When printing on envelopes, please note the following:
You can load up to 10 envelopes at a time in the sheet feeder.
Note:
The folding quality and thickness of envelopes vary widely. If the total thickness of the stack of envelopes exceeds 10 mm, press each envelope in the stack flat before loading. If print quality declines when a stack of envelopes is loaded, load one envelope at a time.
Set the adjust lever to the "+" position.
Note:
Return the adjust lever to the "0" position, which is the normal position, after you finish printing the envelopes. Leaving the lever in the "+" position may cause gaps to appear in images printed on other media.
When the adjust lever is in the "+" position, make sure the High Speed setting in the printer driver's Advanced dialog box is off. To turn this option off, you may also need to change the Print Quality setting.
Load envelopes flap edge first with the flap side down, as shown in the illustration.
Do not use envelopes that are curled or folded.
Flatten envelopes before loading.
Avoid using envelopes that are too thin as they may curl during printing.
Select Plain Paper as the Media Type setting in the printer software.