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:
Jul. 28, 1998
Filed:
Jul. 22, 1994
Akihiro Yamanaka, Yokohama, JP;
Takashi Watanabe, Yokohama, JP;
Hiroyuki Ishinaga, Tokyo, JP;
Takahisa Kawamura, Yokohama, JP;
Seiichiro Karita, Yokohama, JP;
Norio Ohkuma, Yokohama, JP;
Masahiko Higuma, Togane, JP;
Akira Goto, Yokohama, JP;
Teruo Arashima, Kawasaki, JP;
Motoaki Sato, Tokyo, JP;
Megumi Saito, Kawasaki, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An ink-jet recording head has ejection outlets formed by treating a face of a plate for the ejection outlets with a water-repellent and irradiating the plate with a laser beam from the backside of the plate. The head is provided with a sealing member for sealing the ejection outlets. The water-repellent has a hardness of higher than the pencil hardness 6B at room temperature. A decomposition product layer is formed on the layer of the water repellent at peripheral portions of the ejection outlets.