Canon BJ-10sx - Manual (Page 26)

Envelopes, transparencies, and thick paper are loaded from the bottom
of the printer with the printer resting on the printer stand.
To load multiple sheets of paper, you must install the optional sheet
feeder. See Chapter 9, Installing and Using Options, for details.
Selecting Paper
Your printer produces letter-quality output on most plain bond
papers, including cotton bond papers and photocopying papers.
This printer does not require special ink-jet papers.
Use cut-sheet paper only. Do not use multiple-part forms.
The printer prints better on some paper than others, and the
quality of paper varies across the United States. Before
purchasing a large amount of paper, buy a small amount and test
it to see if it meets your printing requirements.
NOTE: Attempting to print on damp, curled, wrinkled, or torn
paper can cause paper jams and poor print quality.