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:
Sep. 11, 2007
Filed:
Jun. 20, 2003
Toshihisa Saruta, Matsumoto, JP;
Toshihisa Saruta, Matsumoto, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A printer has a sequential access EEPROM used with storage elements on black and color ink cartridges. Cartridge data such as data concerning inks in the cartridges are stored in the cartridges' storage elements. The addressing format for the cartridges' storage elements differs from that for the EEPROM. The printer's controller converts the storage format of addressing before writing information into the cartridges' storage elements. Data to be written into storage elements are temporarily placed in a RAM on the printer's carriage. The data are then written into storage elements of the black and color cartridges, say, during power-off operation. Signal lines and memory used when writing data into storage elements are identical to signal lines through which print data are transmitted to a print head on the carriage, and the memory where print data are stored. This reduces ink cartridge manufacturing cost and printer size.