Patent ID: 6920294
Filing Date: 2005-07-19
Classification: G03G,H05B

Abstract:
1. A heating apparatus comprising: a beat roller rotating around a rotation axis; a press roller generating a predetermined pressure with the heat roller; a first coil heating the heat roller by induction heating; a second coil located in parallel to the rotation axis so as to be adjacent to the first coil with a predetermined space therebetween, the second coil heating the heat roller by induction heating; a first drive circuit driving the first coil; and a second drive circuit driving the second coil, wherein when the first and second drive circuits are driven, one of peak positions of surface temperature of the heat roller is set to be around a central portion of a width of the first coil in a direction parallel to the rotation axis, and wherein the first and second drive circuits alternately drive the first and second coils.