Cap Mechanism; Wiping Mechanism - Epson STYLUS PRO XL 4004677 Service Manual

Operating Principles Stylus Pro XL

2.2.6 Cap Mechanism

The cap mechanism prevents the 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 or when the printer power is turned off during printing or ink
system operations. (The secondary circuit for the power switch allows this operation to be
performed.) Also this printer has two caps, one for the black head and one for the color head.
Color Cartridge
Black Cartridge
1 '
1
C a p 1 C a p 2
Cap Holder
Air Valve
Valve Spring
Figure 2-13. Cap Mechanism

2.2.7 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 (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 black and color heads are cleaned by this wiper.
H o o k
Hook Lever
Wiper (Cleaning Blade)
Wiper Drive Gear
Pl a te n
C lu tc h
Wip er Drive Gear Frame
Figure 2-14. Wiping Mechanism
2-12 REV.-A