Abstract: A substrate sheet transporting device is provided. The device includes a first transfer cylinder defining a first axis, a circumferential direction and a transverse direction and a transfer belt (74) extending around the first transfer cylinder. The first transfer cylinder includes first openings for the passage of a gas and the transfer belt includes second openings for the passage of a gas. The transfer belt and the first transfer cylinder define an alignment position in which the second passage openings are aligned with the first passage openings. The transfer device includes a device for adjusting the position of the transfer belt relative to the first transfer cylinder by bringing the transfer belt toward the alignment position. The invention is applicable to cutting devices of rotary printing presses.

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: A substrate sheet transporting device is provided. The device includes a first transfer cylinder defining a first axis, a circumferential direction and a transverse direction and a transfer belt extending around the first transfer cylinder. The first transfer cylinder includes first openings for the passage of a gas and the transfer belt includes second openings for the passage of a gas. The transfer belt and the first transfer cylinder define an alignment position in which the second passage openings are aligned with the first passage openings. The transfer device includes a device for adjusting the position of the transfer belt relative to the first transfer cylinder by bringing the transfer belt toward the alignment position. The invention is applicable to cutting devices of rotary printing presses.

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: A rotary printing press is provided. The rotary printing press includes a continuous printing web of material to be printed, at least one printing unit for printing on the printing web, and a cutting device for cutting the web printed by the printing unit. The rotary printing press further includes a traction device located downstream of the furthest downstream printing unit and upstream of the cutting device. The traction device is for applying a predetermined mechanical tension to the printed web discharged from the furthest downstream printing unit and the printing web is a coated paper web. A method for printing is also provided.

Abstract: A folding device capable of folding signatures and includes a blade cylinder, which is provided with at least one blade; a counter-pressure cylinder, which is provided with at least two counter-pressure elements which together define an axial gap; and a conveying element which is capable of conveying a signature, and which extends in the axial gap. The blade extends over the axial gap and the conveying element extends in the axial gap with spacing from the blade when the blade co-operates with the counter-pressure elements.

Abstract: A transport device for sleeve-shaped covers for cylinders in printing units of a printing press includes a translation element and a number of carrier elements for sleeve-shaped covers. The carrier elements are received on the translation element. A movement of the translation element causes at least a group of carrier elements to be positioned in the vicinity of cylinders of the printing press such that sleeve-shaped covers received on the carrier elements of the group are transferable directly from the carrier elements to the cylinders or that sleeve-shaped covers received on the cylinders are transferable directly to the carrier elements of the group. In the method of changing sleeve-shaped covers, groups of carrier elements are positioned in front of the cylinders so that the sleeve-shaped covers are taken off the cylinders and transferred directly to carrier elements or are transferred and mounted from carrier elements directly to cylinders and are mounted thereon.

Abstract: A folding apparatus (1) in a web-fed rotary printing press for folding signatures (2) which are cut off from a running web of material (6) by a cutting device (40) and carried on a signature transport surface (10) of a folding blade cylinder with the aid of at least one rotating band-shaped conveying element (12, 22, 36, 38) has the feature that the cutting device (4) includes a cutting blade (14) arranged on the folding blade cylinder (8) as well as a rotating anvil element (16) which interacts with the cutting blade; the band-shaped conveying element (12, 22, 36, 38) being passed around the rotating anvil element (16) in such a manner that the band-shaped conveying element acts as a supporting element for the cutting blade (14) during the cutting of the signatures (2).

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 folding apparatus (1) in a web-fed rotary printing press for folding signatures (2) which are cut off from a running web of material (6) by a cutting device (40) and carried on a signature transport surface (10) of a folding blade cylinder with the aid of at least one rotating band-shaped conveying element (12, 22, 36, 38) has the feature that the cutting device (4) includes a cutting blade (14) arranged on the folding blade cylinder (8) as well as a rotating anvil element (16) which interacts with the cutting blade; the band-shaped conveying element (12, 22, 36, 38) being passed around the rotating anvil element (16) in such a manner that the band-shaped conveying element acts as a supporting element for the cutting blade (14) during the cutting of the signatures (2).

Abstract: A transport device for sleeve-shaped covers for cylinders in printing units of a printing press includes a translation element and a number of carrier elements for sleeve-shaped covers. The carrier elements are received on the translation element. A movement of the translation element causes at least a group of carrier elements to be positioned in the vicinity of cylinders of the printing press such that sleeve-shaped covers received on the carrier elements of the group are transferable directly from the carrier elements to the cylinders or that sleeve-shaped covers received on the cylinders are transferable directly to the carrier elements of the group. In the method of changing sleeve-shaped covers, groups of carrier elements are positioned in front of the cylinders so that the sleeve-shaped covers are taken off the cylinders and transferred directly to carrier elements or are transferred and mounted from carrier elements directly to cylinders and are mounted thereon.

Abstract: A folding device capable of folding signatures and includes a blade cylinder, which is provided with at least one blade; a counter-pressure cylinder, which is provided with at least two counter-pressure elements which together define an axial gap; and a conveying element which is capable of conveying a signature, and which extends in the axial gap. The blade extends over the axial gap and the conveying element extends in the axial gap with spacing from the blade when the blade co-operates with the counter-pressure elements.

Abstract: A rotary printing machine is provided which includes at least one printing unit suitable for printing on a continuous printing web of material to be printed and a cutting device which is suitable for cutting the web printed by the printing unit. The rotary printing machine further includes a traction device which is located downstream of the printing unit that is furthest downstream, and upstream of the cutting device. The traction device is suitable for applying a predetermined mechanical tension to the printed web being discharged from the printing unit that is furthest downstream.

Abstract: A sleeve-shaped printing element for mounting on a carrying cylinder in a printing unit of a web-processing rotary printing machine. The element includes a structure formed of material permitting radial expansion of the sleeve-shaped printing element, the carrying cylinder has an elongated axial extent and being formed with ducts for discharging an expansion medium. The ducts open on a circumferential surface of the carrying cylinder, and the expansion medium is pressurizable by a pressure source. The sleeve-shaped printing element is formed with an inner diameter increasing from one end to the other end of the printing element, and is formed with an at least approximately constant wall thickness; and a combination of the printing element and the carrying cylinder.

Abstract: A device for guiding sheet-like copies which are severed from a material web in a cutting nip of a cutting-cylinder pair, including a copy guide disposed in an outlet wedge of the cutting-cylinder pair for gripping leading ends of the sheet-like copies for guiding the copies, the copy guide including revolving transport elements, and actuating drives for displacing the revolving transport elements in a lateral direction so as to adapt the transport elements to different positions and widths of material webs.

Abstract: A device for guiding signatures in a folder of a rotary printing machine includes at least one guide belt disposed near a transporting path of the signatures, and extending transversely to a transporting direction of the signatures, the at least one guide belt being formed with guide surfaces defining the transporting path.

Abstract: A method for regulating the ink-to-wetting agent equilibrium in a rotary offset printing machine, the wetting agent quantity being determined especially using the signals of a sensor which measures the light reflectance of an area on the printing form of the rotary printing machine that is wetted by a wetting agent.

Abstract: A sleeve-shaped printing element for mounting on a carrying cylinder in a printing unit of a web-processing rotary printing machine. The element includes a structure formed of material permitting radial expansion of the sleeve-shaped printing element, the carrying cylinder has an elongated axial extent and being formed with ducts for discharging an expansion medium. The ducts open on a circumferential surface of the carrying cylinder, and the expansion medium is pressurizable by a pressure source. The sleeve-shaped printing element is formed with an inner diameter increasing from one end to the other end of the printing element, and is formed with an at least approximately constant wall thickness; and a combination of the printing element and the carrying cylinder.

Abstract: A device for guiding sheet-like copies which are severed from a material web in a cutting nip of a cutting-cylinder pair, including a copy guide disposed in an outlet wedge of the cutting-cylinder pair for gripping leading ends of the sheet-like copies for guiding the copies, the copy guide including revolving transport elements, and actuating drives for displacing the revolving transport elements in a lateral direction so as to adapt the transport elements to different positions and widths of material webs.

Abstract: A method for regulating the ink-to-wetting agent equilibrium in a rotary offset printing machine, the wetting agent quantity being determined especially using the signals of a sensor which measures the light reflectance of an area on the printing form of the rotary printing machine that is wetted by a wetting agent.