Synthetic Resin Or Cellulose Derivative Containing Patents (Class 430/531)
  • Patent number: 6197482
    Abstract: The present invention is an imaging element which includes a support, an imaging layer superposed on a side of said support and an overcoat overlying the imaging layer. The overcoat is composed of an organic polymer. The overcoat is discontinuous such that a fraction of the surface area of the imaging layer remains uncovered by said polymer, wherein the fraction of area not covered by the said polymer is from 0.02 to 0.98. The present invention is a photographic which includes a support, a silver halide emulsion layer superposed on a side of said support and an overcoat overlying the silver halide layer. The overcoat is composed of an organic polymer. The overcoat is discontinuous such that a fraction of the surface area of the silver halide emulsion layer remains uncovered by said polymer, wherein the fraction of area not covered by the said polymer is from 0.02 to 0.98. In one embodiment, the discontinuous overcoat is a series of parallel stripes.
    Type: Grant
    Filed: May 14, 1999
    Date of Patent: March 6, 2001
    Assignee: Eastman Kodak Company
    Inventors: Lloyd A. Lobo, Mridula Nair, Rukmini B. Lobo, Barry A. Fitzgerald
  • Patent number: 6194130
    Abstract: The present invention is a photographic element which includes a support, at least one silver halide emulsion layer superposed on the support and a processing-solution-permeable protective overcoat overlying the silver halide emulsion layer. The processing solution permeable overcoat is composed of a urethane-containing component having acid functionalities wherein a weight ratio of a polyurethane-containing component in the copolymer comprises from 20 to 100 percent and a weight ratio of an optional vinyl component in the copolymer comprises from 0 to 80 percent, which urethane-containing component of the overcoat may comprise either a single polyurethane polymer or an interpenetrating network comprising two or more polymers. The overcoat further comprises a polyvinyl alcohol polymer having a molecular weight of about 150,000 or less, with the proviso that the degree of hydrolysis is less than 95% when the molecular weight is more than about 100,000.
    Type: Grant
    Filed: November 23, 1999
    Date of Patent: February 27, 2001
    Assignee: Eastman Kodak Company
    Inventors: Mridula Nair, Tamara K. Jones, Tiecheng A. Qiao
  • Patent number: 6190846
    Abstract: The present invention is an imaging element which includes a support, an image-forming layer superposed on the support and an electrically-conductive layer superposed on the support. The electrically-conductive layer is composed of an electrically-conductive polymer and a polyurethane film-forming binder having a tensile elongation to break of at least 50% and a Young's modulus measured at 2% elongation of at least 50000 psi.
    Type: Grant
    Filed: October 15, 1998
    Date of Patent: February 20, 2001
    Assignee: Eastman Kodak Company
    Inventors: Debasis Majumdar, Dennis J. Eichorst, Kenneth L. Tingler
  • Patent number: 6191062
    Abstract: A photocatalytic functional material having an excellent photocatalytic activity even by a low temperature heat treatment and having a high mechanical strength of the surface. The photocatalytic functional material of the present invention comprises a surface layer (a photocatalytic functional layer) containing a photocatalyst, an electron trapping metal and a photodegradation-resistant matrix. Though the major proportion of the photocatalyst (TiO2 particles, and the like) in the photocatalytic functional layer are covered with the photodegradation-resistant matrix (a thermosetting resin, and the like), the electron-trapping metal effectively traps the electrons generated by the photocatalytic reaction, retains positive holes and generates active oxygen species, so that the photocatalytic function such as deodorant and antimicrobial activities can be fully exhibited.
    Type: Grant
    Filed: May 15, 1997
    Date of Patent: February 20, 2001
    Assignee: Toto Ltd.
    Inventors: Makoto Hayakawa, Makoto Chikuni, Toshiya Watanabe
  • Patent number: 6187518
    Abstract: The present invention is a photographic element which includes a support, at least one silver halide emulsion superposed on a front side of the support and an outermost backing layer superposed on a backside of the support. The outermost backing layer is composed of a hydrophobic binder and a hydrophilic binder wherein the backing layer has an advancing water contact angle of 70 or greater and a receding water contact angle of at least 40 less than the advancing water contact angle.
    Type: Grant
    Filed: October 23, 1998
    Date of Patent: February 13, 2001
    Assignee: Eastman Kodak Company
    Inventors: Raymond T. Jones, Ravi Sharma, Alfred B. Fant
  • Patent number: 6187507
    Abstract: The invention provides a lithographic printing plate precursor comprising a grained and anodized aluminium substrate having coated thereon a silver halide emulsion layer, the back surface of said substrate being coated with an inert coating which does not chemically or physically interact with an adjacent silver halide layer when two plates are placed in front to back contact. Fogging of the silver halide layer is avoided and the use of the back coating eliminates the requirement for the use of tissue interleaving when wrapping and packing the lithographic printing plate precursors.
    Type: Grant
    Filed: December 15, 1999
    Date of Patent: February 13, 2001
    Assignee: Agfa-Gevaert, N.V
    Inventors: Allen Peter Gates, Jonathan William Goodin, John Michael Kitteridge, Malcolm James Mallison, Roland Robinson, Philip John Watkiss
  • Patent number: 6187501
    Abstract: The invention relates to an imaging member comprising a substrate, at least one oriented polymer sheet adhered to said substrate and a binder layer between said at least one oriented polymer sheet and said substrate, wherein said binder layer comprises a binder polymer that has an energy to break of between 9.0×105 J/m3 and 3.5×107 J/m3.
    Type: Grant
    Filed: August 10, 1999
    Date of Patent: February 13, 2001
    Assignee: Eastman Kodak Company
    Inventors: Peter T. Aylward, Robert P. Bourdelais, Thaddeus S. Gula
  • Patent number: 6187522
    Abstract: The present invention is an imaging element having, a support, an image-forming layer superposed on the support and an outermost scratch resistant antistatic layer superposed on the support. The outermost scratch resistant antistatic layer has a thickness between 0.6 and 10 microns. The scratch resistant layer is composed of a polymer having a modulus greater than 100 MPa measured at 20° C. and a tensile elongation to break greater than 50%, a filler particle having a modulus greater than 10 GPa, and an electrically conducting polymer. The volume ratio of the polymer to the filler particle is between 70:30 and 40:60 and the electrically conducting polymer is present at a weight concentration based on a total dried weight of the scratch resistant layer of between 1 and 10 weight percent.
    Type: Grant
    Filed: March 25, 1999
    Date of Patent: February 13, 2001
    Assignee: Eastman Kodak Company
    Inventors: Debasis Majumdar, Charles C. Anderson
  • Patent number: 6187528
    Abstract: A photothermographic recording material comprising a support and a photo-addressable thermally developable element comprising photosensitive silver halide in catalytic association with a substantially light-insensitive organic silver salt, an organic reducing agent for the substantially light-insensitive organic silver salt in thermal working relationship therewith and a water-soluble or water-dispersible binder, characterized in that the substantially light-insensitive organic silver salt is a silver salt of an organic carboxylic acid, the photo-addressable thermally developable element further comprises a non-ionic or anionic surfactant and the photo-addressable thermally developable element is coatable from an aqueous medium and is capable of producing stable images without a wet-processing step; a process for producing the photothermographic recording material and a photothermographic recording process therefor.
    Type: Grant
    Filed: January 20, 1998
    Date of Patent: February 13, 2001
    Assignee: Agfa-Gevaert
    Inventors: Herman Uytterhoeven, Yvan Gilliams, Jan Gilleir
  • Patent number: 6187524
    Abstract: A photographic polyester film and a manufacturing method therefor. The photographic polyester film includes a polyester base film, a primer layer formed of polyurethane resin on at least one surface of the polyester base film, and a subbing layer formed of a hydrophillic polymer on at least one surface of the primer layer. Also, a photosensitive layer may be stacked on the subbing layer. The photographic polymer film having the primer layer, the subbing layer and the photosensitive layer exhibits excellent interlayer adhesiveness between the hydrophobic polyester base film and the hydrophilic sensitive layer.
    Type: Grant
    Filed: March 17, 1999
    Date of Patent: February 13, 2001
    Assignee: SKC Co., Ltd.
    Inventor: Yong-in Park
  • Patent number: 6187521
    Abstract: The present invention is an imaging element which includes a support, an image forming layer superposed on the support; and at least one layer superposed on the support. The at least one layer superposed on the support is formed from a non-aqueous coating composition of a composite wax particle composed of a wax phase and a non-crosslinked polymer phase and an organic solvent. The wax phase includes a wax having a melting point of greater than 30° C. The wax comprises greater than 80% by weight of the wax phase. The wax phase to non-crosslinked polymer phase ratio is greater than 30/70 and less than 90/10.
    Type: Grant
    Filed: December 28, 1998
    Date of Patent: February 13, 2001
    Assignee: Eastman Kodak Company
    Inventors: Yongcai Wang, Janglin Chen, Dwight W. Schwark, James L. Bello
  • Patent number: 6177239
    Abstract: The present invention is an imaging element which includes a support, an image forming layer superposed on the support and at least one layer superposed on the support. The at least one layer is formed from a non-aqueous coating composition composed of a composite wax particle having a wax phase and a non-crosslinked polymer phase. The wax phase includes a wax having a melting point of greater than 30° C., the wax comprising greater than 80% by weight of the wax phase. The at least one layer has a dry coating weight of from 1 to 300 mg/m2.
    Type: Grant
    Filed: December 28, 1998
    Date of Patent: January 23, 2001
    Assignee: Eastman Kodak Company
    Inventors: Yongcai Wang, Janglin Chen, Dwight W. Schwark
  • Patent number: 6177240
    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, and minimal dependency of photographic properties on developing conditions.
    Type: Grant
    Filed: November 17, 1998
    Date of Patent: January 23, 2001
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Kohzaburoh Yamada, Hiroyuki Suzuki, Toshihide Ezoe
  • Patent number: 6174661
    Abstract: The present invention is a photographic element containing a support, at least one light sensitive emulsion layer superposed on the first side of the support, and an outermost lubricant layer superposed on the support. The outermost layer includes more than 80 percent by weight of a composite wax particle. The composite wax particle includes a wax phase and a non-crosslinked polymer phase. The wax phase is greater than 80 percent by weight of a wax which has a melting point of greater than 30° C. In one embodiment the lubricant layer contains a fluoro containing compound. It is envisioned that the lubricant layer overlies a transparent magnetic layer. The total coating weight of the composite wax particle in the lubricant layer is in the range of from 1 to 300 mg/m2. Preferably, the fluoro compound contains at least one type of an ionic group or a nonionic group.
    Type: Grant
    Filed: December 28, 1998
    Date of Patent: January 16, 2001
    Assignee: Eastman Kodak Company
    Inventors: Janglin Chen, Yongcai Wang, Gregory W. Keyes, Richard A. Castle
  • Patent number: 6174659
    Abstract: The present invention is directed towards a method of forming a base for an imaging element, which includes providing a support, coating a composition which contains active-hydrogen containing polymers and tris(alkoxycarbonylamino)triazine on a side of the support, and drying the coating composition to form a layer. The present invention is also directed towards a method of forming an imaging element which comprises such a base, which includes the additional step of coating and drying an imaging layer on a side of the support. The invention is further directed towards bases and imaging elements comprising a layer on a side of a support comprising active-hydrogen containing polymers cross-linked with a tris(alkoxycarbonylamino)triazine. In accordance with the invention, a tris(alkoxycarbonylamino)triazine crosslinking agent is employed, which unlike traditional melamine resins, does not emit formaldehyde as a by-product of the crosslinking reaction.
    Type: Grant
    Filed: September 8, 1999
    Date of Patent: January 16, 2001
    Assignee: Eastman Kodak Company
    Inventors: Brian A. Schell, Charles C. Anderson
  • Patent number: 6171770
    Abstract: A method of fusing a protective layer on a photographic element by the steps of: providing a photographic element having a silver halide light-sensitive emulsion layer; applying a hydrophobic polymeric coating to the silver halide light sensitive emulsion layer; and fusing the hydrophobic polymeric coating to the silver halide light sensitive emulsion layer to form a protective overcoat, the fusing step comprising: passing the photographic element through a nip formed between a heated fuser belt and a roller wherein the fuser belt has an overcoat containing an optional siloxane intermediate layer and a silsesquioxane polymer surface layer coated on said intermediate layer.
    Type: Grant
    Filed: November 24, 1999
    Date of Patent: January 9, 2001
    Inventors: Jiann Chen, Biao Tan, Muhammed Aslam, Robert A. Lancaster
  • Patent number: 6172775
    Abstract: The present invention is a composition for removing scratches from photographic elements. The composition includes a solvent, an abrasive particle, a petroleum distillate, hard wax and water.
    Type: Grant
    Filed: December 8, 1998
    Date of Patent: January 9, 2001
    Assignee: Eastman Kodak Company
    Inventors: Yongcai Wang, Jeffrey A. Trest, Alfred B. Fant
  • Patent number: 6165602
    Abstract: A laminated polyester film stretched in at least one direction, comprising:a polyester support, andat least one enhanced adhesion layer laminated on the polyester support, comprising a composition comprising:(1) an aromatic copolyester (A1) having a water-dispersible functional group, a polyvinyl alcohol resin (B1), and a vinylpyrrolidone copolymer resin (C1); or(2) an aromatic copolyester (A1) having a water-dispersible functional group, a polyvinyl alcohol resin (B1), and a polyglycerol polyglycidyl ether (C2); or(3) an aqueous-type polyurethane (A3), a polyvinyl alcohol resin (B3), and inert particles wherein the thickness (L) of the adhesion layer and the average particle diameter (d) of said inert particles satisfies the equation1/3.ltoreq.d/L.ltoreq.3.
    Type: Grant
    Filed: June 11, 1998
    Date of Patent: December 26, 2000
    Assignee: Mitsubishi Polyester Film Corporation
    Inventor: Masato Fujita
  • Patent number: 6165707
    Abstract: An image-forming material comprising a support and a constituent layer(s) comprising at least (a) a thermographic image-forming layer containing a reducible silver salt, a reducing agent of the reducible silver salt and a binder or (b) a photothermographic image-forming layer containing a light-sensitive silver halide as a photocatalyst, reducible silver salt, a reducing agent of the reducible silver salt and a binder, wherein the image-forming material comprises a compound represented by formula (I-1) or (II-1) in at least one constituent layer: ##STR1## wherein R represents a secondary alkyl group or a cycloalkyl group; and M.sup.1 and M.sup.2 each represents a hydrogen atom, a metal ion or an ammonium ion; ##STR2## wherein R.sup.1 represents a secondary alkyl group, a cycloalkyl group, an aryl group, or a primary alkyl group substituted with a substituent bonded via a hetero atom; and M.sup.1 and M.sup.2 each represents a hydrogen atom, a metal ion or an ammonium ion.
    Type: Grant
    Filed: June 15, 1999
    Date of Patent: December 26, 2000
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Shigeo Hirano, Satoru Toda, Masahiko Taniguchi, Hiroyuki Suzuki
  • Patent number: 6165700
    Abstract: The invention relates to an imaging element comprising a photographic element comprising a base, at least one color forming layer comprising at least one silver halide emulsion layer, and one dye forming coupler, wherein said base comprises a transparent polymer sheet having laminated thereto a microvoided biaxially oriented polyolefin sheet and wherein said polymer sheet has an upper surface that has a roughness of between 0.3 and 2.0 .mu.m.
    Type: Grant
    Filed: December 21, 1998
    Date of Patent: December 26, 2000
    Assignee: Eastman Kodak Company
    Inventors: Alphonse D. Camp, Peter T. Aylward, Robert P. Bourdelais
  • Patent number: 6162597
    Abstract: A polyester support having an adjacent subbing layer which comprises a polymer or copolymer of glycidyl acrylate and/or glycidyl methacrylate improves the adhesion of a photothermographic imaging layer containing a poly(vinyl butyral) binder coated from an organic solvent. The subbing layer can be applied in the form of an aqueous dispersion in the prescence of a coalescing agent. Such a subbing layer does not adversely affect sensitometry in a photothermographic or thermographic element.
    Type: Grant
    Filed: December 17, 1999
    Date of Patent: December 19, 2000
    Assignee: Eastman Kodak Company
    Inventors: Charles L. Bauer, Cathy A. Fleischer
  • Patent number: 6162596
    Abstract: An imaging element comprising;a support;at least one image forming layer superposed on the support; and anelectrically-conductive layer superposed on the support; said electrically-conductive layer comprising a substituted or unsubstituted thiophene-containing electrically-conductive polymer and a cellulosic polymer binder. Such an electrically-conductive layer provides protection against the accumulation of static electrical charges before and after image processing and provides improved physical properties.
    Type: Grant
    Filed: August 30, 1999
    Date of Patent: December 19, 2000
    Assignee: Eastman Kodak Company
    Inventors: Dwight W. Schwark, Debasis Majumdar, Charles C. Anderson, Robert J. Kress
  • Patent number: 6156491
    Abstract: A heat-developable light-sensitive material comprising a support and at least one image-forming layer, and containing a light-insensitive silver salt, a light-sensitive silver halide and a binder, wherein the light-sensitive material comprises at least one image-forming layer which contains: a light-sensitive silver halide which has been spectrally sensitized to from 750 to 1,400 nm; and a binder comprising a polymer latex having a glass transition temperature of from -30.degree. C. to 40.degree. C.
    Type: Grant
    Filed: March 25, 1999
    Date of Patent: December 5, 2000
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Takahiro Goto
  • Patent number: 6153362
    Abstract: A photographic element containing a support; at least two contiguous layers, at least one of which is a silver halide emulsion layer superposed on a side of said support; a processing solution permeable protective overcoat containing a urethane-vinyl copolymer having acid functionalities wherein a weight ratio of a urethane component in the copolymer comprises from 20 to 100 percent and a weight ratio of a vinyl component in the copolymer comprises from 0 to 80 percent; a crosslinker for the said copolymer; and a second polymer selected from the group consisting of polyvinyl alcohol, cellulose ethers, n-vinyl amides, polyesters, poly(ethylene oxide), starch, proteins, whey, albumin, poly(acrylic acid), alginates and gums overlying the said at least two contiguous layers; and wherein the ratio of the gelatin to non-gelatin content of the dried layers immediately underlying the uppermost gelatin layer is less than 1.
    Type: Grant
    Filed: May 14, 1999
    Date of Patent: November 28, 2000
    Assignee: Eastman Kodak Company
    Inventors: Mridula Nair, Lloyd A. Lobo, Tamara K. Jones
  • Patent number: 6153363
    Abstract: The present invention is a photographic element which includes a support, at least one silver-halide emulsion layer superposed on the support and a processing-solution-permeable protective overcoat overlying the silver halide emulsion layer. The processing-solution-permeable overcoat is composed of a polyurethane-containing component having acid functionalities wherein the polyurethane-containing component is an interpenetrating network further comprising at least two polymers, including at least one vinyl polymer and at least one urethane polymer. Suitably, a water-soluble polymer is also present in the overcoat. The present invention is also directed to a method of making a photographic print involving developing the photographic element in an alkaline developer solution.
    Type: Grant
    Filed: November 23, 1999
    Date of Patent: November 28, 2000
    Assignee: Eastman Kodak Company
    Inventors: Mridula Nair, Tamara K. Jones, Lloyd A. Lobo, Brian A. Schell
  • Patent number: 6150084
    Abstract: In a photothermographic element comprising a non-photosensitive silver salt, a photosensitive silver halide, and a binder on a support, a latex of a polymer having a Tg of -30.degree. C. to 40.degree. C. constitutes at least 50% by weight of the binder in an image forming layer containing the silver halide, and the image forming layer or a layer disposed adjacent thereto or both contain a nucleating agent and a diphosphorus pentoxide-derived compound. The element produces a low fog, high contrast image.
    Type: Grant
    Filed: March 17, 1999
    Date of Patent: November 21, 2000
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Tadashi Ito, Makoto Ishihara
  • Patent number: 6146823
    Abstract: An acetylene compound is used in a thermographic image-recording element comprising on a support an image-recording layer containing a non-photosensitive organic silver salt, a reducing agent therefor, and a thermoplastic polymer binder. The element can be heat developed at lower temperatures.
    Type: Grant
    Filed: March 19, 1999
    Date of Patent: November 14, 2000
    Assignee: Fuji Photo Film Co., LTD
    Inventor: Kazunobu Katoh
  • Patent number: 6146822
    Abstract: Thermographic or photothermographic image recording elements comprising (a) a reducible silver salt, (b) a reducing agent, (c) a binder, (d) a specific phthalazine derivative and (e) an organic acid compound experience a minimized drop of image density when stored under warm humid conditions.
    Type: Grant
    Filed: June 5, 1998
    Date of Patent: November 14, 2000
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Naoki Asanuma, Tatsuya Ishizaka, Hisashi Okamura
  • Patent number: 6143487
    Abstract: Vinyl sulfone and/or .beta.-halo sulfone compounds have been found to improve fog stability on shelf aging of photothermographic imaging elements. These elements comprise a photosensitive silver halide, silver salt oxidizing agent and reducing agent for silver ion in a binder.
    Type: Grant
    Filed: November 30, 1992
    Date of Patent: November 7, 2000
    Assignee: Eastman Kodak Company
    Inventors: James B. Philip, Ivan H. Skoog, Gary L. Featherstone, Thomas J. Kub
  • Patent number: 6143488
    Abstract: A process for producing a photothermographic recording material having a support and a photo-addressable thermally developable element containing photosensitive silver halide in catalytic association with a substantially light-insensitive silver salt of an organic carboxylic acid, an organic reducing agent for the substantially light-insensitive silver salt of an organic carboxylic acid in thermal working relationship therewith and a binder including a water-soluble binder, a water-dispersible binder or a mixture of a water-soluble binder and a water-dispersible binder, comprising the steps of: (i) producing an aqueous dispersion or aqueous dispersions containing photosensitive silver halide, a substantially light-insensitive silver salt of an organic carboxylic acid, an organic reducing agent for the substantially light-insensitive silver salt of an organic carboxylic acid and a binder including a water-soluble binder, a water-dispersible binder or a mixture of a water-soluble binder and a water-dispersible
    Type: Grant
    Filed: December 29, 1997
    Date of Patent: November 7, 2000
    Assignee: Agfa-Gevaert
    Inventors: Herman Uytterhoeven, Johan Loccufier
  • Patent number: 6143481
    Abstract: A photothermographic recording material comprising a support and a photo-addressable thermally developable element comprising photosensitive siver halide in catalytic association with a substantially light-insensitive silver salt of an organic carboxylic acid, an organic reducing agent for the substantially light-insensitive silver salt of an aliphatic carboxylic acid in thermal working relationship therewith and a binder, characterized in that the binder comprises a non-proteinaceous water-soluble binder, a non-proteinaceous water-dispersible binder (preferably a comprising a diene, styrene, an acrylate or a methacrylate monomer) or a mixture of a non-proteinaceous water soluble binder and a non-proteinaceous water-dispersible binder and the photo-addressable thermally developable element is capable of being coated from an aqueous medium and is capable of producing images stable to light without a wet-processing step; a process for producing the photothermographic recording material and a photo-thermographic
    Type: Grant
    Filed: January 20, 1998
    Date of Patent: November 7, 2000
    Assignee: Agfa-Gevaert
    Inventors: Herman Uytterhoeven, Yvan Gilliams
  • Patent number: 6140038
    Abstract: A heat-developable image-recording material comprising, on a support, at least one image-forming layer containing an organic silver salt, a reducing agent, and a light-sensitive silver halide, and at least one protective layer provided on the image-forming layer, wherein the image-forming layer and the protective layer contain a polymer latex as a binder, and the polymer latex of the image-forming layer and/or the protective layer comprises a self-crosslinkable polymer latex.
    Type: Grant
    Filed: July 9, 1999
    Date of Patent: October 31, 2000
    Assignee: Fuji Photo Film Co., LTD
    Inventors: Takahiro Ishizuka, Kunio Ishigaki
  • Patent number: 6140037
    Abstract: A photothermographic material exhibiting satisfactory photographic properties can be prepared using an aqueous dispersion of components. A photosensitive layer is formed by dispersing a binder and silver halide in an aqueous solvent containing at least 30 wt % of water to form an aqueous dispersion, coating the aqueous dispersion onto a support, and drying the coating. The binder is a polymer having an equilibrium moisture content of 0.1-2 wt % at 25.degree. C. and RH 60% or a thermoplastic resin. The binder is preferably based on a styrene-butadiene copolymer. Fog is suppressed even when the material is stored in a humid atmosphere.
    Type: Grant
    Filed: April 17, 1997
    Date of Patent: October 31, 2000
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Kazunobu Katoh, Akira Hatakeyama
  • Patent number: 6132949
    Abstract: The invention provides a photothermographic material comprising a photosensitive silver halide, an organic silver salt, a reducing agent, and a binder on a support. A layer containing the organic silver salt has been formed by using a solid particle dispersion of the organic silver salt and a polymer latex as a main binder, preparing a coating solution of the salt and the binder in an aqueous solvent, and coating the solution, followed by drying. Coating operation is easy, and coating surface quality and photographic properties are improved.
    Type: Grant
    Filed: December 22, 1997
    Date of Patent: October 17, 2000
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Munehisa Fujita, Tatsuya Ishizaka, Akira Hatakeyama, Hisashi Okada, Naoki Asanuma
  • Patent number: 6132950
    Abstract: In a thermographic image-recording element comprising an image-forming layer and a protective layer on one side of a support, and optionally a back layer on the opposite side of the support, a polymer latex is used as a binder in each of the image-forming layer, the protective layer, and the back layer. The element experiences a minimized dimensional change before and after heat development. No wrinkling occurs upon heat development.
    Type: Grant
    Filed: September 4, 1998
    Date of Patent: October 17, 2000
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Kunio Ishigaki, Takashi Naoi
  • Patent number: 6132948
    Abstract: A photothermographic material has a photosensitive layer containing a photosensitive silver halide, a binder, an organic silver salt and a reducing agent therefor on one surface of a support. An undercoat layer containing a styrene-butadiene copolymer is interleaved between the support and the photosensitive layer for improving the adhesion therebetween. The photosensitive layer is formed by applying an aqueous coating solution of the binder mainly composed of a polymer having an equilibrium moisture content of up to 2% by weight at 25.degree. C. and RH 60% and drying the coating.
    Type: Grant
    Filed: December 19, 1997
    Date of Patent: October 17, 2000
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Akira Hatakeyama
  • Patent number: 6130030
    Abstract: The present invention is a photographic element having a support, at least one silver halide emulsion layer superposed on the support, at least one electrically conductive layer superposed on the support and a protective overcoat superposed on the support. The electrically conductive layer is composed of an electrically conductive agent and a binder. The protective overcoat includes a polyurethane having a tensile elongation to break of at least 50% and a Young's modulus measured at 2% elongation of at least 50,000 lb/in.sup.2 and an interpolymer comprising repeating units of A and B wherein A comprises a fluorine containing acrylate or a fluorine containing methacrylate monomer and B comprises an ethylenically unsaturated monomer containing hydratable groups.
    Type: Grant
    Filed: March 23, 1999
    Date of Patent: October 10, 2000
    Assignee: Eastman Kodak Company
    Inventors: Charles C. Anderson, Brian A. Schell
  • Patent number: 6124042
    Abstract: A polyester film which has the in-plane rate of dimensional change of more than 0.02%, but not more than 0.05%, when the film is kept for 72 hours under the conditions of temperature 60.degree. C. and relative humidity 80%, and the average value of the in-plane rate of dimensional change of from -0.07% to 0.03% and the in-plane anisotropy of the in-plane rate of dimensional change of from 0% to 0.08%, when the film is kept for 30 minutes at a temperature of 105.degree. C. This polyester film is low in heat shrinkage and excellent in thermal dimensional stability. A heat-development, photographic light-sensitive material using the polyester film is low in heat shrinkage and excellent in thermal dimensional stability.
    Type: Grant
    Filed: February 4, 1999
    Date of Patent: September 26, 2000
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Kiyokazu Hashimoto
  • Patent number: 6124083
    Abstract: The present invention is an imaging element which includes a support, an image-forming layer superposed on the support and an electrically-conductive layer superposed on the support. The electrically-conductive layer is composed of a sulfonated polyurethane film-forming binder and an electrically-conductive polymer.
    Type: Grant
    Filed: October 15, 1998
    Date of Patent: September 26, 2000
    Assignee: Eastman Kodak Company
    Inventors: Debasis Majumdar, Dennis J. Eichorst, Charles C. Anderson, Dennis J. Savage
  • Patent number: 6117628
    Abstract: The present invention is an imaging element including, a support, at least one image-forming layer, and a transparent, electrically-conductive layer. The transparent, electrically-conductive layer includes conductive metal-containing fine particles dispersed in a polyurethane film-forming binder and a crosslinking agent. The polyurethane film-forming binder has a tensile elongation to break of at least 50% and a Young's modulus at a 2% elongation of a least 50,000 lb/in.sup.2.
    Type: Grant
    Filed: February 27, 1998
    Date of Patent: September 12, 2000
    Assignee: Eastman Kodak Company
    Inventors: Dennis J. Eichorst, Paul A. Christian
  • Patent number: 6110659
    Abstract: A thermographic recording element has a polyester-containing undercoat layer on a support and a thermographic recording layer, typically a photosensitive layer, on the undercoat layer. The undercoat layer enhances the adhesion between the support and the recording layer.
    Type: Grant
    Filed: August 28, 1998
    Date of Patent: August 29, 2000
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Akira Hatakeyama, Hiroshi Haraoka
  • Patent number: 6107015
    Abstract: The present invention is a photographic element having a support, at least one silver halide emulsion layer superposed on a first side of the support and a protective overcoat superposed on a second said of the support. The protective overcoat includes a polyurethane having a tensile elongation to break of at least 50% and a Young's modulus measured at 2% elongation of at least 50,000 lb/in.sup.2, an interpolymer composed of repeating units of A and B wherein A comprises a fluorine containing acrylate or a fluorine containing methacrylate monomer and B comprises an ethylenically unsaturated monomer containing hydratable groups and an electrically conductive agent.
    Type: Grant
    Filed: March 23, 1999
    Date of Patent: August 22, 2000
    Assignee: Eastman Kodak Company
    Inventors: Charles C. Anderson, Brian A. Schell, Mario D. DeLaura
  • Patent number: 6100022
    Abstract: In a photothermographic element comprising a non-photosensitive silver salt, a photosensitive silver halide, and a binder on a support, a latex of a polymer having a Tg of -30.degree. C. to 40.degree. C. constitutes at least 50% by weight of the binder in an image forming layer containing the silver halide, and the image forming layer or a layer disposed adjacent thereto or both contain a nucleating agent. The element on the image forming layer side has a film surface pH of 5.0-7.0. The element produces a low fog, ultrahigh contrast image and maintains ultrahigh contrast characteristics with a wide latitude under varying development conditions.
    Type: Grant
    Filed: March 17, 1999
    Date of Patent: August 8, 2000
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Nobuaki Inoue, Takahiro Goto
  • Patent number: 6096491
    Abstract: The present invention is an imaging element which includes a support, an image-forming layer superposed on the support, an electrically-conductive layer superposed on the support and a protective topcoat overlying the electrically-conductive layer. The electrically-conductive layer contains an electrically-conductive polymer and has a water electrode resistivity (WER) value that is substantially unchanged upon subjecting of the imaging element to color photographic processing. The protective topcoat is composed of a polyurethane film-forming binder having a tensile elongation to break of at least 50% and a Young's modulus measured at 2% elongation of at least 50000 psi.
    Type: Grant
    Filed: October 15, 1998
    Date of Patent: August 1, 2000
    Assignee: Eastman Kodak Company
    Inventors: Debasis Majumdar, Dennis J. Eichorst, Kenneth L. Tingler
  • Patent number: 6096492
    Abstract: A colour photographic material which contains an OH-functional polylactone in at least one layer is distinguished by improved maximum densities.
    Type: Grant
    Filed: November 4, 1998
    Date of Patent: August 1, 2000
    Assignee: Agfa-Gevaert NV
    Inventors: Beate Weber, Markus Geiger, Jorg Hagemann
  • Patent number: 6093529
    Abstract: An imaging material is provided in the form of a photothermographic or thermographic image forming layer containing an organic silver salt on one surface of a support and further comprising a polyvalent metal ion and a phthalic acid compound on the image forming layer-bearing surface of the support. The imaging material has improved shelf stability before and after image formation and the ease of handling and produces high-quality blue black tone images.
    Type: Grant
    Filed: April 16, 1998
    Date of Patent: July 25, 2000
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Hirohiko Tsuzuki, Hisashi Okamura, Itsuo Fujiwara, Yoshiharu Yabuki, Masaki Noro
  • Patent number: 6087083
    Abstract: A colour photographic material in which a package of layers is provided which consists, in the stated sequence, of (a) a silver halide-free layer containing colour coupler, (b) a layer containing silver halide and (c) a silver halide-free layer containing colour coupler, wherein at least one of layers (a) and (c) consists to an extent of at least 20 vol. % of a synthetic polymer, is distinguished by an improved grain/sensitivity ratio.
    Type: Grant
    Filed: November 3, 1998
    Date of Patent: July 11, 2000
    Assignee: Asfa-Gevaert N.V.
    Inventors: Peter Bell, Ralf Buscher, Lothar Endres, Lothar Rosenhahn, Rainer Scheerer, Lydia Simon, Thomas Stetzer
  • Patent number: 6087081
    Abstract: Latex polymer of fine particles having a heterogeneous phase structure which comprises a core of a polymer having repeating units derived from a conjugated diene monomer and a shell of a polymer having repeating units derived from at least one ethylenically unsaturated monomer carrying an active methylene group; a silver halide photographic light-sensitive material comprises a core/shell latex polymer whose shell consists of a polymer having repeating units of an ethylenically unsaturated monomer represented by the formula: CH.sub.2 .dbd.C(R.sup.1)--L--X (wherein R.sup.
    Type: Grant
    Filed: December 15, 1999
    Date of Patent: July 11, 2000
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Junichi Yamanouchi, Hidetoshi Watanabe, Kunio Ishigaki, Seiichi Yamamoto, Kouta Fukui
  • Patent number: 6087051
    Abstract: An information recording material having thereon an image carrier layer composed of a hydrophilic polymer and a protective covering layer. The protective covering layer contains an aqueous polyurethane resin or an aqueous polyacryl resin. An information recording material which is excellent in terms of water resistance, anti-scratch property, glossiness, image storage stability and resistance to fingerprints is obtained.
    Type: Grant
    Filed: July 8, 1997
    Date of Patent: July 11, 2000
    Assignee: Konica Corporation
    Inventors: Takehiko Shoji, Yoshihiko Suda, Noriyuki Kokeguchi, Shin-ichi Suzuki
  • Patent number: 6087086
    Abstract: A thermographic recording element having at least one image forming layer contains an organic silver salt, a reducing agent, and a ballast group-bearing alkene compound. The element has high Dmax, high sensitivity, satisfactory contrast and minimized black pepper.
    Type: Grant
    Filed: September 30, 1998
    Date of Patent: July 11, 2000
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Hiroyuki Suzuki, Toshihide Ezoe, Kohzaburoh Yamada