Unitary spring armature for a dot matrix printer

Details Unitary spring armature for a dot matrix printer Unitary spring armature for a dot matrix printer

1985-09-25

1988-09-20

Wiecking, David

Printing

Selective or progressive

Bed and platen machines

400121, 4001572, 101 9329, 148 165, 335274, B41J 310

Patent

active

047716894

ABSTRACT:
An elongated unitary spring armature is disclosed for use in dot matrix printers. The spring armature has an elongated triangular shape with attachment means located adjacent to the base and means for securing the impact tip located adjacent to the apex. A spring portion formed of a high carbon steel is located adjacent to the attachment means and an armature portion formed of a low carbon steel separates the spring portion from the apex. Processes for making the spring armature are also disclosed.

REFERENCES:
patent: 3408237 (1968-10-01), Gulliksen et al.
patent: 4165243 (1979-08-01), Sarnes et al.
patent: 4351235 (1982-09-01), Bringhurst
patent: 4503768 (1985-03-01), Whitaker

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