Aceto-aceto Or Heterocyclic Coupler Included Patents (Class 430/182)
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Patent number: 7300738Abstract: A recording material having, on a support, a recording layer containing an azolinyl acetic acid derivative and a diazo compound. The azolinyl acetic acid derivative is preferably is a compound represented by the following general formula (1): wherein X represents an oxygen atom or a sulfur atom; R11 represents an alkyl group, an aryl group, a heterocyclic group, —OR13 or —NR14R15; R12 represents a substituent; R13 represents an alkyl group, an aryl group or a heterocyclic group; R14 and R15 each independently represents a hydrogen atom, an alkyl group, an aryl group or a heterocyclic group; n represents an integer from 0 to 4; and, when n is an integer of 2 or greater, two or more R12s may be linked with each other to form a ring.Type: GrantFiled: February 9, 2004Date of Patent: November 27, 2007Assignee: Fujifilm CorporationInventors: Naoki Saito, Tetsunori Matsushita, Akinori Fujita, Yohsuke Takeuchi, Satoshi Higuchi, Kimi Ikeda
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Patent number: 6927007Abstract: A heat-sensitive recording material including a substrate having disposed thereon a heat-sensitive recording layer containing a diazo compound and a coupler compound capable of reacting with the diazo compound to develop color, wherein the coupler compound includes at least one of anilide derivatives represented by the following formula (1) or tautomers thereof: wherein R1 represents an alkyl group or an aryl group; R2, R3 and R4 each independently represent a hydrogen atom, a halogen atom, an alkyl group, an aryl group, an acyl group, an alkoxy group, an alkoxycarbonyl group, a hydroxycarbonyl group, an aminocarbonyl group, an acylamino group, a cyano group, a nitro group, an arylthio group or an alkylthio group; L represents a group which can leave upon coupling with the diazo compound; m represents 1 or 2; and n represents 1 or 2.Type: GrantFiled: October 27, 2003Date of Patent: August 9, 2005Assignee: Fuji Photo Film Co., Ltd.Inventors: Yohsuke Takeuchi, Akinori Fujita, Daisuke Arioka, Tetsunori Matsushita
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Patent number: 6864032Abstract: The present invention provides a method for forming an azo colorant by reaction of a diazo compound and a coupler. The coupler has a leaving group at the coupling position thereof, such that a coupling reaction rate is faster than it would be if the coupler did not have the leaving group. The coupling reaction rate constant k is preferably 0.1 (s?1) or more.Type: GrantFiled: April 18, 2001Date of Patent: March 8, 2005Assignee: Fuji Photo Film Co., Ltd.Inventors: Hisao Yamada, Mitsuyuki Tsurumi, Kazunori Nigorikawa
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Publication number: 20040048185Abstract: A heat-sensitive recording material containing a support and a heat-sensitive recording layer formed on the support, the heat-sensitive recording layer including a diazonium salt and a coupler that thermally reacts with the diazonium salt to develop color.Type: ApplicationFiled: August 29, 2003Publication date: March 11, 2004Applicant: FUJI PHOTO FILM CO., LTDInventors: Hisao Yamada, Hiroshi Sato, Yoshimitsu Arai, Kimi Ikeda
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Patent number: 6346359Abstract: Disclosed are a pyrrolopyrimidineone compound represented by the following general formula (1) and a heat-sensitive recording material using the pyrrolopyrimidineone compound as a coupler: General formula (1) wherein R1 and R2 each independently represents a hydrogen atom, a halogen atom, an aryl group, an alkyl group, a cyano group, an acyl group, a carbamoyl group, an alkoxycarbonyl group, an aryloxycarbonyl group, an alkylsulfonyl group, or an arylsulfonyl group; R3 represents an amino group, a substituted amino group, a hydroxyl group, an acyloxy group, an arylcarboxyl group, an alkoxy group, an aryloxy group, an alkylthio group, or an arylthio group; R4 represents a hydrogen atom, a halogen atom, or an electron attracting group whose Hammett substituent constant &sgr;p is 0.2 or more; and L represents a substituent group which can leave when the compound reacts with a diazonium salt.Type: GrantFiled: April 24, 2000Date of Patent: February 12, 2002Assignee: Fuji Photo Film Co., Ltd.Inventors: Hisao Yamada, Mitsuyuki Tsurumi, Kazunori Nigorikawa
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Patent number: 6329116Abstract: An object of the present invention is to provide a pyrrolo[1,2-a]pyrimidine compound that is useful as a coupler providing excellent hue of a cyan system and sufficient density of formed color. The pyrrolo[1,2-a]pyrimidine compound of the present invention for achieving the object is represented by one of following general formulae (1), (2) and (3).Type: GrantFiled: November 17, 1999Date of Patent: December 11, 2001Assignee: Fuji Photo Film Co., Ltd.Inventors: Hiroshi Sato, Tatsuo Kawabuchi, Mitsuyuki Tsurumi, Tetsunori Matsushita, Hisato Nagase, Kimiatsu Nomura, Yoshihiro Jimbo, Kazunori Nigorikawa
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Patent number: 6268104Abstract: A heat-sensitive recording material comprising a support and a heat-sensitive recording layer thereon, which contains a diazonium salt compound and a coupling component, is provided. The diazonium salt compound contains a benzenediazonium salt compound represented by formula (1) and the coupling component contains a uracil compound represented by formula (2) or a barbituric acid compound represented by formula (3).Type: GrantFiled: November 10, 1999Date of Patent: July 31, 2001Assignee: Fuji Photo Film Co., Ltd.Inventors: Masatoshi Yumoto, Kimi Ikeda, Hiroshi Yamamoto
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Patent number: 6060206Abstract: Disclosed is a photo- and heat-sensitive recording material comprising a substrate and a photo- and heat-sensitive recording layer formed thereon containing a diazo compound and a coupler, wherein the coupler is a compound represented by the general formula (1) or the general formula (2): ##STR1## where R.sup.1, R.sup.2 and R.sup.3 are each independently a hydrogen atom or a substituent group; and R.sup.1 and R.sup.2 may join with each other to form a ring. The reaction between the coupler represented by the general formula (2) and a specific diazo compound produces a magenta colorant having very sharp absorption characteristics. In short, the present invention provides a photo- and heat-sensitive recording material which does not inhibit the fixing and which exhibits excellent color formation, color reproduction, and image durability. Further, the present invention provides a magenta colorant which exhibits excellent absorption characteristics.Type: GrantFiled: October 1, 1998Date of Patent: May 9, 2000Assignee: Fuji Photo Film Co., Ltd.Inventors: Koichi Hanaki, Yasuhiro Mitamura, Atsuhiro Ohkawa
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Patent number: 6017672Abstract: A heat-sensitive recording material having formed on a support a heat-sensitive recording layer containing a diazonium salt and a coupling component, wherein the diazonium salt is a compound represented by the following formula (1): ##STR1## wherein R.sup.1 represents an alkyl group or an aryl group; R.sup.2, R.sup.3, R.sup.4 and R.sup.5 each independently represents a hydrogen atom or an alkyl group, at least one of R.sup.2, R.sup.3, R.sup.4, and R.sup.5 represents an alkyl group, and R.sup.2 and R.sup.3, or R.sup.4 and R.sup.5, or R.sup.1 and R.sup.3, or R.sup.1 and R.sup.4, may combine with each other to form a ring; and X.sup.- represents an anion.Type: GrantFiled: September 1, 1998Date of Patent: January 25, 2000Assignee: Fuji Photo Film Co., Ltd.Inventors: Yoshimitsu Arai, Masatoshi Yumoto, Kimiatsu Nomura
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Patent number: 5925489Abstract: Disclosed is a heat-sensitive recording material comprising a substrate having thereon a heat-sensitive recording layer containing a diazonium salt compound and a coupler, pyrrolo?1,2-a! pyrimidine compound, as the coupler, being represented by the following general formula (1): ##STR1## wherein R.sup.1 to R.sup.4 each represents a hydrogen atom, a halogen atom, an aryl group, an alkyl group, a cyano group, an acyl group, a substituted carbamoyl group, an alkoxycarbonyl group, an aryloxycarbonyl group, an acyloxy group, an alkoxy group, an aryloxy group, an alkylthio group, or an arylthio group.The diazo-type heat-sensitive recording material, which develops a violet to cyan color, has excellent image stability and image fixing characteristics.Type: GrantFiled: February 13, 1998Date of Patent: July 20, 1999Assignee: Fuji Photo Film Co., Ltd.Inventors: Tatsuo Kawabuchi, Hiroshi Sato, Kimiatsu Nomura, Masanobu Takashima
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Patent number: 5866293Abstract: A heat-sensitive recording material having excellent light-fastness and raw stock storability is disclosed. The material includes a support and a heat-sensitive recording layer provided on the support, and the heat-sensitive recording layer contains a diazo compound and a coupler. The coupler contains at least one species of pyrazolone compounds represented by the following formula (1): ##STR1## wherein Ar represents a phenyl group, a naphthyl group, or an aromatic heterocyclic group, any one of which may have a substituent bonded to the nucleus, said substituent may be a halogen atom, a cyano group, a trifluoromethyl group, an alkyl group, an aryl group, an alkoxycarbonyl group, a carbamoyl group, or a sulfamoyl group; R.sup.1 and R.sup.2 independently represent an alkyl group, an alkenyl group, or an aryl group, or R.sup.1 and R.sup.2 may be linked to each other so as to form a heterocycle.Type: GrantFiled: May 21, 1997Date of Patent: February 2, 1999Assignee: Fuji Photo Film Co., Ltd.Inventors: Kimiatsu Nomura, Hiroshi Sato, Naoto Yanagihara, Tetsunori Matsushita, Shojiro Sano
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Patent number: 5683850Abstract: A diazo heat-sensitive recording material having excellent raw stock storability and image storage characteristics, which comprises a support having thereon a recording layer comprising a diazo compound, a coupling component and an organic base. The diazo compound is a 4-disubstituted amino-2-alkoxybenzenediazonium salt and the coupling component is a compound represented by the following general formula: ##STR1## wherein R.sub.4, R.sub.5, R.sub.6 and R.sub.7 each represents a hydrogen atom, an alkyl group, an aryl group, an aralkyl group, an alkyloxy group, an aryloxy group, an alkylthio group, an arylthio group, an acyl group, an alkoxycarbonyl group, an acyloxy group, a carbamoyl group, a sulfamoyl group, a halogen atom, a cyano group or a nitro group.Type: GrantFiled: December 2, 1996Date of Patent: November 4, 1997Assignee: Fuji Photo Film Co., Ltd.Inventors: Tetunori Matushita, Hiroshi Sato, Sadao Ishige, Kimiatsu Nomura, Mitsuyuki Tsurumi
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Patent number: 5582952Abstract: 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: GrantFiled: March 7, 1995Date of Patent: December 10, 1996Assignee: Fuji Photo Film Co., Ltd.Inventors: Koichi Kawamura, Keiji Akiyama, Toshifumi Inno, Katsuji Kitatani
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Patent number: 5561019Abstract: Magnetic toner used for electrophotographic development includes additives such as inorganic fine particles, having a particular particle diameter and specific surface area, and hydrophobic silica having a particular specific surface area and surface treatment, so that the magnetic toner can provide images of high quality without generating photoconductor filming. The magnetic toner is applied to the electrophotographic method including the developing step of forming electrostatic latent images on a photoconductor containing a stationary magnet, magnetically attracting the magnetic toner to the surface of the photoconductor in a toner sump, and collecting toner at a non-image section by an electrode roller; the transferring step of transferring the toner to transfer paper; the cleaning step of removing residual magnetic toner left on the photoconductor in the transferring step; and the recycling step of recycling the residual magnetic toner.Type: GrantFiled: April 11, 1995Date of Patent: October 1, 1996Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Yasuhito Yuasa, Noriaki Hirota, Akinori Toyoda, Hideki Tatematsu
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Patent number: 5424164Abstract: 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: GrantFiled: November 10, 1994Date of Patent: June 13, 1995Assignee: Fuji Photo Film Co., LtdInventors: Masato Satomura, Ken Iwakura, Akira Igarashi
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Patent number: 5407777Abstract: A diazo-type recording material comprising a support having thereon a recording layer comprising a photosensitive diazo compound enclosed in microcapsules, a coupling component which reacts with said diazo compound by heating at a basic pH to develop a color, and a 1-phenyl-3-pyrazolidone compound represented by the formula: ##STR1## wherein the substituents X, and R.sub.1 -R.sub.4 are defined in the specification.Type: GrantFiled: November 17, 1992Date of Patent: April 18, 1995Assignee: Fuji Photo Film Co., Ltd.Inventors: Hirokazu Shimada, Akihiro Shimomura
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Patent number: 5338642Abstract: 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: GrantFiled: December 28, 1992Date of Patent: August 16, 1994Assignee: Fuji Photo Film Co., Ltd.Inventors: Toshiharu Tanaka, Sadao Ishige, Takekatsu Sugiyama, Hirokazu Shimada
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Patent number: 5296329Abstract: A diazo heat-sensitive recording material which comprises a support having thereon a heat-sensitive recording layer comprising a diazo compound, a coupling component, a basic substance, and a binder; wherein the coupling component is an acylacetanilide represented by the formula (I): ##STR1## wherein R.sub.1 is substituted or unsubstituted alkyl or aryl; R.sub.2 is substituted or unsubstituted alkyl or aralkyl; R.sub.3 is substituted of unsubstituted alkyl, alkoxy, aralkyloxy, alkylthio, or aralkylthio, substituted amino, or halogeno; the total number of carbon atoms in R.sub.2 and (R.sub.3).sub.n is 5 or more; n is zero or an integer of from 1 to 4; and the R.sub.3 's may be the same or different when n is 2 or more, which is useful for forming a yellow color image and providing a developed color image with higher light-fastness, less soiling of a non-image area, and improved uniformity in color-developing layer due to the use of a more oil-soluble coupling component.Type: GrantFiled: July 26, 1993Date of Patent: March 22, 1994Assignee: Fuji Photo Film Co., Ltd.Inventors: Takekatsu Sugiyama, Akira Igarashi
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Patent number: 5225309Abstract: 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: GrantFiled: March 19, 1992Date of Patent: July 6, 1993Assignees: Konica Corporation, Mitsubishi Kasei CorporationInventors: Norihito Suzuki, Kiyoshi Goto, Hiroshi Tomiyasu, Kazuo Noguchi, Akeo Kasakura
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Patent number: 4957847Abstract: 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: GrantFiled: December 2, 1988Date of Patent: September 18, 1990Assignee: Ciba-Geigy CorporationInventors: Jean-Marie Adam, Hans Baumann
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Patent number: 4929534Abstract: A positive-working photosensitive mixture containing an o-quinone diazide and a binder is disclosed wherein the mixture contains a compound which is able to form an azo coupling with the o-quinone diazide. A copying material produced with the photosensitive mixture has a high photosensitivity and an exceptional developer resistance. The photosensitive mixture is used in reproduction technique, and also in the field of resists.Type: GrantFiled: August 26, 1988Date of Patent: May 29, 1990Assignee: Hoechst AktiengesellschaftInventors: Trutz-Ulrich Stephani, Dieter Mohr, Britta Maisel, Werner Frass
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Patent number: 4895826Abstract: 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: GrantFiled: April 25, 1988Date of Patent: January 23, 1990Assignee: Fuji Photo Film Co., Ltd.Inventors: Katsuhiko Watanabe, Takayuki Hayashi, Hiroshi Kamikawa, Masato Satomura, Takekatsu Sugiyama
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Patent number: 4842979Abstract: A heat-sensitive recording material comprising a support having provided thereon a heat-sensitive layer containing microcapsules containing at least one diazonium salt capable of azo-coupling with 2-hydroxy-3-naphthoic acid anilide to develop a blue color, a 2-hydroxy-3-naphthoic acid amide derivative, a benzoylacetic amide derivative represented by the following formula and a basic substance: ##STR1## wherein X represents a hydrogen atom, a halogen atom, a lower alkyl group or an alkoxy, aralkyloxy, phenoxy or acylamino group having up to 18 carbon atoms; Y represents an alkyl or aralkyl group having from 7 to 18 carbon atoms, an alkoxy, aralkyloxy, phenoxy, naphthyloxy, alkylthio, aralkylthio or phenylthio group having from 6 to 18 carbon atoms, a naphthylthio group, a sulfonyloxy group, a sulfamoyl gorup, a ureido group, a thioureido group or an acylamino group; X' and Y' each represents a hydrogen atom, a halogen atom, a lower alkyl group or a lower alkoxy group; and Y and Y' may combine to form a substitType: GrantFiled: November 30, 1987Date of Patent: June 27, 1989Assignee: Fuji Photo Film Co., Ltd.Inventors: Sadao Ishige, Toshimasa Usami, Hiroshi Kamikawa, Toshiharu Tanaka
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Patent number: 4770973Abstract: In a heat-sensitive recording material which comprises a substrate and a heat-sensitive recording layer thereon containing a diazonium salt and coupler compound, the heat-sensitive recording material characterized in that the coupler compound comprises at least one compound represented by the formula [I] below ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.6, R.sub.7 and R.sub.8 are each hydrogen atom, halogen atom, alkyl or alkoxyl; R.sub.9 is hydrogen atom or alkyl; X and Y are each hydrogen atom, --OR.sub.10 or --N(R.sub.11)(R.sub.12), R.sub.10, R.sub.11 and R.sub.12 being each hydrogen atom, alkyl, alicyclic group, aryl or aralkyl, these R.sub.10, R.sub.11 and R.sub.12 may have a substituent selected from among halogen atom, alkyl and alkoxy, R.sub.11 and R.sub.12 may link together to form a heteroring, or, one or both of R.sub.11 and R.sub.12 may form a heteroring together with an adjacent benzene ring; n is 0 or 1.Type: GrantFiled: November 7, 1986Date of Patent: September 13, 1988Assignee: Kanzaki Paper Manufacturing LimitedInventors: Nobuo Kanda, Katsuhiko Ishida, Tosaku Okamoto, Mitsuru Kondo
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Patent number: 4743524Abstract: 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: GrantFiled: October 17, 1986Date of Patent: May 10, 1988Assignee: Andrews Paper & Chemical Co., Inc.Inventors: Peter Muller, Henry Mustacchi, Leonard Kreicas
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Patent number: 4659644Abstract: A diazo-type thermosensitive recording material is disclosed, which comprises a support material and a thermosensitive coloring layer formed on the support material, which thermosensitive coloring layer comprises a diazonium compound, a coupler and a thermo-fusible or thermo-softening material, the coupler being a combination of a hydrazone-type coupler of the formula of R.sup.1 --NH--N.dbd.CH--R.sup.2 (wherein R.sup.1 and R.sup.2 are defined in detail in the specification) and a two-valence metal compound capable of chelating with the coupled product produced by the coupling of the diazonium compound and the hydrazone-type coupler.Type: GrantFiled: December 19, 1984Date of Patent: April 21, 1987Assignee: Ricoh Company, Ltd.Inventors: Takayuki Hoshina, Michihisa Takahashi, Masanori Rimoto, Masanaka Nagamoto
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Patent number: 4652512Abstract: 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: GrantFiled: January 29, 1986Date of Patent: March 24, 1987Assignee: Kanzaki Paper Manufacturing Company, LimitedInventors: Katsuhiko Ishida, Masaharu Nojima, Tosaku Okamoto
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Patent number: 4650740Abstract: 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: GrantFiled: September 13, 1984Date of Patent: March 17, 1987Assignee: Fuji Photo Film Co., Ltd.Inventors: Toshimasa Usami, Toshiharu Tanaka, Fumiaki Shinozaki
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Patent number: 4642283Abstract: 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: GrantFiled: March 14, 1985Date of Patent: February 10, 1987Assignee: Fuji Photo Film Co., Ltd.Inventors: Hiroshi Takahashi, Yasuhisa Narutomi, Yoshimasa Aotani, Keisuke Shiba
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Patent number: 4590263Abstract: 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: GrantFiled: September 30, 1982Date of Patent: May 20, 1986Assignee: James River Graphics, Inc.Inventors: Robert C. Desjarlais, Everett W. Bennett
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Patent number: 4446218Abstract: 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: GrantFiled: March 18, 1982Date of Patent: May 1, 1984Assignee: American Hoechst CorporationInventor: Major S. Dhillon
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Patent number: 4401744Abstract: 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: GrantFiled: May 6, 1981Date of Patent: August 30, 1983Assignee: Andrews Paper & Chemical Co., Inc.Inventor: Peter Muller
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Patent number: 4400458Abstract: 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: GrantFiled: September 14, 1981Date of Patent: August 23, 1983Assignee: VEB Filmfabrik WolfenInventors: Fred Walkow, Peter Czerney, Horst Hartmann, Jorg Marx
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Patent number: 4304831Abstract: 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: GrantFiled: August 2, 1979Date of Patent: December 8, 1981Assignee: Ricoh Co., Ltd.Inventors: Tsutomu Matsuda, Masanori Rimoto
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Patent number: 4225662Abstract: This invention provides yellow-developing couplers for use in diazo copying materials, which couplers are superior in light fastness and are expressed by the general formula: ##STR1## wherein X and Y represent hydrogen atom, halogen, or alkyl radical or alkoxy radical having 1 to 6 carbon atoms.Type: GrantFiled: April 11, 1979Date of Patent: September 30, 1980Assignee: Ricoh Company, Ltd.Inventors: Tsutomu Matsuda, Masanori Rimoto, Chihiro Hayashi