Apparatus for laser-discharge imaging including beam-guiding ass

Incremental printing of symbolic information – Light or beam marking apparatus or processes – Scan of light

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347211, 359811, G03B 2100

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active

058121790

ABSTRACT:
Laser guiding and focusing apparatus for imaging lithographic printing members responsive to the output of laser devices. Radiation passes through at least one discrete layer of a printing member and ablates one or more underlying layers, resulting in an imagewise pattern of features on the printing member. The radiation is obtained from a laser diode and its dispersion reduced to produce an image spot with maximum depth-of-focus tolerance.

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