Printing head for use in dot printers

Details Printing head for use in dot printers Printing head for use in dot printers

1985-09-24

1987-08-18

Sewell, Paul T.

Typewriting machines

Typing by other than type-face or type-die

Character formation by impact

101 9305, B41J 352

Patent

active

046873554

ABSTRACT:
A printing head comprises a plurality of printing wires which are disposed in alignment with each other and for reciprocal motion. Each of the printing wires is formed by a main body member made of powdered high speed steel, and a chip member made of a rhenium base alloy and welded to an outer tip end of the main body member by means of partial welding. Further, a wire guide member made of zirconia is provided to guide the wire for reciprocal motion of the wire.

REFERENCES:
patent: 3828908 (1974-08-01), Schneider
patent: 3889793 (1975-06-01), Cattaneo
patent: 4010836 (1977-03-01), Bernardis
patent: 4155660 (1979-05-01), Takahashi
patent: 4304495 (1981-12-01), Wada
Handbook of Chemistry and Physics, 45th Edition, The Chemical Rubber Company, 1964, p. E-3.

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