Brother Error Two-Sided (Duplex) Printing Jam — What It Means & How to Fix It

Fix Brother printer two-sided printing paper jam error when paper gets stuck in the duplex unit during automatic double-sided printing. This guide covers everything you need to know about this topic, including common causes, step-by-step solutions, and answers to frequently asked questions.

Here are the key things to understand: Duplex paper jams occur when paper fails to properly re-enter the printer for the second side. The duplex unit flips the paper 180 degrees and feeds it back through the print path. Brother laser printers with automatic duplex use a separate tray or mechanism on the back of the printer. Wrinkled, curled, or thick paper is more prone to duplex jams than standard weight paper. Understanding these fundamentals will help you diagnose and resolve this issue more effectively.

The most common reasons this occurs include: Paper curling from heat during the first pass through the fuser unit. Using paper heavier than the duplex unit's maximum weight (typically 105 gsm / 28 lb). Duplex tray feed rollers dirty or worn, failing to grip the paper on re-entry. Paper size setting does not match the actual paper loaded in the tray. Identifying the root cause is the first step toward finding the right solution.

To resolve this, follow these recommended steps: Remove the duplex tray (rear panel) and carefully pull out any jammed paper in the direction of printing. Check inside the printer for any torn paper scraps in the paper path. Clean the duplex tray rollers with a damp, lint-free cloth to restore grip. Use standard weight paper (75-90 gsm) for duplex printing and ensure the paper size setting matches. If these steps do not resolve the issue, consider consulting additional resources or a qualified professional.

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