PURPOSE: To easily handle a photosensitive material of large size, by constituting a device so that a shifting means is provided with a mechanism for fetching one sheet of the uppermost layer of the photosensitive matrial and shifting it in the back slanting upper direction, and a mechanism for switching the shifting direction of the shifted photosensitive material, into this side direction on the almost horizontal surface.

CONSTITUTION: A feed part 10 and an exposing part 40 are provided on the front side of a device so that the feed part 10 is positioned in the lower part of the exposing part 40. The first shifting means constituted of a printing sheet feeding conveyor 30, etc. which shift a photosensitive matrial (hereinafter called PS printing sheet) to the exposing part 40 from the feed part 10, and are driven by an air cylinder AC4 and a motor M3 take out one sheet of the uppermost layer of the fed PS printing sheet, shifts it in the back slanting upper direction by a printing sheet feeding conveyor 25, and also, as for the PS printing sheet shifted in the back slanting upper direction in this way, its moving path is switched into this side direction on the almost horizontal surface by the printing sheet feeding and discharging conveyor 30.