Inorganic Material Patents (Class 430/608)
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Patent number: 7229749Abstract: A silver halide photographic emulsion, wherein 70% or more of the total projected area of silver halide grains is occupied by silver halide grains satisfying the following requirements (a) to (d). (a) It is composed of a tabular silver halide host grain with an aspect ratio of 12 or more having two mutually parallel principal planes and a silver halide protrusion portion bonded by epitaxial junction on the surface of the host grain. (b) The silver bromide content rates of the host grain and the protrusion portion both are 70 mol % or more. (c) When the average silver iodide content rate of all grains is I mol %, the average silver iodide content rate of the region of 8%, based on the silver amount of the host grain, of the outer shell of the host grain is (I+12) mol % or less.Type: GrantFiled: March 10, 2006Date of Patent: June 12, 2007Assignee: Fujifilm CorporationInventor: Yasushi Miyamoto
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Patent number: 7166421Abstract: Black-and-white, aqueous-based, silver halide-containing photothermographic materials have increased stability both prior to use and after imaging with the incorporation of at least 0.005 g/m2 of a tetrafluoroborate salt.Type: GrantFiled: December 29, 2004Date of Patent: January 23, 2007Assignee: Eastman Kodak CompanyInventors: Sharon M. Simpson, Kumars Sakizadeh, Leif P. Olson
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Patent number: 6852481Abstract: A silver halide emulsion is disclosed, comprising at least one monovalent Au(I) complex coordinated with a compound represented by the following formula (1): R1-Ch-2??(1) wherein R1 and R2 each independently represents an alkyl group, an alkenyl group, an alkynyl group, an aryl group or a heterocyclic group, R1 and R2 may combine with each other to form a 3-, 4-, 5-, 6- or 7-membered ring, and Ch represents a sulfur atom, a selenium atom or a tellurium atom.Type: GrantFiled: August 7, 2003Date of Patent: February 8, 2005Assignee: Fuji Photo Film Co., Ltd.Inventors: Hiroyuki Suzuki, Hirotomo Sasaki
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Patent number: 6689553Abstract: A silver halide photographic emulsion that comprises silver halide grains. The emulsion was prepared in the presence of at least one halogen oxoacid salt represented by formula (I) below: M(XOn)m (I) wherein M represents an alkali metal ion or alkaline-earth metal ion, X represents a halogen atom, n represents 2 or 3, and m represents 1 or 2. A silver halide photographic light-sensitive material that has at least one silver halide emulsion layer on a support. The material contains the above silver halide photographic emulsion.Type: GrantFiled: March 1, 2001Date of Patent: February 10, 2004Assignee: Fuji Photo Film Co., Ltd.Inventors: Mamoru Sakurazawa, Takeshi Funakubo, Hirotomo Sasaki, Kiyoshi Morimoto
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Patent number: 6686138Abstract: A silver halide light sensitive motion picture photographic print element comprising a support having a front side and a back side and bearing on the front side thereof in order 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, 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, and 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; said element further comprising an antistatic layer containing vanadium pentoxide on either side of the support, and a raw stock keeping stabilizer compound present in at least one emulsion layer or a hydrophilic colloid layer in reactive association with at least one emulsion layer, wherein the stabilizer compound comprises Au2S orType: GrantFiled: December 30, 2002Date of Patent: February 3, 2004Assignee: Eastman Kodak CompanyInventor: Kathleen R. C. Gisser
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Publication number: 20030157445Abstract: In accordance with one embodiment of the invention, a photographic element is described comprising a support bearing one or more hydrophilic colloid layers including at least one photographic silver halide emulsion layer, wherein sequestered silver ions are incorporated into at least one hydrophilic colloid layer in the form of a silver ion containing material which sequesters silver ions prior to photographic processing and releases silver ions upon exposure to photographic processing solutions. Method for preparing and processing such photographic element are also described. In accordance with particular embodiments of the invention, the silver ion containing material comprises a silver ion-exchanged zeolite material or an intercalation composition comprising a layered host material having silver ions inserted as guest ions between the layers of the host material.Type: ApplicationFiled: December 28, 2001Publication date: August 21, 2003Inventors: Joseph F. Bringley, Kenneth J. Lushington, Tiecheng A. Qiao, James S. Honan
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Publication number: 20030118958Abstract: A silver salt photothermographic imaging material is disclosed, comprising a support provided thereon with a light sensitive layer containing an organic silver salt, a light sensitive silver halide, a reducing agent and a binder, wherein at least one side of the support is provided with a sublayer containing a metal oxide in an amount of 5 to 50% by volume and the surface of the sublayer exhibiting a maximum height (Ry) of not more than 0.1 &mgr;m.Type: ApplicationFiled: July 3, 2002Publication date: June 26, 2003Applicant: KONICA CORPORATIONInventors: Takayuki Sasaki, Akihisa Nakajima, Tadashi Arimoto, Kenji Ohnuma, Yasuo Kurachi, Eiichi Ueda
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Patent number: 6544725Abstract: A lightsensitive silver halide photographic emulsion comprises silver halide grains, a sensitizing dye having a given maximum absorption wavelength and an organic compound exhibiting no absorption in a visible light region. The addition amount of the organic compound is in the range of 1 to 50 mol % based on the sensitizing dye, and a maximum absorption wavelength of the photographic emulsion exhibited by the sensitizing dye in the presence of the organic compound is at least 2 nm shorter than the maximum absorption wavelength exhibited by the sensitizing dye in the absence of the organic compound.Type: GrantFiled: August 8, 2001Date of Patent: April 8, 2003Assignee: Fuji Photo Film Co., Ltd.Inventor: Kiyoshi Morimoto
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Publication number: 20020009682Abstract: The present invention provides a silver halide photographic light-sensitive material comprising a support having thereon at least one silver halide emulsion layer, wherein the silver halide emulsion contained in the silver halide emulsion layer comprises silver halide grains having a silver chloride content of 90 mol % or more, and the silver halide emulsion further contains a metal complex having H2O as a ligand. It also provides a silver halide photographic light-sensitive material comprising a support having thereon at least one silver halide emulsion layer, wherein the silver halide emulsion contained in the silver halide emulsion layer contains a metal complex having O2− as a ligand.Type: ApplicationFiled: June 13, 2001Publication date: January 24, 2002Applicant: FUJI PHOTO FILM CO., LTD.Inventors: Tomonori Owaki, Tadanobu Sato, Takahiro Matsuno
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Patent number: 6197485Abstract: A photographic assemblage comprising a silver halide photographic light-sensitive element comprising at least one sulfur and gold sensitized silver halide emulsion layer, said element comprising chlorinated s-triazine hardeners and photographically useful chemical compounds containing cyano groups, and a closed vessel in which the element is closed and stored at a constant relative humidity, is protected against HCN gas, which may evolve from photographic addenda included in the light-sensitive element to cause fog in the silver halide emulsion layers, by the addition of a palladium compound, in a silver halide emulsion layer and/or an adjacent layer thereto, as scavenger for HCN gas released from the element.Type: GrantFiled: September 27, 1993Date of Patent: March 6, 2001Assignee: Minnesota Mining & Manufacturing CompanyInventors: Luigi Cellone, Brunella Fornasari, Giovanni Giusto
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Patent number: 6194135Abstract: A negatively developing color photographic silver halide material having a support and at least one blue-sensitive silver halide emulsion layer containing at least one yellow coupler, at least one green-sensitive silver halide emulsion layer containing at least one magenta coupler and at least one red-sensitive silver halide emulsion layer containing at least one cyan coupler, at least 95 mol % of the silver halides of which consist of AgCl, and in which at least one silver halide emulsion layer exhibits solarization on analogue exposure, is distinguished on scanning exposure by elevated color density and on analogue exposure by contrast which is independent of exposure time.Type: GrantFiled: October 22, 1999Date of Patent: February 27, 2001Assignee: Agfa-Gevaert Naamloze VennootschapInventors: Cuong Ly, Stefan Amann, Jürgen Jung, Dieter Rockser
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Patent number: 6165704Abstract: There is disclosed a silver halide photographic light-sensitive material which contains, on a support, a specific nitrogen-containing heterocyclic compound, and a divalent metal cation that is an acid with intermediate hardness/softness classified in accordance with the HSAB principle, in an amount 1 to 300 times the number of moles of the nitrogen-containing heterocyclic compound. The light-sensitive material can form an image with high sensitivity and low fogging, both in heat-development processing characterized by its ease and rapidness, and in usual liquid-developing processing that is widely used.Type: GrantFiled: September 15, 1999Date of Patent: December 26, 2000Assignee: Fuji Photo Film Co., Ltd.Inventors: Kiyoteru Miyake, Tadashi Ikeda
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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: 6063557Abstract: A color photographic silver halide material in which at least one of the blue-sensitive silver halide emulsions is doped with mercury and is spectrally sensitised with a sensitising dye of formula (I) ##STR1## wherein X.sub.1 and X.sub.2, independently of each other, denote O, S, Se, NR,R denotes alkyl or carboxyalkyl,R.sub.1 and R.sub.2 or R.sub.2 and R.sub.3 denote the remaining members for the completion of a phenanthro- or anthraazole ring, and the remaining R.sub.1 or R.sub.3 radical denotes a hydrogen atom,R.sub.4 and R.sub.5, independently of each other, denote a hydrogen atom, alkyl or aryl, orR.sub.4 and R.sub.5 jointly denote the remaining members of an unsubstituted or substituted benzazole, naphthazole, phenanthro- or anthraazole,S.sub.1 and S.sub.2, independently of each other, denote alkyl, sulphoallyl or carboxyalkyl, andM.sup.+ denotes a cation which is possibly necessary for charge equalisation,is distinguished by an improved latent image stability.Type: GrantFiled: September 2, 1998Date of Patent: May 16, 2000Assignee: Agfa-Gevaert N.V.Inventors: Cuong Ly, Maria Nietgen, Michael Missfeldt, Heinz-Horst Teitscheid, Edgar Draber, Markus Geiger
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Patent number: 6045989Abstract: A color photographic silver halide material having a support and at least one light-sensitive silver halide emulsion layer, the silver halide of which consists of at least 95 mole % of AgCl, and which contains a magenta coupler of formula (I) whereinR denotes H or a group which is split off under the conditions of chromogenic development,R.sub.1 denotes alkyl, which is optionally substituted, andR.sub.2 denotes R.sub.1 or aryl,wherein the sum of all the C atoms of the R.sub.1 and R.sub.2 radicals in a coupler molecule is at least 12, and wherein the silver halide contains mercury, is distinguished by improved latent image stability.Type: GrantFiled: July 24, 1998Date of Patent: April 4, 2000Assignee: Agfa-Gevaert NVInventors: Cuong Ly, Ralf Weimann
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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: 6015656Abstract: A tabular silica dispersion is disclosed, which is obtained by mixing a tabular silica, gelatin, a cyclodextrin and a compound capable of crosslinking gelatin. Silver halide photographic materials are also disclosed, in which the tabular silica dispersion is incorporated into a silver halide emulsion layer or a light-insensitive hydrophilic colloidal layer.Type: GrantFiled: July 16, 1999Date of Patent: January 18, 2000Assignee: Konica CorporationInventor: Ken Nagami
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Patent number: 5989795Abstract: This invention relates to a photographic recording material comprising a support and a photosensitive chemically sensitized silver halide emulsion layer, containing a sensitizing dye selected from the group consisting of oxonal dyes, merocyanine dyes, and cyanine dyes having a net negative charge, and which has a pH value between about 2 to about 5 and a pAg value between about 1 to about 4.7.Type: GrantFiled: May 21, 1992Date of Patent: November 23, 1999Assignee: Eastman Kodak CompanyInventors: Francis John Evans, Arthur Herman Herz
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Patent number: 5989797Abstract: A light-sensitive silver halide photographic material and a method for preparing said material is provided, wherein said material comprises a support and on one or both sides thereof at least one silver halide emulsion layer and a protective antistress layer as an outermost layer, characterized in that said silver halide emulsion layer(s) and/or said protective antistress layer comprise(s) at least one zeolite loaded with a photographically useful group. Said photographically useful group is a soluble salt, an organic compound releasing chloride, bromide or iodide, a sulfur salt, a selenium salt, a tellurium salt and/or a metal salt of group VIII.Type: GrantFiled: October 7, 1998Date of Patent: November 23, 1999Assignee: Agfa-Gevaert, N.V.Inventor: Hubert Vandenabeele
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Patent number: 5869217Abstract: A silver halide photographic material which has a layer containing a swellable inorganic stratifying compound.Type: GrantFiled: July 24, 1997Date of Patent: February 9, 1999Assignee: Fuji Photo Film Co., Ltd.Inventor: Toshiaki Aono
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Patent number: 5853951Abstract: A silver halide photographic material comprising a support having thereon at least one silver halide emulsion layer, wherein: the silver halide emulsion layer comprises a silver halide comprising silver chloride or silver chlorobromide having a silver chloride content of not less than 95 mol %; the silver halide emulsion comprises at least one transition metal selected from the group consisting of elements belonging to the groups V to VIII of the periodic table, which has one nitrosyl, thionitrosyl or aquo ligand per molecule; and the silver halide is chemically sensitized with a selenium compound selected from compounds represented by one of formulae SE-1 to SE-8 disclosed in the specification.Type: GrantFiled: October 3, 1996Date of Patent: December 29, 1998Assignee: Fuji Photo Film Co., LTD.Inventors: Shoji Yasuda, Tadashi Ito, Takahiro Goto, Hirotomo Sasaki, Seiichi Yamamoto
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Patent number: 5846696Abstract: The invention relates to a method for improving the keeping of photographic elements comprising placing said elements in a container and placing a material comprising a blend of polymer and molecular sieve particles in said container with said element.Type: GrantFiled: January 24, 1996Date of Patent: December 8, 1998Assignee: Eastman Kodak CompanyInventors: Arunachalam Tulsi Ram, Brett Zippel Blaisdell, Diane Marie Carroll-Yacoby
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Patent number: 5807662Abstract: A silver halide photographic light-sensitive material is disclosed. The light-sensitive material comprises comprising a support, having thereon, a silver halide emulsion layer and optionally a hydrophilic colloid layer, in which the silver halide emulsion layer comprises silver halide grains sensitized by a selenium compound or a tellurium compound, and a polysulfide compound, and at least one of the silver halide emulsion layer and the hydrophilic colloid layer contains a tabular particle of a silicate compound.Type: GrantFiled: May 15, 1997Date of Patent: September 15, 1998Assignee: Konica CorporationInventor: Shigeaki Takahashi
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Patent number: 5792600Abstract: Disclosed is a silver halide photographic light sensitive material comprising a support and provided thereon, a light sensitive silver halide emulsion layer and a non-light sensitive hydrophilic binder layer, wherein at least one of the light sensitive silver halide emulsion layer and the non-light sensitive hydrophilic binder layer contains tabular silica particles covered with a hardened gelatin layer.Type: GrantFiled: November 18, 1997Date of Patent: August 11, 1998Assignee: Konica CorporationInventor: Ken Nagami
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Patent number: 5710095Abstract: A recording material comprising on the same side of a support, called the heat-sensitive side, (1) one or more layers comprising an imaging composition essentially consisting of (i) a substantially light-insensitive organic silver salt being in thermal working relationship with (ii) a reducing agent, and (2) at said same side covering said imaging composition a protective later, characterized in that said protective layer mainly comprises an organic thermosetting or moisture-hardened polymer or an organic thermosetting or moisture-hardened polymer composition.Type: GrantFiled: May 2, 1996Date of Patent: January 20, 1998Assignee: Agfa-GevaertInventors: Bartholomeus Cyriel Horsten, Guy Denis Jansen, Ronald Schuerwegen, Marc Irene Van Damme, Luc Herwig Leenders
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Patent number: 5698388Abstract: There is disclosed a silver halide color photographic material comprising a silver halide emulsion of high-silver chloride emulsion wherein a thiosulfonic compound represented by formula (I) and a sulfinic acid compound represented by formula (II) are added in the step of the production of said emulsion followed by sulfur sensitization. The disclosure described provides a silver halide color photographic material less in fogging due to the lapse of time after preparation of the emulsion for coating and less in fogging due to rapid development processing.Type: GrantFiled: June 26, 1996Date of Patent: December 16, 1997Assignee: Fuji Photo Film Co., Ltd.Inventor: Kokichi Waki
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Patent number: 5674675Abstract: A silver halide photographic material comprising a support having thereon at least one silver halide emulsion layer coated on at least one side of the support. The at least one silver halide emulsion layer comprises a silver halide emulsion containing colloidal silica. 70% or more of the total projected area of all of the silver halide grains contained in the emulsion are tabular grains having an aspect ratio of 3 or more. The mean iodide content of all of the silver halide grains contained in the emulsion is 0.6 mol % or less. The photographic material provides pressure resistance, without lowering the photographic sensitivity of the chemically-sensitized tabular silver halide grains in the emulsion layer.Type: GrantFiled: March 14, 1996Date of Patent: October 7, 1997Assignee: Fuji Photo Film Co., Ltd.Inventor: Rikio Inoue
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Patent number: 5650265Abstract: Palladium compounds are incorporated into a relatively low speed photographic print element. One embodiment of the invention comprises a silver halide light sensitive photographic print element comprising a support bearing at least one silver halide emulsion image forming layer, an antistatic layer containing vanadium pentoxide, and a palladium compound. In a preferred embodiment, the silver halide light sensitive photographic print element of the invention comprises a support bearing on one side thereof at least one blue-sensitive silver halide emulsion yellow-image forming layer, at least one red-sensitive silver halide emulsion cyan-image forming layer, and at least one green-sensitive silver halide emulsion magenta-image forming layer; an antistatic layer containing vanadium pentoxide; and a palladium compound.Type: GrantFiled: December 22, 1995Date of Patent: July 22, 1997Assignee: Eastman Kodak CompanyInventors: Henry Joseph Sniadoch, Gary Norman Barber
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Patent number: 5587350Abstract: A recording material comprising on a support (i) a heat sensitive layer comprising a substantially light insensitive organic silver salt, (ii) a protective layer containing a thermomeltable particle dispersed in a binder and (iii) a reducing agent being present in the heat sensitive layer and/or any other layer of the recording material on the same side of the support carrying the heat sensitive layer.Type: GrantFiled: March 28, 1995Date of Patent: December 24, 1996Assignee: Agfa-Gevaert N.V.Inventors: Bartholomeus C. Horsten, Carlo A. Uyttendaele, Guy D. A. Jansen, Ronald Schuerwegen
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Patent number: 5578435Abstract: An encased photographic material includes a silver halide light-sensitive material having at least one silver halide emulsion layer on a support. The emulsion layer contains gold- and chalcogen-sensitized silver halide grains and a thiocyanate salt therein. At least 60% of a total projected area of the silver halide grains is occupied by tabular grains having an aspect ratio of 3 or more and having on an average 10 or more dislocation lines per grain. A lightproof container contains the light-sensitive material such that an end portion of the light-sensitive material is positioned outside the lightproof container, and that a gas can pass between an inside and an outside of the lightproof container. A light-transmitting case encases and seals the lightproof container. A hydrogen cyanide gas scavenger is present inside the case.Type: GrantFiled: May 15, 1995Date of Patent: November 26, 1996Assignee: Fuji Photo Film Co., Ltd.Inventor: Mikio Ihama
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Patent number: 5559075Abstract: A heat-sensitive recording material suited for use in direct thermal imaging by means of an information-wise energized heating element, which recording material comprises on the same side of a support, called the heat-sensitive side, one or more binder layers containing a substantially light-insensitive metal salt in thermal working relationship with at least one organic reducing agent, characterized in that said recording material also comprises an acid-sensitive leuco dye transformable into dye by means of an acid-reacting compound serving as dye developer that stands in thermal working relationship with said leuco dye.Type: GrantFiled: April 11, 1995Date of Patent: September 24, 1996Assignee: Agfa-GevaertInventors: Luc Leenders, Luc Bastiaens
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Patent number: 5547914Abstract: The present invention provides a recording material comprising on a support (i) a heat sensitive layer comprising a substantially light insensitive organic silver salt, (ii) a protective layer containing calcined China clay dispersed in a binder and (iii) a reducing agent being present in the heat sensitive layer and/or another layer on the same side of the support carrying the heat sensitive layer. The present invention further provides a method for making images therewith. The obtained images may be used in medical diagnostics.Type: GrantFiled: October 4, 1995Date of Patent: August 20, 1996Assignee: Agfa-Gevaert, N.V.Inventors: Stefaan De Meutter, Eugeen Van Goethem, Ronald Schuerwegen, Bartholmeus Horsten
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Patent number: 5536696Abstract: The present invention provides a recording material comprising on a support (i) a heat sensitive layer comprising a substantially light insensitive organic silver salt, (ii) a protective layer containing a matting agent dispersed in a binder and (iii) a reducing agent being present in the heat sensitive layer and/or another layer on the same side of the support carrying the heat sensitive layer. The present invention further provides a method for making images therewith. The obtained images may be used in medical diagnostics.Type: GrantFiled: March 28, 1995Date of Patent: July 16, 1996Assignee: Agfa-Gevaert N.V.Inventors: Bartholomeus C. Horsten, Carlo A. Uyttendaele, Guy D. A. Jansen, Ronald Schuerwegen
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Patent number: 5518875Abstract: The present invention provides a method for obtaining a photographic material by coating on a support at least one layer comprising at least one photosensitive silver halide emulsion wherein the silver halide crystals contain silver chloride for at least 60 mole %, silver bromide in a range from 5 mole % to 40 mole % and silver iodide in a range from 0 mole % to 1 mole %, characterized in that a water soluble iridium compound is added between the end of the physical ripening and the end of the chemical ripening to said silver halide emulsion at a pH between 4 and 6.5, at a pCl between -0.3 and 1 and at a ratio by weight of gelatin to silver halide, expressed as equivalent amount of silver nitrate between 0.05 and 0.5.Type: GrantFiled: March 29, 1995Date of Patent: May 21, 1996Assignee: Agfa-Gevaert, N.V.Inventors: Jos Vaes, Luc Wabbes
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Patent number: 5498511Abstract: A silver halide photographic material is disclosed, which comprises a support having thereon at least one silver halide emulsion layer, wherein the swelling amount of the hydrophilic colloid layers including the light-sensitive silver halide emulsion layer and a protective layer coated on at least one side of the support is not more than 10 .mu.m in thickness and at least 60% of the total projected area of the total silver halide grains in at least one silver halide emulsion layer includes tabular silver halide grains having a Cl.sup.- content of at least 20 mole %, a {100} plane as the major plane, a thickness of 0.35 .mu.m or less, and an aspect ratio (diameter/thickness) of at least 2, and further a developing process for developing the above silver halide photographic material with a developer containing ascorbic acid or the derivative thereof is disclosed.Type: GrantFiled: October 21, 1994Date of Patent: March 12, 1996Assignee: Fuji Photo Film Co., Ltd.Inventors: Seiji Yamashita, Mitsuo Saitou, Tomoyuki Ozeki, Tatsuya Ishizaka
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Patent number: 5478709Abstract: A light-sensitive photographic silver halide material is disclosed comprising a support and on one or both sides thereof at least one silver halide emulsion layer, at least one gelatin antistress layer and, optionally, a substantially gelatin free antistatic surface layer coated thereover, characterised in that said emulsion layer(s) comprise(s) at least one synthetic clay. As a result the said material is less sensitive to roller marks in automatic processing machines.Type: GrantFiled: September 12, 1994Date of Patent: December 26, 1995Assignee: AGFA-Gevaert, N.V.Inventor: Hubert Vandenabeele
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Patent number: 5420001Abstract: There is disclosed a silver halide photographic material for a medical care which provides a good silver color tone in a laser exposures a high sensitivity and an excellent rapid processing performance. The silver halide photographic material for a medical care comprises (A) a transparent support having the thickness of 150 .mu.m or more, and (B) a silver halide emulsion layer provided on the trasparent support, wherein silver halide grains in the silver halide emulsion layer, which contain those having a (100) face/(111) face ratio of 5 or more and those having a silver bromide-localized phase on the surface thereof, have an average grain size of not larger than 0.4 .mu.m in terms of a projected area circle-corresponding diameter, a silver chloride content of at least 90 mole %, and an iron compound of 10.sup.-5 mole or more per mole of silver halide.Type: GrantFiled: November 8, 1994Date of Patent: May 30, 1995Assignee: Fuji Photo Film Co., Ltd.Inventors: Tadashi Ito, Itsuo Fujiwara, Naoki Arai
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Patent number: 5415991Abstract: A silver halide photographic material comprises at least one light-sensitive emulsion layer containing a silver halide emulsion on a support. The light-sensitive emulsion layer comprises (a) a silver halide emulsion containing silver halide grains having a silver chloride content of 90 mol % or more, in some cases 95 mol % or more, and (b) at least one compound represented by formula (I), (II) or (III): ##STR1## in which the variables are as defined in the specification. In some embodiments of the invention, the silver halide emulsion (a) may be sensitized with a selenium, gold or iridium compound. Also, in some embodiments of the invention, the silver halide grains are substantially iodide-free and have a localized phase with a silver bromide content of 10% or more in the vicinity of the grain surface.Type: GrantFiled: November 10, 1993Date of Patent: May 16, 1995Assignee: Fuji Photo Film Co., Ltd.Inventors: Akira Kase, Naoto Ohshima, Nobutaka Ohki
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Patent number: 5382496Abstract: There is disclosed a silver halide light-sensitive material and a method for forming image using thereof, in which a high contrast negative image useful in a photographic plate making process can be obtained in a processing solution with a pH lower than 11.0. The silver halide light-sensitive material comprises a support having provided thereon at least one silver halide emulsion layer and containing a hydrazine derivative in the above emulsion layer and/or a layer adjacent thereto. At least one compound represented by the following Formula (I) or (II) is contained in the above emulsion layer and/or a layer adjacent thereto: ##STR1## wherein A represents an organic group necessary for completing a hereto ring; B and C each represents a group constituted of one or more members selected from the group consisting of an alkylene group, an arylene group, an alkenylene group, --SO.sub.2 --, --SO--, --O--, --S--, and --N(R.sub.5)--, where R.sub.5 represents an alkyl group, an aryl group, or a hydrogen atom; R.sub.Type: GrantFiled: December 7, 1993Date of Patent: January 17, 1995Assignee: Fuji Photo Film Co., Ltd.Inventors: Minoru Sakai, Kazunobu Katoh, Kiyoshi Morimoto
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Patent number: 5374513Abstract: A silver halide photographic light-sensitive material is disclosed. The light-sensitive material comprises a spectrally sensitized silver halide emulsion layer and a non-light-sensitive layer provided on a support. According to the present invention, the silver halide emulsion layer or the non-light-sensitive layer contains a complex of Ni, Co, Mn or Zn with a nitrogen-containing heterocyclic compound represented by the following formula: ##STR1## wherein ##STR2## Y is CR.sup.3 or N; Z is CR.sup.4 or N; each of R.sup.1, R.sup.2, R.sup.3 and R.sup.4 independently is hydrogen, a halogen atom, hydroxyl, amino, hydroxyamino, cyano, an alkyl group, an aryl group, an alkylthio group, an alkylamino group, an arylamino group, an alkoxycarbonyl group or an acylamino group; R.sup.1 and R.sup.Type: GrantFiled: December 15, 1992Date of Patent: December 20, 1994Assignee: Fuji Photo Film Co., Ltd.Inventors: Katsuhisa Ohzeki, Hiroyuki Asanuma
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Patent number: 5348850Abstract: A silver halide photographic material has on a support at least one light-sensitive silver halide emulsion layer which comprises silver halide emulsion grains having a chloride content: of at least 50 mol % and containing a metal selected from rhodium, ruthenium and rhenium in an amount of at least 10.sup.-8 mole per mole of silver, said silver halide emulsion being spectrally sensitized with a compound of general formula (I) and being chemically sensitized with a selenium or tellurium compound: ##STR1## wherein Z and Z.sub.1 each represents a group of nonmetallic atoms necessary to complete a 5- or 6-membered nitrogen-containing heterocyclic nucleus; R and R.sub.1 each represents an unsubstituted or substituted alkyl group, or an unsubstituted aryl group; Q and Q.sub.1 each represents a group of atoms necessary to complete a 4-thiazolidinone, 5-thiazolidinone or 4-imidazolidinone nucleus; L, L.sub.1 and L.sub.2 each represents an unsubstituted or substituted methine group; n.sub.1 and n.sub.Type: GrantFiled: August 27, 1993Date of Patent: September 20, 1994Assignee: Fuji Photo Film Co., Ltd.Inventor: Tetsuo Yoshida
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Patent number: 5348848Abstract: A silver halide photographic light-sensitive material comprising a support and provided thereon, a silver halide emulsion layer comprising silver halide grains containing at least one substance selected from the group consisting gallium, germanium, indium, thallium and compounds thereof.Type: GrantFiled: March 26, 1993Date of Patent: September 20, 1994Assignee: Konica CorporationInventors: Shuji Murakami, Shigeo Tanaka
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Patent number: 5342750Abstract: A silver halide photographic material comprises a silver halide emulsion layer provided on a support. In the photographic material of the present invention, the silver halide emulsion layer contains a tellurium compound represented by the formula (I) or (II): ##STR1## in which each of R.sup.11 and R.sup.12 is --OR.sup.13, --NR.sup.14 R.sup.15, --SR.sup.16 or hydrogen; R.sup.11 and R.sup.12 may be combined with each other to form a heterocyclic ring; each of R.sup.21 and R.sup.22 is an alkyl, alkenyl, alkynyl, aralkyl, aryl or heterocyclic group, --OR.sup.23, --NR.sup.24 R.sup.25, --SR.sup.26 or hydrogen; R.sup.21 and R.sup.22 may be combined with each other to form a heterocyclic ring; each of X.sup.1 and X.sup.2 is oxygen, sulfur or .dbd.NR.sup.17 ; each of X.sup.3 and X.sup.4 is oxygen, sulfur or .dbd.NR.sup.27 ; each of R.sup.13, R.sup.14, R.sup.15, R.sup.16, R.sup.17, R.sup.23, R.sup.24, R.sup.25, R.sup.26 and R.sup.27 is an alkyl, alkenyl, alkynyl, aralkyl, aryl or heterocyclic group or hydrogen; R.sup.Type: GrantFiled: April 23, 1993Date of Patent: August 30, 1994Assignee: Fuji Photo Film Co., Ltd.Inventors: Hirotomo Sasaki, Toru Fujimori, Hiroyuki Mifune, Kimiyasu Morimura
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Patent number: 5320938Abstract: Silver halide emulsions are disclosed in which at least 50 percent of total grain projected area is accounted for by tabular grains (1) bounded by {100} major faces having adjacent edge ratios of less than 10, (2) each having an aspect ratio of at least 2, and (3) internally at their nucleation site containing iodide and at least 50 mole percent chloride. The emulsions are prepared by a process comprised of the steps of (a) introducing silver and halide salts into a dispersing medium so that nucleation of the tabular grains occurs in the presence of iodide with chloride accounting for at least 50 mole percent of the halide present in the dispersing medium and the pCl of the dispersing medium being maintained in the range of from 0.5 to 3.5 and (b) following nucleation completing grain growth under conditions that maintain the {100} major faces of the tabular grains.Type: GrantFiled: August 25, 1993Date of Patent: June 14, 1994Assignee: Eastman Kodak CompanyInventors: Gary L. House, Thomas B. Brust, Debra L. Hartsell, Donald L. Black, Michael G. Antoniades, Jerzy A. Budz, Yun C. Chang, Roger Lok, Sherrill A. Puckett, Allen K. Tsaur
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Patent number: 5306613Abstract: A silver halide photographic material comprises a silver halide emulsion layer and a non-light-sensitive hydrophilic colloidal layer provided on a support. The silver halide emulsion layer or the hydrophilic colloidal layer contains a selenium compound represented by the formula (I), (II) or (III): ##STR1## in which R.sup.11 is an aliphatic, aromatic or heterocyclic group, --OR.sup.13 or --NR.sup.14 R.sup.15 ; each of R.sup.13, R.sup.14 and R.sup.15 is hydrogen or an aliphatic or aromatic group; Ch is S, Se or Te; R.sup.12 is an aliphatic, aromatic or heterocyclic group or --COR.sup.16 ; each of R.sup.16, R.sup.21 and R.sup.31 has the same meaning as that of R.sup.11 ; M.sup.1 is Ge, Sn or Pb; M.sup.2 is Ni, Pd or Pt; each of R.sup.22 and R.sup.32 is an aliphatic or aromatic group; and each of n and m is 1 or 2.Type: GrantFiled: August 24, 1993Date of Patent: April 26, 1994Assignee: Fuji Photo Film Co., Ltd.Inventors: Morio Yagihara, Hiroyuki Mifune, Hirotomo Sasaki, Shinji Kato
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Patent number: 5292635Abstract: A method for reducing speed change, or both speed change and fog growth, on aging in a photographic material composed of a silver chloride or silver bromochloride emulsion, by treating the emulsion with a thiosulfonate compound and a sulfinate compound, and the photographic emulsion and materials resulting from such treatment.Type: GrantFiled: December 27, 1990Date of Patent: March 8, 1994Assignee: Eastman Kodak CompanyInventor: Roger Lok
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Patent number: 5285517Abstract: The invention relates to a high energy beam-sensitive glass (HEBS glass) exhibiting insensitivity and/or inertness to actinic radiation. Silver ion exchange in acidic aqueous solution results in a slab waveguide having a constant refractive index in the thickness dimension. Low loss single mode as well as multimode waveguides were fabricated with a great precision in the designed thickness and step index .DELTA.n. Channel waveguides were patterned and fabricated in one process step within a HEBS glass via a lithographic printing method using a high energy beam. Alternatively, predesigned pattern of channel waveguides were fabricated instantaneously upon direct write with a laser beam pattern generator employing a focused laser beam, within a HEBS glass which has been flood exposed to a high energy beam.Type: GrantFiled: June 26, 1992Date of Patent: February 8, 1994Assignee: Canyon Materials, Inc.Inventor: Che-Kuang Wu
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Patent number: 5248588Abstract: Disclosed is a silver halide photographic material, comprising a support having thereon (i) a silver halide emulsion layer which contains negative-working internal latent image-forming silver halide grains which have been chemically sensitized to a depth of less than 0.02 micrometer from the surface of the grain, and (ii) palladium in an amount from 1.times.10.sup.-9 to 1.times.10.sup.-2 mol per mol of coated silver halide.Type: GrantFiled: May 22, 1991Date of Patent: September 28, 1993Assignee: Fuji Photo Film Co., Ltd.Inventor: Katsuro Nagaoka
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Patent number: 5232827Abstract: Stabilized photographic recording materials are described which comprise ammonium salts of inorganic acids or of organic acids and preferably those that contain polyhydroxyalkyl residues. Use of these stabilizing compounds in combination with recognized antifogging agents provides enhanced storage stability of coated photographic compositions.Type: GrantFiled: September 9, 1991Date of Patent: August 3, 1993Assignee: Eastman Kodak CompanyInventors: Roger Lok, Arthur H. Herz
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Patent number: H1550Abstract: Disclosed is a silver halide photographic light-sensitive emulsion comprising silver halide grains, wherein the silver halide constituent of said silver halide grains is substantially composed of at least one constituent selected from silver bromide or silver iodobromide, and said emulsion contains at least one kind of indium compound.Type: GrantFiled: November 10, 1994Date of Patent: June 4, 1996Assignee: Konica CorporationInventor: Hiroyuki Hoshino