HP C8180 Windows Help - Page 170

Printouts are faded or have dull colors Cause: The copy or print paper type setting is incorrect. Solution: Load high-quality paper in the input tray and print the image with a high print quality setting, such as Best, Maximum dpi, or High Resolution. Always make sure the paper you are printing on is flat. For best results when printing images, use HP Premium Plus Photo Paper. If the problem persists, use the software you installed with the HP All-in-One or another software application to rotate your image 180 degrees so that the light blue, gray, or brown hues in your image do not print at the bottom of the page. For more information, see: "Information on paper" on page 147 Cause: The paper type is not suitable for the HP All-in-One. Solution: Use HP Premium Papers or any other paper type that is appropriate for the HP All-in-One. Cause: The Lighter / Darker copy setting for the HP All-in-One is set too light. Solution: Adjust the lightness and darkness of the copies. For more information, see: "Adjust the lightness and darkness of your copy" on page 125 Cause: The Paper Type setting is incorrect. Solution: Change the Paper Type setting to match the type of paper loaded in the input tray. For more information, see: • "Set the copy paper type" on page 123 • "Set the paper type for printing" on page 77 Cause: Copying a poor-quality picture, such as a newspaper photo, causes bands, checks, or stripes to appear on your copy. These are called moiré patterns. Solution: To reduce moiré patterns, try placing one or more clear plastic sheet protectors directly on the glass, and then place the original print side down on top of the sheet protectors. Cause: Debris might be stuck on the glass or on the back of the document lid; this causes poor copy quality and slows down processing. Solution: Clean the glass and the back of the document lid. For more information, see: • "Clean the glass" on page 133 • "Clean the lid backing" on page 134 Print quality troubleshooting 169 Troubleshooting