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. 05, 2011
Filed:
Aug. 02, 2006
Applicants:
Kenji Tsukada, Nagano-Ken, JP;
Munehide Kanaya, Nagano-Ken, JP;
Inventors:
Kenji Tsukada, Nagano-Ken, JP;
Munehide Kanaya, Nagano-Ken, JP;
Assignee:
Seiko Epson Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B41J 2/195 (2006.01); B41J 29/393 (2006.01); B41J 2/045 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present method detects an ink consumption condition in an ink cartridge loaded on an ink jet recording apparatus having a recording head for jetting ink drops, using a piezo-electric device mounted on the cartridge. The method detects the ink consumption condition using the piezo-electric device when the recording head is in a non-recording state. A complicated seal structure is not necessary and the ink residue can be detected surely.