Patent ID: 6255632
Filing Date: 2001-07-03
Classification: G03G,H05B

Abstract:
A device configured to be heated to a temperature sufficient to fuse an image forming substance to a sheet, comprising:a hollow roller being made of a conductive material and having an inner surface;a coil arranged in a hollow portion of the hollow roller, said coil having a conductor that is configured to carry an electrical current that induces a current in, and heats, said conductive material of said hollow roller;a bobbin being made of an electrically insulating resin, said bobbin arranged inside the coil; anda projecting portion disposed between the bobbin and the inner surface of the hollow roller so as to maintain a gap between the hollow roller and the coil, the projecting portion being made of an electrically insulating material, whereinthe conductor of the coil being wound along the bobbin so as to form windings of the coil,the projecting portion having a flange member which is independent of the bobbin and is slidable over an outer circumferential surface of the coil, andthe heat produced by said hollow roller is sufficient to fuse the image forming substance when said sheet is exposed to said heat.