"加热压光辊" can be translated as "heated calendering roll" or "heated smoothing roll".
"Calendering roll" is a term commonly used in the industry for rolls used in calendering machines, which are used to smooth or polish materials through pressure and heat.
"Smoothing roll" also conveys the function of the roll in smoothing the material surface.
Both translations are acceptable, with "heated calendering roll" being more specific to the calendering process.