Canon iPF6100 - imagePROGRAF Color Inkjet Printer, Service Manual

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Chapter 2
2-66
2.5.3 Carriage system
0016-8206
F-2-50
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.
When color calibration is executed, a color chart printed is read with three-color LED (red, blue, green), so color
correction is implemented on the basis of the readings.
Ink mist adhering to the sensor could deliver incorrect measurement readings when color calibration is executed.
If the ink dot count exceeds a tolerance, the service error (E194-4034) would occur. If it does, execute service
mode: SERVICE MODE > ADJUST > GAP CALIB. after the multisensor has been replaced to clear the dot
count.
Lift cam sensor
Linear encoder sensor
Multi sensor