Print wire alignment in a wire dot printer

Details Print wire alignment in a wire dot printer Print wire alignment in a wire dot printer

1989-09-06

1992-01-28

Wiecking, David A.

Typewriting machines

Typing by other than type-face or type-die

Character formation by impact

101 9305, B41J 226

Patent

active

050838768

ABSTRACT:
A printing head for a wire dot printer includes a plurality of printing levers connected to a corresponding plurality of printing wires. A plurality of guide holes are operable for guiding the distal ends of the printing wires beyond a nose of the printing head. Each guide hole corresponds to one of the plurality of printing levers. As viewed from the nose of the printing head, each printing lever extends radially from its corresponding guide hole and the inner ends of the printing levers form a zig-zag pattern. A plurality of plate springs provides the resilient force to push the printing levers and thereby the printing wires toward the nose of the printing head. A spacer for supporting the plate springs equalizes the effective length of each plate spring.

REFERENCES:
patent: 4218150 (1980-08-01), Swaim
patent: 4225250 (1980-09-01), Wagner et al.
patent: 4437775 (1984-03-01), Ochiai et al.
patent: 4453840 (1984-06-01), Hodne
patent: 4473311 (1984-09-01), Sakaida
patent: 4571102 (1986-02-01), Ono et al.
patent: 4669898 (1987-06-01), Yeh et al.

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