PURPOSE: To provide a printer of superior carrying properties of screen printing papers in a printer, provide an image of high quality and increase the number of ejected and stored films in a given capacity.

CONSTITUTION: A screen printing base paper S is constituted by sticking a resin film with a substrate by means of a bonding agent, and the constitution is processed by a processing section 9 in the integrated state and wound on a printing drum 11 with the resin film sheet inner side, and then the substrate only is separated by a separating pawl 21 and ejected to the outside of a printer. At the time of printing, the resin film only is set on the printing drum 11 to improve the quality of a printed image. After printing, the waste resin films only are thrown away to an plate ejection section 27 to increase the number of ejected and stored films of the plate ejection section 27.