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:
May. 18, 2010
Filed:
Jun. 27, 2006
Setsuji Tatsumi, Kanagawa, JP;
Yasuhiko Kachi, Kanagawa, JP;
Yoshihiro Ito, Saitama, JP;
Satoru Okamoto, Saitama, JP;
Setsuji Tatsumi, Kanagawa, JP;
Yasuhiko Kachi, Kanagawa, JP;
Yoshihiro Ito, Saitama, JP;
Satoru Okamoto, Saitama, JP;
Fujifilm Corporation, Tokyo, JP;
Abstract
An ink cartridge is partitioned into a negative pressure generator chamber containing a negative pressure generator and a storage chamber containing an ink bag. The ink bag stores ink and supplies the ink to the negative pressure generator chamber through an ink port. The negative pressure generator absorbs and holds the ink by its capillary force, to keep pressure inside nozzles of a recording head negative to atmospheric pressure. Through a first air introduction hole, the air is introduced into the negative pressure generator chamber as the ink in the negative pressure generator chamber decreases. Through a second air introduction hole, the air is introduced into the storage chamber as the ink in the ink bag decreases. So variations in pressure inside the nozzles are suppressed, which makes ink discharge from the nozzles stable.