What a test sheet reveals about horizontal banding

Horizontal bands are light or dark stripes that cross the printed page. They may show up in a photo, a block of color, or even plain text. A test sheet helps you see whether the marks affect one color or the whole print, but it cannot identify every faulty part by itself.

Print the Printer Test Page to compare color blocks, gray steps, lines, and text. The pattern gives you a useful first clue before you change printer settings or spend ink on maintenance.

Print and inspect a test sheet

1. Open the Printer Test Page and print it using your usual printer. Use one sheet of plain paper and select the correct paper size in the print dialog.
2. Look at the solid color blocks first. Check whether a stripe crosses one color, several colors, or all of them. Also note whether the stripe is pale, dark, or missing completely.
3. Inspect the gray steps and fine lines. Look for repeating light and dark bands, broken lines, or a change in density from one side of the page to the other.
4. Check the small text for gaps or uneven edges. Compare the printed sheet with the on-screen page, but remember that the browser and print settings affect the result too.
5. If the pattern is unclear, print one more copy without changing any settings. If the printer has its own nozzle check or print-quality page, print that too for comparison.

Keep the sheet flat and view it in even light. A faint band can be hard to see under a lamp that creates glare, and paper texture can resemble a very fine stripe.

What the bands can mean

Thin white gaps cross one or more color blocks

On an inkjet printer, missing lines in a color block often mean that some printhead nozzles are not firing. If gaps appear mostly in one color, that color's nozzle path or ink supply is a likely place to start. A nozzle check from the printer's own maintenance menu can help confirm it.

Wide pale or dark stripes cross most of the page

If several colors and the gray steps show similar bands, the issue may involve paper feeding, printhead alignment, or a print-quality setting rather than one color alone. Incorrect paper type or draft mode can make the printer lay down ink unevenly. The test sheet suggests where to look, but it does not tell you which setting or part is responsible.

The bands repeat at regular intervals

A repeating pattern that appears on multiple sheets can point to a feed mechanism or, on a laser printer, a toner, drum, transfer, or fuser problem. These parts move the image or paper through the printer. A browser test cannot determine which component is at fault, so compare with the printer's own test page before arranging a repair.

The test sheet looks clean, but documents still have bands

The printer may be working, while an app, driver, image, or document setting causes the problem. Try printing the same document from another app. If the bands only appear in one file, check its image quality and page scaling before running printer maintenance.

Lines or text look broken, but the color blocks are even

This points away from a simple missing-color problem. Check whether the paper is moving straight and whether the print mode is set for the paper you loaded. If the text has doubled edges rather than horizontal stripes, printhead alignment may need attention on an inkjet printer.

How to fix horizontal banding

1. Check the paper and print mode. Make sure the paper is flat, loaded in the right direction, and selected correctly in the print dialog. Turn off draft or economy mode for a comparison, and use a standard quality setting.
2. Print the page again from another app. If the second app prints cleanly, check the first app's page scaling, image quality, and printer options. If both show the same bands, continue with printer checks.
3. Check printer settings in Windows or macOS. In Windows 11, open Settings › Bluetooth & devices › Printers & scanners, select your printer, then open its printing preferences. On a Mac, open System Settings › Printers & Scanners, select the printer, and check its available options. Names and settings vary by printer.
4. Run an inkjet nozzle check. Use the printer's maintenance menu or its supplied printer utility. If the check shows missing lines, run one printhead cleaning cycle, then wait and print another check. Cleaning uses ink, so avoid running it repeatedly without checking the result.
5. Check alignment and paper feed. If the nozzle pattern is complete but bands remain, use the printer's alignment procedure if it has one. Remove and reload the paper, keeping its guides snug without bending the sheets.
6. Check a laser printer's own quality page. If its internal page has the same recurring bands, follow the printer's instructions for checking or replacing toner. Do not touch a drum or other imaging surface unless the manual specifically tells you to.
7. Update or reinstall the printer software. If the printer's internal page is clean but browser prints are banded, install the current driver or printer software from the printer maker, then test again.

When the printer may need service

If horizontal bands remain on the printer's own test page after the correct maintenance steps, the problem is more likely inside the printer than in your document. On an inkjet, a persistent missing-color pattern can indicate a blocked or failing printhead, or an ink delivery problem. On a laser printer, repeated marks may involve an imaging or paper-handling part.

Check the printer's warranty and service instructions before taking it apart. For an older, low-cost printer, compare the repair estimate with the cost of replacement. A test sheet is a diagnostic clue, not proof that a particular part has failed.

Why the printer's own test page is useful

The Printer Test Page checks what happens when a browser page goes through your print settings, driver, and printer. An internal printer test page takes a different route and can help separate printer hardware issues from a browser or computer problem. If both pages show the same bands, focus on printer maintenance or service. If only the browser page is affected, check the print dialog, driver, and app instead.