A sheet-processing machine includes a revolving sheet holding device for aiding in transporting sheets to be processed. A device for producing suction air or air blast has a movable air delivery element accommodated on the revolving sheet holding device. An actuating element cooperatively engages with the air delivery element for driving the air delivery element. The actuating element is either fixed to a frame of the machine or is movable relative to the sheet holding device.

 
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< Device for detecting edges of sheet-shaped materials

< Device for feeding or removing a printing plate including a pivotal plate storage device having a linearly movable plate support

> Device for conveying sheets through a printing machine

> Gripper system for a machine which processes printing material sheets
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