Capping Mechanism - Epson STYLUS 3000 Service Manual

EPSON Stylus COLOR 3000

2.2.7 Capping Mechanism

Ink around head nozzles loses moisture If they are left exposed while the printer is in non-printing or
power off status. Therefore the printheads must be capped to avoid increasing viscosity due to dried
nozzles. The caps are individually equipped for the black and color printhead. When the moves right
from the home position, the cap holder also shifts right and strikes the right frame. This motion opens the
air valve and the air in the cap is release. To resume printing, the moves right from the home position
to strike the right frame with the cap holder so that the air valve opens. This operation brings the negative
pressure in the cap back to normal and the goes back to the home position. Since the power switch of
this printer uses the secondary power-on circuit, the printer power stays on to allow the printer to complete
the capping operation even if the printer is turned off during the operation.
Figure 2-11. Capping Mechanism
2-11
Rev. A