METHOD AND A PUMPING UNIT FOR SUPPLYING PRINTING INK AND CLEANING LIQUID TO A PRINTING UNIT
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United States of America Patent
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N/A
Issued Date -
Feb 28, 2002
app pub date -
Jan 13, 2000
filing date -
Mar 24, 1997
priority date (Note) -
Abandoned
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Abstract
A pumping unit (1) for supplying printing ink to a printing unit (2) is described. In order to achieve as effective a utilization of the printing unit (2) as possible and the shortest possible time for exchanging different printing ink colors, the described pumping unit (1) is arranged with a printing ink tank (27) and a cleaning liquid tank (28). The pipe (33, 34) for sucking up or return pumping of the cleaning liquid/printing ink may be slided from a position in one or the other tank (27, 28). Process steps of inking as well as of cleaning are controlled by a central control unit (44) so that the only intervention of the operator that is necessary, is exchange of the printing ink tank (22) when a new printing ink color is to be applied in the printing unit (2).
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