| 摘要 |
<p>PROBLEM TO BE SOLVED: To control a shift of a belt in the width direction with high accuracy by simple constitution without changing belt tensile force. SOLUTION: A moving member 20 to which the shaft end of a roller shaft 3A is fixed is moved along a support member 19C arranged in the direction perpendicular to a bisector of a belt contact angle given by a first contact point 1a at which a transfer belt 1 contacts with a steering roller 3, a second contact point 1b at which the transfer belt 1 separates from the steering roller 3 and the shaft center O of the roller 3.</p> |
