Capacity Tray 1/2
Up to 20 sheets, depending on their thickness.
Tray 3
Not supported
Orientation Tray 1
Face down
Tray 2
Face up
Driver Media
Type
Thick 1 (91–150 g/m)
Thick 2 (151–210 g/m)
Weight
91–210 g/m
Duplexing
See “Specifications” on page 58 for supported sizes
Envelope
Print on the front (address) side only. Some parts of the envelope consist of three layers of paper—the
front, back, and flap. Anything printed in these layered regions may be lost or faded.
You can print continuously with envelope. However, this could affect the media feed, depending on
the media quality and printing environment. If problems occur, stop the continuous printing and
print one sheet at a time.
Capacity Tray 1
Up to 10 sheets, depending on their thickness
Tray 2/3
Not supported
Orientation
Face down
Driver Media
Type
Envelope
Duplexing
Not supported
Use envelopes that are
❏ Common office envelopes approved for laser printing with diagonal joints, sharp folds and edges,
and ordinary gummed flaps
Note:
Because the envelopes pass through heated rollers, the gummed area on the flaps may seal. Using
envelopes with emulsion-based glue avoids this problem.
❏ Approved for laser printing
❏ Dry
AcuLaser C3900 Series User’s Guide
Media Handling 62
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