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:
Apr. 22, 2014
Filed:
Jul. 05, 2012
Pere Esterri Pedra, Sant Cugat del Valles cat, ES;
David Soriano Fosas, Terrassa BCN, ES;
Javier González Bruno, Terrassa Barcelona, ES;
Eduard Pamies Corominas, Tarragona Tarragona, ES;
Pere Esterri Pedra, Sant Cugat del Valles cat, ES;
David Soriano Fosas, Terrassa BCN, ES;
Javier González Bruno, Terrassa Barcelona, ES;
Eduard Pamies Corominas, Tarragona Tarragona, ES;
Hewlett-Packard Development Company, L.P., Houston, TX (US);
Abstract
A method and apparatus for controlling firing energy in a printer pen of a thermal inkjet printer are described. A digital voltage value representative of a voltage output by a printer-pen power supply is obtained. The printer-pen power supply is electrically coupled to a switch. The switch is electrically coupled to a nozzle resistor and is controlled using a switch logic signal. A voltage level of the switch logic signal is set based on said digital voltage value and a voltage drop due to a parasitic resistance between the printer-pen power supply and the switch.