Ribbon cassette and sensor assembly

Details Ribbon cassette and sensor assembly Ribbon cassette and sensor assembly

1982-10-12

1984-01-10

Pieprz, William

Typewriting machines

Including interposed inking device for record-medium

Package for ribbon facilitating mounting of ribbon on...

400212, 400229, B41J 3514, B41J 3520, B41J 3200

Patent

active

044250460

ABSTRACT:
An improved multicolor ribbon cassette system for use with a printing mechanism. A ribbon cassette is carried on a plate which is pivotally connected to a shuttle mechanism. The plate rotates about an axis which is perpendicular to a printing medium and the portion of the ribbon adjacent the printing mechanism. The pivot plate is tilted up or down to position a different part of the ribbon in alignment with a printing mechanism. The configuration of the device is such that the ribbon will remain parallel to the printing medium as it is tilted. The position of the pivot plate is controlled by means of a barrel cam driven by a stepper motor. The stepper motor is controlled by a logic circuit. An optical sensor is also connected to the logic circuit to determine whether a single color or multicolor cassette is in position.

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patent: 4280767 (1981-07-01), Heath
Kane, "Means Identifying . . . Print wheels," IBM Technical Disclosure Bulletin vol. 22, No. 11, pp. 4795-4796,. 4/80.
Cooper, "Electronic . . . Coding " IBM Technical Disclosure Bulletin vol. 19, No. 11, p. 4242, 4/77.

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