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:
Feb. 13, 2007
Filed:
Mar. 11, 2004
Osamu Ishibashi, Nagano-ken, JP;
Kazuhiro Ichikawa, Nagano-ken, JP;
Osamu Ishibashi, Nagano-ken, JP;
Kazuhiro Ichikawa, Nagano-ken, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
Toner cartridgesC,M,Y, andK have storage elementsC,M,Y, andK mounted thereon to transmit information carried on electromagnetic wave in a predetermined frequency band. An information receiver transmitter unitis located in a neighborhood of an end of a developer unitwith the toner cartridgesC,M,Y, andK attached thereto to transmit information carried on the electromagnetic wave in the predetermined frequency band to and from a color laser printer. While the developer unitis rotated to develop each color component image with a supply of toner from the corresponding one of the toner cartridgesC,M,Y, andK, the information receiver transmitter unitis controlled to write a cumulative toner consumption and a cumulative number of printed sheets into the corresponding one of the storage elementsC,M,Y, andK.