Method and apparatus for direct color printing

Abstract From the Canadian patent

Abstract, A color printing system employing a large area pattern of controllable light sources, where the pattern includes rows that are aligned substantially with themovement of a print medium in relation to the light sources. All of the light sources in each row contribute to the exposure of each pixel in a corresponding row of the resulting color print. The large area pattern of light sources can berealized with a range of approaches from the use of a plurality of light sources to the use of a single light source coupled with an appropriate light modulator. Inone embodiment a liquid crystal light modulator was employed for each of the three primary colors.