Heidelberger Druckmaschinen Ag

Fujifilm Corporation

Bernd Sitzmann

Jun Yamanobe

Peter Hachmann

Thomas Schmidt

Yasuhito Oshima

Burkhard Maass

Alexander Knabe

Gerd Merkel

Andreas Müller

Werner K&ouml;nig

Rolf K&uuml;ndgen

Rainer Hofmann

Patrick Roth

Markus Uihlein

Rolf Kündgen

Stephan Balleis

Rolf Kuendgen

Matthias Zapf

Michael Postels

Diana B&ouml;ser

Johann Weigert

Michael ÖStreicher

Bertram Lütke

A printed product is produced by applying at least one colored and water-containing ink to image regions on a printing material in a drop-on-demand process, applying a substantially colorless and water-containing liquid a) to non-image regions and/or b) to image regions that have little ink in a drop-on-demand process and drying the printing material. In this case, the printing material has a coating with at least one acid. After applying ink and applying the liquid, a water-containing further liquid is applied both to image regions and to non-image regions of the printing material. The first-mentioned liquid and/or the further liquid contains at least one substance for at least partly neutralizing the acid. The undesired formation of crease waves or curls and glossiness fluctuations between varnished image areas and varnished non-image areas is thus advantageously avoided.

Method of producing printed products

A method for configuring the further processing of printing substrates in a digital printing machine includes modifying settings for configuring the further processing while the machine is in operation. The settings of the further processing are created by using a configuration program running on a control unit of the digital printing machine. The modified settings have an effect on at least one region to be further processed on the printing substrate and the settings are printed onto the printing substrate so as to be allocated to a corresponding region to be further processed.

Method for configuring a varnishing unit in a digital printing machine

A method for operating a cleaning apparatus, having a trough and a brush disposed in the trough, in a printing press, includes first, second and third steps. In the first step, a cylinder of the printing press is cleaned by the cleaning apparatus, with the brush bearing against the cylinder. In the second step, the brush is moved away from the cylinder, and a level of a liquid in the trough is changed, resulting in the liquid being brought into contact with the brush. In the third step, the brush is cleaned by the liquid in the trough. A printing press for carrying out the method is also provided.

Method for operating a cleaning apparatus of a printing press and printing press for carrying out the method

An apparatus for driving a roller of a printing press includes a main motor configured to drive the roller through a first gear wheel and a first freewheel, and an auxiliary motor configured to drive the roller through a second gear wheel and a second freewheel. A brake that is different from the main motor, for example a band brake, is configured to brake the roller during overrunning of the roller following a machine stop signal. A printing press having the apparatus is also provided.

Apparatus for driving a roller of a printing press and printing press having the apparatus

A method for operating a printing press having a printing unit and a cleaning apparatus includes, in a first step, starting up the printing unit in order to print therewith, and in a subsequent, second step, displacing the cleaning apparatus into the printing unit running in printing operation and/or out of the printing unit running in printing operation. A printing press for implementing the method is also provided.

Method for operating a printing press and printing press implementing the method

A printing press includes a form cylinder, a blanket cylinder, an impression cylinder, an adjusting apparatus having at least one first actuating drive for setting a printing pressure between the blanket cylinder and the impression cylinder, and a tracking system for setting a printing pressure between the form cylinder and the blanket cylinder in dependence on the setting of the printing pressure between the blanket cylinder and the impression cylinder. The tracking system has at least one second actuating drive coupled to the at least one first actuating drive in terms of control technology through an electronic control device, in such a way that the form cylinder is adjusted automatically.

Printing press

A printing press has a printing unit with a cylinder and a cleaning device that is mounted for selective displacement into an operating position for cleaning the cylinder and into a maintenance position away from the cylinder. The operating position is located within the printing unit and the maintenance position, although being located outside the printing unit, is located on the press. While the press runs in printing operation, the cleaning device is kept away from the operating position.

Method of operating a press

A cladding of a printing machine in a region of a side wall of a printing unit of the printing machine includes a housing fastened to the side wall, the housing having an upper housing wall, two lateral housing walls and a housing cover connected to the lateral housing walls so as to be displaceable between a lower position covering the side wall and a position raised to a defined height.

Cladding for a printing machine

A printing machine provided with a rectilinear guide and a cleaning device having a handle for moving the cleaning device along the rectilinear guide includes at least one joint by which the handle is attached to the cleaning device in a manner that the handle is movable relative to the cleaning device.

Printing machine provided with a cleaning device

A method of winding a web band in a machine for processing printing materials, including controlling the winding as a function of a diameter of a roll formed by the web band, as the diameter changes during the winding, includes determining, by a first sensor fastened to a frame of the machine, the position of a peripheral surface of the roll relative to the frame of the machine, and determining, by a second sensor fastened to the frame of the machine, the position of one of a center of the roll and of a peripheral surface of a spindle carrying the roll, relative to the frame of the machine; a winding device for performing the method; and a printing-material processing machine, such as a printing press, having the winding device.

Winding method and device for machines for processing printing materials

A device for clamping the trailing edge of a printing plate in a plate cylinder of a rotary printing machine includes a torsion bar disposed in a cylinder gap formed in the plate cylinder and extending in axial direction thereof, clamping elements affixed to the torsion bar and cooperating with holding elements for clamping the printing plate, and actuators provided on both sides of the plate cylinder for stretching the printing plate in axial direction. The torsion bar is of bipartite construction, and the actuators, respectively, are mounted so as to be displaceable axially independently of one another.

Device for clamping the trailing edge of a printing plate in a plate cylinder of a rotary printing machine

A clamping device for locking-up printing forms on a printing-form cylinder of a printing machine, having a plurality of clamping elements disposed so as to be adjustable in axial direction, with an adjusting device for respectively expanding and buckling a clamped printing-form edge, comprising a shaft whereon the clamping elements, with spring elements interposed, are axially displaceably mounted, and adjusting elements disposed on respective outer ends of the shaft for subjecting the clamping elements to forces acting in the axial direction.

Clamping device for locking-up or mounting printing forms

A method for removing a cleaning device from a printing machine and for inserting the cleaning device or another cleaning device into the printing machine, the inserted cleaning device being secured in position in the printing machine by a fixing device, includes opening a protective covering of the printing machine and automatically inactivating the fixing device by the opening of the protective covering, removing the cleaning device from the printing machine through an opening in the printing machine exposed by the protective covering, inserting the respective cleaning device into the printing machine, and closing the protective covering and automatically activating the cleaning device by the closing of the protective covering, so that the inserted cleaning device is secured in the inserted position thereof; and a printing machine for performing the method.

Method for removing and inserting a cleaning device, respectively, into and out of a printing machine, and a printing machine for performing the method

A cleaning device for a printing press, having a cloth spindle formed with a longitudinal groove, and a cleaning cloth clampable in the longitudinal groove, comprising a clamping body rotatable inside the longitudinal groove out of a first position, wherein clamping of the cleaning cloth is undone, and into a second position, wherein the cleaning cloth is clamped between the clamping body and an inner face defining the longitudinal groove; and a printing press and, more particularly, a rotary printing press, in combination with the cleaning device.

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Sandhausen, Germany

Bernd Sitzmann