Patent ID: 11886134
Assignee: RICOH COMPANY, LTD.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 7:
8. A heating device comprising:
a heater;
a safety device having a heat-sensitive surface facing the heater, the safety device configured to cut off power supply to the heater in response to a temperature of the heat-sensitive surface being equal to or higher than a predetermined temperature; and
a holder configured to hold the heater, the holder forming a through hole that opens toward the heater, the holder including a step portion on an inner circumferential surface of the through hole, and the step portion configured to support an end of the heat-sensitive surface and separate a central portion of the heat-sensitive surface of the safety device from the heater, wherein
the holder includes three step portions, the three step portions including the step portion, and the three step portions being at three positions in a circumferential direction of the through hole.