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:
Nov. 18, 2003
Filed:
Dec. 06, 2001
Applicant:
Inventors:
Shin Yamauchi, Tokyo-To, JP;
Masaya Arakawa, Hiratsuka, JP;
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 1/500 ;
U.S. Cl.
CPC ...
G06F 1/500 ;
Abstract
Around a heat roller, a center thermistor ( ) as a first temperature sensor is placed within the range of ±45° from a portion where maximum heat is generated by an IH coil, and a front thermistor ( ) as a second temperature sensor is placed within the range of ±45° from a portion where minimum heat is generated by the IH coil. A main CPU ( ) performs fixing control on the basis of sensing temperatures from these two thermistors ( ). This can prevent an increase in the cost and uniformize the heat distribution of a fixing roller.