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:
Nov. 02, 2004
Filed:
May. 08, 2003
Kazuyoshi Tominaga, Chiba, JP;
Osamu Koseki, Chiba, JP;
Kentaro Suzuki, Chiba, JP;
Yuji Nakamura, Chiba, JP;
Yasuhito Sekiya, Chiba, JP;
Jun Tsuneyoshi, Chiba, JP;
Tomiharu Makishima, Chiba, JP;
Masaki Denda, Chiba, JP;
SII Printek Inc., Chiba, JP;
Abstract
To provide an ink jet head and an ink jet recording apparatus in which it is possible to reliably prevent ink bubbles from staying in the ink sump and the interior of the head chip and in which it is relatively easy to remove the bubbles. The ink jet head includes: a plurality of grooves arranged side by side so as to communicate with nozzle openings; an ink chamber for supplying ink to each of the grooves; an ink sump provided so as to communicate with the ink chamber; and ink storage unit ( ) communicating with the ink sump through ink supply passages, in which there is provided an air duct ( ) establishing communication between a region in the ink sump which is substantially free from interference with an ink flow from the ink supply passages ( ) to the ink chamber and in which bubbles easily gather and an air region of the ink storage unit ( ). Therefore, the bubbles in the ink can be surely removed.