Related references
Paper Loading Capacity
Loading Envelopes
You can print on plain paper envelopes in this size: No. 10 (4.1 × 9.5 inches [105 × 241 mm]).
1. Pull up the paper support and its extension.
2. Pull out the output tray and open the paper stopper.
3. Slide the edge guide left.
4. Load up to 5 envelopes against the right side. Load them printable side up and flap edge left.
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