Ribbon feed mechanism providing a constant relative velocity bet

Details Ribbon feed mechanism providing a constant relative velocity bet Ribbon feed mechanism providing a constant relative velocity bet

1985-02-22

1986-12-30

Pieprz, William

Typewriting machines

Including interposed inking device for record-medium

Ribbon-feeding mechanism

400229, B41J 3308, B41J 3338

Patent

active

046325824

ABSTRACT:
A ribbon feed mechanism for a bi-directional printer that produces a constant relative ribbon to print-head velocity. The invention produces the constant relative velocity by coupling the ribbon to the print-head through a reciprocating shuttle, which moves in an opposite direction to and at one-half the speed of the print-head. As the shuttle reciprocates it engages the ribbon such that a constant length is maintained between the ribbon supply and the print-head and between the print-head and the ribbon take-up. The ribbon is taken up at a constant speed. By this method, the relative ribbon to print-head speed is fixed at the ribbon take-up speed.

REFERENCES:
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patent: 4372697 (1983-02-01), Babcock
patent: 4405247 (1983-09-01), Hanna
patent: 4486107 (1982-12-01), Willcox
Halter et al, "Off Carrier Ribbon Supply", IBM Technical Disclosure Bulletin, vol. 22, No. 5, p. 1745, 10/79.

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