This section describes how to specify envelope size for the bypass tray using the control panel.
Press the [Menu] key.
Press the [ ] or [ ] key to select [Paper Input], and then press the [OK] key.
Press the [ ] or [ ] key to select [Paper Size:Bypass Tray], and then press the [OK] key.
Select the envelope type using the scroll keys, and then press the [OK] key.
Press the [Menu] key.
The display returns to the initial screen.
Confirm that the top of the stack is not higher than the limit mark on the side guides.
Do not push the stack of envelopes with too much force.
Confirm that the edges of envelopes fit under the side guides.
For details about paper types supported by the printer, see "Supported Paper Types".