An x-ray cassette (1) to accommodate photosensitive material in sheet form, especially a phosphor film (2), having a cover part (1b), a bottom part (1a) and side parts (1c) joined thereto, the cover part, bottom part and side parts being made of plastic and closing off the cassette interior in a light-tight manner. The cassette has at least one electrically conductive element (6) which covers at least 20% of the surface of the cassette (1).