Ink System Mechanism - Epson Stylus C110 Service Manual

EPSON Stylus C110/C120/D120

2.2.4 Ink System Mechanism

The ink system mechanism includes the capping mechanism and the pump mechanism.
And the capping mechanism includes the carriage lock mechanism and the wiping
mechanism. The table below describes the function of each mechanism.
Table 2-3. Function of Each Mechanism in Ink System
Mechanism
Covers the printhead with the cap to prevent ink evaporation
Capping mechanism
when the printer is in standby mode or when the printer is off.
Wiping mechanism Wipes dust or ink stain off the printhead nozzle surface.
Drains ink from the ink cartridges, ink cavity, and the cap and
Pump mechanism
sends it to the waste ink pad.
Locks the carriage unit with the carriage lock lever while the
Carriage lock mechanism
unit is in the home position.
Waste Ink Tube (toward the Waste Ink Pad)
Pump Unit
Wiper
Combination Gear + Cam
(with clutch)
Figure 2-13. Ink System Mechanism
OPERATING PRINCIPLE
Function
Cap Slider
Cap
Carriage Lock Lever
Printer Mechanism Operating Principles
2.2.4.1 Capping Mechanism
The capping mechanism incorporates the wiping mechanism, however, the two
mechanisms operate independently. Capping the printhead is performed by the carriage
movement as the conventional models (such as Stylus CX4900/CX5000/CX6000) do.
CR Unit
Cap Slider
Ink System
(Cap unit)
Carriage unit moves toward the
home position
Figure 2-14. Capping Mechanism
2.2.4.2 Carriage Lock Mechanism
The carriage lock mechanism is activated by the capping operation. Locking or
unlocking the carriage is performed by the PF motor drive force that is transmitted via
the cam of the clutch-equipped combination gear. (See
more explanation about the cap slider and the cam operations)
Locking carriage
Unlocking carriage
Cam moves to lock or unlock carriage only when
cap slider pops up.
Figure 2-15. Carriage Lock Mechanism
Revision B
Carriage Unit presses down cap
slider. This causes cap to pop up and
cover printhead.
"Wiping Mechanism (p32)" for
31