Printing machine sheet guide for first or double printing uses swivel rack with guide bars adapted to reversing drum to reverse sheet assisted by blower boxes.

摘要

A swivel rack (9) addressed to the reversing drum (3) is adapted to the sheet (16) for the first print and a second blower box (14) below the tangent point (T3,4) blows air towards the drum for double printing. A first blower box (15) reaches up to the storage drum (2) and blows air towards this for both printing runs. The rack is arranged in a four-point drive system (6,7,10,11,12), is mounted on the output drive lever (7) and is composed of interconnected guiding bars on the lever (7) and adapted to the periphery of the reversing drum (3). Both blower boxes are fixed to the machine frame for preference.