Printer apparatus using electromagnet

Details Printer apparatus using electromagnet Printer apparatus using electromagnet

1980-11-06

1983-06-07

Heinz, A. J.

Printing

Selective or progressive

Bed and platen machines

101 9329, B41J 304, B41J 936

Patent

active

043865658

ABSTRACT:
A printer of the needle or hammer impact type prints by release of spring-stored energy, driving the needle or hammer against a platen or character ring. A rotating cam restores the printing member to a locked standby condition after impact, and an electromagnet attracts a moveable core to allow release of the printing member at selected times for printing. The gap between the moveable and fixed cores of the electromagnet is periodically closed mechanically and electrical energization of the electromagnet only maintains the attracted state of the fixed and moveable cores.

REFERENCES:
patent: 3049990 (1960-12-01), Brown et al.
patent: 3188946 (1965-06-01), Schacht
patent: 3335659 (1967-07-01), Schacht et al.
patent: 3838638 (1974-10-01), Clary
patent: 3977509 (1976-08-01), Leersnijder
patent: 4077505 (1978-03-01), Giolitti

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