Patent ID: 6965364

Claim:
An exposure and modulation device for modulating an exposure intensity in an integrated digital screen-imaging system, comprising a light source; a light modulator that includes a plurality of rows of light-modulating cells; a device for imaging on said light modulator; a device for imaging said light modulator on a photo sensitive material; a device for producing a relative motion between said light modulator and said photo sensitive material, so that a direction of motion is substantially perpendicular to a direction of said rows of said light-modulating cells; a device for scrolling a data pattern through various columns of said light modulator at a speed so that the imaging of any data pattern is kept substantially stationary relative to said photosensitive material during said motion; and at least one device for stopping the scrolling procedure after a certain adjustable number of cells of said light modulator used for exposure of said photosensitive material, wherein said device for stopping the scrolling procedure is capable of stopping the scrolling procedure individually for every pixel in the row, whereby exposure times can be controlled individually for each pixel.