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. 23, 2021
Filed:
Feb. 18, 2020
Canon Kabushiki Kaisha, Tokyo, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
In a liquid ejection head, a substrate is provided with a first inflow port located on an upstream side of a pressure chamber with respect to a direction of flow of liquids in a liquid flow passage and configured to allow a first liquid to flow into the liquid flow passage, a second inflow port located on the upstream side of the first inflow port and configured to allow a second liquid to flow into the liquid flow passage, and a lateral wall extending in a direction of extension of the liquid flow passage. At least part of the lateral wall is located above the first inflow port. In the pressure chamber, the first liquid flows in contact with a pressure generating element while the second liquid flows closer to the ejection port than the first liquid does.