Method for checking printing form surfaces engraved by means of

Details Method for checking printing form surfaces engraved by means of Method for checking printing form surfaces engraved by means of

1983-11-03

1985-10-22

Albritton, C. L.

Electric heating

Metal heating

By arc

219121EJ, 219121EV, 219121EY, 219121EP, B23K 1500

Patent

active

045490678

ABSTRACT:
An electron beam generator designed for engraving surfaces of printing form cylinders is switched to microscope operation during engraving pauses in order to make engraved cups visible immediately and without additional auxiliary equipment. During microscope operation, deflection parameters and an intensity of an electron beam produced by the electron beam generator are changed for appropriate scanning. An image signal is acquired by detecting secondary electrons generated by the beam interacting with the cups in the printing form surface.

REFERENCES:
patent: 3246079 (1966-04-01), Teucher
patent: 3404254 (1968-10-01), Jones
patent: 4041311 (1977-08-01), Martin
patent: 4460827 (1984-07-01), Onoguchi et al.
"Raster-Elektronenmikroskopie" by L. Reimer and G. Pfefferkorn, Springer-Verlag, Berlin, Heidelberg, New York, 1977.

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