Patents by Inventor Kazuhiro Jonai
Kazuhiro Jonai 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).
-
Publication number: 20190330486Abstract: The invention provides a magenta ink for inkjet which yields distinct images having high gloss and no density irregularities or voids upon inkjet printing onto low-absorption substrates, exhibits excellent discharge stability after long standby periods, and can provide excellent drying properties even during high-speed printing; and also provides an ink set that can suppress mixed color bleeding and achieve superior color reproducibility.Type: ApplicationFiled: December 22, 2017Publication date: October 31, 2019Applicants: TOYO INK SC HOLDINGS CO., LTD., TOYO INK CO., LTD.Inventors: Masahiro SUGIHARA, Atsushi YODA, Yoshihito SUZUKI, Kazuhiro JONAI
-
Publication number: 20190077978Abstract: A water-based ink-jet which at least contains a pigment, a water-soluble organic solvent, and a surfactant (A), wherein the water-soluble organic solvent is a water-soluble organic solvent having an HLB value determined by Griffin's method of 8 or less, the water-soluble organic solvent being contained in an amount of 10-50 wt % with respect to the total weight of the water based ink-jet ink, and the surfactant (A) comprises an acetylenediol-based surfactant (a1) having an HLD value determined by Griffin's method of 3 or less.Type: ApplicationFiled: March 14, 2017Publication date: March 14, 2019Applicants: TOYO INK SC HOLDINGS CO., LTD., TOYO INK CO., LTD.Inventors: Yoshihito SUZUKI, Masahiro SUGIHARA, Masayoshi UTSUGI, Kazuhiro JONAI
-
Publication number: 20190016911Abstract: A pretreatment solution which is used together with an aqueous inkjet ink that contains at least a pigment, wherein the pretreatment solution contains an inorganic metal salt and/or an organic metal salt that exists in a dissolved state, and an organic solvent, the organic solvent contains a compound having one or more hydroxyl groups in each molecule, and the amount of the organic solvent is from 0.1 to 50% by weight based on the total weight of the pretreatment solution.Type: ApplicationFiled: January 13, 2017Publication date: January 17, 2019Applicants: TOYO INK SC HOLDINGS CO., LTD., TOYO INK CO., LTD.Inventors: Mayuko OKAMOTO, Atsushi YODA, Yoshihito SUZUKI, Kazuhiro JONAI
-
Publication number: 20180187033Abstract: The present invention relates to an ink set for inkjet recording containing a white ink and color inks including a cyan ink, a magenta ink and a yellow ink, wherein each ink independently contains a pigment, a pigment dispersing resin, an organic solvent and water, the pigment dispersing resin A of either the white ink or the color inks has an alkyl chain with a carbon number of 10 or greater, the pigment dispersing resin B of the other of the white ink or the color inks has a polyoxyalkylene chain, and the pigment dispersing resin A and the pigment dispersing resin B are different resins. According to the present invention, an ink set for inkjet recording can be provided that exhibits excellent printability during high-speed printing, even when printing onto less permeable substrates, and is capable of producing sharp image quality with little mixed color bleeding.Type: ApplicationFiled: February 18, 2016Publication date: July 5, 2018Applicants: TOYO INK SC HOLDINGS CO., LTD., TOYO INK CO., LTD.Inventors: Masahiro SUGIHARA, Yoshihito SUZUKI, Kazuhiro JONAI
-
Patent number: 10000649Abstract: The disclosure relates to an active energy ray-curable inkjet ink composition comprising at least a monomer and a pigment, wherein the monomer comprises at least 2-(2-vinyloxyethoxy)ethyl acrylate and dipropylene glycol diacrylate. A content of 2-(2-vinyloxyethoxy)ethyl acrylate is 36 to 65% by weight in a total weight of the ink. A content of dipropylene glycol diacrylate is 31 to 63% by weight in the total weight of the ink. A content of the pigment is 1 to c % by weight in the total weight of the ink, wherein the c is the pigment concentration at which the average absorbance at 320-380 nm in 2,000-fold dilution of the ink composition with dipropylene glycol diacrylate is 1.Type: GrantFiled: March 14, 2014Date of Patent: June 19, 2018Assignees: TOYO INK SC HOLDINGS CO., LTD., TOYO INK CO., LTD.Inventors: Mayuko Okamoto, Yuji Kameyama, Kazuhiro Jonai
-
Patent number: 9884973Abstract: The present disclosure relates to an active energy ray curable inkjet ink for use in a single pass printing inkjet system, the inkjet ink containing a colorant, a monomer and at least one initiator, wherein the sum of the integrated value(s) of absorbance across wavelengths from 380 to 410 nm of the initiator(s) is at least 35, and 0.02?amount of initiator/amount of monomer?0.50 (weight ratio) is satisfied. The disclosure also relates to an ink set including the ink. The present disclosure is able to show printed articles that exhibit no wrinkling or tack, excellent color reproducibility, and reduced amounts of residual components within the cured film of printed articles, while offering high productivity, and can also show an active energy ray-curable inkjet ink cured film which has a low residue ratio and is of low-odor, while exhibiting similar print quality and productivity to existing printing systems.Type: GrantFiled: October 23, 2014Date of Patent: February 6, 2018Assignees: TOYO INK SC HOLDINGS CO., LTD., TOYO INK CO., LTD.Inventors: Mayuko Okamoto, Daisuke Fujiwara, Yuji Kameyama, Kazuhiro Jonai
-
Patent number: 9809723Abstract: 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: GrantFiled: September 11, 2013Date of Patent: November 7, 2017Assignees: TOYO INK SC HOLDINGS CO., LTD., TOYO INK CO., LTD.Inventors: Mayuko Okamoto, Tohru Konno, Kazuhiro Jonai
-
Publication number: 20170002218Abstract: The disclosure relates to an active energy ray-curable inkjet ink composition comprising at least a monomer and a pigment, wherein the monomer comprises at least 2-(2-vinyloxyethoxy)ethyl acrylate and dipropylene glycol diacrylate. A content of 2-(2-vinyloxyethoxy)ethyl acrylate is 36 to 65% by weight in a total weight of the ink. A content of dipropylene glycol diacrylate is 31 to 63% by weight in the total weight of the ink. A content of the pigment is 1 to c % by weight in the total weight of the ink, wherein the c is the pigment concentration at which the average absorbance at 320-380 nm in 2,000-fold dilution of the ink composition with dipropylene glycol diacrylate is 1.Type: ApplicationFiled: March 14, 2014Publication date: January 5, 2017Applicants: TOYO INK SC HOLDINGS CO., LTD., TOYO INK CO., LTD.Inventors: Mayuko OKAMOTO, Yuji KAMEYAMA, Kazuhiro JONAI
-
Publication number: 20160251527Abstract: The present disclosure relates to an active energy ray curable inkjet ink for use in a single pass printing inkjet system, the inkjet ink containing a colorant, a monomer and at least one initiator, wherein the sum of the integrated value(s) of absorbance across wavelengths from 380 to 410 nm of the initiator(s) is at least 35, and 0.02?amount of initiator/amount of monomer?0.50 (weight ratio) is satisfied. The disclosure also relates to an ink set including the ink. The present disclosure is able to show printed articles that exhibit no wrinkling or tack, excellent color reproducibility, and reduced amounts of residual components within the cured film of printed articles, while offering high productivity, and can also show an active energy ray-curable inkjet ink cured film which has a low residue ratio and is of low-odor, while exhibiting similar print quality and productivity to existing printing systems.Type: ApplicationFiled: October 23, 2014Publication date: September 1, 2016Applicants: TOYO INK SC HOLDINGS CO., LTD., TOYO INK CO., LTD.Inventors: Mayuko OKAMOTO, Daisuke FUJIWARA, Yuji KAMEYAMA, Kazuhiro JONAI
-
Patent number: 9284466Abstract: To provide an active energy ray-curable inkjet ink set including ink of at least two different colors, wherein a blending amount of a surface tension adjusting agent to be blended in ink of each color is 1.0 to 5.0% by weight with respect to a total amount of the ink of each color, a difference in the blending amount of the surface tension adjusting agent in the ink of each color is 0.5% by weight or less with respect to a total amount of the ink of each color according to an order of printing, and a difference between maximum and minimum in the blending amount of the surface tension adjusting agent in the ink of each color is made to be 2% by weight or less.Type: GrantFiled: April 3, 2013Date of Patent: March 15, 2016Assignees: TOYO INK SC HOLDINGS CO., LTD., TOYO INK CO., LTD.Inventors: Yohei Konda, Yuji Kameyama, Kazuhiro Jonai
-
Publication number: 20160032226Abstract: Provided is a non-aqueous maintenance liquid for an active energy ray-curable inkjet ink which can be used as a cleaning liquid for removing the inkjet ink and as a preserving liquid to fill the head when the printer is not in operation. The non-aqueous maintenance liquid for an active energy ray-curable inkjet ink of the present invention comprises a main liquid component, a pigment dispersant resin, and a surface control agent, wherein the main liquid component is an organic solvent and/or an active energy ray-curable compound, and the amount of the surface control agent is 0.01 to 10% by weight in 100% by weight of the maintenance liquid.Type: ApplicationFiled: April 16, 2014Publication date: February 4, 2016Applicants: TOYO INK SC HOLDINGS CO., LTD., TOYO INK CO.,LTD.Inventors: Yuji KAMEYAMA, Yohei KONDA, Kazuhiro JONAI
-
Patent number: 9157000Abstract: 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: GrantFiled: March 29, 2012Date of Patent: October 13, 2015Assignees: TOYO INK SC HOLDINGS CO., LTD., TOYO INK CO., LTD.Inventors: Norio Suzuki, Kazuhiro Jonai, Mayuko Okamoto, Yuji Kameyama, Yohei Konda
-
Patent number: 9109130Abstract: 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: GrantFiled: August 29, 2012Date of Patent: August 18, 2015Assignees: TOYO INK SC HOLDINGS CO., LTD., TOYO INK CO., LTD.Inventors: Yohei Konda, Mayuko Okamoto, Yuji Kameyama, Kazuhiro Jonai, Norio Suzuki
-
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
-
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
-
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
-
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
-
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
-
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
-
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