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:
May. 28, 1985
Filed:
Oct. 06, 1982
Applicant:
Inventor:
Haruhiko Koto, Shiojiri, JP;
Assignees:
Epson Corporation, Tokyo, JP;
Kabushiki Kaisha Suwa Seikosha, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01D / ;
U.S. Cl.
CPC ...
3461 / ; 138 44 ;
Abstract
An ink jet printing apparatus which ejects ink towards a recording medium. The apparatus includes a nozzle having a plurality of nozzles and a plurality of pressurization chambers. Each nozzle orifice is in fluid communication with one of the pressurization chambers. An ink supply system supplies ink to each of the pressurization chambers. Each pressurization chamber includes first and second transducers which selectively deform the respective pressurization chambers for ejecting ink out of the nozzles. Each first and second transducers are selectively driven by independent driving circuits.