Disk-shaped film unit and hub cartridge assembly

Abstract From the Canadian patent

A photographic film unit comprising a preferably diskshaped photographic film sheet that is attached to a central hub and which may be incorporated in a compact cartridge assembly for acceptance by a cooperating camera. The film disk defines an array of photographic imaging areas effectively ringing the hub for sequential positioning at a cartridge exposure window for exposure to scene light by the camera. Incorporated structural features facilitate manipulation of the film unit not only during use in the camera but also during post-exposure operations such as photographic processing printing and viewing.