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. 29, 2007
Filed:
Oct. 18, 2004
Brian Keith Bartley, Burgin, KY (US);
Douglas Campbell Hamilton, Lexington, KY (US);
Steven Jeffrey Harris, Lexington, KY (US);
Kevin Dean Schoedinger, Lexington, KY (US);
Johnny Ray Sears, Midway, KY (US);
Jerry Wayne Smith, Irvine, CA (US);
Brian Keith Bartley, Burgin, KY (US);
Douglas Campbell Hamilton, Lexington, KY (US);
Steven Jeffrey Harris, Lexington, KY (US);
Kevin Dean Schoedinger, Lexington, KY (US);
Johnny Ray Sears, Midway, KY (US);
Jerry Wayne Smith, Irvine, CA (US);
Lexmark International, Inc., Lexington, KY (US);
Abstract
An improved laser printer is provided that keeps its fuser at a standby temperature that is somewhat raised above the ambient temperature, which allows the printer to operate more quickly (to begin printing the first page) when a print job arrives at the printer. The time needed to raise the fuser's temperature is minimized, so that other printer operations become the determining factor in the time to first print parameter. The electrical energy that energizes the fuser is provided in a form that prevents light flicker, by use of AC waveform phase control, or by use of integer half cycle control. The present invention uses closed-loop feedback control, and the type of controller is a PID controller.