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:
May. 04, 1993
Filed:
Aug. 26, 1991
Takashi Watanabe, Yokohama, JP;
Kazuaki Masuda, Sagamihara, JP;
Akira Goto, Yokohama, JP;
Hiroshi Kono, Yokohama, JP;
Takashi Kanzaki, Yokohama, JP;
Toshio Kashino, Chigasaki, JP;
Akio Saito, Hadano, JP;
Koyo Midorikawa, Tokyo, JP;
Toru Okumura, Yokohama, JP;
Masami Ikeda, Tokyo, JP;
Nobuyuki Kuwabara, Tokyo, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
The present invention relates to a method for manufacturing an ink jet recording head having an ink path communicated with a discharge opening, a discharge energy generating element disposed in the ink path and a discharge opening plate on which the discharge opening is formed. The discharge opening plate is attached to an end surface of the ink path. The discharge opening is formed by irradiating an excimer laser light on the discharge opening plate from a side of the plate which is attached to the ink path.