US Patent 11850869 Retransfer printer with platen roller homing

A printing mechanism of a plastic card retransfer printer includes a platen roller with a homing mechanism attached thereto that automatically returns the platen roller to the same home position at the end of each printing pass. The homing mechanism ensures that the portion of the retransfer film being printed on travels over the same surfaces of the platen roller in each print pass. Therefore, any variations in the surface of the platen roller will manifest themselves at the same locations on the resulting printing on the retransfer film.