Patent ID: 7603953

Claim:
A conveying apparatus comprising: a traveling unit which runs; a winding roller which is supported by the traveling unit; a belt which is wound on the winding roller so as to be unwound and wound by the winding roller; a pulley which has a peripheral surface guiding the belt and a diameter smaller than the diameter of the winding roller; and the pulley having no flange on both ends thereof; a belt positioning guide which is provided below the pulley and guides both edges of the belt in the width direction thereof so that the belt is positioned in the width direction; and a support unit which is attached to the belt and supports a conveyed object, wherein the belt positioning guide comprises a pair of positioning rollers holding the belt from a left side and a right side of the belt; the pair of the positioning rollers comprising recessed grooves configured to engage with the belt from the left side and right side of the belt; such that each recessed groove is in contact with both thick-directional corners in a side edge of the belt in each one of the pair of the rollers, and a section of the groove has an arc-like or V-like shape, and a surface portion of the belt positioning guide being in contact with the belt is composed of a synthetic resin.