Patent ID: 6701120
Filing Date: 2004-03-02
Classification: F16C,G03G

Abstract:
A heating device, comprising:a heating roller configured to contact a heated member; and a ball bearing configured to support the heating roller, wherein a resin layer is adhesively provided to a surface of a supported portion of a core member of the heating roller which is supported by the ball bearing, and wherein a roughness of a contact portion of the surface of the resin layer that contacts the ball bearing is set to a roughness predetermined value in which a production of a noise caused by a rubbing of the resin layer against the ball bearing is substantially suppressed and an insulating effect is enhanced, wherein an outer diameter of the supported portion of the heating roller is at least as large as an outer diameter of the contacting portion of the heating roller with the heated member, and wherein when the outer diameter of the supported portion of the heating roller is larger than the outer diameter of the contacting portion of the heating roller with the heated member, a portion of the supported portion of the heating roller that is connected to the contacting portion of the heating roller with the heated member forms a tapered portion.