Ricoh J001 Service Manual page 525

No. Component
Ink Collection Tank
SN
Sensor
SN Ink Level Sensor
Maintenance HP
SN
Sensor
SN PFU Paper Sensor 1
Paper End Sensor –
SN
Tray 1
Temperature/Humidity
SN
Sensor
SM
CÓPIA NÃO CONTROLADA
whether the ink cartridge is inserted or inserted
correctly.
A "smart" reflective sensor mounted at the back of the
ink collection tank. Detects when the ink collection
tank is almost full and alerts the operator that the ink
collection tank needs to be replaced.
Mounted above the front guide rail. Monitors the
positions of the ink level lever of each ink tank. The
vacuum created inside the ink tanks as ink is
consumed gradually draws the base of the spring-
loaded arms in against the sides of the tank. Drawing
the base closer to the side of the tank forces the tip of
the arm out. The ink level sensor detects the position
of the tip every time it passes through the gap of the
sensor.
An interrupt sensor mounted in the maintenance unit
that controls the operation of the maintenance motor in
the print head cleaning cycle. At the beginning of the
cleaning cycle, a feeler leaves the gap of this sensor
and switches the motor on. At the end of the cleaning
cycle the feeler rotates into the gap, switches the
sensor off. This switches the motor off and the caps
and wiper remain down at the home position.
Located below the above the bottom plate of the paper
cassette in Tray 2 (the optional paper feed unit). A
spring loaded bottom plate keeps the top of the stack
against the pick-up roller for paper feed. A free-
swinging feeler rests on top of the stack. After the last
sheet feeds, one end of the feeler falls down through a
cutout in the bottom plate. An actuator on the other
end of the feeler swings up and out of the gap in the
paper end sensor. This signals paper end.
Located below the transport belt. A spring loaded
bottom plate keeps the top of the stack against the
pick-up roller for paper feed. A free-swinging feeler
rests on top of the stack. After the last sheet feeds,
one end of the feeler falls down through a cutout in the
bottom plate. An actuator on the other end of the feeler
swings up and out of the gap in the paper end sensor.
This signals paper end.
Located inside the printer near the transport belt. The
temperature/humidity sensor constantly measures
temperature and humidity around the transport belt.
The printer uses these readings to adjust the amount
of charge applied to the areas of the belt that contact
the leading edge, center, and trailing edge of the
paper. For more, please refer to Section "4.
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Electrical Component Functions
Function
J007/J010/J011