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:
Jan. 26, 2016
Filed:
Mar. 19, 2012
Daiji Okamura, Tokyo, JP;
Kousuke Yamasaki, Kawasaki, JP;
Kenji Moribe, Fujisawa, JP;
Kouichirou Okumura, Kawasaki, JP;
Kenichi Shiiba, Warabi, JP;
Hiromitsu Kishi, Kawasaki, JP;
Daiji Okamura, Tokyo, JP;
Kousuke Yamasaki, Kawasaki, JP;
Kenji Moribe, Fujisawa, JP;
Kouichirou Okumura, Kawasaki, JP;
Kenichi Shiiba, Warabi, JP;
Hiromitsu Kishi, Kawasaki, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An ink jet ink contains a polyurethane polymer and a self-dispersing pigment. The polyurethane polymer has units derived from a polyisocyanate, a polyol having no acid group, and a diol having an acid group. The molar ratio of the percentage of the urethane bond in the polyurethane polymer to the percentage of the urea bond in the polyurethane polymer is 85.0/15.0 or more and 100.0/0 or less. The ink jet ink may be capable of producing an image having high optical density, scratch resistance, and highlighter resistance, and which has excellent ink ejection stability and can reduce image deflection caused by face wetting.