Capping Mechanism - Epson Stylus Photo 870 Service Manual

EPSON Stylus Photo 870/1270
Figure 2-11 shows the operation of the pump mechanism.
Counterclockwise
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Figure 2-11. Pump Mechanism Operation

2.3.6 Capping Mechanism

The capping mechanism caps the printhead to let the pump
mechanism vacuum ink from the ink cartridges. It also keeps the
printhead surface clean and moist while the printer is turned off. This
prevents ink from clogging while the printer is not in use. (See the
next page for details.)
Clockwis
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The EPSON Stylus Photo 870/1270 includes a newly designed,
valveless capping mechanism. Figure 2-12 shows the difference in its
design from previous models.
Previous Design
Carriage strike
plates
Air bleed
Ink eject opening
opening
Valve
Closed
Open
Valve
release pin
Figure 2-12. Valveless Capping Mechanism
Chapter 2 Technical Overview
New Design
Carriage
strike plates
Ink eject
opening
Air valve is not present
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