This past year brought good news to sheetfed ink manufacturers, as the market showed some signs of Heidelberg Speedmaster CD74. improvement for the first time in a few years.      The U.S. sheetfed market has had its best year since 2000, said Mark Levin, president, Sun Chemical North American Commercial Group. Recent reports from print industry groups are somewhat conflicting, but generally show that revenues grew about 5 to 6 percent for the first nine months, with sig...