Patents by Inventor Shigekatsu Fujii
Shigekatsu Fujii has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9223216Abstract: A lithographic printing plate precursor in a positive-type with an infrared-sensitivity, having a support and an image recording layer provided on the support, the support having a hydrophilic surface, the recording layer having a particular resin, an amphoteric surfactant and/or an anionic surfactant, and an infrared absorbing agent, wherein the particular resin being at least one of resins selected from the group consisting of a polyurethane resin, a poly(vinyl acetal) resin, and maleimide resin A.Type: GrantFiled: May 27, 2014Date of Patent: December 29, 2015Assignee: FUJIFILM CorporationInventors: Shigekatsu Fujii, Norio Aoshima, Yoshinori Taguchi, Yoichiro Ara, Takashi Aridomi
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Patent number: 9091926Abstract: A method of making a planographic printing plate includes exposing, to infrared light, a planographic printing plate precursor including a recording layer provided on a substrate, and developing the precursor using an aqueous alkaline solution. The recording layer comprises a copolymer containing a structural unit derived from (meth)acrylonitrile and at structural unit derived from styrene, a water-insoluble and alkali-soluble resin, and an infrared absorbing agent, the solubility of the recording layer in the aqueous alkaline solution being increased by the exposure. The aqueous alkaline solution has a pH of 8.5 to 10.8 and contains a betaine-based amphoteric surfactant and an ammonium salt represented by Formula (I): R1, R2, R3, and R4 each independently represent an alkyl or aryl group; the total number of carbon atoms in R1, R2, R3, and R4 is not more than 20; and X? represents a counter anion.Type: GrantFiled: February 1, 2013Date of Patent: July 28, 2015Assignee: FUJIFILM CorporationInventors: Shigekatsu Fujii, Yuichi Yasuhara, Yoshinori Taguchi, Norio Aoshima
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Patent number: 9040219Abstract: The invention provides an infrared-sensitive positive-working image forming material which provides excellent development latitude, image formability and image region strength, and in which decrease in development property is prevented even when a certain time has passed after pattern exposure until development treatment; an infrared-sensitive positive-working planographic printing plate precursor which is formed from the image forming material and has excellent image formability and image region printing durability; and a method for manufacturing a planographic printing plate using the planographic printing plate precursor. The image forming material includes; on a support, a lower layer containing a polymer having carboxylic acid groups at side chains thereof, at least a part of the carboxylic acid groups forming a salt structure with a monovalent basic compound, and an infrared absorbing agent; and an upper layer whose solubility to aqueous alkaline solution is increased by heat, in this order.Type: GrantFiled: July 28, 2011Date of Patent: May 26, 2015Assignee: FUJIFILM CorporationInventors: Yoshinori Taguchi, Noriaki Watanabe, Shigekatsu Fujii, Shigefumi Kanchiku
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Patent number: 8993216Abstract: A method for producing a planographic printing plate is provided, which includes: subjecting a planographic printing plate precursor to image-wise exposure, wherein the precursor includes plural recording layers at least one of which contains (A) an infrared absorbing agent on a support, the upper recording layer contains (B) a water-insoluble and alkali-soluble polymer compound having a repeating unit containing a fluoroalkyl group or a siloxane structure; and developing the precursor using an alkali developer containing (C)an ammonium salt compound of Formulae (C-1) to (C-3), wherein R1 represents a methyl group or an ethyl group, R2 and R3 represent a hydrocarbon group having 3 to 20 carbon atoms, R4 represents a hydrocarbon group, A represents an atomic group which forms a nitrogen-containing aliphatic ring with N+, B represents an atomic group which forms a nitrogen-containing aromatic ring with N+, and X?represents a counter anion.Type: GrantFiled: February 21, 2013Date of Patent: March 31, 2015Assignee: FUJIFILM CorporationInventors: Yoichiro Ara, Shigekatsu Fujii, Norio Aoshima
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Publication number: 20140272710Abstract: A lithographic printing plate precursor in a positive-type with an infrared-sensitivity, having a support and an image recording layer provided on the support, the support having a hydrophilic surface, the recording layer having a particular resin, an amphoteric surfactant and/or an anionic surfactant, and an infrared absorbing agent, wherein the particular resin being at least one of resins selected from the group consisting of a polyurethane resin, a poly(vinyl acetal) resin, and maleimide resin A.Type: ApplicationFiled: May 27, 2014Publication date: September 18, 2014Applicant: FUJIFILM CORPORATIONInventors: Shigekatsu FUJII, Norio AOSHIMA, Yoshinori TAGUCHI, Yoichiro ARA, Takashi ARIDOMI
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Patent number: 8771920Abstract: A lithographic printing plate precursor in a positive-type with an infrared-sensitivity, having a support and an image recording layer provided on the support, the support having a hydrophilic surface, the recording layer having a particular resin, an amphoteric surfactant and/or an anionic surfactant, and an infrared absorbing agent, wherein the particular resin being at least one of resins selected from the group consisting of a polyurethane resin, a poly (vinyl acetal) resin, and maleimide resin A.Type: GrantFiled: February 29, 2012Date of Patent: July 8, 2014Assignee: FUJIFILM CorporationInventors: Shigekatsu Fujii, Norio Aoshima, Yoshinori Taguchi, Yoichiro Ara, Takashi Aridomi
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Publication number: 20140182471Abstract: A method for producing a planographic printing plate, including the steps of: image-wise exposing a positive type planographic printing plate precursor including an intermediate layer and a positive type image-forming layer successively on a support, the intermediate layer having a coating amount after drying of from 2 mg/m2 to 200 mg/m2 and including a polymer including a repeating unit represented by the following formula (I-1) and a repeating unit represented by the following formula (I-2); and developing the exposed positive type planographic printing plate precursor using a treatment liquid having a pH of from 7 to 12:Type: ApplicationFiled: March 6, 2014Publication date: July 3, 2014Applicant: Fujifilm CorporationInventors: Shigekatsu FUJII, Yoshinori TAGUCHI, Norio AOSHIMA
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Publication number: 20130260317Abstract: A method for producing a planographic printing plate is provided, which includes: subjecting a planographic printing plate precursor to image-wise exposure, wherein the precursor includes plural recording layers at least one of which contains (A) an infrared absorbing agent on a support, the upper recording layer contains (B) a water-insoluble and alkali-soluble polymer compound having a repeating unit containing a fluoroalkyl group or a siloxane structure; and developing the precursor using an alkali developer containing (C) an ammonium salt compound represented by Formulae (C-1) to (C-3), wherein R1 represents a methyl group or the like, R2 and R3 represent a hydrocarbon group having 3 to 20 carbon atoms, R4 represents a hydrocarbon group, A represents an atomic group which forms a nitrogen-containing aliphatic ring with N+, B represents an atomic group which forms a nitrogen-containing aromatic ring with N+, and X? represents a counter anion.Type: ApplicationFiled: February 21, 2013Publication date: October 3, 2013Applicant: FUJIFILM CORPORATIONInventors: Yoichiro ARA, Shigekatsu FUJII, Norio AOSHIMA
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Publication number: 20130255516Abstract: A method of making a planographic printing plate, the method includes exposing, to infrared light, a planographic printing plate precursor including a recording layer provided on a substrate; and developing the precursor using an aqueous alkaline solution, in which the recording layer comprises a copolymer containing a structural unit derived from (meth)acrylonitrile and a structural unit derived from styrene, a water-insoluble and alkali-soluble resin, and an infrared absorbing agent, the solubility of the recording layer in the aqueous alkaline solution being increased by the exposure, and in which the aqueous alkaline solution has a pH of 8.5 to 10.8 and contains a betaine-based amphoteric surfactant and an ammonium salt represented by Formula (I): wherein, R1, R2, R3, and R4 each independently represent an alkyl or aryl group; the total number of carbon atoms in R1, R2, R3, and R4 is not more than 20; and X? represents a counter anion.Type: ApplicationFiled: February 1, 2013Publication date: October 3, 2013Applicant: FUJIFILM CORPORATIONInventors: Shigekatsu FUJII, Yuichi YASUHARA, Yoshinori TAGUCHI, Norio AOSHIMA
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Publication number: 20120295204Abstract: A processing method of a lithographic printing plate precursor includes: exposing imagewise a lithographic printing plate precursor comprising a support on a surface of which at least one of: a hydrophilizing treatment; and an undercoat layer has been provided and an image-recording layer, to cure an exposed area of the image-recording layer; and undergoing developing processing with an aqueous solution having pH of from 2 to 10, wherein the aqueous solution comprises an amphoteric surfactant and an anionic surfactant selected from an anionic surfactant having an aliphatic chain and a total number of carbon atoms included in the aliphatic chain of 6 or more and an anionic surfactant having an aromatic ring and a total number of carbon atoms of 12 or more, and a content of the anionic surfactant is from 0.1 to 3.3% by weight of the aqueous solution.Type: ApplicationFiled: August 1, 2012Publication date: November 22, 2012Applicant: FUJIFILM CorporationInventors: Keiichi ADACHI, Shigekatsu Fujii, Yoshinori Taguchi, Takashi Sato
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Publication number: 20120251954Abstract: A lithographic printing plate precursor in a positive-type with an infrared-sensitivity, having a support and an image recording layer provided on the support, the support having a hydrophilic surface, the recording layer having a particular resin, an amphoteric surfactant and/or an anionic surfactant, and an infrared absorbing agent, wherein the particular resin being at least one of resins selected from the group consisting of a polyurethane resin, a poly (vinyl acetal) resin, and maleimide resin A.Type: ApplicationFiled: February 29, 2012Publication date: October 4, 2012Applicant: FUJIFILM CorporationInventors: Shigekatsu FUJII, Norio Aoshima, Yoshinori Taguchi, Yoichiro Ara, Takashi Aridomi
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Patent number: 8257913Abstract: A processing method of a lithographic printing plate precursor includes: exposing imagewise a lithographic printing plate precursor comprising a support on a surface of which at least one of: a hydrophilizing treatment; and an undercoat layer has been provided and an image-recording layer, to cure an exposed area of the image-recording layer; and undergoing developing processing with an aqueous solution having pH of from 2 to 10, wherein the aqueous solution comprises an amphoteric surfactant and an anionic surfactant selected from an anionic surfactant having an aliphatic chain and a total number of carbon atoms included in the aliphatic chain of 6 or more and an anionic surfactant having an aromatic ring and a total number of carbon atoms of 12 or more, and a content of the anionic surfactant is from 0.1 to 3.3% by weight of the aqueous solution.Type: GrantFiled: September 26, 2008Date of Patent: September 4, 2012Assignee: FUJIFILM CorporationInventors: Keiichi Adachi, Shigekatsu Fujii, Yoshinori Taguchi, Takashi Sato
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Publication number: 20120052445Abstract: The invention provides an infrared-sensitive positive-working image forming material which provides excellent development latitude, image formability and image region strength, and in which decrease in development property is prevented even when a certain time has passed after pattern exposure until development treatment; an infrared-sensitive positive-working planographic printing plate precursor which is formed from the image forming material and has excellent image formability and image region printing durability; and a method for manufacturing a planographic printing plate using the planographic printing plate precursor. The image forming material includes; on a support, a lower layer containing a polymer having carboxylic acid groups at side chains thereof, at least a part of the carboxylic acid groups forming a salt structure with a monovalent basic compound, and an infrared absorbing agent; and an upper layer whose solubility to aqueous alkaline solution is increased by heat, in this order.Type: ApplicationFiled: July 28, 2011Publication date: March 1, 2012Applicant: FUJIFILM CORPORATIONInventors: Yoshinori TAGUCHI, Noriaki WATANABE, Shigekatsu FUJII, Shigefumi KANCHIKU
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Patent number: 7811742Abstract: A lithographic printing plate precursor includes: a support; and a photosensitive layer containing a binder polymer containing a positively charged nitrogen atom in at least one of a main chain and a side chain of the binder polymer, a compound containing an ethylenically unsubstituted bond; and a radical polymerization initiator.Type: GrantFiled: February 22, 2008Date of Patent: October 12, 2010Assignee: FUJIFILM CorporationInventors: Yoshinori Taguchi, Keiichi Adachi, Shigekatsu Fujii
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Publication number: 20100173248Abstract: A plate surface treatment agent for a lithographic printing plate is provided that includes a vinyl copolymer containing a monomer unit having at least one group selected from the group consisting of a phosphonic acid group, a phosphoric acid group, a carboxylic acid group, and a salt of these groups and a monomer unit having at least one group or structure selected from the group consisting of a sulfonic acid group, a salt thereof, an amide group, and a betaine structure. There is also provided a method for treating a lithographic printing plate that includes a step of imagewise exposing a lithographic printing plate precursor, a step of processing using a developer, and a step of carrying out a plate surface treatment using the plate surface treatment agent for a lithographic printing plate.Type: ApplicationFiled: January 5, 2010Publication date: July 8, 2010Applicant: FUJIFILM CORPORATIONInventors: Shigekatsu Fujii, Norio Aoshima, Toshihiro Watanabe, Yasuhiro Kubota
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Publication number: 20100075251Abstract: A method for preparing a lithographic printing plate includes: imagewise exposing a lithographic printing plate precursor including a photosensitive layer containing a sensitizing dye, a polymerization initiator, a polymerizable compound and a binder polymer and an aluminum support on which a divalent cation is adsorbed in an amount of from 0.5 to 3.0 mg/m2 prepared by treating the aluminum support with an aqueous polyvinylphosphonic acid solution and washing the treated aluminum support with an aqueous solution containing the divalent cation; and subjecting the exposed lithographic printing plate precursor to a monobath development processing with a developer.Type: ApplicationFiled: September 21, 2009Publication date: March 25, 2010Applicant: FUJIFILM CORPORATIONInventors: Shigekatsu Fujii, Mamoru Kuramoto, Keisuke Arimura
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Publication number: 20090148793Abstract: A processing method of a lithographic printing plate precursor includes: exposing imagewise a lithographic printing plate precursor comprising a support on a surface of which at least one of: a hydrophilizing treatment; and an undercoat layer has been provided and an image-recording layer, to cure an exposed area of the image-recording layer; and undergoing developing processing with an aqueous solution having pH of from 2 to 10, wherein the aqueous solution comprises an amphoteric surfactant and an anionic surfactant selected from an anionic surfactant having an aliphatic chain and a total number of carbon atoms included in the aliphatic chain of 6 or more and an anionic surfactant having an aromatic ring and a total number of carbon atoms of 12 or more, and a content of the anionic surfactant is from 0.1 to 3.3% by weight of the aqueous solution.Type: ApplicationFiled: September 26, 2008Publication date: June 11, 2009Applicant: FUJIFILM CORPORATIONInventors: Keiichi ADACHI, Shigekatsu FUJII, Yoshinori TAGUCHI, Takashi SATO
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Publication number: 20080268372Abstract: A lithographic printing plate precursor includes: a support; and a photosensitive layer containing a binder polymer containing a positively charged nitrogen atom in at least one of a main chain and a side chain of the binder polymer, a compound containing an ethylenically unsubstituted bond; and a radical polymerization initiator.Type: ApplicationFiled: February 22, 2008Publication date: October 30, 2008Applicant: FUJIFILM CORPORATIONInventors: Yoshinori TAGUCHI, Keiichi ADACHI, Shigekatsu FUJII
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Publication number: 20080261153Abstract: A plate-making method of a lithographic printing plate precursor includes: exposing imagewise a lithographic printing plate precursor including a support and an image-recording layer containing a binder polymer to cure an exposed area of the image-recording layer; and developing the exposed lithographic printing plate precursor with a development processing solution having pH of from 2.0 to 8.0, wherein the binder polymer has a structure including at least one of an amino group and an ammonium group, and the development processing solution contains at least one surfactant containing a nitrogen atom.Type: ApplicationFiled: March 31, 2008Publication date: October 23, 2008Applicant: FUJIFILM CORPORATIONInventors: Shigekatsu FUJII, Yoshinori TAGUSHI, Keiichi ADACHI, Shuhei YAMAGUCHI
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Publication number: 20050076557Abstract: An object of the present invention is to provide a readily manufacturing a fishhook having the barb whose angles and shapes can be freely changed correspondingly to purposes of use. A method of manufacturing a fishhook according to the present invention is characterized by: applying machining process for providing a sharpened part at a tip of wire to constitute a fishhook; and applying pressing process for making into a plate-like shape a part in continuation to the sharpened tip part; and further applying simultaneously or sequentially in free order machining process for forming a stepped part at one lateral side of the plate-like part and machining process for cutting out a swollen portion produced at the other lateral side of the plate-like part, whereby forming a point part or a fishhook.Type: ApplicationFiled: August 4, 2004Publication date: April 14, 2005Inventor: Shigekatsu Fujii