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. 12, 1993
Filed:
Nov. 08, 1991
Toshio Narita, Nagano, JP;
Shinri Sakai, Nagano, JP;
Masaru Hoshino, Nagano, JP;
Yoshiko Tatsuzawa, Nagano, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
An ink-jet recording head, in which two piezoelectric substrates are opposite each other in polarization direction, and grooves are formed across the interface of the two substrates at a predetermined pitch so as to form cavities. One of each of the cavities is opened to the atmosphere and include an orifice adapted for squirting ink drops. The cavities have electrodes formed on their inner surfaces. When a voltage of one polarity is applied to the electrode for the cavity from which ink drops is to be generated whereas a voltage of the other polarity is applied to the electrodes for the two adjacent cavities, the diaphragms separating the three cavities deform in a shear mode towards the cavity from which ink drops is to be generated. As a result, the capacity of the cavity from which ink drops is to be generated decreases to have the ink in the cavity squirt outward from the orifice.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile