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Home Position Sensor
The maintenance jet absorber on the purge unit is the home position (car-
riage reference position) of the carriage. When the carriage is not at the
home position (carriage reference position), a home position error occurs.
Even if image data is received during a home position error, printing is not
performed, and the received image data is stored to memory. When the
error is canceled, the received image data in memory is printed.
• Pumping operation state detection mechanism
When the carriage moves to the home position, the home position sensor
switches to the sensor for detecting the pumping operation state. The home
position sensor detects the pumping operation state by the movement of
the actuator arm that is interlocked with the pumping operation control
cam inside the purge unit.
Rubber cap
Piston
Pump
Purge unit
Fig. 4-63 Pumping Operation State Detection Mechanism
RECORDING SECTION
Carriage
Home position sensor
Actuator
Pumping operation
control cam
1
2
3
4
5
6
ït
çi
4–55
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