Processing With Identified Silver Or Silver Salt Complexing Agent Patents (Class 430/251)
  • Patent number: 4782013
    Abstract: 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: Grant
    Filed: July 23, 1987
    Date of Patent: November 1, 1988
    Assignee: Eastman Kodak Company
    Inventors: Arthur H. Herz, Roger L. Klaus
  • Patent number: 4775614
    Abstract: 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: Grant
    Filed: October 20, 1986
    Date of Patent: October 4, 1988
    Assignee: Agfa-Gevaert N.V.
    Inventor: Gino L. De Rycke
  • Patent number: 4713313
    Abstract: 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: Grant
    Filed: May 2, 1984
    Date of Patent: December 15, 1987
    Assignee: Polaroid Corporation
    Inventors: James R. Bartels-Keith, deceased, Anthony J. Puttick, Lloyd D. Taylor
  • Patent number: 4695535
    Abstract: 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: Grant
    Filed: December 29, 1986
    Date of Patent: September 22, 1987
    Assignee: Eastman Kodak Company
    Inventors: Philip S. Bryan, Arthur H. Herz
  • Patent number: 4693955
    Abstract: 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: Grant
    Filed: March 18, 1985
    Date of Patent: September 15, 1987
    Assignee: Mitsubishi Paper Mills, Ltd.
    Inventors: Koichi Torizuka, Kiyoshi Futaki
  • Patent number: 4690885
    Abstract: 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: Grant
    Filed: October 16, 1985
    Date of Patent: September 1, 1987
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Morio Yagihara, Akihiko Ikegawa
  • Patent number: 4649096
    Abstract: 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: Grant
    Filed: April 2, 1985
    Date of Patent: March 10, 1987
    Assignee: Mitsubishi Paper Mills, Ltd.
    Inventors: Yasuo Tsubai, Koji Okazaki, Shoichi Horii, Akio Yoshida
  • Patent number: 4632896
    Abstract: 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: Grant
    Filed: September 10, 1985
    Date of Patent: December 30, 1986
    Assignee: Mitsubishi Paper Mills, Ltd.
    Inventors: Yasuo Tsubai, Koji Okazaki
  • Patent number: 4624911
    Abstract: 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: Grant
    Filed: February 27, 1985
    Date of Patent: November 25, 1986
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Yoshio Idota, Morio Yagihara
  • Patent number: 4604339
    Abstract: 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: Grant
    Filed: November 30, 1983
    Date of Patent: August 5, 1986
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Tadao Sugimoto, Hideo Ikeda, Hiroyuki Mifune, Koki Nakamura
  • Patent number: 4503139
    Abstract: 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: Grant
    Filed: May 9, 1983
    Date of Patent: March 5, 1985
    Assignee: Polaroid Corporation
    Inventors: James R. Bartels-Keith, Roger A. Boggs, Anthony J. Puttick, Nancy M. Sofen
  • Patent number: 4388398
    Abstract: 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: Grant
    Filed: March 23, 1982
    Date of Patent: June 14, 1983
    Assignee: Polaroid Corporation
    Inventors: Alan L. Borror, Ernest W. Ellis
  • Patent number: 4382119
    Abstract: 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: Grant
    Filed: May 27, 1982
    Date of Patent: May 3, 1983
    Assignee: Polaroid Corporation
    Inventors: Alan L. Borror, Ernest W. Ellis
  • Patent number: 4367279
    Abstract: 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: Grant
    Filed: September 6, 1974
    Date of Patent: January 4, 1983
    Assignee: Eastman Kodak Company
    Inventors: Arthur H. Herz, Daniel S. Daniel
  • Patent number: 4362811
    Abstract: 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: Grant
    Filed: July 10, 1981
    Date of Patent: December 7, 1982
    Assignee: Mitsubishi Paper Mills Ltd.
    Inventors: Shigeru Iguchi, Shozi Oka
  • Patent number: 4358528
    Abstract: 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: Grant
    Filed: June 8, 1981
    Date of Patent: November 9, 1982
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Yoshihiro Takagi, Katsumi Hayashi
  • Patent number: 4355090
    Abstract: 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: Grant
    Filed: July 1, 1980
    Date of Patent: October 19, 1982
    Assignee: Mitsubishi Paper Mills, Ltd.
    Inventors: Shoji Yamada, Eiji Kanada, Kozo Haino
  • Patent number: 4353976
    Abstract: 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: Grant
    Filed: October 30, 1980
    Date of Patent: October 12, 1982
    Assignee: Polaroid Corporation
    Inventors: Stanley M. Bloom, deceased, Krishna G. Sachdev
  • Patent number: 4345018
    Abstract: 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: Grant
    Filed: November 1, 1976
    Date of Patent: August 17, 1982
    Assignee: Polaroid Corporation
    Inventors: Alan L. Borror, Richard B. Greenwald
  • Patent number: 4324853
    Abstract: 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: Grant
    Filed: July 18, 1979
    Date of Patent: April 13, 1982
    Assignee: Polaroid Corporation
    Inventor: Michael Berger
  • Patent number: 4310613
    Abstract: 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: Grant
    Filed: May 14, 1980
    Date of Patent: January 12, 1982
    Assignee: Mitsubishi Paper Mills, Ltd.
    Inventors: Shigeru Iguchi, Kazuhiro Emoto
  • Patent number: 4309499
    Abstract: 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: Grant
    Filed: November 14, 1979
    Date of Patent: January 5, 1982
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Yoshihiro Takagi, Katsumi Hayashi
  • Patent number: 4299908
    Abstract: 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: Grant
    Filed: April 10, 1980
    Date of Patent: November 10, 1981
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Noboru Ito, Eiichi Sakamoto, Mikio Kawasaki, Takashi Uchida
  • Patent number: 4298684
    Abstract: 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: Grant
    Filed: June 20, 1980
    Date of Patent: November 3, 1981
    Assignee: Drexler Technology Corporation
    Inventors: Eric W. Bouldin, Jerome Drexler
  • Patent number: 4298677
    Abstract: 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: Grant
    Filed: June 9, 1980
    Date of Patent: November 3, 1981
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Yoshihiro Takagi, Masakado Sakai
  • Patent number: 4297429
    Abstract: 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: Grant
    Filed: June 11, 1980
    Date of Patent: October 27, 1981
    Assignee: Mitsubishi Paper Mills, Ltd.
    Inventors: Eiji Kanada, Shoji Yamada, Yasuo Tsubai
  • Patent number: 4297430
    Abstract: 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: Grant
    Filed: August 1, 1980
    Date of Patent: October 27, 1981
    Assignee: Mitsubishi Paper Mills, Ltd.
    Inventors: Eiji Kanada, Shoji Yamada, Yasuo Tsubai
  • Patent number: 4272632
    Abstract: 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: Grant
    Filed: June 16, 1980
    Date of Patent: June 9, 1981
    Assignee: Polaroid Corporation
    Inventors: Krishna G. Sachdev, Stanley M. Bloom, deceased
  • Patent number: 4267254
    Abstract: 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: Grant
    Filed: October 1, 1979
    Date of Patent: May 12, 1981
    Assignee: Polaroid Corporation
    Inventors: Stanley M. Bloom, deceased, Krishna G. Sachdev
  • Patent number: 4267256
    Abstract: 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: Grant
    Filed: October 1, 1979
    Date of Patent: May 12, 1981
    Assignee: Polaroid Corporation
    Inventors: Stanley M. Bloom, deceased, Krishna G. Sachdev
  • Patent number: 4267255
    Abstract: 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: Grant
    Filed: December 12, 1979
    Date of Patent: May 12, 1981
    Assignee: Polaroid Corporation
    Inventor: Karl J. Schreiber
  • Patent number: 4251617
    Abstract: 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: Grant
    Filed: October 1, 1979
    Date of Patent: February 17, 1981
    Assignee: Polaroid Corporation
    Inventors: Stanley M. Bloom, deceased, Krishna G. Sachdev
  • Patent number: 4204868
    Abstract: 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: Grant
    Filed: November 7, 1977
    Date of Patent: May 27, 1980
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: David R. Boston