Gravure printing methods and apparatus with rotary shutter

Details Gravure printing methods and apparatus with rotary shutter Gravure printing methods and apparatus with rotary shutter

1975-03-18

1976-10-12

Cook, Daryl W.

Telegraphy

Systems

Simplex-reversing periodic

178 66R, 346 76L, 101467, G11B 1100

Patent

active

039859533

ABSTRACT:
In a method of preparing a gravure printing member by excavating materials from the surface by a scanning laser beam or other energy beam, the path of the beam to the surface is periodically intercepted during the scanning by a rotary shutter, the position and speed of the rotary shutter and the relative movement of the scanning system and the surface of the printing member being such that the shutter shadow is substantially stationary relative to the surface of the printing member during its passage across the beam, the protected portions of the surface constituting the walls of the gravure cells.

REFERENCES:
patent: 2818465 (1957-12-01), Brink
patent: 3006238 (1961-10-01), Eberline
patent: 3455239 (1969-07-01), Smith
patent: 3636251 (1972-01-01), Daly
patent: 3742129 (1973-06-01), Roberts

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