Symptoms
- Horizontal or vertical streaks across printed pages
- Text or images look faded or patchy
- One color prints fine while another is streaky
- Streaks get worse the longer a cartridge has been in use
Likely causes
- CommonLow ink or toner levelAs a cartridge nears empty, print quality typically fades unevenly before it fully stops.
- CommonClogged inkjet print head nozzlesInk can dry and clog nozzles, especially if the printer sits unused for a while.
- PossibleDirty or worn toner drum (laser printers)A drum with buildup or wear produces streaky or uneven prints.
- PossibleUsing a refilled or off-brand cartridge with inconsistent ink/tonerThird-party cartridges vary in quality and can cause quality issues more often.
- Less commonDust or debris on the scanner glass (for copies) or print pathThis affects copies specifically rather than prints sent from a computer.
What to do
- Check the ink or toner level in the printer's app or on-screen display and replace any cartridge that's low or empty.
- Run the printer's built-in print head cleaning cycle from its menu or the manufacturer's printer utility software.
- Print a nozzle check pattern (usually in the same utility) to see which color or area is streaky.
- If streaks persist after one cleaning cycle, run it a second time, but avoid running it excessively since it uses extra ink.
- For laser printers, gently remove and reseat the toner cartridge, rocking it side to side first to redistribute toner evenly.
- If using a refilled or third-party cartridge, try a genuine manufacturer cartridge to see if quality improves.
- Wipe the printer's exposed print head contacts (if accessible) with a dry, lint-free cloth.
Tools and parts
- Lint-free cloth
Replacement ink or toner cartridgeSearch: “[printer model] ink cartridge replacement”
When to call a pro
If streaking continues after fresh cartridges and multiple cleaning cycles, the print head or drum unit may need professional service or replacement.
Safety
Generally low risk
Generally low risk for a careful person. Stop if anything looks different from what this guide describes.