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:
Nov. 03, 2015
Filed:
Feb. 21, 2013
Canon Kabushiki Kaisha, Tokyo, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A method for manufacturing a liquid ejection head includes the following processes in the following order: forming a first metal layer containing a first metal material on an insulating layer of a base on which a plurality of thermal energy generating elements and the insulating layer are laminated in this order; forming a second metal layer containing a second metal material on the first metal layer, and then patterning the second metal layer to form a plurality of protective portions; patterning the first metal layer to form a connection portion for electrically connecting the plurality of protective portions; inspecting the conduction of the connection portion and the plurality of energy generating elements; and patterning the connection portion to thereby electrically isolate the plurality of protective portions and form a plurality of close contact portions which are electrically isolated from each other.