Patents Assigned to TOYO INK CO., LTD.
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Patent number: 9040150Abstract: Provided is an ink composition used in active energy ray-curable inkjet printing, which has excellent curing property, discharge property, storage stability, and compatibility with various substrates. The inkjet ink composition of the present invention includes at least two types of polymerizable compounds selected from a group consisting of (A) 2-(2-vinyloxyethoxy) ethyl acrylate, (B) N-vinyl caprolactam, and (C) at least one type of bifunctional acrylate monomer including at least a diacrylate having a molecular weight of 250 or less.Type: GrantFiled: August 29, 2012Date of Patent: May 26, 2015Assignees: TOYO INK SC HOLDINGS CO., LTD., TOYO INK CO., LTD.Inventors: Yuji Kameyama, Mayuko Okamoto, Yohei Konda, Kazuhiro Jonai, Norio Suzuki
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Patent number: 8933141Abstract: An ink composition which is used for active energy ray-curable inkjet printing, has excellent curability or adhesiveness to multiple base materials while having low viscosity, and exhibits excellent non-yellowing properties of the printed matter is provided. The composition comprises a polymerizable monomer (A) and photopolymerization initiators (B), the polymerizable monomer comprising 2-(2-vinyloxyethoxy)ethyl acrylate (A-1), and the photopolymerization initiators comprising oligo(2-hydroxy-2-methyl-1-(4-(1-methylvinyl)phenyl)propanone) (B-1) and other initiator (B-2).Type: GrantFiled: March 29, 2012Date of Patent: January 13, 2015Assignees: Toyo Ink SC Holdings Co., Ltd., Toyo Ink Co., Ltd.Inventors: Norio Suzuki, Kazuhiro Jonai, Mayuko Okamoto, Yuji Kameyama, Yohei Konda
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Publication number: 20140224150Abstract: The present invention provides an active energy ray-curable inkjet magenta ink composition that achieves excellent color reproducibility and is also excellent in storage stability, and an ink set using the composition. The magenta ink composition according to the present invention contains, as two kinds of quinacridone pigments, (A) unsubstituted quinacridone and (B) 2,9-dimethylquinacridone.Type: ApplicationFiled: August 29, 2012Publication date: August 14, 2014Applicants: TOYO INK CO., LTD., TOYO INK SC HOLDINGS CO., LTD.Inventors: Yohei Konda, Mayuko Okamoto, Yuji Kameyama, Kazuhiro Jonai, Norio Suzuki
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Publication number: 20140212634Abstract: Provided is an ink composition used in active energy ray-curable inkjet printing, which has excellent curing property, discharge property, storage stability, and compatibility with various substrates. The inkjet ink composition of the present invention includes at least two types of polymerizable compounds selected from a group consisting of (A) 2-(2-vinyloxyethoxy)ethyl acrylate, (B) N-vinyl caprolactam, and (C) at least one type of bifunctional acrylate monomer including at least a diacrylate having a molecular weight of 250 or less.Type: ApplicationFiled: August 29, 2012Publication date: July 31, 2014Applicants: TOYO INK CO., LTD., TOYO INK SC HOLDINGS CO., LTD.Inventors: Yuji Kameyama, Mayuko Okamoto, Yohei Konda, Kazuhiro Jonai, Norio Suzuki
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Patent number: 8691885Abstract: Specifically provided is a single pass-curable ink having high color reproducibility and high curing properties at the same time and having high dischargeability when used in printing at high frequency and high jetting speed, as compared with conventional ones. An active energy ray-curable inkjet ink composition contains a metal lake pigment of a rhodamine dye as a pigment, and the active energy ray-curable inkjet ink composition may contain 0.5 to 10% by weight of Pigment Violet 1, Pigment Violet 1:1, Pigment Violet 2, Pigment Violet 2:2, Pigment Red 81, Pigment Red 81:1, Pigment Red 81:2, Pigment Red 81:3, Pigment Red 81:4, Pigment Red 81:5, Pigment Red 169, or Pigment Red 173 as the metal lake pigment of the rhodamine dye based on the total weight of the ink.Type: GrantFiled: October 23, 2012Date of Patent: April 8, 2014Assignees: Toyo Ink SC Holdings Co., Ltd., Toyo Ink Co., Ltd.Inventors: Mayuko Okamoto, Kazuhiro Jonai, Tohru Konno
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Publication number: 20140069294Abstract: Provided is an active energy ray-curable inkjet ink with high productivity which has the same quality level as the conventional printing and which contains an isoindoline-based pigment having a specific electric conductance, which is measured according to DIN ISO 787/14, of 150 ?S/cm or less.Type: ApplicationFiled: September 11, 2013Publication date: March 13, 2014Applicants: TOYO INK CO., LTD., TOYO INK SC HOLDINGS CO., LTD.Inventors: Mayuko OKAMOTO, Tohru KONNO, Kazuhiro JONAI
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Publication number: 20140066550Abstract: Provided is an inkjet pigment ink which contains a pigment that is selected from the group consisting of C.L. Pigment Yellow 74 having a transmittance of 70% or more, C.I. Pigment Red 269 having a transmittance of 70% or more, C.I. Pigment Red 122 having a transmittance of less than 70% and C.I. Pigment Yellow 150; a water-soluble solvent that is selected from the group consisting of glycol ethers and diols; water; and a pigment dispersing resin that is a copolymer which contains a monomer A, a monomer B and a monomer C as unit components. The monomer A is an alkyl (meth)acrylate ester; the monomer B is styrene, ?-methyl styrene or benzyl (meth)acrylate; and the monomer C is (meth)acrylic acid.Type: ApplicationFiled: March 9, 2012Publication date: March 6, 2014Applicants: TOYO INK CO., LTD., TOYO INK SC HOLDINGS CO., LTD.Inventors: Kazunori Shigemori, Natsuko Kokubo, Joji Mikami, Masataka Utsugi, Yasutaka Itimura, Satoshi Washio, Yukitoshi Takahashi, Atsushi Yoda, Masahiro Sugihara
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Publication number: 20140053753Abstract: The present invention provides an ink composition for use in active energy beam-curable inkjet printing, wherein the ink composition has low viscosity yet exhibits superior curability and superior adhesion to many different substrates, and also exhibits excellent storage stability. An active energy beam-curable inkjet ink composition containing at least polymerizable monomers (A) and a stabilizer (B), and containing essentially no water, the inkjet ink composition containing, as the polymerizable monomers (A), at least a polymerizable monomer (A-1) containing a vinyl ether group and an acryloyl group, and a polymerizable monomer (A-2) containing 2 or more acryloyl groups.Type: ApplicationFiled: March 29, 2012Publication date: February 27, 2014Applicants: TOYO INK CO., LTD., TOYO INK SC HOLDINGS CO., LTD.Inventors: Norio Suzuki, Kazuhiro Jonai, Mayuko Okamoto, Yuji Kameyama, Yohei Konda
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Publication number: 20130289185Abstract: An alcohol-based printing ink composition comprising: a polyurethane urea resin (D) that is obtained by a reaction of polyol (A), diisocyanate (B), and a chain extender (C); a coloring agent (E); and a medium comprising an alcohol (F) and water, wherein the polyol (A) contains polyether polyol (A1) and polyester polyol (A2), and the medium comprises 75% by weight or more of alcohol (F).Type: ApplicationFiled: December 27, 2011Publication date: October 31, 2013Applicants: TOYO INK CO., LTD., TOYO INK SC HOLDINGS CO., LTD.Inventors: Toru Oya, Harunori Narihiro, Takefumi Nomura
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Patent number: 8507573Abstract: There is provided an inkjet ink which has satisfactory storage stability and inkjet ejection stability, exhibits excellent curability, and is capable of forming high quality images on coated paper by an inkjet system. Disclosed is an active energy ray curable inkjet ink composition comprising: 15-75% by weight of at least one polymerizable bifunctional monomer selected from the group consisting of dipropylene glycol diacrylate and 1,9-nonanediol diacrylate; and 1% by weight to 10% by weight of [4-(methylphenylthio)phenyl]phenylmethanone as a photopolymerization initiator.Type: GrantFiled: June 29, 2011Date of Patent: August 13, 2013Assignees: Toyo Ink SC Holdings Co., Ltd., Toyo Ink Co., Ltd.Inventors: Yuji Kameyama, Norio Suzuki, Yohei Konda, Kazuhiro Jonai
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Publication number: 20130139722Abstract: Specifically provided is a single pass-curable ink having high color reproducibility and high curing properties at the same time and having high dischargeability when used in printing at high frequency and high jetting speed, as compared with conventional ones. An active energy ray-curable inkjet ink composition contains a metal lake pigment of a rhodamine dye as a pigment, and the active energy ray-curable inkjet ink composition may contain 0.5 to 10% by weight of Pigment Violet 1, Pigment Violet 1:1, Pigment Violet 2, Pigment Violet 2:2, Pigment Red 81, Pigment Red 81:1, Pigment Red 81:2, Pigment Red 81:3, Pigment Red 81:4, Pigment Red 81:5, Pigment Red 169, or Pigment Red 173 as the metal lake pigment of the rhodamine dye based on the total weight of the ink.Type: ApplicationFiled: October 23, 2012Publication date: June 6, 2013Applicants: TOYO INK CO., LTD., TOYO INK SC HOLDINGS CO., LTD.Inventors: TOYO INK SC HOLDINGS CO., LTD., TOYO INK CO., LTD.
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Publication number: 20130079447Abstract: An aqueous inkjet ink composition comprising a pigment, a pigment-dispersing resin, resin fine particles (A), water, and hydrophilic solvents (B), the resin fine particles (A) being formed by emulsion polymerizing ethylenically unsaturated monomers including: 20% to 80% by weight of an aromatic ethylenically unsaturated monomer (C) that does not have an ionic functional group; 0.6% to 6% by weight of water-soluble ethylenically unsaturated monomers (F) consisting of 0.5% to 3% by weight of a sulfonic acid group-containing ethylenically unsaturated monomer (D) and 0.1% to 3% by weight of a nonionic water-soluble ethylenically unsaturated monomer (E); and 0.1% to 10% by weight of a crosslinkable ethylenically unsaturated monomer (G), and the hydrophilic solvents (B) including a glycol-based solvent (H) and an ethylene glycol ether-based solvent (I) is provided.Type: ApplicationFiled: May 26, 2011Publication date: March 28, 2013Applicants: TOYO INK CO., LTD., TOYO INK SC HOLDINGS CO., LTD.Inventors: Takaaki Koike, Sachiko Kinoshita, Yoshiyuki Sakai, Akiko Nishina, Masataka Utsugi, Yukitoshi Takahashi, Atsushi Yoda, Masahiro Sugihara
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Publication number: 20130045342Abstract: Provided is a coating agent for forming an inkjet ink-receiving layer, which is intended to have excellent water resistance, to have suppressed occurrence of white spots/white streaks of images, and to have satisfactory ink dryability and excellent image forming properties, and which contains a crosslinked vinyl emulsion formed by emulsion polymerization of a monomer mixture including (A) a monomer having two or more ethylenically unsaturated groups, (B) a monomer having a carboxyl group and one ethylenically unsaturated group, and (C) a monomer having a hydrophobic group having 1 to 12 carbon atoms and one ethylenically unsaturated group.Type: ApplicationFiled: January 27, 2011Publication date: February 21, 2013Applicants: TOYO INK CO., LTD., TOYO INK SC HOLDINGS CO., LTD.Inventors: Yuji Soneta, Shinsuke Yamada, Yuko Fujisaki, Hiromi Yokoyama, Yukifumi Mashimo, Kinya Shiraishi, Masashi Koide
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Publication number: 20120252919Abstract: An ink composition which is used for active energy ray-curable inkjet printing, has excellent curability or adhesiveness to multiple base materials while having low viscosity, and exhibits excellent non-yellowing properties of the printed matter is provided. The composition comprises a polymerizable monomer (A) and photopolymerization initiators (B), the polymerizable monomer comprising 2-(2-vinyloxyethoxy)ethyl acrylate (A-1), and the photopolymerization initiators comprising oligo(2-hydroxy-2-methyl-1-(4-(1-methylvinyl)phenyl)propanone) (B-1) and other initiator (B-2).Type: ApplicationFiled: March 29, 2012Publication date: October 4, 2012Applicants: TOYO INK CO., LTD., TOYO INK SC HOLDINGS CO., LTD.Inventors: Norio Suzuki, Kazuhiro Jonai, Mayuko Okamoto, Yuji Kameyama, Yohei Konda
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Publication number: 20120003435Abstract: There is provided an inkjet ink which has satisfactory storage stability and inkjet ejection stability, exhibits excellent curability, and is capable of forming high quality images on coated paper by an inkjet system. Disclosed is an active energy ray curable inkjet ink composition comprising: 15-75% by weight of at least one polymerizable bifunctional monomer selected from the group consisting of dipropylene glycol diacrylate and 1,9-nonanediol diacrylate; and 1% by weight to 10% by weight of [4-(methylphenylthio)phenyl]phenylmethanone as a photopolymerization initiator.Type: ApplicationFiled: June 29, 2011Publication date: January 5, 2012Applicants: TOYO INK CO., LTD., TOYO INK SC HOLDINGS CO., LTD.Inventors: Yuji KAMEYAMA, Norio SUZUKI, Yohei KONDA, Kazuhiro JONAI
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Publication number: 20070202272Abstract: A red-colored film in which when an elliptically polarized light is incident on the film in a direction 45° aslant from a normal line direction with respect to a surface of the film, a light transmitted through the film has an average amplitude transmittance ratio (av. tan ?) in a wavelength region of 575 to 635 nm, which satisfies the following equation (1): 0.960<av. tan ?<1.040 ??(1). A red-colored composition contains a red pigment A having a BET specific surface area in the range from 90 to 140 m2/g, a red pigment B having a BET specific surface area in the range from 70 to 85 m2/g, and a pigment carrier formed of a transparent resin, a precursor of the transparent resin or a mixture of the tarns parent resin and precursor thereof. A color filter has the red-colored film as a red color filter segment. The liquid crystal display device includes the color filter.Type: ApplicationFiled: June 29, 2006Publication date: August 30, 2007Applicants: TOYO INK CO., LTD., TOPPAN PRINTING CO., LTD.Inventors: Masayuki Yamamoto, Akira Hirano, Hideyo Tanaka, Yusuke Iida, Satoshi Ohkuma, Koichi Minato, Takeshi Itoi, Hidesato Hagiwara