PURPOSE: To improve recording density, to easily reproduce data, and to obtain high tone quality by providing a data track where digital data different from each other are optically and multiply recorded in respective photosensitive layers.

CONSTITUTION: The device is constituted of a signal source means 200 outputting the digital data, a separation means 201 separating the digital data to three channels of digital data, an exposure control means 202 radiating light having the photosensitive wavelength of the 1st photosensitive layer, the light having the photosensitive wavelength of the 2nd photosensitive layer, and the light having the photosensitive wavelength of the 3rd photosensitive layer in accordance with three channels of digital data, a lens 203 forming the image of each color light from a color light output means 202, and a film driving part 204 allowing the negative film 100 to travel at fixed speed. The negative film 100 is the color negative film having the photosensitive layer of three-layer structure whose photosensitive wavelength is different from each other. Three channels of digital data are independently recorded in the respective photosensitive layers on the digital sound track 3 of the negative film 100.