Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
  • B41F—PRINTING MACHINES OR PRESSES
  • B41F19/00—Apparatus or machines for carrying out printing operations combined with other operations
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
  • B41F—PRINTING MACHINES OR PRESSES
  • B41F33/00—Indicating, counting, warning, control or safety devices
  • B41F33/0081—Devices for scanning register marks

Definitions

• the invention relates to a method and a device for the application of functional elements on printed sheets in a sheet-fed rotary printing press according to the preamble of claim 1.
• Functional elements are elements that give the printed product a functionality that goes beyond the purely visual impression. These can be, for example, RFID transponders, 1-bit transponders for goods protection, holograms, or labels printed on labels, which provide additional functionality in the merchandise management, in the interaction with the customer and mobile and web-based media world or in the field of trademark protection deliver.
• Labeling devices in sheet-fed rotary printing presses donate a label to the printed sheet, which is usually detached from a roll and fed. The label can also be supplied from a stack of stock as a single label on the substrate.
• the EP 0 452 700 B1 describes a method in which the registration differences at the print image locations of a multicolor offset print are detected by means of a color video camera, wherein the print image location comprises a contour which is produced by the overprint of at least two different printing inks and the determination of the registration differences from a determination of the offset of the contours individual color separations relative to each other.
• the often necessary registration corrections for correcting register deviations mean that, in the case of a rigidly mounted adhesive device, the affixed label no longer fits exactly to the printed image after register corrections have been carried out. This can lead to unsightly and disturbing pressure disturbances that once disturb the visual impression of the printed image and additionally possibly impair the functionality of the adhered element, for example by a partial overprinting.
• the object of the invention is to position a printed by means of a sticker label during the printing pass through the sheet-fed rotary printing press accurately to the printed image.
• the printing press has one or more dispensers which apply a label to the printed sheet during the printing run by the sheet-fed rotary printing press.
• the label can be detached, for example, from a carrier film, which is preferably unwound in roll form from an unwinding device, wherein the label is coated with a bonding agent, which ensures the adhesion to the printed sheet.
• the carrier film is rolled up again after the dispensing process of the label.
• the label can also be present as a single label and be donated from a pile stock on the sheet.
• the printed sheet may be provided with a bonding agent at the locations where the label is to adhere.
• the bonding agent can be applied via a spray device, a printing or coating unit or a further dispenser as tape on the sheet.
• the adhesive device is provided with a device which makes it possible to adjust the dispenser in the X direction over the sheet width exactly.
• the adjustment can be done by mechanical means.
• the adjusting means on a scale that allows the most accurate positioning possible. This can be done for example by the largest possible translation of a variable transmission.
• the adjustment can be motorized, with a linear drive or other actuators.
• the dispenser (feeder) can be provided with a possibility to adjust it diagonally. This can be done, for example, by mounting the dispenser (feeder) on a movable turntable. Again, the adjustment can be done both mechanically and by motor, which can be done via a linear actuator or other suitable actuators.
• a registration adjustment of the feed by the trigger signal for feeding the label is carried out offset in time analogous to the Passerversatz, so that the label comes back in the correct position on the sheet to the sheet and thus to adhere.
• the trigger signal for feeding the label can be made by a rotary encoder that is connected to the machine, or by a donor, the printed register mark are detected.
• dispenser (supply device) of the adhesive device in the pressure-encompassing direction moves radially or is mechanically adjusted in accordance with the register offset by means of a motor or with another suitable actuator.
• the positioning commands for the automatic positional adjustment to the sticking device take place when subsequent adjustment commands to the register setting device of a printing unit or finishing plant take place via a console display or via an automatic register system.
• These commands or manipulated variables derived from the setting commands are also forwarded correspondingly to the sticking device so that the supplied label and the printed image present on the printed sheet again match one another in the correct position.
• the exact location of the feed location of the label on the signature can also be determined by evaluating one or more printed register marks by one or more encoders that trigger a drive signal to the feeder.
• the control signal in this case contains position information of the trigger element / register element which serve for the correct positioning of the feed device, so that the label is positioned in the correct position relative to the printed image on the sheet.
• register marks can be used as a trigger element, which also serve for automatic register setting within or in connection with the printed image.
• printed register marks can also be used.
• the trigger element but can also be a be special register element, which serves to control the feeder. Preferably, such a trigger element or register element is covered by the label after sticking.
• the information for the positionally correct feeding of the label can also be obtained by the position of the label to the printed image, for example by the evaluation of contours of the printed image, is detected by image processing. From this, if necessary, appropriate corrective measures can be derived. In a simple case, this can be done by the position of the label being displayed on a screen by means of an image inspection system and the printer deriving therefrom setting information which it transmits to the sticking device via the control console of the machine or a separate control panel. The adjustment can also be made automatically by determining the deviation of the supplied label from the printed image from the image taken with the image inspection system by means of image-analytical methods, and from this control signals for positioning the label are derived.
• the correction can also be carried out by the operator visually determining the deviations of the label from its desired position in the printed image and the correction signals for adjusting the adhesive device via the machine control station or a separate control panel or control panel are entered.
• each individual sticking device can be sensibly selected on the input device and then the setting commands can be entered.

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• Labeling Devices (AREA)

Applications Claiming Priority (1)

Publications (1)

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ID=40092384

Family Applications (1)

Country Status (2)

Cited By (1)

Citations (6)

• 2007
  • 2007-07-04 DE DE200710031058 patent/DE102007031058A1/de not_active Withdrawn
• 2008
  • 2008-05-21 EP EP20080009318 patent/EP2025514A2/fr not_active Withdrawn

Patent Citations (6)

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