Thermal pen

Details Thermal pen Thermal pen

1979-08-30

1981-10-27

Hartary, Joseph W.

Recorders

Markers and/or driving means therefor

Stylus feature

346 76R, G01D 1510

Patent

active

042977142

ABSTRACT:
A thermal pen of thick film type comprises a thermal pen tip and a thermal pen tip holder connected to the thermal pen tip for holding the thermal pen tip. The thermal pen tip comprises a high resistance substrate formed in the form of a pen point, a heater element formed in the form of a thick film on the end of the pen point of the high resistance substrate and an electric conductor formed in the form of a thick film so as to connect to the heater element. The thermal pen tip is preferably provided with a heat-resistant protective coating to cover the end of the pen point. A heat- and wear-resistant heat-sensitive recording piece is preferably provided in a heat conductive relation to said heater element.

REFERENCES:
patent: 2474312 (1949-06-01), Halpern
patent: 3478191 (1969-04-01), Johnson
patent: 3699588 (1972-10-01), Warrington
patent: 3813677 (1974-05-01), Shimotsuma
patent: 4016572 (1977-04-01), Hubbard

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