Patent ID: 8365661
Filing Date: 2013-02-05
Classification: B41F

Abstract:
1. A printing press for printing on both sides of sheets, comprising: at least four printing units having in each case a transfer cylinder for guiding printing ink, one form cylinder and only one sheet-guiding impression cylinder, said impression cylinders of said printing units being adjacent to one another, said form cylinders having axes disposed above a plane in which axes of said impression cylinders lie; each of said impression cylinders having respective grippers for conveying the sheets individually one after another directly from one said impression cylinder to an adjacent said impression cylinder forth and back along an outward path and a return path which cross one another multiple times between said adjacent impression cylinders, said impression cylinders each having a respective first circumferential face carrying the sheets and interacting with said transfer cylinder in a first semicylindrical sector, and a respective second circumferential face carrying the sheets in a second semicylindrical sector.