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Top Page > Troubleshooting: Post-Processing Option > Finishing Problems > High Capacity Stacker > Delivered Sheets Are Not Aligned

Delivered Sheets Are Not Aligned

Cause:

When sheets are delivered to the stacker tray, because of paper-to-paper friction, the paddle fails to pull the trailing edge back into the front guide, resulting in misalignment.

The paper edge stopper also fails to push back the protruding leading edge.

This is likely to occur if:

  • Thick (280 g/m2 [105 lb. Cover] or heavier), uncurled A3 or larger paper is used.

How the problem occurs

  1. An uncurled sheet is delivered to the stacker shift tray.

    w_m205a4127.png

  2. Strong friction occurs at the trailing edge so that the paddle cannot pull the sheet back and align the edges of the sheet with those of the stack.

    w_m205a4128.png

  3. The paper edge stopper fails to push back the protruding leading edge and align the sheet as required.

    w_m205a4129.png

  4. Stacked sheets are not aligned properly.

    w_m205a4130.png

Solution:

  1. Load the sheets the other way up.

  2. Print the image. Was the problem resolved?

    Yes: Finish

    No: Go to next step.

  1. In the [Adjustment Settings for Skilled Operators] menu, set [Adjust Paper Curl] to [Adjust _downward_curl.jpg Curl: Weak].

  2. Print the image. Was the problem resolved?

    Yes: Finish

    No: Go to next step.

  3. Set [Adjust Paper Curl] to [Adjust _downward_curl.jpg Curl: Strong].

  4. Print the image. Was the problem resolved?

    Yes: Finish

    No: Go to next step.

  5. Is just the first sheet misaligned?

    Yes: Finish

    No: Go to next step.

  6. Is it just some of the last sheets?

    Yes: Finish

    No: Contact your supervisor.

Note

  • The top sheet of each offset bundle of delivered sheets may protrude above the rest of the bundle by about 7 mm.

    w_m205a4122.png