HP M750 series

controller also detects the presence of the toner collection unit by monitoring the toner collection unit
switch.
Figure 1-28 ITB cleaning mechanism
SW6
ITB
M1
DC controller
Toner collection unit switch
ITB residual toner full sensor
Cleaning blade
ITB cleaner
ITB motor
Residual toner feed screw
Toner collection unit
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
Color-misregistration control
The color-misregistration control corrects the misaligned color planes caused by the variation inherent in the
laser scanner units or cartridges. The color-misregistration control corrects the following:
●
Horizontal scanning start position
●
Horizontal scanning magnification
●
Vertical scanning start position
40 Chapter 1 Theory of operation ENWW