Ribbon drive mechanism for high speed printer

Details Ribbon drive mechanism for high speed printer Ribbon drive mechanism for high speed printer

1979-01-02

1981-05-05

Wright, Jr., Ernest T.

Typewriting machines

Including interposed inking device for record-medium

Ribbon-feeding mechanism

400208, 400217, BA1J 3314

Patent

active

042655528

ABSTRACT:
In a high speed printer, apparatus is provided for rotatably driving a ribbon take-up reel and a ribbon supply reel, each reel being adapted to support a portion of an inventory of ribbon running from the supply reel to the take-up reel at a constant speed differential between reels. This apparatus comprises a first inelastic drive belt for peripherally non-slip driving the ribbon portion on the take-up reel and a second inelastic drive belt unattached to the first drive belt for peripherally non-slip driving the ribbon portion on the supply reel. Means are provided for driving the first belt at a constant selected speed and drive coupling means provided which are non-slip driven by the first belt and are for non-slip driving the second belt at a constant speed which is slower than the first belt. In this manner, the web or ribbon between the supply reel and the take-up reel is maintained under a constant uniform strain level.

REFERENCES:
patent: 1046711 (1912-12-01), Alexander
patent: 3084880 (1963-04-01), Grant et al.
patent: 3305186 (1967-02-01), Burdorf et al.
patent: 3383061 (1968-05-01), Thompson et al.
patent: 3802644 (1974-04-01), Maiershofer
IBM Technical Disclosure Bulletin, "Ribbon Drive", Darwin, vol. 19 No. 4, Sep. 1976, pp. 1407-1408.

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