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:
Mar. 10, 2015
Filed:
May. 27, 2014
Canon Kabushiki Kaisha, Tokyo, JP;
Masahisa Watanabe, Yokohama, JP;
Kenji Fujii, Yokohama, JP;
Keisuke Kishimoto, Yokohama, JP;
Ryotaro Murakami, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A method of manufacturing a liquid discharge head includes: forming a first hole which penetrates through a wafer and becomes at least part of a liquid supply port and a second hole which does not penetrate through the wafer and becomes at least part of a cut-off portion from a front side of the wafer; arranging a dry film on the front side of the wafer; forming a flow passage forming member by heating and developing the dry film; and cutting off the liquid discharge head from the wafer by grinding the wafer from a back side so that the second hole penetrates through the wafer.