EP1666252B1 - Dispositif et procédé de réglage de l'image d'impression dans une machine d'impression flexographique - Google Patents

Dispositif et procédé de réglage de l'image d'impression dans une machine d'impression flexographique Download PDF

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Publication number
EP1666252B1
EP1666252B1 EP05022128A EP05022128A EP1666252B1 EP 1666252 B1 EP1666252 B1 EP 1666252B1 EP 05022128 A EP05022128 A EP 05022128A EP 05022128 A EP05022128 A EP 05022128A EP 1666252 B1 EP1666252 B1 EP 1666252B1
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EP
European Patent Office
Prior art keywords
printing
rolls
involved
intensity
values
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.)
Expired - Lifetime
Application number
EP05022128A
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German (de)
English (en)
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EP1666252A3 (fr
EP1666252A2 (fr
Inventor
Martin Krümpelmann
Dietmar Pötter
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Windmoeller and Hoelscher KG
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Windmoeller and Hoelscher KG
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Application filed by Windmoeller and Hoelscher KG filed Critical Windmoeller and Hoelscher KG
Publication of EP1666252A2 publication Critical patent/EP1666252A2/fr
Publication of EP1666252A3 publication Critical patent/EP1666252A3/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F5/00—Rotary letterpress machines
    • B41F5/24—Rotary letterpress machines for flexographic printing
    • 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
    • B41F13/20—Supports for bearings or supports for forme, offset, or impression cylinders
    • 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
    • B41F13/24—Cylinder-tripping devices; Cylinder-impression adjustments
    • B41F13/26—Arrangement of cylinder bearings
    • B41F13/30—Bearings mounted on sliding supports
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F33/00—Indicating, counting, warning, control or safety devices
    • B41F33/0036—Devices for scanning or checking the printed matter for quality control
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F33/00—Indicating, counting, warning, control or safety devices
    • B41F33/0036—Devices for scanning or checking the printed matter for quality control
    • B41F33/0045—Devices for scanning or checking the printed matter for quality control for automatically regulating the ink supply
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2200/00—Printing processes
    • B41P2200/10—Relief printing
    • B41P2200/12—Flexographic printing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2200/00—Printing processes
    • B41P2200/30—Heliography
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2213/00—Arrangements for actuating or driving printing presses; Auxiliary devices or processes
    • B41P2213/70—Driving devices associated with particular installations or situations
    • B41P2213/73—Driving devices for multicolour presses
    • B41P2213/734—Driving devices for multicolour presses each printing unit being driven by its own electric motor, i.e. electric shaft
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S101/00—Printing
    • Y10S101/45—Sensor for ink or dampening fluid thickness or density

Definitions

  • the invention relates to a device and a method according to the preamble of claims 1 and 13.
  • flexographic printing machines which are equipped with a pressure roller and an anilox roller, which are movable on at least one console of the printing press frame. These two rollers can be employed by their own actuators both independently of each other and together to the impression cylinder on which the printing material is applied.
  • the adjustment of the printed image in a known manner can be done as follows.
  • An electronic control device is provided which can access data entered into a memory device.
  • the data relate to the travel between the pressure roller and the counterpressure roller, taking into account the geometrical dimensions of the machine and the diameter of the rollers.
  • This control device sets the relative roller positions, so that it should be ensured that all parts of the printed image are transmitted.
  • This loading operation is performed by the print engine operator, who adjusts the roll positions while observing the print image.
  • This type of adjustment of the printed image ensures that a very good printed image is obtained against each other with the least amount of pressure applied to the rollers involved in the printing process.
  • this type of adjustment of the printed image is cumbersome, requires a lot of time and waste and is also disadvantageous in that it depends on the subjective assessment of the printing press operator by visual inspection From the DE 2 060 000 A1
  • the object of the invention is therefore to provide a device or a method of the type described, which allows automatic adjustment of the print image to the desired optimum quality.
  • this object is achieved in a device or a method of the type specified in that at least one of the print image on the printing substrate detecting camera is provided, the successively recorded intensity values of light, which is reflected at least from image portions of the printed image, an electronic control device supplies.
  • This control device generates as long as signals for the actuators at least part of the rollers involved in the printing and inking process, until or as the recorded intensity values have a certain course or have exhibited.
  • This control device thus evaluates the intensity values in such a way that these intensity values are checked, and determines from the recorded intensity values the optimum roll positions and thus controls the positioning motors automatically.
  • One goal may be to image the printed image without loss of area on the substrate.
  • the course of the intensity values are evaluated. Until or how the change of the intensity values has a certain course, which represents an optimal pressure. Then the Anstellvorgang can be terminated or at least interrupted.
  • the intensity values of the light of selected spectral ranges, ie wavelengths can be recorded.
  • the addition process is terminated when or as long as the best match between the measurement and the target image exists.
  • control program to which the geometrical dimensions of the rollers involved in the printing and inking process are known and which optionally (for example in the case of long travel ranges, or after a roll change) provisionally adjusts the position of these rollers by signals to the actuators.
  • the digitized desired shape of the printed image is stored in the memory unit.
  • This desired shape is then (possibly in the control device) compared with the respective recorded print image.
  • the control device then generates actuating signals for the actuators moving the rollers until the comparison yields the best match between the recorded print image and its stored desired shape.
  • Another embodiment of the invention does not require a stored in a memory digitized desired form.
  • use is made of the fact that the intensity of the reflected light of different sections of the printed image as a function of the relative roller position has a characteristic course.
  • the intensity of the reflected light does not change unless contact is made between all the rollers involved in the printing or inking process.
  • the contact is made, the ink transfer to the substrate begins and the intensity of the reflected light changes relatively strongly until an optimum color transfer value is achieved.
  • a further approximation of the rollers then leads only to a smaller change in the intensity of the reflected light.
  • An improvement of this embodiment can be achieved if there is a difference between the intensity values of the printed substrate and the intensity values of the unprinted substrate.
  • the difference values obtained are referred to below as contrast values. They can be used in a similar way as the intensity values.
  • the use of at least one color camera is recommended, so that light of selected wavelength ranges can be recorded.
  • This measure is suitable both to facilitate the comparison with a stored digitized desired shape of the printed image and to perform the course of the light intensity or the contrast values in an improved form.
  • Commercially available cameras of modern design usually have as photosensitive elements semiconductor devices that are sensitive to light of certain wavelengths, which is due to the photoelectric effect and its applications in the semiconductor field. It is expedient for a camera in this way to be able to assign electrical output values to color intensity values of several colors (eg red, yellow, blue). These values are then made accessible to a control and control unit.
  • the color intensity profile of different colors or even the entire spectrum of a printed image or even the sections of a printed image can be recorded.
  • the measured values are then used in the manner already described in order to set the suitable position of the pressure rollers. Also for the individual colors can be done in the manner already described a contrast formation.
  • Light intensity values can also be converted into coordinate systems suitable for further evaluation. The same goes for the course Contrast values.
  • These values derived in the last analysis from intensity values and color values (wavelength / frequency) also have a characteristic course as a function of the relative position of the rollers and can be used in the manner already described.
  • a digital camera is expediently used, which supplies digitized images of the recorded print images.
  • the setting can be made separately for each printing unit.
  • a separate adjustment of the actuators for producing the parallelism of the various rollers may be provided if, due to an inclination of a roller over the length thereof different pressures result.
  • flexographic printing would z. B. a separate adjustability of the actuators one side of the inking unit or the inking provide v. a. to ensure the parallelism of pressure and impression cylinder.
  • a measuring operation in the sense of this application is the observation of the course of the intensity or contrast values, while the rollers involved in the printing process are adjusted to one another. If only one camera is used, it is possible to sequentially set several inking units of a machine, that is to perform a measuring operation during the setting of an inking unit.
  • the values can be stored in a memory.
  • At least one suppression takes place between at least two rollers during the addition process of the rollers involved in the printing process.
  • a counter-pressure roller 3 provided with a drive is mounted in the usual way.
  • the side parts 1, 2 carry a printing unit console 4, on the guides in not shown, the bearing blocks 5 and 6 of a pressure roller 7 and an anilox roller 8 slidably guided in the direction of the double arrows A and B.
  • the mutually arranged bearing blocks 5, 6 are movable by individually controllable servo motors M1 to M4, in such a way that each roller 7, 8 can be moved by itself and both in a fixed position to each other are moved together.
  • the printing machine frame 1, 2 is provided with further Farbwerkskunsolen not shown, on which in a corresponding manner printing and anilox rollers 8 are moved, with only the single impression roller 3 is provided for all printing cylinder.
  • the flexographic printing machine according to the invention can in principle be designed in the same way as in the case of its mechanical construction DE 29 41 521 A 1 .
  • the anilox roller 8 is provided with a conventional inking device, which preferably consists of a known ink chamber doctor blade.
  • the pressure roller 7 is provided with printing on the web 17 clichés 9. In this case, a diamond pattern, which is easy in the figure is to be represented, imprinted.
  • the running on the platen 3 in the direction of arrows C and D paper web 17 is printed with a printed image 10, which is shown for the sake of simplicity in the form of squares.
  • This print image 10 is recorded in the detection area 11 by the camera K, which feeds successively recorded images via the line 12 to the computer-equipped control unit 13.
  • data are entered via a special input device 14, which relate to the diameter of the pressure roller 7 and the thickness of the worn therefrom 9 clichés.
  • the desired shape of the printed image 10 to be printed is entered into the control and regulation unit 13.
  • the control and regulation unit 13 for example, in one embodiment, the printed images taken by the camera K are compared with the desired form of the printed image entered via the input unit 15, and the control and regulating unit 13 sends signals to an adjusting device 16 via lines according to the signals generated by the control unit 13, the servo motors M1 to M4 of the printing and anilox roller 7, 8 controls.
  • the settings are stored in a memory of the control unit, so that, if necessary, the optimal position of the printing and anilox rollers 7, 8 can be found again ,
  • FIG. 2 illustrated embodiments is shown in which way or order the three rollers involved a flexographic printing machine can be employed against each other.
  • a representation of the relative roll position setting is not necessary because only two rolls are involved in gravure printing in the printing process.
  • FIG. 2 is constructed in matrix form.
  • the columns denoted by the capital letters A to C contain exemplary embodiments, while the lines denoted by the small letters a to e designate method steps of the individual exemplary embodiments.
  • the printing material that runs during the printing process between the pressure 7 and counter-pressure roller 6 and which in FIG. 1 the reference numeral 17 is assigned is in FIG. 2 not shown.
  • the individual movement of a roller 7, 8 is represented by an arrow within a roller, while an arrow passing through both rollers indicates the mutual movement of the roller packet without a change in the relative position of the rollers relative to one another.
  • the term "overpress" is used.
  • overpressing is meant a pitching or pressing of the rollers which goes beyond the exact geometrical dimensions thereof.
  • the “distance” by which it must be “overdriven” or the pressure that is necessary for this varies from printing process to printing process from millimeter fractions to millimeters. It is clear that in most printing processes flexible rollers, substrates or other flexible additional elements are used, which increase this distance. In this context, the clichés of flexographic printing or gravure impression are mentioned as examples.
  • cylinders made of steel can usually be overpowered by simple means, which goes beyond the ovality of their mantle surface. This is the case in particular if the cylinders have rubberized lateral surfaces. Therefore, the mentioned overpressing can be used in various printing processes.
  • a of the FIG. 2 is the line a - as in the other embodiments also - the initial state in which the three rollers involved 3, 7, 8 are not yet employed against each other.
  • step A b the pressure roller 7 is set against the counter-pressure roller 6 and over-pressed in the manner already described above.
  • the individual movement of the pressure roller 7 is represented by the arrow. This ensures that all zones of the plate (when colored) transfer color to the substrate.
  • step A b there is still no contact and thus no ink transfer to the pressure roller 7 and the substrate.
  • step c of the embodiment A is in approaching the anilox roller 8 to the platen 7 until all pixels on the substrate can be seen. This circumstance is verified in the manner already described with the help of at least one camera. Since a permanent suppression of the in step b to each other set rollers 3 and 7 is undesirable, now carried out the process steps A d and A e.
  • the process step A d shows how the two rollers 7 and 8 are moved away from the counter-pressure roller, wherein the set relative position between the anilox roller 8 and the pressure roller 7 is maintained.
  • the two rollers are moved back to the counter-pressure roller until all pixels are again present on the substrate, which is verified again with the help of the camera. The process is completed, the print image optimized and the actual production process can begin.
  • the line a is the initial state, in which the three rollers involved, 7, 8 are not yet employed against each other.
  • the anilox roller 8 is made against the pressure roller 7 and suppressed in the manner already described above. This ensures that all zones of the cliché are completely colored.
  • the next step c of the embodiment B is in approaching the package of anilox roller 8 and pressure roller 7 to the platen roller 3 to all pixels on the substrate can be seen.
  • step B d shows how the roller 8 is moved away from the pressure roller 7, whereby the set relative position between the pressure roller 7 and the counter-pressure roller 3 is maintained.
  • step B e the two rollers are again brought together until again all pixels are present on the substrate, which is verified again with the help of the camera. The process is completed, the print image optimized and the actual production process can begin.
  • the pressure roller 7 and the anilox roller 8 are made common to the counter-pressure roller 3 wherein all three rollers involved 3, 7, 8 are suppressed from each other.
  • the pair of rollers consisting of printing roller 7 and anilox roller 8 are then driven together by the counterpressure roller, whereby the suppression between the rollers of the roller pair remains.
  • the roller pair is adjusted to the counterpressure roller until all image elements are transferred to the printing material.
  • the anilox roller 8 is moved away from the pressure roller, there is at least no complete color transfer instead. The retraction of the anilox roller 8 to the pressure roller 7 shown in the method step C1 f takes place again until the printed image is imaged without loss of area.
  • the embodiment according to Fig. 2 C 2 differs in the steps c to e of the embodiment Fig. 2 C 1 in that, in step c, the anilox roller 8 is moved away from the press roller engaged in the overpressure position to the counterpressure roller 7 from its overpressed position relative to the pressure roller in the direction of the arrow. Subsequently, the anilox roller 8 in step d in their optimal employment of the pressure roller brought and in steps e and f, the common departure of pressure roller and anilox roll from the platen roller and the hiring done by the control unit in a form to the platen, which ensures that the printed image is imaged without loss of area.
  • FIG. 3 schematically illustrates how the printed image 10, which is contained in the rectangle 20, can be decomposed into different sections 18.
  • FIG. 4 shows the contrast curve k i of the sections 18a and 18b, which is plotted as a function of the position of the rollers relative to each other x.
  • the resulting characteristics 19 a and 19 b are assigned to the sections 18 a and 18 b. It immediately becomes clear that both characteristics are largely the same shape. However, the fact that both characteristics have almost identical maxima is due to the fact that the contrast values were normalized in this embodiment.
  • Such standardization may be performed, for example, with respect to average values of multiple sections 18.
  • the course of the two characteristic curves is offset relative to the roll position, since the rolls involved in the printing process, clichés, etc., as already mentioned several tolerances, which in this case cause the portion 18 a "earlier" is completely printed, as the portion 18 b ,
  • the portion 18a is already completely printed when the area 21a of the characteristic 19a is reached.
  • Both sections 19 a, b are printed when the portion 21 b of the curve 19 b is reached.
  • the setting operation of the printing rollers can be terminated.
  • the fact that the regions 21 of the characteristic curves 19 lie behind the second inflection point of the characteristic curves 19 in the exemplary embodiment shown does not mean that this always has to be the case. Rather, the characteristics shown on several areas, the course so It is characteristic that an evaluation device can easily recognize when the characteristic curves 19 of a selected number of image sections 18 has reached such a range.
  • the definition of this range is therefore a measure that depends on a number of parameters (print quality to be achieved, substrate, printing process, etc.) and can be performed as needed.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Quality & Reliability (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Rotary Presses (AREA)
  • Image Analysis (AREA)
  • Printing Methods (AREA)

Claims (15)

  1. Procédé pour ajuster l'image d'impression d'une machine d'impression rotative par ajustement de la position relative des rouleaux (3, 7, 8) participant au transfert des couleurs,
    - au moins une partie de ces rouleaux (7, 8) pouvant être déplacés les uns par rapport aux autres par des entraînements de réglage (M1 à M4) à la fois en commun et indépendamment les uns des autres, de sorte que les rouleaux (3, 7, 8) participant au processus d'impression puissent être placés les uns contre les autres,
    - des opérations de mesure étant effectuées au moyen d'au moins une caméra (K), des valeurs d'intensité successives de la lumière réfléchie au moins par des portions d'image de l'image d'impression étant enregistrées au cours de ces opérations de mesure,
    - les valeurs d'intensité étant acheminées à une unité de commande et de régulation et
    - l'unité de commande et de régulation produisant des signaux sur la base des valeurs d'intensité mesurées pour les entraînements de réglage d'au moins une partie des rouleaux participant au processus d'impression et de coloration,
    caractérisé en ce que
    - l'unité de commande et de régulation produit des signaux pour les entraînements de réglage d'au moins une partie des rouleaux participant au processus d'impression et de coloration jusqu'à ce que ou tant que
    - les valeurs d'intensité enregistrées présentent une allure déterminée.
  2. Procédé selon la revendication 1,
    caractérisé en ce que
    de la lumière ayant des plages de longueur d'onde sélectionnées est enregistrée.
  3. Procédé selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    - l'unité de commande et de régulation produit des signaux pour les entraînements de réglage d'au moins une partie des rouleaux participant au processus d'impression et de coloration jusqu'à ce que ou tant que
    - la comparaison des valeurs d'intensité avec la forme de consigne de l'image d'impression déposée dans une unité de mémoire donne la meilleure coïncidence.
  4. Procédé selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    - l'intensité de la lumière réfléchie de différentes portions (18) de l'image d'impression (10) est déduite de l'intensité de la lumière réfléchie du support d'impression non imprimé (17), et
    - une unité d'analyse ou de calcul (13) met en relation avec les positions relatives des rouleaux ces valeurs de différence ou de contraste (ki) de portions de l'image d'impression, une allure d'intensité ou une allure des valeurs de contraste (19) typique du procédé d'impression devant être observée pour différentes portions de l'image d'impression, et
    - l'unité de commande et de régulation (13) produit des signaux pour des entraînements de réglage (M1, M2, M3, M4) des rouleaux (3, 7, 8) participant au processus d'impression ou de coloration jusqu'à ce que ou tant qu'une proportion prédéfinie des différentes portions (18) de l'image d'impression présente une allure d'intensité déterminée ou une allure de valeurs de contraste déterminée (19).
  5. Procédé selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    l'enregistrement de l'image d'impression (10) ou au moins de parties de celle-ci (10) est réalisé avec au moins une caméra couleur (K) pour l'enregistrement.
  6. Procédé selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    - l'allure de l'intensité de lumière ou l'allure des valeurs de contraste d'au moins une couleur est mise en relation avec les positions des rouleaux par une unité de calcul, et
    - l'unité de commande et de régulation (13) produit des signaux pour des entraînements de réglage (M1, M2, M3, M3) des rouleaux (3, 7, 8) participant au processus d'impression ou de coloration tant que ou jusqu'à ce qu'une proportion prédéfinie des différentes portions de l'image d'impression (10) présente une allure d'intensité de couleur déterminée (19).
  7. Procédé selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    - les valeurs d'intensité de lumière ou les valeurs de contraste (19) de plusieurs couleurs sont enregistrées par l'unité de commande et de régulation, et
    - une unité de calcul transfère ces valeurs dans un autre système de coordonnées qui se base sur des coordonnées dérivées des valeurs d'intensité de lumière ou des valeurs de contraste (19), et
    - au moins une sélection de ces coordonnées est mise en relation avec les positions relatives des rouleaux, et
    - l'unité de commande et de régulation (13) produit des signaux pour des entraînements de réglage (M1, M2, M3, M4) des rouleaux (3, 7, 8) participant au processus d'impression ou de coloration tant que ou jusqu'à ce qu'une proportion prédéfinie des différentes portions (18) de l'image d'impression (10) présente une allure de coordonnées déterminée.
  8. Procédé selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    les valeurs (ki) déduites de l'intensité de lumière ou de couleur de la lumière réfléchie de l'image d'impression sont normalisées.
  9. Procédé selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    les valeurs (ki) déduites de l'intensité de lumière ou de couleur de la lumière réfléchie de l'image d'impression sont reportées par rapport à la position des rouleaux (3, 7, 8) participant au processus d'impression ou de coloration et sont affichées sur une console ou un écran.
  10. Procédé selon l'une quelconque des revendications 1 à 9,
    caractérisé en ce que
    dans le cas de plusieurs dispositifs d'impression, l'ajustement a lieu pour chaque dispositif d'impression sur la base d'opérations de mesure séparées.
  11. Procédé selon l'une quelconque des revendications 1 à 9,
    caractérisé en ce que
    l'ajustement de plusieurs dispositifs d'impression s'effectue sur la base d'une opération de mesure.
  12. Procédé selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    les ajustements géométriques des rouleaux (3, 7, 8) les uns par rapport aux autres, au cours desquels la meilleure coïncidence entre l'image d'impression enregistrée (10) et la forme de consigne de l'image d'impression a été constatée, et/ou jusqu'à ce qu'une proportion prédéfinie des différentes portions (18) de l'image d'impression présente une allure d'intensité ou de contraste déterminée,
    sont saisis dans une mémoire.
  13. Machine d'impression rotative, dans laquelle l'ajustement de son image d'impression peut être effectué par l'ajustement de la position relative des rouleaux (3, 7, 8) participant au transfert de couleur,
    dans laquelle une partie de ces rouleaux (7, 8) peuvent être déplacés les uns par rapport aux autres par des entraînements de réglage propres (M1 à M4) à la fois en commun et indépendamment les uns des autres, de sorte que les rouleaux (3, 7, 8) participant au processus d'impression puissent être placés les uns contre les autres,
    au moins une caméra (K) étant prévue, avec laquelle des opérations de mesure peuvent être effectuées, au cours desquelles des valeurs d'intensité successives d'au moins la lumière réfléchie par des portions d'image de l'image d'impression peuvent être enregistrées,
    une unité de commande et de régulation étant prévue, à laquelle peuvent être acheminées les valeurs d'intensité enregistrées,
    l'unité de commande et de régulation (13) étant conçue pour produire des signaux sur la base des valeurs d'intensité mesurées pour les entraînements de réglage d'au moins une partie des rouleaux (3, 7, 8) participant au processus d'impression et de coloration,
    caractérisée en ce que
    - l'unité de commande et de régulation est conçue pour produire des signaux pour les entraînements de réglage d'au moins une partie des rouleaux participant au processus d'impression et de coloration tant que ou jusqu'à ce que
    - les valeurs d'intensité enregistrées présentent une allure déterminée.
  14. Machine d'impression rotative selon la revendication précédente,
    caractérisée en ce que
    différentes régions spectrales de la lumière réfléchie peuvent être enregistrées par la caméra.
  15. Machine d'impression rotative selon la revendication précédente,
    caractérisée en ce que
    les entraînements de réglage sont munis d'un dispositif d'ajustement séparé pour créer un parallélisme entre les rouleaux (3, 7, 8) participant au processus d'impression.
EP05022128A 2001-03-27 2002-03-13 Dispositif et procédé de réglage de l'image d'impression dans une machine d'impression flexographique Expired - Lifetime EP1666252B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10115134 2001-03-27
DE10145957.2A DE10145957B4 (de) 2001-03-27 2001-09-18 Vorrichtung und Verfahren zur Einstellung des Druckbildes in einer Flexodruckmaschine
EP02005727A EP1249346B2 (fr) 2001-03-27 2002-03-13 Dispositif de repérage de l'image d'impression dans une machine d'impression flexographique

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP02005727A Division EP1249346B2 (fr) 2001-03-27 2002-03-13 Dispositif de repérage de l'image d'impression dans une machine d'impression flexographique
EP02005727.9 Division 2002-03-13

Publications (3)

Publication Number Publication Date
EP1666252A2 EP1666252A2 (fr) 2006-06-07
EP1666252A3 EP1666252A3 (fr) 2009-10-21
EP1666252B1 true EP1666252B1 (fr) 2012-06-13

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EP05022128A Expired - Lifetime EP1666252B1 (fr) 2001-03-27 2002-03-13 Dispositif et procédé de réglage de l'image d'impression dans une machine d'impression flexographique
EP02005727A Expired - Lifetime EP1249346B2 (fr) 2001-03-27 2002-03-13 Dispositif de repérage de l'image d'impression dans une machine d'impression flexographique

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Country Link
US (1) US6634297B2 (fr)
EP (2) EP1666252B1 (fr)
JP (2) JP4363819B2 (fr)
AT (1) ATE306395T1 (fr)
CA (1) CA2379013C (fr)
DE (3) DE20122584U1 (fr)
ES (2) ES2386548T3 (fr)

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Publication number Publication date
DE50204501D1 (de) 2006-02-23
ES2386548T3 (es) 2012-08-22
ES2232327T5 (es) 2013-04-17
JP2002355951A (ja) 2002-12-10
ES2232327T3 (es) 2006-03-16
EP1249346B1 (fr) 2005-10-12
US6634297B2 (en) 2003-10-21
EP1666252A3 (fr) 2009-10-21
CA2379013C (fr) 2010-05-25
DE10145957A1 (de) 2002-10-17
ATE306395T1 (de) 2005-10-15
EP1666252A2 (fr) 2006-06-07
ES2232327T1 (es) 2005-06-01
CA2379013A1 (fr) 2002-09-27
DE10145957B4 (de) 2014-09-25
JP4363819B2 (ja) 2009-11-11
EP1249346A1 (fr) 2002-10-16
EP1249346B2 (fr) 2013-03-06
US20030005840A1 (en) 2003-01-09
DE20122584U1 (de) 2006-07-27
JP2009179067A (ja) 2009-08-13

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