Typewriting machines – Typing by other than type-face or type-die – Character formation by impact
Patent
1980-03-10
1982-03-23
Sewell, Paul T.
Typewriting machines
Typing by other than type-face or type-die
Character formation by impact
101 9305, B41J 312
Patent
active
043209815
ABSTRACT:
An improved wire matrix ballistic impact printhead apparatus including a plurality of engaging structures for maintaining the armatures of a like plurality of electromagnetic actuators in proper positional alignment with the associated print style, for allowing individual adjustment of armatures to optimize printhead operation, for preloading the armatures with a force that will return them to their original position after the printing operation, and for damping vibrations at printhead operating frequencies.
REFERENCES:
patent: 3842955 (1974-10-01), Iwasaki
patent: 3893220 (1975-07-01), Bittner
patent: 4004673 (1977-01-01), Burzlaff et al.
patent: 4117435 (1978-09-01), Hishida et al.
patent: 4208138 (1980-06-01), Volke et al.
Davis Wilbern F.
Harrison Michael
Data General Corporation
Dulaney Robert
Sewell Paul T.
Wall Joel
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