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:
Sep. 15, 2026
Filed:
Nov. 07, 2023
Applicant:
Riso Technologies Corporation, Tokyo, JP;
Inventor:
Tsubasa Konishi, Sunto Shizuoka, JP;
Assignee:
RISO Technologies Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41J 2/14 (2006.01);
U.S. Cl.
CPC ...
B41J 2/14209 (2013.01); B41J 2002/14362 (2013.01); B41J 2002/14491 (2013.01); B41J 2202/12 (2013.01);
Abstract
According to one embodiment, a liquid ejection head includes an actuator with a plurality of pressure chambers spaced from each other in a first direction. Each pressure chamber extends lengthwise in a second direction intersecting the first direction. An anti-reflection film is on an inner surface of the pressure chambers. A diaphragm portion is at an end of each pressure chamber. The diaphragm portion provides a flow cross-section that is less than the pressure chamber and is between the pressure chamber and a common chamber to which the pressure chambers are fluidly connected.