Medium conveying device and image forming apparatus

A medium conveying apparatus comprising:

• a driving roller driven to be rotated around an axis;
• a plurality of driven rollers provided at intervals, driven by the driving roller to be rotated around an axis and to convey a medium held between the driving roller and the driven rollers;
• a support part which supports the driven rollers so as to be rotatable around the axis;
• a plurality of upstream restriction parts provided in the support part between the adjacent driven rollers;
• and
• a plurality of downstream restriction parts provided in the support part between the adjacent driven rollers, the support part includes:
• a roller holder which houses the driven rollers;
• a plurality of swinging arms which are swingably supported by the roller holder via a swinging shaft and rotatably supports the driven rollers on a tip side extended from the swinging shaft;
• and
• a plurality of biasing members which bias the swinging arms to the driving roller, and
• one of the upstream restriction parts and the downstream restriction parts are provided in the roller holder, and the other of the upstream restriction parts and the downstream restriction parts are provided in the swinging arms, wherein
• the upstream restriction parts and the downstream restriction parts are arranged on an upstream side and a downstream side in a conveyance direction of the medium across a rotational center of the driven rollers respectively, and
• when the driven rollers are tilted with respect to the conveyance direction, at least one of the upstream restriction parts and the downstream restriction parts comes into contact with side surfaces of the driven rollers to restrict tilting of the driven rollers.