Dot matrix print head

Details Dot matrix print head Dot matrix print head

1979-07-30

1981-03-17

Sewell, Paul T.

Typewriting machines

Typing by other than type-face or type-die

Character formation by impact

101 9305, 400692, 400352, B41T 312

Patent

active

042564085

ABSTRACT:
There is disclosed herein a dot matrix tilting print head assembly in which the print head is rotatably mounted in a frame. A solenoid is provided for rotating the print head a controlled distance so that printing occurs between previously printed dots. A pin extending from the print head is positioned into a larger diameter hole in the frame for controlling the distance to be one half of the center-to-center distance between printed dots. This entails maintaining very low tolerances for the mechanically moving parts. In addition, there is provided support members for allowing the removal of the print head alone from the frame means.

REFERENCES:
patent: 2973237 (1961-02-01), Whiteley
patent: 3960255 (1976-06-01), Bisson
patent: 3983803 (1976-10-01), Thomas et al.
patent: 4059182 (1977-11-01), Gustafsson et al.
patent: 4134695 (1979-01-01), Randolph

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