Mercaptan, Thioether, Thione, Disulfide Or Organic Bisulfite Patents (Class 430/611)
  • Patent number: 8034542
    Abstract: An electromagnetic shielding film for plasma display which is excellent in electromagnetic shielding characteristics for effectively shielding electromagnetic waves, near infrared rays, stray light, external light, and the like and even when stored under a wet heat condition, is small in change of color tint and good in adhesion, with a blackening layer hardly peeled away, is provided by a transparent electromagnetic shielding film including a transparent support having thereon a conductive metal layer in a pattern-like state having an electromagnetic shielding ability and having a surface covered by a blackening layer, with the blackening layer made of an alloy of nickel and zinc in a nickel/zinc mass ratio of from 0.5 to 50.
    Type: Grant
    Filed: March 28, 2007
    Date of Patent: October 11, 2011
    Assignee: FUJIFILM Corporation
    Inventors: Hirotomo Sasaki, Jun Matsumoto, Takayasu Yamazaki, Akimitsu Haijima, Yoshihiro Fujita
  • Patent number: 7741017
    Abstract: The present invention relates to a silver halide color photographic light-sensitive material wherein at least one of light-sensitive silver halide emulsion layers includes a silver halide emulsion having a silver chloride content of at least 95 mol % and a silver iodide content of 0.05 mol % to 0.75 mol % and/or a silver bromide content of 0.05 mol % to 4.00 mol % and further at least one compound represented by the following formula (I): X-(L)n-Y??Formula (I) wherein X represents a group adsorptive to a silver halide, L represents a divalent connecting group comprising one of an atom and an atomic group including at least one of a carbon atom, a nitrogen atom, a sulfur atom and an oxygen atom, Y denotes a reducible group and n denotes an integer of 0 or 1.
    Type: Grant
    Filed: June 3, 2008
    Date of Patent: June 22, 2010
    Assignee: FUJIFILM Corporation
    Inventors: Atsushi Matsunaga, Tadashi Inaba, Shinichi Ichikawa
  • Patent number: 7410745
    Abstract: The invention provides a photothermographic material including: a support and an image-forming layer including a non-photosensitive silver salt, a photosensitive silver halide, a binder, and a reduction agent disposed on the support, wherein a silver iodide content in the photosensitive silver halide is in a range from 40 mol % to 100 mol %; and an average sphere-equivalent diameter of the photosensitive silver halide is in a range from 0.3 ?m to 5.0 ?m. The photothermographic material may further include a silver iodide complex forming agent as a compound which substantially reduces visible light absorption caused by the photosensitive silver halide after thermal development. At least 50%, in terms of a projected area, of the photosensitive silver halide may be occupied by tabular silver halide grains having an aspect ratio of from 2 to 50 and being deposited with a silver salt in an epitaxial growth manner.
    Type: Grant
    Filed: December 17, 2003
    Date of Patent: August 12, 2008
    Assignee: FUJIFILM Corporation
    Inventors: Tomoyuki Ohzeki, Eiichi Okutsu
  • Patent number: 7354701
    Abstract: The invention provides a color photographic element comprising at least one light-sensitive silver halide emulsion layer or a non silver-containing light-insensitive layer, in which at least one of these layers contains a colorless heterocyclic compound having either one or two hetero atoms in the ring or ring system, being other than an imidazole compound, that undergoes less than 10% chemical or redox reaction directly with oxidized developer and which has a partition coefficient to enable the photographic speed of the element to be increased by at least 0.03 stop without increasing granularity, compared to the same element without the compound. The heterocyclic compounds increase speed without a concomitant increase in size of the light-sensitive silver halide grains.
    Type: Grant
    Filed: October 1, 2004
    Date of Patent: April 8, 2008
    Assignee: Eastman Kodak Company
    Inventors: Bernard A. Clark, Philip A. Allway, Tania Zuberi, Stephen P. Singer, Charles E. Heckler, Louis E. Friedrich
  • Patent number: 7258969
    Abstract: A silver halide emulsion which exhibits high sensitivity, high contrast, little sensitivity variation with humidity conditions at the time of exposure, and excellent reciprocity law properties at high illumination intensities. Also, a method of preparing the emulsion in a stable manner, and a silver halide color photographic photosensitive material and an image forming method that use the emulsion. The emulsion includes a mesoionic compound having a thiolate structure or a protonated thiolate structure, and the emulsion is sensitized by an Au (III) compound. The emulsion preferably contains an oxidatively dimerized form of a mesoionic compound having a thiolate structure, and a silver chloride content of at least 90 mol %.
    Type: Grant
    Filed: March 28, 2006
    Date of Patent: August 21, 2007
    Assignee: Fujifilm Corporation
    Inventors: Hirotomo Sasaki, Hideki Maeta, Naoto Ohshima
  • Patent number: 7250249
    Abstract: A black and white photothermographic material including, on at least one side of a support, an image forming layer including at least a photosensitive silver halide, a silver salt of a fatty acid, a reducing agent for silver ions, and a binder, wherein the black and white photothermographic material includes a compound represented by the following formula (I) as the reducing agent and a compound represented by the following formula (BC-1) as a coupler: A black and white photothermographic material which exhibits low fog, high image density, excellent image tone, and excellent raw stock storability is provided.
    Type: Grant
    Filed: March 15, 2006
    Date of Patent: July 31, 2007
    Assignee: FujiFilm Corporation
    Inventor: Yasuhiro Yoshioka
  • Patent number: 7220537
    Abstract: This invention provides a silver halide emulsion, a silver halide photographic material and an image forming method, which is excellent in high sensitivity, good gradation, coating composition store stability and latent image store stability regardless exposing method, particularly excellent latent image store stability at high intensity and shot period exposure of digital exposure, and by which a high quality print is obtained. The silver halide emulsion contains silver halide grains having silver chloride content of at least 90 mol %, silver iodide content of 0-2.0 mol %, and silver bromide content of 0.02-5.
    Type: Grant
    Filed: January 31, 2003
    Date of Patent: May 22, 2007
    Assignee: Konica Minolta Photo Imaging, Inc.
    Inventors: Toshiya Kondo, Shuji Murakami, Koichiro Kuroda
  • Patent number: 7211373
    Abstract: A photothermographic material comprising a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent for a silver ion and a binder on one surface of a support, wherein a silver behenate-content of the non-photosensitive organic silver salt is 40 to 70 mol %, and the photothermographic material comprises a compound that can be one-electron-oxidized to provide a one-electron oxidation product, which further releases at least 1 electron, one of during and after a subsequent reaction.
    Type: Grant
    Filed: April 1, 2003
    Date of Patent: May 1, 2007
    Assignee: Fujifilm Corporation
    Inventors: Tomoyuki Ohzeki, Kohzaburoh Yamada
  • Patent number: 7189502
    Abstract: A radiographic material containing tabular silver halide grains also includes an amido compound as an antifoggant precursor that can slowly release an antifoggant over time. These compounds are present in reactive association with the silver halide in tabular silver halide emulsion layers, and are present in an amount of at least 0.5 mmol/mol of silver. The radiographic materials are protected from fog during storage particularly in high temperature environments.
    Type: Grant
    Filed: October 3, 2005
    Date of Patent: March 13, 2007
    Assignee: Eastman Kodak Company
    Inventors: Robert E. Dickerson, George J. Burgmaier, Steven P. Szatynski, Stephen A. Hershey
  • Patent number: 7183024
    Abstract: The present invention is directed to a method of forming a positive image in a photothermographic element comprising a potentially negative-working emulsion wherein fog density development is imagewise inhibited in exposed areas of the image upon thermal development. In one embodiment of the invention, a density-inhibiting agent is released during thermal development which agent inhibits the thermal development of unexposed silver salts in the exposed areas relative to the unexposed areas. The method preferably comprises imagewise exposing the film with a non-solarizing amount of radiation/energy to form a latent image and thermally developing the latent image in a single development step to produce a positive image in the element. The present invention is also directed to a photothermographic element that can be used in the present process in which a positive image characterized by high speed and discrimination is formed when exposed and thermally heated above 150° C.
    Type: Grant
    Filed: June 12, 2003
    Date of Patent: February 27, 2007
    Assignee: Eastman Kodak Company
    Inventors: Michael R. Roberts, Paul B. Gilman, Donald L. Black, Kurt M. Schroeder
  • Patent number: 7163785
    Abstract: A silver halide photographic material, including a support having thereon a silver halide emulsion layer, the silver halide emulsion layer containing silver halide particles having a silver chloride content of more than or equal to 90 mol %, wherein a compound represented by Formula (S) is contained in the interior and on a surface of the silver halide particles and in a binder of the silver halide emulsion layer, and the silver halide particles have more than two silver halide phases therein having different concentration of the compound represented by Formula (S):
    Type: Grant
    Filed: November 20, 2002
    Date of Patent: January 16, 2007
    Assignee: Konica Minolta Photo Imaging, Inc.
    Inventors: Toshiya Kondo, Koichiro Kuroda
  • Patent number: 7157219
    Abstract: Photothermographic materials are designed with increased photospeed by chemical sensitizing the photosensitive silver halide grains with a combination of compounds. A first chemical sensitizer is a specific gold(III)-containing compound and a second chemical sensitizer is a sulfur-containing compound that is a diphenylphosphine sulfide. The molar ratio of the gold(III)-containing compound to the sulfur-containing compound is at least 1:1.
    Type: Grant
    Filed: September 30, 2005
    Date of Patent: January 2, 2007
    Assignee: Eastman Kodak Company
    Inventors: Sharon M. Simpson, Lilia P. Burleva, Kumars Sakizadeh
  • Patent number: 7150963
    Abstract: A silver halide emulsion containing a compound represented by the following formula (1) or (2): wherein R1 represents an OH group, an SH group, or an —NR2R3 group in which R2 and R3 each independently represent a hydrogen atom, an alkyl group, an aryl group, a heterocyclic group, an alkylsulfonyl group, or an arylsulfonyl group; L represents an alkenylene group, an arylene group, an —N?N— group, a divalent aromatic heterocyclic group, or a —C(R4)?N— group in which R4 represents a hydrogen atom, an alkyl group, an aryl group, or a heterocyclic group; n represents 0 or 1; X and Y each independently represent a nitrogen atom or a —CR5— group in which R5 represents a hydrogen atom or a substituent bondable to the carbon atom; Z represents an atomic group in the 5- to 7-membered ring; and M represents a hydrogen atom, a metal ion, or a quaternary ammonium ion.
    Type: Grant
    Filed: September 9, 2004
    Date of Patent: December 19, 2006
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Katsuyuki Watanabe, Hideo Hanawa, Takeshi Funakubo
  • Patent number: 7138222
    Abstract: The present invention provides a silver halide color photographic photosensitive material that includes coupler-containing sensitive emulsion layer units on a support. Each of the photosensitive emulsion layer units are constituted of at least two photosensitive emulsion layers having sensitivities which are different from each other. An emulsion layer of the highest sensitivity among the at least two photosensitive emulsion layers contains at least one silver halide emulsion in which tabular silver halide grains with an average aspect ratio of 3 or more substantially including dislocation lines account for 50% or more of the total projected areas. Photosensitive emulsion layers other than the emulsion layer of the highest sensitivity consist of a silver halide emulsion containing silver halide grains that account for 70% or more of the total projected areas and include host grains that satisfy a specific aspect ratio condition and epitaxially joined protrusions.
    Type: Grant
    Filed: March 28, 2005
    Date of Patent: November 21, 2006
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Nobuyuki Haraguchi, Yasushi Miyamoto
  • Patent number: 7129031
    Abstract: A green-sensitized black-and-white silver halide negative working photographic material comprising a support having thereon at least one light-sensitive silver halide emulsion layer containing tabular silver halide grains, further comprising in said emulsion layer or in a layer adjacent thereto, a heteroatomic sulfinic acid compound, a disulfide compound or a combination thereof, wherein each of said compounds has a solubilizing group having a pKa-value of 10 or less.
    Type: Grant
    Filed: June 18, 2004
    Date of Patent: October 31, 2006
    Assignee: Agfa-Gevaert
    Inventors: Johan Loccufier, Dirk Bollen
  • Patent number: 7125657
    Abstract: The present invention provides a photothermographic material including a support having disposed thereon an image-forming layer that contains at least a non-photosensitive organic silver salt, a photosensitive silver halide, a reducing agent and a binder, and further including a compound represented by the following formula (I): A-(W)n-P??(I) wherein A represents an atomic group having at least two mercapto groups as the substituent; W represents a divalent linking group; n represents 0 or 1; and P represents a pyrazolidone group.
    Type: Grant
    Filed: December 16, 2003
    Date of Patent: October 24, 2006
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Katsuyuki Watanabe, Hiroyuki Mifune
  • Patent number: 7112398
    Abstract: This invention relates to an imaging element comprising an imaging layer having associated therewith a compound of Structure I: wherein: the substituents are as defined in the application.
    Type: Grant
    Filed: January 9, 2004
    Date of Patent: September 26, 2006
    Assignee: Eastman Kodak Company
    Inventors: Wojciech K. Slusarek, Xiqiang Yang, Mark E. Irving, David H. Levy, Jared B. Mooberry, James J. Seifert, James H. Reynolds, Lyn M. Irving
  • 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: 7105286
    Abstract: The present invention relates to a silver halide photographic material comprising a paper support having resin layers coated on both sides of a base paper, and in particular, to a silver halide photographic material exhibiting superior glossiness and improved sharpness, long-term stability, fingerprint resistance and pressure resistance. The silver halide photographic material comprising on one side of the paper support having resin coat layers on both sides of a base paper, one or more light-sensitive layers and one or more light-insensitive layers, wherein after the photographic material of an L-size (having a length of 89 mm in a machine direction of the base paper and a length of 127 mm vertical to the machine direction) is processed, the photographic material exhibits an image clarity (C-value) of 20% to 60% which is determined using a 1.
    Type: Grant
    Filed: November 20, 2002
    Date of Patent: September 12, 2006
    Assignee: Konica Minolta Photo Imaging, Inc.
    Inventor: Takesi Nakamura
  • Patent number: 7097961
    Abstract: A substantially light-insensitive black and white monosheet thermographic recording material comprising a support and a thermosensitive element, said thermosensitive element containing a substantially light-insensitive organic silver salt, an organic reducing agent therefor in thermal working relationship therewith, at least one binder and at least one stabilizer represented by formula (I): wherein R1, R2, R3 and R4 are independently selected from the group consisting of a hydrogen atom, halogen atoms and aliphatic, alkoxy, nitro, acyl, sulfonyl, nitrile, alkaryl, aryl, amino, thioalkyl, aldehyde, urea, —O—(C?O)-alkyl, —O—(C?O)-aryl, —O—(C?O)—O-alkyl, —O—(C?O)—O-aryl, —NH—(C?O)-alkyl, —NH—(C?O)-aryl, —(C?O)—NH-alkyl, —(C?O)—NH-aryl, —NH—(SO2)-alkyl, —NH—(SO2)-aryl, —(SO2)—NH-alkyl, —(SO2)—NH-aryl groups; X is represented by -A(-M)n or is selected from the group consisting of substituted aliphatic groups, unsubstituted aliphatic groups, substituted cycloaliphatic groups, unsubstituted cycloaliphatic groups
    Type: Grant
    Filed: May 12, 2005
    Date of Patent: August 29, 2006
    Assignee: Agfa Gevaert
    Inventors: Frank Louwet, Johan Loccufier
  • 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: 7074550
    Abstract: A silver halide color photosensitive material comprising a support and, superimposed thereon, at least one blue-sensitive silver halide emulsion layer, green-sensitive silver halide emulsion layer and red-sensitive silver halide emulsion layer, wherein (i) the specified speed of the photosensitive material is 350 or higher, (ii) the coating amount of silver in the photosensitive material is 7 g/m2 or less, and (iii) any of the color-sensitive silver halide emulsion layers is composed of two or more silver halide emulsion layers of different photographic speeds, of which the silver halide emulsion layer with the highest photographic speed contains tabular silver halide grains of 8 or greater aspect ratio in a ratio of 70% or more based on the total projected area and regular-crystal silver halide grains of 0.1 to 0.5 ?m equivalent sphere diameter in a ratio of 0.5 to 5% based on the total projected area.
    Type: Grant
    Filed: September 23, 2004
    Date of Patent: July 11, 2006
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Masaaki Miki
  • 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: 7063941
    Abstract: A photothermographic emulsion is prepared by chemically sensitizing silver halide grains by oxidative decomposition of an organic sulfur-containing compound on or around the silver halide grains. This procedure uses a unique sequence of steps and provides increased photographic speed and manufacturing reproducibility. The resulting photothermographic emulsion can be used to prepare photothermographic materials.
    Type: Grant
    Filed: December 9, 2003
    Date of Patent: June 20, 2006
    Assignee: Eastman Kodak Company
    Inventors: Lilia P. Burleva, Mark C. Skinner, Kumars Sakizadeh, Sharon M. Simpson
  • 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: 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: 6951711
    Abstract: A silver halide color photographic lightsensitive material containing at least one compound capable of increasing photographic speed, the compound having at least three heteroatoms in its molecule, and wherein at least one layer of the silver halide emulsion layers comprises an emulsion, the emulsion consisting of a lightsensitive silver halide emulsion wherein 50% or more in number of all the silver halide grains are occupied by tabular grains having (111) faces as main planes, the tabular grains (i) composed of silver iodobromide or silver chloroiodobromide, (ii) having an equivalent circle diameter of 1.0 ?m or more and a thickness of 0.15 ?m or less, and (iii) composed of core portions of 0.1 ?m or less thickness free of growth ring structure and composed of silver iodobromide and shell portions having ten or more dislocation lines.
    Type: Grant
    Filed: October 23, 2003
    Date of Patent: October 4, 2005
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Masaaki Miki, Yoshiyasu Inami, Junichiro Hosokawa
  • Patent number: 6949334
    Abstract: A method for forming images on a silver halide color photographic photosensitive material having a substrate and photographic structural layers thereon, including, at least three silver halide color photosensitive layers having different photosensitive regions, respectively, and at least one non-photosensitive hydrophilic colloid layer is disclosed. At least one of the photosensitive layers contains 90 mol % or more of silver chloride. Shortly after the silver halide color photographic photosensitive material has been scan-exposed with laser beams, the material is rapid-processed with a low replenishing amount.
    Type: Grant
    Filed: April 14, 2003
    Date of Patent: September 27, 2005
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Naoto Ohshima, Akito Yokozawa, Naoya Shibata
  • 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: 6921631
    Abstract: A silver halide color photographic material, which can provide photographs reduced in unevenness of finished image density with high productivity and at low prices even when it undergoes exposure and photographic processing operations under high-speed transport in the form of sheets, and a method of forming images by use of such a photographic material.
    Type: Grant
    Filed: July 17, 2003
    Date of Patent: July 26, 2005
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Yasuaki Deguchi, Hiroyuki Yoneyama, Kazuaki Yoshida, Shin Soejima, Yoshiro Ochiai, Shinichi Nakahira
  • Patent number: 6908731
    Abstract: A substantially light-insensitive 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 stabilizer selected from the group consisting of 1-phenyl-5-mercaptotetrazole compounds in which the phenyl group is substituted with a substituent containing an optionally substituted aryl group; and
    Type: Grant
    Filed: November 13, 2003
    Date of Patent: June 21, 2005
    Assignee: Agfa-Gevaert
    Inventors: Ingrid Geuens, Carlo Uyttendaele, Ivan Hoogmartens, Johan Loccufier
  • Patent number: 6902880
    Abstract: A substantially light-insensitive 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 stabilizer selected from the group consisting of 1-(5-mercapto-1-tetrazolyl)-acetyl compounds represented by formula (I): wherein R1 is —NR2R3, —OR4 or an optionally substituted aryl or heteroaryl group; R2 is hydrogen or an optionally substituted alkyl, aryl or heteroaryl group; R3 is an optionally substituted aryl or heteroaryl group; and R4 is an optionally substituted aryl group; and compounds with two or more groups represented by formula (II): where Q comprises the necessary atoms to form a 5- or 6-membered unsaturated heterocyclic ring, A is hydrogen, a counterion to compensate the negative charge of the thiolate group or two or more A groups provide a linki
    Type: Grant
    Filed: November 10, 2003
    Date of Patent: June 7, 2005
    Assignee: AGFA-Gevaert
    Inventors: Ingrid Geuens, Johan Loccufier
  • Patent number: 6890705
    Abstract: The second silver halide photosensitive material comprises a substrate and at least one photosensitive silver halide emulsion layer formed thereon, the silver halide photosensitive material comprising at least two types of silver halide grains with different projected areas having photosensitivity in the same spectral range; silver halide grains having a larger projected area having a refractive index n1 and an average thickness a, and silver halide grains having a smaller projected area having a refractive index n2 and an average thickness b; and the silver halide grains satisfying the conditions defined by the following equation (1): n2?n1, and a?b×(n2/n1)??(1).
    Type: Grant
    Filed: May 23, 2002
    Date of Patent: May 10, 2005
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Kiyoteru Miyake, Masahiro Asami
  • Patent number: 6824962
    Abstract: Disclosed is a photothermographic material containing at least a photosensitive silver halide, a non-photosensitive silver salt of an organic acid, a reducing agent for silver ions and a binder on one surface of a support, wherein the material contains a compound producing imagewise a chemical species that can form development initiation points on and in the vicinity of the non-photosensitive silver salt of an organic acid or the like and an organic gold compound and the photosensitive silver halide has a mean grain size of 0.12 &mgr;m or less. This photothermographic material shows high sensitivity, low fog, high Dmax (maximum density), little increase of fog during storage and low temperature and humidity dependency during development.
    Type: Grant
    Filed: January 29, 2002
    Date of Patent: November 30, 2004
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Tokuju Oikawa
  • Patent number: 6811963
    Abstract: This invention relates to a silver halide photographic element comprising a support bearing a cyan dye image-forming unit comprised of at least one red-sensitive silver halide emulsion layer having associated therewith at least one cyan dye-forming coupler, a magenta dye image-forming unit comprising at least one green-sensitive silver halide emulsion layer having associated therewith at least one magenta dye-forming coupler, and a yellow dye image-forming unit comprising at least one blue-sensitive silver halide emulsion layer having associated therewith at least one yellow dye-forming coupler, wherein at least one of the dye image forming units contains layers of differing sensitivities, and the layer of highest sensitivity contains a development promoting agent or a specific coupler as described herein, or a combination thereof, and a silver halide emulsion comprising tabular silver halide grains having associated therewith at least two dye layers comprising (a) an inner dye layer adjacent to the silver ha
    Type: Grant
    Filed: January 17, 2003
    Date of Patent: November 2, 2004
    Assignee: Eastman Kodak Company
    Inventors: Sharon G. Johnston, Stephen P. Singer, Drake M. Michno, James A. Friday, David R. Foster
  • Publication number: 20040152027
    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): 1
    Type: Application
    Filed: December 16, 2003
    Publication date: August 5, 2004
    Applicant: AGFA-GEVAERT
    Inventors: Ingrid Geuens, Johan Loccufier, Vera Drieghe
  • Patent number: 6770428
    Abstract: Aqueous-based thermally developable emulsions and photothermographic imaging materials include photosensitive silver halide core-shell grains that comprise at least 20 mol % iodide based on total silver, an amount of iodide in the core of the grains that can be up to the iodide saturation limit in silver iodobromide, and an amount of iodide in the shell of the grains that is at least 2 mol % less than the amount of iodide present in the core, and further provided that the total amount of silver in the shell is from about 10 to about 80 mol % of total silver in the grains. These materials provide desired Dmax and reduced image “print out”.
    Type: Grant
    Filed: November 15, 2002
    Date of Patent: August 3, 2004
    Assignee: Eastman Kodak Company
    Inventors: Joe E. Maskasky, Victor P. Scaccia, David A. Dickinson
  • Publication number: 20040146816
    Abstract: A silver halide emulsion comprising silver halide grains containing at least 90 mol % chloride, 0.02 to 5.0 mol % bromide and 0 to 2.0 mol % iodide, which is prepared by a process comprising (i) forming a silver halide grain emulsion, (ii) subjecting the silver halide emulsion to desalting and (iii) subjecting the desalted silver halide emulsion to chemical sensitization by adding a chemical sensitizer, wherein in the step (iii), at least one compound represented by the following formula (1) to (4) is added before adding a chemical sensitizer and at least one compound represented by the following formula (1) to (4) is further added after adding a chemical sensitizer.
    Type: Application
    Filed: January 14, 2004
    Publication date: July 29, 2004
    Applicant: KONICA MINOLTA HOLDINGS, INC.
    Inventors: Toshiya Kondo, Shuji Murakami, Koichiro Kuroda
  • Patent number: 6764816
    Abstract: The present invention provides a thermally developable photosensitive material including a support, the image-forming layer containing a non-photosensitive organic silver salt, a photosensitive silver halide, a reducing agent, a binder and a compound represented by the following formula (I), wherein after the material is exposed and thermally developed at 121° C.
    Type: Grant
    Filed: March 22, 2002
    Date of Patent: July 20, 2004
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Tomoyuki Ohzeki
  • Publication number: 20040137388
    Abstract: A substantially light-insensitive black and white monosheet thermographic recording material comprising a support and a thermosensitive element, said 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 2-mercapto-benzothiazole compound represented by formula (I): 1
    Type: Application
    Filed: November 10, 2003
    Publication date: July 15, 2004
    Applicant: AGFA-GEVAERT
    Inventors: Ingrid Geuens, Johan Loccufier
  • Publication number: 20040137389
    Abstract: The invention is a heat-developable light-sensitive material having, on a face of a support thereof, a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent and a binder. In first and second aspects, the silver iodide content of the silver halide is from 5 mol % to 100 mol %, and the material contains a compound (eg. silver iodide complex-forming agent) capable of substantially lowering through heat development a spectral absorption intensity derived from the silver halide in visible and ultraviolet regions. In the first aspect, the silver halide is photosensitive silver halide grains having a mean diameter of 0.001 to 0.08 &mgr;m. In its second aspect, the material is exposed to light shorter than 700 nm.
    Type: Application
    Filed: December 16, 2003
    Publication date: July 15, 2004
    Inventors: Kouta Fukui, Toyohisa Oya
  • Publication number: 20040137387
    Abstract: A substantially light-insensitive 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 stabilizer selected from the group consisting of 1-(5-mercapto-1-tetrazolyl)-acetyl compounds represented by formula (I): 1
    Type: Application
    Filed: November 10, 2003
    Publication date: July 15, 2004
    Applicant: AGFA-GEVAERT
    Inventors: Ingrid Geuens, Johan Loccufier
  • Publication number: 20040131983
    Abstract: The invention provides a photothermographic material including: a support and an image-forming layer including a non-photosenisitive silver salt, a photosensitive silver halide, a binder, and a reduction agent disposed on the support, wherein a silver iodide content in the photosensitive silver halide is in a range from 40 mol % to 100 mol %; and an average sphere-equivalent diameter of the photosensitive silver halide is in a range from 0.3 &mgr;m to 5.0 &mgr;m. The photothermographic material may further include a silver iodide complex forming agent as a compound which substantially reduces visible light absorption caused by the photosenisitive silver halide after thermal development. At least 50%, in terms of a projected area, of the photosensitive silver halide may be occupied by tabular silver halide grains having an aspect ratio of from 2 to 50 and being deposited with a silver salt in an epitaxial growth manner.
    Type: Application
    Filed: December 17, 2003
    Publication date: July 8, 2004
    Inventors: Tomoyuki Ohzeki, Eiichi Okutsu
  • Publication number: 20040126722
    Abstract: The present invention provides a photothermographic material comprising a substrate, and a photosensitive silver halide, a non-photosensitive organic silver salt, reducing agents for thermal development and a binder which are provided on the substrate, wherein: the reducing agents for thermal development include a reducing agent which does not form a dye during thermal development and a reducing agent which forms a dye during thermal development; and the reducing agent which forms a dye has higher activity than that of the reducing agent which does not form a dye. It is preferable that the reducing agent which forms a dye at thermal development and has a specific chemical structure is contained in an amount of 40% by mol or less relative to a total amount of the reducing agents.
    Type: Application
    Filed: July 21, 2003
    Publication date: July 1, 2004
    Inventors: Yasuhiro Yoshioka, Toyohisa Oya
  • Publication number: 20040126723
    Abstract: The present invention provides a photothermographic material including a support having disposed thereon an image-forming layer that contains at least a non-photosensitive organic silver salt, a photosensitive silver halide, a reducing agent and a binder, and further including a compound represented by the following formula (I):
    Type: Application
    Filed: December 16, 2003
    Publication date: July 1, 2004
    Inventors: Katsuyuki Watanabe, Hiroyuki Mifune
  • Publication number: 20040110103
    Abstract: A colour photographic silver halide material comprising a substrate, at least one red-sensitive silver halide emulsion layer containing at least one cyan coupler, at least one green-sensitive silver halide emulsion layer containing at least one magenta coupler and at least one blue-sensitive silver halide emulsion layer containing at least one yellow coupler, characterised in that the silver halide crystals of the red-sensitive layer have a chloride content of at least 95 mol %, the cyan coupler corresponding to formula 1
    Type: Application
    Filed: July 2, 2003
    Publication date: June 10, 2004
    Applicant: Agfa-Gevaert (Belgium)
    Inventors: Ralf Weimann, Markus Geiger, Cuong Ly, Klaus Sinzger, Beate Weber, Heinz Wiesen
  • Patent number: 6740482
    Abstract: The invention provides a radiation sensitive emulsion comprised of a dispersing medium and silver iodochloride grains WHEREIN the silver iodochloride grains are partially bounded by {100} crystal faces satisfying the relative orientation and spacing of cubic grains and contain from 0.
    Type: Grant
    Filed: December 22, 1994
    Date of Patent: May 25, 2004
    Assignee: Eastman Kodak Company
    Inventors: Benjamin Teh-Kung Chen, Roger Lok
  • Publication number: 20040096788
    Abstract: A substantially light-insensitive 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 stabilizer selected from the group consisting of 1-phenyl-5-mercaptotetrazole compounds in which the phenyl group is substituted with a substituent containing an optionally substituted aryl group; and 1
    Type: Application
    Filed: November 12, 2003
    Publication date: May 20, 2004
    Applicant: AGFA-GEVAERT
    Inventors: Ingrid Geuens, Carlo Uyttendaele, Ivan Hoogmartens, Johan Loccufier
  • Publication number: 20040096784
    Abstract: Aqueous-based thermally developable emulsions and photothermographic imaging materials include photosensitive silver halide core-shell grains that comprise at least 20 mol % iodide based on total silver, an amount of iodide in the core of the grains that can be up to the iodide saturation limit in silver iodobromide, and an amount of iodide in the shell of the grains that is at least 2 mol % less than the amount of iodide present in the core, and further provided that the total amount of silver in the shell is from about 10 to about 80 mol % of total silver in the grains. These materials provide desired Dmax and reduced image “print out”.
    Type: Application
    Filed: November 15, 2002
    Publication date: May 20, 2004
    Applicant: Eastman Kodak Company
    Inventors: Joe E. Maskasky, Victor P. Scaccia, David A. Dickinson