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:
Oct. 25, 2011
Filed:
Jul. 02, 2008
John Glenn Edelen, Versailles, KY (US);
Prabuddha Jyotindra Mehta, Lexington, KY (US);
John Glenn Edelen, Versailles, KY (US);
Prabuddha Jyotindra Mehta, Lexington, KY (US);
Lexmark International, Inc., Lexington, KY (US);
Abstract
Disclosed is a method for compensating a shift in an ON resistance of a transistor in a chip of a printhead of an inkjet printer. The method includes determining a value of a life indication parameter of the printhead and comparing the determined value of the life indication parameter of the printhead with at least one predetermined value of the life indication parameter. The at least one predetermined value of the life indication parameter of the printhead is stored in at least one of a memory of the inkjet printer and a memory of the chip of the printhead. Thereafter, a gate voltage input to the transistor is modified based on a difference between the determined value of the life indication parameter and the at least one predetermined value of the life indication parameter of the printhead for compensating the shift in the ON resistance of the transistor.