ET-16600 / L15150 Series

User's Guide

> Solving Problems > Printing, Copying, Scanning, and Faxing Quality is Poor > Print Quality is Poor > Striped Patterns Appear

Striped Patterns Appear

The bidirectional printing setting is enabled.

Solutions

When printing on plain paper, disable the bidirectional setting.

During bidirectional (or high speed) printing, the print head prints while moving in both directions, and vertical lines may be misaligned. Disabling this setting may slow down printing speed but improve print quality.

  • Control panel

    Select Settings > General Settings > Printer Settings, and then disable Bidirectional.

  • Windows

    Clear Bidirectional Printing on the printer driver’s More Options tab.

  • Mac OS

    Select System Preferences from the Apple menu > Printers & Scanners (or Print & Scan, Print & Fax), and then select the printer. Click Options & Supplies > Options (or Driver). Select Off as the High Speed Printing setting.

The print quality is set to low.

Solutions

When printing on photo paper, print using a higher quality setting.

  • Control panel

    Select Best as the Quality on the Advanced tab in print settings.

  • Windows

    Select High from Quality on the printer driver's Main tab.

  • Mac OS

    Select Fine as Print Quality from the print dialog's Print Settings menu.

The print head nozzles may be clogged.

Solutions

Use the Print Quality Adjustment feature. If you have not used the printer for a long time, the print head nozzles may be clogged and ink drops may not be discharged.