Abstract: A film thermal processor assembly for use in an imaging system. The assembly includes a retention member for receiving a plurality of thermal processor rollers and their shaft mounted sleeve bearings which are adapted for snap insertion into snap fingers of the injection molded non-metallic retention member. The rotation member holds bias springs for radially loading the rollers. A direct contact thermal sensor having a large sensing area, which conforms to the shape of the drum, directly measures the surface temperature of the processing drum.