PURPOSE: To provide a daylight reloadable light shielding cassette holding the roll of a photosensitive web and distributing it through a light shielding dispenser slot.

CONSTITUTION: This cassette is provided with a housing 26 and two side caps 29 and 30, and the housing has a hinge 34 on an opposite side to the dispenser slot forming a base 25 and the cover section 30 of the housing permitting the opening of the housing so that the new roll 21 of the photosensitive web may be loaded. The side caps are molded plastic parts, which are constituted of two sections 27, 31, and 28, 32 cooperating with the corresponding sections 25 and 30 of the housing. The respective sections of the side caps are fixed on the corresponding sections of the housing, and the sections of the side caps have superposing lips 55, 58 and 59 forming the labyrinth-state light shielding closed body of the closed end cap and the side caps have locks 53 and 54 keeping the cassette in a closed state.