Patent ID: 8167302
Filing Date: 2012-05-01
Classification: B65H

Abstract:
1. A paper inverting device for inverting a sheet of paper around an inversion axis by a predetermined inversion angle when the sheet is transferred from a first transport surface to a second transport surface, the paper inverting device comprising: a first transport device forming the first transport surface; a second transport device forming the second transport surface; the first transport device and the second transport device each including a plurality of transport belts moving on transport paths along a paper transport direction and a suction device for sucking the sheet on the transport belts through suction holes formed on the transport belts; a turn guide disposed in parallel with the inversion axis between the first transport device and the second transport device having curved transfer surfaces from inversion start points corresponding to the first transport surface to inversion end points corresponding to the second transport surface; and the suction device including a plurality of suction machines disposed along the paper transport direction and a suction force controller for individually controlling suction forces of the suction machines according to paper transport conditions; wherein the suction force controller sets the suction force of the suction machine closest to the inversion start points of the transfer surfaces stronger than the suction forces of the other suction machines in the first transport device.