Patent ID: 8777401
Filing Date: 2014-07-15
Classification: B41J,B65H

Abstract:
1. A recording medium transfer apparatus, comprising: an endless belt wherein a recording medium is places on a surface thereof; a plurality of transfer rollers which support the endless belt so that a part of the endless belt is to be flat and intermittently rotate the endless belt; a slide unit which freely moves back and forth between an initial position of a path which is the part of the endless belt that is flat and an end position that is at a downstream side in a rotational direction of the endless belt than the initial position; a driving device which returns the slide unit to the initial position from the end position; a linear encoder which detects a transfer amount of the slide unit; a calculation unit which calculates a transfer amount of the recoding medium from a detection result obtained by the linear encoder; and a control unit which controls a transfer amount of the recording medium to be transferred by the transfer rollers according to the calculated transfer amount, wherein the slide unit engages with the part of the endless belt that is flat at the initial position before rotational movement of the endless belt starts, moves following the rotational movement of the endless belt, releases an engagement with the endless belt when reaching the end position and is returned to the initial position by the driving device when the endless belt is at a stop after the engagement is released, and the calculation unit calculates the transfer amount of the recording medium according to the detection result obtained by the linear encoder during a movement of the slide unit reaching the end position from the initial position.