Dot matrix print head

Details Dot matrix print head Dot matrix print head

1987-07-28

1988-10-18

Sewell, Paul T.

Typewriting machines

Typing by other than type-face or type-die

Character formation by impact

400719, B41J 2900

Patent

active

047782935

ABSTRACT:
A dot matrix print head has a temperature sensor for detecting the temperature of the print head itself. When the detected temperature exceeds a preset temperature, the temperature sensor produces and output signal for stopping or slowing down the dot matrix print head so that its temperature may be lowered. The temperature sensor is accommodated in a substantially central hole of a radial member mounted in a heat conductor body and having a plurality of circumferentially spaced heat conducting arms with their radially outer ends held intimately against the radially inner surfaces of driver or demagnetizing coils which actuate dot pins. The heat conducting arms can quickly and accurately conduct the heat from the coils to the temperature sensor.

REFERENCES:
patent: 4629343 (1986-12-01), Bernardis

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