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:
May. 14, 1996
Filed:
Apr. 29, 1993
Stephan Gunther, Berlin, DE;
Francotyn-Postalia GmbH, Birkenwerder, DE;
Abstract
An ETR printing unit has electrodes and an ETR print head. A configuration for triggering the ETR print head includes a controllable energy source supplying energy for various pixels of a printed image to the electrodes of the ETR printing unit. A switching unit is provided through which the controllable energy source acts upon the electrodes temporarily connected to the energy source with a voltage or with a constant current, having a magnitude with a dependency on a temporarily different number of electrodes for supplying a larger number of electrodes with a higher voltage or a higher constant current than a lesser number would be. A microprocessor control unit for the ETR printing unit supplies the controllable energy source with a control signal corresponding to a dependency on the number of the triggered electrodes, for specifying the number of electrodes temporarily connected to the controllable energy source. A memory is connected to the microprocessor control unit.