Dot printer head with reduced magnetic interference

Details Dot printer head with reduced magnetic interference Dot printer head with reduced magnetic interference

1983-11-15

1985-08-27

Sewell, Paul T.

Typewriting machines

Typing by other than type-face or type-die

Character formation by impact

101 9305, 335281, B41J 312

Patent

active

045375208

ABSTRACT:
The present invention provides a dot printer head which includes a plurality of cores each having a mounting portion which is contacted with a core holding face of a permanent magnet and a post-like projection for mounting an electromagnetic coil thereon. The height of the mounting portion is made relatively small while the area of the mounting portion is made larger than the area of the cross section of the post-like projection. Due to this arrangement, sufficient magnetic fluxes are provided to the cores and magnetic interference between adjacent cores is reduced.

REFERENCES:
patent: 4233894 (1980-11-01), Barrus et al.
IBM Tech. Disc. Bulletin, by G. Engel et al, vol. 15, No. 3, Aug., 1972, p. 916, 101-93.48.

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