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:
Apr. 23, 1996
Filed:
Feb. 18, 1993
Applicant:
Inventors:
Hisayoshi Fujimoto, Kyoto, JP;
Akihiro Shimokata, Kyoto, JP;
Assignee:
Rohm Co., Ltd., Kyoto, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B41J / ;
U.S. Cl.
CPC ...
347 70 ;
Abstract
An ink jet printing head which is composed of a smaller number of parts than those in a conventional one, which leads to a reduction in the number of assembly steps, enhanced productivity and a reduction in the cost. A piezoelectric element is provided on a diaphragm at the portion corresponding to each pair of adjacent pressure chambers. A piezoelectric element includes an electrode which extends along each pressure chamber. An electronic machine incorporating this ink jet printing head is also provided.