Abstract: A film cassette comprising an outer case containing monosheets therein and having a front wall defining an opening, through which said monosheets may be exposed, an end wall defining a removal passage, through which said exposed monosheets may pass, and another end wall defining an insertion passage, and a lightproof protective board, which is locatable in a foremost position in said cassette to protect said monosheets from exposure to light through said front opening, is removable from said cassette through said removal passage, and is insertable into said foremost position through said insertion passage.

Abstract: A film cassette for containing film-sheets comprising a front frame mountable in a complementary camera portion, and forming a generally off-centre opening, a rear frame forming a generally off-centre opening, walls integrally formed with said rear frame and extending to said front frame, a wall integrally formed with said rear frame and extending to the proximity of said front frame, whereby there is formed a passage for removal of film-sheets from said cassette, a light-proof cover sealing said rear frame opening and extending around film-sheets in said cassette, and a light-proof sheet sealing said front frame opening, whereby film-sheets in said cassette may be advanced by a pressure means entering said rear frame opening or mounted on said rear frame and acting through said light-proof cover.