For any company, enjoying exceptional growth over an extended period of time is a sign of overall excellence. When a relatively young privately-held company achieves this kind of growth, it clearly shows that the company is very much on the right track.      In August, Inc. magazine published its Inc. 5,000, profiling the 5,000 fastest growing private companies in America. The ink industry had one honoree: Joules Angstrom U.V. Printing Inks, the UV ink specialist based in Pataskala, OH. Joules A...