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:
Mar. 12, 2013
Filed:
Nov. 20, 2009
Atsushi Hiraishi, Wakayama, JP;
Masayuki Narita, Wakayama, JP;
Takahiro Sato, Wakayama, JP;
Kyoichi Shirota, Wakayama, JP;
Yasuhiro Doi, Wakayama, JP;
Hiroyuki Yoshida, Wakayama, JP;
Yusuke Shimizu, Wakayama, JP;
Atsushi Hiraishi, Wakayama, JP;
Masayuki Narita, Wakayama, JP;
Takahiro Sato, Wakayama, JP;
Kyoichi Shirota, Wakayama, JP;
Yasuhiro Doi, Wakayama, JP;
Hiroyuki Yoshida, Wakayama, JP;
Yusuke Shimizu, Wakayama, JP;
KAO Corporation, Tokyo, JP;
Abstract
The present invention provides [1] a water dispersion for ink-jet printing containing chain-like particles each containing anionic organic pigment particles and a cationic polymer, wherein the ratio of organic pigment primary particles forming the chain-like particles to all the pigment primary particles contained in the water dispersion is 10% by number or more; [2] a water-based ink for ink-jet printing containing the water dispersion; [3] a method for producing a water dispersion for ink-jet printing as described above in [1]; and [4] a water-based ink for ink-jet printing containing a water dispersion produced through the method. The water dispersion and water-based ink for ink-jet printing of the present invention realize excellent optical density.