On some prints the overlap of the 1/2" width print bands are quite evident (such as grayscale artwork). You will find that laminating your prints will almost always make the banding somehow disappear not to mention that it also results in a very durable final product.
Contrary to popular opinion I find my PC-600 Colorcamm to be a very effective & profitable piece of equipement, it has been in use for over 10 years without any issues or service whatsoever.