Impact printer print mechanism and method of manufacture

Details Impact printer print mechanism and method of manufacture Impact printer print mechanism and method of manufacture

1988-08-05

1989-09-19

Wiecking, David A.

Printing

Selective or progressive

Bed and platen machines

101 9334, 4001572, B41J 910, B41J 938

Patent

active

048670596

ABSTRACT:
Electromagnets and spring-damper units respectively impart forward movement and rearward movement to slider members having hammer faces at their forward ends and armatures intermediate their lengths. The electromagnets and spring-damper units are mounted by the frame of the print mechanism for independent longitudinal adjustive movement. Adjustive movement of the spring-damper assemblies effects lateral alignment of the hammer faces at the forward ends of the sliders. Adjustive movement of the electromagnets effects adjustment of the forward movement characteristics of the sliders. Clamping forces are preferably imposed upon the electromagnets pending and during their adjustive movement. Anchoring of the electromagnets in their final positions preferably is accomplished by laser welding. An inexpensive frame plate restrains lateral movement of the sliders, maintains desired spacing between the pole faces of confronting electromagnets, and provides a surface upon which adjustive movement of the electromagnets can readily occur.

REFERENCES:
patent: 3726213 (1973-04-01), Herbert
patent: 4371857 (1983-02-01), Bohg et al.
patent: 4388861 (1983-06-01), Bohg et al.
patent: 4412197 (1983-10-01), Bohg et al.
patent: 4425845 (1984-01-01), Bohg et al.
patent: 4496253 (1985-01-01), Morsing
patent: 4527139 (1985-07-01), Bohg et al.
"Horizontal Sliding Print Hammer Mechanism," IBM Technical Disclosure Bulletin, vol. 25, No. 11B (Apr. 1983).

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