Printer Maintenance

How to Clean a Printer Safely: A Basic Care Routine

Printers collect more grime than most people expect. Paper sheds fine fibers every time it moves through the machine, scanner lids pick up fingerprints and smudges, and dust drifts in through vents and open trays. Left alone, that buildup can show up as specks on copies or pages that refuse to feed.

The good news is that basic cleaning needs nothing more than a lint-free cloth, a little water and some patience. This guide covers the parts you can safely clean, the parts to leave alone, and a realistic schedule. Your printer’s manual always takes priority, because designs differ between inkjet and laser models and between manufacturers.

Quick answer

  1. Turn the printer off and unplug it; let a laser printer cool.
  2. Wipe the exterior with a lint-free cloth lightly dampened with water.
  3. Clean the scanner glass and the underside of the lid, then dry them.
  4. Wipe the paper feed rollers with a barely damp lint-free cloth unless your manual says otherwise.
  5. Remove loose dust inside with a dry cloth only where the manual permits, avoiding the encoder strip, fuser, drum and electrical contacts.

Symptoms and possible causes

This guide applies if:

  • Copies or scans show spots, lines or shadows that are not on the original
  • Paper slips, feeds crookedly or picks up several sheets at once
  • Fine paper dust or loose toner is visible inside the front or top cover
  • The case, buttons or touchscreen look grimy or sticky
Possible causes, how to recognize them and where this guide covers them
Possible causeHow to recognize itCovered in
Smudges or debris on the scanner glass or lidMarks appear on copies and scans but not on computer printoutsStep 2
Glazed or dusty paper feed rollersMisfeeds, skewed pages, “no paper” messages with paper loadedStep 3
Paper dust and lint inside the machineVisible fluff near trays, occasional specks on pagesStep 4
Spilled or loose toner in a laser printerGray dust inside the cover, smears on the edges of pagesStep 4

Safety precautions

  • Turn the printer off and unplug it before cleaning anything other than the outside of the case.
  • Laser printers have a fuser that can be very hot right after printing. Wait at least 30 minutes, or longer if your manual says so, before reaching inside.
  • Never spray liquid directly onto the printer. Dampen the cloth instead, and wring it out until it is barely moist.
  • Do not use household vacuum cleaners or compressed air on loose toner. Fine toner can pass through ordinary filters, and blowing it spreads it into the room and deeper into the printer.
  • Do not open panels that need tools, and never force a cover or part.

1 Clean the outside of the printer

Dust on the case eventually finds its way inside through vents and trays, so start here.

  1. Power down and unplug

    Use the power button to shut the printer down normally, wait for it to finish, then unplug it. Shutting down properly lets an inkjet park and cap its printhead, which helps prevent the ink from drying out.

  2. Wipe the case with a damp cloth

    Wipe the top, sides and front with a lint-free cloth lightly dampened with water. Avoid solvents and abrasive pads, which can cloud plastic.

  3. Clean the control panel gently

    For buttons and touchscreens, use a dry or barely damp soft cloth. Some manufacturers allow a mild screen cleaner on displays; check your manual before using anything other than water.

2 Clean the scanner glass and lid

If marks appear on copies and scans but not on documents printed from your computer, the scanner is the most likely culprit, not the print engine.

  1. Wipe the flatbed glass

    Use a lint-free cloth lightly dampened with water and wipe in straight lines from one side to the other. Dry it with a second clean cloth to avoid streaks. Some manuals approve a non-abrasive glass cleaner applied to the cloth, never sprayed onto the glass.

  2. Clean the underside of the lid

    The white backing pad under the lid picks up smudges too, and they show up as gray patches on scans. Wipe it gently and let it dry.

  3. Clean the document feeder strip, if you have one

    Printers with an automatic document feeder usually have a narrow glass strip to the left of the main glass. A single speck there can cause a line down every page fed through the feeder, so wipe it carefully as well.

3 Clean the paper feed rollers

Rubber rollers pull each sheet into the printer. As they collect paper dust they turn smooth and start slipping.

  1. Find the rollers your manual describes

    Remove the paper tray and look for the rubber pickup rollers, usually just inside the tray opening. Rear-feed inkjets often have rollers visible from the top input slot. Your manual will show which rollers are meant to be user-cleaned.

  2. Wipe with a barely damp cloth

    Use a lint-free cloth lightly dampened with water, unless your manual specifies something else. Wipe each roller across its surface, turning it by hand if it moves freely. Do not force a roller that resists.

  3. Try a built-in roller cleaning routine

    Some printers offer a paper feed or roller cleaning option in the maintenance menu. Names vary by model; check the manual.

If misfeeds continue after cleaning, see our guide to clearing paper jams; worn rollers on some models can be replaced, but that is usually a parts job covered in the manufacturer’s documentation.

4 Remove dust from the inside, carefully

Interior cleaning is where most damage happens, so keep it light: remove loose dust from areas you can reach without tools, and never scrub components.

  1. Open only user-access covers

    Open the front or top covers you would use to change cartridges or clear jams. If a panel needs a screwdriver, leave it closed.

  2. Wipe loose dust with a dry cloth

    Use a dry lint-free cloth to pick up paper dust from the paper path and tray area. Lift dust away rather than pushing it deeper inside.

  3. Handle loose toner cautiously

    In laser printers, wipe small amounts of spilled toner with a dry cloth and avoid breathing the dust. Do not blow it out or vacuum it with household equipment. Wash toner off skin and clothing with cold water, since heat can set it.

  4. Close up and test

    Close all covers, plug the printer back in and print a test or status page to confirm everything works.

Parts never to touch: the encoder strip (a thin clear plastic strip running along the carriage path in many inkjets), the fuser in laser printers, the drum surface (the shiny green, blue or similar colored roller in laser printers), and any electrical contacts such as the copper or gold pads on cartridges and their holders. Oils from your skin or a scratch on these parts can cause print defects or errors.

5 Follow a simple care schedule

How often you clean depends on how much you print and how dusty your space is. Use this as a starting point and adjust it.

  1. Print regularly

    For inkjets, a page or two every week helps keep nozzles from drying out. Use the power button rather than a power strip so the printer can run its own maintenance.

  2. Store paper properly

    Keep paper wrapped in a dry place; damp paper sheds more lint and feeds poorly.

  3. Choose a clean spot

    Keep the printer away from open windows, pets and kitchens. A dust cover is fine while it is off, but never cover vents while it runs.

TaskHow oftenNotes
Wipe the exterior and ventsMonthlyDry or barely damp cloth
Clean scanner glass and lidMonthly, or when copies show marksDry thoroughly afterward
Clean paper feed rollersEvery few months, or when misfeeds startFollow the manual for roller locations
Remove interior dustWhen changing cartridges or tonerUser-access areas only
Print a test pageWeekly for inkjetsHelps keep nozzles active

Additional troubleshooting methods

Use the printer’s cleaning utilities

Many printers include maintenance tools in their control panel menu or in the manufacturer’s software, such as printhead cleaning for inkjets or a cleaning page for some lasers. These run through steps the manufacturer designed for your exact model. For inkjet heads specifically, see our printhead cleaning guide.

Check whether marks come from the scanner or the printer

Print a document directly from your computer and compare it with a copy. If only the copy is marked, clean the scanner. If both are marked, the issue is in the print engine; our guides to streaks and lines and smudged prints cover that.

Model and operating-system considerations

If you useWhat to know
Inkjet printersAvoid touching the printhead nozzles and the encoder strip. Let the printer park its carriage before unplugging.
Laser printersLet the fuser cool before reaching inside. Keep toner dust contained and protect drum units from light and fingerprints.
All-in-one modelsClean both the flatbed glass and the document feeder glass strip, since each can cause different scan defects.

Frequently asked questions

Can I use rubbing alcohol to clean my printer?

Only if your printer’s manual specifically says so. Alcohol can dry out rubber rollers and damage some plastics and coatings. Plain water on a lint-free cloth is the safest default.

Is it okay to use compressed air inside a printer?

It is best avoided in laser printers because it scatters toner into the air and deeper into the machine. In inkjets it can push dust into sensitive areas. A dry cloth on reachable surfaces is the safer approach.

Why do my copies have a line but my printouts do not?

That pattern usually points to a speck on the scanner glass, especially the narrow strip used by the automatic document feeder. Cleaning that strip often clears it.