Patents by Inventor Ippei Nakamura
Ippei Nakamura 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: 7135271Abstract: The positive type photosensitive composition of the present invention comprises a polymer compound (A) having, in a side chain thereof, a polymerizable group or a cross-linkable group, and an infrared absorbent (B). Preferably, the polymerizable group or cross-linkable group is incorporated into molecules of the polymer compound (A) through a structural unit having this group in a side chain thereof. Specifically, the structural unit is preferably a structural unit having any one of structures represented by the following general formulae (1) to (4): wherein A, B, X each independently represents a single bond, an oxygen atom, a sulfur atom or the like; L and M each independently represent a bivalent organic group; R1 to R12 represents a hydrogen atom or a monovalent organic group; R13 to R24 each independently represents a monovalent organic group; and Y represents an oxygen atom, a sulfur atom, or a phenylene group which may have a substituent.Type: GrantFiled: August 30, 2004Date of Patent: November 14, 2006Assignee: Fuji Photo Film Co., Ltd.Inventors: Ikuo Kawauchi, Ippei Nakamura
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Publication number: 20060246372Abstract: The present invention relates to a positive planographic printing plate precursor comprising a support and a positive recording layer which is disposed on the support and contains (A) an alkali-soluble high-molecular weight compound having a heterocyclic ring bonded with a mercapto group. This positive planographic printing plate precursor is superior in chemical resistance and the developing characteristics of the exposed portions.Type: ApplicationFiled: March 17, 2005Publication date: November 2, 2006Inventors: Ippei Nakamura, Kazuto Kunita
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Publication number: 20060204887Abstract: The planographic printing plate precursor of the present invention comprises a support, an intermediate layer containing a polymer having an aromatic ring having two or more carboxylic acid groups on a side chain, which is provided on the support, and an infrared-ray layer photosensitive positive-type recording layer provided on the intermediate layer. According to the invention, a planographic printing plate precursor which can directly make plates by scanning light exposure based on a digital signal, is excellent in printing durability, and is excellent in removability of image parts not required with a removal solution.Type: ApplicationFiled: February 16, 2006Publication date: September 14, 2006Inventors: Masako Imai, Ippei Nakamura
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Patent number: 7087362Abstract: A process for producing a heat mode-compatible positive planographic printing plate precursor comprising a support and a photosensitive layer whose solubility in an aqueous alkali solution increases upon heat-mode exposure, which includes: applying a photosensitive layer coating solution onto the support, and drying the photosensitive layer coating solution at a drying temperature not less than 150° C. and not greater than 200° C. and for a drying time of 110 seconds or less.Type: GrantFiled: December 12, 2003Date of Patent: August 8, 2006Assignee: Fuji Photo Film Co., Ltd.Inventors: Kazuto Shimada, Kazuto Kunita, Ippei Nakamura, Ikuo Kawauchi
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Patent number: 7087358Abstract: A heat mode-applicable image-formation material having high sensitivity and excellent image-forming property, and a novel infrared absorber which can be suitably used in this material. The present invention relates to a substrate carrying thereon an image-formation layer which contains an infrared absorption agent. The agent has at least one surface orientation group in the molecule, and solubility of the image-formation layer in an alkaline aqueous solution is changed by action of radiation in the near-infrared range. Preferable as the infrared absorbing agent is an infrared absorber comprising, in a molecule thereof, a fluorine-containing substituent which have at least 5 fluorine atoms, or a polymethine chain of at least 5 carbon atoms and an alkyl group of at least 8 carbon atoms, said alkyl group being connected to the polymethine chain via any of nitrogen, oxygen and sulfur.Type: GrantFiled: March 3, 2004Date of Patent: August 8, 2006Assignee: Fuji Photo Film Co., Ltd.Inventor: Ippei Nakamura
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Patent number: 7049043Abstract: The invention provides a photosensitive composition including (A) a vinyl polymer containing a copolymerization component having a carboxyl group, having a content of the carboxyl group in a molecule of 2.0 meq/g or higher and having a solubility parameter less than 21.3 MPa1/2, (B) a polymer compound including a phenolic hydroxyl group, and (C) an IR absorber.Type: GrantFiled: May 28, 2003Date of Patent: May 23, 2006Assignee: Fuji Photo Film Co., Ltd.Inventors: Ippei Nakamura, Ikuo Kawauchi, Takeshi Serikawa, Mitsumasa Tsuchiya
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Publication number: 20060057493Abstract: The positive-type planographic printing plate precursor of the invention comprises a support and a recording layer provided on the support, wherein the recording layer contains: a polymer compound having (a) a monomer represented by the following formula (1), (b) a monomer having an aliphatic group having 7 or more carbon atoms and having a bridge bond, and (c) monomer having an acid group as a copolymerization component; and an infrared-ray absorbing agent. The positive-type planographic printing plate precursor of the invention achieves both excellent developability and excellent inking property, as well as better image-forming property and a clear image. wherein in the formula (1), Rf is a substituent containing a fluoroalkyl group or a perfluoroalkyl group having 9 or more fluorine atoms, n represents 1 or 2, and R1 represents hydrogen or a methyl group.Type: ApplicationFiled: August 16, 2005Publication date: March 16, 2006Inventors: Ryuki Kakino, Ippei Nakamura, Ikuo Kawauchi
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Patent number: 6958206Abstract: An image recording material comprising (a) an infrared ray absorber and (b) a polymer to lower a dynamic coefficient of friction to from 0.38 to 0.60, which can undergo image formation upon exposure with infrared laser; or a long-chain alkyl group-containing polymer having a reduction rate of coefficient of friction to a base polymer of from 0.5 to 0.97, the polymer being a copolymer of a long-chain alkyl group-containing monomer having 6 or more carbon atoms and a hydrophilic monomer.Type: GrantFiled: February 7, 2003Date of Patent: October 25, 2005Assignee: Fuji Photo Film Co., Ltd.Inventors: Tomotaka Tsuchimura, Ippei Nakamura, Tadahiro Sorori, Akihiro Endo, Tomoo Murakami
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Publication number: 20050142485Abstract: An infrared laser-sensitive positive type image recording material comprises a support; an alkali-developer-soluble first layer formed over the support; and a second layer formed over the first layer, the solubility of the second layer in alkali-developer being improved by exposure of the second layer to an infrared laser. The first layer comprises a polymer having a structural unit represented by formula (I): wherein R1 represents a hydrogen atom or a methyl group; R2 represents a hydrocarbon group having (n+1) valences and having an aliphatic ring structure having 3 to 30 carbon atoms; A represents an oxygen atom or —NR3— wherein R3 represents a hydrogen atom or a monovalent hydrocarbon group having 1 to 10 carbon atoms; and n is an integer of from 1 to 5.Type: ApplicationFiled: December 27, 2004Publication date: June 30, 2005Inventors: Ippei Nakamura, Kazuto Kunita, Yusuke Hatanaka
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Patent number: 6902863Abstract: An infrared-sensitive photosensitive composition comprising: (A) a resin; (B) a novolak resin; and (C) a light-to-heat converting substance, wherein the resin (A) has, as copolymer components, at least: (1) a (meth)acrylic acid or a monomer represented by formula (I) as defined herein; and (2) at least one compound selected from the group consisting of a (meth)acrylic ester, a (meth)acrylamide derivative, and a styrene derivative.Type: GrantFiled: March 19, 2003Date of Patent: June 7, 2005Assignee: Fuji Photo Film Co., Ltd.Inventors: Takeshi Serikawa, Ikuo Kawauchi, Mitsumasa Tsuchiya, Ippei Nakamura
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Publication number: 20050069812Abstract: The present invention provides a planographic printing plate precursor including a support, and a recording layer which is formed on the support and includes a water-insoluble and alkali-soluble resin having active hydrogen in a main chain thereof and an infrared absorbent, the solubility of the recording layer in an aqueous alkaline solution being increased by exposure to light; and a planographic printing plate precursor including a support, and a recording layer formed on the support, wherein the recording layer includes a lower layer which is formed on the support and includes a water-insoluble and alkali-soluble resin having active hydrogen in a main chain thereof, and an upper layer which is formed on the lower layer and includes a water-insoluble and alkali-soluble resin and a development inhibitor, the solubility of the upper layer in an aqueous alkaline solution being increased by exposure to light, and at least one of the lower layer and the upper layer of the recording layer includes an infrared abType: ApplicationFiled: September 28, 2004Publication date: March 31, 2005Inventors: Kazuo Maemoto, Ippei Nakamura
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Publication number: 20050064325Abstract: The planographic printing plate precursor of the invention includes a recording layer capable of forming an image upon irradiation with infrared rays, wherein the recording layer comprises (A) an alkali-soluble resin having, in a main chain, a structural unit containing at least one type of bond selected from an amide bond, urea bond, urethane bond and ester bond and having at least one type of acid group selected from a phenolic hydroxyl group, sulfonamide group and active imide group, and (B) an infrared absorbing agent. The invention provides a positive-working planographic printing plate precursor excellent in printing durability and chemical resistance.Type: ApplicationFiled: September 10, 2004Publication date: March 24, 2005Inventors: Ippei Nakamura, Kazuo Maemoto
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Publication number: 20050058934Abstract: The positive type photosensitive composition of the present invention comprises a polymer compound (A) having, in a side chain thereof, a polymerizable group or a cross-linkable group, and an infrared absorbent (B). Preferably, the polymerizable group or cross-linkable group is incorporated into molecules of the polymer compound (A) through a structural unit having this group in a side chain thereof. Specifically, the structural unit is preferably a structural unit having any one of structures represented by the following general formulae (1) to (4): wherein A, B, X each independently represents a single bond, an oxygen atom, a sulfur atom or the like; L and M each independently represent a bivalent organic group; R1 to R12 represents a hydrogen atom or a monovalent organic group; R13 to R24 each independently represents a monovalent organic group; and Y represents an oxygen atom, a sulfur atom, or a phenylene group which may have a substituent.Type: ApplicationFiled: August 30, 2004Publication date: March 17, 2005Inventors: Ikuo Kawauchi, Ippei Nakamura
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Publication number: 20050014093Abstract: The present invention relates to a positive-type planographic printing plate precursor comprising: a hydrophilic substrate; an image recording layer including a novolak resin (A) and a light-to-heat conversion agent (B), disposed on the substrate, the image recording layer increasing in solubility in an aqueous alkali solution when exposed to light emitted from an infrared laser, wherein the weight average molecular weight (Mw) of the novolak resin (A) is in a range of 500 to 10000 based on polystyrene, the molecular weight being found by a gel permeation chromatographic (GPC) method using monodispersion polystyrene as a standard, and the degree of dispersion (Mw/Mn) is 1.7 or less when the weight average molecular weight (Mw) is 500 to 3000, the degree of dispersion (Mw/Mn) is 2.Type: ApplicationFiled: July 15, 2004Publication date: January 20, 2005Inventors: Kotaro Watanabe, Ippei Nakamura, Ikuo Kawauchi, Yusuke Hatanaka
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Patent number: 6830865Abstract: A positive-type image-forming material and a planographic printing plate precursor having a recording layer composed of the material on a support. The material includes (a) a water-insoluble, aqueous alkaline solution-soluble polymer compound, (b) a light-heat converting agent, and (c) a phenol including a partial structure represented by the following formula (I). Solubility of the material in an aqueous alkaline solution is increased upon heating. In the formula (I), X represents a monovalent terminal group having 2 or more carbon atoms or a linking group of —CY1Y2— or —CHY1— in which Y1 and Y2 each represent a monovalent terminal group having 1 or more carbon atoms, W represents a monovalent terminal group, and n represents an integer from 1 to 4.Type: GrantFiled: February 20, 2002Date of Patent: December 14, 2004Assignee: Fuji Photo Film Co., Ltd.Inventors: Tomotaka Tsuchimura, Ippei Nakamura, Akio Oda
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Publication number: 20040229156Abstract: The present invention provides a photosensitive composition comprising an infrared absorbing agent represented by the following formula (I) and a polymer compound which is insoluble in water and soluble in an aqueous alkali solution and becoming soluble in an aqueous alkali solution by radiation of an infrared laser. In the formula described below, R1 and R2 independently represent an alkyl group having 1 to 18 carbon atoms or an alkyl group having 9 to 30 carbon atoms and Z represents a heptamethine group which may have a substituent. The definitions of other substituents are shown in the specification. According to the present invention, a photosensitive composition having high development latitude and storage stability, together with a positive type planographic printing plate for direct plate-making which can form an image with high sensitivity by using an infrared laser, are provided.Type: ApplicationFiled: November 12, 2003Publication date: November 18, 2004Applicant: FUJI PHOTO FILM CO,. LTD.Inventors: Ippei Nakamura, Hiromichi Kurita
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Publication number: 20040197701Abstract: Disclosed is a presensitized plate composed of a support having thereon an image recording layer which includes:Type: ApplicationFiled: March 26, 2004Publication date: October 7, 2004Inventors: Tomoyoshi Mitsumoto, Ippei Nakamura
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Patent number: 6797449Abstract: The invention provides a negative image-recording material for heat-mode exposure systems, which comprises (A) an IR absorbent including cyanine dye having a substituent that contains an atom having an atomic weight of at least 28 such as halogen atom, or a substituent that contains a non-covalent electron pair such as carbonyl group, (B) a radical generator and (C) a radically-polymerable compound, and which is imagewise exposed to IR rays for image formation thereon.Type: GrantFiled: January 15, 2002Date of Patent: September 28, 2004Assignee: Fuji Photo Film Co., Ltd.Inventors: Ippei Nakamura, Tadahiro Sorori
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Publication number: 20040175649Abstract: A heat mode-applicable image-formation material having high sensitivity and excellent image-forming property, and a novel infrared absorber which can be suitably used in this material. The present invention relates to a substrate carrying thereon an image-formation layer which contains an infrared absorption agent. The agent has at least one surface orientation group in the molecule, and solubility of the image-formation layer in an alkaline aqueous solution is changed by action of radiation in the near-infrared range. Preferable as the infrared absorbing agent is an infrared absorber comprising, in a molecule thereof, a fluorine-containing substituent which have at least 5 fluorine atoms, or a polymethine chain of at least 5 carbon atoms and an alkyl group of at least 8 carbon atoms, said alkyl group being connected to the polymethine chain via any of nitrogen, oxygen and sulfur.Type: ApplicationFiled: March 3, 2004Publication date: September 9, 2004Applicant: FUJI PHOTO FILM CO., LTD.Inventor: Ippei Nakamura
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Publication number: 20040157152Abstract: A lithographic printing plate precursor capable of forming an image upon irradiation with an infrared laser comprising a support, a first layer containing as the main component an alkali-soluble resin and a second layer containing as the main component an alkali-soluble resin that is different from the alkali-soluble resin contained as the main component in the first layer in this order, and at least one of the first layer and the second layer contains a mixture comprising at least two kinds of infrared absorbing agents.Type: ApplicationFiled: January 12, 2004Publication date: August 12, 2004Applicant: FUJI PHOTO FILM CO., LTD.Inventor: Ippei Nakamura