Patent ID: 7045749
Filing Date: 2006-05-16
Classification: G03G,H05B

Abstract:
1. A heating device comprising: a body to be heated to which a magnetic field is supplied to generate heat and which heats a developer on a material to be recorded; first and second coil bodies which generate an induced heat in the body to be heated from the outside of the body to be heated, a plurality of first and second coil bodies being disposed in a longitudinal direction of the body to be heated, the first and second coil bodies including litz wires whose cross sections are formed in rectangular shapes; and a pressure applying member which contacts the body to be heated in a predetermined position and which fixes the developer on the material to be recorded passing between the pressure applying member and the body to be heated wherein the sizes of sectional shapes of the litz wires of the first and second coil bodies in a direction distant from a center of the body to be heated are smaller than those extending along the peripheral surface crossing the center of the body to be heated at right angles.