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:
Feb. 05, 2019
Filed:
Aug. 25, 2017
Canon Kabushiki Kaisha, Tokyo, JP;
Shintaro Kasai, Yokohama, JP;
Akiko Saito, Tokyo, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An element substrate includes a substrate including a supply port configured to supply liquid, and a discharge port forming member including a discharge port configured to discharge the liquid supplied from the supply port. The discharge port forming member includes a liquid flow path communicating between the discharge port and the supply port on a surface opposed to a surface where the discharge port is provided. The discharge port forming member includes thick film portions and thin film portions in a region where the liquid flow path is formed. The thick film portions are lined up in a first direction so as to sandwich the discharge port therebetween and thicker than an adjacent portion adjacent to the discharge port. The thin film portions are lined up in a second direction intersecting with the first direction so as to sandwich the discharge port therebetween and thinner than the adjacent portion.