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:
Aug. 11, 2009
Filed:
Nov. 15, 2004
Scott Jong Ho Limb, Palo Alto, CA (US);
Michael Yu Tak Young, Cupertino, CA (US);
Karl A. Littau, Palo Alto, CA (US);
Scott Jong Ho Limb, Palo Alto, CA (US);
Michael Yu Tak Young, Cupertino, CA (US);
Karl A. Littau, Palo Alto, CA (US);
Palo Alto Research Center Incorporated, Palo Alto, CA (US);
Abstract
The presently described embodiments are directed to a calibration method and system for thin film thermistors that are locally heated with integrated thin film heaters. Initially, print head temperature is either measured or referenced. Then, transient thermistor resistances are measured and used to determine the thermistor resistance at a higher temperature. Notably, this calibration method is advantageously implemented as a step of an existing process without having to expose the print heads to operating temperatures. In some implementations of the presently described embodiments, trimming of the thermistors may be required once calibrated.