EPSON Stylus Pro 3800/3800C/3850 Revision A
OPERATING PRINCIPLES Cleaning Mechanism 44
2.4 Cleaning Mechanism
The cleaning mechanism consists of a pump cap unit and a waste ink pads
(maintenance cartridge).
Pump Motor
The pump motor drives the cap unit, pump, head cleaner, and carriage lock. The table
below shows the operation of each mechanism depending on the rotational direction of
the pump motor.
Note *: The rotation direction as seen from the top of the unit.
Figure 2-11. Drive Transmission Path
Cap Unit/Carriage Lock
The pump motor moves the cap unit up and down. The cap unit goes up to seal the
print head during cleaning and stand-by. Carriage lock operates in synchronization
with the cap unit. When the carriage unit moves to the home position, carriage lock
moves up together with the cap unit and lock the carriage unit.
Figure 2-12. Cap Unit/Carriage Lock Mechanism
Table 2-6. Pump Motor Functions
Mechanism CCW * CW *
Cap Unit Open (Uncapping) Close (Capping)
Pump Pump release Pump suction
Head Cleaner
Wiper reset
(back to the home)
Wiper set
(moves to the wiping position)
Carriage Lock Unlock Lock
Cap Unit
Pump Motor
Combination Gear, 16, 11.5
Combination Gear, 13.5, 10
Pump
Head Cleaner
Combination Gear, 15.5, 9.5
Spur Gear, 26.5
Spur Gear, 13
Spur Gear, 21.5
Intermittent Gear, 21.5
Carriage Lock
Cap Unit
Intermittent
Gear, 21.5
Combination Gear, 15.5, 9.5
Spur Gear, 26.5
Pinion Gear
(Pump Motor)
Carriage Lock
Spur Gear, 21.5
Cap unit moves up
(capped, locked)
Cap unit moves down
(uncapped, unlocked)
Spur Gear, 13
To Next Page
Loading...
