Folding device with a first and second partial cylinder and method for operating such a folding device

A folding device comprising:

• a first partial cylinder having first radial segments and a first partial cylinder circumference
• a second partial cylinder having second radial segments and a second partial cylinder circumference, said first and second partial cylinders constituting a body of a cylinder;
• means supporting said first and second partial cylinders coaxially and rotatably relative to each other;
• a first group of function elements on said first partial cylinder circumference;
• a second group of function elements on said second partial cylinder circumference;
• a separate electric motor for each said first and second partial cylinders, each said separate electric motor being, in its gear layout, independent of other cylinders and adapted to coaxially rotatably drive its associated partial cylinder;
• and
• a driver circuit adapted to drive said electric motors at identical speeds and with an adjustable relative phase portion.