Canon PIXMA iP2850 - Manual (Page 45)

Paper Weight
You can use paper in the following weight range.
• 17 to 28 lb (64 to 105 g /m 2 ) (except for Canon genuine paper)
Do not use heavier or lighter paper (except for Canon genuine paper), as it could jam in the printer.
Notes on Storing Paper
• Take out only the necessary number of paper from the package, just before printing.
• To avoid curling, when you do not print, put unused paper back into the package and keep it on a
level surface. And also, store it avoiding heat, humidity, and direct sunlight.
45