X-RAY SHEET FILM CASSETTE

PURPOSE: To prevent a frame from slipping off a sandwich plate by not only extending at least one of outside plate parts of a plate beyond the middle plate part but also projecting it inward so as to form a web. CONSTITUTION: A plate 1a provided with a web 1e in the edge is provided in a cassette, and the plate 1a is connected to lower cassette parts 1 by welding or junction. The plate 1a has hard foam parts 1d placed between carbon fiber plate parts 1c, and one or two carbon fiber plate parts 1c are extended to the front of the hard foam plate 1d at least in one edge, and carbon fiber plate parts 1c extended to the front of the hard foam plate 1d are bent upward or in other directions toward the inside of the X-ray sheet film cassette. Consequently, the surface for adhesion or welding is enlarged by the projecting web 1e.