Measuring apparatus for the ink-level in ink-jet printing unit

Details Measuring apparatus for the ink-level in ink-jet printing unit Measuring apparatus for the ink-level in ink-jet printing unit

1994-12-06

1997-04-22

Fuller, Benjamin R.

Incremental printing of symbolic information

Ink jet

Controller

347 87, 347 93, B41J 2195, B41J 2175

Patent

active

056232918

ABSTRACT:
In an ink-jet printing unit comprising a printing head mounted on the container, a measuring circuit comprising a pair of electrodes which substantially enclose the volume of ink within the container, allows hysteresis- free linear mode measurement of variations in the ink volume within the container and the signalling of at least one of the ends of the variation interval to indicate the most suitable moment for recharging ink in the container by means of a cartridge inserted into the container.

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