Abstract: The invention relates to a method and apparatus for setting register on a multicolor printing machine (1) having color printing units (6, 6′, 6″, 6″) allocated to various printing inks and having image cylinders (2, 2′), equipment (3, 3′) for producing images, in particular electrostatic latent images, on the image cylinders (2, 2′, . . . ), a carrier (4) for printing substrates (15) and image transfer points (5, 5′, 5″, 5′″) for the transfer of the color separations (7, 7′, . . . ) from the color printing units (6, 6′, 6″, 6′″) to the printing substrates (15), an allocation of the image productions (11, 11′) on the image cylinders (2, 2′, . . . ) to the printing substrates (15) being carried out in order to achieve coincidence of register of the color separations (7, 7′, . . . ) in the print.

Abstract: The invention relates to a method and apparatus for setting register in a multicolor printing machine (1) having a number of items of equipment (2, 2′, . . . ) for the digital production of color separations (3, 3′, . . . ), the actions of setting up and combining the color separations (3, 3′, . . . ) being controlled, in order to set the register, in such a way that in-register prints are achieved, influencing variables (4, 4′, 4″) which are caused by the printed pages and have an influence on the register being taken into account in setting up and combining the color separations (3, 3′, . . . ) before the onset of a change in said influencing variables.

Abstract: The invention relates to a method and apparatus for the digital production of color separations (3, 3′, . . . ), the actions of setting up and combining the color separations (3, 3′, . . . ) being controlled when printing substrates (16) of a different grade are fed in, in order to correct the register setting.

Abstract: The invention relates to apparatus and a method for correcting register faults based on changes in machine state (4, 4′, . . . ; 5, 5′, . . . ) in a multicolor printing machine (1) having a number of printing units (13, 13′, . . . ) with image cylinders (14, 14′, . . . ) and equipment (2, 2′, . . . ) for the digital production of color separations (3, 3′, . . . ) on the image cylinders (14, 14′, . . . ), the actions of setting up and combining the color separations (3, 3′, . . . ) being controlled in such a way that in-register prints are achieved.

Abstract: The invention relates to a method and apparatus for correcting register faults in a multicolor printing machine (1) having a number of items of equipment (2,2′, . . . ) for the digital production of color separations (3,3′, . . . ), correction values being determined and assigned to the angular positions (4,4′, . . . ) of at least one image cylinder (5,5′, . . . ) and, as a result, being taken into account for the control of the production of the color separations (3,3′, . . . ) on said image cylinder.

Abstract: The invention relates to a method, apparatus and a printing machine (1) having a control device (8, 8′, 8″, 8′″) for the digital control of an element of the printing machine (1), an assignment (6, 6′) of two non-coincident digital variables (2 and 2′) being carried out.

Abstract: The invention relates to a method and apparatus for setting register in a multicolor printing machine (1) having a number of items of equipment (2, 2′, . . . ) for the digital production of color separations (3, 3′, . . . ), the actions of setting up and combining the color separations (3, 3′, . . . ) being controlled, in order to set the register, in such a way that in-register prints are achieved.

Abstract: The invention relates to a method and apparatus for setting register, with detection of the entry of a printing substrate (2) into a printing machine (1) and calculation of the beginning of digital production of color separations (3, 3′, 3″, 3′″) to achieve an in-register position of the color separation prints (4, 4′, 4″, 4′″) on a printing substrate (2).

Abstract: The invention relates to a method and apparatus for minimizing the influence of register differences in multicolor printing, in particular in digital printing processes, register values (1) in the transport direction (2), which are different transversely with respect to this direction being set to a value between the extremes (3, 3′).

Abstract: The invention relates to a method and apparatus for setting register in a multicolor printing machine having a number of items of equipment for the digital production of color separations, the actions of setting up and combining the color separations being controlled when printing substrates of a different grade are fed in, in order to correct the register setting.

Abstract: The invention relates to a method and apparatus for setting register in a multicolor printing machine (1) having a number of items of equipment (2, 2′, . . . ) for the digital production of color separations (3, 3′, . . . ), the print results being registered and used to control the production of the color separations (3, 3′,. . . ) in such a way that in-register prints are achieved, and a change in the dimensions (7, 8, 7′, 8′) of the printing substrates (4) being determined by means of the print, in order to take this change into account for renewed printing.

Abstract: A device for conveying thin workpieces for machines used in the printing technology field having at least one movable conveying element having an electrically insulating contact surface supporting at least one workpiece as it is being conveyed, the contact surface of the conveying element being formed with regions of varying charge density by electric charges applied thereto, and the workpiece being held on the contact surface by electrostatic forces, includes a multiplicity of contacts engaging the surface of the conveying element, the multiplicity of contacts including at least one given group thereof, the multiplicity of contacts being disposed transversely to a direction in which the thin workpiece is conveyable by the conveying element and being distributed across the entire width of the workpiece, the multiplicity of contacts being connected to at least one d.c. voltage source.

Abstract: A device for conveying thin workpieces in a machine used in printing technology, which device includes at least one moving conveying element, on whose surface are formed areas of changing charge density, the adherence of the workpiece on the conveying element being supported by electrostatic forces wherein contacts are provided for forming the areas of changing charge density, the contacts touching the conveying element and being connected to at least one voltage source, and an electric current flow being present, via the contacts in the material of the conveying element.