Electron beam reading arrangements

Details Electron beam reading arrangements Electron beam reading arrangements

1975-07-11

1978-07-18

Habecker, Thomas B.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358300, H04N 100, H04N 128

Patent

active

041019350

ABSTRACT:
An electron beam is used for reading signals in the form of surface modulations on a thermoplastic recording. In order to improve the signal to noise ratio the thermoplastic recording is first charged using a flood beam source of electrons and the surface charge so produced repells scanning reading electrons which are then collected by a detector.

REFERENCES:
patent: 3181125 (1965-04-01), Vadopalas
patent: 3247493 (1966-04-01), Wolfe
patent: 3308444 (1967-03-01), Ting
patent: 3389382 (1968-06-01), Hart
patent: 3400382 (1968-09-01), Kurzweil

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