Patent ID: 6726199
Filing Date: 2004-04-27
Classification: B65H

Abstract:
A switchback device comprising:a conveying path to continuously convey a plurality of paper-like materials; a switchback portion to receive the paper-like material conveyed on the conveying path in a nip, clamp the paper-like material, decelerate and stop the paper-like material in the clamping state, then accelerate in an opposite direction, send onto the conveying path, thereby invert a conveying direction of the paper-like material; and a controller to keep the paper-like material stopped in the switchback portion for a time decided depending on a length of the paper-like material to be conveyed to the switchback portion in the conveying direction and control an inversion operation for the paper-like material by the switchback portion so as to send out all paper-like materials from the switchback portion at a same conveying pitch as that before inversion.