Exhaust system for pyrographic printer

Details Exhaust system for pyrographic printer Exhaust system for pyrographic printer

1976-09-13

1978-06-13

Lucas, Jay P.

Recorders

Printing, dotting, or punching marker

Ink transfer support or moving means

219216, B41M 500

Patent

active

040952401

ABSTRACT:
A pyrographic printer comprises an exhaust system having an elongated inlet and a bifurcated throat. The inlet is adjacent to and substantially coextensive with the path of travel for the stylus, and the throat is configured to define a main passage which leads away from the inlet and a branch passage which loops back toward the inlet. To increase the vacuum drawn in the immediate proximity of the stylus, the input impedance of the exhaust system is selectively reduced in that region. For that purpose, the stylus carriage carries a baffle which extends into the throat to more or less seal a stylus aligned segment of the branch passage.

REFERENCES:
patent: 2739029 (1956-03-01), Pollard
patent: 2860180 (1958-11-01), McConnell
patent: 3436785 (1969-04-01), Kantor

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