Ink status system for a liquid ink printer

Details Ink status system for a liquid ink printer Ink status system for a liquid ink printer

1996-09-26

1999-12-28

Barlow, John

Incremental printing of symbolic information

Ink jet

Controller

B41J 2195

Patent

active

060071737

ABSTRACT:
An ink status system for determining the status of a consumable supply of ink contained in an ink container. The ink status system includes a first conductor, disposed on a first wall of the ink container, being aligned with the first wall such that the consumable supply of ink contacts a decreasing portion of the first conductor during consumption thereof and an ink sensing circuit, coupled to the first conductor, generating a continuously variable ink level signal as a function of the decreasing portion of the first conductor being contacted by the consumable supply of ink during consumption thereof. The ink status system is used in a liquid ink printer to determine the amount of ink remaining in an ink tank or ink cartridge. A liquid ink printhead of the printer includes the necessary circuitry to generate a signal indicating the status of the ink which can include ink levels as well as ink types or colors.

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patent: 5583544 (1996-12-01), Stamer et al.

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