Method and apparatus for exposing photosensitive media with multiple light sources.

摘要

A multi-beam color exposure system which comprises a plurality of mono-color light sources (LED's or laser diodes) arranged to emit a plurality of light beams which are focused to form a plurality of writing spots on a photosensitive material. The light sources are moved with respect to the photosensitive material in a fast scan direction and in a slow scan direction. The light sources form a plurality of writing spots on the photosensitive material as a plurality of substantially parallel lines of the writing spots, with the lines of individual images disposed substantially parallel to the fast scan direction. The light sources forming the writing spots in a single line produce substantially the same color light, and the light sources forming the writing spots in at least one of the lines producing a different color light than the color of the light produced by the light sources in the other lines. Each of the light sources is provided with an information signal to generate the writing spots on the photosensitive material, whereby each information signal for a given color is provided sequentially to each mono-color light source in that column as the writing spots are scanned onto the photosensitive material to thereby repeat each signal by each mono-color light source in that column onto substantially the same image location on the photosensitive material. <IMAGE>