Non-linear, multi-speed, bi-directional facsimile subscan drive

Details Non-linear, multi-speed, bi-directional facsimile subscan drive Non-linear, multi-speed, bi-directional facsimile subscan drive

1977-09-15

1981-07-21

Orsino, Jr., Joseph A.

Facsimile and static presentation processing

Facsimile

Recording apparatus

346139A, 358285, H04N 106

Patent

active

042801451

ABSTRACT:
A bi-directional subscan drive control for a drum-type facsimile machine utilizing a single, bi-directional, electrically controlled stepping motor for driving the scan head of the facsimile machine in one direction at any of a plurality of possible rates during a scanning operation and for driving the scan head in the opposite direction at a much higher rate upon completion of the scanning operation. The stepping motor is operated to provide at last two steps for each revolution of the drum when operated in the one direction.

REFERENCES:
patent: 3436474 (1969-04-01), Saeger et al.
patent: 3441946 (1969-04-01), Rudy
patent: 3655914 (1972-04-01), Gifft et al.
patent: 3715498 (1973-02-01), Haynes
patent: 3735040 (1973-05-01), Punt et al.
patent: 3781902 (1973-12-01), Shim et al.
patent: 3938191 (1976-02-01), Jarmy
patent: 4028732 (1977-06-01), Salter et al.
patent: 4041454 (1977-08-01), Shepard et al.

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