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. 05, 2000
Filed:
Nov. 23, 1994
Masashi Kitani, Yokohama, JP;
Hiroshi Sugitani, Machida, JP;
Yasuro Kashima, Fukushima, JP;
Masanori Takenouchi, Yokohama, JP;
Tadanobu Nagami, Machida, JP;
Kunihiko Maeoka, Kawasaki, JP;
Nobuyuki Sato, Yokohama, JP;
Hajime Yamamoto, Yokohama, JP;
Susumu Ito, Yokohama, JP;
Minoru Nozawa, Yokohama, JP;
Akira Tsujimoto, Yokohama, JP;
Seiichiro Karita, Yokohama, JP;
Masashi Miyagawa, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An ink jet head for performing recording by discharging inks comprises an element substrate provided with a plurality of discharge energy generating elements for discharging the inks and a grooved member integrally having discharge ports, a plurality of grooves constituting ink flow passages provided corresponding to the discharge energy generating elements, a plurality of recess portions constituting a plurality of liquid chambers for supplying the inks to a plurality of ink flow passages, and separation grooves provided between the plurality of recess portions to separate between the recess portions constituting the liquid chambers. The element substrate and the groove member being jointed together. The liquid chambers are separated by the separation grooves for preventing the inks from flowing between the liquid chambers.