pro910 User’s Guide> 33
the printer. (The duplex unit must be installed for this
function.)
• Envelopes should be loaded face-up with long edge into
the printer. Do not select duplex printing on envelopes.
• Do not leave space between the paper and the guides.
• Do not exceed the paper capacity of approximately 230
sheets, 100 transparencies or 25 envelopes. Maximum
stacking depth is 1 in.