Oh dear, are you confusing Laser Cutter and laser printer? All what laser(s) do in Laser printer is draw statically charged image on the drum, after that toner is being attracted to it, transferred on to paper and fused on it by Heating/Fusing unit. The temp. of the fusing unit can be controlled but not your desire, at some point if you wish to leave it cold - it can't happen, it need to be set less for thin materials and higher for thicker cardstocks. Why, in the heaven, would you need to think or care what temperature state of the laser unit. Who cares! - I am sure it has it's own cooling fan, let them work it out without you worry about it.