How do I load envelopes in the printer?

Pull out the paper tray and slide the paper guides to the sides, then slide the guide to match the envelope size. Load envelopes face down against the guide, making sure they do not extend past the end of the tray. The tray can hold up to 10 envelopes. If you have difficulty loading a stack, flatten each envelope individually or load one at a time. (Page 38-42)