LIYU PZR-KV-1 Series High Speed
. LIYU-PZR-KV-1-Series Manual
www.liyu-dms.com
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4.
Carry out the above operation for every print head in succession. Place all three-
way valves in working state after completing venting for all print heads. Press
positive pressure button and impress ink for all print heads again, then complete
ink injection of print heads.
5.
Meanwhile, in case of bubble found in ink tube leading to print head, which
affects ink out of the print head, the above method can also be adopted to carry
out venting operation.
Positive pressure ink
Positive pressure ink refers to impressing ink of the auxiliary ink tank into the print head by
pressing positive pressure button to eliminate the air in the nozzle and flush through the nozzle
blocked not so seriously, as well as solve some common problems of printing disconnection.
You can impose positive pressure to either a single print head or several or all print heads with the
specific operation steps as follows:
Stop the ink carriage at the cleaning position, namely the far left of the machine, and ensure
that the liquid receiver tank has been put in place under the bottom plate of print head.
Turn the three-way valve of the print head demanding ink to working state, with other valves
off.
Press positive pressure button and hold for a while, observe the ink out status of print head
and release positive pressure button when you feel ink flowing smoothly.
Wait for two seconds and wipe the nozzle surface with clean non-woven fabrics.
Negative Pressure Adjustment
Since negative pressure is an important factor for guarantying print quality, the operation of its
adjustment is crucial. The target of adjustment is to make ink form meniscus in every nozzle
printer. As long as sound meniscus is maintained, we can assure that ink droplets are ejected at
a high speed with few flight drops. Vacuum negative pressure system is applied to this printer.
The adjustment of negative pressure is as follows.
Vacuum Negative Pressure Adjustment
The intensity of vacuum negative pressure can be adjusted by the vacuum pressure gauge.
Panasonic DP - 101 vacuum pressure gauge is selected to control negative pressure for this
printer. The vacuum pressure gauge is operated on the right button panel. The following picture
demonstrates the negative pressure system.
For detail settings, please refer to appendix 1.
