Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
  • B41F—PRINTING MACHINES OR PRESSES
  • B41F13/00—Common details of rotary presses or machines
  • B41F13/08—Cylinders
  • B41F13/10—Forme cylinders
  • B41F13/12—Registering devices

Definitions

• the invention relates to a method for register control according to the preamble of claim 1. Furthermore, the invention relates to a method for register adjustment according to the preamble of claim. 7
• a partial printing image is applied in a special ink on the sheet.
• the sheets are preferably moved by four successively arranged printing units, wherein in each of the printing units, a partial printing image in the printing inks cyan, magenta, yellow and black is applied to the sheets. Accordingly, when printing multicolor print images on the print sheets, various partial print images must be made to coincide with each other. The same applies if the print sheet is printed in a coating unit with a partial print image of paint.
• register control e.g. in the side register control, proceeding so that a printed image generated by the overprinting of a plurality of partial images is analyzed, based on this analysis, a reference printing unit is determined, and are controlled for register control register adjustment of the other printing units, whereas a Registerverstell responded the reference printing unit is not driven.
• all other printing units are aligned with respect to the register control according to the reference printing unit according to the definition of a reference printing unit.
• actuator ranges of drives of the registration registers of the printing units to be aligned at the reference printing unit may not be sufficient to match the partial image images with respect to the reference printing unit. If this is the case, then another reference printing unit is determined according to the prior art, and all other printing units are then aligned again to this reference printing unit.
• modified setpoint values are determined from actual register values, register setpoints and adjustment ranges for the drives of the register adjustment devices, wherein the register adjustment devices of all printing units involved in the printing are adjusted together.
• the present invention is based on the problem to provide a novel method for register control or register adjustment.
• At least one offset namely a circumferential register offset and / or a page register offset and / or an oblique register offset, is taken into account in order to print a printed image to be printed in the printing units to a defined position dependent on the or each offset on a printing material to be printed.
• At least one offset is taken into account for register control or register adjustment.
• a circumferential register offset and a page register offset and a Schrägregisteroffset is taken into account to print the printed image to be printed with a well-defined position and orientation on the substrate to be printed.
• the printing material to be printed accordingly provides, as it were, a virtual partial print image in a virtual printing ink onto which the real partial print images in the real printing inks are printed in the desired coverage.
• the definition of the offsets preferably takes place via non-printed registration marks, e.g. when cutting sheets on the signatures are applied. These register marks together with the offsets define the position of the virtual partial print image. An absolute positioning of the printed image is thus possible and running away of the printed image during the printing process can be prevented.
• printed images can be printed on the front and back side exactly to each other when the registration marks are mounted on the front and back.
• the corners or edges of signatures may also be used as registration marks.
• the present invention relates to a method for register control or register adjustment on a printing machine, wherein in the register control online during the printing process register actual values of the printing units with register setpoints of the same are compared to generate based on these comparisons control signals for the drives corresponding register adjustment , In the case of register adjustment, control signals for drives of the corresponding register adjustment device are generated offline for the printing process by manual actuation of a corresponding input key.
• the inventive method for register control or register adjustment can be used in the circumferential register and / or page register and / or oblique register.
• the details of register control or register adjustment with the aid of which partial printing images of a printed image to be printed on a printing image in the desired coverage can be applied to the printing material to be printed, are familiar to the person skilled in the art and need no further explanation.
• z. B. on the DE 10 2005 042 284 A1 referenced which discloses a register control or register adjustment, is operated in the no reference printing unit.
• the present invention now relates to such details of register control or register adjustment, by means of which the entire print image to be printed with a desired position and orientation can be printed on a substrate to be printed.
• At least one offset is taken into account in register control or register adjustment in order to print a printed image to be printed in the printing units to a defined position dependent on the or each offset on a printing material to be printed.
• a circumferential register offset and a page register offset and a skew register offset are taken into account in order to print the printed image and therefore all the partial printed images at the desired position with the desired orientation on the printing material.
• the definition of the offsets preferably takes place via non-printed registration marks, which are applied to the printing material, for example, when the substrate is cut. These registration marks are measured to determine the offsets. In the case in which positions of corners or edges or edges of the printing material can be measured metrologically with the same accuracy as the positions of registration marks, the corners or edges of the printing material can also be used as registration marks to determine the offsets ,
• the distance of the printed image from a leading edge and back edge of the printing material, in particular a printing sheet is defined.
• the distance of the print image of side edges of the substrate, in particular of the sheet is defined.
• the Schrägregisteroffset the angular position of the printed image on the substrate, in particular the printed sheet, set. With the help of the or each offset, therefore, the printed image is aligned relative to edges or edges of the printing material to be printed, in particular printed sheet.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Inking, Control Or Cleaning Of Printing Machines (AREA)

Applications Claiming Priority (1)

Publications (2)

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ID=39721979

Family Applications (1)

Country Status (2)

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Citations (1)

Family Cites Families (9)

• 2007
  • 2007-06-08 DE DE102007026647.4A patent/DE102007026647B4/de not_active Expired - Fee Related
• 2008
  • 2008-05-30 EP EP08157247A patent/EP2000302A3/fr not_active Withdrawn

Patent Citations (1)

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