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:
Dec. 02, 2003
Filed:
Jan. 13, 2003
Applicant:
Inventors:
Hiroshi Koshikawa, Kanagawa, JP;
Masanori Takenouchi, Kanagawa, JP;
Shozo Hattori, Tokyo, JP;
Hajime Yamamoto, Tokyo, JP;
Eiichiro Shimizu, Kanagawa, JP;
Fumitaka Goto, Kanagawa, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B65D 6/40 ;
U.S. Cl.
CPC ...
B65D 6/40 ;
Abstract
An ink tank producing a stable negative pressure regardless of material used is provided. In the ink tank, inner and outer walls include a bonding region having a bonding force distribution. With this arrangement, since the inner wall separates from the outer wall as ink in the ink tank is being guided out, the area of a non-bonding region increases.