Impact matrix print head solenoid assembly

Details Impact matrix print head solenoid assembly Impact matrix print head solenoid assembly

1975-08-06

1977-09-06

Rader, Ralph T.

Textiles: fiber preparation

101 9329, 101 9334, 335229, B41J 304

Patent

active

040462447

ABSTRACT:
A dot matrix impact print head uses a combination of cooperating forces produced by a deflected spring and dual electromagnetic fields to increase the striking force of a printing wire or needle element without adversely affecting operating frequency capabilities.

REFERENCES:
patent: 3070730 (1962-12-01), Gray et al.
patent: 3119940 (1964-01-01), Pettit et al.
patent: 3172352 (1965-03-01), Helms
patent: 3285166 (1966-11-01), Helms et al.
patent: 3460469 (1969-08-01), Brown et al.
patent: 3672482 (1972-06-01), Brvmbaugh et al.
patent: 3707122 (1972-12-01), Cargill
patent: 3787791 (1974-01-01), Borger et al.
patent: 3831729 (1974-08-01), Howard
patent: 3831730 (1974-08-01), Koeppe
patent: 3842734 (1974-10-01), Gomi

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