Framing pulse generator for facsimile recorder

Details Framing pulse generator for facsimile recorder Framing pulse generator for facsimile recorder

1976-12-29

1978-08-01

Hartary, Joseph W.

Recorders

Markers and/or driving means therefor

Stylus feature

G01D 1506

Patent

active

041046447

ABSTRACT:
A facsimile recorder using an endless scanning belt which carries styli for electrically marking graphic signals on a recording web has a pulley for the belt at the finish of a scan across the web. The belt includes conductive means connected to or integral with the stylus which contacts the pulley as the stylus passes over the pulley. During the pass the stylus touches a contact adjacent the pulley thereby completing a framing pulse generating circuit through the pulley and contact. This recorder framing pulse is compared with a synchronization (sync) pulse of an incoming facsimile signal and used to synchronize the scanning belt with the signal.

REFERENCES:
patent: 2883642 (1959-04-01), Kietz
patent: 3369250 (1968-02-01), Gifft

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