As the cam rotates, it shields the sensor light of the photointerrupter-based pump cam sensor or allows it to be transmitted. the status of the purge unit, such as

capped, suction, and wiping, is detected in a Combination of the status of detection by the pump cam sensor and the control of pump motor rotation by the pump

encoder sensor.

Upper cover lock switch

Agitation cam sensor

Head management sensor

Ink tank cover switch

Pressure release switch

F-2-24

Valve open/closed

detection sensor

Pump cam sensor

Pump encoder

F-2-25