The contact detects the status of contact from voltage changes in the flexible cables on the carriage side that come into contact with two terminals of the printhead

with remote contact surfaces, the power terminals and GND terminal.

Multi sensor

The photo-reflection-type multi sensor is composed of four LEDs (red, blue, green and infrared) and two light-sensitive sensors. It detects the leading edge, skewing,

and width of media and is used for adjustment of the registration, head height, and color calibration.

During head adjustment, the light reflected by the infrared LED and green LED is detected by two light-sensitive sensors to calculate the head height from the

difference between the measurements.

- Service mode: After SERVICE MODE > ADJUST > GAP CALIB. has been carried out, pass paper to make sure that it is detected properly.

LED(blue)

LED(green)

Infrared sensor

F-2-40

LED(red)

Infrared LED

Media

Platen

Chapter 2

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