Printer with a device for controlling the velocity of the ribbon

Details Printer with a device for controlling the velocity of the ribbon Printer with a device for controlling the velocity of the ribbon

1997-07-15

1999-10-05

Burr, Edgar

Typewriting machines

Including interposed inking device for record-medium

Ribbon-feeding mechanism

400636, 400234, B41J 3336

Patent

active

059612304

ABSTRACT:
A printer, in particular of the type used for printing cheques with magnetic ink, comprises a control device for advancing a ribbon at a velocity substantially equal to the velocity of documents. The velocity of documents and the ribbon are controlled by an electronic unit which drives respectively a first motor and a second motor. The control device includes a presser means comprised of a pair of rollers urged against a motor driven roller. This arrangement enables the precise control of the velocity at which the ribbon is advanced. Downstream of the control device, the combined action of a first temporary take up device outside the cartridge and a second permanent take up device inside the cartridge assures the insertion of used ribbon into the cartridge and its winding around a reel by means of a third motor timely controlled by the electronic unit.

REFERENCES:
patent: 3455431 (1969-07-01), Martin
patent: 4010839 (1977-03-01), Guerrini et al.
patent: 4160410 (1979-07-01), Fichter
patent: 4661004 (1987-04-01), Applegate et al.
patent: 4747715 (1988-05-01), Lahr
patent: 5294203 (1994-03-01), Williams
patent: 5433539 (1995-07-01), German
patent: 5533819 (1996-07-01), Watanabe et al.
patent: 5647679 (1997-07-01), Green et al.

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