Cobalt Complex Containing Patents (Class 430/936)
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Patent number: 8855903Abstract: Systems and methods for providing incentives for the public to travel during time windows and routes that help alleviate traffic congestion. The systems described herein include at least two components: a computer server software system that includes various algorithms and database sub-systems; and a mobile device application. Generally, a user may enter an origin, destination, and preferred time of travel for an intended trip into the mobile device application, which transmits the information to a remote server. The server computes a route for the trip and provides the user with available incentives for traveling the route at one or more departure time windows. The user's mobile device transmits GPS data to the server, which allows the server to verify whether the user has traveled the route during the specified time window. If so, the server then provides the incentive to the user via the user's mobile device or through email.Type: GrantFiled: April 18, 2014Date of Patent: October 7, 2014Assignees: The Arizona Board of Regents on Behalf of the University of Arizona, The University of Arizona, Tech Transfer ArizonaInventor: Yi-Chang Chiu
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Patent number: 6372419Abstract: A silver halide photographic material comprising a support having provided thereon at least a silver halide emulsion layer, wherein the material contains at least one metal complex contained in any of groups A, B and C: group A: an optically active metal complex; group B: a metal complex comprising a metal ion selected from the group consisting of transition metallic elements belonging to period 4 to 6 and group III to XI of the Periodic Table, and typical metallic elements belonging to period 4 to 6 and group XII to XIV of the Periodic Table, and at least one ligand represented by the following formula (I): wherein Z represents an atomic group to form a 5- or 6-membered ring; A represents a carbon atom or a nitrogen atom; X represents O31, S31 , NR1R2 or COO−; R1 and R2 each represents a hydrogen atom or an alkyl group; R represents a substituent; and n represents 0 or an integer of from 1 to 6; group C: a metal complex selected from a porphyrin complex, a porphycene complex, a phtType: GrantFiled: July 12, 2000Date of Patent: April 16, 2002Assignee: Fuji Photo Film Co., Ltd.Inventors: Tadashi Inaba, Tadanobu Sato, Kohzaburoh Yamada, Takahiro Matsuno
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Patent number: 6303281Abstract: A silver halide photographic element comprises a support having thereon at least one light-sensitive silver halide emulsion layer and a light-insensitive protective layer, the light-insensitive protective layer comprising an ultraviolet absorbing layer closer to the support and an outermost protective layer, the ultraviolet absorbing layer comprising an ultraviolet aborbing dye, a high boiling organic solvent, and a hydrophilic binder, the outermost protective layer comprising insoluble matte particles having a mean particle size of larger than 0.5 &mgr;m, dispersed polymer particles having a mean size of less than 0.2 &mgr;m, and a glass transition temperature of at least 70° C., and a hydrophilic binder.Type: GrantFiled: February 21, 1996Date of Patent: October 16, 2001Assignee: Eastman Kodak CompanyInventors: Yongcai Wang, Melvin Michael Kestner, Alfred Bruce Fant, Dennis Edward Smith
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Patent number: 5702873Abstract: A redox-amplification solution comprising hydrogen peroxide, or a substance capable of releasing hydrogen peroxide, or reducing agent, such as a color developing agent, and in combination three or more sequestering agents for complexing with a transition metal ion to inhibit catalysis of impurities emanating from a photographic film coating and enhance the stability of the solution; a method of photographic color processing including a step using the redox-amplification solution and its use therefor.Type: GrantFiled: April 10, 1996Date of Patent: December 30, 1997Assignee: Eastman Kodak CompanyInventor: Peter Jeffery Twist
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Patent number: 5698363Abstract: An image forming method is disclosed.Type: GrantFiled: July 8, 1996Date of Patent: December 16, 1997Assignee: Konica CorporationInventors: Ai Katsuda, Hiroshi Watanabe, Tomonori Kawamura, Toshihisa Takeyama, Kunihiro Koshizuka
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Patent number: 5683858Abstract: A photographic bleach solution contains hydrogen peroxide, or a compound capable of releasing hydrogen peroxide, and two or more sequestering agents capable of complexing with a transition metal. The bleach solution ha a pH in the alkaline range. A method of using such a photographic bleach solution is also disclosed.Type: GrantFiled: June 19, 1996Date of Patent: November 4, 1997Assignee: Eastman Kodak CompanyInventor: John Richard Fyson
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Patent number: 5629139Abstract: Photographic elements, especially color papers, can be processed with developer, redox amplification or bleaching solutions that contain hydrogen peroxide or other oxidants. These solutions include a dissolved compound that has a hydrophobic hydrocarbon group and an additional group that enables the compound to adsorb to silver or stainless steel. The dissolved compound inhibits the catalytic effect of the metal on decomposition of the hydrogen peroxide so the processing solutions are more stable.Type: GrantFiled: October 3, 1995Date of Patent: May 13, 1997Assignee: Eastman Kodak CompanyInventor: Peter J. Twist
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Patent number: 5506093Abstract: This invention relates to an imaging element for reductive laser-imaging comprising a support having thereon an imaging layer comprising:a) a reducible Co(III) ammine complex,b) a source of phthalaldehyde, andc) a reducing agent,the imaging layer having an infrared-absorbing material associated therewith in the amount of about 0.001 to about 0.5 g/m.sup.2 of element.Type: GrantFiled: January 30, 1995Date of Patent: April 9, 1996Assignee: Eastman Kodak CompanyInventors: Mark S. Kaplan, Mitchell S. Burberry, Charles D. DeBoer, Lee W. Tutt
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Patent number: 5476755Abstract: An image forming element and an image forming method using the same are disclosed. The element comprises a support having thereon a image forming layer comprising a binder, an aromatic aldehyde, a cobalt (III) complex represented by formula I, and a compound represented by formula II or formula III;Co.sup.3 +(L)p(X)q (I)wherein L is a coordination compound capable of forming a complex compound with the cobalt cation and at least one of which is NH.sub.3 or a primary amine; X is a counter anion; p is an integer of 1 to 6; when p is 2 to 6, the plural Ls may be the same or different; and q is an integer of 1 to 3, ##STR1## wherein lig is a coordination compound capable of forming with the cobalt cation; R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are each independently an alkyl group, an aryl group, an aralkyl group, an alkenyl group, an alkinyl group, a cycloalkyl group, a heterocyclic group or a cyano group; n.sub.1 is an integer of 1 to 6, when n.sub.Type: GrantFiled: November 14, 1994Date of Patent: December 19, 1995Assignee: Konica CorporationInventors: Noritaka Nakayama, Norio Miura, Yoriko Nakayama, Tawara Komamura, Toshihisa Takeyama
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Patent number: 5439784Abstract: A method for replenishing an unstable photographic processing solution is disclosed, including the following replenisher solutions:(1) a color developer replenisher,(2) an oxidizing agent replenisher, and(3) a halide-containing seasoning replenisher (starter solution).The oxidizing agent is not removed from the developer/amplifier after use.Type: GrantFiled: October 19, 1992Date of Patent: August 8, 1995Assignee: Eastman Kodak CompanyInventors: Andrew D. Grimsey, David M. Henson, Peter D. Marsden, Peter J. Twist
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Patent number: 5415984Abstract: An image forming element utilizing the photoreduction of a cobalt complex is disclosed. The image forming element comprises a support having thereon a layer comprising a cobalt complex compound represented by Formula 1 or Formula 2; ##STR1## wherein lig is a coordinating compound capable of forming a cobalt complex compound with a cobalt cation; R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are each independently an aryl group, an alkyl group, an alkenyl group, an alkynyl group, a cycloalkyl group, an aralkyl group, a heterocyclic group or a cyano group, provided that at least one of R.sup.1, R.sup.2, R.sup.3 and R.sup.4 is an alkyl group, an alkenyl group, an alkynyl group, a cycloalkyl group, an aralkyl group, a heterocyclic group or a cyano group, the above groups represented by R.sup.1, R.sup.2, R.sup.3 or R.sup.Type: GrantFiled: April 18, 1994Date of Patent: May 16, 1995Assignee: Konica CorporationInventors: Tawara Komamura, Noritaka Nakayama, Toshihisa Takeyama, Norio Miura
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Patent number: 5324624Abstract: An imagewise exposed photographic silver halide color material is treated in a first processing bath containing a developer solution comprising a color developing agent. After treatment in the first bath, the photographic material is treated in a second processing bath containing a developer/amplifier solution comprising an amplifying oxidant and the color developing agent, wherein developer solution is carried over with the photographic material from the first bath to the second bath. The second bath is replenished with developer/amplifier replenisher solution. The first bath is replenished with developer replenisher solution in sufficient volume to cause overflow of the developer solution from the first bath, which overflow is conveyed from the first bath to the second bath. The concentration of the color developing agent in the developer/amplifier solution of the second bath is maintained at 0.1 to 20 g/l.Type: GrantFiled: March 11, 1993Date of Patent: June 28, 1994Assignee: Eastman Kodak CompanyInventor: Peter J. Twist
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Patent number: 5300416Abstract: There is disclosed a silver halide photographic light-sensitive material which is improved in an antistatic property, curling before and after processing, and surface status after processing. The light-sensitive material includes a support having provided thereon at least one light-sensitive silver halide emulsion layer, wherein the material contains an anionic crosslinked polymer dispersion containing a polymer represented by Formula (I), and the material further contains an anionic water soluble polymer represented by Formula (II): ##STR1## wherein A represents a repetitive unit formed by copolymerizing a crosslinking monomer having at least two copolymerizable ethylenically unsaturated groups; B and E each represent a monomer unit formed by copolymerizing copolymerizable ethylenically unsaturated monomers; R.sup.Type: GrantFiled: July 8, 1992Date of Patent: April 5, 1994Assignee: Fuji Photo Film Co., Ltd.Inventors: Junichi Yamanouchi, Satoru Toda, Nobuaki Ohmori, Yuichi Ohashi
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Patent number: 5006446Abstract: A medium for image formation which comprises a monomolecular film or monomolecular built-up film of a metal chelate compound and a process for image formation which comprises (1) manipulating the adsorption of a gas on a metal chelate compound and the desorption of the gas therefrom or (2) reducing metal ions in molecules of a metal chelate compound.Type: GrantFiled: July 20, 1988Date of Patent: April 9, 1991Assignee: Canon Kabushiki KaishaInventors: Masahiro Haruta, Hiroshi Matsuda, Hirohide Munakata, Yukuo Nishimura
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Patent number: 4968586Abstract: A negative-working imaging composition suitable for use as a dry film resist, comprises, in admixture, (a) a polymeric binder, (b) a Co (III) compound capable of partial reduction to Co (II) upon exposure to activating radiation, and (c) a redox transfer ligand capable of reacting with Co (II) to form a Co (II) chelate which reduces adjacent remaining Co (III) compound and forms a Co (III) chelate effective to provide imagewise differential solubility to the composition. The composition can be imagewise exposed to activating radiation, such as a laser, heated, and developed with a developer to form a resist image in the exposed areas. An element comprising a support and a layer of the above-described composition is particularly useful in the manufacture of printed circuit boards by laser direct imaging.Type: GrantFiled: December 14, 1989Date of Patent: November 6, 1990Assignee: Eastman Kodak CompanyInventor: Thap DoMinh
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Patent number: 4954414Abstract: A composition including a cationic transition metal coordination complex and a borate anion, wherein said composition is capable of absorbing actinic radiation and producing free radicals which can initiate free radical addition polymerization of a free radical addition polymerizable or crosslinkable monomer is disclosed. The compositions are particularly useful as visible light photoinitiators.Type: GrantFiled: November 8, 1988Date of Patent: September 4, 1990Assignee: The Mead CorporationInventors: Paul C. Adair, Peter Gottschalk
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Patent number: 4880725Abstract: A color image is formed by imagewise exposing a color photosensitive material comprising at least a silver halide and a coupler and subjecting the material to intensified development with a processing solution containing a reducing agent and an intensifier. A substantially water-insoluble basic metal compound is previously contained in the silver halide based color photosensitive material, while the processing solution contains a compound capable of complexing reaction with the metal ion of the substantially water-insoluble basic metal compound to release a base.Type: GrantFiled: December 27, 1988Date of Patent: November 14, 1989Assignee: Fuji Photo Film Co., Ltd.Inventors: Hiroyuki Hirai, Haruhiko Iwano
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Patent number: 4818665Abstract: A medium for image formation which comprises a monomolecular film or monomolecular built-up film of a metal chelate compound and a process for image formation which comprises (1) manipulating the adsorption of a gas on a metal chelate compound and the desorption of the gas therefrom or (2) reducing metal ions in molecules of a metal chelate compound.Type: GrantFiled: March 23, 1987Date of Patent: April 4, 1989Assignee: Canon Kabushiki KaishaInventors: Masahiro Haruta, Hiroshi Matsuda, Hirohide Munakata, Yukuo Nishimura
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Patent number: 4745043Abstract: A method for forming an image, which comprises heating a light-sensitive material comprising a support having thereon at least a light-sensitive silver halide, a binder, and a dye providing substance simultaneously with or after imagewise exposure thereof in the presence of water, a reducing agent, and at least one kind of intensifying agent. In accordance with the method of the present invention, images having a high density can be obtained in a short period of time using reduced amounts of silver and base. A heat-developable photographic material containing intensifying agent is also described.Type: GrantFiled: July 25, 1986Date of Patent: May 17, 1988Assignee: Fuji Photo Film Co., Ltd.Inventor: Hiroyuki Hirai
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Patent number: 4596876Abstract: Novel adducts of phthalaldehyde are disclosed, as well as imaging compositions and imaging elements incorporating them. A method is also disclosed for minimizing dimensional changes in the element during processing.Type: GrantFiled: September 14, 1983Date of Patent: June 24, 1986Assignee: Eastman Kodak CompanyInventors: Thap DoMinh, Max H. Stern
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Patent number: 4548897Abstract: A silver image and dye image are provided in a photothermographic element comprising a support bearing, in reactive association, (A) a silver compound capable of forming a silver image, and (B) a dye-forming combination comprising (a) a cobalt (III) amine complex capable of releasing ammonia or an amine at processing temperature in the presence of silver and (b) an aromatic 1,2-dialdehyde capable of forming a dye upon reaction with an amine or ammonia. Improvements are provided in such an element by a cyclic imide melt former-silver solvent which is capable of promoting dye formation at processing temperature. A silver image and dye image are formed in such an exposed photothermographic element upon thermal processing. The photothermographic element optionally can comprise a dye image receiver layer.Type: GrantFiled: May 31, 1984Date of Patent: October 22, 1985Assignee: Eastman Kodak CompanyInventor: Thap DoMinh
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Patent number: 4469773Abstract: A coupler containing in the coupling position a carbamoyloxy group ##STR1## upon oxidative coupling, releases a carbamic acid fragment that, in turn, is capable of thermally releasing ammonia or an amine. Such a carbamoyloxy substituted coupler and carbamic acid fragment are useful in imaging such as in photothermography and thermography. Ammonia or an amine released from the carbamic acid fragment enables imaging in imaging materials that are responsive to ammonia or an amine. The carbamoyloxy substituted coupler also generally is a dye-forming coupler that reacts with the oxidized form of a color developing agent to form a dye. An image is produced in an exposed photothermographic material comprising the carbamoyloxy substituted coupler by thermal development. An image is produced in a thermographic material comprising the carbamoyloxy substituted coupler and a color developing agent by imagewise heating the thermographic material.Type: GrantFiled: June 15, 1983Date of Patent: September 4, 1984Assignee: Eastman Kodak CompanyInventors: Anthony Adin, Csaba A. Kovacs, Delwyn E. Machiele
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Patent number: 4460682Abstract: A novel silver halide photographic element which contains a nondiffusible complex capable of releasing a diffusible, photographically useful material is disclosed.Said nondiffusible complex becomes active for ligand exchange upon reduction under alkalin conditions to release a diffusible, photographically useful material, said complex being represented by the following formula: ##STR1## wherein La is a quadridentate ligand group; Lb is a didentate ligand group; BALL is a ballast group; PHOTO is a photographically useful material group; Y is a counter ion; and r is the number of counter ions necessary for neutralizing the electric charge on the CO(III) complex.Type: GrantFiled: December 15, 1982Date of Patent: July 17, 1984Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Noboru Mizukura, Satoru Ikeuchi, Shunji Suginaka, Noriko Fujita
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Patent number: 4451556Abstract: Imaging compositions employing a tellurium compound, a reductant precursor, a masked reducing agent and a source of labile hydrogen are improved by the inclusion of a base which may be inorganic or organic. Suitable inorganic bases include alkali metal hydroxides, alkaline earth metal hydroxides and ammonium hydroxide. Suitable organic bases include amines and heterocyclic nitrogen atom containing compounds.Type: GrantFiled: June 28, 1982Date of Patent: May 29, 1984Assignee: Energy Conversion Devices, Inc.Inventor: Terry T. Yu
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Patent number: 4433037Abstract: A heat erasable photographic material comprises, in reactive association, in a suitable binder:(a) photographic silver halide;(b) a mild oxidizing agent which consists essentially of a cobalt(III) amine salt which, upon heating of the photographic material, will oxidize any latent image silver present in the photographic material; and(c) a weak complexing agent for the oxidized silver.Any latent image silver in the photographic material is erased upon brief uniform heating of the photographic material. The photographic material is light handleable prior to uniform heating. After uniform heating, the photographic material is capable of being imagewise exposed and processed to produce a developed silver image. The photographic material may comprise a selected silver halide developing agent.Type: GrantFiled: July 15, 1982Date of Patent: February 21, 1984Assignee: Eastman Kodak CompanyInventor: Thap DoMinh
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Patent number: 4430420Abstract: In a photothermographic silver halide material and process for preparing an enhanced silver image, an aminosulfonylhydrazone that is capable of developing an image in the photothermographic material and that is capable, upon oxidation, of releasing an aminosulfinic acid, which, in turn, thermally releases ammonia or amine provides a silver image in the photothermographic material and provides ammonia or amine for activation of an ammonia or amine responsive imaging material. After imagewise exposure of the photothermographic material, a silver image enhanced by an image in the ammonia or amine responsive imaging material is produced by heating the photothermographic material.Type: GrantFiled: August 27, 1982Date of Patent: February 7, 1984Assignee: Eastman Kodak CompanyInventor: Anthony Adin
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Patent number: 4421846Abstract: A photographic element containing a nondiffusible metal complex capable of releasing a diffusible photographically useful group. The complex contains at least one poly-dentate ligand which contains the photographically useful group. The complex may be activated when reduced under alkaline conditions to release the photographically useful group.Type: GrantFiled: December 23, 1981Date of Patent: December 20, 1983Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Satoru Ikeuchi, Masaru Kanbe, Jiro Takahashi, Ryuichiro Kobayashi, Shunji Suginaka, Noboru Mizukura
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Patent number: 4411984Abstract: A diphenylamine compound that is a precursor for a phenazine dye comprises, in an ortho position to the amine of the diphenylamine, a sulfonyldiamido group (--NHSO.sub.2 NHR) that is capable of releasing a sulfonylamine fragment upon oxidation. The diphenylamine compound upon oxidation intramolecularly cyclizes to a phenazine dye. The sulfonylamine fragment is capable of thermally releasing ammonia or an amine. The diphenylamine compound and sulfonylamine fragment are useful in imaging such as in photothermography. Ammonia or an amine thermally released from the sulfonylamine fragment enables imaging in imaging materials that are responsive to ammonia or an amine. The diphenylamine compound also generally is a silver halide developing agent.Type: GrantFiled: May 3, 1982Date of Patent: October 25, 1983Assignee: Eastman Kodak CompanyInventor: Rolf S. Gabrielsen
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Patent number: 4410623Abstract: Novel adducts of phthalaldehyde are disclosed, as well as imaging compositions and imaging elements incorporating them. A method is also disclosed for minimizing dimensional changes in the element during processing.Type: GrantFiled: June 15, 1981Date of Patent: October 18, 1983Assignee: Eastman Kodak CompanyInventors: Thap DoMinh, Max H. Stern
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Patent number: 4395483Abstract: A high contrast, chemically fogged direct positive type silver halide photosensitive material is described containing at least one ammine complex salt selected from those including cobalt, nickel, ruthenium or chromium, by which the contrast in the lower optical density region is improved while retaining superior Dmax and sensitivity.Type: GrantFiled: February 26, 1982Date of Patent: July 26, 1983Assignee: Fuji Photo Film Co., Ltd.Inventors: Terumi Matsuda, Shoji Ishiguro, Shigenori Moriuchi, Yoshiaki Suzuki
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Patent number: 4371609Abstract: A method of forming dye images by processing a photographic material containing imagewise distributed catalyzer substance in the presence of hydrogen peroxide, a coupler and certain aromatic primary amine compounds.Type: GrantFiled: July 16, 1981Date of Patent: February 1, 1983Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Makoto Kajiwara, Akihiko Miyamoto, Keiji Ohbayashi, Masaru Iwagaki
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Patent number: 4358404Abstract: Nondiffusible compounds are described having a releasable 6-arylazo-3-pyridinol magenta dye moiety or precursor thereof having the formula ##STR1## wherein: (a) R represents hydroxy or amino;(b) R.sup.1 represents hydrogen, a hydrolyzable moiety or CAR;(c) G represents carboxy; a hydrolyzable ester or a sulfamoyl group;(d) CAR represents a ballasted carrier moiety capable of releasing the diffusible 6-arylazo-3-pyridinol dye moiety or precursor thereof under alkaline conditions; and(e) n is 0, 1 or 2, with the proviso that when n is 0, then R.sup.1 is CAR; and wherein the phenyl ring is not substituted with a nitro group.These magenta dye-releasing compounds are used in photographic elements and diffusion transfer assemblages. The magenta dye moiety or precursor thereof is released as a function of development of a silver halide emulsion. The dye moiety then diffuses to an image-receiving layer where it forms a highly stable, metal-complexed dye transfer image.Type: GrantFiled: February 23, 1981Date of Patent: November 9, 1982Assignee: Eastman Kodak CompanyInventors: Derek D. Chapman, James A. Reczek
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Patent number: 4347307Abstract: A thermally processable imaging element and method are disclosed, wherein dimensional changes after thermal processing for about 5 seconds at a temperature of about 125.degree. C., do not exceed .+-.0.03%. The imaging element features an amine-generating and an amine-responsive composition. The method features preheating the element prior to exposure to dimensionally stabilize it.Type: GrantFiled: August 3, 1981Date of Patent: August 31, 1982Assignee: Eastman Kodak CompanyInventors: Raymond F. Limoges, Anthony A. Scribani, Robert J. Wilson
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Patent number: 4334005Abstract: A radiation-sensitive element is disclosed including a radiation-sensitive layer comprised of a cobalt(III)complex and a photoreductant. A process is disclosed in which the photoreductant is converted to a reducing agent by exposure to electromagnetic radiation longer than 300 nanometers. The reducing agent is then reacted with a cobalt(III)complex. Images can be recorded directly within the radiation-sensitive layer or in a separate image-recording element or layer by use of the residual cobalt(III)complex not exposed or one or more of the reaction products produced by exposure. By using the ammonia liberated from ammine ligand containing cobalt(III)complexes on exposure in combination with imagewise and uniform exposures, positive or negative images can be formed in diazo image-recording layers or elements associated with the radiation-sensitive layer. By the selection of amine-responsive reducing agent precursors, the amines released by the cobalt(III)complexes cause an amplified image.Type: GrantFiled: March 15, 1979Date of Patent: June 8, 1982Assignee: Eastman Kodak CompanyInventors: Anthony Adin, James C. Fleming
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Patent number: 4332884Abstract: A photo-sensitive and heat-sensitive composition consisting essentially of (a) a photooxidant, (b) a color-generator generating color when oxidized, (c) an acid promoting said color generation, (d) a cobalt (III) complex, (e) a photoreductant, (f) a hydrogen donator and (g) a chelating agent consisting of a dioxime compound having the general formula: ##STR1## (where n is an integer of 0 to 3, and R.sub.1 and R.sub.2 can each represent an alkyl, aryl or aralkyl group), and a recording element using the same.Type: GrantFiled: November 3, 1980Date of Patent: June 1, 1982Assignee: Ricoh Co., Ltd.Inventors: Koji Uji-Ie, Masaakira Umehara, Kiyoshi Taniguchi, Makoto Kunikane
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Patent number: 4324852Abstract: A radiation-sensitive element is disclosed including a radiation-sensitive layer comprised of a cobalt(III)complex and a photoreductant. A process is disclosed in which the photoreductant is converted to a reducing agent by exposure to electromagnetic radiation longer than 300 nanometers. The reducing agent is then reacted with a cobalt(III)complex. Images can be recorded directly within the radiation-sensitive layer or in a separate image-recording element or layer by use of the residual cobalt(III)complex not exposed or one or more of the reaction products produced by exposure. By using the ammonia liberated from ammine ligand containing cobalt(III)complexes on exposure in combination with imagewise and uniform exposures, positive or negative images can be formed in diazo image-recording layers or elements associated with the radiation-sensitive layer.Type: GrantFiled: June 7, 1979Date of Patent: April 13, 1982Assignee: Eastman Kodak CompanyInventors: Anthony Adin, James C. Fleming
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Patent number: 4318977Abstract: There is disclosed an image-forming composition and element comprising a cobalt(III) complex containing amine ligands, an aromatic dialdehyde which forms, in the presence of reduction products of the complex, a reducing agent for the complex, and an organic oxidizing agent to improve the image properties of the composition.Type: GrantFiled: February 23, 1981Date of Patent: March 9, 1982Assignee: Eastman Kodak CompanyInventor: Thap DoMinh
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Patent number: 4316953Abstract: Photographic emulsions are stabilized by a complex of cobalt with an aminocarboxylic acid.Type: GrantFiled: July 30, 1980Date of Patent: February 23, 1982Assignee: AGFA-Gevaert AktiengesellschaftInventor: Herbert Gernert
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Patent number: 4315068Abstract: A photo-sensitive and heat-sensitive composition consisting essentially of (a) a photooxidant, (b) a color-generator generating color when oxidized, (c) an acid promoting said color generation, (d) a cobalt (III) ammine and/or amine complex, (e) a photoreductant, (f) a hydrogen donator, (g) at least one kind of chelating agent selected from dioxime chelating agents having the general formula (I): ##STR1## (wherein n is an integer of 0 to 3, and R.sub.1 and R.sub.2 can each represent an alkyl, aryl or aralkyl group) and diantipyrylmethane chelating agents having the general formula (II): ##STR2## (wherein R.sub.3, R.sub.4, R.sub.5, R.sub.3 ', R.sub.4 ' and R.sub.5 ' can each represent a hydrogen atom and an alkyl or aryl group, and R.sub.6 and R.sub.7 can each represent a hydrogen atom and an alkyl, substituted or nonsubstituted aryl or aralkyl group), and (h) at least one kind of stabilizer selected from noble metal complexes, organic oxidants and organic acids, and a recording element using the same.Type: GrantFiled: January 28, 1981Date of Patent: February 9, 1982Assignee: Ricoh Co., Ltd.Inventors: Makoto Kunikane, Masaakira Umehara, Koji Uji-Ie, Kiyoshi Taniguchi
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Patent number: 4314019Abstract: A radiation-sensitive element is disclosed including a radiation-sensitive layer comprised of a cobalt(III)complex and a photoreductant. A process is disclosed in which the photoreductant is converted to a reducing agent by exposure to electromagnetic radiation longer than 300 nanometers. The reducing agent is then reacted with a cobalt(III)complex. Images can be recorded directly within the radiation-sensitive layer or in a separate image-recording element or layer by use of the residual cobalt(III)complex not exposed or one or more of the reaction products produced by exposure. By using the ammonia liberated from ammine ligand containing cobalt(III)complexes on exposure in combination with imagewise and uniform exposures, positive or negative images can be formed in diazo image-recording layers or elements associated with the radiation-sensitive layer. By the selection of amine-responsive reducing agent precursors, the amines released by the cobalt(III)complexes cause an amplified image.Type: GrantFiled: August 2, 1979Date of Patent: February 2, 1982Assignee: Eastman Kodak CompanyInventors: Anthony Adin, James C. Fleming
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Patent number: 4308341Abstract: There are disclosed an imaging composition, element and method featuring an aromatic dialdehyde that reacts with an exposure-generated amine to form a dye. The photographic speed of the reaction is improved by incorporating into the composition an imide capable of providing an ##STR1## moiety when heated.Type: GrantFiled: August 8, 1980Date of Patent: December 29, 1981Assignee: Eastman Kodak CompanyInventor: Thap DoMinh
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Patent number: 4308342Abstract: A thermally processable imaging element and method are disclosed, wherein dimensional changes after thermal processing for about 5 seconds at a temperature of about 125.degree. C., do not exceed .+-.0.03%. The imaging element features an amine-generating and an amine-responsive composition. The method features preheating the element prior to exposure to dimensionally stabilize it.Type: GrantFiled: October 31, 1980Date of Patent: December 29, 1981Assignee: Eastman Kodak CompanyInventors: Raymond F. Limoges, Anthony A. Scribani, Robert J. Wilson
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Patent number: 4306014Abstract: A photo-sensitive and heat-sensitive composition consisting essentially of a leuco-pigment; a hydrogen donator; a photo-reductant which, when exposed to a visible light, produces a reducing agent by the action of said hydrogen donator coexisting therewith; a photooxidant which, when exposed to an ultraviolet ray, causes said leuco-pigment coexisting therewith to generate color and simultaneously, when reacted with said reducing agent, is deprived of its own oxidizing ability; and a cobalt complex which reacts with the reducing agent in amplifying manner to thereby suppress the reaction of a color-forming system, and a recording element using the same.Type: GrantFiled: March 31, 1980Date of Patent: December 15, 1981Assignee: Ricoh Co., Ltd.Inventors: Makoto Kunikane, Akiyoshi Yasumori, Kiyoshi Taniguchi, Tetu Yamamuro
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Thermally responsive cobalt(III) complex imaging compositions having lowered activation temperatures
Patent number: 4294912Abstract: A dye-forming or imaging composition, element and method are disclosed, wherein a cobalt(III) complex containing releasable ligands is converted to cobalt(II) and the ligands by heating in the presence of a first destabilizer compound. The temperature at which the conversion reaction is initiated is unexpectedly lowered by the addition of a second, different destabilizer compound.Type: GrantFiled: July 17, 1980Date of Patent: October 13, 1981Assignee: Eastman Kodak CompanyInventors: Anthony Adin, John W. Boettcher, James C. Fleming -
Patent number: 4292399Abstract: There is disclosed an image-forming composition and element comprising a cobalt(III) complex, a reducing agent precursor which, in the presence of reduction products of the complex, forms a reducing agent for the complex, and an organic oxidizing agent to improve the image properties of the composition.Type: GrantFiled: October 22, 1979Date of Patent: September 29, 1981Assignee: Eastman Kodak CompanyInventor: Anthony Adin
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Patent number: 4284704Abstract: Imaging means, such as a tetrazolium salt, capable of reduction to form a visible image is present in a radiation-sensitive layer in combination with a photoreductant incorporating one or more labile hydrogen atoms and capable of producing a reducing agent precursor in radiation-struck areas of the layer. An image is produced in the layer by processing the layer after imagewise exposure to actinic radiation.Type: GrantFiled: September 29, 1978Date of Patent: August 18, 1981Assignee: Eastman Kodak CompanyInventors: James C. Fleming, Joseph W. Manthey, Ralph T. Brongo
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Patent number: 4273860Abstract: There is disclosed a cobalt(III) complex-containing photographic composition, element and process which can be made negative-working or positive-working. Featured are an exposure activatible image precursor composition and a photoinhibitor composition capable of inhibiting image formation in the image precursor composition.Type: GrantFiled: December 20, 1978Date of Patent: June 16, 1981Assignee: Eastman Kodak CompanyInventor: Anthony Adin
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Patent number: 4268617Abstract: A silver halide color photographic light-sensitive material comprising a support and at least one silver halide emulsion layer, at least one of the layers of said photographic sensitive material containing at least one compound selected from the group consisting of those compounds represented by the formulae (I), (II), (III) and (IV):[Co(NH.sub.3).sub.6 ][R.sup.1 COO].sub.3 (I)[Co(NH.sub.3).sub.6 ][R.sup.2 OOCR.sup.3 COO].sub.3 (II)[Co(NH.sub.3).sub.5 (R.sup.4 COO)]X.sub.2 (III)[Co(NH.sub.3).sub.5 (R.sup.5 NH.sub.2)]X.sub.3 (IV)wherein R.sup.1, R.sup.2 and R.sup.4 each represent an alkyl group having at least 3 carbon atoms or a fluorine-substituted alkyl group having at least 1 carbon atom; R.sup.3 is an alkylene group; R.sup.5 is an alkyl group having at least 1 carbon atom; X is a halogen atom, a nitrate ion, a sulfate ion, or a carboxylate ion is disclosed.Type: GrantFiled: September 27, 1979Date of Patent: May 19, 1981Assignee: Fuji Photo Film Co., Ltd.Inventors: Akio Mitsui, Yoshiaki Suzuki
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Patent number: 4247625Abstract: An imaging composition and element are disclosed wherein an aromatic dialdehyde reacts with amines generated in response to activating radiation. Improved binders are used to insure sufficient retention of the volatile dialdehyde prior to imaging.Type: GrantFiled: December 20, 1978Date of Patent: January 27, 1981Assignee: Eastman Kodak CompanyInventors: George L. Fletcher, Wojciech M. Przezdziecki, John C. Wilson, Paul D. Yacobucci, Richard C. Van Hanehem
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Patent number: 4243737Abstract: An image-forming element is disclosed comprised of a support and a coating thereon containing a cobalt(III)complex and a compound containing a conjugated .pi. bonding system capable of forming at least a bidentate chelate with cobalt(III). The coating is predominantly free of anions which will form conjugate acids by deprotonation of a cobalt(II)complex containing the chelating compound. In one preferred form the image-forming element is radiation-sensitive. In this form the image-forming element can contain a photoactivator capable of initiating reduction of the cobalt(III)complex. An imaging process is disclosed in which the coating is exposed to actinic radiation to produce an image. Images can be recorded directly within the image-forming coating or in a separate image-recording element or layer by use of the residual cobalt(III)complex or by use of one or more of the reaction products produced by exposure.Type: GrantFiled: November 25, 1977Date of Patent: January 6, 1981Assignee: Eastman Kodak CompanyInventor: Thap DoMinH