Endless ribbon cassette

Details Endless ribbon cassette Endless ribbon cassette

1979-10-15

1981-09-01

Wright, Jr., Ernest T.

Typewriting machines

Including interposed inking device for record-medium

Endless ribbon or cartridge therefor

400248, B41J 3310

Patent

active

042868874

ABSTRACT:
A ribbon cassette for a looped ink ribbon in a stuffed state is provided with a depending plate on a lower surface of a cover member, for covering a ribbon chamber, near an outlet opening in order to reduce a ribbon drawing-out force by taking advantage of a slight and not-excessive frictional resistance taking place there. The depending plate is in the form of an inverted isosceles triangle and the distance between the tip end of the triangle and a floor of the ribbon chamber is smaller than the width of the ribbon.

REFERENCES:
patent: 3814231 (1974-06-01), Cappotto
patent: 4074800 (1978-02-01), Steinke
Brumbaugh et al., IBM Technical Disclosure Bulletin, "Printer Ribbon Cassette", vol. 19, No. 8, Jan. 1977, pp. 2978-2979.
Dowd, IBM Technical Disclosure Bulletin, "Ribbon Cartridge Exit Impedance", vol. 20, No. 11B, Apr. 1978, pp. 4739-4740.

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