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. 21, 2004
Filed:
Jun. 02, 2003
Filip Alm, Bohus, SE;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A direct printing method and apparatus in which a computer generated image information is converted into a pattern of electrostatic fields, which selectively transport electrically charged toner particles from a particle source (3) toward a back electrode through a printhead structure including a plurality of appertures and control electrodes arranged in conjunction to the apertures whereby the charged toner particles are deposited in image configuration on an image receiving surface caused to move relative to the printhead structure. Control means is arranged to address an amount of charged toner particles corresponding to at least 35 charged toner particles per addressed dot at least for a part of the image location areas.