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. 14, 1998
Filed:
Dec. 28, 1995
Yoshiko Uriu, Osaka, JP;
Eiichi Tone, Osaka, JP;
Mita Industrial Co., Ltd., Osaka-fu, JP;
Abstract
An ink ejecting device for use in an ink jet printing apparatus, includes: a number of ejecting elements arranged in a matrix having a first number of columns and a second number of rows, each ejecting element having: an ink chamber whose volume is changeable, an ejection nozzle communicating with the ink chamber, and an ink supply hole communicating with the ink chamber, and an piezoelectric conversion element, a drive portion for driving piezoelectric conversion elements of each column in a manner for expanding the ink chamber to allow ink to flow into the ink chamber and contracting the ink chamber to eject ink from the ink chamber through the ejection nozzle.