How to Fix Streaky Prints

If your printout has horizontal lines running across the page, gaps where text or color should be, or pale stripes cutting through an otherwise normal image, you're dealing with streaky prints. Before you do anything, answer one question: is your printer an inkjet or a laser? Inkjet and laser printers streak for completely different reasons, and the fix for one type can actively damage the other. Laser toner cleaning procedures can ruin an inkjet printhead, and running repeated cleaning cycles on a laser printer accomplishes nothing because laser printers don't have nozzles to clean.

Not sure which type you have? Check the cartridges. If they contain liquid ink, it's an inkjet. If they contain a fine dry powder (toner), it's a laser. Our inkjet vs laser comparison covers the differences in detail.

Fixing Streaks on Inkjet Printers

Inkjet streaks are almost always caused by clogged nozzles. The printhead has hundreds of microscopic nozzles that fire ink droplets onto the page. When ink dries inside a nozzle, typically because the printer sat idle for a week or more, that nozzle stops firing and leaves a gap in the output. Air bubbles trapped in the ink path and microscopic debris can cause the same symptom.

The fix ladder

Work through these steps in order. Each one is more aggressive than the last, so start gentle and escalate only if the previous step didn't work.

1. Print a nozzle check pattern. This is your diagnostic baseline. Our nozzle check test page prints fine lines in each ink color. Gaps or missing segments tell you exactly which channels are clogged.
2. Run one software cleaning cycle. Access it from your printer's maintenance menu (Windows: Printer Properties → Maintenance tab; macOS: System Settings → Printers → Options & Supplies → Utility).
3. Wait 30 minutes, then print another nozzle check. The waiting period lets the cleaning solution dissolve the clog. Rushing to a second cycle immediately gives the first one no time to work.
4. If still streaky, run one more cleaning cycle. Wait another 15 minutes and retest.
5. Stop at two cleaning cycles. Each cycle forces ink through the nozzles at pressure and wastes 2–5% of every cartridge. On Canon and HP thermal printheads, excessive cleaning also stresses the heating elements. More than two cycles rarely fixes what two couldn't.
6. Manual printhead cleaning is the next step for printers with removable printheads. Soak the printhead in warm distilled water for 1–4 hours. Our complete nozzle unclogging guide covers the full procedure including the tissue test, drying, and when to use commercial cleaning solution.
7. Printhead replacement is the last resort. On printers where the printhead is built into the cartridge (many HP DeskJet and ENVY models), replacing the cartridge replaces the head, and the problem is solved. On printers with a separate printhead, see the brand-specific notes below.

Brand-specific notes

Canon Pixma: Printheads are user-replaceable on most models. The QY6-0082 fits the MG5720/MG6820/TS5020 series ($35–50 on Amazon). The QY6-0089 fits newer TS models ($40–55). Pop the latch under the cartridge carriage cover, slide the old head out, slide the new one in. Canon thermal heads are among the easiest to maintain.

Epson: Piezoelectric printheads are permanently installed, and you cannot remove them without disassembling the printer. If two cleaning cycles don't fix the streaks, skip straight to the syringe method in our nozzle unclogging guide. Professional printhead replacement on Epson consumer models costs $100+ and is rarely worth it on printers under $200.

HP: It depends on the model. DeskJet and ENVY printers often use cartridges with the printhead built in, so replace the cartridge and the streaking stops. OfficeJet Pro and some LaserJet models have separate permanent printheads that are more expensive to replace ($50–65). Check HP's parts store with your exact model number. Our HP guide has model-specific instructions for running diagnostics.

Fixing Streaks on Laser Printers

Laser printers don't have nozzles, so the inkjet fixes above don't apply. Laser streaks come from three sources: low toner, a damaged drum, or a dirty corona wire. The streak pattern tells you which one it is.

How to read the streak pattern

• Consistent light streaks or faded vertical bands: Low toner. The cartridge can't distribute toner evenly across the drum.
• Repeating marks at regular intervals: Damaged drum. Measure the gap between repeating defects. If it matches the drum circumference (94mm on most Brother DR-series drums, 75mm on many HP drums), the drum surface has a scratch, nick, or spot of hardened toner that prints the same mark on every rotation.
• Dark vertical streaks or smudges: Dirty corona wire (also called the charge roller on some models). The corona wire applies a uniform charge to the drum surface. When it's coated with toner dust, the charge is uneven and excess toner sticks in streaks.

Fixes

Shake the toner cartridge. Remove it from the printer, hold it horizontally, and rock it gently side to side five or six times. This redistributes toner that has settled to one side of the cartridge. It sounds too simple, but it genuinely works for light streaks caused by low toner and can buy you 50–100 more pages.

Clean the corona wire. On Brother printers, the drum unit has a green or blue sliding tab on the top edge. Slide it back and forth three or four times, then return it to its home position. On HP printers where the toner and drum are integrated in one cartridge, the corona wire is inside the cartridge. Wipe it carefully with a dry, lint-free cloth if accessible.

Replace the drum unit. If cleaning doesn't fix repeating marks, the drum surface is physically damaged. On Brother and Lexmark printers, the drum is a separate unit from the toner (Brother DR-series, $30–50). On most HP laser printers, the drum is integrated with the toner cartridge, so replacing the cartridge replaces the drum.

The diagnostic test

Print our solid black test page. Streaks on a solid black page are dramatically easier to see and diagnose than streaks on a page with mixed content. Look at the page under angled light, because toner scatter and drum defects that are invisible head-on become obvious at a low angle. Our black and white test page provides additional grayscale gradients that can reveal subtle toner distribution issues.

When It's Not Streaks

Not every print defect is a streak. If your problem doesn't match the descriptions above, one of these might be a better fit:

• Faded all over (not stripes, just everything is too light): This is a supplies issue, not a streak. Check ink or toner levels. For inkjet, the printhead might be fine but the cartridge is nearly empty.
• Colors are shifted or wrong (but no missing lines): This is a calibration problem, not a clog. See our color calibration guide and print our individual colors test page to isolate which channel is off.
• Smudges that rub off the page (laser only): This is a fuser problem. The fuser unit bonds toner to paper using heat (around 200°C). If prints smudge when you run a finger across them, the fuser isn't reaching the right temperature. Fuser replacement is not a DIY job on most laser printers, as it involves high-temperature components. Contact the manufacturer or a service technician.
• Misaligned text or images (content is printed but shifted): This is an alignment issue, not a print quality defect. Print our alignment test page and run your printer's built-in alignment utility.

For a broader diagnostic starting point, our printer troubleshooting guide covers every common printer problem with symptom-based navigation.