You can print on plain paper envelopes in 4 1/8 × 9 1/2 inch (#10) (105 × 241 mm) size.
Note:
The envelopes may slide forward slightly as you insert the cassette. This is normal.
Keep the cassette flat as you insert it.
Do not remove or insert the cassette while printing or copying.
Note:
Do not use envelopes that are curled or folded, and avoid using envelopes that are too thin because they may curl during printing. Before printing from your computer, select
Envelope as the paper type,
Envelope #10 as the paper size, and
Landscape as the orientation.