One-pump color imaging system and method
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United States of America Patent
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Jan 22, 1991
Grant Date -
N/A
app pub date -
Jan 4, 1990
filing date -
Jan 4, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A simplified color printing system and method is disclosed in which the printing system has a single applicator that is supplied with toner fluids or inks of different colors. The printing system is simplified by having a single pump employed in association with the applicator. Use of a single pump is made possible, because during a color change the pump and applicator are purged with air both before and after a wash fluid is circulated. The single pump is used to pump both the imaging fluids and the air. The present invention has application in both color electrostatic printers and copiers, and in color ink-jet printers.
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