162 7 Maintenance
Determining the Adjustment Values
On the Color Registration Chart, there are two types of charts: Chart 1 (fast scan) and Chart
2 (slow scan).
The Chart 1 is used to adjust the color registration for the fast scan direction, which is
vertical to paper feed direction. The Chart 2 is used to adjust the color registration for the
slow scan direction, which is horizontal to paper feed direction.
The following explains how to determine the adjustment values for the fast scan and the
slow scan.
Fast Scan
On the Chart 1 of the Color Registration Chart, find the straightest line where the two black
lines and the colored line are most closely aligned for each color (Y, M, and C). If you find
the straightest line, make a note of the value (-9 to +9) indicated by the straightest line for
each color.
When the value is “0” for each color, you do not need to adjust the color registration for the
fast scan.
When the value is not “0”, enter the value using the procedure in "Entering the Adjustment
Values" (P. 163).
Slow Scan
On the Chart 2 of the Color Registration Chart, find the medium line within the range of white
area for each color pattern (Y, M, and C). If you find the medium line, make a note of the
value (-9 to +9) indicated by the medium line for each color.
When the value is “0” for each color, you do not need to adjust the color registration for the
slow scan.
When the value is not “0”, enter the value using the procedure in "Entering the Adjustment
Values" (P. 163).
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