Processing With Identified Silver Or Silver Salt Complexing Agent Patents (Class 430/251)
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Patent number: 4782013Abstract: This invention is directed to a photographic element containing a radiation-sensitive silver halide emulsion layer and a macrocyclic thia or selena ether compound which also comprises oxygen atoms. These macrocyclic compounds are improved silver halide ripening agents.Type: GrantFiled: July 23, 1987Date of Patent: November 1, 1988Assignee: Eastman Kodak CompanyInventors: Arthur H. Herz, Roger L. Klaus
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Patent number: 4775614Abstract: An ecologically advantageous method for fixing a developed photographic silver halide emulsion layer material which involves the steps of:(A) developing an image-wise exposed silver halide emulsion layer with a developing agent in the presence of an aqueous alkaline liquid,(B) bringing the developed photographic material while still wet with the liquid of step (A) with its silver halide emulsion layer side in intimate contact with a water-absorbing layer of a receptor element, which layer comprises an organic hydrophilic colloid binder, a silver halide complexing agent, and in dispersed form a metal sulphide as silver ion scavenging agent,(C) maintaining said photographic material and receptor element in contact to allow the transfer of dissolved complexed silver compound into said receptor element, and(D) separating the photographic material from the receptor element, andwherein said water-absorbing layer contains said metal sulphide in colloidal form with an average grain size below 0.1 .mu.Type: GrantFiled: October 20, 1986Date of Patent: October 4, 1988Assignee: Agfa-Gevaert N.V.Inventor: Gino L. De Rycke
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Patent number: 4713313Abstract: Compounds which include a quaternary group connected to a pyrimidine residue through a linkage are disclosed. These compounds are useful as silver halide solvents in photographic products, processes and compositions.Type: GrantFiled: May 2, 1984Date of Patent: December 15, 1987Assignee: Polaroid CorporationInventors: James R. Bartels-Keith, deceased, Anthony J. Puttick, Lloyd D. Taylor
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Patent number: 4695535Abstract: A photographic silver halide emulsion is described which comprises an acyclic thioether compound which is capable of enhancing silver halide crystal growth without causing fog formation. A process for preparation of the emulsion is also described.Type: GrantFiled: December 29, 1986Date of Patent: September 22, 1987Assignee: Eastman Kodak CompanyInventors: Philip S. Bryan, Arthur H. Herz
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Patent number: 4693955Abstract: Disclosed is a light-sensitive photographic element for negative type lithographic printing plates high in sensitivity and contrast which comprises a support having thereon a light-sensitive silver halide, a metal salt particle having substantially no light-sensitivity, a compound which reacts with an oxidized developing agent produced by development to release a compond which acts as a solvent or a solution physical development accelerator for said metal salt particle and physical development nuclei.Type: GrantFiled: March 18, 1985Date of Patent: September 15, 1987Assignee: Mitsubishi Paper Mills, Ltd.Inventors: Koichi Torizuka, Kiyoshi Futaki
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Patent number: 4690885Abstract: A silver halide photographic material which comprises a support having coated thereon a light-sensitive silver halide emulsion layer, wherein the photographic material contains at least one blocked photographic agent represented by the following general formula (I): ##STR1## wherein A represents a photographic agent moiety which is bonded to a blocking moiety through a hetero atom, or a precursor thereof; R.sup.1, R.sup.2 and R.sup.3 each represents a hydrogen atom, or a substituent group; and Z represents atoms necessary to form a carbocyclic ring or a heterocyclic ring (except for a heterocyclic ring which contains an NH group at the position adjacent to the carbon atom to which R.sup.1 is attached). The blocked photographic agent is completely stable upon storage of the photographic material, and releases a photographic agent at a desired time upon processing. The blocked photographic agent also exhibits its function to a substantial degree over a wide range of pH.Type: GrantFiled: October 16, 1985Date of Patent: September 1, 1987Assignee: Fuji Photo Film Co., Ltd.Inventors: Morio Yagihara, Akihiko Ikegawa
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Patent number: 4649096Abstract: Disclosed is a processing composition for silver complex diffusion transfer process which contains the following constituents (A) to (E) or (A) to (F):______________________________________ (A) MOH (M is an alkali metal) 0.05-0.2 mole/l (B) an alkanolamine 0.25-0.7 mole/l (C) a sulfite 0.4-0.7 mole/l (D) a thiosulfate 0.03-0.08 mole/l (E) a p-dihydroxybenzene .gtoreq.0.07 mole/l (F) a benzotriazole 10.sup.-4 -10.sup.-2 mole/l, ______________________________________the sum of (A) and (B) being 0.4 to 0.8 mole/l and the molar ratio of (B) to (A) being above 2.0. This composition can produce images and tone without scumming.Type: GrantFiled: April 2, 1985Date of Patent: March 10, 1987Assignee: Mitsubishi Paper Mills, Ltd.Inventors: Yasuo Tsubai, Koji Okazaki, Shoichi Horii, Akio Yoshida
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Patent number: 4632896Abstract: There is disclosed a processing solution for silver complex diffusion transfer process which contains at least one amino alcohol having a pKa value of less than 9 and at least one amino alcohol having a pKa value of 9 or more which are measured in a 50 wt % aqueous ethanol solution at 25.degree. C.Type: GrantFiled: September 10, 1985Date of Patent: December 30, 1986Assignee: Mitsubishi Paper Mills, Ltd.Inventors: Yasuo Tsubai, Koji Okazaki
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Patent number: 4624911Abstract: A method for image formation by a diffusion transfer process including developing an imagewise light-exposed light-sensitive silver halide emulsion layer in the presence of a developing agent, a silver halide solvent and an alkali, wherein at least two cyclic imide compounds represented by the formula: ##STR1## wherein Z represents an atomic group necessary to form a 5- or 6-membered imido ring containing from 1 to 3 nitrogen atoms, are used as the silver halide solvent is disclosed. Images obtained by the method are stable during storage over a long period of time.Type: GrantFiled: February 27, 1985Date of Patent: November 25, 1986Assignee: Fuji Photo Film Co., Ltd.Inventors: Yoshio Idota, Morio Yagihara
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Patent number: 4604339Abstract: A method of developing silver halide photographic material which contains a light-sensitive silver halide emulsion and an internally-fogged silver halide emulsion, in which the internally-fogged emulsion has internal fogging nuclei at a depth of 0.02.mu. or more below the surface of the grains is disclosed. The photographic material is developed in the presence of at least one compound selected from the group consisting of tetraazaindenes containing at least one mercapto group, purines containing at least one mercapto group, triazaindenes containing at least one mercapto group and pentaazaindenes containing at least one mercapto group, to increase photographic speed, contrast and maximum density as well as remove uneven stain.Type: GrantFiled: November 30, 1983Date of Patent: August 5, 1986Assignee: Fuji Photo Film Co., Ltd.Inventors: Tadao Sugimoto, Hideo Ikeda, Hiroyuki Mifune, Koki Nakamura
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Patent number: 4503139Abstract: There are described novel photographic products and processes which utilize compounds which release a photographic reagent in the presence of alkali. The compounds include an imidazole blocking group and cleave in alkali to release the photographic reagent. Also described are novel compounds.Type: GrantFiled: May 9, 1983Date of Patent: March 5, 1985Assignee: Polaroid CorporationInventors: James R. Bartels-Keith, Roger A. Boggs, Anthony J. Puttick, Nancy M. Sofen
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Patent number: 4388398Abstract: This invention relates to photographic products and processes employing silver halide solvent precursors of the formula ##STR1## wherein R.sup.1 is a monovalent organic radical; R.sup.2 is hydrogen or a monovalent organic radical; Z is a moiety that undergoes .beta.-elimination in aqueous alkaline solution and preferably is a moiety that undergoes .beta.-elimination in aqueous alkaline solution to release a photographically useful reagent; and n is an integer 3, 4 or 5.Type: GrantFiled: March 23, 1982Date of Patent: June 14, 1983Assignee: Polaroid CorporationInventors: Alan L. Borror, Ernest W. Ellis
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Patent number: 4382119Abstract: This invention relates to photographic products and processes employing silver halide solvent precursors of the formulae ##STR1## wherein R.sup.1 and R.sup.2, the same or different, each are hydrogen, alkyl, phenalkyl, phenyl or phenyl substituted with an electron-donating or electron-withdrawing group; R.sup.3 is alkyl, phenalkyl, phenyl or substituted phenyl; Z is --CN or --SO.sub.2 R.sup.4 wherein R.sup.4 is branched-chain alkyl, phenalkyl, phenyl or substituted phenyl; and n is an integer 3, 4 or 5.Type: GrantFiled: May 27, 1982Date of Patent: May 3, 1983Assignee: Polaroid CorporationInventors: Alan L. Borror, Ernest W. Ellis
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Patent number: 4367279Abstract: Certain organic, carbon acid silver halide complexing agents in a photographic diffusion transfer system provide suitable replacement for conventional silver halide complexing agents. Such organic, silver halide complexing agents include certain sulfones, nitriles and onium salts. These are especially useful in a silver salt diffusion transfer system. They can be employed with silver halide developing agents, such as in a monobath, and are especially suitable with a hydroxylamine silver halide developing agent. Other addenda commonly employed in photographic diffusion transfer systems can be employed in combination with these silver halide complexing agents.Type: GrantFiled: September 6, 1974Date of Patent: January 4, 1983Assignee: Eastman Kodak CompanyInventors: Arthur H. Herz, Daniel S. Daniel
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Patent number: 4362811Abstract: A processing solution composition for treating an image receiving layer in silver complex diffusion transfer process, which contains 1.7.times.10.sup.-3 to 1.7.times.10.sup.-2 mole/liter of a bromide and 2.0 to 12.0 mole-% of potassium ion based on total cations of the salts contained in the composition accelerates the transfer speed and gives a silver image high in maximum density, contrast and sharpness to the image.Type: GrantFiled: July 10, 1981Date of Patent: December 7, 1982Assignee: Mitsubishi Paper Mills Ltd.Inventors: Shigeru Iguchi, Shozi Oka
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Patent number: 4358528Abstract: A black-and-white negative image forming process is disclosed using a diffusion transfer type film unit. An exposed silver halide emulsion comprising internal latent image type silver halide grains which have substantially no fogging centers at their surface is processed with a composition comprising a silver halide solvent, a developing agent, a foggant, alkali and a fog promoting agent. The solvent for the silver halide characteristically possesses a solubilizing power for AgBr of from about 2.times.10.sup.-5 to 5.times.10.sup.-3 mol/l in a 0.002 molar aqueous solution.Type: GrantFiled: June 8, 1981Date of Patent: November 9, 1982Assignee: Fuji Photo Film Co., Ltd.Inventors: Yoshihiro Takagi, Katsumi Hayashi
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Patent number: 4355090Abstract: Method for making lithographic printing plates by silver salt diffusion transfer process is disclosed. That is, lithographic printing plates having excellent printing endurance are obtained by carrying out the diffusion transfer processing in the presence of a compound having the ring structure ##STR1## which may be present in at least one constitutive layer of the printing plate materials (photographic materials) used for making the printing plates or in the diffusion transfer processing solution.Type: GrantFiled: July 1, 1980Date of Patent: October 19, 1982Assignee: Mitsubishi Paper Mills, Ltd.Inventors: Shoji Yamada, Eiji Kanada, Kozo Haino
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Patent number: 4353976Abstract: There are described photographic products, processes and compositions wherein cyclic crown ether ligands are utilized as silver halide solvents. Also disclosed are novel cyclic crown ether ligands.Type: GrantFiled: October 30, 1980Date of Patent: October 12, 1982Assignee: Polaroid CorporationInventors: Stanley M. Bloom, deceased, Krishna G. Sachdev
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Patent number: 4345018Abstract: Alkanes containing an intralinear sulfonyl group and a cyano group separated by a single carbon substituted with at least one hydrogen atom are employed as silver halide solvents in photographic processes and compositions.Type: GrantFiled: November 1, 1976Date of Patent: August 17, 1982Assignee: Polaroid CorporationInventors: Alan L. Borror, Richard B. Greenwald
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Patent number: 4324853Abstract: A processing composition adapted for use in a silver diffusion transfer process which includes a saturated polyol containing at least 3 hydroxyl groups wherein each hydroxyl group is no more than 3 carbon atoms away from another hydroxyl group.Type: GrantFiled: July 18, 1979Date of Patent: April 13, 1982Assignee: Polaroid CorporationInventor: Michael Berger
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Patent number: 4310613Abstract: A liquid processing composition for silver complex diffusion transfer process which contains the specific quaternary ammonium salts as defined in the specification prevents formation of colored sludge for a long time without damaging characteristics of silver complex diffusion transfer development and improves color tone of silver images obtained.Type: GrantFiled: May 14, 1980Date of Patent: January 12, 1982Assignee: Mitsubishi Paper Mills, Ltd.Inventors: Shigeru Iguchi, Kazuhiro Emoto
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Patent number: 4309499Abstract: A black-and-white negative image forming process is disclosed using a diffusion transfer type film unit. An exposed silver halide emulsion comprising internal latent image type silver halide grains which have substantially no fogging centers at their surface is processed with a composition comprising a silver halide solvent, a developing agent, a foggant, alkali and a fog promoting agent. The solvent for the silver halide characteristically possesses a solubilizing power for AgBr of from about 2.times.10.sup.-5 to 5.times.10.sup.-3 mol/l in a 0.002 molar aqueous solution.Type: GrantFiled: November 14, 1979Date of Patent: January 5, 1982Assignee: Fuji Photo Film Co., Ltd.Inventors: Yoshihiro Takagi, Katsumi Hayashi
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Patent number: 4299908Abstract: A method for forming a negative image comprising imagewise exposing a photographic material to provide exposed areas and unexposed areas, said material comprising, on a support, (1) an emulsion layer containing a light-sensitive silver halide, (2) unsensitized silver halide metallic salt grains which are more soluble in a developer than the light sensitive silver halide, and (3) nuclei for physical development, processing said material in the presence of a reducing agent and a solvent for said grains with said developer containing a substance which renders said grains less soluble by adsorbing thereto, said developer rendering said grains in said exposed areas and not in said unexposed areas soluble in said solvent, whereby metal ions are released and deposited on said nuclei.Type: GrantFiled: April 10, 1980Date of Patent: November 10, 1981Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Noboru Ito, Eiichi Sakamoto, Mikio Kawasaki, Takashi Uchida
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Patent number: 4298684Abstract: A reflective laser recording and data storage medium, for direct reading after writing, formed from a photosensitive silver-halide emulsion including silver precipitating nuclei. A single step negative silver diffusion transfer process is used to develop silver nuclei of the latent image and dissolve unexposed silver halide elsewhere, forming silver ion complexes. These complexes are transported by diffusion transfer to the developing silver nuclei sites where silver is precipitated and adsorbed to form a high concentration of non-filamentary particles at a surface of a low melting temperature dielectric matrix which is highly reflective of light and electrically non-conducting.Type: GrantFiled: June 20, 1980Date of Patent: November 3, 1981Assignee: Drexler Technology CorporationInventors: Eric W. Bouldin, Jerome Drexler
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Patent number: 4298677Abstract: A silver diffusion transfer photographic process using a silver halide photosensitive emulsion layer comprising silver iodochlorobromide or silver iodobromide wherein the iodide comprises from about 6 to 25 mole % of the halide content.Type: GrantFiled: June 9, 1980Date of Patent: November 3, 1981Assignee: Fuji Photo Film Co., Ltd.Inventors: Yoshihiro Takagi, Masakado Sakai
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Patent number: 4297429Abstract: Lithographic printing plates having high ink receptivity, suffuring no ink stains and having much improved printing endurance can be produced by silver complex diffusion transfer process from lithographic printing plate materials comprising a support having thereon at least both silver halide emulsion layer and physical development nuclei layer wherein the diffusion transfer processing is carried out in the presence of 2-mercaptobenzoic acid derivatives or, besides this 2-mercaptobenzoic acid derivatives, at least one compound selected from the group consisting of alkanolamines and cyclic imide compounds which may be contained in at least one layers of the lithographic printing plate materials and/or the diffusion transfer developing solutions.Type: GrantFiled: June 11, 1980Date of Patent: October 27, 1981Assignee: Mitsubishi Paper Mills, Ltd.Inventors: Eiji Kanada, Shoji Yamada, Yasuo Tsubai
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Photographic material for production of printing plates and method for production of printing plates
Patent number: 4297430Abstract: In production of lithographic printing plates by developing a photographic material comprising a support having thereon at least both silver halide emulsion layer and physical development nuclei layer by silver complex diffusion transfer process to form transfer silver to be used as ink-receptive portions of the lithographic printing plates, when the development is carried out in the presence of a cyclic imide compound (alone or in combination with sulfites, thiosulfates, thiocyanates or alkanolamines) as defined hereinafter, ink-receptivity of the transfer silver image portions and printing endurance of thus obtained printing plates are improved. Moreover, the non-image portions have no or substantially no stains.Type: GrantFiled: August 1, 1980Date of Patent: October 27, 1981Assignee: Mitsubishi Paper Mills, Ltd.Inventors: Eiji Kanada, Shoji Yamada, Yasuo Tsubai -
Patent number: 4272632Abstract: There are described novel acyclic silver complexing agents which are useful as silver halide solvents in photographic products, processes and compositions. Also disclosed are photographic compositions, products and processes in which the complexing agents are utilized.Type: GrantFiled: June 16, 1980Date of Patent: June 9, 1981Assignee: Polaroid CorporationInventors: Krishna G. Sachdev, Stanley M. Bloom, deceased
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Patent number: 4267254Abstract: There is described a photograhic method employing a positive-negative diffusion transfer film unit wherein there is formed a positive silver transfer image which may be viewed as a positive transparency without being separated from the developed negative silver image, including an embodiment wherein additive color projection positive images are formed. According to the method, the exposed film unit is developed by contacting the silver halide emulsion layer with a photographic processing composition which comprises an aqueous alkaline solution containing a silver halide developing agent and a silver complexing agent. The silver complexing agent is stable in an alkaline environment, has a melting point less than about 50.degree. C. preferably about 25.degree. C. or less, and the log of the stability constant (.beta.) for a 1:1 complex of the complexing agent with silver is at least about 10.5. The film unit is not washed during the method.Type: GrantFiled: October 1, 1979Date of Patent: May 12, 1981Assignee: Polaroid CorporationInventors: Stanley M. Bloom, deceased, Krishna G. Sachdev
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Patent number: 4267256Abstract: There are described photographic products, processes and compositions wherein cyclic crown ether ligands are utilized as silver halide solvents. Also disclosed are novel cyclic crown ether ligands.Type: GrantFiled: October 1, 1979Date of Patent: May 12, 1981Assignee: Polaroid CorporationInventors: Stanley M. Bloom, deceased, Krishna G. Sachdev
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Patent number: 4267255Abstract: A processing composition adapted for use in a silver diffusion transfer film unit which comprises an aqueous alkaline solution, a silver halide developing agent and a surfactant comprising a hydrophobe and a polyethylene oxide portion containing an average of about 5-25 repeating units of ethylene oxide per hydrophobe.Type: GrantFiled: December 12, 1979Date of Patent: May 12, 1981Assignee: Polaroid CorporationInventor: Karl J. Schreiber
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Patent number: 4251617Abstract: There are described novel acyclic silver complexing agents which are useful as silver halide solvents in photographic products, processes and compositions. Also disclosed are photographic compositions, products and processes in which the complexing agents are utilized.Type: GrantFiled: October 1, 1979Date of Patent: February 17, 1981Assignee: Polaroid CorporationInventors: Stanley M. Bloom, deceased, Krishna G. Sachdev
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Patent number: 4204868Abstract: A photolithographic plate, method for preparation thereof, and salt compound useful in the preparation, the method involving the treatment of a metallic silver image on a substrate with a homogeneously stable acidic aqueous salt solution comprising a ferricyanide anion for oxidizing the metallic silver and an organic cation capable of forming a water-insoluble, inherently oleophilic complex with oxidized silver, the cation being derived from a protonatable nitrogen-substituted hydrocarbon compound containing a formal imine group therein which is in resonant association with adjacent groups within the hydrocarbon compound.Type: GrantFiled: November 7, 1977Date of Patent: May 27, 1980Assignee: Minnesota Mining and Manufacturing CompanyInventor: David R. Boston