The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 06, 2010
Filed:
Jun. 24, 2004
Hiroshi Ono, Tokyo, JP;
Satoshi Ishioka, Tokyo, JP;
Fuminari Nonomura, Tokyo, JP;
Yasunori Nanri, Tokyo, JP;
Hiroshi Ono, Tokyo, JP;
Satoshi Ishioka, Tokyo, JP;
Fuminari Nonomura, Tokyo, JP;
Yasunori Nanri, Tokyo, JP;
Nippon Paper Industries Co., Ltd., Tokyo, JP;
Abstract
Newsprint for offset printing having sufficient water absorption resistance to provide a clear printing image with less color registration problems upon offset printing is manufactured by coating base paper, to which aluminum sulfate (a 50% by weight AlO.14HO product) is added at a ratio of less than 3.0% by weight upon paper making, with a surface treating agent mainly comprised of (A) a water-soluble macromolecular substance selected from starches, PVAs, polyacrylamides, and cellulose derivatives, (B) a copolymer obtained by the copolymerization of a styrene monomer and a cationic monomer, a water-soluble copolymer obtained by the copolymerization of a styrene monomer, a cat ionic monomer and a hydrophobic monomer, or a water-soluble copolymer obtained by treating one of these copolymers in which a tertiary amine-containing vinyl monomer is used as a cationic monomer, with a quaternizing agent.