Patents by Inventor Akihiro Iihara
Akihiro Iihara 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: 11466165Abstract: The present invention relates to a printing plate including a first silicone layer and a second silicone layer which have different ink acceptabilities on a support. An object of the present invention is to provide a printing plate that dispenses with a development step and that has excellent image reproducibility, ink repellency, ink acceptability, and printing durability.Type: GrantFiled: April 17, 2019Date of Patent: October 11, 2022Assignee: TORAY INDUSTRIES, INC.Inventors: Akihiro Iihara, Takejiro Inoue
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Publication number: 20210047527Abstract: The present invention relates to a printing plate including a first silicone layer and a second silicone layer which have different ink acceptabilities on a support. An object of the present invention is to provide a printing plate that dispenses with a development step and that has excellent image reproducibility, ink repellency, ink acceptability, and printing durability.Type: ApplicationFiled: April 17, 2019Publication date: February 18, 2021Applicant: TORAY Industries, Inc.Inventors: Akihiro IIHARA, Takejiro INOUE
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Patent number: 10538075Abstract: The present invention provides a silicone composition for use in a printing plate, the composition including at least: a SiH group-containing compound; a compound represented by the following general formula (I); a compound represented by the following general formula (II); and/or a compound represented by the following general formula (III); wherein Ds in the compound represented by the general formula (I), Gs in the compound represented by the general formula (II) and Js in the compound represented by the general formula (III) each represents an acetoxy group or a dialkyloximino group: A-Si-(D)3 (I) (wherein in the general formula (I), A represents a non-hydrolyzable functional group capable of undergoing a hydrosilylation reaction with a SiH group); E-Si-(G)3 (II) (wherein in the general formula (II), E represents a non-hydrolyzable functional group incapable of undergoing a hydrosilylation reaction with a SiH group); and Si-(J)4 (III).Type: GrantFiled: March 15, 2016Date of Patent: January 21, 2020Assignee: TORAY INDUSTRIES, INC.Inventors: Akihiro Iihara, Yasunori Kuse, Seiichiro Murase
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Publication number: 20190099995Abstract: The present invention provides a silicone composition for use in a printing plate, the composition including at least: a SiH group-containing compound; a compound represented by the following general formula (I); a compound represented by the following general formula (II); and/or a compound represented by the following general formula (III); wherein Ds in the compound represented by the general formula (I), Gs in the compound represented by the general formula (II) and Js in the compound represented by the general formula (III) each represents an acetoxy group or a dialkyloximino group: A-Si-(D)3 (I) (wherein in the general formula (I), A represents a non-hydrolyzable functional group capable of undergoing a hydrosilylation reaction with a SiH group); E-Si-(G)3 (II) (wherein in the general formula (II), E represents a non-hydrolyzable functional group incapable of undergoing a hydrosilylation reaction with a SiH group); and Si-(J)4 (III).Type: ApplicationFiled: March 15, 2016Publication date: April 4, 2019Applicant: TORAY INDUSTRIES, INC.Inventors: Akihiro IIHARA, Yasunori KUSE, Seiichiro MURASE
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Publication number: 20180043678Abstract: The present invention provides a planographic printing plate original including, in the order mentioned below: a substrate; and at least a heat sensitive layer and a silicone rubber layer provided on the substrate, wherein the heat sensitive layer contains a polyurethane having a carbonate structure. The present invention also provides a method of producing a planographic printing plate using the same, and a method of producing a printed matter. An object of the present invention is to provide: a planographic printing plate original which has an excellent halftone dot reproducibility and printing durability, and in which the occurrence of scumming can be prevented; a method of producing a planographic printing plate using the same; and a method of producing a printed matter.Type: ApplicationFiled: March 1, 2016Publication date: February 15, 2018Applicant: TORAY INDUSTRIES, INC.Inventors: Yuki KASE, Akihiro IIHARA, Seiichiro MURASE
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Publication number: 20170320312Abstract: An object of the invention is to provide a water-based lithographic printing method that is excellent in printing quality and environmental aspects. The invention concerns a method of producing a printed material, including the steps of: allowing a water-based ink to adhere to a surface of a heat sensitive layer of a lithographic printing plate having a surface on which an ink repelling layer and the heat sensitive layer exist; and transferring the adhering water-based ink directly or via a blanket to a printing substrate.Type: ApplicationFiled: November 18, 2015Publication date: November 9, 2017Applicant: TORAY INDUSTRIES, INC.Inventors: Takejiro INOUE, Seiichiro MURASE, Yuichi TSUJI, Akihiro IIHARA
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Publication number: 20170232775Abstract: An object of the present invention is to provide a waterless lithographic printing plate precursor that sufficiently repels ink, which tends to adhere to non-imaging areas, and maintains its repelling effects, and a printing method using a waterless lithographic printing plate obtained from the waterless lithographic printing plate precursor. The following are provided: a lithographic printing plate precursor having at least a heat sensitive layer and an ink repellent layer, wherein the ink repellent layer contains an ink repelling, the ink repellent liquid having a boiling point of not less than 150° C.Type: ApplicationFiled: November 10, 2015Publication date: August 17, 2017Applicant: TORAY INDUSTRIES, INC.Inventors: Yasunori KUSE, Akihiro IIHARA, Seiichiro MURASE
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Patent number: 9199444Abstract: A waterless planographic printing plate precursor has, on a substrate, at least a photosensitive layer or heat sensitive layer and a silicone rubber layer, which is a waterless planographic printing plate precursor, wherein 1) a color pigment and a pigment dispersant are contained in the silicone rubber layer, 2) the a content of color pigment is 0.1 to 20 vol % in the silicone rubber layer, and 3) the pigment dispersant contains an organic complex compound including a metal and an organic compound.Type: GrantFiled: October 21, 2013Date of Patent: December 1, 2015Assignee: Toray Industries, Inc.Inventors: Akihiro Iihara, Mitsuru Suezawa, Masuichi Eguchi
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Patent number: 9164378Abstract: The objective is to provide a direct drawing-type waterless lithographic printing original plate which is highly sensitive and is not susceptible to formation of blisters, namely a direct drawing-type waterless lithographic printing original plate which has a wide latitude. Provided is a direct drawing-type waterless lithographic printing original plate which has at least a heat-sensitive layer and a silicone rubber layer on a substrate in this order. The direct drawing-type waterless lithographic printing original plate is characterized in that the heat-sensitive layer contains non-photosensitive particles and the average particle diameter of the non-photosensitive particles is not less than ½ of the average film thickness of a portion of the heat-sensitive layer where the non-photosensitive particles are not present.Type: GrantFiled: September 16, 2011Date of Patent: October 20, 2015Assignee: TORAY INDUSTRIES, INC.Inventors: Akihiro Iihara, Yasunori Kuse, Yuta Shuto, Satoshi Yoshida, Kazuki Goto
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Publication number: 20140045120Abstract: A waterless planographic printing plate precursor has, on a substrate, at least a photosensitive layer or heat sensitive layer and a silicone rubber layer, which is a waterless planographic printing plate precursor, wherein 1) a color pigment and a pigment dispersant are contained in the silicone rubber layer, 2) the a content of color pigment is 0.1 to 20 vol % in the silicone rubber layer, and 3) the pigment dispersant contains an organic complex compound including a metal and an organic compound.Type: ApplicationFiled: October 21, 2013Publication date: February 13, 2014Applicant: Toray Industries, Inc.Inventors: Akihiro Iihara, Mitsuru Suezawa, Masuichi Eguchi
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Patent number: 8617793Abstract: A waterless planographic printing plate precursor is capable of plate inspection without a post-dyeing step, capable of being handled in a light room and excellent in coloring matter fixing in silicone rubber layer. The waterless planographic printing plate precursor has at least a photosensitive layer or heat sensitive layer and a silicone rubber layer on a substrate, which is a waterless planographic printing plate precursor characterized in that a color pigment is contained in the above-mentioned silicone rubber layer, and it is possible to obtain a more excellent effect by further incorporating, in the above-mentioned silicone rubber layer, a pigment dispersant containing an organic complex compound comprising of a metal and an organic compound. Furthermore, when aluminum and/or titanium is contained as the above-mentioned metal, a more excellent effect can be obtained.Type: GrantFiled: November 1, 2007Date of Patent: December 31, 2013Assignee: Toray Industries, Inc.Inventors: Akihiro Iihara, Mitsuru Suezawa, Masuichi Eguchi
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Publication number: 20130298794Abstract: A directly imageable waterless lithographic printing plate precursor includes at least a heat sensitive layer and a silicone rubber layer formed on a substrate in this order, wherein the heat sensitive layer contains at least a novolac resin, a polyurethane and a light-to-heat conversion material, and also has a phase separation structure including at least a phase containing a novolac resin and a phase containing a polyurethane. The directly imageable waterless lithographic printing plate precursor has high sensitivity and is less likely to cause blister, that is, having wide latitude.Type: ApplicationFiled: January 13, 2012Publication date: November 14, 2013Applicant: Toray Industries, Inc.Inventors: Yuta Shuto, Akihiro Iihara, Kazuki Goto, Satoshi Yoshida
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Publication number: 20130273473Abstract: The objective is to provide a direct drawing-type waterless lithographic printing original plate which is highly sensitive and is not susceptible to formation of blisters, namely a direct drawing-type waterless lithographic printing original plate which has a wide latitude. Provided is a direct drawing-type waterless lithographic printing original plate which has at least a heat-sensitive layer and a silicone rubber layer on a substrate in this order. The direct drawing-type waterless lithographic printing original plate is characterized in that the heat-sensitive layer contains non-photosensitive particles and the average particle diameter of the non-photosensitive particles is not less than ½ of the average film thickness of a portion of the heat-sensitive layer where the non-photosensitive particles are not present.Type: ApplicationFiled: September 16, 2011Publication date: October 17, 2013Applicant: TORAY INDUSTRIES, INC.Inventors: Akihiro Iihara, Yasunori Kuse, Yuta Shuto, Satoshi Yoshida, Kazuki Goto
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Patent number: 8298749Abstract: Provided is a directly imageable waterless planographic printing plate precursor that comprises at least a heat sensitive layer and a silicone rubber layer formed on a substrate in this order and has a high sensitivity not only immediately after the precursor production but also after the passage of time. In the directly imageable waterless planographic printing plate precursor, the heat sensitive layer contains liquid bubbles filled with a liquid with a boiling point in the range of 210 to 270° C. Also provided is a production method for making a directly imageable waterless planographic printing plate precursor.Type: GrantFiled: March 31, 2010Date of Patent: October 30, 2012Assignee: Toray Industries, Inc.Inventors: Akihiro Iihara, Yuta Shuto, Yutaka Ishida
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Publication number: 20110300486Abstract: A directly imageable waterless planographic printing plate precursor includes at least a heat sensitive layer and a silicone rubber layer formed on a substrate in this order and has a high sensitivity not only immediately after the precursor production but also after the passage of time. In the directly imageable waterless planographic printing plate precursor, the heat sensitive layer contains liquid bubbles filled with a liquid with a boiling point in the range of 210 to 270° C. A production method comprises applying a solution of a heat sensitive layer composition containing a solvent with a solubility parameter of 17.0 (MPa)1/2 or less and a boiling point in the range of 210 to 270° C. and a solvent with a solubility parameter of more than 17.Type: ApplicationFiled: March 31, 2010Publication date: December 8, 2011Applicant: TORAY INDUSTRIES, INC.Inventors: Akihiro Iihara, Yuta Shuto, Yutaka Ishida
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Publication number: 20100075250Abstract: A waterless planographic printing plate precursor is capable of plate inspection without a post-dyeing step, capable of being handled in a light room and excellent in coloring matter fixing in silicone rubber layer. The waterless planographic printing plate precursor has at least a photosensitive layer or heat sensitive layer and a silicone rubber layer on a substrate, which is a waterless planographic printing plate precursor characterized in that a color pigment is contained in the above-mentioned silicone rubber layer, and it is possible to obtain a more excellent effect by further incorporating, in the above-mentioned silicone rubber layer, a pigment dispersant containing an organic complex compound comprising of a metal and an organic compound. Furthermore, when aluminum and/or titanium is contained as the above-mentioned metal, a more excellent effect can be obtained.Type: ApplicationFiled: November 1, 2007Publication date: March 25, 2010Applicant: Toray Industries, Inc.Inventors: Akihiro Iihara, Mitsuru Suezawa, Masuichi Eguchi
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Publication number: 20030175619Abstract: The invention is a directly imageable waterless planographic printing plate precursor comprising: at least a heat insulating layer, a heat sensitive layer, and an ink repellent layer that are provided in that order on a substrate, wherein a transmittance of the heat insulating layer for a light having a wavelength within a range of 400 to 650 nm is at most 15% over the entire range of the wavelength. The invention provides a directly imageable waterless planographic printing plate precursor that allows measurement of the dot area ratio on the printing plate with a densitometer or the like.Type: ApplicationFiled: February 26, 2003Publication date: September 18, 2003Applicant: TORAY Industries, Inc.Inventors: Akihiro Iihara, Ken Kawamura, Mitsuru Suezawa, Kimikazu Nagase
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Patent number: 6074797Abstract: The present invention relates to a precursor of waterless planographic printing plates, in which at least a photosensitive layer and a silicone rubber layer are laminated on a substrate in this order, characterized in that said photosensitive layer contains a quinonediazide group-containing polyurethane resin and furthermore, preferably, contains a light-heat converting material.The present invention can provide a precursor of waterless planographic printing plates, which is improved in both image reproducibility and printing durability, and which can be applied to both the method of obtaining a waterless planographic printing plate by ordinary image exposure and the method of obtaining a waterless planographic printing plate by laser irradiation.Type: GrantFiled: February 23, 1999Date of Patent: June 13, 2000Assignee: Toray Industries, Inc.Inventors: Mitsuru Suezawa, Akihiro Iihara, Norimasa Ikeda