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:
Apr. 18, 2017
Filed:
Nov. 30, 2015
Canon Kabushiki Kaisha, Tokyo, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A method for manufacturing a liquid discharge head that includes a discharge-port-forming member, which has discharge ports through which a liquid is discharged, and a pressure-chamber-forming member, which includes pressure chambers communicating with the discharge ports and each including a heating resistor formed in a bottom portion thereof and which has a surface joined to the discharge-port-forming member, includes preparing the pressure-chamber-forming member in which wiring layers each including a barrier metal as a base member are formed, forming the pressure chambers, whose depths from the surface are different from each other and which include the heating resistors each formed of one of the barrier metals, by recessing the pressure-chamber-forming member from the surface and removing at least two of the wiring layers, which are formed at different positions in a depth direction from the surface, to expose the corresponding barrier metals, and forming the discharge-port-forming member on the surface.