G - Physics – 01 – D
Patent
G - Physics
01
D
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G01D 15/16 (2006.01) B41J 2/19 (2006.01)
Patent
CA 1137357
LE9-80-015 AIR PURGING PUMP FOR INK JET PRINTERS Abstract Disclosed is an ink system for an ink jet printing apparatus having a replaceable ink bottle ink supply and a receptacle for receiving the ink bottle for coupling of the bottle to the ink system of the printer by an ink supply line. The improved apparatus includes an air purging pump for inhibiting air entry into the ink supply line occurring during ink bottle changes. A syringe type needle is provided in the base of the receptacle for providing fluid communication with the interior of the ink bottle, the air purging pump being placed intermediate the needle and the ink supply line. A pump actuator is coupled to the pump and actuable by entrance and egress of the bottle into and out of the receptacle, the air purging pump operable for withdrawing ink and air into the syringe upon relaxation of said pump by a bottle egressing the receptacle, and for pumping ink and air entrained in the needle back into a fresh bottle upon entrance of the bottle into the receptacle thereby inhibit- ing air bubbles in the ink supply line due to ink bottle changing.
374621
International Business Machines Corporation
Kerr Alexander
LandOfFree
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