(9) Adjustment of the Leading Edge Registration
Full Size
◆Requirement
• Ready a test chart (A3 or 11" × 17") as shown on the
left. Draw a line across the test chart at a point 20
mm from the leading edge and use it as the
reference line.
Dimension A at the center on the copy should meet
the following requirements.
Mag. Ratio Dimension A (mm)
Full Size (100 %) 20.0 ±1.5
Enlargement (200 %) 40.0 ±3
Reduction (50 %) 10.0 ±1.5
•
Setting value range: 30 to 70
•
Movement equivalent to 1 step of setting value: 0.28 mm
◆Important
•
After having set the copier into the Adjust Mode, make two single copies and use the second
copy for the check. (The first copy represents the data before adjustment.)
•
When full size leading edge registration has been adjusted, it affects leading edge registration in
the enlargement and reduction mode. Be sure, therefore, to check for registration in these
modes, too.
1. Place the test chart face down on the Original Glass
and align its rear left corner with the marker on the
Original Width Scale on the left side of the platen.
Then, lower the Original Cover.
2. Make two single copies in full size mode (100 %) and
check for leading edge registration on the second
copy.
(If it meets the requirement, go to "Adjustment of
Enlargement Leading Edge Registration.")
D-57
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