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:
Aug. 02, 1977
Filed:
Nov. 10, 1975
Stephen Barasch, Southfield, MI (US);
Richard C Fedder, Detroit, MI (US);
Burroughs Corporation, Detroit, MI (US);
Abstract
An apparatus for forming solid character charge patterns on a dielectric surface in a non-impact printing system. The apparatus comprises a corona source of ions and a rotatable stencil drum surrounding the corona source to shape the ions generated by the corona source and accelerated therefrom by electrostatic forces into solid patterns of charge. A coaxial stationary shield is provided surrounding the stencil drum to capture the solid patterns of charge. A series of grid covered openings are longitudinally disposed along the shield to form a print station. Means are provided to electrically bias the individual grids covering the openings in the shield at a potential which either blocks the passage or enhances the transmission of patterns of charge through the shield onto an adjacent dielectric surface.