Overview

The paper feed path is extremely long when many peripheral units are installed. In such a long path, the cumulative effect of paper skew or deviation in side-to-side registration may require adjustment.

• Skew [A] occurs when the trailing edge of the paper rotates away from the direction of paper feed.

• If side-to-side registration shift [B] occurs, the sheet remains straight but shifts left or right away from center of the paper path.
  

  

  • Before adjusting skew manually, be sure to enter the SP mode and set SP1206 to "2" (OFF). This disables side-to-side registration in the main machine’s registration unit.

Scales

• Skew and side-to-side registration are checked with graduated scales (shown below) where paper exits the units.
  
• The scales are provided so that you can visually check and measure the amount of skew or deviation in side-to-side registration.
• A scale for detecting skew and checking side-to-side registration ("S-to-S") is provided on the following peripheral units.
• Correction for both skew and side-to-side registration are possible.

Use either the rear scale or front scale, depending on the type of paper used in your area:

• Rear [A]: DLT SEF (LT LEF for Ring Binder)
• Front [B]: A3 SEF (A4 LEF for Ring Binder)
  

The illustrations show where the scale for each peripheral unit is located:

• [A]: DLT/ [B]: A3

The illustration shows the scale on the left side of the Booklet Finisher tray. The same scale is at approximately the same position (paper exit) for the following units:

• Multi Folding Unit: Proof Tray, or Left Exit
• Ring Binder: Left Exit
• High Capacity Stacker: Proof Tray

In the illustration below:

• The RED lines indicate the single-piece brackets where adjustments can be done to eliminate skew and to correct side-to-side registration.

• The GREEN lines indicated 2-piece joint brackets where adjustment is not possible (between the finisher and trimmer unit).
  

  Unit	Name	Comment
  [1]	LCIT
  [2]	Main Machine
  [3]	Decurl Unit (inside main machine)	Inside main machine
  [4]	Cover Interposer Tray
  [5]	Multi Folding Unit
  [6]	Ring Binder
  [7]	High Capacity Stacker
  [8]	Finisher	Either finisher
  [9]	Trimmer Unit (Joint Brackets x2)	Joint Brackets x2

Note: The Trimmer Unit [9] does not have the single bracket for the upstream unit that allows side-to-side adjustment with shims (described below).

Here are some general rules for testing and adjusting for paper skew or a shift in side-to-side registration.

1. After installation of each peripheral device, do some test prints and check for the presence of skew, and check that side-to-side registration is correct.
2. When you detect a problem with skew or side-to-side registration, do the adjustment on the joint bracket attached to the peripheral unit upstream of the unit where the problem occurred.
3. Side-to-side registration is corrected by shifting the upstream joint bracket left or right. (See the next procedure.)
4. Skew is eliminated by inserting spacers (shims) under the rear or front end of the joint bracket. These attached by screws to the peripheral units before they leave the factory.