Abstract: A printing unit including: a frame; a first print station (6) having a first blanket cylinder (10) and a first plate cylinder (12); an impression cylinder (14); and a first spacer device (100) designed to move the cylinders relative to each other between a printing configuration in which the plate cylinder (12) is in contact with the associated blanket cylinder (10) and a non-printing configuration in which the plate cylinder (12) is moved away from the blanket cylinder (10) and the blanket cylinder (10) is moved away from the impression cylinder (14). The printing unit also includes a second spacer device (200) designed to regulate the distance between the cylindrical surfaces of the first blanket cylinder (10) and the impression cylinder (14), said second spacer device (200) including means for moving the impression cylinder (14) radially relative to the first blanket cylinder (10) and relative to the frame.

Abstract: The sheet transporting device of the invention includes: a transferring device (64) adapted to transfer a sheet (30), a conveying device (66; 66A) for conveying a sheet transferred from the transferring device (64) onto the conveying device, and a controlling means (76) adapted to control the speed of the conveying device (66; 66A) and defining a transfer cycle (CT). The controlling means (76) is adapted to slow down the conveying device (66) when a sheet is conveyed by the related conveying device and to accelerate the conveying device when no sheet is present on said conveying device. The invention can be used for the cutting devices of rotary printing machines.

Abstract: The invention relates to a sheet (30) conveying device (D1, D2) comprising a transport roll (56, 58) for conveying a flat substrate (18, 30), said transport roll having a transport surface (82, 102) which comes into contact with the flat substrate and has a plurality of recesses (84, 104), and a vacuum device (64) for creating a depression in the plurality of recesses. The device also comprises a device (120) for cleaning the transport surface (82, 102). The invention is applicable to devices for ejecting sheets from printing presses.

Abstract: A device for controlling a rotary press includes a main evaluation unit which is provided with a main signal inlet, at least a first main signal outlet and a first main transformation device. The device further includes a master generator which is capable of generating a master signal which represents a reference value of the rotary press, and a first interface which is capable of generating a first periodic signal in accordance with the master signal and transmitting this first periodic signal to the main signal inlet.

Abstract: A sleeve-like cover for a cylinder in a press for holding a plate-like printing form, having a slit which runs substantially parallel to the axis of rotation of the cover, it being possible for edges of a printing form to be fixed in the slit by means of at least one retaining force element. Sleeve-like covers with different external diameters for a cylinder in a press are used in order to vary the printing length of the press.

Abstract: A device for the longitudinal application of an adhesive in a folder (13) of a webprocessing printing press (14) is disclosed. The folder (13) comprises a former board (1), a device for longitudinal perforation (5) having a perforating blade (16) that is adjustable in a direction transversal to the direction of travel (15), and a cross-cutter arranged downstream of each other in the direction of travel (15) of the web of printing material (12). The device for the longitudinal application of an adhesive includes an adhesive applicator arranged downstream of the former board (1) and upstream of the cross-cutter (8) as viewed in the direction of travel (15) and having an applicator head (22) that is adjustable with the perforating knife (16) in a correlated manner.

Abstract: A folding apparatus (30) having at least one conveyor belt (10) which is used to convey signatures (64) at least on a section of a path (66, 68) of the signatures (64) through the folding apparatus (30). The folding apparatus (30) features at least one monitoring device (12) with which the conveyor belt (10) is associated. The monitoring device (12) contains a detector (20) for radiation (22) scattered from at least a part (24) of the conveyor belt (10). The condition of the conveyor belt (10) can be determined and classified in an advantageous manner so that the machine operator can receive a signal for timely replacement so as to avoid an unexpected breakage of the conveyor belt (10).

Abstract: A folding apparatus (30) having at least one conveyor belt (10) which is used to convey signatures (64) at least on a section of a path (66, 68) of the signatures (64) through the folding apparatus (30). The folding apparatus (30) features at least one monitoring device (12) with which the conveyor belt (10) is associated. The monitoring device (12) contains a detector (20) for radiation (22) scattered from at least a part (24) of the conveyor belt (10). The condition of the conveyor belt (10) can be determined and classified in an advantageous manner so that the machine operator can receive a signal for timely replacement so as to avoid an unexpected breakage of the conveyor belt (10).

Abstract: A device for perforating material webs by perforating tools accommodated on perforating cylinders and capable of producing perforations on copies in an exactly correct position with respect to cross-folds formed in the copies, the perforation position being adjustable during machine operation, the perforating tools being cooperatively related with associated perforating strips for producing transverse or cross-perforations, includes at least one perforating bar disposed coaxially with at least one of the perforating cylinders, the perforating tools and the perforating strips being accommodated on at least one of the perforating bars, the at least one of the perforating cylinders being adjustable relative to at least another of the perforating cylinders; a folder including the perforating device; and a pin-less folder including the perforating device.

Abstract: A method for removing from at least single-layer webs of material, particles formed by slitting devices which are arranged along a web travel path in a slitting zone, includes generating a suction zone associated with the slitting devices in accordance with the position of a cutting location; a device for performing the method; a jobbing web-fed rotary printing machine including the device; and a newspaper rotary printing machine including the device.

Abstract: A device for positioning a cross cut relative to printed images on at least one printing material web in a web-fed press having at least one printing unit, includes a cross cutter. Also included is a computing device for generatingtherein at least a first control signal for changing a phase angle of the printing unit and the cross cutter relative to one another. A path length variation device for changing a path length through which the printing material web runs between the printing unit and the cross cutter is also included. The computing device further serves for generating a second control signal for changing the path length and, by interaction of the change in the relative phase angle and the change in the path length, serves for adjusting the positioning of a cross cut on the printing material web. A web-fed printing press includes the cross-cut positioning device. A method for operating the device is also provided.