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:
Sep. 23, 2014
Filed:
Sep. 30, 2010
Satoshi Shioda, Tokyo-to, JP;
Tatsuro Ishitobi, Tokyo-to, JP;
Takao Otomaru, Tokyo-to, JP;
Rumiko Matsuo, Tokyo-to, JP;
Masaki Inumaru, Tokyo-to, JP;
Yukio Sugita, Tokyo-to, JP;
Fumie Yamazaki, Tokyo-to, JP;
Naoki Shiraishi, Tokyo-to, JP;
Mitsuyoshi Tamura, Tokyo-to, JP;
Ataru Miyata, Niigataken, JP;
Satoshi Shioda, Tokyo-to, JP;
Tatsuro Ishitobi, Tokyo-to, JP;
Takao Otomaru, Tokyo-to, JP;
Rumiko Matsuo, Tokyo-to, JP;
Eiichi Miyata, Tokyo-to, JP;
Masaki Inumaru, Tokyo-to, JP;
Yukio Sugita, Tokyo-to, JP;
Fumie Yamazaki, Tokyo-to, JP;
Naoki Shiraishi, Tokyo-to, JP;
Mitsuyoshi Tamura, Tokyo-to, JP;
DNP Fine Chemicals Co., Ltd., Yokohama-shi, Kanagawa, JP;
Abstract
Disclosed is an ink composition which has superior storage stability, is resistant to bleeding, has good fixability to paper, and enables printing of a clear image. The ink composition includes a pigment dispersion containing a surface-treated pigment and a resin emulsion, wherein the surface-treated pigment is obtained by binding a functional group, having a larger calcium index than a calcium index of 1,2,3-benzenetricarboxylic acid, to the surface of a pigment; and the resin emulsion is adapted so that an aqueous solution containing 1 mass % of a solid content of the resin emulsion has a conductance of 300 μS/cm or less.