Patent ID: 8033496

Claim:
A rolled body holder, comprising: a center shaft member; a cam member which is provided along a longitudinal direction of the center shaft member so as to be capable of advancing and retracting, and which has a cam surface with a radially varying height; and a plurality of segments each including a follower part mounted so as to be brought into contact with the cam surface and relatively slidable along the cam surface of the cam member, an outer surface part which forms a part of a cylindrical body covering the center shaft member and the cam member, and a plurality of projections formed on the outer surface part, the plurality of segments being incapable of moving in the longitudinal direction of the center shaft member and being capable of moving in a radial direction of the cylindrical body with relative sliding of the follower part along the cam surface; a flange for holding the center shaft member and the cam member so that the cam member can move within a predetermined range in the longitudinal direction of the center shaft member, and for holding the plurality of segments so that the outer surface parts form the cylindrical body covering the center shaft member and the cam member and so that each of the segments is incapable of moving in the longitudinal direction of the center shaft member and each of the segments is capable of moving within the predetermined range in the radial direction of the cylindrical body, wherein the plurality of segments each include a plate spring part joined to the outer surface part, for urging the segment from a position where the segment extends in the radial direction toward a position where the segment retracts in the radial direction.