摘要:
A printing system includes a first printing machine that is provided in the form of a newspaper printing machine and which comprises at least two first printing units that are provided in the form of printing towers and with a number of printing machines arranged one above the other for effecting double-sided printing of a substrate in multiple colors. A first folding funnel is arranged in a machine exit of these first printing units. A second printing machine is provided with at least one second printing unit and with a dryer that is situated in the machine exit of the second printing unit. The at least one second printing unit is positioned with respect to its printing location, and when viewed from above, is arranged next to the machine exit of the first printing units provided in the form of printing towers. A web, or a partial web, which has been printed by the second printing unit, and which has passed through the dryer, can be diverted by 90° from a direction of conveyance that is perpendicular to a machine exit and can be guided in a direction of conveyance that is parallel to the machine exit.
摘要:
A printing machine system includes a first printing machine which is configured as a newspaper printing machine and which has at least two first printing units that are structured as printing towers, each with a plurality of superimposed printing groups that are usable for multicolor printing. The first printing machine also includes a first folder structure which is arranged in a machine alignment of the at least two first printing units. A second printing machine has at least one second printing unit and a second folder structure. The first printing units and the at least one second printing unit are arranged in one row. The first printing units, which are configured as printing towers, differ from the at least one second printing unit in at least one of their effective printing length and a circumference of imaging printing group cylinders.
摘要:
A printing group of a printing press includes at least one forme cylinder that has at least one axially extending opening on the external surface of the cylinder. That at least one axially extending opening forms a channel in the cylinder and in which channel several printing forme end retaining assemblies are provided. These retaining assemblies are provided in the channel on both sides of a center plane which bisects the forme cylinder perpendicularly to its axis of rotation. A first one of these retaining assemblies that adjoins the center plane cooperates with a second retaining assembly, located on the other side of the center plane, to both engage the same printing forme, in a first mode of operation. In a second mode of operation, the first retaining assembly cooperates with a third retaining assembly, that is located further away form the center plane, and on the same side thereof as the first retaining assembly, to engage a second printing forme.
摘要:
A printing unit is comprised of at least two pairs of two cylinders each. The two cylinders in each pair are a transfer cylinder and a forme cylinder. The transfer cylinder and the forme cylinder are each embodied with a width sufficient for printing six newspaper pages arranged axially next to each other. The transfer cylinder of each pair cooperates with a counter-pressure cylinder, that is embodied as a satellite cylinder to form a printing head in a so-called print-in-place arrangement.
摘要:
A dressing is pressed onto a surface of a cylinder of a printing machine by the use of at least two pressing elements. These two pressing elements are separated from each other in a circumferential direction of the cylinder. A portion of each of the two pressing elements can be moved toward or away form the surface of the cylinder independently of each other. The pressing elements are preferably arranged on supports that are connected to each other. Each of the pressing elements is provided with its own independent actuator.
摘要:
A printing group of a printing press is comprised of at least one pair of cylinders which include a form cylinder and a transfer cylinder. The transfer cylinder cooperates with an impression cylinder to apply ink to a web of material, with the web being guided vertically. The circumference of at least one of the transfer cylinders and the impression cylinder is an integral multiple, greater than one of the circumference of the form cylinder. The transfer cylinder and the form cylinder have respective drive motors that are mechanically independent from the drive of the respective other cylinder.
摘要:
A characterizing number for a cylinder dressing having an elastic layer is determined. The characterizing number is then usable to select suitable geometries of rollers in a printing press. If the roller geometry is already known, the characterizing number facilitates the selection of a suitable dressing. The characterizing number characterizes the roll-off behavior of a dressing independently of a measuring device used to determine the number or an application in a particular printing group.
摘要:
A cylinder of a rotary printing machine has a peripheral surface which is divided into at least two segments that are situated adjacent to each other, in an axial direction of the cylinder, by a circumferential groove. Those circumferential grooves can be closed by the placement in the groove of a suitable inlay or insert element. That inlay or insert element is formed of several parts, typically of two inlay or insert parts, whose peripheral surfaces complement each other to form a continuous cylindrical peripheral surface on the cylinder after the inlay or insert parts have been placed in the grooves.
摘要:
A cylinder for a rotary printing press is supported by bearings that are situated outside of the spaced side frames of the press. Each bearing is arranged in a bearing bushing that is, in turn supported by the press lateral frame. All of the bearing is located away from the lateral frame.
摘要:
An offset printing press includes a plurality of printing units. These printing units are typically each so-called five cylinder printing units. The spacing distance between two adjacent ones of these five cylinder printing units can be adjusted or modified.