Patent ID: 8156865
Filing Date: 2012-04-17
Classification: B41F

Abstract:
1. A method for operating a printing machine in a print operating mode and in another operating mode, the method comprising the following steps: providing an inking unit with a vibrating roller and first and second rollers; providing first and second motors; providing a clutch between the first motor and the second roller; in the print operating mode, bringing the vibrating roller periodically into contact with the first roller; rotationally driving the first roller with the first motor; rotationally driving the second roller with the second motor, and transmitting no torque from the first motor to the second roller through the clutch; activating the first motor with a control device for rotating the first roller at a rotational speed being in a constant ratio to a rotational speed of the second roller; and in the other operating mode, rotationally driving the first roller and the second roller with the first motor, and transmitting a torque from the first motor to the second roller through the clutch.