Gestetner G060 Service Manual page 450

IMAGE ADJUSTMENT
3.3 IMAGE ADJUSTMENT
3.3.1 PRINTING
Leading edge registration
See the service manual for the printer mainframe.
Side-to-side registration
See the service manual for the printer mainframe.
3.3.2 SCANNING
Before doing the following scanner adjustments, perform or check the printing
registration/side-to-side adjustment and the blank margin adjustment.
NOTE: Use a C4 test chart to perform the following adjustments.
Scanner sub-scan magnification
1. Place the test chart on the exposure glass and make a
copy from one of the feed stations.
2. Check the magnification ratio. Use SP4-008 to adjust if
necessary.
Standard: ±1.0%.
Scanner leading edge and side-to-side registration
1. Place the test chart on the exposure glass and make a
copy from one of the feed stations.
2. Check the leading edge and side-to-side registration,
and adjust them with the following SP modes if
necessary. Standard: 0 ± 2mm.
Sub-scan
Main-scan
G570
SP mode
SP4-010
SP4-011
3-2
A
A: Sub-scan magnification
A
B
G570R908.WMF
A: Leading Edge Registration
B: Side-to-side Registration
G570R910.WMF
SM