Patent ID: 11947293
Assignee: SHARP KABUSHIKI KAISHA
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A fusing device comprising:
an endless rotatable fusing belt;
a nip forming member that is disposed on an inner circumferential surface of the fusing belt;
a pressure roller that is in pressure contact with the nip forming member from an outer side of the fusing belt and forms a fusing nip area between the pressure roller and the fusing belt;
a heat source that is disposed inside the fusing belt and heats the fusing belt;
a heat-conductive member that is disposed on a lateral side of an outer circumference of the fusing belt; and
a thermostat that shuts off electric power supply to the heat source when a temperature of the fusing belt becomes a predetermined temperature, wherein
the heat-conductive member extends over a width area in a rotation axis direction of the fusing belt and has an opening, and
the thermostat is provided at a position facing the opening.