Patent ID: 6946629
Filing Date: 2005-09-20
Classification: G03G,H05B

Abstract:
1. An induction heating coil for an induction heating type fixing device including a heat roller, comprising: a main coil having two leads positioned inside said heat roller at a center portion substantially corresponding to a main sheet passing range; a first auxiliary coil having two leads positioned inside said heat roller at a first portion other than the center portion, said first portion being located on a first side of the center portion and substantially corresponding to an auxiliary sheet passing range; and a second auxiliary coil having two leads positioned inside said heat roller at a second portion other than the center portion, said second portion being located on a second side of the center portion opposite the first side and substantially corresponding to said auxiliary sheet passing range, wherein one of said two leads of said first auxiliary coil and one of said two leads of said second auxiliary coil are interconnected over said main coil.