Dot print head

Details Dot print head Dot print head

1989-05-26

1991-04-23

Burr, Edgar S.

Typewriting machines

Typing by other than type-face or type-die

Character formation by impact

101 9305, B41J 2235

Patent

active

050095285

ABSTRACT:
A dot print head comprising a yoke, a plurality of cores formed integrally with the yoke in an annular arrangement in the peripheral portion of the yoke, solenoid coils wound respectively around the cores, armatures fixedly provided respectively with styluses, an armature support supporting each armature at the middle portion thereof opposite to the corresponding core for swing motion, and an armature holding member disposed opposite to the yoke with a predetermined gap therebetween to hold the armatures on the armature support for swing motion. A plurality of joining parts are formed on the yoke on a line on which the cores are arranged, and a plurality of joining parts are formed on the armature holding member so as to be joined respectively to the connecting parts of the yoke in joining together the yoke and the armature holding member.

REFERENCES:
patent: 4230412 (1980-10-01), Hebert
patent: 4437775 (1984-03-01), Ochiai et al.
patent: 4537520 (1985-08-01), Ochiai et al.
patent: 4583871 (1986-04-01), Ochiai et al.
patent: 4594010 (1986-06-01), Jachno
patent: 4618277 (1986-10-01), Asano
patent: 4624589 (1986-11-01), Ochiai et al.
patent: 4634301 (1987-01-01), Sakaida et al.
patent: 4652158 (1987-03-01), Asano

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