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. 06, 2000
Filed:
Sep. 10, 1997
Guido Desie, Herent, BE;
Raf Voets, Hever, BE;
Agfa-Gevaert, Mortsel, BE;
Abstract
A method for direct electrostatic printing includes the steps of providing a magnetic brush carrying carrier particles and toner particles, the carrier particles having a specific volume resistivity of between 10.sup.1 .OMEGA..multidot.cm and 10.sup.9 .OMEGA..multidot.cm and a specific density lower than 5 g/cm.sup.3, creating in an electrical field a flow of charged toner particles directly from the magnetic brush to a substrate, image wise modulating the flow of charged toner particles by a printhead structure having printing apertures and control electrodes, image wise depositing toner particles from the image wise modulated flow of charged toner particles on the substrate, and fixing the toner particles to the substrate.