Patents Assigned to TOYO INK CO., LTD.
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Publication number: 20170137649Abstract: To provide an ink-jet white ink of active energy ray-curable type, wherein the white ink has high printing stability and good hiding property, and is particularly suitable for printing on the single-pass ink-jet printing system. An ink-jet white ink of active energy ray-curable type, comprising titanium oxide, a pigment dispersant, and a polymerizable compound, wherein the content of the titanium oxide is from 15 to 30% by weight with reference to the total weight of the ink, and wherein the weight average particle diameter of the titanium oxide is 180 to 250 nm. In an embodiment of the ink, the titanium oxide is titanium oxide that surface is treated with silica and the pigment dispersant comprises a basic dispersant.Type: ApplicationFiled: November 21, 2016Publication date: May 18, 2017Applicants: TOYO INK SC HOLDINGS CO., LTD., TOYO INK CO., LTD.Inventors: Yukitoshi TAKAHASHI, Norio Suzuki
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Publication number: 20170114234Abstract: An active energy ray-curable inkjet ink comprising an organic solvent having a boiling point of 140° C. to 300° C., and a polymerizable monomer containing 2-(2-vinyloxyethoxy)ethyl acrylate, wherein a content of the organic solvent is from 0.1 to 10% by weight with reference to the total weight of the ink, is shown. The ink has extremely high curability and discharge stability, and excellent adhesion to various base materials, and can be suitably used in inkjet printing.Type: ApplicationFiled: March 26, 2015Publication date: April 27, 2017Applicants: TOYO INK SC HOLDINGS CO., LTD., TOYO INK CO., LTD.Inventor: Yohei KONDA
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Publication number: 20170114239Abstract: An ink composition used for active energy ray-curable inkjet printing which has excellent curability and abrasion resistance, and which does not easily cause curing wrinkles and has excellent initiator solubility, little odor and low viscosity, is shown. The ink composition contains a pigment, a polymerizable compound and a photopolyrnerization initiator, wherein the polymerizable compound comprises 80 wt % or more of aliphatic ethylenically polymerizable compounds based on a total weight of the polymerizable compound, wherein the aliphatic ethylenically polymerizable compounds comprise polyfunctional (meth)acrylates including at least 2-(2-vinyloxyethoxy)ethyl acrylate and dipropylene glycol diacrylate, the photopolymerization initiator comprises an acyl phosphine oxide, and an amount of the dipropylene glycol diacrylate is 16 wt % or more and an amount of the acyl phosphine oxide is 10 wt % or more with respect to a total weight of the inkjet ink composition.Type: ApplicationFiled: March 26, 2015Publication date: April 27, 2017Applicants: TOYO INK SC HOLDINGS CO., LTD., TOYO INK CO., LTD.Inventors: Daisuke FUJIWARA, Tohru KONNO
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Publication number: 20170058134Abstract: Shown is an actinic ray-curable offset ink composition for foodstuff and pharmaceutical packaging which maintains superior curability without using a photosensitizer, which despite contributing to better curability (high productivity) tends to suffer from significant outward migration. The ink composition also suppresses outward migration of the monomers and photopolymerization initiators, and exhibits favorable adhesion to substrates.Type: ApplicationFiled: February 19, 2015Publication date: March 2, 2017Applicants: TOYO INK SC HOLDINGS CO., LTD., TOYO INK CO., LTD.Inventors: Seiji YAMAGUCHI, Shinsuke TSURUTANI
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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
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Patent number: 9534126Abstract: To provide an ink-jet white ink of active energy ray-curable type, wherein the white ink has high printing stability and good hiding property, and is particularly suitable for printing on the single-pass ink-jet printing system. An ink-jet white ink of active energy ray-curable type, comprising titanium oxide, a pigment dispersant, and a polymerizable compound, wherein the content of the titanium oxide is from 15 to 30% by weight with reference to the total weight of the ink, and wherein the weight average particle diameter of the titanium oxide is 180 to 250 nm. In an embodiment of the ink, the titanium oxide is titanium oxide that surface is treated with silica and the pigment dispersant comprises a basic dispersant.Type: GrantFiled: April 25, 2014Date of Patent: January 3, 2017Assignees: TOYO INK SC HOLDINGS CO., LTD., TOYO INK CO., LTD.Inventors: Yukitoshi Takahashi, Norio Suzuki
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Patent number: 9523938Abstract: An embodiment of the present invention relates to a polymeric dispersant for a liquid developer, which is obtained by copolymerizing at least an ethylenically unsaturated monomer having an amino group, an ethylenically unsaturated monomer having an alkyl group with a carbon number of 9 to 24, and an ethylenically unsaturated monomer represented by general formula (1) shown below: CH2?C(R1)COO(AO)nR2??General formula (1) wherein, R1 represents H or CH3, R2 represents a hydrogen atom or a hydrocarbon group having a carbon number of 1 to 22, n represents an integer of 1 to 200, and A represents an alkylene group having a carbon number of 2 to 4.Type: GrantFiled: October 17, 2013Date of Patent: December 20, 2016Assignees: TOYO INK SC HOLDINGS CO., LTD., TOYO INK CO., LTD.Inventors: Yuji Soneta, Kazumasa Hattori
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Patent number: 9523009Abstract: 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: GrantFiled: December 27, 2011Date of Patent: December 20, 2016Assignees: TOYO INK SC HOLDINGS CO., LTD., TOYO INK CO., LTD.Inventors: Toru Oya, Harunori Narihiro, Takefumi Nomura
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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
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Publication number: 20160222229Abstract: The present invention relates to a solvent-based inkjet ink containing at least a pigment, an organic solvent, a binder resin and a dispersant, wherein the dispersant has a weight average molecular weight (Mw) of at least 5,000 but less than 50,000, an acid value (mgKOH/g) of 5 to 20, and an amine value (mgKOH/g) of 5 to 50. The present invention enables a dispersion of low viscosity and good stability to be generated in an extremely short dispersion time, and is able to provide an inkjet ink which forms an ink coating film that suffers no whitening and has superior resistance (abrasion resistance and alcohol resistance).Type: ApplicationFiled: October 2, 2014Publication date: August 4, 2016Applicants: TOYO INK SC HOLDINGS CO., LTD., TOYO INK CO., LTD.Inventors: Kohei Yamada, Norio Suzuki, Daisuke Fujiwara, Shinsuke Tsurutani
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Patent number: 9296908Abstract: 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: GrantFiled: May 26, 2011Date of Patent: March 29, 2016Assignees: TOYO INK SC HOLDINGS CO., LTD., TOYO INK CO., LTD.Inventors: Takaaki Koike, Sachiko Kinoshita, Yoshiyuki Sakai, Akiko Nishina, Masayoshi Utsugi, Yukitoshi Takahashi, Atsushi Yoda, Masahiro Sugihara
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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
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Publication number: 20160060472Abstract: To provide an ink-jet white ink of active energy ray-curable type, wherein the white ink has high printing stability and good hiding property, and is particularly suitable for printing on the single-pass ink-jet printing system. An ink-jet white ink of active energy ray-curable type, comprising titanium oxide, a pigment dispersant, and a polymerizable compound, wherein the content of the titanium oxide is from 15 to 30% by weight with reference to the total weight of the ink, and wherein the weight average particle diameter of the titanium oxide is 180 to 250 nm. In an embodiment of the ink, the titanium oxide is titanium oxide that surface is treated with silica and the pigment dispersant comprises a basic dispersant.Type: ApplicationFiled: April 25, 2014Publication date: March 3, 2016Applicants: TOYO INK SC HOLDINGS CO., LTD., TOYO INK CO., LTD.Inventors: Yukitoshi TAKAHASHI, Norio SUZUKI
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Publication number: 20160046816Abstract: To provide an aqueous ink for inkjet which has superior printability to typical printing media, particularly media having high glossiness, such as coated paper, art paper, and vinyl chloride sheets, and which is capable of forming a high quality image by printing. An aqueous ink for inkjet, comprising a pigment, a pigment dispersing resin, an organic solvent, and water, wherein: the organic solvent contains (A) a water-soluble organic solvent having a boiling point of 100° C. or higher and 180° C. or lower, and (B) an organic solvent having a boiling point of 200° C. or higher and 280° C. or lower, and having a surface tension of 20 mN/m or more and 30 mN/m or less.Type: ApplicationFiled: April 11, 2014Publication date: February 18, 2016Applicants: TOYO INK SC HOLDINGS CO., LTD., TOYO INK CO., LTD.Inventors: Yukitoshi TAKAHASHI, Masahiro SUGIHARA
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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
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Publication number: 20150353746Abstract: The present invention relates to an oil-based printing ink varnish comprising a polyurethane prepared using a polymeric polyol and a polyisocyanate as the main structural components, wherein the polyurethane is synthesized using, as a chain extender, a polyfunctional amine which contains at least one secondary amino group in each molecule and in which the total of the number of primary amino groups and the number of secondary amino groups is 3 or more per molecule. The present invention is able to provide a printing ink varnish containing a non-aromatic organic solvent and having excellent laminate strength, blocking resistance, dot reproducibility and plate clogging resistance, as well as a laminate ink containing the varnish.Type: ApplicationFiled: January 10, 2014Publication date: December 10, 2015Applicants: TOYO INK SC HOLDINGS CO., LTD., TOYO INK CO., LTD.Inventors: Satotaro TANAKA, Harunori NARIHIRO, Nobutaka TAKENAKA, Yuika HAYASAKA
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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
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Publication number: 20150268579Abstract: An embodiment of the present invention relates to a polymeric dispersant for a liquid developer, which is obtained by copolymerizing at least an ethylenically unsaturated monomer having an amino group, an ethylenically unsaturated monomer having an alkyl group with a carbon number of 9 to 24, and an ethylenically unsaturated monomer represented by general formula (1) shown below: CH2?C(R1)COO(AO)nR2??General formula (1) wherein, R1 represents H or CH3, R2 represents a hydrogen atom or a hydrocarbon group having a carbon number of 1 to 22, n represents an integer of 1 to 200, and A represents an alkylene group having a carbon number of 2 to 4.Type: ApplicationFiled: October 17, 2013Publication date: September 24, 2015Applicants: TOYO INK SC HOLDINGS CO., LTD., TOYO INK CO., LTD.Inventors: Yuji Soneta, Kazumasa Hattori
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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
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Publication number: 20150197649Abstract: The present invention relates to an alcohol-based printing ink composition, comprising a colorant (E), a medium and a polyurethane urea resin (D) obtained by reacting a polyol (A), a diisocyanate (B) and a chain extender (C), wherein the polyol (A) comprises a polyester polyol (A0) having a repeating unit derived from a saturated hydroxycarboxylic acid having a side chain, and the medium comprises an alcohol (F), wherein the proportion of the alcohol (F) is at least 50% by weight relative to a value of 100% by weight for the total medium. Accordingly, the invention provides a printing ink comprising an alcohol having minimal environmental impact as the main component of the ink medium, the ink exhibiting excellent colorant dispersibility and storage stability, and having excellent re-solubility during long runs.Type: ApplicationFiled: June 27, 2013Publication date: July 16, 2015Applicants: TOYO INK SC HOLDINGS CO., LTD., TOYO INK CO., LTD.Inventors: Toru Oya, Yuki Sato, Yoshitaka Tone, Harunori Narihiro