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:
Jul. 17, 2012
Filed:
Aug. 05, 2009
Kiyoshi Morimoto, Kanagawa, JP;
Keiichi Tateishi, Kanagawa, JP;
Kiyoshi Morimoto, Kanagawa, JP;
Keiichi Tateishi, Kanagawa, JP;
FUJIFILM Corporation, Tokyo, JP;
Abstract
The invention provides a water-based ink composition for inkjet recording which contains vinyl polymer particles containing a styrene-acrylic acid copolymer in which the total content of the constitutional units derived from styrene monomer, acrylic acid, and methacrylic acid is 45% by mass or more; and at least one of an azo pigment represented by Formula (1), a tautomer thereof, a salt or hydrate thereof; and a water-based liquid medium, and which is excellent in discharge stability after a long-term storage or after aging at high temperatures: wherein, Q represents a heterocyclic group; W represents an alkoxy group, an amino group etc.; Xand Xeach independently represent a hydrogen atom, an alkyl group etc.; Rrepresents a hydrogen atom or a substituent; Rrepresents a heterocyclic group; and n represents an integer of 1 to 4.