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User GuidePro C7500/C7500H

Paper Misfeeds or Double-Feeding Occurs

Cause:

If special paper is fed or fed in a different condition from general paper when generic settings are applied, it may cause paper misfeeds or double-feeding.

Occurrence conditions:

  • Coated paper is set

  • Paper with high smoothness is set

  • Printing is done at low temperature or humidity

  • Paper is severely curled

Solution:

1Measure the curl of the paper.

Load one sheet of paper on a flat surface, apply the scale to the leading edge of the paper, and measure the curl at the four edges. The maximum value is the curl value.

2Is the paper curl within the curl standard?

Acceptable curl amount varies depending on the basic weight of the paper.

Paper weight

Curl amount

Paper Weight 0 - 6

Face curl: 10 mm (0.4 inches)

Back curl: 10 mm (0.4 inches)

Paper Weight 7

Face curl: 10 mm (0.4 inches)

Back curl: 5 mm (0.2 inches)

Paper Weight 8

Face curl: 10 mm (0.4 inches)

Back curl: 3 mm (0.1 inches)

Paper Weight 9

Face curl: 10 mm (0.4 inches)

Back curl: 0 mm (0 inches)

Yes

Proceed to Step 5.

No

Go to the next step.

3Place the curled surface down on a flat surface. Hold the end of the paper and straighten it in the opposite direction to the curl direction so that the paper is rounded.

4Check if the curl has been reduced.

Yes

Finished!

No

Go to the next step.

5Fanning the paper.

For details, see Fanning the Paper.

Yes

Finished!

No

Go to the next step.

6Check if the curl has been reduced.

Yes

Finished!

No

Go to the next step.

7In [Detailed settings] for custom paper, adjust the fan level in 1351-02: [Fan Level].

8Check if the curl has been reduced.

Yes

Finished!

No

If the problem persists, repeat Step 7.

If the problem still persists, feed one sheet of paper at a time.