an alkyl group, at least one of which is a secondary or tertiary alkyl group; R2 and R2′ each independently represent hydrogen atom or a group that can be a substituent on benzene ring; L represents —S— group or a —CH(R3)— group where R3 represents hydrogen atom or an alkyl group; and X and X′ each independently represent hydrogen atom or a group that can be a substituent on benzene ring. The photothermographic material is characterized by providing sufficient image density by heat development, and showing good silver color tone and little change with time after the development.
    Type: Grant
    Filed: January 5, 2001
    Date of Patent: November 26, 2002
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Yasuhiro Yoshioka, Kouta Fukui, Makoto Suzuki
  • 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: 6479227
    Abstract: A thermographic recording element comprising a thermographic recording layer containing an organic silver salt and a reducing agent on a support is provided with an antistatic layer containing acicular conductive metal oxide particles having an aspect ratio of from 3 to 50. In another embodiment, the element is provided with at least two back layers, the outermost layer of which contains a hydrophobic polymer binder and another layer of which contains a matte agent. The element has improved transparency, conductivity and high-speed processing adaptability.
    Type: Grant
    Filed: February 5, 1999
    Date of Patent: November 12, 2002
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Toshiaki Kubo, Naohiro Nakayama
  • Patent number: 6475709
    Abstract: A method for recording an image on a thermographic material (m) provides a thermographic material, a transparent thermal head (TH) having energizable heating elements (Hi), and a radiation beam (L). The heating elements of the thermal head are activated and the radiation beam is passed through transparent parts of the thermal head. Herein, the total energy resulting from the thermal head and from the radiation beam has a level corresponding to a gradation of the image to be recorded. Further embodiments comprise e.g. holding the thermographic material on one and a same drum during both an imagewise exposing step and a heating step.
    Type: Grant
    Filed: November 30, 2000
    Date of Patent: November 5, 2002
    Assignee: AGFA-Gevaert
    Inventors: Hans Strijckers, Karsten Dierksen, Robert Overmeer, Patrick Van den Bergen
  • Patent number: 6472131
    Abstract: A non-photosensitive silver dimer compound comprises two different silver salts, provided that when the two different silver salts comprise straight-chain, saturated hydrocarbon groups as the silver coordinating ligands, those ligands differ by at least 6 carbon atoms. Many of these silver dimer compounds can be represented by the following Structure I: wherein each E is independently oxygen, sulfur, nitrogen, selenium, or tellurium, R and R′ are different alkyl groups, aryl groups, aromatic heterocyclic groups, or halo atoms, provided that when E is oxygen, R and R′ are both straight-chain, saturated hydrocarbon groups, those hydrocarbon groups differ from each other by at least 6 carbon atoms. These silver dimer compounds are useful in thermally-developable imaging materials including thermographic and photothermographic materials.
    Type: Grant
    Filed: March 20, 2001
    Date of Patent: October 29, 2002
    Assignee: Eastman Kodak Company
    Inventor: David R. Whitcomb
  • Patent number: 6472138
    Abstract: A black and white photothermographic material for laser exposure affording a large covering power and thus affording a high Dmax, and capable of suppressing desensitization in the course of the storage is provided.
    Type: Grant
    Filed: September 28, 2000
    Date of Patent: October 29, 2002
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Katsutoshi Yamane
  • Patent number: 6468730
    Abstract: Image recording materials, especially photothermographic light-sensitive image recording materials, that comprise a compound of formula (1) to acquire excellent image storage stability: wherein X1 and X2 each represent a halogen atom; X3 represents a hydrogen atom, a halogen atom or a univalent substituent group; L represents a divalent organic group; Y represents a divalent organic group containing a hetero atom, or a single bond; and Z represents an acidic functional group or a salt thereof.
    Type: Grant
    Filed: June 11, 1999
    Date of Patent: October 22, 2002
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Toshiki Fujiwara, Rikio Inoue
  • Patent number: 6465163
    Abstract: A heat developable light-sensitive material comprises a support, a light-sensitive layer and a non-light-sensitive layer. The light-sensitive layer contains silver halide and a reducing agent. The non-light-sensitive layer contains a cyanine dye represented by the formula (I) or a salt thereof and a base precursor: in which R1 is hydrogen, an aliphatic group, an aromatic group, —NR21R24, —OR21 or —SR21, each of R21 and R24 independently is hydrogen, an aliphatic group or an aromatic group, or R21 and R24 are combined to form a nitrogen-containing heterocyclic ring; R2 is hydrogen, an aliphatic group or an aromatic group; R3 is an aliphatic group; L1 is a methine chain consisting of an odd number of methines; and each of Z1 and Z2 independently is an atomic group forming a five-membered or six-membered nitrogen-containing heterocyclic ring.
    Type: Grant
    Filed: August 20, 2001
    Date of Patent: October 15, 2002
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Masami Sakurada, Masaki Noro, Itsuo Fujiwara, Yoshiharu Yabuki
  • Publication number: 20020146654
    Abstract: A heat-developable image recording material comprises a support, a photosensitive silver halide, a non-phosensitive organic silver salt, a reducing agent for a silver ion and a binder including a polymer latex, wherein polymer latex has a halogen ion content of not more than 500 ppm.
    Type: Application
    Filed: January 30, 2002
    Publication date: October 10, 2002
    Inventors: Yoshihisa Tsukada, Hajime Nakagawa, Tomokazu Yasuda
  • Patent number: 6458525
    Abstract: A method for preparing a photothermographic material comprising an organic silver salt is disclosed, comprising a step of treating the organic silver salt under a gas atmosphere containing an inert gas having a volume fraction of not less than 85% or under a gas atmosphere containing oxygen gas having a volume fraction of not more than 15%. Packaging the photothermographic material under the inert gas atmosphere is also disclosed.
    Type: Grant
    Filed: November 3, 2000
    Date of Patent: October 1, 2002
    Assignee: Konica Corporation
    Inventors: Hideki Takiguchi, Hitoshi Adachi, Hideki Hoshino, Shu Nishiwaki
  • Publication number: 20020136991
    Abstract: A photothermographic material comprising a support having thereon a photosensitive layer comprising non-photosensitive organic silver salt grains, photosensitive silver halide grains, a binder, a cross-linking agent, and a reducing agent,
    Type: Application
    Filed: December 18, 2001
    Publication date: September 26, 2002
    Inventor: Kazuyoshi Goan
  • Patent number: 6436622
    Abstract: Multilayer thermographic materials have improved adhesion between a polymeric support and film-forming polymer-containing layers disposed thereon. This improved adhesion is provided by including in the adhesion-promoting layer next to the support two or more polymers having specific properties. At least one of the polymers adheres the layer to the support, and at least one other polymer is compatible or of the same class as the film-forming polymer in the upper layer, such as a thermographic imaging layer. This adhesion-promoting layer can be provided as a very thin “carrier” layer during coating operations so that desired imaging effects and functional properties are obtained.
    Type: Grant
    Filed: November 1, 2001
    Date of Patent: August 20, 2002
    Assignee: Eastman Kodak Company
    Inventor: Thomas C. Geisler
  • 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
  • Publication number: 20020098451
    Abstract: A photothermographic material is disclosed, comprising a support having thereon at least an image forming layer and a first layer on the opposite side of the support from the image forming layer, wherein the first layer contains a vinyl type polymer latex and an aqueous-dispersible polymer selected from the group consisting of an aqueous-dispersible polyester, aqueous-dispersible polyurethane and aqueous-disperible cellulose.
    Type: Application
    Filed: September 6, 2001
    Publication date: July 25, 2002
    Inventors: Tadashi Arimoto, Takayuki Sasaki, Eiichi Ueda, Akihisa Nakajima, Chiaki Nagaike
  • Publication number: 20020098454
    Abstract: A non-photosensitive core-shell silver salt can be used in thermographic and photothermographic imaging compositions and materials. This core-shell silver salt includes one or more silver salts in the core, at least one of which is different from the one or more silver salts used in the shell. The molar ratio of the different silver salts in the core and shell is from about 0.01:1 to about 100:1.
    Type: Application
    Filed: November 2, 2001
    Publication date: July 25, 2002
    Inventors: David R. Whitcomb, Oanh Pham
  • Patent number: 6423486
    Abstract: A thermographic recording element having an image forming layer contains an organic silver salt, a reducing agent, an optional photosensitive silver halide, and a specific nucleating agent. The element has high Dmax, high sensitivity, satisfactory contrast, low fog, and minimal dependency of photographic properties on developing temperature.
    Type: Grant
    Filed: March 19, 2001
    Date of Patent: July 23, 2002
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Kohzaburoh Yamada, Hiroyuki Suzuki, Takashi Hoshimiya, Hirotomo Sasaki, Kohji Kawato, Toshihide Ezoe
  • Patent number: 6395466
    Abstract: A heat-developable image recording material containing an organic silver salt, a reducing agent and an organic binder characterized in that the reducing agent comprises a combination of two or more different kinds of reductive compounds exhibiting superadditivity was disclosed.
    Type: Grant
    Filed: April 12, 2000
    Date of Patent: May 28, 2002
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Kazunobu Katoh, Minoru Sakai
  • Publication number: 20020061484
    Abstract: A process for producing an aqueous dispersion comprising: preparing a dispersion of photosensitive silver halide and a binder or a surfactant in an aqueous medium; and subsequently either (a) adding a first silver salt to the silver halide dispersion and then adding a second silver salt; or (b) adding the second silver salt to the silver halide dispersion and then adding the first silver salt, wherein the aqueous dispersion is substantially free of a water-soluble metal or ammonium salt of an aliphatic carboxylic acid with greater than 12 carbon atoms, the first silver salt is a substantially light-insensitive and substantially water-insoluble silver salt of an organic carboxylic acid, and the second silver salt has a water-solubility greater than 0.1 g in 1 L of water at 20° C.; an aqueous dispersion obtainable therewith; a photothermographic recording material prepared with the aqueous dispersion; and a process for preparing the photothermographic recording material.
    Type: Application
    Filed: August 13, 2001
    Publication date: May 23, 2002
    Inventors: Herman Uytterhoeven, Johan Loccufier, Yvan Gilliams
  • Patent number: 6391537
    Abstract: There is disclosed a nanoparticulate dispersion of a silver carboxylate particles having on the surface of the particles a surface modifier which is a nonionic oligomeric surfactant based on vinyl polymer with an amido function. In particular, the surface modifier is acrylamide, methacrylamide or derivatives thereof. Also disclosed are various compositions including the dispersions including oxidation-reduction imaging forming compositions, thermographic elements and photothermographic compositions and elements. The preferred carboxylate is a silver salt of a long chain fatty acid such as silver behenate.
    Type: Grant
    Filed: January 18, 2001
    Date of Patent: May 21, 2002
    Assignee: Eastman Kodak Company
    Inventors: Mark Lelental, Alan R. Pitt, David A. Dickinson, James L. Wakley, Peter J. Ghyzel
  • Patent number: 6387611
    Abstract: There is disclosed an oxidation-reduction imaging forming composition comprising an aqueous based dispersion of (i) nanoparticulate silver carboxylate particles having on the surface of the particles a surface modifier which is a phosphoric acid ester and (ii) an organic reducing agent. In particular, the surface modifiers can be mixtures of mono- and di-esters of orthophosphoric acid and hydroxyl-terminated, oxyethylated long-chain alcohols or oxyethylated alkyl phenols or derivatives thereof. Also disclosed are various compositions including the dispersions including oxidation-reduction imaging forming compositions, thermographic elements and photothermographic compositions and elements. The preferred carboxylate is a silver salt of a long chain fatty acid such as silver behenate.
    Type: Grant
    Filed: January 18, 2001
    Date of Patent: May 14, 2002
    Assignee: Eastman Kodak Company
    Inventors: Mark Lelental, David A. Dickinson, James L. Wakley, Michael W. Orem, Peter J. Ghyzel
  • Patent number: 6383725
    Abstract: An emulsion comprising a substantially light-insensitive organic silver salt, photosensitive silver halide in catalytic association with the substantially light-insensitive organic silver salt and a binder, wherein the emulsion further comprises a polyhalide compound selected from the group consisting of quaternary ammonium polyhalides, quaternary phosphonium polyhalides and ternary sulphonium polyhalides, which satisfies a test specified in the description, or a product of a reaction between the polyhalide compound and a reducing species present in said emulsion; a process for producing a photothermographic recording material, capable of image formation without preliminary heating prior to exposure, comprising a photo-addressable thermally developable element incorporating the emulsion; and a photothermographic recording process utilizing the photothermographic recording material.
    Type: Grant
    Filed: December 13, 2000
    Date of Patent: May 7, 2002
    Assignee: AGFA-Gevaert
    Inventors: Johan Loccufier, Ivan Hoogmartens, Hans Strijckers
  • Patent number: 6383731
    Abstract: The object of the present invention is to provides a novel polyhalogenomethylsulfonyl compound which can be used for providing a thermally processed image recording material which has a high sensitivity, gives less fog, and has a good stock stability and a good image storage stability of dark and high temperature or light storage. According to the present invention, there is provided a polyhalogenomethylsulfonyl compound represented by the following formula (1), or salts thereof, or hydrates or solvates thereof: wherein Z1 and Z2 each independently represents a halogen atom; A represents a hydrogen atom or a halogen atom; and R1 represents an alkyl group having from 2 to 12 carbon atoms, which may have one or more substituents, an alkenyl group having from 2 to 12 carbon atoms, which may have one or more substituents, or an alkinyl group having from 2 to 12 carbon atoms, which may have one or more substituents.
    Type: Grant
    Filed: August 20, 2001
    Date of Patent: May 7, 2002
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Masaru Takasaki, Katsuyuki Watanabe, Hisashi Okamura
  • 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
  • Publication number: 20020048732
    Abstract: A photothermographic material comprising at least (a) a photosensitive silver halide, (b) a reducible silver salt, (c) a reducing compound represented by the following general formula (1), and (d) a binder:
    Type: Application
    Filed: March 16, 2001
    Publication date: April 25, 2002
    Inventors: Toyohisa Oya, Kouta Fukui, Yasuhiro Yoshioka, Kazunobu Katoh
  • Publication number: 20020048716
    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): 1
    Type: Application
    Filed: July 24, 2001
    Publication date: April 25, 2002
    Inventors: Katsuyuki Watanabe, Masaru Takasaki
  • Patent number: 6376138
    Abstract: Growth and clustering of halftone dots is a drawback in the reproduction of halftoned continuous tone images on prior art recording materials. Certain thermographic materials show a local microdot shrink effect called negative cross-talk upon neighboring microdots when exposing a microdot. Exposing these materials according to the frequency modulated halftone data of an image results in better tone rendering and lower noise due to lower dot clustering or negative cross-talk characteristics.
    Type: Grant
    Filed: October 9, 1998
    Date of Patent: April 23, 2002
    Assignee: AGFA-Gevaert
    Inventors: Bart Horsten, Paul Delabastita, Jacobus Bosschaerts, Luc Schellekens
  • Patent number: 6376165
    Abstract: A method of preparing a photothermographic material, comprising a support having thereon at least a layer, the method comprising the steps of: coating a coating solution containing an organic silver salt, a photosensitive silver halide and a reducing agent on the support to form a coated material and subjecting the coated material to a thermal treatment at a temperature of 40 to 120° C. under a tension of 0.01 to 30 kg/cm2.
    Type: Grant
    Filed: September 15, 2000
    Date of Patent: April 23, 2002
    Assignee: Konica Corporation
    Inventors: Hidetoshi Ezure, Kenji Ohnuma, Yuji Hosoi
  • Patent number: 6368778
    Abstract: Photothermographic materials provide images having improved image stability due to the presence of certain image stabilizing compounds in a silver-containing layer. These image stabilizing compounds are fluorenone, fluorene, coumarin, naphthalic acid imide, pyrazoline, or anthracene compounds. In particular, they reduce image browning that may occur from the presence of various components in the materials.
    Type: Grant
    Filed: August 15, 2000
    Date of Patent: April 9, 2002
    Assignee: Eastman Kodak Company
    Inventors: Steven H. Kong, Paul G. Skoug, Kumars Sakizadeh
  • Publication number: 20020037483
    Abstract: A polyester film is disclosed comprising on its upper side a latex subbing layer, and a gelatin subbing layer which contains a black spacing agent. This polyester film can be advantageously used as support for several imaging elements, such as photographic materials, (photo)thermographic materials, and ink jet recording elements.
    Type: Application
    Filed: June 26, 2001
    Publication date: March 28, 2002
    Inventors: Roland Claes, Etienne Van Thillo
  • Patent number: 6358677
    Abstract: A heat-developable recording material having, at least on one side and the same side of the support, (a) reducible silver salt, (b) a reducing agent other than a compound represented by the general formula (1) below, (c) a binder, and (d) at least one compound represented by the general formula (1) below; content of the compound represented by the general formula (1) being 0.01 to 100 mol % with respect to the reducing agent: [where in the general formula (1), R1, R2, R3, X1 and X2 independently represent a hydrogen atom; halogen atom; or substituent which is bound to the benzene ring via a carbon atom, oxygen atom, nitrogen atom, sulfur atom or phosphorus atom. At least either X1 or X2 represents a group represented as —NR4R5, where R4 and R5 independently represent a group selected from a hydrogen atom, alkyl group and the like.
    Type: Grant
    Filed: March 17, 2000
    Date of Patent: March 19, 2002
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Masahiko Taniguchi, Katsuyuki Watanabe, Shigeo Hirano, Minoru Sakai
  • Patent number: 6355407
    Abstract: A thermally developable photosensitive material comprising organic silver salts, photosensitive silver halides, and reducing agents. The thermally developable photosensitive material has a support having am moisture content of not more than 0.5 percent by weight.
    Type: Grant
    Filed: February 16, 2000
    Date of Patent: March 12, 2002
    Assignee: Konica Corporation
    Inventors: Yasuhiko Takamuki, Hidetoshi Ezure, Tetsuo Shima, Hideki Komatsu, Kazuyoshi Goan
  • Publication number: 20020025488
    Abstract: A heat developable light-sensitive material comprises a support, a light-sensitive layer and a non-light-sensitive layer. The light-sensitive layer contains silver halide and a reducing agent.
    Type: Application
    Filed: August 20, 2001
    Publication date: February 28, 2002
    Applicant: FUJI PHOTO FILM CO., LTD.
    Inventors: Masami Sakurada, Masaki Noro, Itsuo Fujiwara, Yoshiharu Yabuki
  • Patent number: 6350569
    Abstract: A heat-developable photographic material which contains a particular class of polyhalogenated organic compound having a water-soluble group in one or more layers on the side of the image-forming layer. The heat-developable photographic material can be obtained at a low cost and has much reduced fog and excellent storage stability.
    Type: Grant
    Filed: March 30, 2000
    Date of Patent: February 26, 2002
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Katsuyuki Watanabe, Hiroyuki Suzuki, Masaru Takasaki, Shigeo Hirano
  • Publication number: 20020015926
    Abstract: Image recording materials, especially photothermographic light-sensitive image recording materials, that comprise a compound of formula (1) to acquire excellent image storage stability: 1
    Type: Application
    Filed: June 11, 1999
    Publication date: February 7, 2002
    Inventors: TOSHIKI FUJIWARA, RIKIO INOUE
  • Patent number: 6344312
    Abstract: The present application discloses a heat developable photosensitive material having on a support a non-photosensitive silver salt, a photosensitive silver halide, and a binder, which has a layer formed by coating a coating composition comprising an emulsion containing both of the photosensitive silver halide and a low molecular weight gelatin having a molecular weight of 500 to 60,000. The heat developable photosensitive material provides excellent photographic properties such as low fog, high Dmax, high sensitivity, and the like, as well as good coating surface.
    Type: Grant
    Filed: February 10, 2000
    Date of Patent: February 5, 2002
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Takahiro Goto
  • Publication number: 20020012886
    Abstract: The present invention relates to a novel blocked phenylenediamine developer useful, in reactive association, for enabling, on development, a non-magenta color, for example a cyan color, from a dye-forming coupler. In one embodiment, the developer has the property that the dye color formed with the coupler is distinctly different from the color formed by the same coupler with an oxidized form of the conventional developer 4-(N-ethyl-N-2-hydroxyethyl)-2-methylphenylenediamine. The invention is also directed to a light-sensitive silver-halide color photographic element comprising the blocked developing agent according to the present invention.
    Type: Application
    Filed: May 31, 2001
    Publication date: January 31, 2002
    Applicant: Eastman Kodak Company
    Inventors: Richard P. Szajewski, Lyn M. Irving
  • Publication number: 20020009677
    Abstract: A light sensitive silver halide color photographic element having a common chromogenic coupler and a distinct developer associated with each color forming layer unit is disclosed. In a first embodiment, the light sensitive silver halide color photographic element has a red light sensitive silver halide layer unit and a first blocked coupling developer, a green light sensitive silver halide layer unit and a second blocked coupling developer and a blue light sensitive silver halide layer unit having a third blocked coupling developer and wherein each layer unit has the same chromogenic coupler. In a second embodiment, the light sensitive silver halide color photographic element has a red light sensitive silver halide layer unit and a first blocked coupling developer, a green light sensitive silver halide layer unit and a second blocked coupling developer and a blue light sensitive silver halide layer unit having a third blocked coupling developer.
    Type: Application
    Filed: May 31, 2001
    Publication date: January 24, 2002
    Inventors: Richard P. Szajewski, Lyn M. Irving
  • Patent number: 6333147
    Abstract: A thermally processed image forming material having on one side of a support at least one image recording layer containing at least one kind of non-photosensitive organic silver salt, a reducing agent for silver ion, and a binder; characterized by having at least one non-recordable layer formed by coating and drying a coating liquid containing a dicarboxylic acid and having a pH of 3.5 or above was disclosed. The thermally processed image forming material has an improved property of the coated surface and prevent coating streaks.
    Type: Grant
    Filed: May 11, 2000
    Date of Patent: December 25, 2001
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Ichizo Toya
  • Publication number: 20010038982
    Abstract: A heat-developable color light-sensitive material which contains at least, on a support, a light-sensitive silver halide emulsion, a binder, and a dye-providing compound, wherein the light-sensitive material contains at least one compound represented by formula (I) in, for example, a protective layer: formula (I) 1
    Type: Application
    Filed: March 1, 2001
    Publication date: November 8, 2001
    Inventors: Kazuki Uehara, Nobuhiro Nishita
  • Publication number: 20010038984
    Abstract: A thermographic recording element having an image forming layer contains an organic silver salt, a reducing agent, an optional photosensitive silver halide, and a specific nucleating agent. The element has high Dmax, high sensitivity, satisfactory contrast, low fog, and minimal dependency of photographic properties on developing temperature.
    Type: Application
    Filed: March 19, 2001
    Publication date: November 8, 2001
    Applicant: Fuji Photo Film Co., Ltd.
    Inventors: Kohzaburoh Yamada, Hiroyuki Suzuki, Takashi Hoshimiya, Hirotomo Sasaki, Kohji Kawato, Toshihide Ezoe
  • Patent number: 6312885
    Abstract: A photothermographic or thermographic material comprising a support having provided thereon or thereabove at least one image forming layer having its thermal expansion coefficient in the range of 1.0 to 1.5 and having provided on or above said at least one image forming layer a layer which has its thermal expansion coefficient of at least 0.9 and lower than 1.0 and comprises at least one kind of polymer latex having a glass transition temperature of not higher than a heat development temperature, said layer which has its thermal expansion coefficient of at least 0.9 and lower than 1.0 being farther from the support than the at least one image forming layer.
    Type: Grant
    Filed: March 20, 2000
    Date of Patent: November 6, 2001
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Munehisa Fujita, Ichizo Toya
  • Patent number: 6309814
    Abstract: A heat developable photosensitive material having on a support a non-photosensitive sliver salt, a photosensitive sliver halide, and a binder, which has an image forming layer containing the photosensitive sliver halide and comprises cyclic ketone or cyclic imine compound having a specific structure in combination with a nucleation agent on the side that the image forming layer is formed. This heat developable photosensitive material is an excellent high contrast sensitive material having a good stability.
    Type: Grant
    Filed: February 1, 2000
    Date of Patent: October 30, 2001
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Tadashi Ito
  • Patent number: 6306573
    Abstract: A recording material comprising a support, a thermosensitive element and a protective layer therefor, the thermosensitive element comprising a substantially light-insensitive organic silver salt, an organic reducing agent therefor in thermal working relationship therewith and a binder, wherein the thermosensitive element further comprises in reactive association with the substantially light-insensitive organic silver salt and the organic reducing agent a substituted, exclusive of groups having an exclusively electron withdrawing character, or unsubstituted compound with an unsaturated 5-membered heterocyclic ring annulated with an aromatic ring system, the ring consisting of nitrogen and carbon atoms with at least one of the nitrogen atoms having a hydrogen atom and none of the carbon atoms being directly linked to a sulfur atom or being part of a carbonyl-group; a production process therefor and a thermal image recording process utilizing the recording-material.
    Type: Grant
    Filed: December 13, 1999
    Date of Patent: October 23, 2001
    Assignee: Agfa-Gevaert
    Inventors: Bartholomeus Horsten, Johan Loccufier, Geert Defieuw, Luc Leenders
  • Patent number: 6306566
    Abstract: A heat developable light-sensitive material comprises a support, a light-sensitive layer and a non-light-sensitive layer. The light-sensitive layer contains silver halide and a reducing agent. The non-light-sensitive layer contains a cyanine dye represented by the formula (I) or a salt thereof and a base precursor: in which R1 is hydrogen, an aliphatic group, an aromatic group, —NR21R24, —OR21 or —SR21, each of R21 and R24 independently is hydrogen, an aliphatic group or an aromatic group, or R21 and R24 are combined to form a nitrogen-containing heterocyclic ring; R2 is hydrogen, an aliphatic group or an aromatic group; R3 is an aliphatic group; L1 is a methine chain consisting of an odd number of methines; and each of Z1 and Z2 independently is an atomic group forming a five-membered or six-membered nitrogen-containing heterocyclic ring.
    Type: Grant
    Filed: October 21, 1998
    Date of Patent: October 23, 2001
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Masami Sakurada, Masaki Noro, Itsuo Fujiwara, Yoshiharu Yabuki
  • Patent number: 6306572
    Abstract: A substantially light-insensitive black and white thermographic material including a support and a thermosensitive element, containing a substantially light-insensitive organic silver salt, a reducing agent therefor in thermal working relationship therewith and a binder, wherein the binder is a water-dispersible film-forming polymer with covalently bonded moieties with one or more acid groups or anhydrides thereof and the thermographic material is thermally developable under substantially water-free conditions; and a process for producing the substantially light-insensitive black and white thermographic material comprising the steps of: producing an aqueous dispersion of the substantially light-insensitive organic silver salt; producing one or more aqueous coating compositions containing together the aqueous dispersion of the substantially light-insensitive organic silver salt, the reducing agent and the binder; and applying the one or more aqueous coating compositions to the support thereby forming after dry
    Type: Grant
    Filed: August 17, 1998
    Date of Patent: October 23, 2001
    Assignee: Agfa-Gevaert
    Inventors: Carlo Uyttendaele, Huub Van Aert, Frank Louwet, Ivan Hoogmartens
  • Patent number: 6306571
    Abstract: A process for producing an aqueous dispersion I containing particles including a substantially light-insensitive organic heavy metal salt A with a solubility in 100 mL of water of less than 10−3 g at 20° C. comprising the steps of: (i) producing an aqueous dispersion II containing particles containing a salt B with a solubility in 100 mL of water between 1.5 g and 0.001 g at 20° C.; and (ii) converting the salt B in the particles of the aqueous dispersion II into the organic heavy metal salt A, wherein the organic heavy metal salt A and the salt B have a common cation; and a production process for thermographic and photothermographic materials therewith.
    Type: Grant
    Filed: December 29, 1997
    Date of Patent: October 23, 2001
    Assignee: Agfa-Gevaert
    Inventors: Hubert Vandenabeele, Herman Uytterhoeven