Specifications

2-32 Outline of Operation Rev. A
Confidential
Wiping/carriage-lock mechanism
The wiping mechanism wipes ink and dust off the surface of the nozzles, and is therefore a part
of the head-cleaning process.
Forward rotation of the pump motor acts on the pump gear, causing the clutch plate to move.
The motion of the clutch causes the cleaner head to advance into the motion path of the print
head. When the carriage unit carries the print head to the left or right, the nozzles brush against
the protruding cleaner head so that ink and dirt are wiped away. Reversing the rotation of the
pump motor causes the cleaner head to retract, so that it is no longer in the print-head path.
The carriage-lock mechanism prevents the carriage unit and cap from coming loose during
printer transport. The mechanism is also an extension of the wiping mechanism described
above. To execute locking, the pump motor runs in the forward direction while the carriage unit
is stationary at home position; this motor rotation moves the lock lever (though the movement of
the cleaner head) so that the edge of the lever engages the pin on the carriage, locking the
carriage unit in place. To unlock the carriage unit, the pump motor runs in reverse so that the
lock lever comes free of the pin.
Figure 2-45 Wiping/carriage-lock mechanism (cross section drawing)
<printing>
<carriage locking.>
<carriage wiping>
carriage
cleaner head lever
cleaner head
pump gear / clutch plate
carriage lock lever