Film cassette with removable light trap

摘要

In a film cassette, a cartridge shell has respective sections that are asssembled together to define an internal film chamber and a film passageway leading out of the chamber. A light-trapping material is located in the passageway to prevent ambient light from entering the chamber. According to the invention, at least one of the shell sections has a frame device hingedly connected to the one section for folding against the one section to secure the light-trapping material in place and for unfolding to release the light-trapping material to permit it to be removed.