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.

Date of Patent:
Mar. 24, 2009

Filed:

Jul. 20, 2005
Applicants:

Takashi Ozawa, Shizuoka, JP;

Keiichi Tateishi, Kanagawa, JP;

Toru Harada, Kanagawa, JP;

Inventors:

Takashi Ozawa, Shizuoka, JP;

Keiichi Tateishi, Kanagawa, JP;

Toru Harada, Kanagawa, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09D 11/00 (2006.01); C09D 11/02 (2006.01); B41J 2/01 (2006.01);
U.S. Cl.
CPC ...
Abstract

A novel ink composition, which has an absorption characteristic excellent in color reproducibility as a yellow color of one of the three primary colors, which has enough fastness against light, heat and humidity, and which does not cause bronze phenomenon, is provided. The ink composition contains water, a yellow dye having an oxidation potential nobler than 1.0 V, and an aromatic compound, aliphatic compound and/or a salt thereof having at least one of carboxyl group, sulfo group and phosphoric acid group.


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