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, 1977
Filed:
Apr. 02, 1976
Edwin R Phillips, Rosemont, PA (US);
Raymond J Stankiewicz, Philadelphia, PA (US);
Sperry Rand Corporation, New York, NY (US);
Abstract
A multi-jet ink printer comprises a drum having rows of pointed jet formers, or prongs, mounted about its outside surface. The drum is successively rotated such that the tips of the prongs are dipped into a reservoir of ink and thereafter pointed toward a recording carrier, such as paper. When the prongs are directed toward the carrier, an electrostatic field is established between the drum and electrodes located on the opposite side of the carrier. The ink is thereby caused to leave the sharp points and form ink jets composed of very small droplets of ink. The ink is thereby deposited on the carrier. There is an electrode located opposite each prong which is selectively energized to produce dots on the carrier when the prong is in selected positions relative to the carrier. In this respect, the drum is moved axially (horizontally) to scan rows on the carrier, and the carrier is moved longitudinally (vertically) to scan vertically on the carrier.