BackForward

User GuidePro C7500/C7500H

Horizontal Streaks (Synthetic Paper)

When printing halftone images is performed synthetic paper, multiple white streaks appear perpendicular to the paper feed direction.

Illustration of Horizontal Streaks: Synthetic Paper

Cause:

The electrical charge on high-resistance paper is high. When such paper enters the fusing nip, toner blasting occurs due to electrical discharge, resulting in horizontal streaks.

Occurrence conditions:

  • When printing is performed on synthetic or other high-resistance paper

  • Printing is performed at low temperature or humidity

  • Halftone images are printed

Solutions:

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

2In [Detailed settings] for the custom paper you are using, select 1214: [Paper Transfer Output], and then adjust the values in the following settings in steps of ±1 according to the mode in use.

  • 1214-01: Paper Transfer Output: BW: Side 1

  • 1214-02: Paper Transfer Output: BW: Side 2

  • 1214-05: Paper Transfer Output: FC/FCS: Side 1

  • 1214-06: Paper Transfer Output: FC/FCS: Side 2

  • 1214-09: Paper Transfer Output: FCS: Side 1

  • 1214-10: Paper Transfer Output: FCS: Side 2

  • 1214-13: Paper Transfer Output: S: Side 1: Clear/Special

  • 1214-14: Paper Transfer Output: S: Side 1: White

  • 1214-15: Paper Transfer Output: S: Side 1: Metallic

  • 1214-17: Paper Transfer Output: S: Side 2: Clear/Special

  • 1214-18: Paper Transfer Output: S: Side 2: White

  • 1214-19: Paper Transfer Output: S: Side 2: Metallic

3Print the image. Has the problem been resolved?

Yes

Finished!

No

Go to the next step.

4In 1214: [Paper Transfer Output], further adjust the values in the applicable settings in steps of ±1.

5Print the image and check if there are any problems such as faintness or white spots.

Yes

No further improvement is likely.

No

Finished!

Note

  • Select "Clear/Special" when using Neon Yellow, Neon Pink, or Invisible Red. Select "Metallic" when using Gold or Silver.