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. 06, 2010
Filed:
Sep. 30, 2004
Yasuhiro Oki, Nagano, JP;
Kazuhiko Kitamura, Nagano, JP;
Hiroko Hayashi, Nagano, JP;
Keiichi Tateishi, Kanagawa, JP;
Shigeaki Tanaka, Kanagawa, JP;
Yoshiharu Yabuki, Kanagawa, JP;
Yasuhiro Oki, Nagano, JP;
Kazuhiko Kitamura, Nagano, JP;
Hiroko Hayashi, Nagano, JP;
Keiichi Tateishi, Kanagawa, JP;
Shigeaki Tanaka, Kanagawa, JP;
Yoshiharu Yabuki, Kanagawa, JP;
Seiko Epson Corporation, Tokyo, JP;
Fuji Film Corporation, Kanagawa, JP;
Abstract
An ink composition including at least water, a cyan dye represented by the formula shown below and an aromatic compound having a carboxyl group and/or a salt thereof; an inkjet recording method using the composition; and recorded matter which is recorded by the recording method wherein M represents a hydrogen atom, a metal element, a metal oxide, a metal hydroxide or a metal halide, Rto Reach independently represents —SOZ, and Z represents a substituted or unsubstituted alkyl group, a substituted or unsubstituted cycloalkyl group, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted aralkyl group, a substituted or unsubstituted aryl group or a substituted or unsubstituted heterocyclic group, provided that at least one of four Z's has an ionic hydrophilic group as a substituent.