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:
Aug. 31, 2010
Filed:
Dec. 14, 2007
Hisashi Miyazawa, Nagano, JP;
Yasuto Sakai, Nagano, JP;
Satoshi Shinada, Nagano, JP;
Atsushi Kobayashi, Nagano, JP;
Hisashi Miyazawa, Nagano, JP;
Yasuto Sakai, Nagano, JP;
Satoshi Shinada, Nagano, JP;
Atsushi Kobayashi, Nagano, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
An ink cartridge for an ink jet recording device, includes: a container having an ink supply port; at least two ink chambers partitioned in the container, one being located substantially in an upper section and the other being located substantially in a lower section; an ink suction passage connecting a bottom region of the lower section ink chamber to a bottom region of the upper section ink chamber; and a negative pressure generating mechanism provided to a flow passage connecting the upper section ink chamber to the ink supply port.