And Inorganic Silver Compound Patents (Class 430/619)
  • Patent number: 7115358
    Abstract: The present invention provides a black and white photothermographic material having, on at least one side of a support, an image forming layer containing at least a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent for silver ions, and a binder, as well as an image forming method. The black and white photothermographic material is characterized in that 1) the non-photosensitive organic silver salt includes at least one compound selected from the group consisting of a silver salt of an azole compound and a silver salt of a mercapto compound, and 2) the photosensitive silver halide has a spectral sensitizing dye in the form of a multilayer adsorbed on its surface. According to the invention, an improved black and white photothermographic material and image forming method realizing high sensitivity, favorable gradation, and less dependence on developing process conditions are provided.
    Type: Grant
    Filed: May 20, 2005
    Date of Patent: October 3, 2006
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Takeshi Funakubo, Takeshi Suzumoto
  • 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: 7112401
    Abstract: A photothermographic material comprising a support body provided on or above at least one surface thereof with an image forming layer, containing at least a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent and binder, and a non-photosensitive layer, wherein: 1) 50% or more of the binder in the image forming layer is hydrophilic binder; 2) a ratio of the non-photosensitive organic silver salt to the hydrophilic binder is from 0.6 to 1.4 by mass; and 3) 70% or more of binder in the non-photosensitive layer is hydrophilic binder.
    Type: Grant
    Filed: September 8, 2005
    Date of Patent: September 26, 2006
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Hajime Nakagawa
  • Patent number: 7112402
    Abstract: A photothermographic material of the present invention contains a slipping agent. One slipping agent is a liquid at a ordinary temperature, and an volatile rate of the slipping agent at 120° C. for one hour is 0.5% by mass or less as measured by a thermo-balance. The other slipping agent is that a permeating rate to the transportation rollers, when the transportation rollers are immersed in the slipping agent at 120° C. for 2 hours, is 6% by mass or less.
    Type: Grant
    Filed: January 12, 2004
    Date of Patent: September 26, 2006
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Yasuhiro Yoshioka, Yoshihisa Tsukada, Takayoshi Oyamada, Minoru Sakai
  • Patent number: 7108965
    Abstract: A photothermographic material for blue light exposure that has a good coating surface condition and an image forming method for use with the photothermographic material are provided. The photothermographic material includes a support, and an image forming layer provided on at least one side of the support. The image forming layer contains at least a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent and a binder. The photothermographic material is characterized in that: (1) a silver iodide content of the photosensitive silver halide is not less than 40 mole %; (2) the binder is a hydrophilic binder; (3) the image forming layer contains a silver iodide complexing agent; and (4) the image forming layer contains, as a silver carrier, at least one compound represented by the following Formula (I) or (II): (wherein Q represents an atomic group that is necessary to form a 5 or 6-membered imide ring).
    Type: Grant
    Filed: September 12, 2005
    Date of Patent: September 19, 2006
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Takayoshi Mori, Kazutaka Takahashi
  • Patent number: 7105283
    Abstract: The present invention provides a black and white photothermographic material having, on at least one surface of a support, an image forming layer containing at least a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent for silver ions, and a binder, wherein 70% or more of a total projected area of the photosensitive silver halide is occupied by tabular grains having an aspect ratio of 2.5 or more, a mean projected area equivalent diameter of 0.5 ?m to 8 ?m, and a mean grain thickness of 0.02 ?m to 0.2 ?m, and a ratio of a number of sites capable of forming a development initiation point on a corner portion or a fringe portion of the photosensitive silver halide grain to all development initiation points is 50% or more. Also disclosed is an image forming method of forming a radiation image by using a fluorescent intensifying screen.
    Type: Grant
    Filed: December 10, 2004
    Date of Patent: September 12, 2006
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Tomoyuki Ohzeki
  • Patent number: 7105288
    Abstract: A photothermographic material is disclosed, comprising on a support a light-sensitive emulsion containing a light-insensitive organic silver salt and a light-sensitive silver halide, a reducing agent for silver ions and a binder, wherein the photothermographic material further comprises a compound represented by the following formula (A-1) or (B) and a compound represented by the following formula (A-2)
    Type: Grant
    Filed: August 13, 2003
    Date of Patent: September 12, 2006
    Assignee: Konica Corporation
    Inventors: Kiyokazu Morita, Ayumu Nishijima
  • Patent number: 7105282
    Abstract: An image forming method using a photothermographic material a photosensitive silver halide, a reducing agent, a binder and a non-photosensitive organic silver salt, wherein: the photothermographic material is discharged from a thermal developing device within 35 seconds after heating for thermal development is ceased.
    Type: Grant
    Filed: August 21, 2003
    Date of Patent: September 12, 2006
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Katsutoshi Yamane, Sumito Yamada, Eiichi Okutsu, Tomoyuki Ohzeki, Yutaka Oka
  • Patent number: 7097962
    Abstract: A photothermographic imaging material containing a support having thereon light-insensitive organic silver salt grains, photosensitive silver halide grains, a reducing agent for silver ions and a binder, wherein, (i) each of the organic silver salt grains has a structure having different silver ion dissociation constants at a surface portion and at an inner portion of the grain; (ii) each of the silver halide grains produces a larger number of latent images in a surface portion than in an inner portion of the grain by exposure to light; (iii) each of the silver halide grains produces a larger number of latent images in the inner portion than in the surface portion of the grain after being subjected to a thermal development; and (iv) a surface photographic speed of each of the silver halide grains decreases after being subjected to the thermal development.
    Type: Grant
    Filed: October 19, 2004
    Date of Patent: August 29, 2006
    Assignee: Konica Minoltn Medical & Graphic, Inc.
    Inventors: Hideki Komatsu, Hideki Takiguchi
  • Patent number: 7097963
    Abstract: Black-and-white, aqueous-based, silver halide-containing photothermographic materials have increased stability after imaging with the incorporation of at least 0.0002 mol/m2 of a halogen-substituted tetraazaindene compound.
    Type: Grant
    Filed: April 18, 2005
    Date of Patent: August 29, 2006
    Assignee: Eastman Kodak Company
    Inventors: Chaofeng Zou, Kumars Sakizadeh, George J. Burgmaier, Roger L. Klaus
  • Patent number: 7094524
    Abstract: Thermally developable photothermographic materials comprise a backside layer that includes a backside stabilizer to reduce fog formation in high humidity conditions, thereby providing improved shelf stability. Useful backside stabilizers include an amine organic base whose conjugate acid has a pKa greater than 5. These backside stabilizers can be provided particularly in non-photosensitive compositions that include an antihalation composition.
    Type: Grant
    Filed: October 15, 2003
    Date of Patent: August 22, 2006
    Assignee: Eastman Kodak Company
    Inventors: Steven H. Kong, Kumars Sakizadeh, William D. Ramsden
  • Patent number: 7094526
    Abstract: A photothermographic imaging material containing a support having thereon photosensitive silver halide grains, light-insensitive organic silver salt grains, a reducing agent for silver ions and polymer, wherein and average particle size of the photosensitive silver halide grains is 0.005 to 0.1 ?m, and the polymer dissolves both in water and in an organic solvent.
    Type: Grant
    Filed: October 28, 2004
    Date of Patent: August 22, 2006
    Assignee: Konica Minolta Medical & Graphic, Inc
    Inventors: Hiroaki Ando, Kazuhito Ihara, Shinichi Karakata, Kazuyoshi Shioiri
  • Patent number: 7087367
    Abstract: A photothermographic material is disclosed, comprising on a support a light-sensitive layer comprising a light-insensitive silver salt of an aliphatic carboxylic acid, light-sensitive silver halide grains, a reducing agent for silver ions and a binder, wherein the light-sensitive layer further comprises nonaqueous dispersion particles insoluble in organic solvents.
    Type: Grant
    Filed: January 20, 2005
    Date of Patent: August 8, 2006
    Assignee: Konica Minolta Medical & Graphic, INC
    Inventors: Takayuki Sasaki, Akihisa Nakajima, Kiyokazu Morita
  • Patent number: 7087368
    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: October 31, 2005
    Date of Patent: August 8, 2006
    Assignee: Konica Minolta Holdings, Inc.
    Inventors: Hiroshi Kashiwagi, Narito Goto
  • Patent number: 7087366
    Abstract: A photothermographic emulsion is prepared by chemically sensitizing silver halide grains formed by oxidative decomposition of a diphenylphosphine sulfide compound on or around the silver halide grains. This procedure uses a unique sequence of steps and provides increased photographic speed and manufacturing reproducibility.
    Type: Grant
    Filed: December 9, 2003
    Date of Patent: August 8, 2006
    Assignee: Eastman Kodak Company
    Inventors: Lilia P. Burleva, Kumars Sakizadeh, David R. Whitcomb, Sharon M. Simpson
  • Patent number: 7083908
    Abstract: A photothermographic material including a substrate carrying on one surface thereof an image forming layer containing at least a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent for a silver ion, and a binder, wherein the photosensitive silver halide has a silver iodide content of 40 to 100 mol %, and an average particle size of 5 to 80 nm, and the photothermographic material contains a compound of the following general formula (1); Q-(Y)n—C(Z1)(Z2)X??General formula (1) wherein Q represents a heterocycle, Y represents a divalent connecting group, n represents 0 or 1, Z1 and Z1 each represent a halogen atom, and X represents a hydrogen atom or an electron withdrawing group.
    Type: Grant
    Filed: April 14, 2003
    Date of Patent: August 1, 2006
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Seiichi Yamamoto, Eiichi Okutsu, Tomoyuki Ohzeki
  • Patent number: 7067242
    Abstract: Backside conductive layers with increased conductive efficiency can be provided for thermally developable materials by formulating hydrophilic metal oxide clusters in a hydrophobic environment using low shear mixing conditions. The dry thickness and coating weight of the conductive layer are thereby reduced.
    Type: Grant
    Filed: October 29, 2004
    Date of Patent: June 27, 2006
    Assignee: Eastman Kodak Company
    Inventors: Thomas J. Ludemann, Gary E. LaBelle, Roland J. Koestner, Samuel Chen
  • Patent number: 7067243
    Abstract: A process for preparing a photothermographic material with increased photosensitivity, the photothermographic material comprising a support and a photo-addressable thermally developable element, exclusive of a compound R—S(M)n wherein R is an aliphatic hydrocarbon, aryl or heterocyclic group, M is a hydrogen atom, or cation, and letter n is a number determined so as to render the molecule neutral and also exclusive of a compound capable of releasing a mobile dye corresponding to or inversely corresponding to the reduction of silver halide to silver at elevated temperatures, the photo-addressable thermally developable element containing a photosensitive agent in catalytic association with a light-insensitive organic silver salt, a reducing agent for the light-insensitive organic silver salt in thermal working relationship therewith and a binder, comprising the steps of: (i) increasing the photosensitivity of a photosensitive silver halide by chemical sensitisation with a chemical sensitising merocyanine dye co
    Type: Grant
    Filed: March 7, 2003
    Date of Patent: June 27, 2006
    Assignee: Agfa Gevaert
    Inventors: Herman Uytterhoeven, Paul Callant
  • Patent number: 7060423
    Abstract: The heat-developable photosensitive material of the present invention comprises a support, a photosensitive silver halide, a non-photosensitive organic silver salt, a heat developer and a binder, wherein the photosensitive silver halide is a specific photosensitive silver halide.
    Type: Grant
    Filed: July 10, 2002
    Date of Patent: June 13, 2006
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Katsutoshi Yamane, Yasuhiko Goto
  • Patent number: 7056651
    Abstract: Thermally developable materials for thermography or photothermography have imaging layers on one or both sides of the support. Buried conductive underlayers are disposed under these imaging layers on one or both sides of the support, and these conductive underlayers include conductive metal oxide(s) and optionally a smectite clay or lithium salt.
    Type: Grant
    Filed: April 18, 2005
    Date of Patent: June 6, 2006
    Assignee: Eastman Kodak Company
    Inventors: Sharon M. Simpson, Jon A. Hammerschmidt, Kumars Sakizadeh
  • Patent number: 7056650
    Abstract: Thermally developable imaging materials have an outermost protective layer that is composed of one or more hydrophilic film-forming components. The predominant film-forming component is a positively-charged latex polymer that has cationic groups. The charged latex polymer is present as latex particles that have prepared in the presence of a non-ionic or cationic stabilizer in an amount of at least 0.5% (by weight) that has an HLB value of 7 to 20. The nonionic or cationic stabilizer becomes associated with the latex polymer particles. Both thermographic and photothermographic materials can be prepared with such protective layers.
    Type: Grant
    Filed: September 7, 2004
    Date of Patent: June 6, 2006
    Assignee: Eastman Kodak Company
    Inventors: Jon A. Hammerschmidt, Jeffrey W. Leon
  • Patent number: 7056652
    Abstract: A silver salt photothermographic material is disclosed, comprising on a support a light-insensitive silver salt of an aliphatic carboxylic agent, light-sensitive silver halide grains, a reducing agent for silver ions and a binding agent, wherein the silver halide grains are those which are capable being converted from a surface latent image formation type to internal latent image formation type upon thermal development, and the photothermographic material further comprises a dye microcapsule dispersion or a dye compound containing at least two chromophores.
    Type: Grant
    Filed: October 22, 2004
    Date of Patent: June 6, 2006
    Assignee: Konica Minolta Medical & Graphic, Inc.
    Inventor: Hiroshi Kashiwagi
  • Patent number: 7052828
    Abstract: The present invention provides a photothermographic material including at least a photosensitive silver halide, a non-photosensitive silver-supplying compound, a reducing agent and a binder on at least one surface of a support. The photothermographic material further includes at least one kind of halogen releasing compound having a water-solubilizing group and at least one kind of halogen releasing compound having no water-solubilizing group, and a gradation of a characteristic curve is 2.5 to 4.0. The photothermographic material of the invention is excellent in storability, and particularly excellent in storability of high quality images used for image recording for medical diagnosis.
    Type: Grant
    Filed: September 14, 2004
    Date of Patent: May 30, 2006
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Yasuhiro Yoshioka
  • Patent number: 7052819
    Abstract: The addition of certain aliphatic and non-aromatic carbocyclic polycarboxylic acids provides an improvement in natural age keeping properties of organic-solvent based photothermographic materials. This improvement is particularly useful in organic-based photothermographic materials containing phosphors in the photothermographic emulsion layer. Phosphor-containing materials can be particularly useful for direct radiographic imaging using X-radiation.
    Type: Grant
    Filed: April 16, 2004
    Date of Patent: May 30, 2006
    Assignee: Eastman Kodak Company
    Inventor: Sharon Mary Simpson
  • Patent number: 7049054
    Abstract: Thermally developable imaging materials have an outermost protective layer that is composed of one or more hydrophilic film-forming components. Between the outermost protective layer and the underlying thermally developable imaging layers is an interlayer containing a film-forming ionic latex polymer other than a carboxy-containing latex polymer. This ionic polymer can be negatively-charged or positively-charged. The ionic latex polymer is present as latex particles that have been prepared in the presence of a stabilizer in an amount of at least 0.5% (by weight) that has an HLB value of 7 to 20. The stabilizer becomes associated with the latex polymer particles. Both thermographic and photothermographic materials can be prepared with such protective layers.
    Type: Grant
    Filed: September 7, 2004
    Date of Patent: May 23, 2006
    Assignee: Eastman Kodak Company
    Inventors: Jon A. Hammerschmidt, Jeffrey W. Leon
  • Patent number: 7049056
    Abstract: A method for wrapping a heat-developable photosensitive material, which comprises bending a wrapping material so that the wrapping material can bring into direct contact with at least a part of a heat-developable photosensitive material comprising a photosensitive silver halide, a reducing agent, a binder and a non-photosensitive organic silver salt having a silver behenate content of not lower than 53 mol % provided on one side of a support, wherein the wrapping material is a paper.
    Type: Grant
    Filed: February 6, 2003
    Date of Patent: May 23, 2006
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Takayoshi Oyamada, Yasuhiro Yoshioka, Eiichi Okutsu
  • Patent number: 7026109
    Abstract: The present invention provides a photothermographic material, comprising a photosensitive silver halide, a non-photosensitive organic solvent salt, a reducing agent for a silver ion, and a binder on one face of a support, for being applied by using an organic solvent, the photothermographic material further comprising at least one compound selected from the group of compounds consisting of: a compound represented by the following general formula (1), a compound having a ?-lactam ring, a compound having a group that is adsorptive to a silver halide and a group that reduces a silver halide and a precursor thereof:
    Type: Grant
    Filed: August 4, 2003
    Date of Patent: April 11, 2006
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Tomoyuki Ohzeki, Hiroyuki Mifune, Tadashi Inaba, Kohzaburoh Yamada, Katsuyuki Watanabe
  • Patent number: 7026104
    Abstract: A heat-developable photosensitive material comprising on a support light-sensitive silver halide, a light-insensitive organic silver salt, a reducing agent and a binder, wherein at least 30 mole % of the total light-sensitive silver halide is silver halide of high silver iodide content having an average ?-phase proportion of from 5 to 70 mole %, and a method of forming images on the heat-developable photosensitive material with a semiconductor laser.
    Type: Grant
    Filed: February 27, 2003
    Date of Patent: April 11, 2006
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Fumito Nariyuki
  • Patent number: 7022470
    Abstract: A photothermographic imaging material having high sensitivity and superior temporal storage stability. The photothermographic imaging material includes silver halide on at least one side of a support, and includes at least one kind of the compounds represented by the following general formula (1).
    Type: Grant
    Filed: March 24, 2004
    Date of Patent: April 4, 2006
    Assignee: Konica Minolta Medical & Graphic, Inc.
    Inventors: Kiyoshi Fukusaka, Kazuaki Nakamura, Ryouhei Iwamoto, Norio Miura, Nobuaki Kagawa, Soc Man Ho Kimura
  • Patent number: 7022471
    Abstract: An organic silver salt dispersion containing: light-insensitive organic silver salt grains; photosensitive silver halide grains; a solvent; and a binder for dispersion, wherein the organic silver salt is prepared by using: (i) an alkaline metal salt of an organic acid other than a sodium salt; and (ii) a water soluble silver compound, and the binder is a polyvinyl acetal resin having a polymerization degree of 250 to 1000 and prepared by acetal forming reaction of a polyvinylalcohol with an aldehyde.
    Type: Grant
    Filed: August 19, 2004
    Date of Patent: April 4, 2006
    Assignee: Konica Minolta Medical & Graphic Inc.
    Inventor: Kenji Ohnuma
  • Patent number: 7022467
    Abstract: Backside conductive layers with increased conductive efficiency can be provided for thermally developable materials by providing a buried conductive coating containing a lower molecular weight polyvinyl acetal binder (that is, a molecular weight of at least 8,000 and less than 30,000).
    Type: Grant
    Filed: November 30, 2004
    Date of Patent: April 4, 2006
    Assignee: Eastman Kodak Company
    Inventors: Thomas J. Ludemann, Roland J. Koestner, Gary E. LaBelle, Darlene F. Philip
  • Patent number: 7018787
    Abstract: Thermally developable materials such as photothermographic and thermographic materials have a backside conductive layer with increased conductive efficiency. This backside conductive layer is a buried conductive coating and is overcoated with a layer that contains a smectite clay modified with a quaternary ammonium compound.
    Type: Grant
    Filed: November 30, 2004
    Date of Patent: March 28, 2006
    Assignee: Eastman Kodak Company
    Inventors: Thomas J. Ludemann, Gary E. LaBelle, Darlene F. Philip, Thomas C. Geisler
  • 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: 7018786
    Abstract: A black and white monosheet thermographic recording material comprising a support and a thermosensitive element, the thermosensitive element containing a substantially light-insensitive organic silver salt, an organic reducing agent therefor in thermal working relationship therewith, a binder and at least one toning agent, wherein the at least one toning agent is represented by formula (I): wherein R1 is a hydrogen atom or an alkyl, an alkenyl, an alkynyl, a cycloalkyl, an alkaryl, an aryl, a heterocyclic or a heteroaryl group all of which may be optionally substituted; with the proviso that R1 may not be a hydrogen atom if both R2 and R3 are both hydrogen atoms; R2 and R3 are independently a hydrogen or a halogen atom or an amino, amide, ester, carboxy, carbonate, alkyl, alkenyl, alkynyl, cycloalkyl, alkaryl, aryl, heterocyclic or heteroaryl group all of which may be optionally substituted; R2 and R3 may together represent the atoms necessary to complete a heteroaromatic ring with no more than one nitrog
    Type: Grant
    Filed: December 16, 2003
    Date of Patent: March 28, 2006
    Assignee: AGFA Gevaert
    Inventors: Ingrid Geuens, Johan Loccufier, Vera Drieghe
  • Patent number: 7018770
    Abstract: A reflective radiographic material is useful to provide images that can be viewed without a light box. This reflective radiographic material has a reflective support and a silver halide emulsion on one side of the support only. The material can be used with a single green- or blue-light emitting fluorescent intensifying screen as part of an imaging assembly. The reflective support enables the image in the radiographic material to be viewed without a light box and the speed of the material enables the use of low power X-radiation generating equipment.
    Type: Grant
    Filed: March 28, 2005
    Date of Patent: March 28, 2006
    Inventors: Robert E. Dickerson, Kenneth A. Duke, Phillip C. Bunch, Alan S. Fitterman
  • Patent number: 7014989
    Abstract: Black-and-white, aqueous-based, silver halide-containing photothermographic materials have increased stability after imaging with the incorporation of at least 0.00005 mol/m2 of a 4-substituted urazole.
    Type: Grant
    Filed: April 18, 2005
    Date of Patent: March 21, 2006
    Assignee: Eastman Kodak Company
    Inventors: Sharon M. Simpson, Kumars Sakizadeh
  • Patent number: 7014977
    Abstract: A reflective radiographic material (at least 200 system speed) is useful especially to provide images that can be viewed without a light box. This reflective radiographic material has a reflective support, a silver halide emulsion on one side of the support only, and a photographic speed of at least 200. The reflective material also includes an incorporated black-and-white developing agent and a co-developing agent, and can be used with a single fluorescent intensifying screen as part of an imaging assembly. The reflective support enables viewing the resulting image without a light box and the high speed of the material enables the use of low power X-radiation generating equipment. The incorporated black-and-white developing agent and co-developing agent allow the radiographic material to be quickly processed after exposure using simplified processing chemistry.
    Type: Grant
    Filed: March 28, 2005
    Date of Patent: March 21, 2006
    Assignee: Eastman Kodak Company
    Inventors: Robert E. Dickerson, Kenneth A. Duke, Alan S. Fitterman
  • Patent number: 7008748
    Abstract: Thermally developable materials such as thermographic and photothermographic materials include a co-precipitate comprising first and second organic silver salts, the first organic silver salt comprising a silver salt of a nitrogen-containing heterocyclic compound containing an imino group, and the second organic silver salt comprising a silver salt of a mercaptotriazole. The first organic silver salt can be used in the imaging process as a source of reducible silver ions, and the second organic silver salt can be a source of a toning agent. The co-precipitate can be prepared using double-jet precipitation techniques to provide an aqueous dispersion that can be used in imaging formulations.
    Type: Grant
    Filed: September 7, 2004
    Date of Patent: March 7, 2006
    Assignee: Eastman Kodak Company
    Inventors: Dirk J. Hasberg, Doreen C. Lynch, Kui Chen-Ho, Chaofeng Zou
  • 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
  • Patent number: 6994952
    Abstract: A silver halide emulsion comprises at least a dispersion medium, water and a silver halide grain, wherein grains occupying from 40 to 100% of the total projected area of said gains have an AgI content of 85 to 100 mol %, a single kind of outer shape except for size and the equivalent-circle projected diameter of from 0.002 to 20 ?m.
    Type: Grant
    Filed: March 20, 2003
    Date of Patent: February 7, 2006
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Mitsuo Saitou, Satoshi Aiba, Sumito Yamada, Eiichi Okutsu
  • Patent number: 6991894
    Abstract: Thermographic and photothermographic materials comprise a barrier layer to provide physical protection and to prevent migration of diffusible imaging components and by-products resulting from high temperature imaging and/or development. The barrier layer comprises a scavenger that is a metal hydroxide or ester. This barrier layer is capable of retarding diffusion of mobile chemicals such as organic carboxylic acids, developers, and toners.
    Type: Grant
    Filed: November 3, 2003
    Date of Patent: January 31, 2006
    Assignee: Eastman Kodak Company
    Inventors: Kumars Sakizadeh, Karissa L. Eckert, Gary E. LaBelle, David R. Whitcomb
  • Patent number: 6974662
    Abstract: Improved compounds and base precursors that undergo thermal decomposition are disclosed. Thermal base precursors, and in particular, a novel class of salts of arylsulfonylacetic acids as bleaching agents or promoting for photothermographic use are disclosed. Compositions employing these thermal base precursors are suitable for use in acutance and antihalation systems, bleachable filter dye materials, and in promoting unblocking of various components such as blocked developers, especially in photothermographic elements.
    Type: Grant
    Filed: August 4, 2003
    Date of Patent: December 13, 2005
    Assignee: Eastman Kodak Company
    Inventors: Ramanuj Goswami, Wojciech K. Slusarek, David H. Levy
  • Patent number: 6964842
    Abstract: Aqueous-based photothermographic materials comprise a hydrophilic binder, preformed silver halides, an organic silver salt, a reducing agent composition, and one or more benzothiazolium, benzoselenazolium, or benzotellurazolium salts as antifoggants. These photothermographic materials can be used in combination with phosphor intensifying screens for radiographic imaging.
    Type: Grant
    Filed: August 14, 2003
    Date of Patent: November 15, 2005
    Assignee: Eastman Kodak Company
    Inventors: Chaofeng Zou, Roger L. Klaus
  • Patent number: 6958209
    Abstract: A photothermographic material comprising a support and having thereon an image forming layer containing an organic silver salt, light-sensitive silver halide grains, binder and a reducing agent, wherein the reducing agent comprises: a reducing agent A containing at least a bisphenol derivative represented by following Formula (A-1); and a reducing agent B containing at least a bisphenol derivative not represented by the Formula (A-1), and the amount of reducing agent A is 5 to 45 weight % of the total weight of the reducing agent A and reducing agent B.
    Type: Grant
    Filed: December 27, 2002
    Date of Patent: October 25, 2005
    Assignee: Konica Corporation
    Inventors: Kiyokazu Morita, Narito Goto, Ayumu Nishijima
  • Patent number: 6949333
    Abstract: The present invention provides a photosensitive silver halide photographic emulsion comprising a silver iodide content of 41 mol % or more and 100 mol % or less and including a silver halide to which reduction sensitization is applied in the course of particle formation, and silver halide photographic emulsion comprising 41 mol % to 100 mol % of silver iodide and subjected to at least one of chalcogen sensitization and gold sensitization to the insides of particles.
    Type: Grant
    Filed: January 16, 2004
    Date of Patent: September 27, 2005
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Hiroyuki Mifune
  • Patent number: 6942960
    Abstract: Aqueous-based thermally sensitive emulsions and photothermographic imaging materials include photosensitive silver halide grains that comprise at least 15 mol % iodide based on total silver in the grains and are doped with bismuth (+3). These materials have increased photographic speed especially in the infrared region of the electromagnetic spectrum.
    Type: Grant
    Filed: August 12, 2003
    Date of Patent: September 13, 2005
    Assignee: Eastman Kodak Company
    Inventors: Joe E. Maskasky, David A. Dickinson, Victor P. Scaccia, Richard L. Gaines
  • Patent number: 6939667
    Abstract: A photo sensitive emulsion disclosed, comprising an organic silver salt, a photosensitive silver halide and a dispersing medium, wherein the organic silver salt is comprised of at least a first organic silver salt grains and a second organic silver salt grains which are different in average grain size from each other. A photothermographic material containing is also disclosed.
    Type: Grant
    Filed: June 17, 2004
    Date of Patent: September 6, 2005
    Assignee: Konica Minolta Medical & Graphic, Inc.
    Inventor: Yasuo Taima
  • Patent number: 6924089
    Abstract: An object of the present invention is to provide a novel heat-developable photosensitive material which hardly exerts an influence on the image color tone and exhibits high sensitivity. Disclosed is a heat-developable photosensitive material comprises, on the same surface of a substrate, at least (a) photosensitive silver halide, (b) a reducible silver salt, (c) a compound represented by the general formula (5), (d) a binder, (e) a compound represented by the general formula (6) or (7), and (f) a compound represented by the general formula (3).
    Type: Grant
    Filed: August 1, 2002
    Date of Patent: August 2, 2005
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Toyohisa Oya, Hirokazu Kyota, Kouta Fukui
  • Patent number: 6916599
    Abstract: A photothermographic material comprising: a support; and a photosensitive silver halide, a nonphotosensitive organic silver salt, a reducing agent and a binder, wherein the photosensitive silver halide comprises 90% by mole or more of a silver iodide and has a silver iodobromide structure having an average silver iodide content of 35% by mole or less in vicinity of a surface thereof.
    Type: Grant
    Filed: April 21, 2003
    Date of Patent: July 12, 2005
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Fumito Nariyuki
  • Patent number: 6913876
    Abstract: A photothermographic material is disclosed, comprising a support, an organic silver salt, a light-sensitive silver halide, a reducing agent and a contrast-increasing agent, wherein the photothermographic material further comprises a secondary or tertiary amino group-containing alkoxysilane compound and a polyethyleneimine. A light-shielding package of the photothermographic material is also disclosed.
    Type: Grant
    Filed: July 24, 2003
    Date of Patent: July 5, 2005
    Assignee: Konica Corporation
    Inventor: Yasunobu Kobayashi