Laser operated scanning and printing system

Details Laser operated scanning and printing system Laser operated scanning and printing system

1976-02-20

1977-10-18

Cardillo, Jr., Raymond F.

Dynamic magnetic information storage or retrieval

Recorder control of an external device

358283, 358286, 358296, 358298, H04N 128

Patent

active

040549283

ABSTRACT:
A scanning and printing system scans and digitizes graphical information for recording on magnetic tape and also prints graphical information previously stored in digital form on a magnetic tape. Scanning and printing is accomplished by directing a laser beam through a pinhole in an aperture plate and thence through a set of optics, which collimate the beam and scan it across the surface of a graphic medium. For operation as a printer the laser beam is addressed by an acousto-optic modulator, which is positioned between the laser and the aperture plate. The acousto-optic modulator causes a shifting of the laser beam in accordance with digitized data trains representing positive and negative areas in an image to be reproduced. The laser beam is normally blanked out by the aperture plate and is periodically shifted by the acoustic-optic modulator for direction through the pinhole.

REFERENCES:
patent: 3604846 (1971-09-01), Behane
patent: 3636251 (1972-01-01), Daly
patent: 3742129 (1971-07-01), Roberts
patent: 3806643 (1974-03-01), Russell
patent: 3811009 (1974-05-01), Fukumoto
patent: 3819854 (1974-06-01), Kolb

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