Heidelberger Druckmaschinen Ag

J&uuml;rgen Rautert

Frank Schumann

Thomas Wolf

Burkhard Maass

Albert Maul

Markus Gerstenberger

A device for transporting a sheet for a sheet-processing machine in a processing direction includes first grippers for gripping the sheet at a leading gripper edge, as viewed in the direction of processing, the first grippers revolving in a first direction during operation. Also provided is a cylinder bearing the first grippers, and having a support surface formed at the circumference thereof for supporting the sheet gripped by the first grippers. Further provided are second grippers for taking over the leading gripper edge of the respective sheet from the first grippers, the second grippers revolving in a second direction opposite to the first direction; and at least one pair of sheet supports rotating about a rotational axis and formed with a pitch surface disposed concentric with the rotational axis, the pitch surface having an extent along the rotational axis less than the width of a respective nonprinted lateral margin of the respective sheet, and serving to press the sheet against the support surface within a respective lateral margin in regions of common normals of the support surface and the pitch surfaces. Additionally provided are suction grippers revolvable in the second direction and for taking over from the cylinder a trailing gripper margin of the sheet which has been placed on the support surface of the cylinder by the sheet supports.

Device for transporting a sheet for a rotary printing machine

A method for preventing limit values from being exceeded in sheet-fed printing machines includes acquiring values relevant to the printing process with respect to individual sheets, and processing those values so that predetermined limit values are maintained, detecting the development trend of a relevant value in the course of a series of sheets, and initiating measures when a change in the values occurs that would lead to a limit value being exceeded in an additional predetermined number of sheets if a continuation of the trend occurs; and a device for performing the method.

Method and device for preventing limit values from being exceeded in sheet-fed printing machines

A device for detecting the position of a printing plate on a plate cylinder of a printing machine includes path measuring systems corresponding with one edge of the printing plate.

Growing community of inventors

Heidelberg, Germany

Jürgen Rautert

Growing community of inventors

Heidelberg, Germany

J&uuml;rgen Rautert

Jürgen Rautert