Replaceable inking cartridge with depletion counter

Details Replaceable inking cartridge with depletion counter Replaceable inking cartridge with depletion counter

1987-10-19

1991-04-16

Wiecking, David A.

Typewriting machines

Including interposed inking device for record-medium

Means auxiliary to ribbon mechanism

4001961, B41J 3536

Patent

active

050077503

ABSTRACT:
There is disclosed a replaceable inking cartridge for a printer. The inking cartridge includes an arrangement for indicating when the inking medium of the cartridge has been spent. The indicating arrangement is non-resettable so that the user is prevented from using a spent cartridge for additional printing. The indicating means is useful for signalling the user or the printer about the spent condition of the cartridge.

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Spotts, Design of Machine Elements, 5th ed., 1978, Prentice-Hall, Englewood Cliffs, N.J., pp. 491, 493.
Caudill, "Ribbon Use Indicator", IBM Technical Disclosure Bulletin, vol. 8, No. 8, Jan. 1966, pp. 1137-1138.

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