Dot printer head

Details Dot printer head Dot printer head

1985-03-15

1986-11-25

Pearson, Charles

Typewriting machines

Typing by other than type-face or type-die

Character formation by impact

101 9305, B41J 304

Patent

active

046245898

ABSTRACT:
A dot printer head in which each radially directed armature is urged to pivot about its primary fulcrum in the return direction by a metallic return spring and is urged to pivot in the opposite angular direction by a metallic holding spring. The metallic return springs and metallic holding springs are sized and positioned so that the metallic holding springs exert a torque urging the radially directed armature to pivot in the actuating direction that is lower than the torque urging the armatures to pivot in the return direction.

REFERENCES:
patent: 4230038 (1980-10-01), Hebert
patent: 4230412 (1980-10-01), Hebert
patent: 4453840 (1984-06-01), Hodne

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