Print head

Details Print head Print head

1985-03-25

1987-03-31

Sewell, Paul T.

Typewriting machines

Typing by other than type-face or type-die

Character formation by impact

101 9305, 335275, B41J 312

Patent

active

046539433

ABSTRACT:
Disclosed is a print head of a dot matrix printer in which an electromagnet assembly and a print wire assembly are mounted by means of a mounting assembly. The print wire assembly includes armature members radially arranged in a support base member which is provided at the rear end of a nose member for movably guiding print wires. These armature members face their corresponding electromagnetic cores of the electromagnet assembly with gaps therebetween, and are held in a rest position on the rear side by a backup member against the urging force of springs. In a mounted state, the backup member is positioned by a cap member of the mounting assembly. The posiiton of the backup member can be adjusted at the time of mounting, so that the gaps between the armature members and their corresponding electromagnetic cores are adjustable.

REFERENCES:
patent: 4051941 (1977-10-01), Hebert
patent: 4165940 (1979-08-01), Cacciola
patent: 4167343 (1979-09-01), Golobay
patent: 4244658 (1981-01-01), Mori
patent: 4260270 (1981-04-01), Cavallari
patent: 4349283 (1982-09-01), Sapitowicz
patent: 4367962 (1983-01-01), Gaboardi
patent: 4382701 (1983-05-01), Davenport
patent: 4447166 (1984-05-01), Ochiai
patent: 4502799 (1985-03-01), Weeks
patent: 4513496 (1985-04-01), Wang
patent: 4518269 (1985-05-01), Akazawa
patent: 4552064 (1985-11-01), Sanders

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