Canon Duplex Color B1, Service Manual

Page: 88 / 97

8
8
8-12
8-12
Adjustment > Overview > Side Registration Adjustment
Adjustment > Overview > Side Registration Adjustment
b. Adjustment for back side reading
1) Set a test chart on the original pickup tray upside down and make a 2-sided print.
2) Overlap the printed paper with the test chart.
3) Check that the rear side of the printed image is within the standard.
Standard: A </= 1 mm
Feed direction Feed direction
A
A
Image rear side of
test chart
Rear side of
printed image
Rear side of
printed image
Image rear side of
test chart
< If the image is displaced toward rear > < If the image is displaced toward front >
4) If it is out of standard, make an adjustment in service mode.
Lv. COPIER > ADJUST > ADJ-XY >
1
ADJY-DF2
If the image is displaced toward front, increase the value (image is moved toward rear).
If the image is displaced toward rear, decrease the value (image is moved toward front).
Changes per 1 unit: 0.1 mm
Adjustment range: 56 to 220 (default: 124)
5) Printout a test chart again and check that the image is within the standard.
•
•
Leading Edge Registration Adjustment
MEMO:
There are 2 adjustment methods; for front side reading (reader side scanner unit) and
for back side reading (DADF side scanner unit).
a. Adjustment for front side reading
1) Set a test chart on the original pickup tray and make a 1-sided print.
2) Overlap the printed paper with the test chart.
3) Check that the leading edge of the printed image is within the standard.
Standard: A </= 1 mm
Feed direction Feed direction
A A
Leading edge of
printed image
Image leading edge of
test chart
Image leading edge of
test chart
Leading edge of
printed image
< If the image is displaced toward trailing edge > < If the image is displaced toward leading edge >
4) If it is out of standard, make an adjustment in service mode.
Lv. FEEDER > ADJUST >
1 DOCST
If the image is displaced toward trailing edge, increase the value (image is moved forward).
If the image is displaced toward leading edge, decrease the value (image is moved
backward).
Changes per 1 unit: 0.1 mm
Adjustment range: -50 to +50
5) Printout a test chart again and check that the image is within the standard.
•
•