Gestetner G060, Service Manual

Page: 450 / 1106

IMAGE ADJUSTMENT
G570 3-2 SM
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.
SP mode
Sub-scan SP4-010
Main-scan SP4-011
A
G570R910.WMF
B
A
G570R908.WMF
A: Sub-scan magnification
A: Leading Edge Registration
B: Side-to-side Registration