Gestetner B070 Service Manual page 575

Charge Corona Wire Cleaning
[B]
Air flowing around the charge corona wire may deposit toner particles on the
corona wires. These particles may interfere with charging and cause low density
bands on copies.
The wire cleaner pads [A] automatically clean the wires to prevent such a problem.
The wire cleaner is driven by a dc motor [B]. Normally the wire cleaner [C] is at the
front end (the home position). Just after the main switch is turned on, the wire
cleaner motor turns on to bring the wire cleaner to the rear and then back to the
home position. When the wire cleaner [D] moves from the rear to the home
position, the wire cleaner pads swivel, bringing the pads into contact with the wires,
and clean the wires as it moves forward.
Cleaning is executed when:
• The machine is switched on and the fusing temperature is less than 100°C while
auto process control executes.
• Every 24 hours.
• After every 5,000 copies. This can be adjusted with SP2804 002 (Charge Corona
Cleaner Setting – Corona Wire Cleaning Interval).
SM
CÓPIA NÃO CONTROLADA
[D]
6-59
CÓPIA NÃO CONTROLADA
DRUM UNIT
[A]
[A]
[C]
B070D558.WMF
B070/B071