Time shared shifting print hammer assembly

Details Time shared shifting print hammer assembly Time shared shifting print hammer assembly

1978-10-23

1981-02-03

Coven, Edward M.

Printing

Selective or progressive

Bed and platen machines

101 9334, 101 9348, B41J 912

Patent

active

042481481

ABSTRACT:
A plurality of print hammers are mounted on a horizontally movable carriage and adapted to scan a plurality of column positions of an impact printer. Each print hammer is provided with an energizible electrical coil which moves horizontally with the print hammers in the scan direction. The energizible electric coils on the print hammers cooperate with a fixed magnetic field provided by a pair of fixed bar magnets which extend beyond the distance scanned by the energizible coils on the print hammers.

REFERENCES:
patent: 3606834 (1971-09-01), Nyman et al.
patent: 3911814 (1975-10-01), Helms et al.
patent: 3924528 (1975-12-01), Ludin
patent: 3971311 (1976-07-01), Deproux
patent: 3983806 (1976-10-01), Ishi
patent: 4014258 (1977-03-01), Wassermann
Wieselman, "Printer Technology and its Future," Data Products Corporation Publication, before May 1975.

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