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:
Jul. 30, 1996
Filed:
Aug. 10, 1993
Rohm Co., Ltd., Kyoto, JP;
Abstract
An inkjet print head and inkjet printer can stabilize the characteristic of ink discharge and improve the quality of printing by providing a vibrating plate, a part of which is vibrated by deforming a piezoelectric element corresponding to a pressure chamber without transmission of the vibration to any other vibrating plate part corresponding to another pressure chamber. The inkjet print head and inkjet printer can prevent any floating in the grounding electrode. In the inkjet print head and inkjet printer, furthermore, the characteristic of ink droplet discharge can be stabilized by reducing and equalizing the distance between the grounding electrode and each of the piezoelectric element electrode. A head unit is mounted on a base which includes a support for supporting the parts of the vibrating plate corresponding to the respective nozzles. A flexible cable having electrode portions connected to the piezoelectric elements has a grounding electrode located at a position corresponding to a circular area which is defined by the pressure chambers and piezoelectric elements.