The University of Iowa has a nice animation of how a wooden printing press from the fifteenth century worked.
The same site has a wealth of other resources about early printing, but I think this animation might be the only one accessible to English Language Learners.
I’ve placed the link on my website under Later Middle Ages.
June 2, 2009 at 1:53 pm
thanks for the heads up. that’s a fitting tribute. the wonders of early paper printing as depicted by animation.