Typewriting machines – Including interposed inking device for record-medium – Means auxiliary to ribbon mechanism
Patent
1982-05-12
1984-01-31
Wright, Jr., Ernest T.
Typewriting machines
Including interposed inking device for record-medium
Means auxiliary to ribbon mechanism
400208, 4002351, 400234, 400636, 400641, 400716, B41J 3536
Patent
active
044286953
ABSTRACT:
A cartridge which contains two spools. The supply spool has wound about it a printing ribbon and the take-up spool being used for wrapping the used ribbon. The cartridge has a ribbon exit at one location and a ribbon entry at a remote location to define a path for the ribbon to pass therealong. Two drive gears are engaged with each other and a pressure roller. The drive gears are located and their lower portions are configured to engage the respective drive shafts of various printers. When the first drive gear is driven by a printer, the second gear, which includes the drive wheel, rotates in the opposite direction of the drive shaft of the printer. When the second gear is driven, the integral drive wheel rotates in the same direction as the drive shaft of the printer. The pressure roller is provided with internal flexible spokes, or springs, and provides a self-adjusting bias against the drive wheel to drive the ribbon and provides an extremely efficient pinching action. An end of ribbon detection system which includes a reflector or the like positioned between a sensor and the ribbon to allow optimization of the light path is also provided.
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IBM Technical Disclosure Bulletin, "Transmissive Document Sensor" Anderson et al., vol. 23, No. 4, Sep. 1979, pp. 1585-1586.
IBM Technical Disclosure Bulletin, "Optical Means for End-of-Ribbon Sensing", Bullock et al., vol. 23, No. 9, Feb. 1981, pp. 3955-3956.
Kristofferson T. E.
Qume Corporation
Stolzy A. D.
Wright, Jr. Ernest T.
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