At this point pretty much everyone has encountered a paper jam in a photocopier or printer. They can happen for a variety of reasons. One of them is the buildup over time of the dust from the paper (and toner if you’re using a laser printer). If you’ve ever had to support printers you’ve gone the can of compressed air/soft brush route to get the dust out of there and clear the paper path. akihabaranews.com has a post about a pretty cool solution to this issue – sticky paper. The idea is to run this sticky paper through the printer routinely to help clear out the dust – as the paper runs through, the dust adheres to it. Clever. It doesn’t seem like a 100% solution since the dust ends up in all kinds of nooks and crannies that the paper never physically touches, but if you used this regularly I can’t see but that it would help.