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. 03, 2004
Filed:
Aug. 06, 2002
Ichiro Saito, Kanagawa-ken, JP;
Yoshiyuki Imanaka, Kanagawa-ken, JP;
Teruo Ozaki, Kanagawa-ken, JP;
Toshimori Miyakoshi, Kanagawa-ken, JP;
Muga Mochizuki, Kanagawa-ken, JP;
Masahiko Ogawa, Tokyo, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A substrate for use of an ink jet recording head is provided with a plurality of heat generating members for generating thermal energy to be utilized for discharging ink. The heat generating members are structured by thin film formed by material represented by Ta Si R , which has specific resistance value of 4000 &mgr;&OHgr;·cm or less, where R is one or more kinds of elements selected from among C, O, N, and x+y+z=100. With the structure thus arranged, the heat generating members make it possible to maintain the change of resistance values within a small amount even when used continuously for a long time, and provide recorded images in high quality with long life and reliability.