Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Satoshi Kinouchi0
Osamu Takagi0
Date of Patent
October 31, 2006
0Patent Application Number
111044990
Date Filed
April 13, 2005
0Patent Primary Examiner
Patent abstract
A fixing device of the present invention has first and second thermistors which detect the temperatures at predetermined positions in the longitudinally direction of a heating roller, first and second coils which can increase independently the temperatures at the center and the end of the heating roller, a driving circuit which supply power alternately to the coils, first and second switching circuits which supply a predetermined power to each coil, a control unit, and a temperature detection circuit.
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