Leibinger JET3 up - Grounding Regulation for Print Head Cleaning

Page 380 Setting-up/Maintenance Group 10
Release R1.06 JET3up
10.2.2 Grounding regulation for print head cleaning
For technical reasons the ink of a continuous ink jet printer is charged with high
voltage during the printing process. In case of inappropriate handling the static
charged ink may be an ignition source. In combination with flammable ink and
solvent this could pose a fire or explosion hazard.
Without any safety measures the ink in the service tray may be charged up during
cleaning work. In order to avoid this critical situation the print head and the service
tray have to be connected with a ground cable. In case of using a service tra
y
made of plastic material it would be possible to place a metal foil in the service tray
and connect the ground cable to that foil.
Fire hazard
Discharging the ink into a service tray
Print head
Explosion
hazard
Service tray
Leibinger
Cleaning station
Electrostatic-
sensitive
device
Ground cable
Connect print head
with service tray
Cleaning the print head
Fire hazard
Explosion
hazard
Electrostatic-
sensitive
device
Ground cable
Connect print head
with service tray