Solenoid actuated pivotal printer hammer mechanism

Details Solenoid actuated pivotal printer hammer mechanism Solenoid actuated pivotal printer hammer mechanism

1984-10-09

1985-06-25

Burr, Edgar S.

Typewriting machines

Including type-set-assemblage mounted on carrier and...

Including type-faces movable relative to type-face-carrier

4001572, 400166, 101 9348, B41J 108

Patent

active

045250863

ABSTRACT:
A print mechanism is described which has a constant current driven solenoid acting against an arch-shaped hammer to power the hammer through an arc of powered flight followed by an arc of free flight. The solenoid/hammer engagement point removes the solenoid to a position which does not obstruct print line visibility and the hammer rest position is withdrawn to improve print line visibility.

REFERENCES:
patent: 3651916 (1972-03-01), Becchi
patent: 3805941 (1974-04-01), Cattaneo
patent: 4232975 (1980-11-01), Kane
patent: 4327639 (1982-05-01), Crystal et al.
patent: 4406223 (1983-09-01), Curley
IBM Technical Disclosure Bulletin, "Uniform Impact Impression," by Bear, vol. 8, No. 4, 1-62, pp. 2-3.

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