作者: William T. Plummer
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摘要: An electronic printing method by which originals are photographically reproduced exposing high-contrast copy material with an intensity modulated illumination source that coarsely scans the original while is sharply imaged a well-corrected optical system. The to compensate for original's tonal qualities and electronically shapes response of enhance reproduction. imaging system in conjunction assures high reproduction detail. enhances sharpness reduces time, memory computational needs otherwise required copies comparable quality.