Saturn S300 Series Service Manual page 35

Equipment Description and Component Identification
42. Solenoid (Ink Supply, Cleaning Solenoid)
Attached to the rear of the nozzle， the solenoid controls the flow of
pressurized ink to the nozzle. The Solenoid opens at40psi (2.8 bar)
of ink pressure.
43. Nozzle
The nozzle is an assembly which houses a jeweled orifice and a
piezo-electric crystal used to change the ink stream into ink
droplets. The nozzle is electrically-driven by an oscillator on the
print control board to produce ultrasonic vibrations that break the
ink stream into droplets.
44. Gutter
The gutter collects the ink drops that are not used for printing.
Vacuum draws all unused ink droplets back into the ink tank for
recirculation. The recovery block also contains a sensing
electrode used to detect charged ink drops to monitor the drop
chargeability when not printing.
45. High Voltage Deflection Electrode
Positioned directly opposite the ground electrode, the high
voltage deflection electrode provides the positive high voltage
(upper electrode). The ink drops pass through the electric field
created between the high voltage deflection electrode and the
ground electrode. The high voltage deflection electrode causes
the negatively charged drops to be deflected over the gutter to
produce a printed code.
46. Horizontal Locking Screw
The horizontal locking screw enables you to adjust the nozzle
horizontally. When loosened (approximately one-half turn), you
can adjust the ink stream horizontally by turning the horizontal
adjustment screw. When tightened, you cannot move the nozzle
horizontally.
47. Vertical Adjustment Screw
The vertical adjustment screw adjusts the vertical position of the
ink stream in the gutter. Turning this screw will adjust the ink
stream up and down in the gutter.
48. Horizontal Adjustment Screw
The horizontal adjustment screw adjusts the horizontal position of
the ink stream in the gutter. Turning this screw will adjust the ink
stream to the left and right in the gutter.
Caution: Before you adjust the horizontal adjustment
screw, you must first loosen the horizontal locking screw.
49. Recovery Tube
The Recovery Tube is a tube leading from the gutter, through the
umbilical assembly, and to the ink tank in the fluid pan. The
Recovery Tube returns unprinted ink droplets to tank.
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