Naphthol Coupler Included Patents (Class 430/180)
  • Patent number: 7489369
    Abstract: A method of manufacturing an array substrate for a liquid crystal display device includes forming a gate line, a gate pad and a gate electrode on a substrate through a first mask process, forming a data line, a data pad, a source electrode, a drain electrode and an active layer on the substrate including the gate line, the gate pad and the gate electrode through a second mask process, wherein the data line crosses the gate line to define a pixel region, the source electrode is extended from the data line, the drain electrode is spaced apart from the source electrode, and the active layer is disposed between the gate electrode and the source and drain electrodes, forming a passivation layer on an entire surface of the substrate including the data line, the source electrode and the drain electrode through a third mask process, the passivation layer being etched to expose the substrate in the pixel region, a part of the drain electrode, the gate pad and the data pad, and forming a pixel electrode, a gate pad ter
    Type: Grant
    Filed: January 5, 2006
    Date of Patent: February 10, 2009
    Assignee: LG Display Co. Ltd.
    Inventors: Youn-Gyoung Chang, Heung-Lyul Cho, Soon-Sung Yoo
  • Patent number: 6855292
    Abstract: An automated in situ heat induced antigen recovery and staining method and apparatus for treating a plurality of microscope slides. The process of heat induced antigen recovery and the process of staining the biological sample on the microscope slide are conducted in the same apparatus, wherein the microscope slides do not need to by physically removed from one apparatus to another. Each treatment step occurs within the same reaction compartment. The reaction conditions of each reaction compartment for treating a slide can preferably be controlled independently, including the individualized application of reagents to each slide and the individualized treatment of each slide. The reagents are preferably held in a reagent dispensing strip similar to a “blister pack”.
    Type: Grant
    Filed: March 14, 2003
    Date of Patent: February 15, 2005
    Inventor: Lee Angros
  • Publication number: 20010012596
    Abstract: Compounds of the formulae I, II, III, IV and V 1
    Type: Application
    Filed: December 12, 2000
    Publication date: August 9, 2001
    Inventors: Kazuhiko Kunimoto, Hidetaka Oka, Masaki Ohwa, Junichi Tanabe, Hisatoshi Kura, Jean-Luc Birbaum
  • Patent number: 6180314
    Abstract: The present invention relates to the field of microscopic sample analysis, and specifically relates to a method for preparing thin microscopic samples of liquids.
    Type: Grant
    Filed: May 27, 1998
    Date of Patent: January 30, 2001
    Assignee: Becton, Dickinson and Company
    Inventor: Klaus W. Berndt
  • Patent number: 5696181
    Abstract: An improved denture adhesive composition is comprised of a highly cross-linked lower alkyl ether/maleic acid or maleic anhydride copolymer in which up to about 85% of the initial free carboxyl groups are reacted with one or more cross-linking agents. The cross-linking agents are mixtures of inorganic divalent cations such as calcium, magnesium and zinc together with organic bifunctional compounds comprised of polyhydroxyl compounds such as propylene glycol, glycerin and the like. The copolymer has a specific viscosity of no less than 1.5. A hydrophilic polymer such as sodium alginate or carboxymethyl cellulose may also be added to the lower alkyl vinyl ether/maleic acid or maleic anhydride copolymer which is then formulated with other excipients in a paste, powder, liquid, gel or cream composition.
    Type: Grant
    Filed: September 22, 1995
    Date of Patent: December 9, 1997
    Assignee: The Block Drug Company, Inc.
    Inventors: Tiang-Shing Chang, Donna DiFerdinando
  • Patent number: 5582952
    Abstract: A photosensitive lithographic printing plate which provides a wide range of proper conditions for development, high impression capacity, a flexible film sufficient in adhesion to a support and excellent processing suitability with a weakly alkaline developer (pH 12.5 or less) is disclosed. The photosensitive lithographic printing plate comprises a support and a photosensitive layer provided thereon, wherein the photosensitive layer is formed from a photosensitive composition containing at least a two-equivalent coupler residue-containing compound and a photosensitive compound or a photosensitive mixture acting as a positive type.
    Type: Grant
    Filed: March 7, 1995
    Date of Patent: December 10, 1996
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Koichi Kawamura, Keiji Akiyama, Toshifumi Inno, Katsuji Kitatani
  • Patent number: 5478689
    Abstract: A thermal development diazo copying material is composed of a support, and a photosensitive layer formed thereon, which includes a diazo compound, a coupler, an alkali-soluble resin, and a sensitizer, with only the coupler being contained in microcapsules made of the alkali-soluble resin.
    Type: Grant
    Filed: February 18, 1994
    Date of Patent: December 26, 1995
    Assignee: Ricoh Company, Ltd.
    Inventors: Masanori Rimoto, Shigeru Kusakata
  • Patent number: 5424164
    Abstract: A recording material which comprises a support having provided thereon capsules containing a photosensitive diazonium salt, and a polymerizable coupler. The recording material can give a predetermined hue when light, pressure, heat and the like are applied alone or in combination. The main advantages of the recording material are that a specific hue can be selected safely, mixing of colors can be avoided, desensitization problem does not occur and a fixed image can be obtained.
    Type: Grant
    Filed: November 10, 1994
    Date of Patent: June 13, 1995
    Assignee: Fuji Photo Film Co., Ltd
    Inventors: Masato Satomura, Ken Iwakura, Akira Igarashi
  • Patent number: 5389491
    Abstract: A negative working resist composition comprising (a) an alkali-soluble resin, (b) an aromatic compound having at least two groups of the formula: --OCH.sub.2 OR.sup.1 wherein R.sup.1 is alkyl or aralkyl, (c) a photoacid generator, and (d) a solvent, can form fine patterns with high resolution when exposed to deep UV, KrF excimer laser light, etc. due to high light transmittance and high sensitivity.
    Type: Grant
    Filed: June 28, 1993
    Date of Patent: February 14, 1995
    Assignees: Matsushita Electric Industrial Co., Ltd., Wako Pure Chemical Industries, Ltd.
    Inventors: Yoshiyuki Tani, Masayuki Endo, Fumiyoshi Urano, Takanori Yasuda
  • Patent number: 5338642
    Abstract: A novel diazo type recording material is provided comprising a recording layer containing at least one light-sensitive diazo compound incorporated in microcapsules and a coupling component which undergoes reaction with said diazo compound in a basic atmosphere to develop a color on a support, wherein said coupling component is a mixture of at least one compound represented by the following general formula [I] and at least one compound represented by the following general formula [II]: ##STR1## wherein A represents an alkylene group having from 1 to 22 carbon atoms containing an ether or thioether bond; B represents hydrogen atom, cyclohexyl group, morpholino group or piperidino group; and R.sub.1, R.sub.2, R.sub.3 and R.sub.4 each represent hydrogen atom, an alkyl group having from 1 to 5 carbon atoms, alkoxy group having from 1 to 5 carbon atoms or halogen atom.
    Type: Grant
    Filed: December 28, 1992
    Date of Patent: August 16, 1994
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Toshiharu Tanaka, Sadao Ishige, Takekatsu Sugiyama, Hirokazu Shimada
  • Patent number: 5328796
    Abstract: A diazo type recording material, which has a substantially unstained background, a superior preservability, and is capable of producing images of high density, wherein the diazo recording material comprises a support having thereon a recording layer comprising a photosensitive diazo compound, a hydroxyphenylsulfone derivative and a coupling component which forms a color by reacting with the diazo compound, with the diazo compound being enclosed in microcapsules.
    Type: Grant
    Filed: April 28, 1993
    Date of Patent: July 12, 1994
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Akihiro Shimomura, Taketatsu Sugiyama, Makoto Ohno, Toshiharu Tanaka
  • Patent number: 5236800
    Abstract: A heat-developable copying material comprising a support having thereon a heat-developable light-sensitive layer comprising microcapsules containing a diazo compound and substantially no solvent, a coupling component and a color basic substance.
    Type: Grant
    Filed: April 12, 1989
    Date of Patent: August 17, 1993
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Kotaro Nakamura, Hirokazu Shimada
  • Patent number: 5225309
    Abstract: Disclosed is a light-sensitive litho printing plate comprising:a support, a light-sensitive layer and a silicone rubber layer provided thereon,wherein said light-sensitive layer contains a substance,whereby said substance forms a color during developing or after developing.
    Type: Grant
    Filed: March 19, 1992
    Date of Patent: July 6, 1993
    Assignees: Konica Corporation, Mitsubishi Kasei Corporation
    Inventors: Norihito Suzuki, Kiyoshi Goto, Hiroshi Tomiyasu, Kazuo Noguchi, Akeo Kasakura
  • Patent number: 4957847
    Abstract: A heat-sensitive recording material comprising a base and, on top of the said base, a heat-sensitive layer containing a cyclic diazo component and a coupling component, the cyclic diazo component being a benzotriazine compound of the formula ##STR1## wherein Q is --CH.sub.2 --, --CO-- or --SO.sub.2 --, R is hydrogen, hydroxyl, or aryl or alkenyl, each unsubstituted or substituted by halogen, hydroxyl, cyano, lower alkoxy, lower alkylthio, acyloxy, lower alkoxycarbonyl or lower alkylsulfonyl, or is acyl, acyloxy or acylamino, cycloalkyl, or is aryl or aralkyl such as phenyl, phenylalkyl or naphthyl each unsubstituted or substituted on the ring by cyano, halogen, nitro, trifluoromethyl, lower alkyl, lower alkylthio, lower alkoxy, lower alkylcarbonyl or lower alkoxycarbonyl, or is a heterocyclic radical, and the benzene ring A is unsubstituted or substituted by halogen, cyano, nitro, lower alkyl, lower alkoxy, lower alkylthio, lower alkylcarbonyl or lower alkoxycarbonyl.
    Type: Grant
    Filed: December 2, 1988
    Date of Patent: September 18, 1990
    Assignee: Ciba-Geigy Corporation
    Inventors: Jean-Marie Adam, Hans Baumann
  • Patent number: 4937170
    Abstract: A photographic element formed from a substrate and light sensitive coating on the substrate wherein the coating comprises a mixture of a diazo compound and an aromatic carboxylic coupling agent having phenolic hydroxy groups, in an acidic medium.
    Type: Grant
    Filed: March 1, 1988
    Date of Patent: June 26, 1990
    Assignee: Hoechst Celanese Corporation
    Inventor: Dieter Mohr
  • Patent number: 4895826
    Abstract: A heat-sensitive recording material is disclosed, which comprises a support having thereon a heat-sensitive recording layer comprising a diazo compound and a coupler precursor compound, said coupler precursor compound being capable of forming a compound having an ability of coupling with said diazo compound upon heating.
    Type: Grant
    Filed: April 25, 1988
    Date of Patent: January 23, 1990
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Katsuhiko Watanabe, Takayuki Hayashi, Hiroshi Kamikawa, Masato Satomura, Takekatsu Sugiyama
  • Patent number: 4828957
    Abstract: Disclosed is a two-color heat-sensitive recording material which comprises a base sheet and a recording layer of single-layer or multi-layer structure formed on the base sheet, the recording layer comrising:(a) a diazonium salt,(b) a basic leuco dye,(c) a 2-hydroxy-3-naphthoic acid derivative which acts as a coupler compound for causing the diazonium salt to develop color when heated and which also acts as a color developing material for causing the basic leuco dye to develop color when heated, and(d) a basic substance, wherein the diazonium salt and the basic leuco dye each form a color upon application of heat, thereby giving the first image of a mixed color, and, then, after irradiation of an active ray to decompose the diazonium salt, the basic leuco dye alone forms its own color upon application of heat, thereby giving the second image whose color is different from the mixed color of the first image.
    Type: Grant
    Filed: May 26, 1987
    Date of Patent: May 9, 1989
    Assignee: Kanzaki Paper Manufacturing Company, Ltd.
    Inventors: Naoki Yonese, Tosaku Okamoto, Mitsuru Kondo
  • Patent number: 4743524
    Abstract: Diazotypes with new yellow coupler with an active methylene group are disclosed; the couplers do not migrate and excel by their relatively reduced coupling speed for greatly improved shelf life of diazotypes. In preferred embodiments the improved new diazotypes contain acetoacetoxyethyl methacrylate or acrylate as yellow coupler.
    Type: Grant
    Filed: October 17, 1986
    Date of Patent: May 10, 1988
    Assignee: Andrews Paper & Chemical Co., Inc.
    Inventors: Peter Muller, Henry Mustacchi, Leonard Kreicas
  • Patent number: 4668615
    Abstract: A heat developable light-sensitive material containing a compound represented by the general formula (I):[Ar.sub.n (R).sub.3-n CCO.sub.2 H].sub.l .multidot.B.sub.m (I)wherein ar represents an aryl group or a heterocyclic group; R represents a substituent other than an aryl group and a heterocyclic group; Ar and R may be bonded in a part thereof to form a ring; B represents a mono- or diacidic base which has a pKa of 7 or more and contains 12 or less carbon atoms; n represents an integer from 1 to 3; l and m each represents an integer of 1 or 2 and maintain a relationship in that a number of positive charge and a number of negative charge are equal; when n represents 1 or 2, two R's or Ar's may be the same or different, when n represents 3, three Ar's may be the same or different; and the substituent represented by Ar or R may be further substituted with a substituent.
    Type: Grant
    Filed: August 21, 1985
    Date of Patent: May 26, 1987
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Ken Kawata, Yoshiharu Yabuki, Kozo Sato, Hiroyuki Hirai
  • Patent number: 4652512
    Abstract: This invention provides a heat-sensitive recording material comprising a substrate and a heat-sensitive recording layer which is formed over the substrate and which contains a diazonium salt, a coupler and at least one of specific heat-fusible basic amidine and diamidine compounds in which the nitrogen atom(s) of ##STR1## moiety(moieties) has(have) a substituent and the nitrogen atom(s) or ##STR2## moiety(moieties) has(have) at least one substituent, the substituent being independently selected from the group consisting of phenyl, naphthyl, phenyl-C.sub.1 -C.sub.4 alkyl and naphthyl-C.sub.1 -C.sub.4 alkyl, each optionally substituted with C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy, phenyloxy, nitro or halogen, and in which amidine compounds are other than formamidines. The heat-sensitive recording material is especially excellent in storage stability.
    Type: Grant
    Filed: January 29, 1986
    Date of Patent: March 24, 1987
    Assignee: Kanzaki Paper Manufacturing Company, Limited
    Inventors: Katsuhiko Ishida, Masaharu Nojima, Tosaku Okamoto
  • Patent number: 4650740
    Abstract: A heat-sensitive recording material is described, comprising a support having provided thereon a recording layer comprising a binder containing a diazonium compound and a coupling component, said diazonium compound being a diazonium salt represented by formula (I)ArN.sub.2.sup.+ X.sup.- (I)wherein Ar represents a substituted or unsubstituted aromatic moiety; and X.sup.- represents an acid anion containing an alkyl group having three or more fluorine atoms.
    Type: Grant
    Filed: September 13, 1984
    Date of Patent: March 17, 1987
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Toshimasa Usami, Toshiharu Tanaka, Fumiaki Shinozaki
  • Patent number: 4642283
    Abstract: A negative working light-sensitive lithographic plate requiring no dampening solution and a plate making process are described, the negative working light-sensitive lithographic plate comprising a support having, in sequence, on said support, (A) a light-sensitive layer containing (1) an o-quinonediazide compound and (2) a coupling component which causes a diazo coupling reaction under a basic environment, and (B) a silicone rubber layer, and the plate making process comprising imagewise exposing the negative working light-sensitive lithographic plate and developing said exposed plate to obtain a lithographic plate requiring no dampening solution, wherein a step of processing with base is carried out after imagewise exposure.
    Type: Grant
    Filed: March 14, 1985
    Date of Patent: February 10, 1987
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Hiroshi Takahashi, Yasuhisa Narutomi, Yoshimasa Aotani, Keisuke Shiba
  • Patent number: 4590263
    Abstract: Novel diazonium salts which possess excellent photo speed, good thermal stability, exceptional resistance to discoloration in the D.sub.min areas, rapid development, and allow a wide range of azo dye colors are provided. The diazonium salts are of the following formula: ##STR1## wherein R.sub.1 is tertiary butyl or tertiary amyl; Y is hydrogen, alkyl, hydroxyalkyl, cyanoalkyl, cycloalkyl, aralkyl, alkoxy, aryloxy, aralkoxy, aralkylthio, arylthio, alkylthio, halogen, allyl, allyloxy, allylthio, cyanoalkoxy, hydroxyalkoxy, methoxyalkoxy, trifluoroalkyl, alkylacetylamino, morpholino, or dialkyl carbonamido;R.sub.2 and R.sub.3 are the same or different, and are alkyl, aralkyl, allyl, cyanoalkyl, hydroxyalkyl, hydrogen, acyl, cycloalkyl, beta-chloroalkyl, branched alkyl, or a structure wherein R.sub.2 and R.sub.3 may be linked together to form a heterocyclic structure; andX is an anion.
    Type: Grant
    Filed: September 30, 1982
    Date of Patent: May 20, 1986
    Assignee: James River Graphics, Inc.
    Inventors: Robert C. Desjarlais, Everett W. Bennett
  • Patent number: 4537851
    Abstract: A water-soluble, positive-working photoresist composition is disclosed which comprises water-soluble aromatic diazonium salt, water-soluble phenolic compound, and water-soluble polymeric compound. When the film of this composition is irradiated with a pattern of actinic ray and then brought into contact with an alkaline gas or solution, the coating of unexposed areas hardens to become water-insoluble. Preferably, when the film is brought into contact with a suspension of powder or dry powder after being hardened, a positive pattern of powder is obtained by the development with water.
    Type: Grant
    Filed: September 12, 1983
    Date of Patent: August 27, 1985
    Assignee: Hitachi, Ltd.
    Inventors: Saburo Nonogaki, Nobuaki Hayashi, Yoshifumi Tomita
  • Patent number: 4511642
    Abstract: Photo-fixing heat-sensitive recording media which comprise diazonium salts, couplers and/or basic materials, all of these components being insoluble or sparingly soluble in water. At least one of these components is present in the media in the form of a fine powder. The coupler may be a coupler which has a basic group therein and serves as both a coupler and a basic material.
    Type: Grant
    Filed: February 9, 1983
    Date of Patent: April 16, 1985
    Assignees: Nippon Telegraph and Telephone Public Corp., Tomoegawa Paper Manufacturing Co., Ltd.
    Inventors: Kensaku Higashi, Haruhiko Yano, Hirotsugu Sato, Ken Sukegawa, Yuji Ooba
  • Patent number: 4492749
    Abstract: This invention relates to a derivative of 2-hydroxy-naphthalene of the general formula ##STR1## wherein A is ##STR2## and X is --OH or ##STR3## and R.sub.1, R.sub.2, R.sub.3, and R.sub.4 are identical or different and are hydrogen, cycloalkyl having up to eight carbon atoms, which is optionally substituted by lower alkyl groups, aralkyl having up to 10 carbon atoms or aryl which is substituted by lower alkyl, lower alkoxy, halogenalkyl or alkyl-substituted amino groups or by halogen, or R.sub.1 and R.sub.2 or R.sub.3 and R.sub.4 in each case are, conjointly with the nitrogen atom to which they are attached, identical or different heterocyclic groups which are optionally substituted by lower alkyl.
    Type: Grant
    Filed: September 15, 1983
    Date of Patent: January 8, 1985
    Assignee: Hoechst Aktiengesellschaft
    Inventor: Siegfried Scheler
  • Patent number: 4486527
    Abstract: A thermo-developable type diazo copying material including a substrate and a heat sensitive recording layer, superposed on said substrate, which consists essentially of a diazo compound, a coupler and a heat-fusible color assistant, characterized in that said heat sensitive recording layer is of the multilayered type comprising a diazo compound-containing layer and a coupler-containing layer, and said coupler is composed of one or two or more of the compounds having the following general formula: ##STR1## wherein X is hydrogen, halogen, an alkyl group having 1-4 carbon atoms or an alkoxyl group having 1-4 carbon atoms; R.sup.1 is an alkyl group having 10-25 carbon atoms; and R.sup.2 is hydrogen or an alkyl group having 1-30 carbon atoms.
    Type: Grant
    Filed: February 14, 1983
    Date of Patent: December 4, 1984
    Assignee: Ricoh Company, Ltd.
    Inventors: Norio Kurisu, Tsutomu Matsuda, Masaru Shimada, Keishi Kubo
  • Patent number: 4446218
    Abstract: This invention relates to proof film-type light sensitive diazonium materials containing accelerators selected from sulfur and/or amide-containing compounds which are capable of accelerating the contact exposure of negative-working diazonium compounds when such diazonium compounds are subjected to UV radiation. These accelerators enhance essentially photosensitivity speed. The invention also relates to presensitized reproduction materials comprising diazonium materials containing these accelerators.
    Type: Grant
    Filed: March 18, 1982
    Date of Patent: May 1, 1984
    Assignee: American Hoechst Corporation
    Inventor: Major S. Dhillon
  • Patent number: 4439512
    Abstract: Phenylurethane compounds formed by the reaction between a phenolic coupler compound and an organic isocyanate compound are utilized to form phenolic coupler compounds in situ in order to react with chromogenic compounds present in the sensitive layer of recording or reproducing materials.The phenolic coupler compounds can also be stabilized by blocking the phenolic hydroxyl with carbonate, an alkyl ether, organosilylated ether or organophosphoric acid ester, some of which are novel compounds. These stabilized derivatives of the stabilized phenolic coupler compound will decompose by application to sufficient thermal energy or suitable liquid or gaseous fluid to form the phenolic coupler compound in situ. The phenolic coupler compound is formed in situ by applying thermal energy to the sensitive layer or by applying to the sensitive layer a liquid or gaseous fluid which is able to decompose the stabilized phenolic coupler compound and release the phenolic coupler compound.
    Type: Grant
    Filed: November 18, 1982
    Date of Patent: March 27, 1984
    Assignee: La Cellophane
    Inventor: Claude Ceintrey
  • Patent number: 4421839
    Abstract: A heat-sensitive recording sheet is proposed which has a heat-sensitive recording layer laminated on one surface of a support body and containing a diasosulfonate; a acid coupling agent comprising a compound having aromatic ring, hetroaromatic ring or substituted aromatic ring bonded thereto OH group and COOH group; and a thermoplastic resin having a glass transition point of 70.degree.-150.degree. C. or a photocuring resin.
    Type: Grant
    Filed: March 3, 1982
    Date of Patent: December 20, 1983
    Assignees: Dai Nippon Printing Co., Ltd., Tokyo Shibaura Denki Kabushiki Kaisha
    Inventors: Ryohei Takiguchi, Masayoshi Nagashima
  • Patent number: 4401744
    Abstract: Disclosure is made of a light-sensitive diazo coating composition and a light-sensitive diazotype reproduction material comprising a base with at least one coating layer comprising a light sensitive diazo compound, coupling component, a stabilizing acid and salt, and a development accelerating and stabilizing composition of 1,3-dimethylurea with urea or with thiourea, which also improves sensitizing solution compatibility and increases printing speed.
    Type: Grant
    Filed: May 6, 1981
    Date of Patent: August 30, 1983
    Assignee: Andrews Paper & Chemical Co., Inc.
    Inventor: Peter Muller
  • Patent number: 4400458
    Abstract: It is the purpose and object of the present invention to make better use of the emission range of light sources and to create the diazonium salts necessary for such purpose. The diazonium salts of the present invention of the general formula ##STR1## wherein Y is ##STR2## R.sub.1, R.sub.2 are equal or different and are, alkyl having 1 to 10 carbon atoms, aryl having 6 to 10 carbon atoms in a mono or polycylic ring;R.sub.3 is hydrogen, halogen, alkyl, alkoxy, cyano;R.sub.4 is hydrogen, halogen, alkyl, alkoxy; andX.sup.e is an anion,can be employed with all known couplers and additives in diazotype materials. They have an absorption range of 480 to 550 nm.
    Type: Grant
    Filed: September 14, 1981
    Date of Patent: August 23, 1983
    Assignee: VEB Filmfabrik Wolfen
    Inventors: Fred Walkow, Peter Czerney, Horst Hartmann, Jorg Marx
  • Patent number: 4334004
    Abstract: This invention relates to 2-hydroxy-3-naphthoic acid amides of the general formula: ##STR1## wherein R.sub.1 is hydrogen, a substituted or unsubstituted alkyl, cycloalkyl, aralkyl, or aryl group, and R.sub.2 and R.sub.3 are identical or different and are hydrogen, a substituted or unsubstituted alkyl, cycloalkyl, aralkyl, or aryl group, or, together with the nitrogen atom to which they are attached, a substituted or unsubstituted heterocyclic group.
    Type: Grant
    Filed: March 16, 1979
    Date of Patent: June 8, 1982
    Assignee: Hoechst Aktiengesellschaft
    Inventor: Siegfried Scheler
  • Patent number: 4307170
    Abstract: Negative-working diazography formulation is comprised of (i) at least one hexafluorophosphate diazonium salt adapted to photolytically cleave into an acid catalyst, (ii) at least one acid labile enolic, preferably arylenolic blocked-coupler adapted to be converted in the presence of acid to an active azo-coupling component, and (iii) an effective amount of an additive, such as p-toluenesulfonyl benzamide, capable of controlling the pH of films prepared from said formulation when subjected to a clearing step as defined herein.
    Type: Grant
    Filed: June 18, 1980
    Date of Patent: December 22, 1981
    Assignee: James River Graphics, Inc.
    Inventor: Robert C. Desjarlais
  • Patent number: 4304831
    Abstract: A two-component type diazo copying material according to this invention, which comprises a support and a photosensitive layer formed thereon, said layer consisting essentially of a diazo compound expressed by the following general formula I and a coupler mixture consisting of a compound expressed by the following formula II, a compound expressed by the following general formula III and a compound expressed by the following general formula IV, can form a genuine black-color image and is especially optimum for preparing a secondary original used in electrophotographic copying machines. General formula I ##STR1## (wherein R represents alkyl radical having 1 to 5 carbon atoms; R.sub.1 and R.sub.2 represent substituted or non-substituted alkyl radical, aralkyl radical or cycloalkyl radical, or R.sub.1 and R.sub.2 may form a heterocyclic ring together with the nitrogen atom to which they bond; and X represents anion.) ##STR2## (wherein X is of no account or represents O, S, SO or SO.sub.2.) ##STR3## [wherein R.sub.
    Type: Grant
    Filed: August 2, 1979
    Date of Patent: December 8, 1981
    Assignee: Ricoh Co., Ltd.
    Inventors: Tsutomu Matsuda, Masanori Rimoto
  • Patent number: 4289839
    Abstract: Negative-working diazography material is comprised of (i) at least one diazonium compound, (ii) at least one acid labile enolic, preferably phenolic blocked-coupler adapted to be converted in the presence of acid to an active azo-coupling component, (iii) at least one light-sensitive acid progenitor, and (iv) at least one carboxylic acid anhydride. The diazonium compound can itself concurrently function as the acid progenitor, e.g., when complexed with a Lewis acid. Upon imagewise exposure to light, acid catalyst is photochemically liberated, thus unblocking coupler molecules such that dye image forms under alkaline developing conditions only where the material has been irradiated. Under alkaline developing conditions, the anhydride reacts to render the unused diazo component remaining in the unexposed areas inactive.
    Type: Grant
    Filed: February 15, 1980
    Date of Patent: September 15, 1981
    Assignee: James River Graphics, Inc.
    Inventor: Carmine A. DiPippo
  • Patent number: 4273850
    Abstract: This invention relates to an improvement in a two-component diazotype material, composed of a support and of a light-sensitive layer applied to the support, the layer containing at least one benzene diazonium salt as the light-sensitive component and at least one coupler, the improvement comprising the combination of at least one 2,5-dialkoxy-4-mercaptobenzene diazonium salt and at least one compound of the general formula ##STR1## in which R.sub.1 and R.sub.2 are identical or different and denote hydrogen or alkyl, alkenyl, aralkyl, aryl or cycloalkyl groups, which can be further substituted.
    Type: Grant
    Filed: February 25, 1980
    Date of Patent: June 16, 1981
    Assignee: Hoechst Aktiengesellschaft
    Inventor: Hans-Dieter Frommeld
  • Patent number: 4268600
    Abstract: A photochemical color-printing process for textile articles wherein a photosensitive triazene and azo dye coupling agent are applied to surface of textile article, the coated textile is exposed to light with a negative image, unreacted chemical products are removed by washing and rinsing the coated textile article after imaging, and then the coated textile article is dried.
    Type: Grant
    Filed: December 1, 1978
    Date of Patent: May 19, 1981
    Assignee: Issec and Tissages de Soieries Rennis
    Inventors: Jean J. Robillard, Claude R. Riou