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. 04, 2008
Filed:
Jan. 31, 2006
Applicants:
Yoshihide Aikawa, Yokohama, JP;
Kuniaki Fujimoto, Tokyo, JP;
Sadayuki Sugama, Tsukuba, JP;
Inventors:
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01D 11/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention aims to provide an ink tank which can elongate the lifetime of ink jet recording apparatus and further stores therein an ink which can achieve superior image characteristics such as image fastness. The present invention provides an ink tank which includes an ink storage portion storing an aqueous ink therein, having fine channels which retain the aqueous ink by capillary force, wherein the aqueous ink includes at least water and a water-soluble coloring material, and further includes a compound satisfying specific requirements.