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:
Oct. 25, 2011
Filed:
Oct. 31, 2007
Applicant:
Junichi Azumi, Sendal, JP;
Inventor:
Junichi Azumi, Sendal, JP;
Assignee:
Ricoh Company, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41J 2/025 (2006.01);
U.S. Cl.
CPC ...
Abstract
A liquid dispenser head includes a plurality of nozzles, a plurality of liquid chambers, and a plurality of vibration members. The nozzle is used to discharge liquid. The liquid chamber communicates with the nozzle. The vibration member has a vibration portion, which is used as a deformable wall face of the liquid chamber. The vibration member includes a metal member and a resin layer directly formed on the metal member, and the resin layer has a coefficient of linear expansion greater than a coefficient of linear expansion of the metal member.