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. 08, 2012
Filed:
Dec. 30, 2008
Steven Wayne Bergstedt, Winchester, KY (US);
Prabuddha Jyotindra Mehta, Lexington, KY (US);
Steven Wayne Bergstedt, Winchester, KY (US);
Prabuddha Jyotindra Mehta, Lexington, KY (US);
Lexmark International, Inc., Lexington, KY (US);
Abstract
A substrate heating system for an inkjet printhead. The substrate heating system includes heating resistors distributed in association with the ink jet nozzle structures, and located thermally adjacent thereto. The plural switching transistors that control the current through the substrate heating resistors are also distributed with the ink jetting nozzle structures, together with the substrate heating resistors. Polysilicon is used in constructing the substrate heating resistors. Cells of the substrate heaters can be arranged physically in a linear manner, along the nozzle structures. The substrate heater cells can be controlled so that the temperature of various zones of nozzle structures can be controlled.