Leibinger Jet 3 - Appendix: Interface Circuit Diagrams

Group 10 Equipping/Maintenance Page 349
Release R2.0 LEIBINGER JET3
10.3.2 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 tray 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.
Discharging the ink into a service tray
Fire hazard
Explosion
hazard
Electrostatic-
sens. device
Cleaning the print head
Fire hazard
Explosion
hazard
Electrostatic-
sens. device
Print head
Service tray
Leibinger
Cleaning station
Ground cable
Connect print head
with service tray
Ground cable
Connect print head
with service tray