Ink Valve Mechanism - Epson Stylus Pro 5000 Service Manual

Stylus Pro 5000

INK VALVE MECHANISM

The purpose of the ink valve mechanism is to prevent ink leaks when
transporting the printer. The Stylus Pro 5000 does not have a waste ink
sequence like the Stylus Color 3000. Since this printer does not perform
an initial ink charge, do not remove the ink cartridges from the printer
during transportation.
Valve is opened by CW
PF motor rotation
CW(Valve is opened)
CCW(Valve is closed)
Transmission Gear
Figure 2-23. Ink Valve Mechanism (Valve Open)
Clutch Gear
Cams protrude after
CW PF motor rotation
The PF motor drives the ink valve mechanism. The cam clutch slips if it
tries to turn more than 180 degrees.
Valve is closed by CCW
PF motor rotation
Figure 2-24. Ink Valve Mechanism (Valve Closed)
When the printer is turned on, the PF motor turns clockwise during
initialization. This opens the valve. The valve closes when printing is
complete.
Chapter 2 Operating Principles
Cams face the valve after
CCW PF motor rotation.
2-15