Not really, but it depends how much you scale up (past 100%) when printing. If you have an iPad it is bigger and better resolution so it clearer, but the iPhone/iPod touch is a smaller size.
Some people just keep it at 100% (or even a little less) size but still print on to A4 (so there is quite a lot of white around it when centered) but at least it is not as blurry.
There was another thread related to printing:
http://forums.irealbook.net/showthread.php?t=459
Depends on how much blur they can tolerate.
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