The Single 8 cartridge was designed to use the camera's film gate to hold the film in place during exposure, in contrast to the Kodak system which had a plastic pressure plate built into the cartridge.
The Single 8 cartridge was designed to use the camera's film gate to hold the film in place during exposure. This was in contrast to the Kodak system. This contrast to the Kodak system had a plastic pressure plate. This plastic pressure plate was built into the cartridge.