Printer ribbon lift assembly

Details Printer ribbon lift assembly Printer ribbon lift assembly

1977-09-14

1980-05-20

Wright, Jr., Ernest T.

Typewriting machines

Including interposed inking device for record-medium

Including mechanism for shifting ribbon laterally at...

4001442, 400208, 400212, 4002361, 4006971, B41J 3354

Patent

active

042036771

ABSTRACT:
An assembly for elevating the print ribbon and the erase ribbon of an impact printer is disclosed. In their respective rest positions, the ribbons are positioned in vertical relationship to one another and in one embodiment the ribbons are in the same plane when in their rest positions. When the printer is operating in the print mode, the print ribbon is selectively elevated to the print point while the erase ribbon remains stationary. When the printer is operating in the erase mode, both ribbons are elevated. In the erase mode, the print ribbon is elevated to a point above the print point and the erase ribbon is elevated to the print point.

REFERENCES:
patent: 1889315 (1932-11-01), Henderson
patent: 2135156 (1938-11-01), Watkins et al.
patent: 3154185 (1964-10-01), Kamp
patent: 3397767 (1968-08-01), Hobbs
patent: 3595362 (1971-07-01), Wolowitz
patent: 3645371 (1972-02-01), Jovis
patent: 3904017 (1975-09-01), Frechette
patent: 3905465 (1975-09-01), Frechette et al.
patent: 4020940 (1977-05-01), Daley et al.
patent: 4047607 (1977-09-01), Willcox
patent: 4047608 (1977-09-01), Willcox

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