Typewriting machines – Including interposed inking device for record-medium – Package for ribbon facilitating mounting of ribbon on...
Patent
1975-08-11
1979-01-02
Sewell, Paul T.
Typewriting machines
Including interposed inking device for record-medium
Package for ribbon facilitating mounting of ribbon on...
400234, B41J 3304
Patent
active
041324854
ABSTRACT:
A low cost cartridge for supplying inked ribbon to the printing station of an associated printing device. The cartridge includes an internal tensioning mechanism for maintaining the length of inked ribbon positioned in the printing station at a constant tension independently of the quantity of ribbon remaining on the supply reel in the cartridge. The tensioning mechanism includes an elastic endless belt disposed in a closed path about a plurality of freely rotatable rollers, the path having an interference region in which portions of the belt are engaged by a portion of the outer layer of supply reel mounted ribbon and are deflected thereby to produce a drag force on the supply reel which varies with the pulling force required to withdraw ribbon from the supply reel.
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patent: 3833108 (1974-09-01), Von Daeniken
patent: 3863749 (1975-02-01), Perry et al.
Qume Corporation
Sewell Paul T.
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