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:
Apr. 24, 2001
Filed:
Aug. 28, 1997
Akihiro Yamanaka, Kawasaki, JP;
Kazuaki Masuda, Kawasaki, JP;
Hajime Yamamoto, Yokohama, JP;
Eiichiro Shimizu, Urawa, JP;
Yasuo Kotaki, Yokohama, JP;
Teruo Arashima, Kawasaki, JP;
Jun Hinami, Kawasaki, JP;
Wataru Takahashi, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
The present invention provides an ink jet recording head comprising a top plate in which two groups of ink passage grooves for forming ink passages, two ink chamber frames, ink introduction passages, two rows of ink discharge ports are formed, two substrates on which a plurality of resistive heat generating elements for discharging ink are formed in correspondence to the two rows of ink discharge ports, and two elastic members for contacting under pressure and securing the substrates and the top plate for each said substrate, and wherein the junction between the substrates and the top plate forms the ink passages and the ink chambers therebetween, and further wherein a groove for isolating the ink discharge port rows from each other is formed between the ink discharge port rows and a depth of the groove is greater than depths of the ink discharge ports and the ink passages.