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:
Oct. 05, 2004
Filed:
Sep. 09, 2002
Tadayoshi Inamoto, Tokyo, JP;
Haruhiko Terai, Kanagawa, JP;
Hiroyuki Yamamoto, Kanagawa, JP;
Yoshiaki Kurihara, Kanagawa, JP;
Kenji Yabe, Kanagawa, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
The present invention provides a liquid discharge recording head comprising a substrate on which an energy generating element for generating liquid discharging energy is provided, and an orifice plate which is laminated with the substrate and in which a discharge port corresponding to the energy generating element is provided, and wherein a liquid droplet is discharged in a direction substantially perpendicular to surfaces of the substrate and the orifice plate, and further wherein a flow path is formed between the substrate and the orifice plate, a groove encircling the flow path is formed in the orifice plate, and edge portions of the orifice plate contacted with the groove are formed as saw-shaped portions having a number of minute indentations.