If your Brother printer streaks on paper, you’re not alone. Streaks, lines, smudges, or faded prints are among the most common print quality problems affecting Brother laser and inkjet printers. Fortunately, most streaking issues can be resolved without replacing your printer.

In this guide, you’ll learn why your Brother printer leaves streaks on paper, how to identify the root cause, and the best troubleshooting methods to restore crisp, professional-quality prints.

What You’ll Learn

• Common causes of Brother printer streaks
• How to identify different types of streaks
• Step-by-step troubleshooting methods
• How to clean the drum and print head
• Toner and ink cartridge solutions
• Paper-related printing problems
• Preventive maintenance tips
• Frequently asked questions

Why Is Your Brother Printer Streaking on Paper?

Print streaks occur when the printer cannot transfer ink or toner evenly onto the paper. The problem may be caused by dirty internal components, worn consumables, incorrect paper, or printer maintenance issues.

Common causes include:

• Dirty print head
• Clogged ink nozzles
• Worn drum unit
• Damaged toner cartridge
• Dirty corona wire
• Low-quality paper
• Incorrect paper settings
• Excess moisture in paper
• Printer roller contamination
• Outdated printer firmware

Identifying the exact cause is the first step toward fixing the issue.

Identify the Type of Streaks on Your Printed Pages

Different streak patterns often point to different hardware problems.

Streak Type	Possible Cause
Vertical black lines	Dirty drum or corona wire
Horizontal streaks	Clogged print head
Toner smears	Fuser or toner cartridge
Ink smudges	Wet paper or print head
Faded streaks	Low toner or low ink
Repeating marks	Damaged drum roller

Matching the streak pattern with the likely cause makes troubleshooting much easier.

Clean the Print Head on Brother Inkjet Printers

Inkjet printers commonly develop clogged nozzles, especially if they are not used regularly.

To clean the print head:

1. Open the printer’s maintenance menu.
2. Select Print Head Cleaning.
3. Choose the affected color or clean all colors.
4. Wait for the cleaning cycle to finish.
5. Print a nozzle check page.

If streaks remain, repeat the cleaning process up to three times. Excessive cleaning may waste ink, so avoid running unnecessary cycles.

Clean the Drum Unit and Corona Wire on Brother Laser Printers

Laser printers use a drum unit and corona wire to transfer toner onto paper. Dust or toner buildup on these components often causes vertical streaks.

Follow these steps:

1. Turn off the printer.
2. Open the front cover.
3. Remove the toner and drum assembly.
4. Slide the green corona wire tab from one end to the other several times.
5. Return the tab to its home position.
6. Reinstall the drum assembly.
7. Print a test page.

Cleaning the corona wire regularly helps prevent recurring streaks.

Inspect the Toner or Ink Cartridge

Damaged or low cartridges are another common reason for poor print quality.

Check for:

• Low toner or ink levels
• Leaking cartridges
• Physical damage
• Improper installation
• Expired consumables

If necessary, replace the cartridge with a compatible Brother cartridge to ensure consistent print quality.

Check the Drum Unit for Wear

Brother drum units have a limited lifespan. A worn drum may produce repeating streaks, spots, or ghost images.

Signs that the drum needs replacement include:

• Repeating vertical marks
• Dark bands across pages
• Uneven toner distribution
• Drum warning message on the printer display

Most Brother printers display the remaining drum life through the control panel or printer software.

Use the Correct Paper and Print Settings

Paper quality plays a major role in print performance.

For the best results:

• Use clean, dry paper.
• Avoid damp or curled sheets.
• Match the paper type in the printer settings.
• Store paper in a dry environment.
• Load paper correctly into the tray.

Incorrect media settings may cause toner to fuse improperly, resulting in streaks or smudges.

Update the Brother Printer Driver and firmware.

Software problems can occasionally affect print quality.

Check for:

• Updated printer drivers
• Firmware updates
• Operating system compatibility
• Print spooler issues

Installing the latest software improves printer stability and may resolve persistent printing problems.

Run a Print Quality Test

Most Brother printers include a built-in print quality test.

The report helps identify:

• Missing colors
• Blocked nozzles
• Drum defects
• Toner distribution problems
• Alignment issues

Compare the printed test page with Brother’s diagnostic guidelines to determine the next troubleshooting step.

Prevent Brother Printer Streaks on Paper

Regular maintenance helps keep your printer producing sharp, clean documents.

Follow these best practices:

• Print at least once a week to prevent ink from drying.
• Clean the printer interior every few months.
• Replace toner and drum units when recommended.
• Store paper in a cool, dry place.
• Avoid touching the drum surface.
• Use genuine or high-quality compatible consumables.
• Update printer firmware regularly.
• Run periodic print quality checks.

A simple maintenance routine can significantly reduce print defects and extend the life of your Brother printer.

Frequently Asked Questions

Why does my Brother printer leave black streaks on paper?

Black streaks are usually caused by a dirty drum unit, contaminated corona wire, damaged toner cartridge, or worn drum.

Why are there horizontal lines on my Brother printer output?

Horizontal streaks often indicate clogged print head nozzles on inkjet models or toner distribution problems on laser printers.

Can low toner cause streaks?

Yes. Low toner can create faded text, uneven printing, and streaks across the page.

How often should I clean my Brother printer?

Light cleaning every two to three months and routine print quality checks help prevent streaks and other print quality issues.

Should I replace the drum or toner first?

If the toner cartridge is full but streaks continue and repeat at regular intervals, the drum unit is more likely to be the problem.

Conclusion

If your Brother printer streaks on paper, the issue is usually related to the print head, drum unit, toner cartridge, paper quality, or printer maintenance. By identifying the type of streak and following the appropriate troubleshooting steps, you can restore excellent print quality without costly repairs. Regular cleaning, timely replacement of consumables, and proper printer maintenance will help keep your Brother printer producing sharp, streak-free documents for years to come.