DE102018217132A1 - Method for preventing printing errors in water-based ink printing - Google Patents

Method for preventing printing errors in water-based ink printing Download PDF

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Publication number
DE102018217132A1
DE102018217132A1 DE102018217132.7A DE102018217132A DE102018217132A1 DE 102018217132 A1 DE102018217132 A1 DE 102018217132A1 DE 102018217132 A DE102018217132 A DE 102018217132A DE 102018217132 A1 DE102018217132 A1 DE 102018217132A1
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DE
Germany
Prior art keywords
printing
image
ink
test pattern
sheet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
DE102018217132.7A
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German (de)
Inventor
Peter Hachmann
Wolfgang Schönberger
Nikolaus Pfeiffer
Rolf Müller
Ralf Würdinger
Petra Svoboda
Sabine Röhl
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Heidelberger Druckmaschinen AG
Original Assignee
Heidelberger Druckmaschinen AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to DE102017219946 priority Critical
Priority to DE102017219946.6 priority
Application filed by Heidelberger Druckmaschinen AG filed Critical Heidelberger Druckmaschinen AG
Publication of DE102018217132A1 publication Critical patent/DE102018217132A1/en
Pending legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, e.g. INK-JET PRINTERS, THERMAL PRINTERS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J29/00Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
    • B41J29/26Devices, non-fluid media or methods for cancelling, correcting errors, underscoring or ruling
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, e.g. INK-JET PRINTERS, THERMAL PRINTERS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J11/00Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers, thermal printers, for supporting or handling copy material in sheet or web form
    • B41J11/008Controlling printhead for accurately positioning print image on printing material, e.g. with the intention to control the width of margins
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41MPRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00Duplicating or marking methods; Sheet materials for use therein

Abstract

A method according to the invention for preventing printing errors in water-based ink printing comprises the steps of: printing (a1, 7a) a first test pattern (16) with water-based ink (7a) during a first pass (a, 4) of a printing material sheet (2) Ink printing machine (1), wherein a test pressure (20) is generated; Detecting (a2, 8, 8a, 8 ') the first test pattern (16) during the first pass (a, 4), generating a first reference image (17); Store (b, 3, 5) the substrate sheet (2) with the test print (20) until acclimatization; Detecting (d1, 8, 8a, 8 ') of the first test pattern (16) during a second pass (d, 4, 6) of the printing material sheet (2) by the ink printing machine (1), generating a second reference image (19); and computerized computing (e, 12) a print image compensation (14) based on a comparison of the first and second reference images (17, 19). The invention makes it possible in an advantageous manner to counteract a disturbing shrinkage of the printing material.

Description

  • invention
  • The invention relates to a method having the features of the preamble of claim 1.
  • Technical field of the invention
  • The invention is in the technical field of the graphics industry and especially in the field of industrial inkjet printing (inkjet) on flat substrates, i. the application and drying of liquid ink on sheet or web-shaped substrates, preferably of paper, cardboard or cardboard.
  • State of the art
  • The application of liquid ink is carried out in the known DOD inkjet printing method (drop-on-demand) by a print image is produced on a flat substrate, with an ink print head (short: head) with individually controllable nozzles to the image to be printed according to finest ink droplets preferred in the picoliter range, generates and transmits these non-contact as pressure points on the substrate. The control of the nozzles can be done by means of piezo actuators.
  • In the case of the so-called water-based ink printing, the liquid ink contains a proportion of water for receiving the colorant, in particular a pigment. The colorant is transferred to the substrate by means of a drop produced by the inkjet print head. The water which is likewise transferred is then removed again from the printing substrate, preferably by thermal drying, e.g. by irradiation with infrared radiation.
  • Due to the printing process-related entry of water into the substrate, especially in paper, cardboard or cardboard, or by otherwise in the substrate moisture, for example. If there is a slight increase in humidity, there may be a noticeable (surface) expansion of the substrate. In the subsequent drying of the printing material, e.g. During active drying by means of infrared radiation and / or during passive drying by storage, it can also lead to a noticeable (surface) shrinkage of the substrate. Both changes, individually or together, can lead to problems in the production and further processing of printed products, since the geometry of the print no longer matches the desired geometry.
  • In the prior art, therefore, the problem may arise that in particular a shrinkage of the printing substrate (substrate) interferes with the printing and / or further processing process and reduces the quality of the printed product produced. The re-expansion can also be disturbing. In addition, these disturbances are not linear, i. they do not lead to linear geometry changes.
  • The DE19724066B4 discloses a method for correcting geometry errors in the transfer of information to a substrate. The errors are caused by expansion of the substrate due to moisture introduced. For example, keystone distortion can be determined by measuring marks for reference prints. The correction is, however, in the imaging of films, printing plates and printing cylinders, so it is not suitable for ink printing.
  • The DE10110640A1 also discloses a method for image correction of printing forms and thus is also not suitable for ink printing. In this case, a precalculation of the corrected data takes place, which also includes a measurement of the distortion in the printed image, for example by means of verniers or normalization elements.
  • The DE102014013370A1 discloses a method for compensating local registration inaccuracies in inkjet printing on webs, wherein the ink is dried with UV radiation. It is a model-based process.
  • task
  • It is therefore an object of the invention to provide an improvement over the prior art, which in particular makes it possible to counteract disturbing shrinkage of the printing material in the production and optionally further processing of printed products with easily implementable measures, in particular with existing means.
  • Inventive solution
  • This object is achieved by a method according to claim 1.
  • Advantageous and therefore preferred developments of the invention will become apparent from the dependent claims and from the description and the drawings.
  • In the claims, the description and the drawings used letter-number combinations ( a to e4 ) for method steps preferably indicate the order of the method steps, although not all method steps have to be performed.
  • Substrate according to the invention may include: paper, cardboard, cardboard (also corrugated) or textiles, each as a sheet. When printing on three-dimensional bodies, such as balls or cylinders, the substrate may also have a curved surface.
  • A method according to the invention for preventing printing errors in water-based ink printing comprises the following steps:
    • - To press a1 a first test pattern with water-based ink during a first pass a a printing sheet by an ink printing machine, wherein a test pressure is generated;
    • - To capture a2 of the first test pattern during the first pass a wherein a first reference image is generated;
    • - To store b the substrate sheet with the test pressure until acclimatization;
    • - To capture d1 of the first test pattern during a second pass d the printing material sheet by the ink printing machine, wherein a second reference image is generated; and
    • - Computer-aided calculation e a print image compensation or a compensated print image based on a comparison of the first and the second reference image.
  • The invention makes it possible in an advantageous manner, a disturbing shrinking and preferably also a disturbing - as not purely compensating running - re-expansion of the substrate in the production and optionally further processing of printed products with easily implemented measures, especially with existing means (eg inkjet print heads, camera, computer) , to meet. It is particularly advantageous if an already existing in the machine camera for the invention can be used in additional function. The computer used for the invention may preferably be an already existing computer of the machine control.
  • Essential to the invention and so far unknown in the prior art is the (temporal) storage of the sheet before the second pass, i. a storage of the sheet for a certain, preferably fixed period of time. In this regard, it was worked out in extensive investigations with a variety of different substrates that there are various substrates that end not after a short time, but only after a few hours the process of not negligible, geometric distortion (shrinking, stretching). By the inventive storage of the sheet before the second pass can be ensured in an advantageous manner that the sheet is detected in the second pass in a completed geometric distortion.
  • Alternatively, the invention may be practiced with multiple test sheets, i. The inventive method can be repeated several times, each with a new sheet for the first pass. As a result, a higher accuracy can be achieved. The invention can be carried out iteratively.
  • Alternatively, the invention can also be applied in wet offset printing, in which moisture passes through the dampening solution and / or the fountain solution-ink emulsion in the printing substrate.
  • A preferred development of the invention may be distinguished by the following step: painting a4 of the substrate sheet with a second test pattern.
  • A preferred development of the invention may be characterized by the following step: storage b the printing material sheet with the test pressure outside of the ink printing machine until acclimation to room conditions, in particular to ambient temperature and / or ambient humidity.
  • A preferred development of the invention may be characterized by the following step: storage b of the printing material with the test pressure for a time t, where t> 1h or t> 3h or t> 24h.
  • A preferred embodiment of the invention may be characterized by the following step: drying a3 of the printing material sheet, in particular thermal drying or IR drying.
  • A preferred embodiment of the invention may be characterized by the following step: re-applying c of the printing material sheet for the second pass, in particular in the same orientation as in the first pass.
  • A preferred embodiment of the invention may be characterized by the following step: In the case of painting a4 of the substrate sheet with a second test pattern: Capture d2 of the second test pattern during the second pass a , wherein the second reference image is generated.
  • A preferred embodiment of the invention may be characterized by the following step: In the case of painting a4 of the substrate sheet with a second test pattern: Computer-aided comparison e11 the second test pattern in the second reference picture with the first test pattern in the second reference picture; Computer-aided computing e12 of differences between the first and the second test pattern; To adjust e13 a lacquer image to be printed 13 ' to an ink image to be printed based on the calculated differences.
  • A preferred embodiment of the invention may be characterized by the following step: Computer-aided comparison e21 the first test pattern in the second reference picture with the first test pattern in the first reference picture; Computer-aided computing e22 differences between the first and second test patterns; To adjust e23 an ink image to be printed, and optionally a lacquer image to be printed, to a punching image to be punched on the basis of the calculated differences.
  • A preferred development of the invention can be characterized by the following step: printing f at least one print job using at least the matched ink image and in the case of painting a4 also using at least the adapted lacquer image.
  • The features of the invention, the developments of the invention and the embodiments of the invention are also in any combination with each other advantageous developments of the invention. Further developments of the invention may also - in the above section "Technical Field of the invention" disclosed - have individual features or feature combinations.
  • Embodiments of the invention
  • The invention and its preferred developments are described below with reference to the drawings with reference to a preferred embodiment. Corresponding features are provided in the figures with the same reference numerals.
  • The drawings show:
    • 1 An inventive method or a machine according to the invention in the implementation of the method.
  • 1 shows a preferred embodiment of a method according to the invention or a machine according to the invention in the implementation of the method.
  • The ink printing machine 1 for printing the sheet according to the invention 2 preferably includes the following:
  • warehouse 3 for the bow 2 : A single sheet can be stored in the warehouse or several sheets side by side or as a stack. The bearing can be a tray table or a pallet. The warehouse 3 can be part of the machine 1 be or be provided separately to this.
  • transport path 4 by the printing machine: the path may comprise (as a transport system) a sequence of cylinders, a belt, a gripper chain or a succession of trays.
  • transport path 5 to the camp: The bow 2 can hand to the warehouse 2 be transported. Alternatively, a transport system (see path 4 ) be provided.
  • transport path 6 to the printing press: The bow 2 Can hand to machine 1 be transported. Alternatively, a transport system (see path 4 ) be provided.
  • Ink print head 7 / Inkjet print heads 7 : For side-to-side printing, multiple heads can be side by side and across the direction of the transport path 4 be arranged. For multi-color printing, multiple heads may follow each other in the direction of the transport path 4 be arranged. The heads 7 generate a (digital) print image 13 according to a variety of drops of water-based ink 7a and print a picture this way 7b on the bow 2 , A first test pattern can be made with the head or the heads 16 (water-based ink) on the sheet 2 be applied
  • camera 8th : That with the heads 7 generated picture 7b , in particular the first test pattern 16 , is from a camera 8th in their detection area 8a at least partially detected and as a (digital) first reference image 17 to a computer 12 directed. In addition, the camera can also be a second reference image 19 (see below) and to the computer 12 directed. The camera 8th can also be a camera group and eg two, three or four cameras across the direction of the transport path 4 include.
  • Optional alternative camera position 8th' : The camera 8th can also be at the position 8th' be arranged. Alternatively, at the position 8th' a second camera 8th be arranged.
  • IR dryer 9 : The water-based ink 7a on the bow 2 is by means of an IR dryer 9 or by its radiation 9a at least partially dried. In this case, water is removed from the ink and / or from the sheet by evaporation. The water vapor is dissipated eg sucked off.
  • Optional coating unit 10 : The picture 7b can with preferably transparent paint 10a a coating unit 10 at least partially covered and thus protected or refined. If it is a digital coating unit, for example, printheads, the paint is according to a (digital) lacquer image 13 ' applied. If it is a conventional coating unit, for example, a coating plate, preferably a flexo plate is provided. The Paint plate can according to the (digital) paint image 13 ' be generated, for example, as a correspondingly exposed flexo plate. With the coating plant 10 Can a second test pattern (made of paint) on the sheet 2 and / or on the picture 7b and / or on the first test pattern 16 be applied.
  • Optional punching unit 11 : The printed bow 2 can by means of at least one punching knife 11a of the stamping plant 11 be punched. The punching unit may preferably be a rotary punch or a flat bed punch. Through the dashed line 11 ' it is indicated that the punching also separate to the machine 1 can be provided. The stamping picture 13 " can be digital in the case of a digital punch, eg a laser punch. However, it is preferably a conventional punch with punching knife (s), ie the punching image is realized in the position and shape of the punching knife.
  • calculator 12 : This can be part of the machine 1 be or be provided separately to this. It stands for data transmission via connections 15 , eg data lines, with the various components of the machine 1 in connection. He can in particular a compensated, ie printing error-avoiding printed image 14 calculate, save and print f provide.
  • The method according to the invention will be described below with reference to the (partly optional) method steps a to e23 described with reference to the above with reference to 1 described (also partly optional) components of the machine 1 can be carried out:
    • a) First pass of the bow 2 through the inkjet printing machine 1 on the transport path 4 ,
    • a1) Print the first test pattern 16 with ink (ink test pattern) on the sheet 2 , The test pattern may have multiple test marks, eg, nine test marks, four in the corners of the sheet, four in the middle in between at the sides of the sheet, and one in the middle of the sheet. The test marks can be designed as test crosses. Instead of the test crosses, fixed image sections can also be used as marks. The test marks may preferably be well detectable black marks on a yellow solid surface ("full area" conditionally high water input, ie clearly visible effect).
    • a2) detecting the first test pattern 16 with the camera 8th , This will be the first reference image 16 taken and to the computer 12 transmitted.
    • a3) Optional drying, in particular thermal drying, the - the first test pattern 16 forming - ink 7a on the bow 2 , This drying can cause a disruptive and therefore undesirable shrinkage of the sheet 2 to lead. If the sheet is held at its leading edge during transport, then a trapezoidal distortion may occur in which the sheet trailing edge shrinks more than the sheet leading edge.
    • a4) Optional varnishing of the bow 2 or at least a portion of the arc, wherein the second test pattern 18 (Paint test pattern) is generated on the sheet.
  • On the first pass a the bow is not punched. Punching, if provided, takes place only under production conditions, ie after the first and second passes a and d ,
    • b) storing or storing the bow 2 in the (bow) camp 3 , The storage period is preferably chosen so that the sheet acclimatized, ie until acclimatization to room conditions (temperature and humidity of the surrounding air). The storage period may preferably be greater than one hour, greater than three hours or greater than 24 hours. Storing the sheet results in (re) stretching the previously shrunken sheet. The bow may remain trapezoidally distorted, albeit to a lesser extent. The step of storing the bow 2 is essential to the invention.
    • c) reapply the bow 2 for the second run d , This is the bow or the test pattern 16 (and in the case of painting also the second test pattern 18 ) in the same orientation as in the first pass a created, in particular not rotated by 180 °.
    • d) second pass of the sheet 2 through the ink printing machine 1 on the transport path 4 ,
    • d1) detecting the previously shrunken and as a result of storage b again at least partially extended first test pattern 16 with the camera 8th , This will be the second reference image 16 taken and to the computer 12 transmitted.
    • d2) In the case of painting: also detecting the result of storage b extended second test pattern 18 with the camera 8th , In this case, the second reference picture concerns 16 then also the second test pattern. Because the painting d2 after drying a3 is the second test image 18 not or only marginally shrunk before expansion.
    • e) calculating a compensation of the printed image 13 :
    • e1) In the case of painting:
    • e11) Computer-aided comparison of the second test pattern 18 in the second reference picture 19 with the first test pattern 16 in the second reference picture.
    • e12) computer-aided computing of differences between the first and second test patterns 16 and 18 , For this purpose, preference can be given to changes in the distance of the test marks between the two test patterns. From the differences, computer-assisted distortion factors can be obtained for the subsequent adaptation e13. The distortion factors can be stored on the computer side and retrieved in future print jobs with the same substrate.
    • e13) Preferably computer-aided adaptation of a lacquer image to be printed 13 ' to the ink image to be printed 13 based on the calculated differences. If the lacquer image is generated digitally, the corresponding print head is controlled with the adapted lacquer image. If, on the other hand, a conventional paint plate is used, then the adapted paint image can be used 13 ' used for the production or exposure of the (adapted) paint plate.
    • e21) Computer-aided comparison of the first test pattern 16 in the second reference picture 19 with the first test pattern in the first reference picture 17 , It may be necessary to consider the so-called investment registration, ie to align the two reference images to each other, especially in the direction transverse to the direction of the sheet transport. The alignment can be done using the center test mark on the leading edge of the sheet.
    • e22) computer-aided computing of differences between the first and second test patterns 16 and 18 , For this purpose, preference can be given to changes in the distance of the test marks between the two test patterns. From the differences, computer-aided distortion factors can be obtained for the subsequent adaptation e23. The distortion factors can be stored on the computer side and retrieved in future print jobs with the same substrate. In addition to the dependence on the printing material (material, running direction), dependencies on the printing job-specific dryer temperature and / or printing speed can exist. Therefore, a large number of distortion factors can be stored for a large number of print jobs, for example in a database.
    • e23) Preferably computer-aided adaptation of an ink image to be printed 13 , and optionally a lacquer image to be printed 13 ' , to a (serving as another reference) punching image 13 " based on the calculated differences. The adaptation, in particular of the ink image, can take place in a compensated printed image 14 for the upcoming print job. The stamping picture 13 " is an immutable or a constant image, since it is not subject to any significant and moisture-related changes such as shrinking or stretching. The stamping picture 13 " may actually comprise a stamping pattern, eg the position and shape or size of the stamping on the sheet 2 with which a stamping 11 is controlled. Alternatively, the stamped image 13 " also be a mere (digital) utility image, with no punching 11 is controlled, ie which serves only as another reference image. The adaptation can be done, for example, as an inverse trapezoidal distortion. In the case of painting, the paint appearance 13 " adjusted twice: once to the ink image 13 and once again to the stamping picture 13 " ,
    • f) Print: Finally, the print job (ink or ink plus paint only) is performed on the corrected or warp-adjusted image data (for ink and, if necessary, paint).
  • LIST OF REFERENCE NUMBERS
  • 1
    Ink printing press
    2
    Sheet of substrate
    3
    Warehouse for the bow
    4
    Transport path through printing press
    5
    Transport path to the warehouse
    6
    Transport path to the printing press
    7
    Inkjet Print Head / Inkjet Print Heads
    7a
    ink
    7b
    printed picture
    8th
    camera
    8a
    detection range
    8th'
    alternative camera position
    9
    IR dryer
    9a
    radiation
    10
    coating unit
    10a
    paint
    11
    punching
    11a
    punching knife
    11 '
    separate punch
    12
    calculator
    13
    Printed image, ink image
    13 '
    Lack picture
    13 "
    punching image
    14
    compensated print image
    15
    links
    16
    first test pattern
    17
    first reference picture
    18
    second test pattern
    19
    second reference picture
    20
    test pressure
    a
    Process step First pass
    a1
    Process step Print
    a2
    Process step Capture
    a3
    Process step drying
    a4
    Process step varnishing
    b
    Process step storage
    c
    Process step Re-creation
    d
    Process step second pass
    d1
    Method step Detecting the first test pattern
    d2
    Process step detecting the second test pattern
    e
    Process step Computer-aided calculation
    e11
    Method step Computer-aided comparison
    e12
    Process step Computer-aided calculation
    e13
    Process step Customize
    e21
    Method step Computer-aided comparison
    e22
    Process step Computer-aided calculation
    e23
    Process step Customize
    f
    Process step Print
  • QUOTES INCLUDE IN THE DESCRIPTION
  • This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
  • Cited patent literature
    • DE 19724066 B4 [0007]
    • DE 10110640 A1 [0008]
    • DE 102014013370 A1 [0009]

Claims (10)

  1. A method of preventing printing errors in water-based ink printing, comprising the steps of: - Printing (a1,7, 7a) of a first test pattern (16) with water-based ink (7a) during a first pass (a, 4) of a printing material sheet (2) by an ink printing machine (1), wherein a test pressure (20) is generated ; - detecting (a2, 8, 8a, 8 ') of the first test pattern (16) during the first pass (a, 4), wherein a first reference image (17) is generated; - storing (b, 3, 5) of the printing material sheet (2) with the test pressure (20) until acclimatization; - Detecting (d1, 8, 8a, 8 ') of the first test pattern (16) during a second pass (d, 4, 6) of the printing material (2) by the ink printing machine (1), wherein a second reference image (19) is generated ; and - Computer-assisted computing (e, 12) of a print image compensation (14) based on a comparison of the first and the second reference image (17, 19).
  2. Method according to Claim 1 , characterized by coating (a4, 10, 10a) of the printing material sheet (2) with a second test pattern (18).
  3. Method according to Claim 1 or 2 , characterized by storing (b, 3, 5) of the printing material sheet (2) with the test print (20) outside the ink printing machine (1) until acclimation to room conditions, in particular to ambient temperature and / or ambient humidity.
  4. Method according to Claim 3 , characterized by storing (b, 3, 5) of the printing material sheet (2) with the test pressure (20) for a time t, wherein t> 1h or t> 3h or t> 24h.
  5. Method according to one of the preceding claims, characterized by drying (a3, 9, 9a) of the printing material sheet (2), in particular thermal drying or IR drying.
  6. Method according to one of the preceding claims, characterized by re- applying (c, 6) of the printing material sheet (2) for the second pass (d, 4), in particular in the same orientation as in the first pass (a, 4).
  7. Method according to one of the preceding Claims 2 to 6 Characterized by in the case of doping (a4, 10) of the printing material (2) with a second test pattern (18): detecting (d2, 8, 8a, 8 ') of the second test pattern (18) during the second pass (d, 4 ), wherein the second reference image (19) is generated.
  8. Method according to Claim 7 Characterized by in the case of doping (a4, 10) of the printing material (2) with a second test pattern (18): A computer based comparing (E11, 12) of the second test pattern (18) in the second reference image (19) with the first test pattern (16 ) in the second reference image (19); Computer aided computing (e12, 12) of differences between the first and second test patterns (16, 18); Adjusting (e13, 12) a lacquer image (13 ') to be printed to an ink image (13) to be printed on the basis of the calculated differences.
  9. Method according to one of the preceding claims, characterized by computer-aided comparison (e21, 12) of the first test pattern (16) in the second reference picture (19) with the first test pattern (16) in the first reference picture (17); Computer-aided computing (e22, 12) differences between the first and second test patterns (16, 18); Adjusting (e23, 12) an ink image (13) to be printed, and optionally a lacquer image (13 ') to be printed, to a punched image (13 ") based on the calculated differences.
  10. Method according to one of the preceding claims, characterized by printing (f) at least one print job using at least the adapted ink image (13) and in the case of painting (a4) also using at least the adapted lacquer image (13 ').
DE102018217132.7A 2017-11-09 2018-10-08 Method for preventing printing errors in water-based ink printing Pending DE102018217132A1 (en)

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DE10110640A1 (en) 2000-04-06 2001-10-11 Heidelberger Druckmasch Ag Correction of the print form in a rotary printing process is based upon range of external factors
DE19724066B4 (en) 1997-06-07 2007-04-19 Man Roland Druckmaschinen Ag Method for correcting geometry errors when transferring information to a substrate
DE102014013370A1 (en) 2014-09-09 2016-03-10 Heidelberger Druckmaschinen Ag Method for compensating local registration inaccuracies

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Publication number Priority date Publication date Assignee Title
DE19724066B4 (en) 1997-06-07 2007-04-19 Man Roland Druckmaschinen Ag Method for correcting geometry errors when transferring information to a substrate
DE10110640A1 (en) 2000-04-06 2001-10-11 Heidelberger Druckmasch Ag Correction of the print form in a rotary printing process is based upon range of external factors
DE102014013370A1 (en) 2014-09-09 2016-03-10 Heidelberger Druckmaschinen Ag Method for compensating local registration inaccuracies

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