Dell 3010cn Color Laser Printer - Manual (Page 29)

To load envelopes that are under 8.66 inches (220 mm) in width, insert the envelopes with the flaps open and toward the front of the printer, with the
recommended print side face up.
To load envelopes that are over 8.66 inches (220 mm) in width, insert the envelopes with the flaps closed and the short-edge of the envelopes facing into the
printer, with the recommended print side face up.
You can load envelopes up to the maximum fill line in the tray at one time.
Using the Multipurpose Feeder
l Load only one size and type of print media during a single print job.
l To achieve the best possible print quality, use only high-quality print media that is designed for use in laser printers. For more guidelines on print media,
see "
Print Media Guidelines ."
l Do not add or remove print media when there is still print media in the multipurpose feeder or when the printer is printing from the multipurpose feeder.
This may result in a paper jam.
l Print media should be loaded with the recommended print side up and the top of the print media going into the multipurpose feeder first.
l Do not place objects on the multipurpose feeder. Also, avoid pressing down or applying excessive force on it.
l Do not remove any tray while a job is printing from the multipurpose feeder or Printing is displayed on the operator panel. This may result in a paper
jam.
The icons on the multipurpose feeder identify how to load the multipurpose feeder with paper, and how to turn an envelope for printing.
Loading Print Media in Optional Trays
All trays are loaded the same way.
1. Remove the tray.
NOTE: Make sure set the envelope flaps are completely unfolded.
NOTICE: Never use envelopes with windows, coated linings, or self-stick adhesives. These lead to paper jams and damage to the printer.
NOTICE: If you insert the long-edge of the envelopes facing into the printer (using DL or Monarch), specify Portrait & Landscape (For envelopes) in Turn
Image by 180deg in the Booklet/Poster/Mixed Document dialog box of your printer driver.
NOTE: To avoid paper jams, do not remove trays while a job prints.