HP 3500 - Manual (Page 81)

4. Place print media into the tray with the side to be printed up, and the top, short edge in
first.
Note If you are printing on two sides, see 2-sided (duplex) printing for loading instructions.
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5. Slide the paper width guides inward until they lightly touch the print media stack on both
sides without bending it. Make sure the print media fits under the tabs on the width
guides.
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CAUTION Wait for the printer to finish printing before closing Tray 1 (optional). Closing the tray before
the printer finishes can cause jams.
6. If you are printing on special media, such as labels, envelopes, or heavy or light paper,
open the lower rear door (rear output bin) at the back of the printer. Extend the paper
extension tray.
ENWW Configuring trays 69