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:
Jun. 28, 2016
Filed:
Sep. 16, 2015
Takeshi Shimizu, Kanagawa, JP;
Tomohiko Kohda, Ibaraki, JP;
Takahiro Yoshida, Ibaraki, JP;
Kanshi Abe, Ibaraki, JP;
Shiomi Andou, Kanagawa, JP;
Takayuki Nakai, Kanagawa, JP;
Ryo Kasahara, Kanagawa, JP;
Takeshi Shimizu, Kanagawa, JP;
Tomohiko Kohda, Ibaraki, JP;
Takahiro Yoshida, Ibaraki, JP;
Kanshi Abe, Ibaraki, JP;
Shiomi Andou, Kanagawa, JP;
Takayuki Nakai, Kanagawa, JP;
Ryo Kasahara, Kanagawa, JP;
RICOH COMPANY, LTD., Tokyo, JP;
Abstract
A disclosed liquid-ejection head for ejecting liquid droplets includes a substrate having a diaphragm forming a part of walls of a pressure liquid chamber, and a piezoelectric element adhered to the substrate with adhesive, and configured to apply pressure to the pressure liquid chamber via the diaphragm. The piezoelectric element has a surface facing the substrate having the diaphragm, and the surface has one or more projection parts in an area in which the pressure liquid chamber is not disposed, and whereon the substrate having the diaphragm has one or more recess parts that fit in the respective projection parts.