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:
Jan. 29, 2008
Filed:
Aug. 31, 2005
John Lemaster, Lexington, KY (US);
Calvin D. Murphy, Georgetown, KY (US);
John Lemaster, Lexington, KY (US);
Calvin D. Murphy, Georgetown, KY (US);
Lexmark International, Inc., Lexington, KY (US);
Abstract
A method of controlling a fuser assembly within an image forming apparatus having a fuser assembly including a heating member and a backup member cooperating with the heating member to form a nip therebetween for fusing images onto substrates passing through the nip. The method is provided to minimize or avoid a temperature droop condition of the fuser and includes the steps of determining a set point temperature for performing a fusing operation, and determining whether the image forming apparatus has transitioned from a standby mode to a print mode upon receipt of a print job. If a sensed temperature of the fuser is within a temperature range having an upper threshold temperature that is less than the heating temperature and greater than the set point temperature or a lower threshold temperature, a power control for the fuser is switched to operate in a high power region, increasing power to the fuser, to provide heat energy to the heating member.