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:
Dec. 09, 2003
Filed:
May. 23, 2001
Kazuyuki Oda, Ebina, JP;
Koji Ikegami, Ebina, JP;
Tomoki Umezawa, Ebina, JP;
Ichiro Tomikawa, Ebina, JP;
Masaki Kataoka, Ebina, JP;
Kenji Yamazaki, Ebina, JP;
Norikuni Funatsu, Ebina, JP;
Yoshihisa Ueda, Ebina, JP;
Kohzo Hara, Ebina, JP;
Takayuki Takeuchi, Ebina, JP;
Kunihito Satou, Ebina, JP;
Toshinobu Hamazaki, Ebina, JP;
Koichi Saitoh, Ebina, JP;
Fuji Xerox Co., Ltd., Tokyo, JP;
Abstract
The present invention provides an inkjet recording head cartridge and an inkjet recording apparatus that have a simple structure and high reliability. Since individual flow passages in which ink emission orifices are formed are communicated directly with a rectangular ink supply chamber, it is prevented that a bubble of such a size as to cause printing defects rises through an ink supply chamber and blocks the individual flow passages. Also, since ink heated within the ink supply chamber is moved upward to the ink tank chamber by convection and grows an air lump sealed beforehand, it is prevented that a bubble will grow in the ink supply chamber. Furthermore, by allocating a large cross-sectional area to the ink supply chamber, it is prevented that meniscus oscillation of the ink emission orifices is amplified by pressure oscillation caused by ink emission and causes a printing defect. Therefore, reliable printing can be performed with a simple construction.