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:
Jun. 11, 1996
Filed:
Nov. 12, 1993
Array Printers AB, Moelndal, SE;
Kyocera Corporation, Kyoto, JP;
Abstract
A method and apparatus for improving printing quality in electrographic printers includes an electrode device for generating a latent electrostatic charge pattern from electric signals. The electrode device is arranged within a gap area between a particle carrier and a back electrode. During a portion of the operating cycle, preferably when no development is performed, a duel airflow that is charged with positive and/or negative ions is directed into the gap area to neutralize the electrostatic attraction forces between the toner particles, and the electrode device and for achieving a homogeneous charge level on the surface layer of the electrode device. A magnet can be positioned opposite the electrode device so as to attract toner particles.