Possibly if the rollers are dirty in places then they could drag the paper in by one corner only and the paper would swivel slightly.
Maybe the following site could help if you search the forum?? or even the Canon help site?
http://www.fixyourown...ms&q=canon+pixma+2200
Incidentally, if the printer is a bit old then the internal ink pad, which soaks up the ink after the cleaning process, could soon be full.
The pad in my old Canon (10 years ago) was a piece of 1/2" thick felt which had to be removed, washed, dried and then returned. Very messy!!!
If the printer is stood on it's side the ink will flood out. Don't try it. Much messier!!!!!!!!!