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FUSER THERMISTOR Disclosure Number: IPCOM000026044D
Original Publication Date: 1989-Dec-31
Included in the Prior Art Database: 2004-Apr-05

Publishing Venue

Xerox Disclosure Journal


An electrophotographic printing machine uses a fusing device to permanently fix a toner powder image to a copy sheet. One type of fusing device frequently employed includes a heated fuser roller and a pressure roller. The fuser roller and pressure roller define a nip through which the copy sheet with the toner powder image thereon passes. The heated fuser roller contacts the toner powder image. In order to optimize fixing of the toner powder image to the copy sheet, it is necessary to control the temperature of the surface of the fuser roller contacting the toner powder image. It is, therefore, necessary to monitor the temperature of the fuser roller surface. The surface temperature of the fuser roller may be monitored by a thermistor. The thermistor is mounted on the surface of the fuser roller. Response time is improved by using a glass coated thermistor wafer having a metal coating thereon.