Device and method for displaying a residual amount of cartridge

Details Device and method for displaying a residual amount of cartridge Device and method for displaying a residual amount of cartridge

1992-11-23

1994-08-02

Burr, Edgar S.

Typewriting machines

Including interposed inking device for record-medium

Means auxiliary to ribbon mechanism

400207, 400225, 400703, B41J 3536

Patent

active

053339606

ABSTRACT:
A device for displaying a residual amount of cartridge ribbons in a color video printer. The rotational period of a supply reel or a take-up reel, is detected and the detected rotational period is compared with previously stored reference periods. A present residual amount is displayed based on the comparison so that a user can know how many more sheets can be printed with the ribbon cartridge.

REFERENCES:
patent: 3884339 (1975-05-01), Castoldi et al.
patent: 4747716 (1988-05-01), van der Eikel
patent: 4797016 (1989-01-01), Lahr

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