Incremental printing of symbolic information – Ink jet – Fluid or fluid source handling means
Patent
1996-03-11
1999-11-09
Le, N.
Incremental printing of symbolic information
Ink jet
Fluid or fluid source handling means
B41J 218
Patent
active
059800348
ABSTRACT:
An anti-clogging nozzle system for a continuous jet ink jet printer is disclosed. A printing nozzle has both an ink inlet and an ink outlet permitting constant ink flow behind the nozzle orifice during printing. A pressure sensor monitors the ink flow and signals clogs to an automatic unclogging system. The unclogging system includes a control circuit to initiate an unclogging operating cycle when necessary. One of two unclogging modes is employed, both of which require the control system to operate an unclogging valve to vary pressure in the ink return line.
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Lostumbo Pietro
Tsai Jianming
Le N.
Nguyen Judy
Videojet Systems International Inc.
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