Scanning; Registration: Platen Mode; Magnification; Sub Scan Magnification - Gestetner B003 Service Manual

3.21.2 SCANNING

Before doing the following scanner adjustments, perform or check the printing
registration/side-to-side adjustment and the blank margin adjustment.
NOTE: Use an OS-A3 test chart to perform the following adjustments.

Registration: Platen Mode

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.
Leading Edge
Side-to-side

Magnification

Use an OS-A3 test chart to perform the following adjustment.

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 (Scanner
Sub Scan Magnification) to adjust if necessary.
Specification: ±0.9%.
SM
COPY ADJUSTMENTS: PRINTING/SCANNING
SP mode
SP4-010
SP4-011
3-77
A
B
B004R508.WMF
A: Leading Edge Registration
B: Side-to-side Registration
A
B004R510.WMF
A: Main scan magnification
B003/B004/B006/B007