Patents by Inventor Shigefumi Kanchiku
Shigefumi Kanchiku 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: 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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Publication number: 20130055914Abstract: A relief printing plate precursor comprising, on a support, a relief-forming layer comprising (Component A) an ethylenically unsaturated compound; (Component B) a thermal polymerization initiator; and (Component C) an amine compound represented by any of formulae (I) to (III) below, wherein the relief-forming layer having a thickness of 0.1 mm to 10 mm.Type: ApplicationFiled: August 31, 2012Publication date: March 7, 2013Applicant: FUJIFILM CORPORATIONInventor: Shigefumi KANCHIKU
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Publication number: 20120211925Abstract: Disclosed are a method for producing a relief printing plate precursor, the method comprising a preparing step of preparing a composition comprising (Component A) a compound having two or more blocked isocyanate groups that are protected by a sequestering agent comprising a carboxylic acid ester bond and/or an amide bond; and (Component B) a compound having two or more hydroxyl groups, and thereafter a forming step of providing a relief-forming layer formed from the composition on a support, and a method for making a relief printing plate using the relief printing plate precursor, and a relief printing plate obtained by the method.Type: ApplicationFiled: February 22, 2012Publication date: August 23, 2012Applicant: FUJIFILM CorporationInventor: Shigefumi KANCHIKU
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Publication number: 20120192737Abstract: Disclosed are a resin composition for laser engraving including a resin having two groups having specific structures and having a number average molecular weight of 5,000 or more and 500,000 or less, a relief printing plate precursor for laser engraving comprising a relief-forming layer formed from the resin composition on a support, a process for making the relief printing plate precursor, a process of making a relief printing plate using the relief printing plate precursor, and a relief printing plate having a relief layer which is manufactured by the process.Type: ApplicationFiled: January 26, 2012Publication date: August 2, 2012Applicant: FUJIFILM CORPORATIONInventor: Shigefumi KANCHIKU
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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: 8124317Abstract: A planographic printing plate precursor having an intermediate layer containing a copolymer containing structural units represented by Formulae (1), (2) and (3) below, and a image forming layer, in this order on a support, wherein R1, R2 and R3 each represent a hydrogen atom, a substituent having from 1 to 30 carbon atoms, or a halogen atom, L1 represents a single bond or a (n+1)-valent connecting group, n represents an integer of from 0 to 10, L2 represents a single bond or a (m+1)-valent connecting group, X represents a carboxylate ion, M represents a counter cation necessary for neutralization of charge, m represents an integer of from 1 to 10, and Y represents a substituent having from 0 to 30 carbon atoms, provided that Y does not represent a carboxy group and does not represent the same constituent as (XM).Type: GrantFiled: September 19, 2008Date of Patent: February 28, 2012Assignee: Fujifilm CorporationInventors: Toyohisa Oya, Shigefumi Kanchiku, Keisuke Arimura
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Publication number: 20120024224Abstract: A resin composition for laser engraving, comprising (Component A) a compound having two or more ring structures selected from the group consisting of an epoxy ring, an oxetane ring and a five-membered carbonate ring, (Component B) a curing agent capable of reacting with Component A to thus form a crosslinked structure, and (Component C) a compound having at least one of a hydrolyzable silyl group and a silanol group.Type: ApplicationFiled: July 19, 2011Publication date: February 2, 2012Applicant: FUJIFILM CORPORATIONInventors: Shigefumi KANCHIKU, Atsushi SUGASAKI
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Patent number: 8012671Abstract: A curable composition in which polymerization inhibition due to oxygen is suppressed and which may be cured with high sensitivity by exposure to laser light or the like is provided. The curable composition includes: a polymerizable compound having an ethylenically unsaturated bond; a binder; a radical polymerization initiator; and at least one specific amine compound. Also provided is an image forming material and a negative-working planographic printing plate precursor including the curable composition.Type: GrantFiled: September 24, 2008Date of Patent: September 6, 2011Assignee: FUJIFILM CorporationInventor: Shigefumi Kanchiku
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Patent number: 7989140Abstract: A curable composition, including: a polymerizable compound (a) including an ethylenically unsaturated bond; a binder polymer (b); a radical polymerization initiator (c); and an alicyclic compound (d) including a urea bond is provided.Type: GrantFiled: September 17, 2008Date of Patent: August 2, 2011Assignee: FUJIFILM CorporationInventors: Shigefumi Kanchiku, Tomoya Sasaki
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Patent number: 7964334Abstract: The present invention provides a curable composition containing at least one species selected from polymerizable monomers represented by the following formulas (I) to (III) and a polymerization initiator, and a planographic printing plate precursor including the same. The curable composition can be cured with high sensitivity due to laser light exposure or the like, and the inhibition of polymerization due to oxygen is controlled. The composition has excellent solubility in a developer or a solvent.Type: GrantFiled: March 26, 2008Date of Patent: June 21, 2011Assignee: FUJIFILM CorporationInventors: Shigefumi Kanchiku, Koji Wariishi
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Patent number: 7955781Abstract: A negative-working photosensitive material is provided which includes: a support; an undercoat layer; and a photosensitive layer including a polymerization initiator, a polymerizable compound, and a binder polymer, wherein the support, the undercoat layer, and the photosensitive layer are sequentially layered, the undercoat layer includes a polymer including a structural unit (a) including at least one of a carboxylic acid or a carboxylic acid salt and a structural unit (b) including at least one carboxylic acid ester; and the content of the structural unit (a) in the polymer is from 30% to 90% by mole. Also, a negative-working planographic printing plate precursor including the negative-working photosensitive material is provided.Type: GrantFiled: September 24, 2008Date of Patent: June 7, 2011Assignee: FUJIFILM CorporationInventors: Shigefumi Kanchiku, Toyohisa Oya
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Publication number: 20090233221Abstract: The present invention provides a negative-working photosensitive material formed by sequentially layering an undercoat layer and a photosensitive layer on a support, wherein the undercoat layer contains a polymer containing (a) a structural unit containing at least one selected from a carboxylic acid or a carboxylic acid salt and (b) a structural unit containing at least one carboxylic acid ester; the photosensitive layer contains (A) an infrared absorbent, (B) an organoboron compound, (C) an onium salt compound and (D) a compound having a polymerizable unsaturated group; and a ratio of (a) with respect to (a) and (b) is 30 to 90% by mol. The invention also provides a negative-working planographic printing plate precursor that uses the negative-working photosensitive material.Type: ApplicationFiled: March 11, 2009Publication date: September 17, 2009Applicant: FUJIFILM CORPORATIONInventors: Shigefumi KANCHIKU, Toyohisa OYA, Keisuke ARIMURA
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Publication number: 20090087788Abstract: A curable composition in which polymerization inhibition due to oxygen is suppressed and which may be cured with high sensitivity by exposure to laser light or the like is provided. The curable composition includes: a polymerizable compound having an ethylenically unsaturated bond; a binder; a radical polymerization initiator; and at least one specific amine compound. Also provided is an image forming material and a negative-working planographic printing plate precursor including the curable composition.Type: ApplicationFiled: September 24, 2008Publication date: April 2, 2009Applicant: FUJIFILM CorporationInventor: Shigefumi Kanchiku
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Publication number: 20090087780Abstract: A negative-working photosensitive material is provided which includes: a support; an undercoat layer; and a photosensitive layer including a polymerization initiator, a polymerizable compound, and a binder polymer, wherein the support, the undercoat layer, and the photosensitive layer are sequentially layered, the undercoat layer includes a polymer including a structural unit (a) including at least one of a carboxylic acid or a carboxylic acid salt and a structural unit (b) including at least one carboxylic acid ester; and the content of the structural unit (a) in the polymer is from 30% to 90% by mole. Also, a negative-working planographic printing plate precursor including the negative-working photosensitive material is provided.Type: ApplicationFiled: September 24, 2008Publication date: April 2, 2009Applicant: FUJIFILM CorporationInventors: Shigefumi Kanchiku, Toyohisa Oya
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Publication number: 20090087787Abstract: A planographic printing plate precursor having an intermediate layer containing a copolymer containing structural units represented by Formulae (1), (2) and (3) below, and a image forming layer, in this order on a support, wherein R1, R2 and R3 each represent a hydrogen atom, a substituent having from 1 to 30 carbon atoms, or a halogen atom, L1 represents a single bond or a (n+1)-valent connecting group, n represents an integer of from 0 to 10, L2 represents a single bond or a (m+1)-valent connecting group, X represents a carboxylate ion, M represents a counter cation necessary for neutralization of charge, m represents an integer of from 1 to 10, and Y represents a substituent having from 0 to 30 carbon atoms, provided that Y does not represent a carboxy group and does not represent the same constituent as (XM).Type: ApplicationFiled: September 19, 2008Publication date: April 2, 2009Applicant: FUJIFILM CORPORATIONInventors: Toyohisa OYA, Shigefumi Kanchiku, Keisuke Arimura
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Publication number: 20090075206Abstract: A curable composition, including: a polymerizable compound (a) including an ethylenically unsaturated bond; a binder polymer (b); a radical polymerization initiator (c); and an alicyclic compound (d) including a urea bond is provided.Type: ApplicationFiled: September 17, 2008Publication date: March 19, 2009Applicant: FUJIFILM CORPORATIONInventors: Shigefumi KANCHIKU, Tomoya Sasaki
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Publication number: 20080241744Abstract: The present invention provides a curable composition containing at least one species selected from polymerizable monomers represented by the following formulas (I) to (III) and a polymerization initiator, and a planographic printing plate precursor including the same. The curable composition can be cured with high sensitivity due to laser light exposure or the like, and the inhibition of polymerization due to oxygen is controlled. The composition has excellent solubility in a developer or a solvent.Type: ApplicationFiled: March 26, 2008Publication date: October 2, 2008Applicant: FUJIFILM CORPORATIONInventors: Shigefumi Kanchiku, Koji Wariishi