Patent ID: 6215547
Filing Date: 2001-04-10
Classification: B41J,G02B,G03B

Abstract:
A method of printing two-dimensional swaths of area onto a photosensitive media using at least one reflective liquid crystal spatial light modulator, the method comprising the steps of:imaging light from a light source comprising an array of light emitting diodes, wherein said light emitting diodes operate at said three or more wavelengths;providing said imaging light for a period of time which matches a media sensitivity to produce a proper exposure;sequentially illuminating an optics assembly comprising a first lenslet array, and a second lenslet array, which provide uniform illumination at a conjugate plane;passing said light from said optics assembly through a polarization beamsplitter element to isolate polarization states of said light;directing said polarized light to said spatial light modulator located at said conjugate image plane to create telecentric illumination at the spatial light modulator;providing image data to said spatial light modulator for a period of time which matches said media sensitivity; andimaging said light through a print lens assembly at the photosensitive media.