The thickness of envelopes and their ability to fold vary widely. If the total thickness of the stack of envelopes exceeds 10 mm, press down on the envelopes to flatten them before loading. If print quality declines when a stack of envelopes is loaded, load one envelope at a time.

You can print up to 10 envelopes at a time, but always load one extra envelope to help the final envelope feed correctly into the printer. For example, when printing 10 envelopes, load 11 envelopes.

Do not use envelopes that are curled or folded.

Flatten the envelope flaps before loading.

Flatten the leading edge of the envelope before loading.

Avoid using envelopes that are too thin, as they may curl during printing.