Abstract: An apparatus and method for forming cross folds in a web-fed printing press is disclosed. A folding unit has a longitudinal folding device and a cross folding device, which is arranged downstream from the longitudinal folding device, as seen in the transport direction of the printing substrate. The longitudinal folding device has one single former, where printing substrate webs entering the former as a strand are cut by a longitudinal cutting device assigned to the former or by at least one longitudinal cutting device assigned respectively to at least one printing substrate web of the strand by longitudinal cutting into partial webs, which exit the former as a strand, wherein the strand exiting the former can be divided downstream from the former and upstream from the cross folding device into at least three partial strands, and where a stitcher is assigned to at least one of the partial strands.

Abstract: A printing unit of a printing press includes a form cylinder and a transfer cylinder and an inking unit. A drive rotates the form cylinder to a position for effecting a printing plate change on the form cylinder in response to an actuating signal from a regulating a or control device. The actuating signal is determined as a function a circumferential register value of the form cylinder.

Abstract: A transfer plate, particularly a blanket plate, for a transfer cylinder, with a plate-like support, where a blanket being used for ink transfer is applied to a first side of the plate-like support, and where a film is applied to a second side of the plate-like support that is opposite from the first side, via which film a packing height of the transfer plate on a transfer cylinder can be predetermined. The film is applied to the second side of the plate-like support in such a way that a surface of the support covered by the film on the second side is smaller than a surface of the support covered by the blanket on the first side.

Abstract: A method for controlling the cut register in a web-fed rotary press, includes registering an actual value measurement of a position of cut register marks on a printed material web by measuring positions of printing cut register marks on the printed material web, using the measured positions in control loops as actual values of positions of cuts for cut register control, and correcting a first set value of a cut register setting element assigned to the printing material web based on a mathematical model for an error contribution of a proportion of the path of the printing material web that is not registered by the actual value.

Abstract: To develop a novel gravure printing form, which is simple to produce and is highly suitable with respect to a variation of formats, the invention discloses the use of a steel carrier sleeve in the form of a master sleeve. The initial form of said sleeve is a rectangular plate with a wall thickness of between 0.1 mm and 0.4 mm, which is given the desired hollow cylindrical form by bending, the opposing edges of the plate being permanently joined together, in particular by welding. A copper gravure layer is applied to the outer surface of the plate, a basic grid being etched into the copper gravure layer by means of a laser gravure process. The basic grid is then uniformly filled with a liquefiable substance to form the gravure printing form and the filler material is removed from the depressions of the basic grid to produce the required image.

Abstract: A method and apparatus for securing a printing plate on a plate cylinder is disclosed. A tensioning bar is moved by an actuating device toward an entrance slot defined by an outer circumferential edge of the cylinder to engage a rear end of the printing plate. The tensioning bar is disposed on a profile body disposed within a channel defined by the cylinder and extending parallel to an axis of the cylinder. The actuating device is disposed in the profile body. The tensioning bar is then moved away from the entrance slot by the actuating device to exert a tensioning force on the rear end of the printing plate.

Abstract: In a method for controlling the cut register in a web-fed rotary press, in which the position of the cut in at least one printing material web is set by adjusting the rotational speed of at least one pull unit conveying the printing material web, the rotational speed change carried out on the pull unit is also carried out simultaneously on all the pull units that follow in relation to the running direction of the printing material web and convey only this printing material web. The first pull unit whose rotational speed is adjusted is preferably a printing unit of the press unit printing the printing material web.

Abstract: In a method for controlling the inking in at least one inking unit of an offset press, namely for controlling the zonal inking that can be adjusted by inking zone actuating elements of the respective inking unit, measurement regions are measured for this purpose and actual values determined in the process are compared with predefined intended values in order to generate actuating signals for the inking zone actuating elements on the basis of the comparison between the actual values and the intended values. Control deviations between the measured actual values and the predefined intended values are modified on the basis of a model of the respective inking unit and/or on the basis of data from the subject.

Abstract: A printing unit having at least one press unit, the, or each, press unit having at least one form cylinder, a transfer cylinder, an inking unit and preferably a damping unit, and having at least one imaging device for imaging and/or de-imaging a rewritable and erasable printing form positioned on the form cylinder. The inking unit, if appropriate together with the damping unit, can be pivoted with respect to a form cylinder from a printing position into a rest position. The imaging device can be pivoted with respect to the form cylinder from an imaging position into a rest position. The imaging device is pivoted into a rest position when the inking unit and, if appropriate, damping unit is pivoted into the printing position and, when the imaging device is pivoted into the imaging position, the inking unit and, if appropriate, the damping unit is pivoted into a rest position.

Abstract: An apparatus and method for collecting a printed copy is disclosed. A collecting cylinder is operable in a non-collect mode and a collect mode. A cam collect is coupled to the collecting cylinder. The collecting cylinder is switchable between the non-collect mode and the collect mode by a relative rotational movement between the collecting cylinder and the cam collect.

Abstract: An apparatus and method for clamping printing plates on a plate cylinder is disclosed. A clamping element is integrated into a lockup slot of a plate cylinder with an actuating element. The clamping element is transferred by the actuating element between a first position, where the clamping element clamps the leading end and/or the trailing end of the printing plate, and a second position, where the clamping element releases the leading end and/or the trailing end of the printing plate. The clamping element can be adjusted exclusively in the radial direction of the plate cylinder and the actuating element exclusively in the axial direction of the plate cylinder such that, depending upon the relative axial position of the actuating element with respect to the clamping element, the clamping element is displaced either radially outwardly for clamping the printing plate or is displaced radially inwardly for releasing the printing plate.

Abstract: A web press with at least one printing couple, where the at least one printing couple or each printing couple is provided with a form cylinder, a transfer cylinder, an inking couple, and preferably a dampening unit, and a transfer system is assigned to the transfer cylinder, and a printing form system is assigned to the form cylinder. The transfer system assigned to the transfer cylinder of the printing couple or each printing couple is constructed with several parts which are disposed along the axial direction of the transfer cylinder.

Abstract: Apparatus for transporting printing paper rolls includes a frame for accommodating a printing paper roll, and a moving mechanism having a plurality of running wheels mounted on the frame and supporting the frame on a floor. The wheels can be aligned for travel in a first direction on a pair of first running rails on the floor, parallel to a printing press. When the frame is lifted by a lifting device so that the wheels are above the first rails, the wheels can be adjusted for travel in a second direction on a pair of second running rails which extend perpendicular to the first running rails.

Abstract: A method and apparatus for handling printing plates on a web-fed printing press is disclosed. Printing plates imaged on an imaging device are assigned a coding relating to the plate cylinder position of the printing couple at which the respective printing plate is used. Imaged printing plates are inserted into cassettes such that printing plates for several printing couples are positioned in each cassette, where each cassette is assigned a data record relating to the position at which each printing plate is arranged within the respective cassette. The loaded cassettes are conveyed to the region of the printing couples where the data record assigned to the cassettes is also made available in the region of the printing couples. The printing plates are removed from the cassettes and, with a comparison to the data record assigned to the respective cassette, supplied to the respective printing couples.

Abstract: For transferring a coating in the form of a desired image coating from a backing film to a printed sheet, an adhesive layer in the form of the desired image is applied to the printed sheet. The transfer foil comprising the image-type coating is rolled over the printed sheet using contact pressure in a coating unit (2), in such a way that the coating adheres to the adhesive sections, thus forming an image. To improve the flexibility of this application in a printing press, either the coating unit or the adhesive application unit (1) and the coating unit (2) are located in one or more coating modules of a printing press, thus producing a simple, compact film transfer module (F).

Abstract: A printing press cylinder having a cylinder base body and a functional layer, which forms an outer surface of the printing press cylinder, is disclosed. The cylinder base body is made of phenolic resin impregnated textile fibers or of hardboard.

Abstract: An apparatus and method for printing a printing substrate web in a web-fed printing press is disclosed. The web-fed printing press has at least one printing unit for printing at least one, preferably several, printing substrate webs. The web fed-printing press comprises a web guide device, through which the or each printing substrate web can be transported in such a way that, independent of the web guidance of the or each printing substrate web through the web guide device, at least one printing substrate web can be processed on an upper side and/or on a lower side by at least one processing device that is positioned in the region of the web guide device.

Abstract: A method for handling printing plates, namely for arranging printing plates in cassettes that are used as printing plate repositories during a printing plate change, is disclosed. Each printing plate is assigned a coding before, during or after imaging relating to a plate cylinder position of a printing couple at which the respective printing plate is used. Each imaged and coded printing plate is transported to the region of a cassette. In the region of each cassette, the coding of the printing plates is read out, and in doing so a check is made to see whether the printing plates are located at the correct cassette. If it is established that the printing plates are located at the correct cassette, a defined accommodation position in the cassette is released for each printing plate and the printing plate is positioned at this accommodation position within the cassette.

Abstract: A method for operating an inking system of a printing press, where the inking system has an ink fountain in which printing ink is kept in readiness, where the inking system has a doctor roller which holds printing ink kept in readiness in the ink fountain, where the inking system has ink sliders or ink blades which adjust the amount of ink to be transferred per ink zone from the ink fountain to the doctor roller, and where the inking system has a film roller which transfers printing ink from the doctor roller to at least one inking system roller downstream from the film roller. At least one ink slider or ink blade is controlled in such a way that the amount of ink transferred zonally to the doctor roller varies over the circumference of the doctor roller.

Abstract: A method for monitoring and analysing the printing process of a press includes both measured data which reproduce or influence the quality of the printed product and measured data which reproduce the state and consumption of the press or its parts are acquired. To monitor and analyse the printing process, the acquired measured data are placed in a relationship with one another, so that the printing process can be monitored effectively via new data produced as a result.