Mercaptan, Thioether, Thione, Disulfide Or Organic Bisulfite Patents (Class 430/611)
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Patent number: 6737228Abstract: A black-and-white silver halide photographic film material has been provided, wherein said material has first and second major surfaces, at least one of which is coated with at least one light-sensitive silver halide emulsion layer, overcoated with a protective antistress layer, wherein said emulsion layer(s) have chemically and spectrally sensitized {111} tabular hexagonal emulsion grains or crystals rich in silver bromide in an amount covering at least 50% of the total projective grain surface of all grains, wherein said grains further have an average equivalent volume diameter in the range from 0.3 &mgr;m up to 1.5 &mgr;m and an average grain thickness of less than 0.30 &mgr;m, and an average amount of iodide from 0.05 mole % up to 0.5 mole % based on silver over the whole grain volume, characterized in that said material comprises, in an amount of at least 0.Type: GrantFiled: May 16, 2002Date of Patent: May 18, 2004Assignee: AGFA-GevaertInventors: Kathy Elst, Johan Loccufier
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Patent number: 6737227Abstract: Thermally developable compositions such thermographic and photothermographic emulsions include certain heterocyclic disulfide compounds and ascorbic acid or reductone reducing agents. These compositions can be used in thermally developable materials such as thermographic and photothermographic materials to provide increased image density and shortened development time, and to allow development at lower temperatures. Such materials can have imaging layers on one or both sides of the support.Type: GrantFiled: March 7, 2003Date of Patent: May 18, 2004Assignee: Eastman Kodak CompanyInventors: Doreen C. Lynch, Stacy M. Ulrich
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Patent number: 6733959Abstract: Photothermographic materials prepared using aqueous formulations include silver halides that are chemically sensitized using certain tellurium-containing compounds. Such tellurium-containing chemical sensitizing compounds are generally provided in aqueous solution or in an aqueous solid particulate dispersion and can be represented by the following Structure I, II, or III: Te(L)m(X1)n (II) Pd(X2)2[Te(R′)2]2 (III) wherein X represents the same or different COR, CSR, CNRRa, CR, PRRa, or P(OR)2 groups, R and Ra are independently alkyl, alkenyl, or aryl groups, L is a ligand derived from a neutral Lewis base, X1 and X2 independently represent a halo, OCN, SCN, S2CNRRa, S2COR, S2CSR S2P(OR)2, S2PRRa, SeCN, TeCN, CN, SR, OR, alkyl, aryl, N3, or O2CR group, R′ is an alkyl or aryl group, p is 2 or 4, m is 0, 1, 2, or 4, and n is 2 or 4 provided that when m is 0 or 2, n is 2 or 4, and when m is 1 or 4, n is 2.Type: GrantFiled: August 6, 2001Date of Patent: May 11, 2004Assignee: Eastman Kodak CompanyInventors: Henry J. Gysling, David A. Dickinson, Mark Lelental, John W. Boettcher
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Publication number: 20040086812Abstract: 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 &mgr;m or more and a thickness of 0.15 &mgr;m or less, and (iii) composed of core portions of 0.1 &mgr;m or less thickness free of growth ring structure and composed of silver iodobromide and shell portions having ten or more dislocation lines.Type: ApplicationFiled: October 23, 2003Publication date: May 6, 2004Applicant: FUJI PHOTO FILM CO., LTD.Inventors: Masaaki Miki, Yoshiyasu Inami, Junichiro Hosokawa
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Patent number: 6727057Abstract: A heat-developable photosensitive material comprising at least one light-sensitive layer containing an organic silver salt, light-sensitive silver halide and a reducing agent and at least one light-insensitive layer on a support, wherein the heat-developable photosensitive material comprises a water-soluble metal phthalocyanine compound.Type: GrantFiled: March 31, 2003Date of Patent: April 27, 2004Assignee: Fuji Photo Film Co., Ltd.Inventors: Keiichi Suzuki, Yoshiharu Yabuki
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Patent number: 6720134Abstract: A silver halide photographic emulsion comprising grains, wherein 70% or more of the total projected area of the grains is occupied by silver halide grains each meeting requirements (a) to (d) below (a) the grain is composed of a tabular silver halide host grain having two mutually parallel main planes and aspect ratio of 2 or more, and a silver halide protrusion portion epitaxially junctioned on the surface of the host grain; (b) the silver bromide contents of both the host grain and the protrusion portion are 70 mol % or more; (c) the percentage of the silver amount in the protrusion is 12% or less of the silver amount in the host grain; and (d) the grain has a shallow electron-trapping zone.Type: GrantFiled: January 14, 2002Date of Patent: April 13, 2004Assignee: Fuji Photo Film Co., Ltd.Inventors: Yasushi Miyamoto, Toshihiro Nishikawa, Nobuyuki Haraguchi, Hideo Ikeda, Takayoshi Mori
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Patent number: 6713241Abstract: Aqueous-based thermally sensitive emulsions and imaging materials include a mixture of binders in at least one imaging layer. These binder mixtures include from 70 to about 99 weight % of hydrophilic binders such as gelatin and gelatin derivatives, and the remainder of the total binder weight is composed of one or more hydrophobic binders or water-dispersible polymer latexes. These binder mixtures are particularly useful in imaging layers of thermographic and photothermographic materials and provide long term keeping and reduced crystallization of fatty acids.Type: GrantFiled: August 9, 2002Date of Patent: March 30, 2004Assignee: Eastman Kodak CompanyInventors: Kathleen M. Vaeth, Charles L. Bauer, Jon A. Hammerschmidt, David M. Teegarden
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Publication number: 20040058281Abstract: An image forming method using a photothermographic material comprising, on at least one side of a support, at least a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent and a binder, wherein the photothermographic material: 1) having a gamma value of 2.0 to 4.0 is developed in a thermal development device configured such that a distance between an exposing section and a developing section is not more than 50 cm; 2) having a silver salt of fatty acid at an application amount of 5 mmol/m2 to 18 mmol/m2 is developed in a thermal development device configured such that a distance between an exposing section and a developing section is not more than 50 cm; 3) is discharged from a thermal development device within 35 seconds after heating for thermal development is ceased.Type: ApplicationFiled: August 21, 2003Publication date: March 25, 2004Inventors: Katsutoshi Yamane, Sumito Yamada, Eiichi Okutsu, Tomoyuki Ohzeki, Yutaka Oka
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Patent number: 6709809Abstract: A silver salt photothermographic material is disclosed, comprising at least a light sensitive layer and at least a light insensitive layer, the light sensitive layer comprising organic silver salt grains, a light sensitive emulsion containing light sensitive silver halide grains and medium, a reducing agent and a binder, wherein at least one of the light sensitive layer and the light insensitive layer contains a silver-saving agent and the photothermographic material which has been subjected to thermal development at 123° C. for 13.5 sec. exhibits an average contrast of 2.0 to 6.0 within the density range of 0.25 to 2.0 on a characteristic curve of the photothermographic material.Type: GrantFiled: June 21, 2001Date of Patent: March 23, 2004Assignee: Konica CorporationInventors: Hiroyuki Yanagisawa, Socman Ho Kimura
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Patent number: 6703191Abstract: Thermally developable compositions such thermographic and photothermographic emulsions include certain triazine-thione compounds. These emulsions can be used in thermally developable materials such as thermographic and photothermographic materials to provide increased image density and shortened development time, and to allow development at lower temperatures. Such materials can have imaging layers on one or both sides of the support.Type: GrantFiled: January 14, 2003Date of Patent: March 9, 2004Assignee: Eastman Kodak CompanyInventors: Doreen C. Lynch, Stacy M. Ulrich, Paul G. Skoug
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Publication number: 20040043341Abstract: 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: ApplicationFiled: August 13, 2003Publication date: March 4, 2004Applicant: Konica CorporationInventors: Kiyokazu Morita, Ayumu Nishijima
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Patent number: 6699652Abstract: 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 haType: GrantFiled: January 17, 2003Date of Patent: March 2, 2004Assignee: Eastman Kodak CompanyInventors: Sharon G. Johnston, Stephen P. Singer, Drake M. Michno, James A. Friday, David R. Foster
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Publication number: 20040038163Abstract: Disclosed is a photothermographic material comprising, on one side of a support, a photosensitive silver halide, a non-photosensitive silver salt of an organic acid, a reducing agent for silver ions and a binder, which is characterized by containing one or more phenol compounds as the reducing agent and one or more compounds satisfying at least one of the following requirements A and B in combination:Type: ApplicationFiled: August 19, 2003Publication date: February 26, 2004Applicant: Fuji Photo Film Co., Ltd.Inventors: Yasuhiro Yoshioka, Makoto Suzuki
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Publication number: 20040038161Abstract: The present invention provides the photothermographic material including a photosensitive silver halide, a reducing agent for reducing silver ions, a binder and a non-photosensitive organic silver salt, wherein the photosensitive silver halide has a silver iodide content ranging from 40 mol % to 100 mol %, and has a particle size ranging from 5 nm to 80 nm, and wherein the non-photosensitive organic silver salt is prepared in the presence of the photosensitive silver halide which has been preformed, such that the non-photosensitive organic silver salt includes the photosensitive silver halide.Type: ApplicationFiled: August 7, 2003Publication date: February 26, 2004Inventor: Tomoyuki Ohzeki
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Publication number: 20040033454Abstract: 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 &bgr;-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: 1Type: ApplicationFiled: August 4, 2003Publication date: February 19, 2004Inventors: Tomoyuki Ohzeki, Hiroyuki Mifune, Tadashi Inaba, Kohzaburoh Yamada, Katsuyuki Watanabe
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Publication number: 20040029056Abstract: Disclosed are a thermal recording material having a thermal recording layer containing an electron-donating dye precursor and an electron-accepting compound, wherein the thermal recording layer comprises an electron-accepting compound of the general formula (I), 1Type: ApplicationFiled: July 15, 2003Publication date: February 12, 2004Inventor: Hidetaka Tsukada
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Publication number: 20040029054Abstract: Aqueous-based thermally sensitive emulsions and imaging materials include a mixture of binders in at least one imaging layer. These binder mixtures include from 70 to about 99 weight % of hydrophilic binders such as gelatin and gelatin derivatives, and the remainder of the total binder weight is composed of one or more hydrophobic binders or water-dispersible polymer latexes. These binder mixtures are particularly useful in imaging layers of thermographic and photothermographic materials and provide long term keeping and reduced crystallization of fatty acids.Type: ApplicationFiled: August 9, 2002Publication date: February 12, 2004Applicant: Eastman Kodak CompanyInventors: Kathleen M. Vaeth, Charles L. Bauer, Jon A. Hammerschmidt, David M. Teegarden
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Patent number: 6689552Abstract: A color photographic silver halide material which can be developed to form a negative, at least 95 mol % of the silver halides of which consist of AgCl, and which contains at least one light-sensitive silver halide emulsion layer, the silver halide of which contains at least one compound of formulae (I), (II) and (III): [IrClnF6-n]2−M2+ (I) wherein n denotes 0 or an integer from 1 to 6 and M2+ denotes 1 or 2 cations with a total number of 2 positive charges, [Fe(CN)6]m−Mm+ (II) wherein m denotes 2 or 3 and Mm+ denotes 1 to 3 cations with a total number of m positive charges, wherein o denotes 0, 1 or 2 and R denotes an alkyl, aryl or aralkyl, is distinguished under scanning exposure and on analogue exposure by sharp contrast which is independent of exposure time and by a stable latent image.Type: GrantFiled: November 5, 2001Date of Patent: February 10, 2004Assignee: Agfa-GevaertInventors: Cuong Ly, Edgar Draber, Matthias Feigl, Günter Helling, Thomas Kaluschke, Michael Missfeldt, Maria Nietgen, Heinz-Horst Teitscheid, Ralf Weimann, Heinz Wiesen
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Publication number: 20040023174Abstract: 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: ApplicationFiled: April 1, 2003Publication date: February 5, 2004Inventors: Tomoyuki Ohzeki, Kohzaburoh Yamada
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Patent number: 6686115Abstract: A blue-sensitive, radiographic silver halide film comprises a silver halide emulsion layer comprising predominantly tabular silver halide grains that have an aspect ratio of at least 15, a grain thickness of at least 0.1 &mgr;M, and comprise at least 90 mol % bromide and from about 0.5 to about 2.75 mol % iodide, based on total silver halide. Substantially all of the iodide is present in an internal localized portion of the tabular silver halide grains that excludes the surface of the grains. The tabular silver halide grains are dispersed in a hydrophilic polymeric vehicle mixture comprising at least 0.5% of oxidized gelatin, based on the total dry weight of the polymeric vehicle mixture in the emulsion layer. In addition, the tabular grain emulsion includes a mercapto-substituted benzothiazole, benzoxazole, or benzimidazole to provide desired image tone and processability.Type: GrantFiled: March 26, 2003Date of Patent: February 3, 2004Assignee: Eastman Kodak CompanyInventors: Robert E. Dickerson, Richard F. Davis, Susan K. Mroczek
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Patent number: 6686143Abstract: This invention relates to a photographic element comprising a support and a silver halide emulsion layer, the emulsion layer comprising a water soluble Au(I) complex having the formula [L—Au—L]n−M+n wherein the complex is symmetrical; L is an organothiosulfonato ligand which is an antifogging, stabilizing, or sensitizing compound, n is 1 to 4, and M is a cationic counterion. This invention further relates to a silver halide photographic element comprising a support and a silver halide emulsion layer, the emulsion layer comprising an organothiosulfonato Au(I) complex having the formula [A—SO2S—Au—SSO2—A]n−M+n wherein M is a cationic counterion; A is a substituted or unsubstituted organic group; and n is 1 to 4; and wherein the compound is symmetrical. It further relates to a method of preparing a silver halide emulsion utilizing said organothiosulfonato Au(I) complexes.Type: GrantFiled: August 7, 2002Date of Patent: February 3, 2004Assignee: Eastman Kodak CompanyInventors: Roger Lok, Brian P. Cleary, Alton L. Chitty, Weimar W. White
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Publication number: 20040018458Abstract: The present invention provides a photothermographic material including a support having disposed on one surface of the support, at least one image forming layer containing a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent, a development accelerator and a binder, and at least one protective layer on the identical surface, wherein 50% by mass or more of the binder contained in the image forming layer is a water soluble binder, and the reducing agent is contained in the form of a solid dispersion.Type: ApplicationFiled: May 15, 2003Publication date: January 29, 2004Inventor: Hajime Nakagawa
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Patent number: 6682878Abstract: A thermal development photosensitive material suitable for medical diagnoses, industrial photography, printing and COM. The material contains at least one photosensitive silver halide, a non-photosensitive organic silver salt, a binder, at least one of compounds represented by the following formula (I) and at least one of compounds represented by the following formula (II) on one surface of a substrate. The material has high sensitivity and provides an image with a tone close to a pure black tone.Type: GrantFiled: December 5, 2001Date of Patent: January 27, 2004Assignee: Fuji Photo Film Co., Ltd.Inventors: Kouta Fukui, Yasuhiro Yoshioka
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Publication number: 20040013984Abstract: Organic solvent-based photothermographic materials comprise one or more mercaptotriazoles represented by the following Structure I as toner(s): 1Type: ApplicationFiled: July 11, 2002Publication date: January 22, 2004Applicant: Eastman Kodak CompanyInventors: Doreen C. Lynch, Stacy M. Ulrich, Chaofeng Zou
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Publication number: 20040005521Abstract: A silver salt photothermographic material exhibiting enhanced image quality and superior uniformity without causing uneven density is disclosed, comprising on a support a light-sensitive layer comprising a light-sensitive emulsion containing organic silver salt grains and light-sensitive silver halide grains, a reducing agent and a binder and a conductive layer, wherein the conductive layer contains at least one of compounds represented by the following general formulas: 1 (Rf2)—(A2)s LiO3S—(CF2)m—SO3Li MO3S—(CF2)t—SO3M L[O3S—(CF2)u—SO3]Type: ApplicationFiled: June 10, 2003Publication date: January 8, 2004Inventor: Shinji Kudo
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Publication number: 20030224309Abstract: A silver halide photosensitive material comprises at least one light sensitive silver halide emulsion layer on a support. The silver halide photosensitive material contains at least one compound capable of undergoing a one-electron oxidation to thereby form a one-electron oxidation product thereof, the one-electron oxidation product being capable of releasing further one or more electrons, and at least one reducing compound having a C/H value of 3 or less, and another reducing compound having a C/H value of more than 3, the C/H value representing a ratio of (the number of Group IV elements)/(the sum of Groups III, V, VI and VII elements).Type: ApplicationFiled: March 10, 2003Publication date: December 4, 2003Applicant: FUJI PHOTO FILM CO., LTD.Inventors: Naoki Asanuma, Kohzaburoh Yamada, Yasuhiro Shimada
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Patent number: 6649334Abstract: A silver halide photographic emulsion wherein a variation coefficient of an equivalent-circle diameter of all the silver halide grains is 40% or less, and 50% or more of the total projected area is occupied by tabular grains satisfying requirements (i) to (v): (i) silver iodobromide having (111) faces as principal surfaces; (ii) the equivalent-sphere diameter of 0.5 &mgr;m or less, a thickness of 0.20 &mgr;m or less, and an average aspect ratio of 3 or more; (iii) a silver iodide content of 2 mol % or more and 6 mol % or less; (iv) a multiple-structure having a quintuple structure or more in which a silver iodide distribution has at least two maximums from a center to an edge, the first maximum is in a range of 3 to 25% by a silver amount constituting grains, and the second maximum is in a range of 50 to 80%; and (v) ten or more of dislocation lines per grain are present at a fringe portion.Type: GrantFiled: January 18, 2002Date of Patent: November 18, 2003Assignee: Fuji Photo Film Co., Ltd.Inventor: Hideo Ikeda
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Publication number: 20030203322Abstract: The present invention provides a spectrally sensitized photothermographic silver halide element support having a first surface and a second surface, a photothermographic composition that is to be exposed to a laser being disposed on the first surface of the support. The element has at least one back layer disposed on the second surface of the support. The photothermographic composition comprises silver halide emulsion grains having a number average grain size of less than 0.1 &mgr;m and that are spectrally sensitized with a sensitizing dye having a spectral sensitivity that corresponds to the spectral properties of the laser. The photothermographic composition further comprises an organic silver salt, a reducing agent for silver ions, and at least one dye. In addition, the photothermographic composition has a transmission optical density greater than 0.1 at the exposure wavelength, and the back layer has a transmission optical density greater than 0.1 at the exposure wavelength.Type: ApplicationFiled: December 23, 2002Publication date: October 30, 2003Applicant: Eastman Kodak CompanyInventors: Thomas C. Geisler, Thomas J. Kub, Darlene F. Stewart, Mark C. Skinner, Bryan V. Hunt
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Publication number: 20030203329Abstract: A silver halide photosensitive material containing a compound selected from Types 1-4 below which is capable of undergoing a one-electron oxidation to form a one-electron oxidation product (OEOP), and a reducing compound (Type 1) the OEOP is capable of releasing further two or more electrons accompanying a subsequent bond cleavage reaction, (Type 2) the OEOP is capable of releasing further one electron accompanying a subsequent bond cleavage reaction, and the compound having, in its molecule, two or more groups adsorptive to silver halide, (Type 3) the OEOP is capable of releasing further one or more electrons after going through a subsequent bond forming process, and (Type 4) the OEOP is capable of releasing further one or more electrons after going through a subsequent intramolecular ring cleavage reaction.Type: ApplicationFiled: February 7, 2003Publication date: October 30, 2003Applicant: Fuji Photo Film Co., Ltd.Inventors: Kohzaburoh Yamada, Naoki Asanuma
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Patent number: 6638708Abstract: The present disclosure relates to dispersions of silver (carboxylate-n-alkyl thiolate). The carboxylates are typically silver salts of long chain fatty acids and the n-alkyl thiolate is preferably 1-dodecanethiol. These silver (carboxylate-n-alkyl thiolate) particles can be used to formulate imaging forming compositions that are useful in aqueous thermographic or photothermographic imaging elements.Type: GrantFiled: July 22, 2002Date of Patent: October 28, 2003Assignee: Eastman Kodak CompanyInventors: Peter J. Ghyzel, Mark Lelental, David A. Dickinson, Alan R. Pitt, Trevor J. Wear
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Publication number: 20030198905Abstract: A silver halide color photosensitive material has at least one blue-sensitive silver halide emulsion layer containing a yellow coupler, at least one green-sensitive silver halide emulsion layer containing a magenta coupler, at least one red-sensitive silver halide emulsion layer containing a cyan coupler, and at least one non-lightsensitive layer, on a support. The photosensitive material contains, in at least one of the layers, a compound having a reducing group and a compound having at least three hetero atoms capable of increasing a photographic speed of the photosensitive material in comparison with the case where the material does not contain the same.Type: ApplicationFiled: November 19, 2002Publication date: October 23, 2003Applicant: FUJI PHOTO FILM CO., LTD.Inventors: Junichiro Hosokawa, Kohzaburoh Yamada, Yasuhiro Shimada
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Patent number: 6635413Abstract: A process for producing a lightsensitive silver halide emulsion comprising silver halide grains, wherein the emulsion contains tabular silver halide grains in an amount of at least 50% of the total projected area of all the silver halide grains, the average iodine content of all the silver halide grains is at least 2 mol %, and the tabular silver halide grains have at least 10 dislocation lines per grain, wherein the process comprises (step 1) set fourth below, and the process comprises a step of performing chemical sensitization so that a selenium sensitizer is added in an amount of 2.Type: GrantFiled: March 8, 2000Date of Patent: October 21, 2003Assignee: Fuji Photo Film Co., Ltd.Inventors: Yoshiyasu Inami, Hirotomo Sasaki, Hiroshi Takeuchi, Shunichi Aida
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Publication number: 20030190565Abstract: A heat developable image recording material including a photosensitive silver halide, a reducing agent for silver ions, a binder and non-photosensitive organic acid silver salt particles on one side of the surface of a substrate. A content of silver behenate in the non-photosensitive organic acid silver salt particles is 90 mol % to 100 mol %, and at least one kind of mercapto compound is contained in a surface of the substrate at the same side as a layer having the photosensitive silver halide. The heat developable image recording material includes a compound represented by following the general formula (1) wherein, R21, R22 and R23 each independently represent a substituted or non-substituted alkyl group. When R21, R22 or R23 have a substituent, the substituent is a halogen atom etc. The non-photosensitive organic particles are prepared from organic acids including at least behenic acid and erucic acid, and a content of the erucic acid is 0.000001 mol % to 0.4 mol %.Type: ApplicationFiled: October 24, 2002Publication date: October 9, 2003Inventors: Itsuo Fujiwara, Seiichi Yamamoto, Takayoshi Oyamada
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Patent number: 6627375Abstract: A silver halide photographic material is disclosed, comprising a support having provided thereon at least a silver halide emulsion layer, which contains at least one compound represented by the following formula (I), and has a characteristic curve of gamma value being 5.0 or more in optical density of from 0.3 to 3.0 on the characteristic curve shown on the orthogonal axis of coordinates having equal unit length expressed by logarithmic exposure amount (x axis) and optical density (y axis): (X)l—(L)m—(A—B)n (I) wherein X represents a silver halide-adsorptive group having at least one of N, S, P, Se and Te atom, or a light absorptive group; L represents a divalent linking group having at least one of C, N, S and O atom; A represents an electron donative group; B represents a releasing group or a hydrogen atom, which forms radical A. by releasing or deproton after oxidation; l and m each represents an integer of from 0 to 3; and n represents 1 or 2.Type: GrantFiled: December 21, 2001Date of Patent: September 30, 2003Assignee: Fuji Photo Film Co., Ltd.Inventor: Shoji Yasuda
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Patent number: 6620577Abstract: Photothermographic imaging materials having increased photospeed are provided by certain selenium chemical sensitizers that are added during the formulation of a photothermographic emulsion. These selenium chemical sensitizers can be used alone or in combination with other sulfur, tellurium, or gold chemical sensitizers as well as with oxidatively decomposed sulfur-containing compounds.Type: GrantFiled: February 25, 2002Date of Patent: September 16, 2003Assignee: Eastman Kodak CompanyInventors: Doreen C. Lynch, Andrea L. Opatz, Henry J. Gysling, Sharon M. Simpson
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Publication number: 20030162134Abstract: A photothermographic material that comprises a support having thereon one or more thermally-developable imaging layers comprising a binder and in reactive association, a photosensitive silver halide, a non-photosensitive source of reducible silver ions, and a reducing composition for the non-photosensitive source reducible silver ions. The thermally-developable layers further comprises one or more radiation absorbing compounds that provide a total absorbance of greater than 0.6 and up to and including 3 in the thermally-developable imaging layer(s). These photothermographic materials exhibit reduced mottle without significant loss in sensitivity.Type: ApplicationFiled: December 5, 2001Publication date: August 28, 2003Applicant: Eastman Kodak CompanyInventors: Bryan V. Hunt, Steven H. Kong, William D. Ramsden, Gary E. Labelle
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Publication number: 20030157447Abstract: A silver halide photographic light-sensitive emulsion comprising a silver halide and a compound represented by the following Formula (I): 1Type: ApplicationFiled: July 19, 2002Publication date: August 21, 2003Inventors: Tatsuo Tanaka, Nobuaki Kagawa, Yoshiko Iwai, Tomohiro Oshiyama
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Patent number: 6605418Abstract: Thermally developable compositions such thermographic and photothermographic emulsions include certain quaternary phthalazine compounds. These emulsions can be used in thermally developable materials such as thermographic and photothermographic materials to provide improved sensitometric and post processing properties. Such materials can have imaging layers on one or both sides of the support.Type: GrantFiled: October 28, 2002Date of Patent: August 12, 2003Assignee: Eastman Kodak CompanyInventors: William D. Ramsden, Chaofeng Zou
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Publication number: 20030138738Abstract: A photothermographic material that comprises a support having thereon one or more thermally-developable imaging layers comprising a binder and in reactive association, a photosensitive silver halide, a non-photosensitive source of reducible silver ions, and a reducing composition for the non-photosensitive source reducible silver ions. The thermally-developable layers further comprises one or more radiation absorbing compounds that provide a total absorbance of greater than 0.6 and up to and including 3 in the thermally-developable imaging layer(s). These photothermographic materials are independently coated and dried while the material is conveyed at a rate of at least meters per minute.Type: ApplicationFiled: December 5, 2001Publication date: July 24, 2003Applicant: Eastman Kodak CompanyInventors: Bryan V. Hunt, Steven H. Kong, William D. Ramsden, Gary E. Labelle
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Patent number: 6593075Abstract: A silver halide photographic light-sensitive material having at least one emulsion layer comprising silver halide grains, with the emulsion layer further comprising at least one compound represented by the following formula (I) and at least one compound represented by the following formula (II), (III), (IV-1), (IV-2), (V-1), (V-2), (V-3) or (VI): (X&Parenclosest;1&Parenopenst;L&Parenclosest;m&Parenopenst;A—B)n (I) (Het&Parenclosest;k1&Brketopenst;&Parenopenst;Q1&Parenclosest;k2&Parenopenst;Hy)]k3 (III) wherein the substituents as defined herein the specification.Type: GrantFiled: July 24, 2000Date of Patent: July 15, 2003Assignee: Fuji Photo Film Co., Ltd.Inventors: Shinichi Ichikawa, Takeshi Suzumoto, Kohzaburoh Yamada, Tadashi Inaba
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Patent number: 6593073Abstract: A silver halide photographic element comprises at least one silver halide emulsion layer comprising a silver halide emulsion comprising core/shell silver halide grains wherein the core region comprises silver bromide with from about 5 to about 20% silver iodide and the shell region comprises silver bromide with about 0.1 to about 10% silver iodide and said layer contains a fragmentable electron donor compound of the formula X—Y′ or a compound which contains a moiety of the formula —X—Y′; wherein X is an electron donor moiety, Y′ is a leaving proton H or a leaving group Y, with the proviso that if Y′ is a proton, a base, &bgr;−, is covalently linked directly or indirectly to X, and wherein: 1) X—Y′ has an oxidation potential between 0 and about 1.Type: GrantFiled: December 20, 1999Date of Patent: July 15, 2003Assignee: Eastman Kodak CompanyInventors: Jon N. Eikenberry, Yun C. Chang
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Publication number: 20030118952Abstract: 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 photosensitivity 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):Type: ApplicationFiled: May 23, 2002Publication date: June 26, 2003Applicant: FUJI PHOTO FILM CO., LTD.Inventors: Kiyoteru Miyake, Masahiro Asami
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Patent number: 6566043Abstract: The present invention is to provide a silver halide photographic light-sensitive material comprising a support having thereon a light-sensitive silver halide emulsion layer comprising a compound represented by Formula, Formula 1 Z—S—X wherein Z represents a group represented by Formula 1-2; X represents a hydrogen atom or Z—S—, wherein A1, A2, A3, A4, and A5 each represent ═N—, ═N(→O)—, or ═CR91—, in which R91 represents a substituent, and at least two of A1, A2, A3, A4, and A5 are respectively ═N(→O)— and ═CR91—.Type: GrantFiled: August 30, 2001Date of Patent: May 20, 2003Assignee: Konica CorporationInventors: Emiko Kataoka, Nobuaki Kagawa, Tatsuo Tanaka
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Patent number: 6558894Abstract: A photothermographic material comprising, on one surface of a support, at least one kind of photosensitive silver halide, a silver salt of an organic acid, a reducing agent for silver ions, and a binder, wherein (1) said material further comprises two or more kinds of organic polyhalogenated compounds, and (2) a melting point of a mixture which consists of the organic polyhalogenated compounds in the same content ratio as the content ratio of said compounds in the photothermographic material is in the range of from −10° C. to 50° C. relative to a heat development temperature for the photothermographic material. The photothermographic material of the present invention shows high sensitivity and superior storability before heat development, and the material can be used for medical images, photoengraving and the like.Type: GrantFiled: January 11, 2001Date of Patent: May 6, 2003Assignee: Fuji Photo Film Co., Ltd.Inventor: Kouta Fukui
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Publication number: 20030068592Abstract: A silver halide photographic emulsion comprising grains, wherein 70% or more of the total projected area of the grains is occupied by silver halide grains each meeting requirements (a) to (d) belowType: ApplicationFiled: January 14, 2002Publication date: April 10, 2003Applicant: FUJI PHOTO FILM CO., LTD.Inventors: Yasushi Miyamoto, Toshihiro Nishikawa, Nobuyuki Haraguchi, Hideo Ikeda, Takayoshi Mori
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Patent number: 6534226Abstract: This invention comprises an imaging element comprising an imaging layer having associated therewith a compound of Structure I: In the above Structure I, the substituents are as defined in the application. Such compounds have good reactivity and can by used to block photographically useful compounds such as developing agents until thermally activated under preselected conditions. Compounds according to the present invention are especially useful in color photothermographic imaging elements.Type: GrantFiled: November 20, 2000Date of Patent: March 18, 2003Assignee: Eastman Kodak CompanyInventors: Zbyslaw R. Owczarczyk, David T. Southby, Xiqiang Yang
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Patent number: 6514678Abstract: Aqueous-based photothermographic materials have improved stability to increase in Dmin during aging by including certain water-soluble or water-dispersible antifoggants that have a pKa of 8 or less. These antifoggants are represented by Structure I: R1—SO2—C(R2)R3—(CO)m—(L)n—SG I wherein R1 is an aliphatic or cyclic group, R2 and R3 are independently hydrogen or bromine as long as at least one of them is bromine, L is an aliphatic divalent linking group, m and n are independently 0 or 1, and SG is a solubilizing group having a pKa of 8 or less.Type: GrantFiled: December 11, 2001Date of Patent: February 4, 2003Assignee: Eastman Kodak CompanyInventors: George J. Burgmaier, Roger L. Klaus
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Patent number: 6514683Abstract: This invention comprises a photographic element comprising at least one light-sensitive silver halide emulsion layer containing a fragmentable electron donating compound of the formula: X—Y′ or a compound which contains a moiety of the formula —X—Y′; wherein X is an electron donor moiety, Y′ is a leaving proton H or a leaving group Y, with the proviso that if Y′ is a proton, a base, &bgr;−, is present in the emulsion layer, and wherein: 1) X—Y′ has an oxidation potential between 0 and about 1.4 V; and 2) the oxidized form of X—Y′ undergoes a bond cleavage reaction to give the radical X• and the leaving fragment Y′; and 3) the radical X• has an oxidation potential ≦−0.Type: GrantFiled: January 5, 2001Date of Patent: February 4, 2003Assignee: Eastman Kodak CompanyInventors: Annabel A. Muenter, Steven P. Szatynski, Sharon G. Johnston
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Patent number: 6506548Abstract: This invention relates to a silver halide photographic element comprising at least one silver halide emulsion layer and further comprising an antifoggant represented by the following Structure I: wherein R1 is an aliphatic or cyclic group, R2 and R3 are independently hydrogen or bromine as long as at least one of them is bromine, L is a divalent linking group, m and n are independently 0 or 1, and SG is a solubilizing group that has a pKa of 8 or less.Type: GrantFiled: December 11, 2001Date of Patent: January 14, 2003Assignee: Eastman Kodak CompanyInventors: Roger L. Klaus, George J. Burgmaier, Jon N. Eikenberry, Jerzy Z. Mydlarz, Nicholas E. Grzeskowiak
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Publication number: 20030008249Abstract: A silver halide photographic emulsion wherein a variation coefficient of an equivalent-circle diameter of all the silver halide grains is 40% or less, and 50% or more of the total projected area is occupied by tabular grains satisfying requirements (i) to (v):Type: ApplicationFiled: January 18, 2002Publication date: January 9, 2003Applicant: FUJI PHOTO FILM CO., LTD.Inventor: Hideo Ikeda