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:
Dec. 10, 2002
Filed:
Jul. 27, 2001
Yoichi Taneya, Kanagawa, JP;
Hiroyuki Ishinaga, Tokyo, JP;
Yoshinori Misumi, Tokyo, JP;
Hiroyuki Sugiyama, Kanagawa, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
Disclosed is a liquid discharge head that comprises: a heat generator that generates a thermal energy for generating a bubble in a liquid; a discharge part as a portion to discharge the liquid; a flow path communicating with the discharge part and having a bubble generation region in which the bubble is generated; a movable member having a free end and is displaced with the growth of the bubble; and a restricting portion to define a displacement amount of the movable member, in which the flow path is formed by joining a substantially flat substrate provided with the heat generator the movable member and a top plate opposing to the substrate and including the restricting portion, and the liquid is discharged from the discharge part by an energy during generation of the bubble, in which the clearance between at least one sidewall of the flow path and the side edge portion of the restricting portion is larger than the clearance between the sidewall and the side edge portion of the movable member.