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. 02, 2017
Filed:
Dec. 31, 2015
Lexmark International, Inc., Lexington, KY (US);
Jichang Cao, Lexington, KY (US);
Christopher E. Rhoads, Georgetown, KY (US);
John P. Richey, Lexington, KY (US);
David Anthony Schneider, Lexington, KY (US);
Daniel Steinberg, Lexington, KY (US);
LEXMARK INTERNATIONAL, INC., Lexington, KY (US);
Abstract
A system and method for controlling the fuser assembly of an electrophotographic imaging device, including initiating reading line current and line voltage for a plurality of consecutive AC cycles; from the AC cycle readings, identifying heater on cycles in which power is applied to the fuser heater and heater off cycles in which power is not applied to the fuser heater; calculating heater power from the identified heater on cycles and the heater off cycles, the heater power being the power of the fuser heater during a predetermined heater on cycle of the consecutive AC cycles; calculating a fuser heater voltage of the fuser heater during the predetermined heater on cycle based on the voltage readings; calculating a resistance of the fuser heater based on the calculated heater power and the calculated fuser heater voltage; and controlling the fuser assembly based upon the calculated resistance of the fuser heater.