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:
Jul. 17, 2012
Filed:
Sep. 02, 2010
Applicants:
Tomohiro Yamashita, Yokohama, JP;
Shin-ichi Hakamada, Kawasaki, JP;
Inventors:
Tomohiro Yamashita, Yokohama, JP;
Shin-ichi Hakamada, Kawasaki, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41J 2/05 (2006.01);
U.S. Cl.
CPC ...
Abstract
A liquid composition used in combination with an ink containing a coloring material is ejected by the action of thermal energy from a recording head including a heating resistor having a protecting layer that contains at least one of a metal and a metal oxide and that is to come into contact with the liquid composition. The liquid composition contains an organic acid having a carboxy group, an alkali metal ion, an organic acid having a sulfonate group, a polyvalent metal ion, and water.