Abstract: A press assembly has a plurality of processing stations for the processing of sheets. These processing stations are arranged in succession in a transport direction of the sheets for inline processing of the sheets. At least one of these processing stations is a non-impact printing unit and at least one processing station downstream of the non-impact printing unit is embodied as a dryer. At least one additional processing station is embodied as a coating unit. The coating unit is configured for applying a coating in a form of a varnish to each sheet. A plurality of individually controlled, non-impact printing units are arranged along the transport path of the sheets. Each of the plurality of non-impact printing units is configured as an ink jet printer.

Abstract: A press assembly has a plurality of processing stations for the processing of sheets. These processing stations are arranged in succession in a transport direction of the sheets for inline processing of the sheets. At least one of these processing stations is a non-impact printing unit and at least one processing station downstream of the non-impact printing unit is embodied as a dryer. At least one additional processing station is embodied as a coating unit. The coating unit is configured for applying a coating in a form of a varnish to each sheet. A plurality of individually controlled, non-impact printing units are arranged along the transport path of the sheets. Each of the plurality of non-impact printing units is configured as an ink jet printer.

Abstract: A press assembly has a plurality of processing stations for the processing of sheets. These processing stations are arranged in sucession in a transport direction of the sheets for inline processing of the sheets. At least one of these processing stations is a non-impact printing unit and at least one processing station downstream of the non-impact printing unit is embodied as a dryer. At least one additional processing station is embodied as a coating unit. The coating unit is configured for applying a coating in a form of a varnish to each sheet. A plurality of individually controlled, non-impact printing units are arranged along the transport path of the sheets. Each of the plurality of non-impact printing units is configured as an ink jet printer.

Abstract: A press assembly has a plurality of processing stations for the processing of sheets. These processing stations are arranged in sucession in a transport direction of the sheets for inline processing of the sheets. At least one of these processing stations is a non-impact printing unit and at least one processing station downstream of the non-impact printing unit is embodied as a dryer. At least one additional processing station is embodied as a coating unit. The coating unit is configured for applying a coating in a form of a varnish to each sheet. A plurality of individually controlled, non-impact printing units are arranged along the transport path of the sheets. Each of the plurality of non-impact printing units is configured as an ink jet printer.

Abstract: A method and machine arrangement for sequential processing of sheet-like substrates are disclosed. At least one of a front side and a rear side of the substrates is processed in a production line one after another. A printing ink or another type of ink is applied in at least one non-impact printing device on the respective side of the substrates. The printing ink or the other type of ink is dried. A dispersion coating or a coating cured by UV radiation is then applied onto the respective side of the substrates. The dispersion coating or the coating cured by UV radiation is dried and the substrates are fed to a mechanical processing device for carrying out a further mechanical processing of the substrates. The further mechanical processing is performed by at least one of punching, inserting grooves, separating parts and by breaking out panels from their respective composite in the respective substrate.

Abstract: A turning device in a sheet-processing machine includes a sheet-guiding drum. The sheet-guiding drum has at least one gripper system for securing a front edge of a sheet. The sheet-guiding drum also has at least three casing segments cooperating in the circumferential direction and engaging with one another during format adjustment. A method for the format adjustment of a sheet-guiding drum is also disclosed. The object of the invention is to further improve the sheet guiding on format-adjustable sheet-guiding drums in sheet-processing machines. This is achieved in that a middle casing segment in the circumferential direction has a drive.

Abstract: A turning device in a sheet-processing machine includes a sheet-guiding drum. The sheet-guiding drum has at least one gripper system for securing a front edge of a sheet. The sheet-guiding drum also has at least three casing segments cooperating in the circumferential direction and engaging with one another during format adjustment. A method for the format adjustment of a sheet-guiding drum is also disclosed. The object of the invention is to further improve the sheet guiding on format-adjustable sheet-guiding drums in sheet-processing machines. This is achieved in that a middle casing segment in the circumferential direction has a drive.

Abstract: A method and machine arrangement for sequential processing of sheet-like substrates are disclosed. At least one of a front side and a rear side of the substrates is processed in a production line one after another. A printing ink or another type of ink is applied in at least one non-impact printing device on the respective side of the substrates. The printing ink or the other type of ink is dried. A dispersion coating or a coating cured by UV radiation is then applied onto the respective side of the substrates. The dispersion coating or the coating cured by UV radiation is dried and the substrates are fed to a mechanical processing device for carrying out a further mechanical processing of the substrates. The further mechanical processing is performed by at least one of punching, inserting grooves, separating parts and by breaking out panels from their respective composite in the respective substrate.

Abstract: A system for driving the damping roller in rotary printing machines. The system has a driving mechanism for the damping roller, while the plate cylinder is being driven separately by an individual driving mechanism, for realizing the delta mode of operation. In this mode of operation, the driving mechanism of the damping roller can be disengaged through a switchable transmission from the driving gear train and connected with the individual driving mechanism of the plate cylinder.

Abstract: A method for operating a printing press, which enables a uniform print quality to be achieved during long periods of operation without replacement of the impression cylinder. The printing press comprises several printing units having impression cylinders and a sheet turning device disposed between the printing units. The circumferential surface of the impression cylinder has an ink-repelling surface. The printing press is used to print sheets, until the ink-repelling surface of the circumferential surface of the impression cylinder has been worn away to an extent that the ink-repelling effect is less than a predetermined threshold value, after which a foil, of which the side facing away from the circumferential surface has an ink-repelling surface, is removably placed on the circumferential surface of the impression cylinder.

Abstract: The invention relates to a device for supplying a shingled or overlapping sheet stream from a stack of sheets of a sheet feeder to a feed table of a sheet-processing machine with a belt table. The belt table is provided with at least one revolvingly driven suction belt, which is in operative connection with at least two suction boxes that can be acted upon by negative pressure. The invention can include a device for taking hold of the sheets. The invention also relates to altering a device so that, independently of the material to be processed, a last sheet of a sheet stream can be easily aligned. This objective is accomplished as follows: after the last sheet is detected and its front edge has been placed against the front guide stops, the operation of the suction belt is stopped.

Abstract: A method for operating a printing press, which enables a uniform print quality to be achieved during long periods of operation without replacement of the impression cylinder. The printing press comprises several printing units having impression cylinders and a sheet turning device disposed between the printing units. The circumferential surface of the impression cylinder has an ink-repelling surface. The printing press is used to print sheets, until the ink-repelling surface of the circumferential surface of the impression cylinder has been worn away to an extent that the ink-repelling effect is less than a predetermined threshold value, after which a foil, of which the side facing away from the circumferential surface has an ink-repelling surface, is removably placed on the circumferential surface of the impression cylinder.

Abstract: An apparatus for supplying a shingled or overlapping sheet stream from a stack of sheets of a sheet feeder to a feed table of a sheet-processing machine with a belt table. The belt table is provided with at least one revolvingly driven suction belt in operative connection with at least two suction chambers, which can be acted upon by negative pressure, as well as means for taking hold of the sheets. After the last sheet of the sheet stream is detected and the front edge of the last sheet has been placed against the front guide stop, the operation of the suction belt can be stopped. The apparatus allows the last sheet of a sheet steam be aligned without problems, regardless the material of the sheets to be processed.

Abstract: A method for producing multicolor printing, by using printing plates provided digitally with images and/or print, represents an efficient solution for multi-color printing, in particular in a large format. Printing plates, which had been used in a printing press, are removed from the printing form cylinders, are sent to a device for neutralization, and are neutralized. The neutralized printing plates are fixed at correct registration in an exposure and development unit where they are exposed and developed. The printing plates provided with new images are again applied to the printing form cylinder.

Abstract: An imaging unit for a printing form cylinder of a printing press, the printing form cylinder having a width, the imaging unit comprising: an imaging unit comprising, in combination: a cleaning unit, a coating unit positioned below said cleaning unit, an image creating unit positioned below said coating unit, and an image developing unit positioned below said image creating unit. Each of the cleaning, coating, image creating and image developing units traverse over the width of the printing form cylinder thereby rendering reverse movement without active operation to the other side of the printing form cylinder unnecessary.

Abstract: The invention is a method for retaining an ink profile established during ink infeed, for printing in an inking unit of a printing press containing a drive for the inking unit, an ink dosing device, and a roller group in the inking unit having oscillating rollers and transfer rollers, by delaying printing after ink infeed by interrupting the drive to the inking unit for a time period between the end of ink infeed and delayed printing; and to apparatus for effectuating such drive interruption.

Abstract: The invention relates to an apparatus for image formation on cylindrical surfaces of printing machines. The object of the invention is to provide a compact image formation unit with a broad application rage regarding its usage, the sequence in time and variation in time of the process steps. The invention accomplishes this by processing units mounted on slides movable separately on a common cross bar. Each slide carries at least one processing unit. The cross bar is located in a gusset area between a plate cylinder and a blanket cylinder.

Abstract: The present invention relates to a process for generating a printing image carrying printing form on a printing form cylinder in a printing press. The printing image carrying printing form is an erasable printing form on a printing form cylinder of a printing press with low expenditure and high life expectancy. The printing form cylinder has a magnetizeable surface, which can carry a magnetized image and be coated with a toner. The toner adheres to the printing form cylinder. Printing is completed with the printing form created in this manner. After printing, a laser is used to erase the toner from the printing form cylinder.

Abstract: The invention relates to an apparatus for imaging surfaces in printing presses, whereby the surfaces to be imaged contains image information of the preceding printing job. The apparatus allows a fast and low-cost regeneration of surfaces carrying image information in printing presses. The apparatus comprises at least one printing form cylinder, a disengageable inking unit, and a movable imaging unit having an image creation unit for applying image information to image and non-image carrying layers on the surface. The imaging unit has an erasing unit preceding the movable imaging unit in the moving direction.

Abstract: Multicolor prints are produced on a sheet in a printing machine. More than four colors can be applied to the sheet during its passage through the printing machine. Three printing units and an application unit are associated either directly with a printing cylinder of the printing machine or with a transfer drum which is associated with the printing cylinder. Seven colors, or six colors and a varnish coating can be applied to the sheet by the printing machine.