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:
Feb. 24, 2015
Filed:
Sep. 21, 2010
Masashi Ikeda, Koganei, JP;
Hisashi Mori, Hino, JP;
Masashi Ikeda, Koganei, JP;
Hisashi Mori, Hino, JP;
Abstract
Disclosed is an aqueous ink for inkjet that contains water, pigment, organic or inorganic acid (A) and ammonia or amines (B) or ammonium salts of organic or inorganic acids, a resin having anionic groups (C), and an amphoteric resin having both anionic and cationic groups (D). The aqueous ink for inkjet is characterized by fulfilling the relationship pKa(A)<pKa(C)<7 when pKa(A) is the pKa of the organic or inorganic acid (A) and pKa(C) is the pKa of said resin having anionic groups (C). By means of the aqueous ink for inkjet and the inkjet recording method, the occurrence of bleeding during high-speed printing can be reduced, and a high detail image quality can be obtained.