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Epson Stylus COLOR 800 Service Manual: Capping Mechanism

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EPSON Stylus &2/25 800

2.2.8.2 Capping Mechanism

The capping mechanism caps the printheads with the cap holder to prevent the ink around the nozzles
from increasing viscosity while the printer is in stand-by status or the printer power is off. Is has 2 separate
holders; one for the color inks and the other for the black ink. When the CR shifts from the home position
to the right end of the CR (Motion 1 in Figure 2-13), they move up into the capping position (Motion 2 in
Figure 2-13) to cap the printheads. Moreover, by shifting the CR unit to the right end of the CR shaft, the
air valve is shut out completely (Motion 3 in Figure 2-13).
The air valve is released and shut to alternate the false absorption mode and absorption mode. (Refer to
Section 2.4 for the details.) Since this printer has the Power supply board on the secondary electrical
circuit, capping operation is completely carried out with the constant voltage if the printer power is turned
off during the capping operation. The figure below shows the Capping mechanism.
Figure 2-13. Capping Mechanism
2-12
Rev. A

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