Photographic 120-size film roll

Abstract

An improvement of a photographic film roll composed of a spool which has a spool core having a slit therein and a flange at both ends of the spool core and a photographic 120-size film which is placed and fixed on a continuous light-shielding backing paper in which one end of the backing paper is inserted into the slit of the spool and other portion of the backing paper is wound on the spool to form multiple convolutions, resides in that the backing paper has at the center in its longitudinal direction a width less than the distance between the two flanges measured at the position of ½ of height of the flanges and has two wide areas of at least 10 cm long one of which is within 50 cm area measured from its one end and another of which is within 50 cm area measured from its another end, the width of each wide area being larger than the distance between the two flanges measured at the tops of the flanges.

Dependencies are inferred from the claim text.