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:
Nov. 25, 1997
Filed:
Jan. 17, 1996
Applicant:
Inventors:
Yukari Sano, Suwa, JP;
Junko Takatsuna, Suwa, JP;
Kazuaki Watanabe, Suwa, JP;
Kiyohiko Takemoto, Suwa, JP;
Assignee:
Seiko Epson Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09D / ;
U.S. Cl.
CPC ...
106 3175 ; 106 316 ;
Abstract
An ink composition is provided which, when used for ink jet recording, does not clog a recording head and provides a high-quality print and, at the same time, has high storage stability. The ink composition comprises a pigment, a dispersant, and water, the dispersant being a polymeric dispersant having a carboxyl group, the ink composition further comprising a hydroxide of an alkali metal and an alcoholamine having at least one hydroxyl group.