Ink jet cartridge with ink level detection

Details Ink jet cartridge with ink level detection Ink jet cartridge with ink level detection

1997-01-21

1998-08-04

Eickholt, Eugene H.

Typewriting machines

Means auxiliary to typewriting function

Indicator means

347 7, 347 19, B41J 201

Patent

active

057883882

ABSTRACT:
A replaceable ink cartridge for an ink jet printing system having an ink supply station with an ink receptacle and a printer electrical connector. The cartridge has a housing removably matable with the ink supply station. An electrical circuit and a connected cartridge electrical connector reside on the housing, and the cartridge electrical connector is matable with the printer electrical connector. An ink reservoir in the housing defines a chamber containing a supply of ink of a selected volume, and has an ink outlet connectable to the printer ink receptacle. An ink level sensor in the housing is connected to the cartridge electrical connector, and detects whether the supply of ink is less than a threshold amount. If so, it generates an "ink depleted" signal.

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