Epson 3800 - Stylus Pro Color Inkjet Printer Service Manual page 45

EPSON Stylus Pro 3800/3800C/3850
† Pump Unit
The ink is absorbed from the head nozzles. The sucked waste ink is conveyed to the
waste ink pad through the tube.
The CW rotation of the pump motor rotates the conveyance roller. The roller rotates
pressing the tube to convey the waste ink from the cap unit to the waste ink pad.
The CCW rotation of the pump motor moves the conveyance roller away from the
pressing position.
Conveyance Roller
Figure 2-13. Pump Unit Mechanism
OPERATING PRINCIPLES
Head Nozzle
To Waste Ink Pad
Cleaning Mechanism
† Head Cleaner
The head cleaner wipes off ink, dirt or the like from the surface of the head nozzles.
The CW rotation of the pump motor moves the head cleaner to the wiping position.
Combination
Intermittent Gear, 21.5
Gear, 13.5, 10
Spur Gear, 21.5
Figure 2-14. Head Cleaner Mechanism
Revision A
Head Cleaner
Combination
Gear, 13.5, 10
Combination
Gear, 16, 11.5
Spur Gear,13
Spur Gear, 26.5
Combination
Gear,15.5, 9.5
Pinion Gear
(Pump Motor)
45