This patent describes an ink jet printer which uses a linear stepper actuator to eject ink from a nozzle chamber. The linear stepper actuator is interconnected to a plunger and actuates the plunger to eject ink. The plunger is sealed in the nozzle chamber and has a hydrophobic surface located alongside...http://www.google.es/patents/US6247794?utm_source=gb-gplus-sharePatente US6247794 - Linear stepper actuator ink jet printing mechanism
Linear stepper actuator ink jet printing mechanism
