To enable an easy and rapid reset of a state at a removed time point in the case of again mounting a plate cylinder even if the cylinder is removed from a stencil printer body by replacing or the like of the cylinder.

A stencil printer 1 comprises a pair of cylindrical plate cylinders 16 and an impression cylinder 17 disposed at outer peripheral surfaces near to each other to stencil print by winding a stencil base paper 15 on the outer peripheral surface of the cylinder 16, pressing the cylinder 16 to the cylinder 17 side while rotating the cylinder 16 and the cylinder 17 and pressure-contacting the paper 15 with the paper 22 so that the cylinder 16 is detachably provided in the printer 1 and provided relatively movably to a conveying route of a printing medium 22, and memory means 301 to 303 provided at the cylinder 16 to store the relatively moving amount of the cylinder 16 to the route in the case of removing the cylinder 16 from the printer 1.