Ink jet printing system
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United States of America Patent
Stats
-
Feb 26, 2002
Grant Date -
N/A
app pub date -
Mar 29, 1999
filing date -
Feb 22, 1996
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An ink jet printing system comprising a droplet generator (5), a supply tank (3), supply transfer means for driving the ink from said tank to said generator and means for measuring the flow rate of the stream of ink droplets by monitoring the change of ink level in said tank, said system including a bleed connection (19) from the generator to the tank in closed circuit with said tank. An ink jet printing system comprising means for using measurements of the rate of change of liquid level in an ink supply tank to provide an indication that there has been a fault in the system. An ink jet printing system comprising a holding tank (101) for receiving liquid issued from the ink jet generator during preparation of the system.
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