Preventing armature rebounding in matrix print heads

Details Preventing armature rebounding in matrix print heads Preventing armature rebounding in matrix print heads

1986-11-17

1989-04-18

Burr, Edgar S.

Typewriting machines

Typing by other than type-face or type-die

Character formation by impact

101 9305, B41J 312

Patent

active

048221872

ABSTRACT:
Rebounding of armatures driving print needles in a matrix print head, the armatures being arranged in a star pattern, is prevented by having them abutting against a ring, preferably of fluoro rubber having hardness from 60 to 90 shore A and being bonded to a central sleeve, preferably made of aluminum, by two component adhesive that can withstand at least 100 degrees C, preferably epoxy resin and a modified amide.

REFERENCES:
patent: 3345942 (1967-10-01), Meltz
patent: 3896918 (1975-07-01), Schneider
patent: 3994218 (1976-11-01), Riley
patent: 4049107 (1977-09-01), Murat
patent: 4051941 (1977-10-01), Hebert
patent: 4064799 (1977-12-01), Babler
patent: 4209260 (1980-06-01), Jung
patent: 4230412 (1980-10-01), Hebert
patent: 4298656 (1981-11-01), Mendelsohn
patent: 4613243 (1986-09-01), Rossi et al.
patent: 4647236 (1987-03-01), Moriya et al.
patent: 4746130 (1988-05-01), Abele

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