Ink level detection system for ink jet printing apparatus

Details Ink level detection system for ink jet printing apparatus Ink level detection system for ink jet printing apparatus

B - Operations, Transporting

41

J

101/96.0218

B41J 2/175 (2006.01)

Patent

CA 1257504

-0- INK LEVEL DETECTION SYSTEM FOR INK JET PRINTING APPARATUS ABSTRACT The detection system includes a cartridge having a first detection port for detecting the pressure condition in the top portion of the cartridge and a second detection port and tube for detecting the pressure condition in a bottom portion of the cart ridge. The cooperative printer structure couples these ports to a pressure differential sensor that signals a printer refill condition.

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