Patent ID: 6704537
Filing Date: 2004-03-09
Classification: G03G

Abstract:
An image heating apparatus for heating an image formed on a recording material, comprising:a heating member having a heat-generating layer, and magnetic field-generating means for generating a magnetic field to induce an eddy current in said heat-generating layer, said magnetic field-generating means comprising a core and a coil disposed around said core in a longitudinal direction of said core; wherein said coil has a minimum length L1 and a maximum length L2 respectively in a longitudinal direction thereof; said core has a maximum length Lc in the longitudinal direction thereof; said core and said heating layer form a gap d therebetween; and the recording material has a prescribed maximum size giving a passing width Lp, satisfying the following relationship: Lp+2(2d+1)&lE;Lc&lE;L1<L2.