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. 06, 2004
Filed:
Aug. 31, 2000
Takahiro Naka, Nagano, JP;
Hiroaki Tojyo, Nagano, JP;
Toshihisa Saruta, Nagano, JP;
Satoshi Shinada, Nagano, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
An ink cartridge placed in an ink jet printer stores cartridge management data containing “ink capacity”, “ink total consumption amount”, and “cartridge identification information”. A host stores host management data containing “ink total consumption amount” and cartridge identification information for each cartridge. The host collates the cartridge management data read by the printer with the host management data stored in the host and determines the precise “ink total consumption amount.” After print processing terminates, the printer calculates the amount of ink consumed in the print (ink consumption amount) and the host updates the “ink total consumption amount” based on the calculated ink consumption amount. The printer updates the “ink total consumption amount” recorded in the cartridge management data to the “ink total consumption amount” updated by the host.