Typewriting machines – Typing by other than type-face or type-die – Character formation by impact
Patent
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.
Harada Kunimitsu
Suzuki Hirofumi
Waki Masahiko
Burr Edgar S.
Citizen Watch Co. Ltd.
Wiecking David A.
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