To provide a paper feeding device capable of corresponding to any type of rolled sheet and detecting remaining amount immediately after setting the rolled sheet.

A rotary switch 370 rotates by meshing of a gear A380 with a gear B390. The gear A380 is fixed to an abutting member 240, and the gear B390 is fixed to a bottom face 230 of a rolled sheet storage part. The rotary switch 370 has such a structure that defines a rotation angle of a rotary part uniformly by combination of voltage levels of signal outputs. When a paper feeding roller 4 rotates to deliver machine glazed paper, diameter of the rolled sheet is reduced, and the abutting member 240 and the gear A380 rise by elastic force of a spring 360. The rotary switch 370 is rotated by a series of operation, and the rotation angle is changed. Distance between the abutting member 240 and the bottom face 230 of the rolled sheet storage part can be detected from this rotation angle, and remaining amount of the rolled sheet can be detected.