Typewriting machines – Including interposed inking device for record-medium – Ribbon-feeding mechanism
Reexamination Certificate
2006-12-19
2006-12-19
Chau, Minh (Department: 2854)
Typewriting machines
Including interposed inking device for record-medium
Ribbon-feeding mechanism
C400S225000, C400S232000, C400S234000
Reexamination Certificate
active
07150572
ABSTRACT:
A tape drive for use in for example a transfer printing apparatus to drive a printer ribbon. The printer ribbon is mounted on two spools each of which is driven by a respective stepper motor. A controller controls the energization of the motor such that the ribbon is transported in at least one direction between spools mounted on the spool support. The controller is operative to energize both motors to drive the spools of ribbon in the direction of ribbon transport to achieve push-pull operations. Ribbon tension is monitored to enable accurate control of ribbon supply and ribbon take-up, the ribbon tension being monitored, for example, by monitoring power supply to the two stepper motors.
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Buxton Keith
Hart Philip
McNestry Martin
Chau Minh
Nixon & Vanderhye P.C.
Zippher Limited
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