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 SP1-206-001 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.

    NameSkewS-to-SComment
    LCIT------Correction is done in the registration unit of the main machine.
    Other Peripheral UnitsYesYesCorrection for both skew and side-to-side registration are possible when the unit is attached to the upstream device with the single-piece bracket (see the red lines in the illustration later in this section).
  • 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 scale is located at the paper exit for each peripheral unit.
    The illustration shows the scale on the left side of the Booklet Finisher tray:


    [A]: DLT/ [B]: A3

  • 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 connecting brackets where the adjustment is not possible.

      No.Name
      [1]LCIT
      [2]Main Machine
      [3]Decurl Unit
      [4]Buffer Pass Unit
      [5]Two-tray Cover Interposer
      [6]Multi-folding Unit
      [7]One-tray Cover Interposer
      [8]Finisher (SR4110*1, SR4120, SR4130, SR5070*2, SR5080*2)

      *1 MP C8003 only
      *2 Pro C5200S/C5210S only

  • 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 connecting 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 connecting bracket left or right.
  4. Skew is eliminated by inserting spacers (shims) under the rear or front end of the connecting bracket. These attached by screws to the peripheral units before they leave the factory.