Konica Minolta MAGICOLOR 2300 - Manual (Page 22)

Media Types 14
Do not use thick stock that is
Mixed with any other media in the media trays (as this will cause media
jams)
Envelopes
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.
Use envelopes that are
Common office envelopes approved for laser printing with diagonal joints,
sharp folds and edges, and ordinary gummed flaps
Because the envelopes pass through heated rollers, the gummed
area on the flaps may seal. Using envelopes with emulsion-based
glue avoids this problem.
Dry
Printed on the front address side only
Do not use envelopes that have
Self-sticking flaps
Tape seals, metal clasps, paper clips, fasteners, or peel-off strips for
sealing
Transparent windows
Too rough of a surface
Material that will melt, vaporize, offset discolor, or emit dangerous fumes
Been presealed
Capacity Tray 1 Up to 10 envelopes, depending on their thickness
Orientation Face up
Type Check http://printer.konicaminolta.net/support (click on
"Answer Base") for currently approved media.
Driver
Media Type Envelope
Weight 25–43 lb bond (91–163 g/m²)
Duplexing Not supported