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Color-misregistration control
Internal variations in the laser/scanners can cause the toner images to become misaligned. The color-
misregistration control corrects the following problems:
●
Horizontal scanning start position
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Horizontal scanning magnification
●
Vertical scanning start position
The DC controller forms a pattern of toner on the surface of the ITB and measures a misaligned length
with the RD sensor.
Figure 1-28 Toner patterns for calibration
ITB
RD sensor
Pattern of toner
The DC controller signals the formatter to perform the color-misregistration control when one of the
following events occur:
●
A cartridge or the ITB is replaced.
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A specified number of pages have printed.
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The formatter sends a command.
The DC controller determines an RD sensor failure and notifies the formatter if it detects data from the
RD sensor that is not in a specified range, when the product is turned on or when the color-
misregistration control starts.
Image-stabilization control
NOTE: The product contains a thermal sensor, located within the TCU level detection sensor, which
monitors the temperature in the cartridge area and uses this information to make adjustments during
CPR control.
ENWW Image-formation system 35