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Fix Copy Quality Issues – Printer Troubleshooting Guide | TroubleshootMyPrinter




How to Fix: Copy Quality Issues

Copies produced on a multifunction printer have poor quality, including blurriness, dark or light output, spots, or lines. Copy quality issues combine both scanner and printer problems, as the copy process involves scanning the original and then printing the scanned image. This guide walks you through the most common causes and step-by-step solutions to fix copy quality issues on any printer, regardless of brand or model.

Common Causes

This problem is most often caused by one or more of the following:

  • Dirty scanner glass causing marks or blurriness on copies
  • Incorrect copy density or contrast settings on the printer
  • Original document is of poor quality (faded, wrinkled, or colored background)
  • Toner or ink quality issues affecting the print portion of the copy
  • ADF (Automatic Document Feeder) misfeeding originals, causing skewed copies

Step-by-Step Solution

Follow these steps to diagnose and fix the issue. Test your printer after each step.

  1. Step 1: Clean the scanner flatbed glass and ADF glass strip with glass cleaner and a lint-free cloth
  2. Step 2: Adjust the copy density/darkness setting on the printer’s control panel
  3. Step 3: Place the original flat against the glass and close the lid firmly to prevent light leakage
  4. Step 4: Try copying from the flatbed instead of the ADF to determine if the ADF is causing quality issues
  5. Step 5: Check and replace low ink or toner cartridges
  6. Step 6: Adjust the copy resolution to a higher setting for better quality
  7. Step 7: Run the printer’s print quality maintenance routines (cleaning, alignment)

Brand-Specific Troubleshooting

Some printer brands require slightly different troubleshooting approaches. See the brand-specific guidance below.

Hp Printers

HP MFP models have a ‘Copy Quality’ setting accessible from the Copy menu. Increase the ‘Optimize’ setting for text, mixed, or photo originals. HP’s ‘Enhance’ feature can improve copies of faded originals.

For more Hp-specific troubleshooting, visit our Hp Printer Troubleshooting hub.

Canon Printers

Canon MFP models offer copy quality presets including Text, Photo, and Text/Photo. The ‘Sharpness’ and ‘Density’ adjustments in the copy menu help fine-tune quality. For the imageCLASS series, the ‘Original Type’ setting significantly affects copy quality.

For more Canon-specific troubleshooting, visit our Canon Printer Troubleshooting hub.

Ricoh Printers

Ricoh MFP models have extensive copy quality settings including original type, density, and background suppression. Use ‘Background Removal’ for copying documents with colored backgrounds. The Auto Density function helps with inconsistent originals.

For more Ricoh-specific troubleshooting, visit our Ricoh Printer Troubleshooting hub.

Xerox Printers

Xerox WorkCentre and VersaLink MFPs offer ‘Image Quality’ adjustments in the copy menu. The ‘Background Suppression’ feature removes colored backgrounds. ‘Edge Erase’ can clean up black borders from copying books or smaller documents.

For more Xerox-specific troubleshooting, visit our Xerox Printer Troubleshooting hub.

Related Problems

Users experiencing copy quality issues often encounter these related issues:

Frequently Asked Questions

Why are my copies coming out too dark or too light?

Adjust the copy density setting on your printer’s control panel. Most printers have a density slider that can be moved toward lighter or darker. Also check the ‘Original Type’ setting — selecting ‘Photo’ for a text document or ‘Text’ for a photo can produce incorrect density. If copies are consistently too light, check toner or ink levels.

Why do my copies have black lines running through them?

Black lines on copies almost always indicate dirt, dust, or dried correction fluid on the scanner glass, specifically on the narrow ADF glass strip. Clean both the flatbed glass and the ADF scanner glass strip thoroughly. If the lines appear only when using the ADF (not the flatbed), the ADF glass is the culprit.

How can I improve the quality of copies from old or faded documents?

Increase the copy density to darken the output. Select ‘Text’ mode for the original type to enhance contrast. Some printers have a ‘Background Removal’ feature that can improve readability by removing yellowed or discolored backgrounds. For very faded documents, scan at high resolution first, enhance in an image editor, then print the enhanced version.

Need brand-specific help?

This guide covers the general fix. For model-specific instructions, find your printer brand below and navigate to your exact model for tailored troubleshooting steps.