Image Adjustment - Ricoh B202 Service Manual

IMAGE ADJUSTMENT

3.2 IMAGE ADJUSTMENT
3.2.1 SCANNING
Check the printing registration/side-to-side adjustment and the blank margin
adjustment before you do the following scanner adjustments.
NOTE: Use a C4 test chart to do the following adjustments.
Scanner sub-scan magnification
1. Put the test chart on the exposure glass. Then make
a copy from one of the feed stations.
2. Check the magnification ratio. Adjust with SP4-008 if
necessary.
Standard: ±1.0%.
Scanner leading edge and side-to-side registration
1. Put the test chart on the exposure glass. Then make
a copy from one of the feed stations.
2. Check the leading edge and side-to-side registration.
Adjust the following SP modes if necessary.
Standard: 0 ± 2mm.
Leading Edge Registration
Side-to-Side Registration
B202/B178/B180
SP mode
SP4-010-001
SP4-011-001
3-2
A
A: Sub-scan magnification
B178R505.WMF
A
B
B178R506.WMF
A: Leading Edge Registration
B: Side-to-side Registration
SM