Patent ID: 9382661
Filing Date: 2016-07-05
CPC Classification: D21F,G03G,H05B

Claim Text:
1. An induction heating unit configured to inductively heat a heating member being rotated in a predetermined rotating direction by magnetic flux, comprising: a housing; a magnetic flux generating source fixed to the housing so as to extend in a sheet width direction intersecting the rotating direction and configured to generate the magnetic flux; a core member made of magnetic material, secured to the housing and configured so as to make a magnetic path through which the magnetic flux passes; and a securing member made of thermal contraction material and contracted by being heated at predetermined temperature to secure the core member to the housing, wherein the core member is an arch core extending in an arch shape along the rotating direction, the arch core including one end part arranged at an upstream side in the rotating direction and another end part arranged at a downstream side in the rotating direction, the housing includes a projected piece projected along the one end part or the other end part of the arch core, the securing member has at least a first ring shape bundling integrally the one end part or the other end part of the arch core with the projected piece.