To decrease the number of the processes of inspecting the total number at the time of molding and postprocessing, to prevent a reduction in a working rate caused by clogging, etc., due to a remaining gate in an automatic injection molding device, further, to reduce the influence of the dust of the remaining gate, etc., in a film, and moreover to prevent a deterioration ion a function due to the abutting of the remaining gate, etc., by reducing the remainder is a gate.

This film cartridge is constituted of upper and lower resin shells which are bisected by a divided surface parallel with the axis of a shaft assembly on which a ratatobly loaded film is wound, the turning door of a film entrance formed by the upper and lower shells, a locking member which is turned-displaced to a state where the member restrains the rotation of the shaft assembly, by the turning of the turning door for closing the film entrance and the shaft assembly. The cartridge is assembled in such a manner that the locking member, the shaft assembly and the turning door are fitted in one shell and its is covered with the other shell, to be combined and fitted. For the components of the photographic film cartridge, thermoplastic resin is used and molded by injection molding and the diameter D is the hate of this injection molding is set in 0.4-0.8mm.