Dot printer having means for discharging static electricity from

Details Dot printer having means for discharging static electricity from Dot printer having means for discharging static electricity from

1983-12-09

1989-12-19

Wiecking, David B.

Typewriting machines

Including interposed inking device for record-medium

Endless ribbon or cartridge therefor

4002024, 400352, 4006931, 361212, B41J 3202

Patent

active

048879215

ABSTRACT:
An inpact dot printer has a ribbon cassette the casing of which is made of plastic. A leaf spring is mounted in the casing so as to be resilient contact with the inked ribbon in the cassette. An element protrudes from the spring to the outside of the casing, and is located at a position where it is in resilient contact with either a carriage of conductive material or a metal part secured to the carriage when the ribbon cassette is installed in position on the carriage. When the printer effects printing operation, static electricity generated on the ribbon is carried away to ground via the protruding element and other components.

REFERENCES:
patent: 2483542 (1949-10-01), Hooper
patent: 3601654 (1971-09-01), Long
patent: 3636408 (1972-01-01), Shuman
patent: 3857532 (1974-12-01), Bastiaans
patent: 4071133 (1978-01-01), Scherer et al.
patent: 4347549 (1982-08-01), Fechner
patent: 4351619 (1982-09-01), Duke et al.
patent: 4389126 (1983-06-01), Honma et al.
patent: 4407543 (1983-10-01), Haftmann
patent: 4418371 (1983-11-01), Menden
patent: 4451166 (1984-05-01), Frechette et al.
patent: 4452542 (1984-06-01), Akazawa

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