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:
Apr. 01, 2003
Filed:
Oct. 25, 1999
Applicant:
Inventors:
Mikio Sanada, Yokohama, JP;
Yoshifumi Hattori, Yamato, JP;
Masanori Takenouchi, Yokohama, JP;
Osamu Morita, Yokosuka, JP;
Shinya Mishina, Kawasaki, JP;
Hiroshi Koshikawa, Kawasaki, JP;
Kenji Kitabatake, Kawasaki, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B41J 2/195 ;
U.S. Cl.
CPC ...
B41J 2/195 ;
Abstract
Ink tank which enables accurate detection of existence/absence of liquid even if a storage containing liquid such as ink is stored under a severe environment, and a cartridge including the ink tank, as well as a printing apparatus utilizing the cartridge. A low surface energy processing agent including alkyl polysiloxane and alcohol is coated on prism provided on the bottom portion of ink tank , thereby performing low surface energy processing on the prism