Guangzhou EC-PACK Packaging Equipment Co., Ltd.
EC-JET 1000Pro Continuous Inkjet Printer
2.2.11 Velocity of Drop
Ink velocity can impose a minor change in the mass of a drop, which will affect the final printing position
of the drop. However, precise placement of drops is more dependent on the speed of the drops as they
travel through the deflector plates;.
For this reason, the velocity of drop (VOD) is constantly monitored and compared with the optimum (VOD
reference) value printed on the print head conduit. A “feedback loop” is used to increase or decrease
ink pressure, thus maintaining the correct speed of drops for accurate placement and therefore quality of
print. The following illustrates principle:
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