Ricoh J012 Service Manual page 387

The carriage moves the first print head above the first vent of the maintenance unit (in this
example, Print Head 2 "K, C"). Only the first vent can siphon ink from the print head into the
ink collector tank. Another cam on the main shaft presses the maintenance unit up so the C
print head covers the first vent. Next, the maintenance motor reverses. The one-way clutch
disengages the main shaft and engages the second shaft. This operates the tube-pump.
The suction from the pump sucks ink from the surface of the print head.
Next, the maintenance unit lowers, and another cam raises the wiper. At the same time the
carriage moves the print heads left far enough so the vacuumed print head brushes past the
wiper. The wiper cleans the ink from the print head.
Next, the carriage moves the print heads back to the home position. The maintenance unit
caps the print heads. A cam on the main shaft below vibrates the small scraper. This
removes the ink bolus from the wall of the trap and sends it to the ink collector tank.
This cycle is repeated for each print head selected for cleaning. For more, see
Section "4. Troubleshooting."
This cleaning cycle is also done automatically for all print heads if the printer stays
idle for the time intervals shown in the table below.
SM
CÓPIA NÃO CONTROLADA
6-49
CÓPIA NÃO CONTROLADA
Ink Supply
J012/J013/J014