Analog chart recorder employing thermal printing means

Details Analog chart recorder employing thermal printing means Analog chart recorder employing thermal printing means

1976-12-03

1977-11-01

Miller, Jr., George H.

Recorders

Thermal recording

219216, 338217, G01D 1510, H05B 320, H01C 308

Patent

active

040568237

ABSTRACT:
An analog chart recorder is provided having a heater assembly which includes a tapered, electrically resistive element that develops a non-uniform temperature profile on electrical energization along its length. A substrate is provided under the resistive film which is in thermal contact with the film. A heat sink in thermal contact with the substrate provides that the temperature distribution will achieve steady state. Means are provided for advancing a heat sensitive medium past and in contact with the heater assembly thus providing the analog chart recorder.

REFERENCES:
patent: 2005108 (1935-06-01), Pudelko
patent: 2653126 (1953-09-01), Greig
patent: 2662803 (1953-12-01), Schwartz
patent: 3377599 (1968-04-01), Reis
patent: 3506804 (1970-04-01), Schippers et al.
patent: 3921119 (1975-11-01), Caddock
patent: 4006414 (1977-02-01), Parker

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