PURPOSE: To restart printing operation immediately after its interruption by providing a movement-width direction control means for photographing paper and an auxiliary flap which covers the entrance for a clamping conveyor roller to a photographic paper holding device which sends out continuous photographic paper after printing to a developing device.

CONSTITUTION: The continuous photographic paper 16 is sent from a printing device 12 to a roller 20. Then, the photographic paper 16 is run between a flap 70 and the auxiliary flap 112 which has a width control means and sent to the 1st clamping conveyor roller 30. Then, the flap 70 is rotated counterclockwise (chain-line position 70) and the photographic paper is sent to the 2nd clamping conveyor roller 90 and sent out to a development part. At this time, the photographic paper 16 is loosened as the 1st loop part between a guide 28 and the roller 30 and as the 2nd loop part between the rollers 30 and 90, and stacked. The end part of the photographic paper 16 is prevented from entering the roller 30 by the auxiliary flap 112 even when the paper 16 is cut 24 during the interruption of printing operation. Further, width control means are provided on both sides of the 1st clamping conveyor roller 90. Thus, the auxiliary flap and width control means are provided, so cutters are reduced and the printing operation is restarted immediately.