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. 12, 2008
Filed:
Dec. 21, 2005
Pieter Mulder, Welwyn Garden, GB;
Martin Callis, Hemel Hempstead, GB;
John Poxon, Stevenage, GB;
Riley Brede, Welwyn Garden, GB;
Ian Pitts, Cambs, GB;
Nicholas Baxter, Welwyn Garden, GB;
Pieter Mulder, Welwyn Garden, GB;
Martin Callis, Hemel Hempstead, GB;
John Poxon, Stevenage, GB;
Riley Brede, Welwyn Garden, GB;
Ian Pitts, Cambs, GB;
Nicholas Baxter, Welwyn Garden, GB;
Xerox Corporation, Norwalk, CT (US);
Abstract
A fusing apparatus includes a fuser roll and a pressure roll which define a nip therebetween. Two heating elements heat the fuser roll. One of the heating elements is configured for heating a first portion of the fuser roll while a second of the heating elements is configured for heating a second portion of the fuser roll. The second portion of the fuser roll is axially spaced from the first portion. A temperature sensing system monitors a temperature of the fuser roll in a first location and monitors a temperature of the fuser roll in a second location which is axially spaced from the first location. A control system determines an amount of power to supply to the first heating element as a function of the monitored temperatures at the first and second axially spaced locations and determines an amount of power to supply to the second heating element as a function of the monitored temperatures at the first and second axially spaced locations.