Canon PIXMA Pro9000 Series Quick Start Manual page 11

Basic Printing
temperature / low humidity). If this happens, reduce the number of
sheets of paper by about half (approximately 5 mm / 0.2 inches).
When printing on art paper that is not produced by Canon that is up to
200 gsm / 53 lb, load one sheet at a time.
When printing on plain paper, do not stack more than 50 sheets in the
Front Tray.
Do not touch the printed surfaces until the ink dries. For specific drying
times, refer to the instructions packaged with your media.
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