Print hammer mechanism

Details Print hammer mechanism Print hammer mechanism

1983-04-08

1984-06-19

Burr, Edgar S.

Printing

Selective or progressive

Bed and platen machines

101 9334, 101 9329, 101 9348, B41J 930

Patent

active

044548095

ABSTRACT:
A print hammer mechanism 10 includes a plurality of parallel print hammers positioned for sliding movement within slots 20a-i, 22a-i in the walls 16, 18 of a frame 12. The selective energization of one of a plurality of magnets 61a-i draws the corresponding hammer 30a-i against a rotating roller 52. The roller 52 drives the print hammer from a rest position to a print position. At the print position, a head 40a-i on the selected hammer 30a-i forces a paper medium against a type die 64 with an ink ribbon 62 interposed. Return movement is provided by a coil spring 38a-i attached to the rearward end of the hammer 30a-i.

REFERENCES:
patent: 2897752 (1959-08-01), Malmros et al.
patent: 3152540 (1964-10-01), Pensavecchia et al.
patent: 3177803 (1965-04-01), Antonucci
patent: 3292531 (1966-12-01), Mutz
patent: 3335659 (1967-08-01), Schacht et al.
patent: 3795187 (1974-03-01), Babler
patent: 3929067 (1975-12-01), Nishikawa et al.
patent: 4109776 (1978-08-01), Elk et al.

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