DC controller also detects the presence of the toner collection unit by monitoring the toner collection unit switch.

Figure 1-28ITB cleaning mechanism

DC controller

SW6

ITB

Toner collection unit switch

ITB residual toner full sensor

Residual toner feed screw

Cleaning blade

ITB cleaner

Toner collection unit

M1

ITB motor

Calibration

The product calibrates itself to print a high-quality image. The calibration corrects a color-misregistration and color-density variation caused by environment changes or variation inherent in the product. The product performs the following calibrations:

Color-misregistration control

Environment change control

Image stabilization control

ENWW

Image-formation system 41

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HP Enterprise CP5525 manual Calibration, SW6 ITB