To rationally constitute a noncontact transmission mechanism in which a pair of carrying rollers are synchronously driven.

A noncontact transmission mechanism T is constituted by providing a rotary transmission body W to a spindle 13 that integrally rotates with a drive roller 11, and a spindle 14 of a press-contact roller 12 which can be switched between the state where it is press-contacted to the drive roller 11 and the state where it is away from the drive roller 11. A region magnetized in N-pole and a region magnetized in S-pole are alternately formed as tilted against an axial center on the outer peripheral surface of one rotary transmission body W, while the magnetized regions are formed as tilted in opposite direction on the outer peripheral surface of the other rotary transmission body W.