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imageCLASS LBP8780
imageCLASS LBP8780x Support
FAQs & troubleshooting

Unevenness/Smudge Marks Appear

Content Id: 8201978800


White Streaks Appear/Print Density Is Uneven

Is toner running low?

Check how much toner is left, and replace the toner cartridge as necessary. For details on the procedure for replacing the toner cartridge, see the "e-Manual" (HTML manual) in the CD-ROM supplied with the printer.

Has the toner cartridge reached its life expectancy?

The inside of the toner cartridge may be degraded. Replace the toner cartridge. For details on the procedure for replacing the toner cartridge, see the "e-Manual" (HTML manual) in the CD-ROM supplied with the printer.

Toner Smudges and Splatters Appear

Are you using appropriate paper?

Check usable paper, and replace with appropriate paper.

Usable Paper

Streaks Appear on Printouts

Are you using appropriate paper?

Check usable paper, and replace with appropriate paper.

Usable Paper

Change the [Special Print Adjustment A] setting. The improvement effect becomes greater as the mode number becomes larger. Try in order from [Mode 1].

- Setting in the Printer Driver

[Finishing] tab [Advanced Settings] [Special Print Adjustment A] Select the mode

- Specifying Settings in the Setting Menu of the Operation Panel

For details on the procedure for setting, see the "e-Manual" (HTML manual) in the CD-ROM supplied with the printer.

NOTE:

As the improvement effect is increased, the print density becomes lighter. In addition, the edges may be blurred or roughness may be slightly emphasized.

If you have changed the printer driver settings, the improvement effect will be achieved only when printing from the printer driver. To achieve the improvement effect in all print jobs, change the settings from the operation panel.

The problem may be solved if you change the paper type or vironmental conditions.

Are printouts smudged when you print soon after the toner cartridge is replaced or when you print for the first time in a long time?

Change the [Special Print Adjustment B] setting. The improvement effect becomes greater as the mode number becomes larger. Try in order from [Mode 1].

- Setting in the Printer Driver

[Finishing] tab [Advanced Settings] [Special Print Adjustment B] Select the mode

NOTE:

As the improvement effect is increased, the print speed will be slower.

Back of Paper Is Smudged

Is the loaded paper smaller than the size specified in the print data?

Check whether the size specified in the print data matches that of the loaded paper.

Printouts Are Grayish

Is the installation site of the machine exposed to direct sunlight?

Move the machine to a location sheltered from direct sunlight.

Are you using heavy paper?

Set ⋖Dark Prt Reduct Mode⋗ to any of ⋖Mode 1⋗ to ⋖Mode 4⋗ according to the paper type. For details on the procedure for setting, see the "e-Manual" (HTML manual) in the CD-ROM supplied with the printer.

NOTE:

If printouts of plain paper are grayish, set to ⋖Mode 4⋗.

If this mode is selected, lines may be thinner.

Afterimages Appear on the Blank Area

Are you using appropriate paper?

Check usable paper, and replace with appropriate paper.

Usable Paper

Has the toner cartridge reached its life expectancy?

The inside of the toner cartridge may be degraded. Replace the toner cartridge. For details on the procedure for replacing the toner cartridge, see the "e-Manual" (HTML manual) in the CD-ROM supplied with the printer.
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