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:
Sep. 06, 1983
Filed:
Feb. 17, 1981
Mitsuo Tsuzuki, Tokyo, JP;
Michihisa Suga, Tokyo, JP;
Nippon Electric Co., Ltd., Tokyo, JP;
Abstract
A demand ink-jet printer uses droplets of conductive ink for recording on a recording medium. In greater detail, an ink chamber, filled with conductive ink, has a nozzle in one wall and a piezoelectric member attached to another wall. Droplets of ink are driven out the nozzle in response to a driving pulse applied to the piezoelectric member. The energy content of the driving pulses controls both the size of the droplets and the potential of a charging voltage applied to the droplets. This way, the combined charge and size may be held constant so that large or small drops may be generated to produce half-tone pictures and the droplets may be electrostatically deflected accurately, despite the variance in droplet size.