Canon BJC 7000 - Manual (Page 27)

Paper Guidelines
When selecting or loading paper, please remember the following:
o Attempting to print on damp, curled, wrinkled, or torn paper can cause
paper jams and poor print quality.
o Use cut-sheet paper only. You cannot use multipart paper.
o When using graph paper, the lines may not match because the 1/6-inch
line spacing of the printer is slightly less than that of graph paper.
o If the print density of your page is very high, light paper stock may curl
slightly due to the large amount of ink..If you need to print dense graphics,
try printing on heavier stock.
o Do not use thicker paper that meets the specifications for this printer.
Printing with a paper that is thick enough to come in contact with the print
head nozzles may damage the BJ cartridge.