Patent ID: 8746309

Claim:
A position controller for flexible substrate, provided in a processing apparatus conveying a band-shaped flexible substrate in a longitudinal position, in a lateral direction and processing the substrate in a processing unit installed on a conveying path of the substrate, the position controller for flexible substrate comprising: a pair of sandwiching rollers sandwiching an upper edge of the substrate; a supporting mechanism supporting rotatably and capable of moving the pair of sandwiching rollers close to or away from each other; an urging device urging a pressing force to the pair of sandwiching rollers through the supporting mechanism; and a pressing force adjusting device adjusting the pressing force from the urging device, wherein each roller constituting the pair of sandwiching rollers is a conical roller having a circumferential surface inclined with respect to an axial direction, and is supported by the supporting mechanism such that a small diameter side of each conical roller is disposed at a center side of the substrate in the lateral direction and a rotation direction of a sandwiching surface of the substrate is directed in a same direction as a conveying direction of the substrate, and the pair of conical rollers is disposed so that the inclined circumferential surfaces thereof face each other to sandwich the upper edge of the substrate and convey in the conveying direction.