Patents by Inventor Koji Okomori
Koji Okomori 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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Publication number: 20130011553Abstract: Herein provided are processes for preparing coated printing paper having good print quality by spray coating. Specifically, a coated printing paper is prepared by a process for preparing a coated printing paper having one or more coating layers on at least one side of a base paper, comprising the steps of: preparing a spray coating solution containing a pigment and an binder including a starch, wherein (a) the starch is present at 30-100% by weight of the total amount of the binder, and (b) the Brookfield viscosity measured at 30° C., 100 rpm is 300 mPa·s or less; and applying the coating solution by spray coating to form the outermost coating layer.Type: ApplicationFiled: March 29, 2011Publication date: January 10, 2013Applicant: NIPPON PAPER INDUSTRIES CO., LTD.Inventors: Riichi Muramatsu, Koji Okomori, Masanori Kawashima, Masashi Okamoto, Keisuke Tagami, Shu Arahi
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Publication number: 20120043372Abstract: The present invention aims to provide a cast-coated paper having good coated paper quality and printability combined with the property of decomposing hazardous substances upon exposure to light. A cast-coated paper prepared by applying a cast-coating layer based on a pigment and a binder on abase paper and finished by pressing the cast-coating layer in the wet state against a heated cast drum surface and drying it, wherein the cast-coating layer contains 1-30 parts by weight of titanium dioxide having an average secondary particle diameter of 300-2000 nm per 100 parts by weight of the pigment and the titanium dioxide is premixed with a silica sol or alumina sol at a ratio of the titanium dioxide to the silica sol or alumina sol of 2:1-1:2.Type: ApplicationFiled: June 7, 2007Publication date: February 23, 2012Applicants: NIPPON PAPER CRECIA CO., LTD., NIPPON PAPER INDUSTRIES CO., LTD.Inventors: Hiroshi Koyamoto, Koji Kutsuwa, Masashi Okamoto, Hidehiko Kai, Koji Okomori, Takashi Ochi, Noriyuki Ishibashi, Nobumasa Hayashi
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Patent number: 8101046Abstract: The present invention provides methods for producing a base paper for coated printing paper and a coated paper by neutral papermaking using a roll and blade gap former type paper machine including a drainage mechanism based on a drainage blade immediately downstream of initial drainage via a forming roll, comprising adding a cationic polyacrylamide-based material having a weight-average molecular weight of 10,000,000 or more determined by intrinsic viscosity measurement as a retention aid to a stock to convert it into paper. According to the present invention, the retention, formation and internal bond strength of the stock can be improved. In the present invention, an anionic microparticle and/or a coagulant can also be used.Type: GrantFiled: March 31, 2008Date of Patent: January 24, 2012Assignee: Nippon Paper Industries, Co. Ltd.Inventors: Shisei Goto, Takashi Yamaguchi, Tsukasa Oba, Masaki Ito, Koji Okomori
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Patent number: 7901542Abstract: The present invention aims to provide coated papers for newsprint inks having fast ink drying properties comparable to those of conventional newsprint papers, without stickiness, and having good reproduction and sharpness of printed images comparable to those of coated papers printed using penetration drying type inks; as well as processes for preparing them. The invention provides for a coated printing paper for newsprint inks comprising a coating layer containing a pigment and an adhesive on a base paper, characterized in that the coating layer on the base paper has a coat weight of 4.0 g/m2 or more per side and that the coated paper has an oil absorbency under pressure of 20 g/m2 or more and a Bekk smoothness of 75 seconds or less; as well as a process for preparing the paper.Type: GrantFiled: December 27, 2004Date of Patent: March 8, 2011Assignee: Nippon Paper Industries Co., Ltd.Inventors: Hiroshi Koyamoto, Koji Okomori, Masahito Suzuki, Hirokazu Morii
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Publication number: 20100300633Abstract: The present invention provides methods for producing a base paper for coated printing paper and a coated paper by neutral papermaking using a roll and blade gap former type paper machine including a drainage mechanism based on a drainage blade immediately downstream of initial drainage via a forming roll, comprising adding a cationic polyacrylamide-based material having a weight-average molecular weight of 10,000,000 or more determined by intrinsic viscosity measurement as a retention aid to a stock to convert it into paper. According to the present invention, the retention, formation and internal bond strength of the stock can be improved. In the present invention, an anionic microparticle and/or a coagulant can also be used.Type: ApplicationFiled: March 31, 2008Publication date: December 2, 2010Applicant: NIPPON PAPER INDUSTRIES CO., LTD.Inventors: Shisei Goto, Takashi Yamaguchi, Tsukasa Oba, Masaki Ito, Koji Okomori
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Patent number: 7828933Abstract: A coated sheet for web offset printing which includes a pigment coating layer containing a pigment and an adhesive formed on a base paper, and a surface layer containing a surface-sizing agent and a plastic pigment formed on the pigment coating layer.Type: GrantFiled: September 27, 2002Date of Patent: November 9, 2010Assignee: Nippon Paper Industries Co., Ltd.Inventors: Koji Okomori, Chizuru Wakai, Hirokazu Morii
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Patent number: 7575802Abstract: The present invention aims to provide coated printing papers having fast ink drying properties comparable to those of conventional newsprint, without stickiness, having good printability such as sharpness of printed images comparable to those of coated papers, as well as having the effect of decomposing harmful substances by exposure to light, especially when using penetration drying type news inks. A coated printing paper is provided, comprising a coating layer containing a pigment and an adhesive on a base paper, characterized in that a fine titanium oxide powder having a photocatalytic effect is contained in the coating layer and that the coated paper has an oil absorbency of 20 g/m2 or more under pressure and a Bekk smoothness of 75 seconds or less.Type: GrantFiled: December 1, 2005Date of Patent: August 18, 2009Assignee: Nippon Paper Industries Co., Ltd.Inventors: Akinobu Chatani, Koji Okomori, Hiroshi Koyamoto, Hitoshi Nagao, Hirokazu Morii
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Publication number: 20090162641Abstract: The present invention aims to provide coated printing paper having good printing quality combined with the property of decomposing hazardous substances upon exposure to light and resistance to fading. Coated printing paper comprising a coating layer containing a pigment and an inorganic adhesive and an organic adhesive on a base paper, wherein the coating layer contains 1-30 parts by weight of titanium dioxide having an average secondary particle diameter of 300-2000 nm per 100 parts by weight of the pigment and the coated paper has a PPS roughness of 0.5-5.0 ?m.Type: ApplicationFiled: December 14, 2006Publication date: June 25, 2009Applicant: NIPPON PAPER INDUSTRIES CO., LTD.Inventors: Hiroshi Koyamoto, Masashi Okamoto, Koji Okomori, Takashi Ochi
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Publication number: 20080096008Abstract: The present invention is an electrophotographic transfer paper having a coating layer containing a pigment and a binder on at least one side of a base paper comprising a pulp and a filler, and excellent transport characteristics in high-speed copy machines and printers. 30 wt % or more of the pigment is kaolin having a particle size distribution wherein 65% or more particles are in a range of 0.4-4.2 ?m based on volume, and/or delaminated clay having an average particle size of 3.5-20 ?m. The clark stiffness in the CD direction of the electrophotographic transfer paper is 20 cm3/100 or more.Type: ApplicationFiled: September 29, 2005Publication date: April 24, 2008Inventors: Jiro Yoshimura, Hisahiro Omote, Masahito Suzuki, Koji Okomori, Dai Nagahara
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Publication number: 20070240838Abstract: The present invention aims to provide coated papers for newsprint inks having fast ink drying properties comparable to those of conventional newsprint papers, without stickiness, and having good reproduction and sharpness of printed images comparable to those of coated papers printed using penetration drying type inks; as well as processes for preparing them. Herein disclosed is a coated printing paper for newsprint inks comprising a coating layer containing a pigment and an adhesive on a base paper, characterized in that the coating layer on the base paper has a coat weight of 4.0 g/m2 or more per side and that the coated paper has an oil absorbency under pressure of 20 g/m2 or more and a Bekk smoothness of 75 seconds or less; as well as a process for preparing the paper.Type: ApplicationFiled: December 27, 2004Publication date: October 18, 2007Inventors: Hiroshi Koyamoto, Koji Okomori, Masahito Suzuki, Hirokazu Morii
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Patent number: 7160419Abstract: A coated paper for printing comprising a base paper and a coating layer containing a pigment and an adhesive, wherein the coating layer has a volume distribution of 65% or more of pigment particles ranging from 0.4 ?m to 4.2 ?m in size, and wherein the coated paper has a basis weight of 50 ?g/m2 or less and tensile stiffness ranging between 200 kN/m and 400 kN/m, inclusive.Type: GrantFiled: March 27, 2003Date of Patent: January 9, 2007Assignee: Nippon Paper Industries Co., Ltd.Inventors: Masahito Suzuki, Koji Okomori, Masato Yamaguchi, Hirokazu Morii
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Publication number: 20060137841Abstract: The present invention aims to provide coated printing papers having fast ink drying properties comparable to those of conventional newsprint, without stickiness, having good printability such as sharpness of printed images comparable to those of coated papers, as well as having the effect of decomposing harmful substances by exposure to light, especially when using penetration drying type news inks. A coated printing paper is provided, comprising a coating layer containing a pigment and an adhesive on a base paper, characterized in that a fine titanium oxide powder having a photocatalytic effect is contained in the coating layer and that the coated paper has an oil absorbency of 20 g/m2 or more under pressure and a Bekk smoothness of 75 seconds or less.Type: ApplicationFiled: December 1, 2005Publication date: June 29, 2006Inventors: Akinobu Chatani, Koji Okomori, Hiroshi Koyamoto, Hitoshi Nagao, Hirokazu Morii
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Publication number: 20060099400Abstract: The present invention relates to rotogravure coated papers and provides rotogravure coated papers having good operability, low density, high gloss and good printability. Disclosed are rotogravure coated papers comprising a coating layer containing a pigment and an adhesive on a base paper, wherein the coating layer contains an inorganic pigment having a volume-based distribution in which 65% or more of particles are in the particle diameter range of 0.4-4.2 ?m and a hollow sphere synthetic pigment having a mean particle diameter of 0.1-0.6 ?m.Type: ApplicationFiled: September 11, 2003Publication date: May 11, 2006Inventors: Koji Okomori, Masato Yamaguchi, Kazuaki Minehata, Hirokazu Morii
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Publication number: 20060005933Abstract: A coated sheet for web offset printing comprising a base paper with a pigment coating layer formed on it, and a surface layer—preferably containing surface-sizing agents and plastic pigments—formed on the pigment coating layer; wherein the air permeability of the sheet before printing is less than 80,000 seconds and the air permeability in a non-image area after printing decreases by 8,000 seconds or more from the level before printing. The coated sheet for web offset printing obtained by the present invention suppresses wrinkling during web offset printing or in the subsequent drying process and also offers excellent blister resistance and other properties.Type: ApplicationFiled: September 27, 2002Publication date: January 12, 2006Applicant: Nippon Paper Industries Co., Ltd.Inventors: Koji Okomori, Chizuru Wakai, Hirokazu Morii
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Patent number: 6929845Abstract: A coated paper for gravure printing that offers good gravure printability resulting from reduced missing dots while at the same time achieving high sheet gloss, wherein the paper comprises a base paper and a coating layer containing a pigment and an adhesive. This paper also contains a compound having an effect of inhibiting the binding between pulp fibers, wherein the compound, when added to 0.3 weight-part per 100 parts of bone-dry pulp, will reduce the tensile strength of the paper by five % to 40% (as measured in accordance with JIS P 8133).Type: GrantFiled: September 27, 2001Date of Patent: August 16, 2005Assignee: Nippon Paper Industries Co., Ltd.Inventors: Hidehiko Kai, Koji Okomori, Chizuru Wakai, Hirokazu Morii, Hideki Fujiwara
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Publication number: 20050089651Abstract: The present invention provides a method for producing coated papers for printing having good coating ruunability during film transfer coating, good print gloss and ink density and excellent printability, and also provides the resulting coated papers. Disclosed is a method for producing a coated paper for offset printing or gravure printing by applying a coating color containing a pigment and an adhesive on a base paper, wherein the coating color containing 0.1 parts by weight or more and less than 2.0 parts by weight of polyvinyl alcohol (PVA) per 100 parts by weight of the pigment is applied by the film transfer method and preferably the coating weight per side is 7 g/m2 or more. For coated papers for web offset printing, the coating color contains less than 2.0 parts by weight of a starch as an adhesive.Type: ApplicationFiled: January 16, 2003Publication date: April 28, 2005Inventors: Koji Okomori, Masato Yamaguchi, Masahito Suzuki, Hirokazu Morii
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Publication number: 20040261963Abstract: A coated paper for printing comprising a base paper and a coating layer containing a pigment and an adhesive, wherein the coating layer has a volume distribution of 65% or more of pigment particles ranging from 0.4 &mgr;m to 4.2 &mgr;m in size, and wherein the coated paper has a basis weight of 50 g/m2 or less and tensile strength ranging between 200 kN/m and 400 kN/m, inclusive.Type: ApplicationFiled: March 27, 2003Publication date: December 30, 2004Inventors: Masahito Suzuki, Koji Okomori, Masato Yamaguchi, Hirokazu Morii
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Publication number: 20040048087Abstract: A coated paper for gravure printing that offers good gravure printability resulting from reduced missing dots while at the same time achieving high sheet gloss, wherein the paper comprises a base paper and a coating layer containing a pigment and an adhesive. This paper also contains a compound having an effect of inhibiting the binding between pulp fibers, wherein the compound, when added to 0.3 weight-part per 100 parts of bone-dry pulp, will reduce the tensile strength of the paper by five % to 40% (as measured in accordance with JIS P 8133).Type: ApplicationFiled: September 22, 2003Publication date: March 11, 2004Inventors: Hidehiko Kai, Koji Okomori, Chizuru Wakai, Hirokazu Morii, Hideki Fujiwara