Incremental printing of symbolic information – Ink jet – Fluid or fluid source handling means
Reexamination Certificate
2011-08-02
2011-08-02
Meier, Stephen (Department: 2853)
Incremental printing of symbolic information
Ink jet
Fluid or fluid source handling means
C347S085000
Reexamination Certificate
active
07988265
ABSTRACT:
An inkjet pen includes a standpipe plenum, a printhead in fluid communication with the standpipe plenum, and a detector for detecting the amount of air in the standpipe plenum. A printing system including such an inkjet pen further includes structure for removing air from the standpipe plenum. Air is removed from the standpipe plenum when the amount of air detected in the standpipe plenum reaches a predetermined level.
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Hewlett--Packard Development Company, L.P.
Martinez Carlos A
Meier Stephen
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