Title: Endless loop ribbon cartridge with random storage

Abstract: A ribbon cartridge for a printer provides an unsupported length of ribbon between a pair of spaced guide means to provide for easy threading. In addition, continuous rotation of the ribbon is made possible by storing the ribbon as an endless loop in a random fashion in the principal cavity of the cartridge. A secondary cavity prevents an accidental loop from coming out of the cartridge which would otherwise result in slack in the unsupported length.

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Inventors: Lee, Sen Lin (Oakland, CA, US)
Hess, Ernst Peter (Castro Valley, CA, US)

Application Number: 229396
Filing Date: 1972-02-25
Publication_date: 1976-08-17
Assignee: Xerox Corporation (Stamford, CO)
Primary Class(es): 400/196.1 400/208, 400/320, 400/322, 400/335, 400/568, 400/902
Other Classes:
US Patent Ref:

539683	May, 1895	Johns	197/168.
764342	Jul, 1904	Booth	197/168.
1063289	Jun, 1913	Ruffin et al.	197/168.
2685357	Aug, 1954	Koreska	197/168.
2755905	Jul, 1956	Segui	197/168.
3621968	Nov, 1971	Kondur	197/151.
3726381	Apr, 1973	Murphy	197/168.

Other Refs: 12,87029,235

Jul, 1914	UK
May, 1914	UK

Primary Examiner: Eickholt, E. H.
Assistant Examiner:
Attorney: Beck; John E., Anderson; Terry J., Zalman; Leonard