Transporting apparatus and method, and image forming apparatus

Abstract

A paper transporting apparatus transporting continuous paper to a paper processing part that performs designated processing on the continuous paper includes a drive roller that transports the continuous paper in a forward direction with respect to the paper processing part and a direction opposite to the forward direction by a frictional force, a pre-centering mechanism, disposed upstream of the drive roller with respect to the forward direction, that regulates a position of the continuous paper with respect to the forward direction and a direction orthogonal to the forward direction by abutting against the continuous paper, and a tension increasing mechanism, disposed upstream of the pre-centering mechanism with respect to the forward direction, that increases tension on the continuous paper.

1 . A paper transporting apparatus transporting continuous paper to a paper processing part that performs designated processing on the continuous paper, the paper transporting apparatus comprising:
 a drive roller that transports the continuous paper to the paper processing part by a frictional force; and   a skew roller, disposed upstream of the drive roller with respect to a transport direction toward the paper processing part from the drive roller, and on the skew by a variable angle with respect to the transport direction, that energizes the continuous paper while changing the angle so as to converge swing of the continuous paper with respect to a direction orthogonal to the transport direction to zero,   wherein a distance between the drive roller and the designated position is greater than a distance between the paper processing part and the drive roller.   
   
   
       2 . The paper transporting apparatus according to  claim 1 , further including:
 a detection part that detects the position of the continuous paper with respect to the orthogonal direction; and,   a control part that controls change of the designated angle of the skew roller based on a detection result of the detection part.   
   
   
       3 . An image forming apparatus comprising:
 an image forming part that forms a designated image on continuous paper;   a drive roller that transports the continuous paper to the image forming part by a frictional force; and   a skew roller, disposed upstream of the drive roller with respect to a transport direction, and on the skew by a designated angle with respect to the transport direction, that energizes the continuous paper so that the continuous paper is in a designated position with respect to a direction orthogonal to the transport direction, the designated angle being set variable,   wherein a distance between the drive roller and the designated position is greater than a distance between the paper processing part and the drive roller.