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. 28, 2015
Filed:
May. 14, 2013
Stmicroelectronics Asia Pacific Pte. Ltd., Singapore, SG;
Stmicroelectronics, Inc., Coppell, TX (US);
Stmicroelectronics Pte. Ltd., Singapore, SG;
Madanagopal Kunnavakkam, Singapore, SG;
Jin Zhi Li, Singapore, SG;
Teck Khim Neo, Singapore, SG;
Kenneth W. Smiley, Carrollton, TX (US);
Chun Chek Bong, Singapore, SG;
STMicroelectronics, Inc., Coppell, TX (US);
STMicroelectronics Asia Pacific Pte. Ltd., Singapore, SG;
STMicroelectronics Pte Ltd, Singapore, SG;
Abstract
An ink jet printhead device includes a substrate and a plurality of thermal resistors on the substrate. Each thermal resistor includes first and second electrodes and a resistive layer extending therebetween. A polarity-changing driver is coupled to the plurality of thermal resistors and configured to change a driving polarity between the first and second electrodes of each of the plurality of thermal resistors.