Method of engraving printing plates of forms by means of energy

Details Method of engraving printing plates of forms by means of energy Method of engraving printing plates of forms by means of energy

1975-07-31

1978-08-22

Kimlin, Edward C.

Gas separation: apparatus

Electric field separation apparatus

Electrode cleaner, apparatus part flusher, discharger, or...

96 27R, 96 27H, 96 36, 96 383, 358299, 156634, 156643, 427 53, 346 76L, G03C 500, G03C 504

Patent

active

041086597

ABSTRACT:
A process for engraving printing surfaces with unmodulated energy beams by interposing a variable reflectivity mask between the energy beam source and the printing surface. The local reflectivity of the mask varies in correspondence with the tone graduation of the original to be printed and may be formed by conventional photographic or the like techniques directly on the printing surface or on a substrate carrier through which the energy beam is passable.

REFERENCES:
patent: 3567447 (1971-03-01), Chand
patent: 3834801 (1974-09-01), Schreckendgust

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