Faced with continued increases in raw materials and operating costs, Sun Chemical will increase prices by 12 percent for publication inks effective July 1, 2008.   “Crude oil prices have made an unprecedented rise over the last six months, increasing by over 45 percent from what were already record levels in early December 2007,” said Greg Lawson, vice president sales, Sun Chemical North America. “We are seeing the effect of these increases in the many oils, resins, and other hydrocarbon rela...