5-1
5.1
Both Sides Adjustment
5
Maintaining the Finishing Quality
5.1
Both Sides Adjustment
Both Sides Adjustment
When performing the duplex printing, you can adjust a misalignment between the front and back sides to align the
printing positions on the front and back sides. This task is referred to as Both Sides Adjustment.
A heat impact of the
fixing unit
may cause a slight enlargement or reduction of paper during printing. The impact level
varies depending on the type or weight of paper, therefore, if you have changed paper to be loaded into a tray, be sure
to carry out the Both Sides Adjustment.
Tips
Two methods are available to carry out the Both Sides Adjustment: entering from [Paper Setting] and from [Both Sides]
on the [MACHINE] screen. This guide describes how to enter from [Paper Setting] for adjustment.
Reference
For information about how to enter from [Both Sides], refer to the
HTML User's Guide
.
Adjustment flow
Follow the procedure below to proceed the Both Sides Adjustment.
A
Check the reference position of the print side
To judge whether a print position is misaligned, the required reference position adjustment must be
completed on this machine.
Before starting the Both Sides Adjustment, check the adjustment value of the reference position. If
necessary, adjust it.
There are the following adjustment items to be checked. To check them, on the [MACHINE] screen, select
[Adjustment] - [Machine Adjustment] - [Printer Adjustment].
-
[01 Restart Timing Adjustment]
-
[02 Centering Adjustment]
-
[03 FD-Mag. Adjustment]
-
[04 CD-Mag. Adjustment]
First adjust the front side in the order of 03 -> 04 -> 01 -> 02, then adjust the back side in the same order.
For information about how to check or readjust the adjustment value, refer to the
HTML User's Guide
.
B
Making the Both Sides Adjustment for each tray
The following adjustment methods are available.
-
Scan Measurement Adjustment: the method used for adjusting the zoom ratio and printing position
of the back side based on those of the front side to match the appearance of the front and back
sides. Both Sides Adjustment is automatically carried out using the scanner function of this machine.
(page 5-2)
(
bizhub PRESS C1070P
/
bizhub PRESS C71hc
does not support the [Scan Meas.] adjustment.)
-
Gap Adjustment: the method used for aligning both sides with correction of the back side
magnification and print position based on the front side ones (page 5-10).
-
Chart Adjustment: the method used for aligning both sides with correction of the magnification and
print position of both front and back side (page 5-15).
-
Zoom and Image Shift Adjustment: the method used for fine adjustment after Scan Measurement
Adjustment, Gap Adjustment or Chart Adjustment, or the method used when the amount of
misalignment between both sides is figured out (page 5-22).
