Striker mechanism for a high speed serial printer

Details Striker mechanism for a high speed serial printer Striker mechanism for a high speed serial printer

1981-05-28

1984-02-14

Burr, Edgar S.

Printing

Selective or progressive

Bed and platen machines

101 9302, 4001572, 400167, 400686, B41J 942

Patent

active

044309368

ABSTRACT:
A striker mechanism for a high speed serial printer, for example of the daisy wheel type, includes a hammer movable axially towards the platen under the action of an electro-magnet whose armature carries a striker, and against the action of a return spring. Two lubricating felt pads are arranged on opposite sides with respect to the striker hammer and are pressed against the hammer by the grip of a spring for damping the hammer vibrations during the printing cycle. The armature comprises a pivoted lever which is damped with respect to its pivot by means of a felt washer and the lever is damped on return by a helical spring on a rod with a reduced diameter center section where it is struck by a pad on the lever.

REFERENCES:
patent: 884347 (1908-04-01), Yetman
patent: 1510563 (1924-10-01), Seib
patent: 1798450 (1931-03-01), Brugger
patent: 3152540 (1964-10-01), Pensavecchia et al.
patent: 3280956 (1966-10-01), Koenen
patent: 3426675 (1969-02-01), Dalton
patent: 3889793 (1975-06-01), Cattaneo
patent: 3994218 (1976-11-01), Riley
patent: 4023663 (1977-05-01), Engler
patent: 4062285 (1977-12-01), Deetz et al.
patent: 4084680 (1978-04-01), Deetz
patent: 4308794 (1982-01-01), Adamoli et al.
IBM Technical Disclosure Bulletin, "Impact Printer Hammer Damping System", vol. 22, No. 8B, Jan. 1980, p. 3498, Hall et al.

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