Disc film
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Disc is a film format used for still photography. The image format is fixed at 8 x 10 mm.
The film is in the form of a flat disc, and is fully housed in a plastic cartridge. There are 15 exposures, the disc being rotated 24° between each image. The camera is very simple to load and unload. The cartridge has a built-in dark slide to prevent stray light reaching the film when the cartridge is removed. Because the film is rotated on a disc instead of by spools, the cartridge is very thin. The camera is typically thin as well.
The format was introduced by Kodak in 1982, presumably as a replacement for their miniature Instamatic 110 format. This format had the advantage of potential sharpness, other films coming out of cassettes would relax causing the first frame to be unsharp. Disc film is one thick sheet of estar, every part of the negative was flat, it was not particularly successful, pehaps because the negative size was only 10mm by 17 mm. It was discontinued in 1998.
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de:Kodak Disc