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:
Jan. 13, 2004
Filed:
Jan. 09, 2002
Applicant:
Inventors:
Assignee:
Seiko Epson Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B41J 2/175 ; B41J 2/195 ;
U.S. Cl.
CPC ...
B41J 2/175 ; B41J 2/195 ;
Abstract
An ink cartridge for supplying ink to a recording head is detachably mounted on a cartridge holder. A calculator performs calculation of an ink amount consumed by the recording head. A counter updates a residual ink amount in the mounted ink cartridge based on the consumed ink amount calculated by the calculator. A monitor monitors an ink amount contained in the mounted ink cartridge to judge at least an ink-end state in which the ink amount in the ink cartridge is a predetermined amount or less. A corrector corrects the way of calculation in the calculator based on the residual ink amount indicated by the counter, when the monitor judges that the mounted ink cartridge is in the ink-end state.