Incremental printing of symbolic information – Ink jet – Fluid or fluid source handling means
Reexamination Certificate
2007-11-27
2007-11-27
Stephens, Juanita D. (Department: 2853)
Incremental printing of symbolic information
Ink jet
Fluid or fluid source handling means
C347S086000
Reexamination Certificate
active
11014754
ABSTRACT:
A refill unit for refilling an ink storage compartment supplying a printhead assembly with an array of nozzles is provided. The refill unit has a body containing a quantity of ink, an ink outlet, and a repressurizing arrangement. During use, the ink storage compartment is maintained at a negative pressure to avoid inadvertent ink leakage from the nozzles. Accordingly, upon engagement of the refill unit with the ink storage compartment, the repressurizing arrangement causes part of the ink storage compartment to be inwardly depressed as the ink from the body is drawn into the ink storage compartment through the ink outlet by the negative pressure until pressure equalization. Further, upon subsequent disengagement of the refill unit from the ink storage compartment, the repressurizing arrangement releases the inwardly depressed part of the ink storage compartment to re-establish the negative pressure.
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Berry Norman Micheal
Hibbard Christopher
Jackson Garry Raymond
MacKey Paul Ian
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