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User GuidePro C7500/C7500H

Mottling of Uneven Density on Half-Tone Images

Mottling occurs in halftone sections.

Illustration of Uneven Density: Mottling

Cause:

Occurs when the speed of the intermediate transfer belt and the speed of the paper feed are different.

Solution:

1If the paper is not registered as custom paper, register the brand of the paper.

2In [Detailed settings] for custom paper, select 1341: [Motor Speed] and check the value in 02: [Paper Transfer Belt].

If it is "0.5%" or below, go to the next step.

If not, there is no other solution.

3Decrease the value in [Paper Transfer Belt] by 0.1%.

Note

  • Errors may occur depending on the degree of adjustment and conditions. In such a case, contact your service representative.

  • Decreasing the paper transfer roller speed may cause the image to expand or contract in the subscanning direction. Such a problem may be resolved by increasing the value for [Image Magnification] in [Manual Adjustment] in [Adjust image position] on the [Media] hub.

4Print the image. Has the problem been resolved?

Yes

Finished!

No

Start over from Step 2.