Electron beam disc recorder

Details Electron beam disc recorder Electron beam disc recorder

1976-06-30

1978-02-14

Canney, Vincent P.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

1791001B, 1791003V, 358129, 346151, 346161, H04N 576

Patent

active

040743136

ABSTRACT:
A disc master, coated with an electron sensitive material, is secured to a turntable which is rotatably mounted within a vacuum chamber. A recorder column protrudes into the vacuum chamber for directing a signal representative electron beam toward the disc master. The recorder column is mounted on a carriage for translational motion along a path radially disposed with respect to the center of rotation of the turntable in correlation with the rotational motion of the turntable. A column set-up stage is mounted within the vacuum chamber, adjacent the outside perimeter of a turntable supported disc master, and in registration with the coated surface of the disc master. The recorder column is aligned with the set-up stage for determining beam characteristics, such as: beam current, shape, quality, etc., and for properly focusing the electron beam.

REFERENCES:
patent: 3120991 (1964-02-01), Newberry
patent: 3423524 (1969-01-01), Bradford
patent: 3821488 (1974-06-01), Plows
patent: 3825323 (1974-07-01), Landwer
patent: 3842194 (1974-10-01), Clemens

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