Brother DCP130C Service Manual page 63

- Purge gear and purge bevel gear
These gears transmit the power from the clutch gear (detailed in [ 4 ] later) to the planetary arm.
- Planetary arm
This switches power to the tube pump or pump switching unit depending on the direction of
paper feed motor rotation.
- Tube pump
A roller squeezes the main drain tube looped inside, forcing their contents toward the ink
absorber box and creating negative pressure.
- Head cap unit
When the power is off or the machine is not printing, the head cap unit fits tightly over the print
head to prevent the head nozzles from drying up and to seal the head nozzles for purge
operations to suck up old ink.
- Air vent cap and rods
During air venting with the tube pump, the air vent cap fits tightly over the air vent unit in the
head/carriage unit so that the negative pressure applies to the air vent unit. Pushing up the air
vent rods opens the shut-off valves inside the air vent unit, removing air trapped in the damper
assemblies. (For the air vent unit, see
- Head wiper
As the head/carriage unit moves, this wipes off any ink remaining on the head nozzle surface.
- Head cap holder
This moves to the right together with the head/carriage unit as the latter returns to its home
position. Rightward motion of the head cap holder turns the lift arms, fitting the head cap unit
tightly over the print head to seal the head nozzles.
Viewed from the top
Head cap unit
Purge gear
Head wiper
Head/carriage lock
Section 3.2.2.1, [ 3
Air vent cap
Air vent rods
Head cap holder
(3_05_1)
3-23
].)
Viewed from the bottom
Pump switching unit
Purge cam
Purge bevel gear
Purge gear
Tube pump
Planetary arm
(3_05_2)
Confidential