3-25 Confidential
(2) Carriage lock mechanism
This mechanism locks the head/carriage unit to prevent the head nozzles from getting out of the
head cap unit accidentally due to external vibration or impact when the machine is not printing,
when the power is off, or during transport.
Driving the purge cam causes the carriage lock to pop up in order to lock the head/carriage unit
when the head caps are tightly pressed against the ink-jet units.
(3_09)
Carriage lock
Purge cam
(Front)
Maintenance unit
(3) Purge mechanism
Driving the purge cam to the pump switching unit's black or color ink drain position reverses the
paper feed motor and activates the tube pump, producing negative pressure to drain the air and old
ink from the head nozzles and channels into the ink absorber box.
Pump switching unit
Purge bevel gear
Tube pump
Main drain tube
Color drain tube
Black drain tube
Opening tube to
the atmospheric air
Air vent tube
(3_10)
Purge cam
Main drain tube
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