This is a persistent myth that has long been busted. Back in 1998, three office equipment manufacturers and the U.S. Government Printing Office tested over two million sheets of recycled content office paper on various types and models of copiers, laser printers and ink jet printers. The results: multi-purpose paper containing 30% postconsumer recycled content worked just as well as virgin paper. 

 

If paper jams in your copier, most likely the ream had sat opened for a long time and absorbed moisture. It is also possible that the paper was not formulated for copiers. Use paper qualified as "high-speed" for high-speed copiers. The machine may also need cleaning or adjusting. Or simply try another brand of recycled paper, just as you'd try another brand of virgin paper. See Conservatree’s website for more information about environmental papers and a quick guide to paper sources.