Patent ID: 7341220
Filing Date: 2008-03-11
Classification: B65H,G03C

Abstract:
1. A roll support member that is used for suspending in a packaging case a roll-form recording material wound around a core, the roll support member comprising: a four corner-cut square flange portion having a thickness; and an insertion portion that projects cylindrically from substantially the center of the flange portion and is inserted into one end of the core; the flange portion and the insertion portion being formed integrally; the side of the flange portion from which the insertion portion projects being a flat face; the side of the flange portion opposite to the flat face being provided with a plurality of concentric ribs forming in sequence a plurality of energy absorbing space zones disposed substantially concentrically on the flange portion; and the outer peripheral side of the flange portion having a height that is no greater than the height of the ribs wherein the flat face is an annular band shape, the outer periphery of the annular band-shaped flat face corresponds substantially to the outermost periphery of the roll-form recording material, and a channel is provided between the annular band-shaped flat face and the flange portion outer peripheral side.