Silver Halide Colloid Tanning Process, Composition, Or Product Patents (Class 430/264)
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Patent number: 6114081Abstract: There is disclosed a silver halide photographic light-sensitive material comprising a support having thereon at least one of spectrally sensitized light-sensitive silver halide emulsion layers, wherein at least one of the silver halide emulsion layers contains at least two kinds of silver halide emulsions, at least one kind of the emulsions being one in which silver halide grains have been formed and grown in the presence of at least one of nitrogen-containing heterocyclic compounds that are capable of forming a complex with silver; and at least one kind of the emulsions being one in which silver halide grains have been formed and grown in the absence of nitrogen-containing heterocyclic compounds that are capable of forming a complex with silver, and wherein at least one of the said emulsion layers or another hydrophilic colloid layer contains at least one hydrazine derivative nucleating agent, and also at least one nucleating accelerator selected from a group consisting of amine derivatives, onium salts, disType: GrantFiled: September 17, 1999Date of Patent: September 5, 2000Assignee: Fuji Photo Film Co., Ltd.Inventor: Tokuju Oikawa
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Patent number: 6100022Abstract: In a photothermographic element comprising a non-photosensitive silver salt, a photosensitive silver halide, and a binder on a support, a latex of a polymer having a Tg of -30.degree. C. to 40.degree. C. constitutes at least 50% by weight of the binder in an image forming layer containing the silver halide, and the image forming layer or a layer disposed adjacent thereto or both contain a nucleating agent. The element on the image forming layer side has a film surface pH of 5.0-7.0. The element produces a low fog, ultrahigh contrast image and maintains ultrahigh contrast characteristics with a wide latitude under varying development conditions.Type: GrantFiled: March 17, 1999Date of Patent: August 8, 2000Assignee: Fuji Photo Film Co., Ltd.Inventors: Nobuaki Inoue, Takahiro Goto
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Patent number: 6090538Abstract: A heat developable light-sensitive material comprising an organic acid silver and silver halide, which contains a compound represented by the following formula (A) and a hydrazine derivative: ##STR1## wherein R represents a hydrogen atom or an alkyl group having from 1 to 10 carbon atoms and R' and R" each represents an alkyl group having from 1 to 5 carbon atoms.Type: GrantFiled: August 15, 1996Date of Patent: July 18, 2000Assignee: Fuji Photo Film Co., Ltd.Inventors: Tsutomu Arai, Toshiaki Kubo, Minoru Sakai, Kohzaburoh Yamada, Kazunobu Katoh
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Patent number: 6087086Abstract: A thermographic recording element having at least one image forming layer contains an organic silver salt, a reducing agent, and a ballast group-bearing alkene compound. The element has high Dmax, high sensitivity, satisfactory contrast and minimized black pepper.Type: GrantFiled: September 30, 1998Date of Patent: July 11, 2000Assignee: Fuji Photo Film Co., Ltd.Inventors: Hiroyuki Suzuki, Toshihide Ezoe, Kohzaburoh Yamada
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Patent number: 6083680Abstract: A photothermographic material for a photomechanical process which is high in sensitivity and high in contrast and can provide an image low in Dmin by UV light, comprising a support having provided thereon a light-insensitive organic silver salt, a light-sensitive silver halide formed independently of the light-insensitive organic silver salt, and a binder, wherein the main binder of an image formation layer containing the light-sensitive silver halide is a polymer latex having a glass transition-temperature of 40.degree. C. or less, said image formation layer is formed by applying a coating solution in which 60% by weight or more of a solvent is water, and the light-sensitive silver halide is gold-sensitized silver halide grains having a silver chloride content of 80 mol % or more per silver halide.Type: GrantFiled: August 14, 1998Date of Patent: July 4, 2000Assignee: Fuji Photo Film Co., Ltd.Inventors: Tadashi Ito, Kazuki Yamazaki
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Patent number: 6074799Abstract: A silver halide photographic material comprising a support having thereon at least one photosensitive silver halide emulsion layer, wherein at least one of the silver halide emulsion layer and other hydrophilic colloid layers comprises at least one hydrazine compound represented by the following general formula (II) in the form of fine solid dispersion:A--(B).sub.m (II)wherein A represents a connecting group; B represents a group represented by the following general formula (III); and m represents an integer of from 2 to 6:--(L.sub.2 --Ar.sub.2).sub.n --L.sub.1 --Ar.sub.1 --NHNH--G.sub.1 --R.sub.1(III)wherein Ar.sub.1 and Ar.sub.2 each represents an aromatic group or an aromatic heterocyclic group; L.sub.1 and L.sub.2 each represents a connecting group; n represents an integer of 0 or 1; R.sub.1 represents a hydrogen atom, an alkyl group, an aryl group, a heterocyclic group, an alkoxy group, an aryloxy group, an amino group or a hydrazino group; and G.sub.1 represents a --CO-- group, an --SO.sub.Type: GrantFiled: October 23, 1998Date of Patent: June 13, 2000Assignee: Fuji Photo Film Co., Ltd.Inventors: Toshihide Ezoe, Kohzaburoh Yamada
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Patent number: 6066444Abstract: A silver halide light sensitive photographic material is disclosed, comprising a support having thereon one or plural photographic component layers, wherein at least a photographic component layer contains a lanthanoid triflate compound represented by the following formula:Ln--(CF.sub.3 SO.sub.3).sub.3where Ln represents a rare earth element.Type: GrantFiled: June 9, 1999Date of Patent: May 23, 2000Assignee: Konica CorporationInventor: Akio Fujita
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Patent number: 6063560Abstract: In a photographic photothermographic material comprising a organic silver salt, a silver halide, and a reducing agent on a transparent support, a specific hydrazine derivative and a specific squarylium dye are contained in suitable photosensitive or non-photosensitive layers on the support. The material is improved in Dmax, contrast, resolution, and residual color after processing.Type: GrantFiled: October 1, 1997Date of Patent: May 16, 2000Assignee: Fuji Photo Film Co., LtdInventors: Keiichi Suzuki, Toru Harada
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Patent number: 6063541Abstract: This subject invention relates to novel hydrazide compounds useful as dot-promoting agents in photographic image systems, methods for making them, and to photographic materials which comprise these compounds.Type: GrantFiled: January 3, 1997Date of Patent: May 16, 2000Assignee: Kodak Polychrome Graphics LLCInventors: Richmond C. Watson, Albert B. Levit, Rolf S. Gabrielsen, Bruce M. Resnick
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Patent number: 6057086Abstract: A silver halide color photographic material is disclosed, comprising a support having thereon photographic constituent layers containing at least one light-sensitive silver halide emulsion layer, wherein any one of the photographic constituent layers contains at least one coupler for dye formation, at least one reducing agent for color formation represented by the following formula (I) and an auxiliary developing agent and/or a precursor thereof:R.sup.11 --NH--NH--X--R.sup.12 (I)wherein R.sup.11 represents an aryl or heterocyclic group, R.sup.12 represents an alkyl, alkenyl, alkynyl, aryl or heterocyclic group, and X represents --SO.sub.2 --, --CO--, --COCO--, --CO--O--, --CO-- N(R.sup.13)--, --COCO--O--, --COCO--N(R.sup.13)-- or --SO.sub.2 --N(R.sup.13)-- (wherein R.sup.13 represents a hydrogen atom or a group described for R.sup.12).Type: GrantFiled: November 25, 1997Date of Patent: May 2, 2000Assignee: Fuji Photo Film Co., Ltd.Inventors: Koichi Nakamura, Kiyoshi Takeuchi, Koki Nakamura
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Patent number: 6040036Abstract: The invention relates to a photographic element comprising a paper base with a thickness from 0.025 mm to 0.25 mm, at least one photosensitive silver halide layer, and a layer of microvoided and biaxially oriented polyolefin sheet having a layer thickness of 0.020 mm to 0.050 mm, a density of between 78% and 100% of the solid polymer density located between said paper base and said at least one photosensitive silver halide layer, and wherein the entire photographic element is substantially free from surface distortion or cracking when the photographic element is forced to the shape of a diameter of no less than 8.0 mm.Type: GrantFiled: May 11, 1999Date of Patent: March 21, 2000Assignee: Eastman Kodak CompanyInventors: Peter T. Aylward, Robert P. Bourdelais, Douglas N. Haydock, Thaddeus S. Gula
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Patent number: 6033825Abstract: Photographic silver-halide materials for producing negative images with ultrahard-gradation contrast, which contain a hydrazine compound and a contrast-boosting amino compound and/or phosphonium compound, demonstrate a marked tendency to form "black fog" which results in inadequate acutance. By adding 200 to 2500 mg per mol of silver of a polyvinyl lactam to the emulsion, the fog is inhibited and acutance is improved without reducing sensitivity. The invention can be used to produce images during reproduction in the pre-printing stage.Type: GrantFiled: October 29, 1998Date of Patent: March 7, 2000Assignee: Agfa-Gevaert NVInventors: Reinhold Ruger, Fran.cedilla.ois Varescon
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Patent number: 6030744Abstract: Photographic silver-halide materials for producing negatives with ultrahard-gradation gamma contrast, which contain a hydrazine compound and a contrast-boosting amino compound and/or phosphonium compound, demonstrate an undesirable increase in fog during storage. By adding a sulphite salt to the emulsion, storage-stable materials are obtained in which sensitivity and contrast are increased. The invention can be used to produce images during reproduction in the pre-printing stage.Type: GrantFiled: October 29, 1998Date of Patent: February 29, 2000Assignee: Agfa-Gevaert NVInventors: Reinhold Ruger, Fran.cedilla.ois Varescon
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Patent number: 6027871Abstract: A photothermographic material is prepared by preparing an aqueous dispersion of a thermoplastic resin, adding an organic silver salt and a silver halide to the aqueous dispersion, further adding a ultrahigh contrast promoting agent to the aqueous dispersion to form an aqueous coating solution, applying the aqueous coating solution to a support, and heat drying the coating. Since the use of an aqueous dispersion enables the use of a polycarbonate support which originally has good dimensional stability to heat, a photosensitive material having good dimensional stability is manufactured in high yields.Type: GrantFiled: April 14, 1997Date of Patent: February 22, 2000Assignee: Fuji Photo Film Co., Ltd.Inventor: Kazunobu Katoh
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Patent number: 6025122Abstract: A heat developable photographic material comprising a reducible silver salt, a reducing agent, a contrast enhancer, and a binder further contains a thiosulfonic acid ester compound and/or a thiosulfonic acid compound. The material exhibits ultrahigh contrast and low fog and is minimized in the variation of photographic characteristics with heat development conditions.Type: GrantFiled: April 2, 1998Date of Patent: February 15, 2000Assignee: Fuji Photo Film Co., Ltd.Inventors: Minoru Sakai, Shigeo Hirano, Katsuyuki Watanabe
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Patent number: 6022942Abstract: There is provided herein an optical storage media which has low VBR. In a preferred embodiment, there is provided an optical disk comprising a genus of copolycarbonates, including copolyestercarbonates, which have excellent physical and optical properties. Said copolycarbonates have proportions of structural units which fall within a specific composition range, and said range defines certain materials, a large percentage of which can be molded into optical disks having the desired optical properties, including low VBR.Type: GrantFiled: January 5, 1999Date of Patent: February 8, 2000Assignee: General Electric CompanyInventors: Kenichi Ishiwa, Henricus H. M. van Hout, Ali Dhinojwala, Niles R. Rosenquist, Paul D. Sybert, Steven F. Hubbard, Paul C. Raymond, III, Joseph A. King, Jr., Gary C. Davis
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Patent number: 6017674Abstract: A silver halide photographic material comprising a support having thereon at least one photosensitive silver halide emulsion layer, wherein at least one of the silver halide emulsion layer and other hydrophilic colloid layers comprises at least one hydrazine compound represented by the following general formula (II) in the form of fine solid dispersion:A--(B).sub.m (II)wherein A represents a connecting group; B represents a group represented by the following general formula (III); and m represents an integer of from 2 to 6:--(L.sub.2 --Ar.sub.2).sub.n --L.sub.1 --Ar.sub.1 --NHNH--G.sub.1 --R.sub.1(III)wherein Ar.sub.1 and Ar.sub.2 each represents an aromatic group or an aromatic heterocyclic group; L.sub.1 and L.sub.2 each represents a connecting group; n represents an integer of 0 or 1; R.sub.1 represents a hydrogen atom, an alkyl group, an aryl group, a heterocyclic group, an alkoxy group, an aryloxy group, an amino group or a hydrazino group; and G.sub.1 represents a --CO-- group, an --SO.sub.Type: GrantFiled: January 21, 1997Date of Patent: January 25, 2000Assignee: Fuji Photo Film Co., Ltd.Inventors: Toshihide Ezoe, Kohzaburoh Yamada
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Patent number: 6013410Abstract: A silver halide photographic light-sensitive material is disclosed. The light-sensitive material comprises a support having thereon a subbing layer having a glass transition point Tg of 40.degree. C. to 200.degree. C. which comprises a hydrophobic resin, and a silver halide emulsion layer and optionally a non-light-sensitive hydrophilic colloid layer provided on the subbing layer, and at least one of the silver halide emulsion layer and the non-light-sensitive hydrophilic colloid layer contains an inorganic colloidal particle or a composite latex comprising an inorganic particle and a hydrophobic resin in an amount of 0.1 g/m.sup.2 to 2.0 g/m.sup.2 of in total.Type: GrantFiled: March 13, 1998Date of Patent: January 11, 2000Assignee: Konica CorporationInventor: Takeo Arai
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Patent number: 6013421Abstract: There is disclosed a silver halide photographic light-sensitive material containing a color-developing agent of formula (I) and a coupler of formula (II), in at least one photographic constitutional layer: ##STR1## In formula (I), Z is a carbamoyl, acyl, alkoxycarbonyl, or aryloxycarbonyl group, and Q is a group of atoms that, together with the C, form an unsaturated ring. In formula (II), Cp is a coupler residue, Time is a group that releases PUG upon released from Cp by coupling reaction, PUG is a photographically useful group, and t is 0, 1, 2, or 3. There is also disclosed a silver halide photographic light-sensitive material containing a color-developing agent of formula (I), a dye-forming coupler, and a non-dye-forming coupler (that is unsubstituted on its active site), in at least one photographic constitutional layer. There is further disclosed methods for forming an image using the light-sensitive materials.Type: GrantFiled: July 18, 1997Date of Patent: January 11, 2000Assignee: Fuji Photo Film Co., Ltd.Inventors: Koki Nakamura, Kazuhiko Matsumoto
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Patent number: 6010843Abstract: A photothermographic recording material comprising a support and a photo-addressable thermally developable element containing a substantially light-insensitive organic silver salt, a reducing agent therefor in thermal working relationship therewith, photosensitive silver halide spectrally sensitized with a dye and in catalytic association with the substantially light-insensitive organic silver salt and a binder, wherein the photo-addressable thermally developable element further includes a hydrazine compound represented by the formula (I): ##STR1## wherein: Z represents the necessary atoms to close a heterocyclic ring which is either a five-membered ring containing at least two heteroatoms or a six-membered ring, which ring may carry one or more fused-on rings, and which ring must contain a C--H bond permitting oxidative aromatisation to an acyl-onium group by means of a hydride shift or a consecutive 2-electron-proton transfer; each of R.sup.1 and R.sup.Type: GrantFiled: July 8, 1997Date of Patent: January 4, 2000Assignee: Agfa-Gevaert N.V.Inventors: Ivan Hoogmartens, Hans Strijckers, David Terrell
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Patent number: 5998087Abstract: A silver halide photographic material is disclosed containing a new type of hydrazide compounds represented by following general formula I, the different symbols of which are defined in the description. ##STR1## In a preferred embodiment Q is chosen from pyridinium, quinolinium or isoquinolinium. In a most preferred embodiment Q is a pyridinium substituted on the N.sup.+ with a C.sub.5 to C.sub.8 alkyl group.The photographic material is preferably a graphic arts recording material. High gradation and excellent hard dot quality are obtained.Type: GrantFiled: January 22, 1999Date of Patent: December 7, 1999Assignee: Agfa-Gevaert, N.V.Inventors: Johan Loccufier, Stefaan Lingier, Sabine Emmers, Jean-Marie Dewanckele, Pierre De Clercq, Noel Hosten, Dirk Van Haver
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Patent number: 5998105Abstract: Disclosed is a method of image formation comprising the steps of: (i) subjecting a silver halide color photographic material to scanning exposure with a beam modulated in accordance with image information to prepare a scanning-exposed photographic material, wherein the silver halide color photographic material comprises a support having provided thereon a photographic constituent layer containing at least one reducing agent for color formation represented by formula (I) and at least one dye-forming coupler, and wherein a scanning pitch of the beam is smaller than an effective beam diameter of the beam, and an inter-raster overlap width of the beam is from 5% to 95% of the effective beam diameter; and (ii) developing the scanning-exposed photographic material:R.sup.11 --NHNH--X--R.sup.12 (I)wherein R.sup.11 represents an aryl group or a heterocyclic group; R.sup.12 represents an alkyl group, an alkenyl group, an alkinyl group, an aryl group or a heterocyclic group; X represents --SO.sub.Type: GrantFiled: December 2, 1996Date of Patent: December 7, 1999Assignee: Fuji Photo Film Co., Ltd.Inventor: Yasuhiro Murakoshi
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Patent number: 5994040Abstract: A processing composition for silver halide photographic light-sensitive material, which comprises at least one compound represented by the following formula (A), (A-I) or (A-II) and at least one compound represented by the following formula (B): ##STR1## Also disclosed are a developer prepared from the processing composition, and a processing method using the developer.Type: GrantFiled: March 4, 1997Date of Patent: November 30, 1999Assignee: Fuji Photo Film Co., Ltd.Inventors: Shinnichi Morishima, Kohzaburoh Yamada, Seiji Yamashita, Minoru Sakai, Kouta Fukui, Eiichi Okutsu
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Patent number: 5989773Abstract: A developing processing method and an image forming method are described, which comprise the steps of (a) exposing a silver halide photographic material comprising a support having thereon at least one light-sensitive silver halide emulsion layer; and (b) developing the exposed silver halide photographic material with a developer containing a developing agent, containing substantially no dihydroxybenzene developing agent, containing an auxiliary developing agent exhibiting a superadditive property, containing a quaternary onium salt compound, and having a pH value of from 9.5 to 11.5, or a developer containing a developing agent, containing substantially no dihydroxybenzene developing agent, and having a pH value of from 10 or less.Type: GrantFiled: March 31, 1997Date of Patent: November 23, 1999Assignee: Fuji Photo Film Co., LtdInventors: Kouta Fukui, Minoru Sakai, Kazunobu Katoh
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Patent number: 5989774Abstract: A silver halide photographic material is disclosed containing a new type of hydrazide compound represented by following general formula I, the different symbols of which are defined in the description. ##STR1## In a preferred embodiment Q is pyridinium, substituted with a propargyllic group or butynyl group.The photographic material is preferably a graphic arts recording material. High gradation and excellent hard dot quality are obtained.Type: GrantFiled: September 10, 1998Date of Patent: November 23, 1999Assignee: Agfa-Gevaert, N.V.Inventors: Johan Loccufier, Stefaan Lingier, Paul Callant, Sabine Emmers
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Patent number: 5985509Abstract: A high contrast photographic material comprises a support bearing a silver halide emulsion layer. This material is free from nucleating agents and has a silver:gelatin ratio greater than 1. The emulsion layer comprises silver halide grains that are spectrally sensitized. Moreover, the material contains a density enhancing amine compound in the emulsion layer or in an adjacent hydrophilic colloid layer. The spectrally sensitized silver halide grains comprise one grain population sensitized to radiation of a particular wavelength region, and one or more additional grain populations sensitized to radiation of a different wavelength region.Type: GrantFiled: December 18, 1997Date of Patent: November 16, 1999Assignee: Eastman Kodak CompanyInventors: Allison Hazel C. Dale, Roger H. Piggin
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Patent number: 5985508Abstract: A silver halide photographic material is disclosed, comprising a support having thereon at least one silver halide emulsion layer, wherein said emulsion layer contains a heavy metal selected from Ir, Ru, Rh, Re and Cr in an amount of at least 1.times.10.sup.-5 mol per mol of silver halide and (1) silver halide grains having a silver chloride content of 95 mol % or more, said grains being formed under acidic conditions and then subjected to gold-sulfur sensitization, (2) a silver halide having a silver chloride content of 95 mol % or more and then subjected to Se or Te sensitization or (3) silver halide grains having a silver chloride content of 95 mol % or more and conatianing at least one iron compound, and at least one of said emulsion layer and other hydrophilic colloid layers contains at least one hydrazine derivative and at least one nucleation accelerator. Also, disclosed is a method for producing the above-described silver halide photographic material.Type: GrantFiled: January 3, 1997Date of Patent: November 16, 1999Assignee: Fuji Photo Film Co., Ltd.Inventors: Tadashi Ito, Takahiro Goto, Shoji Yasuda
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Patent number: 5981138Abstract: A hydrazine compound represented by the following formula (I):Ar.sub.1 --NH--NH--G.sub.1 --R.sub.1 (I)wherein Ar.sub.1 represents an aromatic group; G.sub.1 represents a carbonyl group, a sulfonyl group, a sulfoxy group, a phosphoryl group, an oxalyl group or an iminomethylene group; R.sub.1 represents a hydrogen atom or a block group; and at least one of Ar.sub.1 and R.sub.1 has a group represented by the following formula (II): ##STR1## wherein * represents a bond for connecting directly or through a liking group to Ar.sub.1 or R.sub.1 ; Z represents a nonmetallic atom group capable of forming a 5- or 6-membered unsaturated heterocyclic ring having a conjugated positive charge; and X.sup.- represents --O.sup.-, --S.sup.- or --N.sup.- --R.sub.2, wherein R.sub.2 represents an alkyl group, an alkenyl group, an alkynyl group, an aryl group or a heterocyclic group. Also disclosed is a silver halide photographic light-sensitive material containing the hydrazine compound.Type: GrantFiled: September 4, 1997Date of Patent: November 9, 1999Assignee: Fuji Photo Film Co., Ltd.Inventors: Hiroyuki Suzuki, Kohzaburoh Yamada, Hiroshi Takeuchi, Toshihide Ezoe, Takashi Hoshimiya
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Patent number: 5976758Abstract: A development processing method which comprises the steps of: imagewise exposing a silver halide photographic light-sensitive material; and developing the exposed photographic material with a developing solution, wherein the silver halide photographic material comprises a support having thereon at least one light-sensitive silver halide emulsion layer, at least one of the silver halide emulsion layer and other hydrophilic colloidal layers containing at least one hydrazine derivative; and wherein the developing solution is substantially free from a dihydroxybenzene compound, has a pH of from 9.0 to 10.5 and contains (1) at least one ascorbic acid developing agent, (2) at least one 1-phenyl-3-pyrazolidone auxiliary developing agent and (3) a compound represented by the following formula (I): ##STR1## wherein R.sub.1 to R.sub.Type: GrantFiled: December 19, 1997Date of Patent: November 2, 1999Assignee: Fuji Photo Film Co., Ltd.Inventors: Kouta Fukui, Senzo Sasaoka, Kohzaburoh Yamada
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Patent number: 5968725Abstract: A photothermographic material comprising a photosensitive silver halide, an organic silver salt, a reducing agent, and an ultrahigh contrast promoting agent, typically a hydrazine derivative. In one embodiment, a compound having a group for promoting adsorption to the silver halide is contained for suppressing occurrence of pepper fog. In another embodiment, a 5- or 6-membered heterocyclic mercapto compound having at least two nitrogen atoms or a tetraazaindene compound is contained for suppressing a change of photographic properties, typically image enlargement with a variation of developing conditions. In either case, the photothermographic material can form super-high contrast images of quality.Type: GrantFiled: April 24, 1997Date of Patent: October 19, 1999Assignee: Fuji Photo Film Co., Ltd.Inventors: Kazunobu Katoh, Minoru Sakai
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Patent number: 5965322Abstract: There is disclosed a silver halide color photographic light-sensitive material that contains, in photographic constitutional layers on a support, a hydrazine-series reducing agent for color formation, and a phenol-series magenta coupler having an acylamino group at the 5-position, and/or a naphthol-series cyan coupler having an amido group at the 5-position. The light-sensitive material makes low-replenishment and low-discharge processing possible, and exhibits good color reproducibility and good color-forming property.Type: GrantFiled: February 18, 1997Date of Patent: October 12, 1999Assignee: Fuji Photo Film Co., Ltd.Inventors: Toshiyuki Makuta, Koki Nakamura, Kiyoshi Takeuchi
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Patent number: 5962182Abstract: A method for forming an image which comprises imagewise-exposing a silver halide photographic material comprising a support having thereon at least one silver halide emulsion layer, wherein the emulsion layer or other hydrophilic colloid layer contains a hydrazine derivative as a nucleating agent and contains at least one compound represented by formula (A); and then developing the exposed photographic material with a developer having a pH of 9.0 to 11.0 which contains an ascorbic acid type developing agent and does not substantially contain a dihydroxybenzene type developing agent: ##STR1## wherein X represents a hydrogen atom, an aryl group, a heterocyclic group, or a group represented by formula (B): ##STR2## wherein each of R.sub.1, R.sub.2 and R.sub.3 may be the same or different, and each represents a hydrogen atom or a group other than a hydroxyl group.Type: GrantFiled: March 24, 1997Date of Patent: October 5, 1999Assignee: Fuji Photo Film Co., Ltd.Inventors: Kazunobu Katoh, Shinnichi Morishima
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Patent number: 5962199Abstract: An image forming process of a silver halide photographic material comprising a glass support having thereon a silver halide emulsion layer is disclosed, the process comprising exposing with laser beam spot with a diameter of 0.05 to 5 .mu.m and developing the exposed photographic material with a developer, wherein the silver halide emulsion layer contains silver halide grains having an average grain size of 0.08 to 0.2 .mu.m and a chloride content of at least 50 mol %; the developer containing a developing agent selected from hydroquinone and ascorbic acid, and a developing agent selected from p-methyl-aminophenol, 1-phenyl-3-pyrazolidone and 1-pheny-4-dimethyl-3-pyrazolidone; and the developed photographic material having a contrast of 4.8 to 12.Type: GrantFiled: February 11, 1998Date of Patent: October 5, 1999Assignee: Konica CorporationInventor: Tomonobu Moriya
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Patent number: 5962212Abstract: A thermographic recording element comprising an organic acid silver salt, a reducing agent, a specific hydrazine derivative, and optionally, a photosensitive silver halide is improved in storage stability and forms images having high Dmax.Type: GrantFiled: June 3, 1998Date of Patent: October 5, 1999Assignee: Fuji Photo Film Co., Ltd.Inventors: Hiroyuki Suzuki, Toshiaki Kubo, Kohzaburoh Yamada
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Patent number: 5955246Abstract: The present invention concerns a novel method of developing a silver halide photographic product by the surface application of a developing solution. The photographic product comprises an incorporated developing agent in an amount of 0.5 mol/mol of silver, or less. The applied developing solution comprises an alkanolamine (at least 0.6 mol/l), a solution miscible wetting agent, and a developing agent.Type: GrantFiled: August 4, 1998Date of Patent: September 21, 1999Assignee: Eastman Kodak CompanyInventor: Fran.cedilla.oise Marie Thomas
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Patent number: 5955247Abstract: A method for processing a black-and-white silver halide photographic light-sensitive material by a monobath processing method.Type: GrantFiled: July 7, 1998Date of Patent: September 21, 1999Assignee: Konica CorporationInventor: Shinji Uchihiro
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Patent number: 5945262Abstract: The present invention provides a correcting liquid for silver imaged lithographic printing plates being an aqueous solution having a pH in the range between 5.5 and 8.5 and comprising a iron (III) complex salt of an organic acid, a sulphite or a metabisulphite, a silver halide solvent and an accelerator, said accelerator being an organic heterocyclic compound having a mercapto- or thione group and not having a hydrophilic substituent besides the said mercapto or thione group characterized in that said accelerator is present in an amount ranging from 0.04 to 0.4 mole per liter of correcting liquid.Type: GrantFiled: December 4, 1996Date of Patent: August 31, 1999Assignee: Agfa-Gevaert, N.B.Inventor: Lode Deprez
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Patent number: 5939233Abstract: Nucleating agents that promote high contrast in photographic films are disclosed. The nucleating agents are aryl sulfonamido hydrazides having pyridinium, phosphonium or cycloalkenylpyridinium functional groups. The nucleating agents increase the speed and contrast of graphic arts films and improve dot quality in halftone applications. Boosters are not required to obtain good dot quality and photographic speed.Type: GrantFiled: October 28, 1998Date of Patent: August 17, 1999Assignee: Kodak Polychrome Graphics LLCInventors: Syeda Husain, John F. Pilot, Rajendra J. Shah
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Patent number: 5935690Abstract: The invention relates to a photographic element comprising a paper base with a thickness from 0.025 mm to 0.25 mm, at least one photosensitive silver halide layer, and a layer of microvoided and biaxially oriented polyolefin sheet having a layer thickness of 0.020 mm to 0.050 mm, a density of between 78% and 100% of the solid polymer density located between said paper base and said at least one photosensitive silver halide layer, and wherein the entire photographic element is substantially free from surface distortion or cracking when the photographic element is forced to the shape of a diameter of no less than 8.0 mm.Type: GrantFiled: May 23, 1997Date of Patent: August 10, 1999Assignee: Eastman Kodak CompanyInventors: Peter T. Aylward, Robert P. Bourdelais, Douglas N. Haydock, Thaddeus S. Gula
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Patent number: 5932409Abstract: A silver halide photographic material is described, which contains at least one compound represented by the following formula (S1): ##STR1## wherein R.sub.11 represents an alkyl group, an acyl group, an alkoxycarbonyl group, a carbamoyl group, a sulfonyl group, or a sulfamoyl group; R.sub.12 represents a hydrogen atom, an alkyl group or an acyl group, provided that when R.sub.11 represents an alkyl group, R.sub.12 represents an alkyl group, R.sub.11 and R.sub.12 may be linked with each other to form a 5- to 7-membered ring; R.sub.13 represents a hydrogen atom, an alkyl group, an aryl group, or a heterocyclic group; R.sub.14 represents a hydrogen atom, an alkyl group, an aryl group, or a heterocyclic group; and L represents --CO--, --SO.sub.2 -- or --SO--.Type: GrantFiled: July 22, 1997Date of Patent: August 3, 1999Assignee: Fuji Photo Film Co., Ltd.Inventors: Masato Taniguchi, Takashi Hoshimiya, Sinichi Ichikawa, Mamoru Sakurazawa, Junichiro Hosokawa
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Patent number: 5932390Abstract: A silver halide photographic material which comprises a support having thereon at least one silver halide emulsion layer, wherein the photographic material contains a hydrazine derivative and a polymer latex having a core/shell structure which each are incorporated in at least one of the silver halide emulsion layer and other hydrophilic colloid layers of the photographic material. The photographic material provides superhigh contrast images without impairing the physical properties of the film.Type: GrantFiled: February 9, 1996Date of Patent: August 3, 1999Assignee: Fuji Photo Film Co., Ltd.Inventors: Kunio Ishigaki, Junichi Yamanouchi, Hidetoshi Watanabe
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Patent number: 5928835Abstract: A method of processing a silver halide photographic light-sensitive material is disclosed, comprising a support having on one side of the support a silver halide emulsion layer and, on both sides, a hydrophilic colloid layers, the processing method comprising the steps of developing an exposed photographic material, fixing, and washing or stabilizing, wherein at least one layer of the emulsion side contains a compound represented by the following formula; and the layer(s) of each side having a processing water content of 0.5 to 7.0 g per m.sup.Type: GrantFiled: July 15, 1996Date of Patent: July 27, 1999Assignee: Konica CorporationInventors: Kazuhiko Hirabayashi, Katsushi Fujita
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Patent number: 5925493Abstract: A developing processing method and an image forming method are described, which comprise the steps of (a) exposing a silver halide photographic material comprising a support having thereon at least one light-sensitive silver halide emulsion layer; and (b) developing the exposed silver halide photographic material with a developer containing a developing agent, containing substantially no dihydroxybenzene developing agent, containing an auxiliary developing agent exhibiting a superadditive property, containing a quaternary onium salt compound, and having a pH value of from 9.5 to 11.5, or a developer containing a developing agent, containing substantially no dihydroxybenzene developing agent, and having a pH value of from 10 or less.Type: GrantFiled: March 4, 1997Date of Patent: July 20, 1999Assignee: Fuji Photo Film Co., Ltd.Inventors: Kouta Fukui, Minoru Sakai, Kazunobu Katoh
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Patent number: 5888694Abstract: A silver halide photographic material is described, which comprises a compound represented by the following formula (I) or (II):A.paren open-st.(L).sub.m --B).sub.n (I)(A--(L).sub.m .paren close-st..sub.n B (II)wherein A represents an adsorption accelerating group to silver halide or a precursor thereof; B represents a quaternised nitrogen-containing heterocyclic ring and a counter ion thereof; L represents a linking group; m represents 0 or 1; and n represents an integer of from 1 to 4. An image formation method is also described, which comprises the steps of exposing the above-described silver halide photographic material and developing the exposed material with a specific developer.Type: GrantFiled: February 18, 1997Date of Patent: March 30, 1999Assignee: Fuji Photo Film Co., Ltd.Inventors: Kohzaburoh Yamada, Toshiaki Kubo
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Patent number: 5888708Abstract: A development processing method comprising developing a silver halide photographic material with a developing solution, (i) wherein the silver halide photographic material comprises a support having thereon at least one light-sensitive silver halide emulsion layer and contains: (a) at least two kinds of light-sensitive silver halide emulsions which are each spectrally sensitized and have sensitivities different from each other with respect to a certain exposure wavelength; and (b) at least one hydrazine derivative in at least one of the silver halide emulsion layer and other hydrophilic colloidal layers, and (ii) wherein the developing solution is substantially free from a dihydroxybenzene compound, has a pH of from 9.0 to 10.5 and contains: (1) at least one ascorbic acid developing agent and (2) at least one auxiliary developing agent represented by the following general formula (I): ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.Type: GrantFiled: January 28, 1998Date of Patent: March 30, 1999Assignee: Fuji Photo Film Co., Ltd.Inventors: Kouta Fukui, Senzo Sasaoka
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Patent number: 5882841Abstract: A silver halide photographic light-sensitive material comprising a support having thereon at least one light-sensitive silver halide emulsion layer, wherein at least one of the silver halide emulsion layer and other hydrophilic colloid layers comprises fine polymer particles containing at least one hydrazine compound represented by the following general formula (NB):A--(B).sub.m (NB)wherein A represents a connecting group; m represents an integer of from 2 to 6; and B represents a group containing a hydrazine structure. The sliver halide photographic light-sensitive material exhibits an ultrahigh contrast, an excellent storage stability and an excellent processing stability and is prevented from the occurrence of processing unevenness. A method for processing the silver halide photographic light-sensitive material is also disclosed.Type: GrantFiled: December 24, 1997Date of Patent: March 16, 1999Assignee: Fuji Photo Film Co., Ltd.Inventors: Toshihide Ezoe, Kouta Fukui, Kohzaburoh Yamada
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Patent number: 5876907Abstract: An image formation method, which comprises the steps of imagewise exposing a silver halide photographic material comprising a support having thereon at least one layer of a silver halide emulsion chemically sensitized with at least one selenium or tellurium compound, and then subjecting the material to development-processing with a developer containing substantially no dihydroxybenzene developing agent but containing a developing agent represented by the following formula (I): ##STR1## wherein R.sub.1 and R.sub.Type: GrantFiled: October 28, 1997Date of Patent: March 2, 1999Assignee: Fuji Photo Film Co., Ltd.Inventor: Tsutomu Arai
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Color-developing agent, silver halide photographic light-sensitive material and image-forming method
Patent number: 5874203Abstract: There is disclosed novel color-developing agents of the formula (I). There is also disclosed silver halide photographic light-sensitive materials and image-forming methods, using the color-developing agent. The color-developing agent is excellent in color-forming property, and the image obtained from the color-developing agent is good in hue. ##STR1## wherein R.sub.1 to R.sub.4 each represent a group of nonmetal atoms required to form, together with the carbon atom, a monocyclic 5-membered aromatic ring or a 5-membered aromatic ring condensed with another ring, with the proviso that at least two of R.sub.1 to R.sub.4 are nitrogen atoms; and Z represents an acyl group, a carbamoyl group, an alkoxycarbonyl group, an aryloxycarbonyl group, a sulfonyl group, a sulfamoyl group, an amidino group, or an imidoyl group.Type: GrantFiled: November 26, 1996Date of Patent: February 23, 1999Assignee: Fuji Photo Film, Co., Ltd.Inventors: Kensuke Morita, Hiroo Takizawa, Taiji Katsumata -
Patent number: 5869218Abstract: Disclosed are an image formation process which comprises developing a photographic material comprising a silver halide emulsion layer, and a hydrazine derivative and a specific phosphonium compound of formula (1) with a developer which is substantially free of a dihydroxybenzene developing agent, contains a specific developing agent of formula (2) and at least one p-aminophenol derivative, and has a pH value of not more than 10, and a development process which comprises developing a photographic material comprising a silver halide emulsion layer, and a hydrazine derivative and a nucleation accelerator, with a developer having a pH value of from 9.0 to 10.5 and containing a first developing agent selected from ascorbic acid and a derivative thereof and a second developing agent selected from aminophenol and a derivative thereof, wherein a solution having the same composition as the fresh developer but a higher pH value than the fresh developer is used as a development replenisher.Type: GrantFiled: July 26, 1996Date of Patent: February 9, 1999Assignee: Fuji Photo Film Co., Ltd.Inventors: Minoru Sakai, Kazunobu Katoh
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Patent number: RE36384Abstract: The invention comprises a process for forming a high contrast photographic image including the steps of imagaewise exposing a silver halide photographic element containing a hydrazine compound which functions as a nucleating agent, wherein the element is free of incorporated amine boosters. The exposed element is developed with a chemically stable aqueous alkaline developing solution that is free of dihydroxybenzene developing agents and has a pH between 9.5 and 11. The developing solution comprises an ascorbic acid developing agent; an auxiliary developing agent; and a combination of an alkali metal carbonate and an alkali metal borate comprising between 0.125 and 0.5 molar concentration of the carbonate and between 0.04 and 0.35 molar concentration of the borate.Type: GrantFiled: November 17, 1997Date of Patent: November 9, 1999Assignee: Kodak Polychrome Graphics, LLCInventors: John L. Adkins, Dinesh P. Patel