HEATING DEVICE, DRYING DEVICE, FIXING DEVICE, IMAGE FORMING APPARATUS, AND IMAGE FORMING SYSTEM

摘要

A heating device including a heating member, a heat source, multiple non-contact temperature detectors, a contact temperature detector, a heat source drive controller, and a temperature detection abnormality detector is provided. The heating member contacts a heating target being conveyed. The heat source supplies heat to the heating member. Each of the non-contact temperature detectors detects a first temperature of the heating member without contacting the heating member. The contact temperature detector detects a second temperature of the heating member by contact with the heating member. The heat source drive controller controls drive of the heat source based on the first temperatures. The temperature detection abnormality detector performs a determination on whether each one of the non-contact temperature detectors has an abnormality or not while the heating target is not conveyed, by comparing the first temperature and the second temperature.

主权项

1. A heating device comprising:
a heating member to contact a heating target being conveyed; a heat source to supply heat to the heating member; a plurality of non-contact temperature detectors, each of which to detect a first temperature of the heating member without contacting the heating member; a contact temperature detector to detect a second temperature of the heating member by contact with the heating member; a heat source drive controller to control drive of the heat source based on the first temperatures detected by the non-contact temperature detectors; and a temperature detection abnormality detector to perform a determination on whether each one of the non-contact temperature detectors has an abnormality or not while the heating target is not conveyed, by comparing the first temperature detected by the one of the non-contact temperature detectors and the second temperature detected by the contact temperature detector.