Patent ID: 6036039
Filing Date: 2000-03-14
Classification: G03G

Abstract:
A temperature distribution equalizing structure of a heat roller in a laser image forming device, comprising:a heater having a cylindrical hollow insulator, a lamp source contained said cylindrical hollow insulator, and two ends connected to and supported by a pair of rods;a cylindrical hollow heat roller rotating about an axis of said cylindrical hollow insulator, having openings;a pair of bearing members respectively disposed on either end of said cylindrical hollow heat roller and attached to outer circumferential surface of end portion of said cylindrical hollow heat roller, having a circular plate covering said opening and a first aperture formed on said circular plate, rotating with said cylindrical hollow heat roller; anda gear disposed on outside of said circular plate of one of said bearing members, having at least one protrusion formed on said gear and fixed to said bearing member, having a second aperture, rotating with said bearing member and said cylindrical hollow heat roller about said axis of said cylindrical hollow insulator while said cylindrical hollow insulator is inserted into said first and second aperture with a gap.