Patents by Inventor Yasuo Yoshihiro
Yasuo Yoshihiro 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: 8530400Abstract: Provided is a maintenance liquid for inkjet printers, which comprises at least one of glycol ethers and glycol esters represented by the following general formulas (1) to (3), and 45 to 10 mg/L of dissolved oxygen: R1CO(OR2)xOR3??General formula (1) R4CO(OR5)YOCOR6??General formula (2) R7(OR8)ZOR9??General formula (3) wherein R2, R5, and R8 each independently represent an ethylene group or a propylene group, R1, R3, R4, and R6 each independently represent an alkyl group having 1 to 4 carbon atoms, R7 and R9 each independently represent a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, and X, Y, and Z each independently represent an integer of 1 to 4.Type: GrantFiled: April 25, 2008Date of Patent: September 10, 2013Assignee: Toyo Ink Mfg. Co., Ltd.Inventors: Eriko Seki, Seiji Aida, Yasuo Yoshihiro, Kaori Nakano, Ken Yamasaki
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Patent number: 8378005Abstract: Provided is an active energy ray-curable inkjet ink comprising a pigment and polymerizable monomers that is superior in nozzle ejection stability, adhesiveness to recording medium and storage stability, wherein the polymerizable monomers comprise N-acryloyloxyethyl hexahydrophthalimide.Type: GrantFiled: February 16, 2007Date of Patent: February 19, 2013Assignee: Toyo Ink Mfg. Co., Ltd.Inventors: Yasuo Yoshihiro, Yukitoshi Takahashi
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Patent number: 8142866Abstract: A display panel has a resin substrate and a printed layer formed on at least a part of the resin substrate through inkjet printing. The printed layer is formed from cured products of UV-curable inks each containing UV-curable monomers which are polymerized and cured by UV irradiation, and the printed layer has at least two such cured products having different pencil hardness values.Type: GrantFiled: August 28, 2008Date of Patent: March 27, 2012Assignees: Denso Corporation, Toyo Ink Mfg., Ltd.Inventors: Teruhiko Iwase, Takashi Aoki, Osamu Ina, Yasuo Yoshihiro, Yukitoshi Takahashi, Shinichi Sato
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Patent number: 8105679Abstract: The present invention relates to an active energy beam-curable ink comprising polymerizable monomers, wherein relative to the total of all the polymerizable monomers, the polymerizable monomers comprise from 95 to 99.99% by weight of a monofunctional monomer and from 0.01 to 5% by weight of a polyfunctional monomer, and a cured film of thickness 10 ?m formed using the active energy beam-curable ink exhibits a drawing ability exceeding 120% when stretched at a temperature of 170° C. at a strain rate of 2/min.Type: GrantFiled: July 21, 2006Date of Patent: January 31, 2012Assignee: Toyo Ink Mfg. Co., Ltd.Inventors: Kazuhiro Jonai, Yasuo Yoshihiro, Daisuke Nishida
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Publication number: 20100126529Abstract: Provided is a maintenance liquid for inkjet printers, which comprises at least one of glycol ethers and glycol esters represented by the following general formulas (1) to (3), and 45 to 10 mg/L of dissolved oxygen: R1CO(OR2)xOR3??General formula (1) R4CO(OR5)YOCOR6??General formula (2) R7(OR8)ZOR9??General formula (3) wherein R2, R5, and R8 each independently represent an ethylene group or a propylene group, R1, R3, R4, and R6 each independently represent an alkyl group having 1 to 4 carbon atoms, R7 and R9 each independently represent a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, and X, Y, and Z each independently represent an integer of 1 to 4.Type: ApplicationFiled: April 25, 2008Publication date: May 27, 2010Applicant: TOYO INK MFG. CO., TLDInventors: Eriko Seki, Seiji Aida, Yasuo Yoshihiro, Kaori Nakano, Ken Yamasaki
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Publication number: 20090226675Abstract: The present invention relates to an active energy beam-curable inkjet ink comprising a polymerizable monomer, wherein when a cured film obtained upon curing the ink is measured under conditions including an oscillation frequency of 1 Hz, the loss tangent (tan ?) at the glass transition temperature is 2 or greater.Type: ApplicationFiled: November 10, 2006Publication date: September 10, 2009Applicant: TOYO INK MFG, CO., LTD.Inventors: Yukitoshi Takahashi, Kazuhiro Jonai, Yasuo Yoshihiro
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Publication number: 20090171007Abstract: The present invention relates to an active energy beam-curable ink comprising polymerizable monomers, wherein relative to the total of all the polymerizable monomers, the polymerizable monomers comprise from 95 to 99.99% by weight of a monofunctional monomer and from 0.01 to 5% by weight of a polyfunctional monomer, and a cured film of thickness 10 ?m formed using the active energy beam-curable ink exhibits a drawing ability exceeding 120% when stretched at a temperature of 170° C. at a strain rate of 2/min.Type: ApplicationFiled: July 21, 2006Publication date: July 2, 2009Applicant: Toyo Ink Mfg. Co., Ltd.Inventors: Kazuhiro Jonai, Yasuo Yoshihiro, Daisuke Nishida
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Publication number: 20090117343Abstract: The present invention relates to an active energy beam-curable inkjet ink comprising a polymerizable monomer and a photopolymerization initiator, wherein the polymerizable monomer comprises at least 50% by weight of a monofunctional monomer, and the photopolymerization initiator comprises an initiator represented by either [formula 1] or [formula 2] shown below: (wherein, R1, R2, R3 and R4 each represent, independently, a hydrogen atom, halogen atom, hydroxyl group, amino group, alkyl group, alkoxy group or phenyl group, and n represents an integer from 2 to 10) (wherein, R1, R2 and R3 each represent, independently, a hydrogen atom, halogen atom, hydroxyl group, amino group, alkyl group, alkoxy group or phenyl group).Type: ApplicationFiled: November 10, 2006Publication date: May 7, 2009Applicant: Toyo Ink Mfg. Co., Ltd.Inventors: Daisuke Nishida, Kazuhiro Jonai, Yasuo Yoshihiro, Yukitoshi Takahashi
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Publication number: 20090068418Abstract: A display panel has a resin substrate and a printed layer formed on at least a part of the resin substrate through inkjet printing. The printed layer is formed from cured products of UV-curable inks each containing UV-curable monomers which are polymerized and cured by UV irradiation, and the printed layer has at least two such cured products having different pencil hardness values.Type: ApplicationFiled: August 28, 2008Publication date: March 12, 2009Applicants: DENSO CORPORATION, Toyo Ink Mfg. Co., Ltd.Inventors: Teruhiko Iwase, Takashi Aoki, Osamu Ina, Yasuo Yoshihiro, Yukitoshi Takahashi, Shinichi Sato
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Publication number: 20090053484Abstract: Provided is an active energy ray-curable inkjet ink comprising a pigment and polymerizable monomers that is superior in nozzle ejection stability, adhesiveness to recording medium and storage stability, wherein the polymerizable monomers comprise N-acryloyloxyethyl hexahydrophthalimide.Type: ApplicationFiled: February 16, 2007Publication date: February 26, 2009Applicant: TOYO INK MFG. CO., LTD.Inventors: Yasuo Yoshihiro, Yukitoshi Takahashi
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Patent number: 6913352Abstract: Disclosed is an active energy beam curable inkjet printing ink including a pigment, a compound containing two or more ethylenic double bonds, a compound containing one ethylenic double bond and having a molecular weight of 90 to 210, 2-benzyl-2-dimethylamino-1-(4-morpholinophenyl)-butanone-1 as a first initiator, and acylphosphine oxides as a second initiator. The ink has low viscosity, excellent photo-polymerizability, remarkably excellent curing property, good dispersion stability, causes no dissolution and swelling of ink contacting materials in a printer, and shows excellent discharge stability from nozzles, an excellent adherence property to a recording medium, excellent solvent resistance and water resistance.Type: GrantFiled: October 9, 2001Date of Patent: July 5, 2005Assignee: Toyo Ink Mfg. Co., Ltd.Inventors: Yasuo Yoshihiro, Kaori Nakano, Yoshihiro Fuse
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Publication number: 20040021753Abstract: Disclosed is an active energy beam curable inkjet printing ink comprising a pigment, a compound containing two or more ethylenic double bonds, a compound containing one ethylenic double bond and having a molecular weight of 90 to 210, 2-benzyl-2-dimethylamino-1-(4-morpholinophenyl)-butanone-1 as a first initiator, and acylphosphine oxides as a second initiator. The ink has low viscosity, excellent photo-polymerizability, remarkably excellent curing property, good dispersion stability, causes no dissolution and swelling of ink contacting materials in a printer, and shows excellent discharge stability from nozzles, an excellent adherence property to a recording medium, excellent solvent resistance and water resistance.Type: ApplicationFiled: April 10, 2003Publication date: February 5, 2004Inventors: Yasuo Yoshihiro, Kaori Nakano, Yoshihiro Fuse
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Publication number: 20020067394Abstract: Disclosed is a novel method for ink jet printing on a surface of a substrate made of a synthetic resin, the method comprising the steps of conducting a surface treatment to the surface so as to provide it with a specific surface free energy of 65-72 mJ/m2; providing an activation energy beam-curable ink having a surface tension of 25-40 mN/m; discharging the ink onto the surface with an ink jet printing device thereby forming printed portions of the ink on the surface; and projecting an activation energy beam onto the printed portions. According to the disclosed method, printing articles having desirable image qualities are obtained by achieving a uniform dot diameter of the drop of ink on a synthetic resin substrate by utilizing an ink jet printing process.Type: ApplicationFiled: October 9, 2001Publication date: June 6, 2002Applicant: Toyo Ink Mfg. Co., Ltd.Inventors: Yasuo Yoshihiro, Kaori Nakano, Yoshihiro Fuse