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. 14, 2020
Filed:
Dec. 19, 2017
Canon Kabushiki Kaisha, Tokyo, JP;
Kousuke Yamasaki, Kawasaki, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An aqueous ink for ink jet recording contains a pigment and a urethane resin. The urethane resin includes units respectively derived from a polyisocyanate, a polyol having no acid group, a polyol having acid group and a primary monoalcohol, has an acid value of 20 mgKOH/g or less based on the unit present at a molecular terminal of the urethane resin and derived from the polyol having acid group and a rate (mol %) of the urethane bond formed by the units derived from the polyisocyanate and the primary monoalcohol accounting for the total of the urethane bond and the urea bond in the urethane resin of 5 mol % or more to 20 mol % or less.