To effectively take out a printing plate stacked alternately with an interleaf by a simple constitution.

To take out the printing plate under the interleaf laid on the topmost layer, a presser roller is lowered so as to abut on the interleaf, the interleaf is oscillated by the vertical movement of the presser roller to release the stacked state between the interleaf and the printing plate, then the interleaf is deviated, and the printing plate is sucked by a sucking disk (steps 100-110). The presser roller is rotated with the printing plate sucked by the sucking disk to feed the interleaf, and the presser roller is vertically moved (steps 112-118). After delivering the interleaf, the printing plate is held by the sucking disk and carried in the reverse direction of the feeding direction of the interleaf (step 122).