A security paper printing machine has a printing unit comprising at least one imaging cylinder, at the printing point of which, the printing point, in sections, of passing printing material, in a cycle of a fixed printing length with respect to the printing material feed to the printing point, can be printed with print images of a same print image length. A dryer device has a dryer comprising one or a multi-part drying unit that, in the printing material path, is downstream of the printing point. Printing materials passing through the dryer can be subjected to radiation for the purpose of drying the same. A control unit is provided for controlling the drying unit of the dryer with respect to activating and deactivating the same, which control unit is in signal connection with a transmitter providing signals representing one of the machine phase and the progress of the printing material, and which, per cycle, effectuates a switching on and off of or, at least part of, the drying unit after a sequence comprising at least one active and at least one inactive phase, in correlation with the position of one of the machine and the printing material phase.

A value-document printing machine includes, in the path of the printed material, at least a first printing site, at which first printing site a printing material passing through that first printing site can be printed, in segments, on at least a first of the two sides of that first printing material in a cycle at a print image width with a cycle length that is fixed in relation to the advancing of the printing material at the printing site, with print images of a print material length that is shorter than the cycle length. A second printing site follows next downstream that first printing site and through which the printing material passing through the printing site can likewise be printed with print images on at least a second of the sides of the printing material. A dryer device has a dryer which comprises a one- or a multi-part radiation assembly and which is arranged in the printing material path one of between the first and second printing sites and in the printing material path following the second printing site. Radiation can be supplied to the printing material passing through the dryer on the transport path of the printing material in order to dry the printing material. A control device that controls the drying unit of the dryer, with regard to activation and deactivation, is provided.

A dryer device for a printing press that prints in at least one printing position on a printing substrate by use of at least one printing unit, in particular a printing press for securities, includes a dryer with a drying unit formed by an array of a plurality of adjacent radiation sources. That array extends at least over the maximum width of the printing substrate and is used to supply radiation to the printing substrate in each activated state for drying the latter. A control device allows the radiation sources or some of the radiation sources to be switched on or off in a repeating cycle that comprises a sequence with at least one active and at least one inactive phase in correlation with one of a press and a printing-substrate phase position. The dryer device comprising the dryer and the control device is configured to switch on and switch off, for each cycle, only some of the radiation sources in some sections in at least four pre-definable radiation-source groups, spaced approximately equidistantly, i.e. at a distance deviating by a maximum 20% from the average distance and transversely to a transport direction, one of concurrently and collectively according to a sequence comprising one of multiple and at least three equidistant active phases of the same first lengths. The invention also relates to a printing press, in particular to a printing press for securities, comprising a dryer device of this type. During operation, the printing substrate is supplied with radiation in multiple tracks spaced apart transversely to the transport direction, synchronously with one of the printing substrate feed and with the press phase.

Examples include a cylinder for aligning magnetic or magnetizable particles contained in a coating agent on a substrate in a region of an outer circumference of the cylinder in a matrix-like manner. A number of nm magnetic elements (where n, m are integers>1) that provide magnetic fields are arranged in n rows extending in an axially parallel manner and in m columns extending in a circumferential direction. At least two magnetic elements are provided one behind the other in the same column, disposed at magnetic element carriers that differ from one another, and can be positioned on the cylinder in the circumferential direction independently of one another. The at least two magnetic elements are mounted so as to be adjustable relative to the magnetic element carrier carrying the magnetic element in the circumferential direction within an adjustment range.

Examples include a cylinder for aligning magnetic or magnetizable particles contained in a coating agent on a substrate. In the region of the outer circumference of the cylinder, magnetic elements are arranged in n rows extending axially and in m columns extending circumferentially. At least two magnetic elements are provided one behind the other in the same column, mounted as a group at a shared carrier element and can be varied with respect to their axial position at the cylinder, collectively and independently of the magnetic elements of an adjoining column. The at least two magnetic elements of the same column are arranged at respective magnetic element carriers that can be positioned at the shared carrier element independently of one another in the circumferential direction and/or can be detached from the carrier element and/or are adjustable in the axial direction within an adjustment range.

Examples include a printing unit having a forme cylinder, an impression cylinder, and a frame having two frame side walls located opposite one another. Two base modules each have respective base side walls that are an integral with the respective frame side walls. Each base module has four installation areas for rotational transport bodies, the relative positions of which coincide. Respective first two installation areas along a transport path form a selection group of each respective base module. The impression cylinder forms a printing nip with the forme cylinder. A rotational transport body is arranged in each installation area and a print head at a non-impact printing position is aligned with a rotational transport body arranged in an installation area of the first base module. Additionally, a print head of the non-impact printing position is aligned with a rotational transport body in an installation area of the second base module.

Examples include a cylinder for aligning magnetic or magnetizable particles contained in a coating agent on a substrate. In the region of the outer circumference of the cylinder, in a matrix-like manner, a number of magnetic elements that provide magnetic fields are arranged in n rows extending in an axially parallel manner and in m columns extending in the circumferential direction. Additionally, suction elements with suction openings pointing outwards are also arranged in the circumferential region. A plurality or all of the magnetic elements are arranged one behind the other and are each combined with at least one assigned suction element in respective modular units as action units in a plurality or all of the columns of magnetic elements. The action units can be positioned in each case independently of the other action units in the circumferential direction and/or can be detached from the cylinder.

Examples include a printing unit having a first tool-dependent printing nip formed by a pair of cooperating rotational bodies. The printing unit includes, along a transport path, downstream from the first tool-dependent printing nip, a first alignment cylinder and a first non-impact printing position to which at least one first print head is assigned. The printing unit further includes, along the transport path, downstream from the first non-impact printing position, a first curing device having a first curing area assigned thereto. The printing unit, downstream from the at least one first alignment cylinder, including at least one second alignment cylinder and a second non-impact printing position, to which a second print head is assigned. The printing unit, downstream from the second non-impact printing position, comprising a second curing device having a second curing area assigned thereto.

Examples include a printing unit having a first tool-dependent printing nip formed by a pair of cooperating rotational bodies. The printing unit includes, along a transport path, downstream from the first tool-dependent printing nip, a first alignment cylinder and a first non-impact printing position to which at least one first print head is assigned. The printing unit further includes, along the transport path, downstream from the first non-impact printing position, a first curing device having a first curing area assigned thereto. The printing unit, downstream from the at least one first alignment cylinder, including at least one second alignment cylinder and a second non-impact printing position, to which a second print head is assigned. The printing unit, downstream from the second non-impact printing position, comprising a second curing device having a second curing area assigned thereto.

Examples include a printing unit, which has at least one first tool-dependent printing nip formed by a pair of cooperating rotational bodies. The printing unit includes, downstream from the first tool-dependent printing nip, along a transport path provided for a transport of substrate, at least one first alignment cylinder and at least one first non-impact printing position, to which at least one first print head is assigned. The printing unit further includes, downstream from the first non-impact printing position, along the transport path provided for the transport of substrate, at least one first curing device having a first curing area assigned thereto. Additionally, in the region of the first non-impact printing position, the transport path provided for the transport of substrate is defined by the first alignment cylinder or a rotational transport body arranged directly upstream from the first alignment cylinder.