Patent ID: 7823825

Claim:
A roll medium supporting apparatus comprising: a base body portion to be inserted into a hollow shaft portion of a rolled medium; a plurality of contact supporting portions provided circumferentially of the base body portion so as to be capable of being displaced radially of the hollow shaft portion, having a plurality of predetermined positions within the displaceable range, and coming into contact with the inner peripheral surface of the hollow shaft portion and supporting the same; and a stabilizing mechanism configured to stabilize the contact supporting portions at the plurality of predetermined positions, wherein the stabilizing mechanism comprises a lever member configured to displace the plurality of contact supporting portions in the radial direction, an urging unit configured to urge the lever member in one direction of the direction of rotation of the lever member, and an engaging portion being capable of engaging the lever member when the lever member is positioned at a position other than the downstream end in the urging direction of the urging unit within the rotatable range of the lever member and when the contact supporting portions are located at the predetermined positions.