Patent ID: 7735829

Claim:
A method for turning a sheet during its transport through a printing press, the method comprising the following steps: moving the sheet on a circular path on a first transfer drum while being held in a first transport device in the form of mechanical grippers at a leading sheet edge and being held in suction grippers at a trailing sheet edge; transferring the trailing edge of the sheet to a second transport device in the form of a gripper system of an adjacent second transfer drum revolving synchronously; during the transfer, shutting off vacuum on the suction grippers, holding the sheet by the mechanical grippers in a predefined first rotational angle range after the transfer, and releasing the sheet from the mechanical grippers after leaving the rotational angle range; and tautening and braking the sheet in a predefined second rotational angle range, after being released from the mechanical grippers, by setting the vacuum of the suction grippers to attract the sheet by suction.