Typewriting machines – Having typewriter-controlled reciprocable electromagnetic...
Patent
1986-12-10
1988-05-10
Wiecking, David
Typewriting machines
Having typewriter-controlled reciprocable electromagnetic...
400185, 400212, 400214, 400225, 4006971, B41J 2334, B41J 2936
Patent
active
047431288
ABSTRACT:
A single solenoid is connected to a ribbon feed mechanism which is selectively operable either to feed a print ribbon or to lift and feed an error correction tape. A print hammer solenoid is operable to condition the ribbon feed mechanism either for feeding the print ribbon or lifting and feeding the error correction tape. To feed the print ribbon, an electronic circuit energizes the print hammer solenoid before energizing the ribbon feed solenoid in response to depressing a character key. To lift and feed the error correction tape, the electronic circuit energizes the print hammer solenoid after energizing the ribbon feed solenoid in response to depressing a correction key.
REFERENCES:
patent: 4390293 (1983-06-01), Gubau et al.
patent: 4407594 (1983-10-01), Link
patent: 4411542 (1983-10-01), Wenderoth
patent: 4609297 (1986-09-01), Hubner et al.
Mueller Hans W.
Vought Kenneth D.
Greb Kenneth W.
Smith Corona Corporation
Wiecking David
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