Ricoh B230 Training Program page 81

More about the Adjustments
Sub scan line position for YCM
•
The adjustment of the sub-scan line position for YCM is based on
the line position for K (color registration).
−
The machine measures the gaps between the lines of each color in the pattern
on the transfer belt.
−
If the gaps for a color are not correct, the machine moves the image of the
color up or down the sub scan axis.
−
To do this, it changes the laser write timing for that color.
Main scan line position for KYCM
•
If the machine detects that the image is out of position in the main
scan direction, it changes the laser write start timing for each scan
line.
Magnification adjustment for KYCM
•
If the machine detects that magnification adjustment is necessary, it
changes the LD clock frequency for the required color.
Skew for YCM
•
The adjustment of the skew for YCM is based on the line position for K.
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