Patent ID: 8126347

Claim:
An apparatus comprising: an image fuser member rotatably supported in the apparatus, the image fuser member configured to fuse an image on media; a heater coupled to the image fuser member, the heater configured to heat the image fuser member; a pressure assembly rotatably supported in the apparatus, the pressure assembly coupled to the image fuser member, the pressure assembly configured to exert pressure against the image fuser member; a temperature sensor coupled to the pressure assembly, the temperature sensor configured to sense a temperature of the pressure assembly; and a controller coupled to the heater and coupled to the temperature sensor, the controller configured to adjust a temperature set point of the image fuser member based on the sensed temperature of the pressure assembly, wherein the controller is configured to adjust the temperature of the image fuser member based on the temperature of the pressure assembly based on T b =T b — ss +a ( T pr — ss −T pr )− b ( T pr — ss −T pr ) 2 where T b represents the adjusted image fuser member temperature set point, where T b — ss represents an image fuser member steady state temperature for a target toner-media interface temperature, where T pr — ss represents a pressure assembly steady state temperature for a target toner-media interface temperature, where T pr represents a measured pressure assembly temperature, and where a and b are coefficients.