Impact dot printing head

Details Impact dot printing head Impact dot printing head

1983-11-23

1985-10-01

Burr, Edgar S.

Typewriting machines

Typing by other than type-face or type-die

Character formation by impact

400124, 22826313, B41J 310

Patent

active

045442886

ABSTRACT:
An improved impact dot printing head in which a printing needle is secured more firmly to an armature than ever, particularly they are secured or soldered to each other at their mating portions by way of a solder material selected from nickel and nickel alloys, and a method of producing the printing head in which either an armature or a printing needle is plated, at least a mating portion thereof with the other, with such a solder material, and then they are assembled to each other and then the assembly is heated in a furnace so as to effect soldering of the printing needle to the armature with the solder material.

REFERENCES:
patent: 3088192 (1963-05-01), Turner
patent: 4307966 (1981-12-01), Spencer et al.

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