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:
Jan. 23, 2001
Filed:
Sep. 30, 1999
Daniel Nilsson, Göteborg, SE;
Array Printers AB, Vastra Frolunda, SE;
Abstract
The present invention relates to a direct electrostatic printing method, in which a stream of computer generated signals, defining an image information, are converted to a pattern of electrostatic fields which selectively permit or restrict the transport of charged toner particles from a particle source toward a back electrode and control the deposition of those charged toner particles in an image configuration onto an image receiving medium. Particularly, the present invention refers to a direct electrostatic printing method performed in consecutive print cycles, each of which includes at least one development period (t,) and at least one recovering period (t,) subsequent to each development period (t,), wherein the pattern of electrostatic fields is produced during at least a part of each development period (t,) to selectively permit or restrict the transport of charged toner particles from a particle source toward a back electrode, and an electric field is produced during at least a part of each recovering period (t,) to repel a part of the transported charged toner particles back toward the particle source.