Epson Stylus pro 7700m, Service Manual

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2.2.7 Cap Mechanism
The cap mechanism prevents printhead nozzles from drying and keeps bubbles from forming inside the nozzle
while the printer is not in use. The printer performs this operation automatically when print data is not
received, when printer power is turned off, and during printing or ink system operations. (The power switch
uses a secondary circuit that allows this operation to be performed.) Also this printer has 2 caps, 1 for the
black head and 1 for the color head.
2.2.8 Wiping Mechanism
The wiping mechanism cleans the surface of the printhead nose when the printer is in the ink system
sequence. The wiper drive gear transmits power from the paper feed motor via the clutch gear. When the
wiper is raised up against the printhead surface, the hook for securing the carriage to the home position is
raised, too. When the wiper goes down toward the bottom frame, the hook goes down, too. Both the black
head and the color head are cleaned by this wiper.
1
Color Cartridge Black Cartridge
Ca
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ia
g
e
A
ir
T
ube
Cap Holder
Cap 1 Cap 2
Air Valve
Valve Spring
1'
Figure 2-13. Cap Mechanism
Platen
Wiper (Cleaning Blade)
Clutch
Wiper Drive Gear
W ipe r Drive Ge ar Fra me
H o o k
Hook Lever
Figure 2-14. Wiping Mechanism
Stylus Pro Service Manual Operating Principles
Rev.A 2-11