Silver Salt Of Organic Acid Patents (Class 430/620)
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Publication number: 20030044738Abstract: A photothermographic material is disclosed, comprising a support having thereon an image forming layer containing an organic silver salt, further thereon a protective layer and optionally an interlayer between the support and the image forming layer, wherein at least one of the image forming layer and the interlayer contains an alkoxy-silane compound having at least two primary or secondary amino groups or a salt thereof or a Schiff base formed through dehydration condensation of an alkoxy-silane compound having at least one primary amino group and a ketone compound.Type: ApplicationFiled: June 17, 2002Publication date: March 6, 2003Applicant: KONICA CORPORATIONInventor: Toshihisa Takeyama
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Publication number: 20030008251Abstract: Disclosed is a photothermographic material containing a non-photosensitive silver salt, a photosensitive silver halide and a binder on a support, which comprises a nucleating agent and a surfactant represented by the following formula (F):Type: ApplicationFiled: September 26, 2001Publication date: January 9, 2003Inventor: Tetsuo Yamaguchi
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Publication number: 20020197570Abstract: 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: ApplicationFiled: March 22, 2002Publication date: December 26, 2002Inventor: Tomoyuki Ohzeki
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Patent number: 6497999Abstract: The invention is directed to a color photothermographic film in which particles comprising an organic silver salt is treated with a passivating agent. In particular, the present invention involves passivating the organic silver salts with an organic adsorbate that blocks the surface of the organic silver salt or ligand, resulting in a reduction of speed loss. The invention is also directed to a method of making a photothermographic element to improve raw stock keeping.Type: GrantFiled: November 21, 2001Date of Patent: December 24, 2002Assignee: Eastman Kodak CompanyInventors: Gregg P. Bryant, JoAnn D. Hanna, Nancy B. Liebert, Mark E. Irving
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Patent number: 6489091Abstract: A photothermographic material disclosed, comprising on a support a light sensitive layer containing an organic silver salt, light sensitive silver halide grains and a solvent, wherein the organic silver salt comprises tabular organic silver salt grains exhibiting an average needle ratio of not less than 1.1 and less than 10.0, the light sensitive silver halide grains having been subjected to chemical sensitization.Type: GrantFiled: February 28, 2001Date of Patent: December 3, 2002Assignee: Konica CorporationInventor: Hideki Takiguchi
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Publication number: 20020177088Abstract: A heat-developable silver halide color photographic light-sensitive material, which has a support and contains, on the support, a photosensitive silver halide, an organosilver salt, a developing agent, and a coupler that is capable of forming a dye upon a coupling reaction with an oxidized developing agent,Type: ApplicationFiled: February 8, 2002Publication date: November 28, 2002Inventor: Jun Arakawa
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Publication number: 20020177090Abstract: The present invention provides a photothermographic material having an image-forming layer that contains a non-photosensitive silver salt of an organic acid, a photosensitive silver halide, a specific nucleating agent, a compound represented by the formula (1) and a binder on at least one side of a support: 1Type: ApplicationFiled: January 16, 2002Publication date: November 28, 2002Inventor: Makoto Ishihara
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Patent number: 6482582Abstract: Disclosed in an image recording material comprising, on a support, a photosensitive silver halide, a reducing agent, a binder and a compound represented by the following Formula (1): wherein, in Formula (1), R1 and R2 each independently represent a substituent, R1 and R2 may be bonded to each other to form a ring, X represents a halogen atom, L represents a methylene group, m represents an integer of 0-7, Y represents a divalent bridging group, n represents 0 or 1 and Z represents a residue derived from a photographically useful compound. This image recording material exhibits high sensitivity, low fog and good storage stability, and is stable against fluctuation of development conditions.Type: GrantFiled: July 24, 2001Date of Patent: November 19, 2002Assignee: Fuji Photo Film Co., Ltd.Inventors: Katsuyuki Watanabe, Masaru Takasaki
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Publication number: 20020164552Abstract: Disclosed is a thermally processed image recording material containing, on one side of a support having an image-forming layer, a silver salt of an organic acid, a reducing agent and at least one kind of a compound represented by the following formula (1): 1Type: ApplicationFiled: February 22, 2002Publication date: November 7, 2002Inventors: Katsuyuki Watanabe, Masaru Takasaki, Toshihide Ezoe, Kohzaburoh Yamada, Yasuhiro Kawanishi, Masahiko Taniguchi
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Patent number: 6472131Abstract: A non-photosensitive silver dimer compound comprises two different silver salts, provided that when the two different silver salts comprise straight-chain, saturated hydrocarbon groups as the silver coordinating ligands, those ligands differ by at least 6 carbon atoms. Many of these silver dimer compounds can be represented by the following Structure I: wherein each E is independently oxygen, sulfur, nitrogen, selenium, or tellurium, R and R′ are different alkyl groups, aryl groups, aromatic heterocyclic groups, or halo atoms, provided that when E is oxygen, R and R′ are both straight-chain, saturated hydrocarbon groups, those hydrocarbon groups differ from each other by at least 6 carbon atoms. These silver dimer compounds are useful in thermally-developable imaging materials including thermographic and photothermographic materials.Type: GrantFiled: March 20, 2001Date of Patent: October 29, 2002Assignee: Eastman Kodak CompanyInventor: David R. Whitcomb
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Patent number: 6472138Abstract: A black and white photothermographic material for laser exposure affording a large covering power and thus affording a high Dmax, and capable of suppressing desensitization in the course of the storage is provided.Type: GrantFiled: September 28, 2000Date of Patent: October 29, 2002Assignee: Fuji Photo Film Co., Ltd.Inventor: Katsutoshi Yamane
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Publication number: 20020155401Abstract: The present invention provides a photothermographic material containing a non-photosensitive silver salt of an organic acid, a photosensitive silver halide, a reducing agent for silver ions and a binder on one surface of a support, which comprises at least one compound represented by the following formula (I) and at least one 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:Type: ApplicationFiled: January 16, 2002Publication date: October 24, 2002Inventor: Tetsuo Yamaguchi
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Publication number: 20020150849Abstract: A recording material comprising a support and a thermosensitive element containing one or more of silver behenate, silver palmitate, and silver stearate, an organic reducing agent therefor in thermal working relationship therewith and a binder, wherein the silver behenate, palmitate, or stearate is not associated with mercury and/or lead ions, production processes for particles of substantially light-insensitive organic silver salt primarily comprising silver behenate, silver palmitate, or stearate, with described X-ray characteristics in the substantial absence of organic solvent.Type: ApplicationFiled: May 14, 2001Publication date: October 17, 2002Applicant: Agfa-GevaertInventors: Sabine Emmers, Bartholomeus Horsten, Ingrid Geuens, Yvan Gilliams, Dirk Bollen, Ivan Hoogmartens, Andre Bellens
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Patent number: 6465167Abstract: A non-photosensitive core-shell silver salt can be used in thermographic and photothermographic imaging compositions and materials. This core-shell silver salt includes one or more silver salts in the core, at least one of which is different from the one or more silver salts used in the shell. The molar ratio of the different silver salts in the core and shell is from about 0.01:1 to about 100:1.Type: GrantFiled: November 2, 2001Date of Patent: October 15, 2002Assignee: Eastman Kodak CompanyInventors: David R. Whitcomb, Oanh Pham
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Patent number: 6465163Abstract: A heat developable light-sensitive material comprises a support, a light-sensitive layer and a non-light-sensitive layer. The light-sensitive layer contains silver halide and a reducing agent. The non-light-sensitive layer contains a cyanine dye represented by the formula (I) or a salt thereof and a base precursor: in which R1 is hydrogen, an aliphatic group, an aromatic group, —NR21R24, —OR21 or —SR21, each of R21 and R24 independently is hydrogen, an aliphatic group or an aromatic group, or R21 and R24 are combined to form a nitrogen-containing heterocyclic ring; R2 is hydrogen, an aliphatic group or an aromatic group; R3 is an aliphatic group; L1 is a methine chain consisting of an odd number of methines; and each of Z1 and Z2 independently is an atomic group forming a five-membered or six-membered nitrogen-containing heterocyclic ring.Type: GrantFiled: August 20, 2001Date of Patent: October 15, 2002Assignee: Fuji Photo Film Co., Ltd.Inventors: Masami Sakurada, Masaki Noro, Itsuo Fujiwara, Yoshiharu Yabuki
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Publication number: 20020146654Abstract: A heat-developable image recording material comprises a support, a photosensitive silver halide, a non-phosensitive organic silver salt, a reducing agent for a silver ion and a binder including a polymer latex, wherein polymer latex has a halogen ion content of not more than 500 ppm.Type: ApplicationFiled: January 30, 2002Publication date: October 10, 2002Inventors: Yoshihisa Tsukada, Hajime Nakagawa, Tomokazu Yasuda
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Publication number: 20020142254Abstract: A photothermographic light-sensitive material for making a printing plate comprising a support having thereon a light-sensitive layer containing light-sensitive silver halide grains, organic silver salt grains, a reducing agent and a binder, wherein the organic silver salt grain comprises a organic silver salt having 10 or more of carbon atoms and the photothermographic light-sensitive material has an outermost layer at a light-sensitive layer side of the support having a coefficient of water absorption of not less than 0.7%.Type: ApplicationFiled: December 19, 2001Publication date: October 3, 2002Inventor: Kazuhiko Hirabayashi
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Publication number: 20020132197Abstract: An silver halide photothermographic light sensitive material comprising a support having thereon a undercoating layer and a photothermographic light-sensitive layer containing a light-sensitive silver halide, and organic silver salt, a reducing agent and a binder, wherein the undercoating layer contains fine particles having a mean primary particle size of 0.01 to 1.Type: ApplicationFiled: December 7, 2001Publication date: September 19, 2002Inventors: Yasuyuki Motokui, Kenji Ohnuma, Hidetoshi Ezure, Takayuki Sasaki, Ichiro Kudo
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Publication number: 20020123016Abstract: A photothermographic material is disclosed, comprising on a support an organic silver salt, silver halide grains, a reducing agent, a contrast-increasing agent and a binder, wherein the photothermographic material has a residual organic solvent content of 30 to 500 mg/m2 and exhibits a sensitivity maximum at a wavelength of 350 to 450 nm. An image forming method is also disclosed, comprising exposing the photothermographic material to light using a light source having emission within the wavelength region of 350 to 450 nm.Type: ApplicationFiled: December 26, 2001Publication date: September 5, 2002Inventor: Kazuhiko Hirabayashi
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Publication number: 20020119406Abstract: A silver salt photothermographic material is disclosed, comprising on a support a light-sensitive layer comprising an organic silver salt, light-sensitive silver halide grains, a reducing agent and a binder, wherein after the photothermographic material having been developed at a temperature of not less than 100° C. is subjected to exposure to light of an illumination intensity of 300 lux at 45° C. for 24 hrs., the rate of variation in fog density between before and after exposure is not more than 30%, based on the fog density of the photothermographic material before exposure.Type: ApplicationFiled: December 7, 2001Publication date: August 29, 2002Inventor: Kiyokazu Morita
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Publication number: 20020110763Abstract: A heat-developable light-sensitive material, which at least contains:Type: ApplicationFiled: November 27, 2001Publication date: August 15, 2002Inventors: Kazuhiko Matsumoto, Toshio Kawagishi
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Publication number: 20020106595Abstract: In the case where multiple slide hopper is used for simultaneous multilayer bead coating of photosensitive material, streak defect is occasionally cause, particularly in the case of coating photothermographic material, especially when the outermost layer includes materials capable of increasing optical density such as toner it more frequently happens. It is found that streak defect is restrained when meniscus curvature of upper side bead becomes less than 7.2 mm−1. This condition can be kept by selecting a proper value of clearance between the web surface and the lip of the slide hopper, that is from 0.10 mm to 0.40 mm, and a proper value of pressure in a lower side of the bead, that is from −100 Pa to −700 Pa.Type: ApplicationFiled: December 11, 2001Publication date: August 8, 2002Applicant: FUJI PHOTO FILM CO., LTD.Inventor: Akifumi Kato
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Patent number: 6426181Abstract: The present invention is directed to the use of a mixture of non-light sensitive organic silver salts in a color photothermographic system comprising a blocked developing agent for color imaging. At least one of the organic silver salts is the sole or primary silver donor during thermal development and at least one other organic silver salt, present at levels in the range of 30,000 to 60,000 mg/mol of silver halide, effectively inhibits fog during thermal development of the photothermographic element. In one embodiment, and the system comprises a mixture of at least two organic silver salts, wherein the first organic silver salts exhibits a cLogP of 0.1 to 10 and a Ksp of 7 to 14 and wherein the second organic silver salt exhibits a cLogP of 0.1 to 10 and a Ksp of 14 to 21.Type: GrantFiled: May 23, 2001Date of Patent: July 30, 2002Assignee: Eastman Kodak CompanyInventors: Lyn M. Irving, David H. Levy, Mark E. Irving
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Publication number: 20020098454Abstract: A non-photosensitive core-shell silver salt can be used in thermographic and photothermographic imaging compositions and materials. This core-shell silver salt includes one or more silver salts in the core, at least one of which is different from the one or more silver salts used in the shell. The molar ratio of the different silver salts in the core and shell is from about 0.01:1 to about 100:1.Type: ApplicationFiled: November 2, 2001Publication date: July 25, 2002Inventors: David R. Whitcomb, Oanh Pham
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Publication number: 20020098451Abstract: A photothermographic material is disclosed, comprising a support having thereon at least an image forming layer and a first layer on the opposite side of the support from the image forming layer, wherein the first layer contains a vinyl type polymer latex and an aqueous-dispersible polymer selected from the group consisting of an aqueous-dispersible polyester, aqueous-dispersible polyurethane and aqueous-disperible cellulose.Type: ApplicationFiled: September 6, 2001Publication date: July 25, 2002Inventors: Tadashi Arimoto, Takayuki Sasaki, Eiichi Ueda, Akihisa Nakajima, Chiaki Nagaike
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Patent number: 6420102Abstract: 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 film-forming acrylic or methacrylic acid ester or amide polymer(s) that has a molecular weight of at least 8000 g/mole and comprises hydroxy functionality in from about 15 to 100 mole % of the acrylic or methacrylic acid ester or amide recurring units. This barrier layer is capable of retarding diffusion of mobile chemicals such as fatty carboxylic acids, developers, and toners. This barrier layer can also include at least one other film-forming polymer to provide a clear and scratch-resistant surface.Type: GrantFiled: July 27, 2001Date of Patent: July 16, 2002Assignee: Eastman Kodak CompanyInventors: Charles L. Bauer, Michelle L. Horch, Anne M. Miller, David M. Teegarden, Bryan V. Hunt, Kumars Sakizadeh
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Publication number: 20020090582Abstract: A producing method of a fatty acid silver salt is described, which comprises adding (1) a solution of silver ions comprising water or a mixed solution of an organic solvent and water containing therein silver ions, and (2) a solution of a fatty acid alkali metal salt which is a solution or a suspension comprising water, an organic solvent, or a mixed solution of water and an organic solvent, containing therein an alkali metal salt of a fatty acid to a closed mixing means to react the solution (1) and the solution (2), wherein from 50 to 99.5 mol % of the entire fatty acid alkali metal salt solution is added to the closed mixing means under such a condition that the concentration of the fatty acid alkali metal salt is higher than the silver ion concentration, and from 0.5 to 30 mol % of the entire fatty acid alkali metal salt solution is added to the closed mixing means or to the downstream of the closed mixing means after the silver ion solution has been added to the closed mixing means.Type: ApplicationFiled: July 13, 2001Publication date: July 11, 2002Inventors: Takayoshi Oyamada, Takashi Ando
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Publication number: 20020086251Abstract: A photothermographic material comprising at least (a) a photosensitive silver halide, (b) a silver salt of an organic acid, (c) a reducing agent and (d) a hydrophobic and thermoplastic organic binder on a support, which contains a heat-fusible solvent that is solid at an ordinary temperature and can be fused at a heat development temperature. There is provided a photothermographic material showing high sensitivity, high developing speed and little performance fluctuation due to variation of heat development temperature.Type: ApplicationFiled: September 19, 2001Publication date: July 4, 2002Inventor: Kazunobu Katoh
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Publication number: 20020086252Abstract: A silver salt photothermographic material is disclosed, comprising on a support (a) a light-insensitive organic silver salt, (b) light-sensitive silver halide and (c) a reducing agent capable of reducing a silver ion of the organic silver salt to silver upon heating, wherein when the exposed and thermally processed photothermographic material having a density of 3.0 have been kept at 50° C. and 50% RH for 120 hr., the photothermographic material exhibits a variation of density from 3.0 being within ±0.2.Type: ApplicationFiled: October 16, 2001Publication date: July 4, 2002Inventor: Hideki Komatsu
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Patent number: 6413710Abstract: Photothermographic emulsions and materials that are highly sensitive to imaging radiation and that provide high contrast images are provided by making the emulsions with photosensitive silver halide grains that have been formed in the presence of a hydroxytetrazaindene or an N-heterocyclic compound comprising at least one mercapto group, such as a mercapto tetrazole. Such grains can then be chemically sensitized before or after mixing with an organic silver salt using a sulfur-, tellurium-containing, or gold-containing chemical sensitizing compound, or mixtures thereof.Type: GrantFiled: April 12, 2001Date of Patent: July 2, 2002Assignee: Eastman Kodak CompanyInventors: Steven M. Shor, Chaofeng Zou, Sharon Simpson, Stacy M. Ulrich
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Publication number: 20020081542Abstract: Disclosed is a photothermographic material containing a non-photosensitive silver salt and a photosensitive silver halide on a support, wherein the photosensitive silver halide is spectrally sensitized with a spectral sensitizing dye so that maximum spectral sensitivity wavelength could become longer than 730 nm and the conditions defined by the following formulas (1) and (2) and/or the conditions defined by the following formulas (3) and (4) could be satisfied:Type: ApplicationFiled: April 6, 2001Publication date: June 27, 2002Inventor: Takahiro Goto
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Publication number: 20020076663Abstract: A heat-developable recording material comprises a support, at least one undercoat layer and at least one image-forming layer, in this order, wherein the undercoat layer comprises: polyester resins containing at least two kinds of water-soluble and water-dispersible polyester resins, each of which has a different glass transition temperature (Tg); and fine particles having an average particle diameter (k) of from 0.1 &mgr;m to 2.0 &mgr;m, and the undercoat layer has an average film thickness (d) of from 0.05 &mgr;m to 1.0 &mgr;m, and (k)/(d) is in the range from 2.0 to 10.0.Type: ApplicationFiled: October 16, 2001Publication date: June 20, 2002Inventors: Sadao Fujikura, Hiroshi Haraoka
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Publication number: 20020068245Abstract: For achieving both advantages of high activity in heat development and superior image storability, the present invention provides a photothermographic material comprising a support having provided on one surface side thereof an image-forming layer comprising at least one kind of photosensitive silver halide, a photo-insensitive organic silver salt, a reducing agent for a silver ion and a binder having a glass transition temperature of 20° C.Type: ApplicationFiled: September 5, 2001Publication date: June 6, 2002Inventors: Yasuhiro Yoshioka, Toyohisa Oya, Sumito Yamada
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Publication number: 20020068246Abstract: A silver salt photothermographic material is disclosed, comprising a support provided thereon at least one light-sensitive layer containing an organic silver salt, light-sensitive silver halide grains and a reducing agent, wherein the surface of at least one side of the photothermographic material exhibits a coefficients of dynamic friction of 0.1 to 0.4 when being in contact with a stainless steel plate heated at a temperature of 100° C. The photothermographic material also contains solid lubricant particles.Type: ApplicationFiled: October 4, 2001Publication date: June 6, 2002Inventor: Kiyokazu Morita
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Publication number: 20020064737Abstract: A photothermographic material is described, which comprises a support having provided on at least one side thereof a photosensitive silver halide, a photo-insensitive organic silver salt, a reducing agent for silver ion and a binder, wherein at least one layer constituting the photothermographic material comprises an oxazoline compound, by which sufficiently high image density is developed within practically feasible reaction time and temperature, and sufficiently suppressed background coloration is exhibited when stored for a prolonged period after development processing.Type: ApplicationFiled: September 24, 2001Publication date: May 30, 2002Inventors: Itsuo Fujiwara, Yoshihisa Tsukada, Yasuhiro Yoshioka, Hajime Nakagawa
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Publication number: 20020061484Abstract: A process for producing an aqueous dispersion comprising: preparing a dispersion of photosensitive silver halide and a binder or a surfactant in an aqueous medium; and subsequently either (a) adding a first silver salt to the silver halide dispersion and then adding a second silver salt; or (b) adding the second silver salt to the silver halide dispersion and then adding the first silver salt, wherein the aqueous dispersion is substantially free of a water-soluble metal or ammonium salt of an aliphatic carboxylic acid with greater than 12 carbon atoms, the first silver salt is a substantially light-insensitive and substantially water-insoluble silver salt of an organic carboxylic acid, and the second silver salt has a water-solubility greater than 0.1 g in 1 L of water at 20° C.; an aqueous dispersion obtainable therewith; a photothermographic recording material prepared with the aqueous dispersion; and a process for preparing the photothermographic recording material.Type: ApplicationFiled: August 13, 2001Publication date: May 23, 2002Inventors: Herman Uytterhoeven, Johan Loccufier, Yvan Gilliams
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Patent number: 6391537Abstract: There is disclosed a nanoparticulate dispersion of a silver carboxylate particles having on the surface of the particles a surface modifier which is a nonionic oligomeric surfactant based on vinyl polymer with an amido function. In particular, the surface modifier is acrylamide, methacrylamide or derivatives thereof. Also disclosed are various compositions including the dispersions including oxidation-reduction imaging forming compositions, thermographic elements and photothermographic compositions and elements. The preferred carboxylate is a silver salt of a long chain fatty acid such as silver behenate.Type: GrantFiled: January 18, 2001Date of Patent: May 21, 2002Assignee: Eastman Kodak CompanyInventors: Mark Lelental, Alan R. Pitt, David A. Dickinson, James L. Wakley, Peter J. Ghyzel
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Publication number: 20020058217Abstract: An aqueous dispersion comprising a binder or a surfactant, a substantially light-insensitive and substantially water-insoluble organic silver salt and a photosensitive silver halide, wherein the aqueous emulsion further comprises a sensitization agent selected from the group consisting of: tin(II) bromide, aminoiminomethane sulfinic acid, water-soluble salts of H3PO3, water-soluble salts of H3PO2, water-soluble SO32− salts and water-soluble HSO3− salts; and production process for therefor and a photothermographic recording material comprising a support and a photo-addressable thermally developable element, the photo-addressable thermally developable element fulfilling two requirements: (i) the photo-addressable thermally developable element contains a substantially light-insensitive and substantially water-insoluble organic silver salt, a reducing agent for the substantially light-insensitive and substantially water-insoluble organic silver salt and in thermal working relationship therewith, a phoType: ApplicationFiled: August 23, 2001Publication date: May 16, 2002Applicant: AGFA-GEVAERTInventors: Herman Uytterhoeven, Johan Loccufier, Yvan Gilliams
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Publication number: 20020058220Abstract: A photothermographic image-recording material with improved storability before image formation and improved coating characteristics, which comprises a support having provided thereon an image-forming layer, the layer comprising at least one light-insensitive organic silver salt, a reducing agent for silver ion and a binder, wherein the binder comprises a polymer having a recurring unit represented by the formula (1), and the content of the recurring unit represented by the formula (1) in the polymer is from 0.1 to 50% by weight.Type: ApplicationFiled: September 18, 2001Publication date: May 16, 2002Inventors: Yoshihisa Tsukada, Hajime Nakagawa, Seiji Hatano, Tomokazu Yasuda
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Publication number: 20020058219Abstract: A process for preparing monosheet black and white photothermographic recording material, the photothermographic recording material being exclusive of a dye-providing compound and comprising a support and a photo-addressable thermally developable element, the photo-addressable thermally developable element being thermally developable under substantially water-free conditions and consisting of one or more layers, the layers together comprising photosensitive silver halide, a substantially light-insensitive organic silver salt, a reducing agent therefor in thermal working relationship therewith and a binder, comprising the steps of: (i) coating at least one of the one or more layers of the photo-addressable thermally developable from an aqueous medium; (ii) drying the layer or layers coated in step (i); and (iii) heating the photothermographic recording material at a temperature of at least 35° C. in the dark for a period of at least 3 days; and a photothermographic recording material obtainable therewith.Type: ApplicationFiled: August 27, 2001Publication date: May 16, 2002Applicant: AGFA-GEVAERTInventors: Herman Uytterhoeven, Luc Vissers
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Publication number: 20020058211Abstract: A photothermographic material is disclosed, comprising a support, a silver halide, an organic silver salt and a reducing agent, wherein the photothermographic material meets the following requirement:Type: ApplicationFiled: March 12, 2001Publication date: May 16, 2002Inventor: Takeshi Sampei
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Publication number: 20020058218Abstract: Disclosed are a method for preparing grains of silver salt of an organic acid by reacting a solution containing silver ions and a solution containing an alkali metal salt of an organic acid, in which the reaction is performed in sealed mixing means and which comprises steps of supplying the solution containing silver ions into a reaction field solution before introduced into the sealed mixing means, and supplying the solution containing an alkali metal salt of an organic acid into the reaction field solution or sealed mixing means to which the solution containing silver ions has been supplied, etc. According to the present invention, high quality grains of silver salt of an organic acid can be efficiently produced at low cost.Type: ApplicationFiled: June 29, 2001Publication date: May 16, 2002Applicant: FUJI PHOTO FILM CO., LTD.Inventors: Naoyuki Kawanishi, Takashi Ando, Yoichi Nagai
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Patent number: 6387611Abstract: There is disclosed an oxidation-reduction imaging forming composition comprising an aqueous based dispersion of (i) nanoparticulate silver carboxylate particles having on the surface of the particles a surface modifier which is a phosphoric acid ester and (ii) an organic reducing agent. In particular, the surface modifiers can be mixtures of mono- and di-esters of orthophosphoric acid and hydroxyl-terminated, oxyethylated long-chain alcohols or oxyethylated alkyl phenols or derivatives thereof. Also disclosed are various compositions including the dispersions including oxidation-reduction imaging forming compositions, thermographic elements and photothermographic compositions and elements. The preferred carboxylate is a silver salt of a long chain fatty acid such as silver behenate.Type: GrantFiled: January 18, 2001Date of Patent: May 14, 2002Assignee: Eastman Kodak CompanyInventors: Mark Lelental, David A. Dickinson, James L. Wakley, Michael W. Orem, Peter J. Ghyzel
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Publication number: 20020055068Abstract: In a photothermographic material having an image-forming layer and a protective layer on a support, (A) a nucleating agent having a particular structure is added to at least one of the layers formed on the image-forming layer side of the support and NH4+ content in all the layers formed on the image-forming layer side is controlled to be 0.06 mmol/m2 or less, or (B) a nucleating agent and an organic acid compound having a particular structure are added to at least one of the layers formed on the image-forming layer side so that film surface pH is substantially unchanged. This photothermographic material is characterized by low fog, high Dmax, little increase of fog during storage and little temperature and humidity dependency upon heat development.Type: ApplicationFiled: August 14, 2001Publication date: May 9, 2002Inventor: Tokuju Oikawa
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Publication number: 20020055067Abstract: The present application relates to a photothermographic material comprising, on a side of a support, (a) a photosensitive silver halide, (b) a reducible silver salt, (c) a phenol derivative having the specific structure as reducing compound, (d) a binder, (e) a coupler compound, and (f) a compound represented by Q1-NHNH-V6 wherein Q1 is a 5- to 7-membered unsaturated ring and V6 is a carbamoyl group, etc.Type: ApplicationFiled: August 3, 2001Publication date: May 9, 2002Inventors: Toyohisa Oya, Kazunobu Katoh
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Publication number: 20020055074Abstract: A preparation process for a first aqueous dispersion comprising an ex-situ photosensitive silver halide and a substantially light-insensitive silver salt of an organic carboxylic acid, comprising the steps of: separately preparing a second aqueous dispersion comprising the ex-situ photosensitive silver halide and a third aqueous dispersion comprising the substantially light-insensitive silver salt of an organic carboxylic acid; and mixing the second aqueous dispersion with the third aqueous dispersion to produce a mixture thereof, characterized in that the first aqueous dispersion thereby produced is substantially free of a water-soluble metal or ammonium salt of an aliphatic carboxylic acid with greater than 12 carbon atoms and the process further comprises a step selected from the group consisting of: increasing the pH of the second aqueous dispersion to a value of at least 8.0 prior to mixing with the third aqueous dispersion; increasing the pH of the third aqueous dispersion to a value of at least 8.Type: ApplicationFiled: August 22, 2001Publication date: May 9, 2002Applicant: AGFA-GEVAERTInventors: Herman Uytterhoeven, Luc Vissers
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Patent number: 6383731Abstract: The object of the present invention is to provides a novel polyhalogenomethylsulfonyl compound which can be used for providing a thermally processed image recording material which has a high sensitivity, gives less fog, and has a good stock stability and a good image storage stability of dark and high temperature or light storage. According to the present invention, there is provided a polyhalogenomethylsulfonyl compound represented by the following formula (1), or salts thereof, or hydrates or solvates thereof: wherein Z1 and Z2 each independently represents a halogen atom; A represents a hydrogen atom or a halogen atom; and R1 represents an alkyl group having from 2 to 12 carbon atoms, which may have one or more substituents, an alkenyl group having from 2 to 12 carbon atoms, which may have one or more substituents, or an alkinyl group having from 2 to 12 carbon atoms, which may have one or more substituents.Type: GrantFiled: August 20, 2001Date of Patent: May 7, 2002Assignee: Fuji Photo Film Co., Ltd.Inventors: Masaru Takasaki, Katsuyuki Watanabe, Hisashi Okamura
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Publication number: 20020051950Abstract: A silver halide photographic material having high sensitivity, low fog and good shelf life (i.e.Type: ApplicationFiled: April 10, 2001Publication date: May 2, 2002Inventors: Takashi Katoh, Tomoyuki Ohzeki, Katsutoshi Yamane, Takanori Hioki
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Publication number: 20020048734Abstract: The object of the invention is to provide a photothermographic material high in sensitivity and image quality, and excellent in storability in the undeveloped state, which is used for medical images or photomechanical processes.Type: ApplicationFiled: August 14, 2001Publication date: April 25, 2002Inventors: Kouta Fukui, Masaru Takasaki, Katsuyuki Watanabe
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Publication number: 20020048732Abstract: A photothermographic material comprising at least (a) a photosensitive silver halide, (b) a reducible silver salt, (c) a reducing compound represented by the following general formula (1), and (d) a binder:Type: ApplicationFiled: March 16, 2001Publication date: April 25, 2002Inventors: Toyohisa Oya, Kouta Fukui, Yasuhiro Yoshioka, Kazunobu Katoh