Printing devices or heads for printers or the like and a process

Details Printing devices or heads for printers or the like and a process Printing devices or heads for printers or the like and a process

1975-10-03

1977-09-20

Rader, Ralph T.

Textiles: fiber preparation

101 9305, 335273, B41J 304

Patent

active

040491072

ABSTRACT:
The invention concerns a printing device or head for a printer or the like nd to a process of making same. The device comprises a plurality of needles each having an electro-magnet and a metal plate associated therewith, a selected needle being displaceable against an information support upon energization of the associated electro-magnet. The electro-magnets are supported in a base. In accordance with the invention each electro-magnet includes a U-shaped magnetic circuit, the base including housings for magnetic circuits. A surrounding, insulating material is disposed between the arms of the magnetic circuit and around the windings of the electro-magnets.

REFERENCES:
patent: 3584575 (1971-06-01), Distl
patent: 3820643 (1974-06-01), Priebs et al.
patent: 3828908 (1974-08-01), Schneider
patent: 3842955 (1974-10-01), Iwasaki
patent: 3889793 (1975-06-01), Cattaned
patent: 3896918 (1975-07-01), Schneider
patent: 3929214 (1975-12-01), Hebert

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