HP LaserJet Pro MFP M428fdn

10 Output curl

Description

Printed paper has curled edges. The curled edge can be along the short or long side of the paper. Two types of curl are possible:

• Positive curl: The paper curls toward the printed side. The defect occurs in dry environments or when printing high coverage pages.
• Negative curl: The paper curls away from the printed side. The defect occurs in high-humidity environments or when printing low coverage pages.

Possible solutions

1. Reprint the document.
2. Positive curl: From the printer EWS, select a heavier paper type. The heavier paper type creates a higher temperature for printing.
   Negative curl: From the printer EWS, select a lighter paper type. The lighter paper type creates a lower temperature for printing. Try storing the paper in a dry environment prior or use freshly opened paper.
3. Print in duplex mode.

11 Output stacking

Description

The paper does not stack well in the output tray. The stack might be uneven, skewed, or the pages might be pushed out of the tray and onto the floor. Any of the following conditions can cause this defect:

• Extreme paper curl
• The paper in the tray is wrinkled or deformed
• The paper is a non-standard paper type, such as envelopes
• The output tray is too full

Possible solutions

1. Reprint the document.
2. Extend the output bin extension.
3. If the defect is caused by extreme paper curl, complete the troubleshooting steps for Output curl.
4. Use a different paper type.
5. Use freshly opened paper.
6. Remove the paper from the output tray before the tray gets too full.