Konica Minolta bizhub PRESS C1085 - Manual (Page 53)

bizhub PRESS C1100/C1085 6-3
6.1 Both Sides Adjustment 6
6 Maintaining the Finishing Quality
6.1 Both Sides Adjustment
6.1.1 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 load-
ed 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.
d
Reference
For information about how to enter from [Both Sides], refer to the [HTML User's Guide].
6.1.2 Adjustment flow
Follow the procedure below to proceed the Both Sides Adjustment.
1
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 nec-
essary, adjust it.
There are the following adjustment items to be checked. To check them, on the [MACHINE] screen, se-
lect [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].
2
Making the Both Sides Adjustment for each tray
The following two adjustment methods are available.
% Chart Adjustment: Available when an unclear misalignment is found between the front and back
sides. (page 6-4)
% Zoom, Image Shift: Available when the fine adjustment is required after the chart adjustment or
when a misalignment between the front and back sides is clear. (page 6-10)
d
Reference
If skewing or wrinkling occur during printing, adjust the registration loop amount before making the chart ad-
justment or the zoom and image shift adjustment. For details, refer to the [HTML User's Guide].
NOTICE
A high technical skill is required to adjust the reference position on the print side. Before carrying out this
adjustment, contact your service representative.