Ink ribbon feed mechanism

Details Ink ribbon feed mechanism Ink ribbon feed mechanism

1978-03-13

1980-06-03

Wright, Jr., Ernest T.

Typewriting machines

Including interposed inking device for record-medium

Ribbon-reversing mechanism

4002195, 400234, B41J 3344

Patent

active

042059232

ABSTRACT:
A mechanism for feeding an ink ribbon comprises a pair of ratchet wheels for taking up the ink ribbon, a feed pawl for rendering an intermittent movement to said ratchet wheels, a lever for preventing the backward movement of said ratchet wheels, a reverse mechanism for said ink ribbon, wherein a stopper which engages or disengages with said supply ratchet wheel in response to the movement of said lever is provided, thereby, through preventing the slack of the ink ribbon which occurs when the ink ribbon is taken up, the feeding of the ink ribbon is stabilized and the printing quality is improved.

REFERENCES:
patent: 917803 (1909-04-01), Scott
patent: 1082774 (1913-12-01), Sohm
patent: 1198638 (1916-09-01), Kurowski
patent: 2090811 (1937-08-01), Salmon
patent: 2902136 (1959-09-01), Whippo
patent: 2906203 (1959-09-01), Grosse
patent: 3184027 (1965-05-01), Howard
patent: 3542183 (1970-11-01), Stiffler
patent: 3633506 (1972-01-01), Mumma et al.
patent: 3786906 (1974-01-01), Okabe
patent: 3910399 (1975-10-01), Shimodaira

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