Liquid toner supply system and method
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United States of America Patent
Stats
-
Mar 26, 1991
Grant Date -
N/A
app pub date -
Oct 24, 1989
filing date -
Oct 24, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An automated system and method are provided to supply a liquid toner dispersion to the printing station of a high speed electrophotographic printing press. A highly concentrated form of the liquid toner dispersion is supplied in a first container. Density measurement of the liquid toner in a process tank controls the feed of concentrate to the process tank. Liquid level switches in the process tank control toner carrier liquid flow to the process tank. Conductivity sensor monitoring of the toner in the process tank controls the flow of liquid charge control agent into the process tank. Flow rate of the liquid toner from the process tank to the printing station of the printing unit is controlled by a sensor, logic circuitry, and motorized adjustable flow valve and flow meter.
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