Printing machine has positioning device with spring for moving intermediate roller from second to first position, positioning drive for moving intermediate roller from first to second position

摘要

The printing machine has first (101) and second (102) rotation bodies, an intermediate roller (104) and a positioning device (105) with a spring (106) for moving the intermediate roller to a first position in contact with the first and second rotary bodies and a second position separated from both. The spring is arranged for moving the intermediate roller from the second to the first position and the positioning device has a positioning drive (7) for moving the intermediate roller from the first to the second position.