PURPOSE: To obtain a printing paper receiving mechanism capable of discharging printing papers without causing waving in all directions as well as any shock wrinkle during the printing period by using a system in which a printing face receiving cylinder and a feeding wheel are attached to a paper discharge shaft, and a specific guide face is formed on a paper discharge claw base.

CONSTITUTION: A printing face receiving cylinder 20 having a printing paper receiving face 21 of a circular arc form on its periphery is attached to a paper discharge shaft 11 facing a pressure cylinder 4, and feeding wheels 18 are also attached to the shaft 11 in such a way as to arrange feeding teeth 18a on the same circumference as the receiving face 21. On a paper discharge claw base 23 attached to the paper discharge chain 13, a guide face 24a connected to the receiving face 21 on the same circumference as the printing paper receiving face 21 from a time when receiving printing paper P on the periphery by the paper discharge claw 14 and also turning with the receiving face 21 at a given angle is formed. The printing paper P can be discharged without causing waving in all directions through the guide face 24a and the receiving face 21 and shock wrinkle in the offset printing can be completely prevented.