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:
Aug. 13, 2013
Filed:
Apr. 08, 2009
Tetsuo Hosoya, Ibaraki-ken, JP;
Hiroshi Hayashi, Ibaraki-ken, JP;
Yoshifumi Watanabe, Ibaraki-ken, JP;
Kazuyuki Ando, Ibaraki-ken, JP;
Marie Morinaga, Ibaraki-ken, JP;
Tetsuo Hosoya, Ibaraki-ken, JP;
Hiroshi Hayashi, Ibaraki-ken, JP;
Yoshifumi Watanabe, Ibaraki-ken, JP;
Kazuyuki Ando, Ibaraki-ken, JP;
Marie Morinaga, Ibaraki-ken, JP;
Riso Kagaku Corporation, Tokyo, JP;
Abstract
A non-aqueous pigment ink comprising a pigment, a non-aqueous solvent, and non-aqueous resin dispersion microparticles having a pigment dispersion capability, wherein the non-aqueous resin dispersion microparticles are an acrylic polymer comprising an alkyl (meth)acrylate unit having an alkyl group of 12 or more carbon atoms and a (meth)acrylate unit having a urethane group. The acrylic polymer is a copolymer of a monomer mixture comprising an alkyl (meth)acrylate (A) having an alkyl group of 12 or more carbon atoms and a reactive (meth)acrylate (B) having a functional group capable of reacting with an amino group, wherein the urethane group is introduced by a reaction between the functional group capable of reacting with an amino group, an amino alcohol and a polyvalent isocyanate compound, and the mass ratio within the acrylic polymer between the copolymer portion and the introduced urethane group portions is within a range from 60:40 to 99:1.