A printer printing lines across documents, photos, or graphics usually has a print-quality problem that needs attention. The cause may be as simple as low ink or incorrect paper settings, or it may involve clogged printhead nozzles, a toner cartridge, drum, rollers, or printer alignment.
Different line patterns can point to different causes. Horizontal lines are commonly linked to inkjet printhead or nozzle problems, while vertical lines may be associated with toner, drums, or paper-path components.
In this guide, you will learn how to diagnose a printer printing lines and fix common horizontal, vertical, faded, and streaky print problems.
Why Is My Printer Printing Lines?
There are several reasons why a printer printing lines problem can occur.
Common causes include:
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Clogged printhead nozzles
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Low or uneven ink levels
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Low toner
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Damaged ink or toner cartridge
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Dirty printer rollers
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Worn imaging drum
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Printhead misalignment
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Incorrect paper settings
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Draft or low-quality print mode
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Dust or debris inside the printer
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Damaged printer components
Inkjet printers often develop lines when one or more printhead nozzles become partially blocked. This can prevent ink from reaching the paper evenly.
Laser printers work differently. A laser printer printing lines may have problems with toner distribution, the drum, rollers, or other imaging components.
Identifying the line pattern first can make troubleshooting much faster.
Identify the Type of Lines Before Troubleshooting
Before trying to repair a printer printing lines, look carefully at the printed page.
Check whether the lines are:
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Horizontal
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Vertical
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Dark
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Faded
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Repeating
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One specific color
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Across the entire page
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Only visible in photos
The pattern often provides useful clues about what is causing the problem.
Horizontal Lines
Horizontal lines are especially common with inkjet printers.
Possible causes include:
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Clogged printhead nozzles
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Low ink
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Incorrect printhead alignment
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Wrong paper settings
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Draft-quality printing
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Printer banding problems
Vertical Lines
Vertical lines may be more common with laser printers.
Possible causes include:
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Toner cartridge problems
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Dirty rollers
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Worn imaging drum
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Paper-path contamination
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Damaged internal components
If the same vertical mark appears in exactly the same place on every printed page, an internal printer component may require inspection.
Check Your Ink or Toner Levels
When a printer printing lines problem appears, one of the first things to check is the ink or toner level.
Low ink can produce faded sections, missing colors, or broken horizontal bands.
Low or uneven toner may cause light streaks or areas where the print density changes.
Open your printer software or control panel and check the estimated ink or toner levels.
If you recently installed a new cartridge, make sure:
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The cartridge is seated correctly
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Protective tape has been removed
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Protective seals are fully removed
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The cartridge is compatible with the printer
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There is no visible damage
A badly installed cartridge can cause printer ink streaks even when it is completely new.
Run a Nozzle Check and Clean the Printhead
If an inkjet printer printing lines has horizontal gaps or missing colors, the printhead should be one of the first areas you test.
Most inkjet printers have maintenance tools for checking the nozzles and cleaning the printhead.
Print a Nozzle Check
Open your printer maintenance settings and look for:
Nozzle Check
Print the test pattern.
Look for:
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Broken lines
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Missing sections
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Faded colors
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Completely missing colors
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Uneven patterns
If sections of the test pattern are missing, a clogged printer nozzle may be responsible.
Run Printhead Cleaning
Use the printer's built-in Printhead Cleaning option.
Allow the cleaning cycle to finish, then print another nozzle check.
If the new pattern improves, the clog was probably causing the problem.
Avoid repeatedly performing deep-cleaning cycles one after another because printhead cleaning can consume a significant amount of ink.
If necessary, wait before performing another cleaning cycle.
Align the Printhead
If cleaning does not solve the printer printing lines issue, printhead alignment may be required.
Printer alignment ensures that each print pass is positioned correctly.
Depending on your printer model, look for options such as:
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Printhead Alignment
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Align Printer
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Cartridge Alignment
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Automatic Alignment
These settings are usually available under the printer's Maintenance or Tools menu.
Misalignment can cause:
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Broken text
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Uneven lines
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Horizontal bands
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Blurry edges
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Poor photo quality
Run the alignment process and follow any instructions shown on the printer or computer.
After alignment, print a test page to check whether the lines have disappeared.
How to Fix Printer Printing Horizontal Lines
A printer printing lines horizontally across the page usually suggests an inkjet printing or banding issue.
Try these steps in order:
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Check ink levels
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Print a nozzle-check pattern
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Run printhead cleaning
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Align the printhead
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Confirm the correct paper type
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Change print quality from Draft to Normal or High
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Print another test page
If the printer printing horizontal lines continues after cleaning, look at the nozzle-check pattern again.
If the same sections remain missing even after several reasonable cleaning attempts, the printhead or cartridge may require further attention.
Horizontal lines when printing photos can also appear if the wrong paper type is selected.
For example, printing on photo paper while the printer is configured for plain paper can affect ink placement and print quality.
How to Fix Printer Printing Vertical Lines
A printer printing lines vertically may require a different troubleshooting approach.
Vertical lines are often associated with laser printers, although inkjet printers can also show them.
Check the following components:
Toner Cartridge
Remove and inspect the cartridge according to the manufacturer's instructions.
A damaged or leaking toner cartridge can create repeated vertical streaks.
Imaging Drum
Some laser printers have separate imaging drums.
A scratched, worn, or contaminated drum can produce marks that repeat in the same area of each page.
Printer Rollers
Dirty rollers may transfer toner, dust, or other residue onto the paper.
Paper Path
Small pieces of paper, toner residue, or debris inside the printer may produce consistent lines as sheets move through the device.
If the vertical line appears in exactly the same location on every page, the issue may be related to a rotating printer component rather than the document itself.
Check Paper and Print Quality Settings
Not every printer printing lines problem is caused by hardware.
Incorrect paper or print-quality settings can also create banding and streaky output.
First, make sure the paper is:
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Clean
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Dry
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Flat
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Compatible with your printer
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Stored correctly
Avoid using damp, curled, or damaged paper.
Next, open your printer settings and make sure the selected paper type matches the paper loaded in the tray.
For example, if you are using glossy photo paper, choose the appropriate photo-paper setting.
Also check the print-quality setting.
If it is set to Draft, switch to Normal or High and print another test page.
Higher-quality modes generally use more precise ink or toner placement.
Clean the Printer Rollers and Paper Path
Dust and debris can also lead to a printer printing lines or streaks across paper.
Turn off the printer before checking accessible areas.
Look for:
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Paper dust
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Small torn pieces of paper
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Ink residue
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Toner residue
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Dirty rollers
Clean only the components that your printer manufacturer says are safe for users to access.
Do not force open internal areas or touch sensitive printer components unnecessarily.
If you use a laser printer, remember that the fuser and nearby internal parts can become extremely hot. Allow the printer to cool before inspecting the paper path.
Print a Test Page
A test page can help determine whether the printer printing lines problem comes from the printer itself or from a specific document or application.
Use the printer's built-in control panel or maintenance utility to print an internal test page.
If the lines also appear on that page, the issue is more likely related to:
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Ink
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Toner
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Printhead
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Drum
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Rollers
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Alignment
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Printer hardware
If the internal test page looks clean but a document prints with lines, the problem may be related to the application, driver, image file, or print settings.
Printer Printing Lines After Changing Ink
If your printer printing lines problem started immediately after replacing an ink cartridge, check the new cartridge carefully.
Make sure it has been installed correctly.
Remove any remaining protective tape or shipping material.
You should also run a nozzle check.
In some cases, air in the ink system or temporary ink-flow issues can produce missing sections shortly after installing a cartridge.
Run a standard printhead cleaning cycle if the nozzle test shows gaps.
If a specific color is completely absent, double-check that the correct cartridge has been installed in the proper position.
Printer Printing Lines Even After Cleaning
If a printer printing lines problem remains after printhead cleaning, do not assume another cleaning cycle will always fix it.
Check:
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Printhead alignment
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Ink or toner cartridge condition
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Paper type
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Print quality settings
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Drum condition
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Printer rollers
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Internal test page
If the nozzle-check pattern does not improve after reasonable cleaning attempts, the blockage may be severe or the printhead may be damaged.
For laser printers, printhead cleaning will not fix problems caused by a worn drum or damaged toner cartridge.
FAQs About Printer Printing Lines
Why is my printer printing horizontal lines?
Horizontal lines are commonly caused by clogged printhead nozzles, low ink, incorrect alignment, unsuitable paper settings, or draft-quality printing.
Why is my printer printing vertical lines?
Vertical lines can be caused by toner cartridge problems, a worn imaging drum, dirty rollers, or contamination inside the paper path.
Will cleaning the printhead fix printer lines?
Printhead cleaning may fix a printer printing lines problem when clogged inkjet nozzles are responsible. It will not repair problems involving a laser printer drum, toner cartridge, or damaged mechanical component.
Why is my printer printing lines after changing ink?
The new cartridge may be incorrectly installed, protective tape may still be attached, or the nozzles may require cleaning.
Why does my printer still print lines after cleaning?
The issue may involve alignment, a damaged cartridge, a worn printhead, drum problems, dirty rollers, or incorrect paper settings.
Can the wrong paper cause lines when printing?
Yes. Paper that is damp, damaged, unsuitable for the printer, or paired with the wrong printer setting can reduce print quality and create visible banding.
When Should You Replace a Cartridge or Get the Printer Serviced?
Sometimes basic maintenance will not solve a printer printing lines problem.
Consider replacing a cartridge or seeking professional service if:
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Lines remain after proper cleaning
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Nozzle checks continue showing missing sections
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The toner cartridge appears damaged
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The drum has visible wear or scratches
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Repeating lines appear in exactly the same location
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Print quality continues getting worse
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The printer makes unusual noises
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A replacement cartridge does not solve the issue
Avoid repeatedly running deep-cleaning cycles when there is no improvement, as this can waste ink without fixing a hardware problem.
Final Thoughts
A printer printing lines does not necessarily mean you need a new printer. Many line and streak problems can be solved by checking ink or toner levels, cleaning the printhead, correcting alignment, using the right paper settings, or inspecting the cartridge and rollers.
Start by identifying whether the lines are horizontal or vertical. Then check your consumables, print a test page, run a nozzle check for inkjet printers, and inspect the relevant printer components.
By troubleshooting the problem in the right order, you can often fix a printer printing lines issue and restore clean, consistent print quality without replacing the entire printer.
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