EP1700692B1 - Device for transferring imaging layers from a carrier sheet to printing sheets - Google Patents

Description

The invention relates to a device for transferring imaging layers from a carrier foil to printed sheets according to the preamble of patent claim 1.

It is known to produce metallic layers on printed sheets by means of a film transfer process. So is in the EP 0 569 520 B1 a printing material and a printing apparatus using this material are described. In this case, a sheet-processing machine is shown, which has a feeder and a boom, wherein printing units and a coating module are arranged between the two units. In at least one of the printing units, an adhesive pattern is applied by means of the planographic printing process. This adhesive pattern is applied in a cold printing process and has a specific imaging subject. In the printing unit following the coating module with a counter-pressure cylinder and a press roller, a film guide is provided. This is designed in such a way that a film strip or a transfer film is guided through the transfer nip of the coating module between the impression cylinder and the press roll from a film supply roll. The film strip is rewound on the outlet side after leaving the coating module. The transfer film has a carrier layer on which imaging layers such as metallic layers, for example of aluminum, can be applied. Between the metallic layer and the carrier film, a separating layer is provided, which ensures that the metallic layer can be removed from the carrier layer.

When printing sheets are transported through the printing unit, each sheet is given an adhesive pattern. Thereafter, the sheet is passed through the coating module, wherein by means of the press roller on the impression cylinder resting sheet with the film material in combination is brought. In this case, the downwardly lying metallic layer enters into a close connection with the areas provided with adhesive on the printed sheet. After the further transport of the printing sheet, the metallic layer only adheres in the area of the pattern provided with the adhesive. The carrier film is thus removed from the metallic layer in the region of the adhesive pattern. The used in this way transfer film is wound up again. The print sheet is laid out in the coated state.

It is known to use such coating modules, for example in printing units of printing presses. A disadvantage of the known devices is that they are not flexible and that the supply of the transfer film is complicated and difficult to handle.

From the WO 2005/100027 A1 is a stamping device with additional equipment known. The document published after the priority date of this application shows a film feed in a coating module for transfer of imaging layers. After this coating module, an embossing module is arranged, with which a relief can be introduced into the coated surface.

From the journal article " Offset printing and film transfer in just one pass ", Thomas Walther, Deutscher Drucker, No. 15, 29.04.2004 , a device for inline film transfer printing is known. For this purpose, a film feed for transfer film is arranged in a printing unit of a sheetfed offset printing press.

From the DE 102 32 255 A1 is a rotary printing machine known. In this sheet-fed printing machine, a number of offset printing units for pre-treatment of the printed sheet before printing and after the sheet feeder, a separate corona printing module is arranged upstream.

From the EP 1 147 893 A2 is a sheet-fed rotary printing press with a multifunction module known. The multifunction module is between the last

Printing unit of a sheet-fed offset printing machine and the boom of the printing press arranged. It is used to perform various additional work, such as perforating, punching, cutting, numbering, embossing and other similar processing steps.

The object of the invention is therefore to provide a device by means of which the transfer of an imaging layer, e.g. a metallization layer on a sheet can be done safely, economically and accurately, the device should be easy to handle.

The solution to this problem results in a device according to the features of claim 1.

Advantageously, a feed device is used to guide the transfer film, in which the transfer film is guided during feeding to the transfer nip by a modular control system.

An associated device for feeding the transfer film advantageously has a guide device in the manner of a cassette module, by means of which the supply to the transfer nip and the removal from the transfer nip are made possible in a simple manner.

The device can also be advantageously used in order to improve the use of the film by dividing the transfer film into one or more partial film webs of lesser width. In combination with the above-mentioned method, it is thus also possible to use different types of film side by side.

To ensure the efficiency of the coating process can be provided to control the film feed such that the transfer film is then stopped when no transmission of the imaging or metallization takes place.
Advantageously, a control of the transfer film can be carried out such that, when passing through a cylinder channel receiving the grippers of the sheet-guiding counter-pressure cylinder, the film feed is stopped, wherein the press roller then passes in a sliding manner under the transfer film.

To improve the gloss effect, the image-forming layer can be applied by means of so-called UV negative-pressure ink. The UV negative pressure ink is applied by means of the printing unit for the adhesive in a corresponding manner via an offset printing plate.

Advantageously, it is also possible to provide a plurality of coating modules behind one another within a sheet-processing machine. Thus, the application of different imaging coatings or metallization layers within a subject can take place one after the other. In this case, it is possible to transmit the imaging layers next to one another using a single adhesive pattern with all image-pattern elements. It is also possible to provide a first adhesive pattern in a first coating module with a first image-forming coating or metallization layer and, in the following, to apply another, the first enclosing adhesive pattern and to provide it with another image-forming coating or metallization layer.

In the following the invention is illustrated in more detail with reference to figures.

Figur 1

eine grundsätzliche Darstellung einer Druckmaschine mit einer Folientransfereinrichtung und

Figur 2

den Aufbau eines Beschichtungsmodules mit einer Folientransfereinrichtung und

Figur 3

einer Einrichtung zur Zuführung von Transferfolie in detaillierter Darstellung.

Showing:

FIG. 1

a basic illustration of a printing machine with a film transfer device and

FIG. 2

the construction of a coating module with a film transfer device and

FIG. 3

a device for feeding transfer film in a detailed representation.

• Ein zu beschichtender Druckbogen wird in einem ersten Arbeitschritt mit einem bildgebenden Klebstoffmuster versehen. Der Auftrag des Klebers erfolgt im einer als Auftragwerk 1 konfigurierten Vorrichtung, z.B. einem konventionellen Druckwerk einer Offsetdruckmaschine über dort vorhandene Farb- und Feuchtwerke 11, eine Druckplatte auf einem Plattenzylinder 12, einen Drucktuch- oder Gummizylinder 13 und einen Gegendruckzylinder 4.
• Danach wird in einem zweiten Schritt gemeinsam mit einem Druckbogen eine Transferfolie 5 durch einen Transferspalt 6 geführt, wobei die Transferfolie 5 im Transferspalt 6 gegen den Druckbogen gepresst wird. Hierzu wird ein Beschichtungsmodul 2 verwendet, das einem Druckwerk oder einem Lackmodul oder einer Basiseinheit oder einer andersartigen Verarbeitungsstation einer Bogenoffsetdruckmaschine entsprechen kann.
• Der Transferspalt 6 im Beschichtungsmodul 2 wird durch eine Presswalze 3 und einen Gegendruckzylinder 4 gebildet.
  Hierbei kann die Presswalze 3 einem Drucktuchzylinder und der Gegendruckzylinder 4 einem Gegendruckzylinder eines an sich bekannten Offsetdruckwerkes entsprechen.
  Weiterhin kann die Presswalze 3 einem Formzylinder und der Gegendruckzylinder 4 einem Gegendruckzylinder eines Lackmodules einer Bogendruckmaschine entsprechen.
• Weiterhin kann dem Beschichtungsmodul 2 nachgeschaltet ein so genanntes Kalandrierwerk vorgesehen werden, wenn der beschichtete Druckbogen zur Steigerung der Haftung der Beschichtung bzw. zur Steigerung von Glätte und Glanz des Druckbogen unter erhöhtem Druck überwalzt werden soll.

In FIG. 1 is a sheet-processing machine, here a printing press, shown, which consists of at least two printing units. The two printing units are used for the following purposes:

• A sheet to be coated is provided in a first step with an adhesive imaging pattern. The application of the adhesive takes place in a device configured as an applicator 1, for example, a conventional printing unit of an offset printing press on there existing inking and dampening 11, a printing plate on a plate cylinder 12, a blanket or blanket cylinder 13 and a counter-pressure cylinder. 4
• Thereafter, in a second step, together with a printing sheet, a transfer film 5 is guided through a transfer nip 6, wherein the transfer film 5 is pressed in the transfer nip 6 against the printing sheet. For this purpose, a coating module 2 is used which can correspond to a printing unit or a lacquer module or a base unit or another type of processing station of a sheet-fed offset printing press.
• The transfer nip 6 in the coating module 2 is formed by a press roll 3 and an impression cylinder 4.
  Here, the press roller 3 a blanket cylinder and the impression cylinder 4 correspond to a counter-pressure cylinder of a known offset printing unit.
  Furthermore, the press roller 3 a forme cylinder and the impression cylinder 4 a counter-pressure cylinder of a paint module of a sheet-fed press correspond.
• Furthermore, the coating module 2 downstream of a so-called calendering be provided when the coated sheet to increase the adhesion of the coating or to increase the smoothness and gloss of the sheet is to be rolled under increased pressure.

Within the coating module 2 used for the film transfer, a web guide for transfer films 5 is shown.
For processing in question transfer sheets 5 are constructed in multiple layers. They have a carrier layer on which an imaging layer is applied by means of a release layer. The separating layer serves to facilitate lifting of the imaging layer from the carrier layer. The image-forming layer may be, for example, a metallized layer or a glossy layer or a texture layer or a colored layer or a layer containing one or more image patterns.

The film supply roll 8 is assigned to the coating module 2 on the sheet feed side. The film supply roll 8 has a rotary drive 7. The rotary drive 7 is required for the continuous controlled feeding of the transfer film 5 to the coating module 2 and is therefore controllable.
Furthermore, in the field of film feed and removal guide devices 14, such as deflection or tensioning rollers, pneumatically actuated conducting means, baffles o. Ä. Provided. Thus, the film web of the transfer film 5 can always be performed flat without distortion and held in the same voltage against the press roller 3. The guide devices 14 may also contain aids for introducing the transfer film 5. In this case, automatic retraction aids for the film web of the transfer film 5 can be used.
In this way, the film feed in the area of the coating unit 2 surrounding Verschutzungen 15 is simplified. The protective function of Verschutzurigen 15 is maintained at the same time completely.

In this case, the transfer film 5 can be guided around the press roll 3, wherein the transfer film 5 can be fed and discharged in an advantageous manner from one side of the coating module 2 to the press nip 6. In a further embodiment, the transfer film 5 can also be fed in and out substantially tangentially on the press roll 3 or wrap it around the press nip 6 only in a small circumferential angle. For this purpose, the transfer film 5 is supplied from one side of the coating module 2 and discharged to the opposite side of the coating module 2.

On the downstream side of the printing unit, a film collection roller 9 is shown. On the film collecting roll 9, the used film material is wound up again. Again, a rotary drive 7 is provided for the optimized production, which is controllable. In essence, the transfer film 5 could also be moved by the rotary drive 7 on the discharge side and kept taut on the inlet side by means of a brake.

For the transfer process of the imaging eg wear layer of the transfer sheet 5 on the sheet in the transfer nip 6 between the press roll 3 and the impression cylinder 4 is essential that the surface of the press roll 3 so the blanket cylinder or forme cylinder is equipped by means of a compressible, damping element.
The press roll 3 is therefore provided with a press fabric 10 or as a roll with a corresponding coating. The press fabric 10 or press coating can be performed, for example, as a plastic coating, comparable to a blanket or blanket. The surface of the press fabric 10 or press coating is preferably very smooth. It can also be formed from antiadhesive substances or structures. Here, for example, a relatively hard structure in the form of very fine spherical caps comes into question. A press fabric 10 is held on the press roll 3 in a cylinder channel on jigs.
The press fabric 10 may be equipped to improve the transmission properties in the transfer nip 6 with a targeted elasticity. This may optionally act in a compressible intermediate layer. This compressibility is preferably similar or less than in conventional blankets or blankets, which can also be used at this point.
The mentioned compressibility can be produced by means of a conventional compressible printing blanket. Furthermore, combined fabrics made of a hard blanket and a soft pad can be used.
Furthermore, a limited pressing surface can be provided directly on the press roll 3 or on the press fabric 10. This can be worked out of the surface of the press fabric 10 or it can be additionally attached as a partial surface of the material of the press fabric 10 on the press roller 3.

• Hierzu kann eine Steuerung der Transferfolie 5 derart erfolgen, dass beim Durchlaufen eines Greifer des bogenführenden Gegendruckzylinders 4 aufnehmenden Zylinderkanäles der Folienvorschub angehalten wird. Die Greifer halten den Druckbogen auf dem Gegendruckzylinder 4. Die Presswalze 3 weist einen dazu korrespondierende Zylinderkanal auf, in dem die Bespannung gehaltert ist. Im Bereich der korrespondierenden Zylinderkanäle erfolgt keine Pressung der Transferfolie 5 zwischen der Presswalze 3 (Drucktuchzylinder) und dem Gegendruckzylinder 4. Die Presswalze 3 läuft dann unter der Transferfolie 5 gleitend durch, während die Transferfolie 5 zwischen Presswalze 3 und Gegendruckzylinder 4 frei gespannt ist. Dieser Zustand dauert an bis am so genannten Druckanfang der Zylinderkanal endet und die Transferfolie 5 erneut zwischen der Presswalze 3 und dem Gegendruckzylinder 4 unter Einschluss eines Druckbogens eingeklemmt wird. Dann wird die Transferfolie 5 weiter transportiert. Die Taktung des Folienvorschubes kann entsprechend einer notwendigen Beschleunigung bzw. Bremsung der Folienvorratsrolle 8 bzw. Foliensammelrolle 9 etwas früher beginnen bzw. aussetzen als dies die Kanalkanten des Zylinderkanals vorgeben. Bei reaktionsschnellen Taktungssysternen über so genannte Tänzerwalzen 18, wie sie beispielhaft in Figur 1 eingezeichnet sind, ist die Steuerung der Drehantriebe 7 der Folienvorratsrollen 8 bzw. Foliensammelrolle 9 ggf. nicht erforderlich. Mittels der Tänzerwalzen 18 wird ebenfalls die notwendige Folienspannung aufrecht erhalten.

To ensure the cost-effectiveness of the coating process, it is provided that the film advance of the transfer film 5 from the film supply roll 8 to the transfer nip 6 and the film collection roll 9 is controllable so that as far as possible the transfer film 5 is stopped when no transfer of the imaging layer should take place :

• For this purpose, a control of the transfer film 5 can be carried out such that the film feed is stopped when passing through a gripper of the sheet-guiding counter-pressure cylinder 4 receiving cylinder channels. The grippers hold the printed sheet on the impression cylinder 4. The press roll 3 has a corresponding cylinder channel, in which the fabric is held. In the region of the corresponding cylinder channels no pressing of the transfer film 5 takes place between the press roll 3 (blanket cylinder) and the impression cylinder 4. The press roll 3 then slidably passes under the transfer film 5, while the transfer film 5 is tensioned freely between the press roll 3 and impression cylinder 4. This state continues until at the so-called pressure beginning of the cylinder channel ends and the transfer film 5 is again clamped between the press roller 3 and the impression cylinder 4, including a sheet. Then, the transfer sheet 5 is further transported. The timing of the film feed can begin or suspend slightly earlier than pretend the channel edges of the cylinder channel according to a necessary acceleration or braking of the film supply roll 8 or film collecting 9. In fast-response Taktungssysternen on so-called dancer rollers 18, as exemplified in FIG. 1 are drawn, the control of the rotary actuators 7 of the film supply rolls 8 or film collecting roll 9 may not be necessary. By means of the dancer rollers 18, the necessary film tension is also maintained.

A further improvement of the film utilization of the type described results from the fact that the transfer film 5 is divided into one or more Teilfolienbahnen lesser width. Thus, with appropriate control by means of the device or devices for timing the film feed each of the sub-film webs, the utilization of the transfer film 5 can be improved even in zonally different lengths coating areas within an arc. For this purpose, each partial film web is conveyed only exactly in the area where the imaging surface layer is to be applied. In the areas not to be coated, each partial film web can be stopped independently of the other partial film webs, whereby no unnecessary film consumption arises.

Furthermore, to improve the coating process provided in the area of the adhesive application and in the area of the film order dryer 16 provided. Thus, in particular by means of UV drying, the imagewise applied adhesive layer can be predried by means of a first dryer 16 (intermediate dryer I) so that the wear layer of the transfer film 5 adheres better. Furthermore, the adhesive effect of the applied wear layer on the printed sheet can be improved by the action of a second dryer 16 (intermediate dryer 11) by additionally accelerating the drying of the adhesive.

Finally, the quality of the coating can be controlled by means of an inspection or monitoring device 17 after the foil application. For this purpose, the inspection device 17 is directed to a sheet-guiding surface of the coating module 2 after the transfer nip 6 and optionally sealed off from the dryer 16 or on a sheet-guiding surface of the coating module 2 downstream further sheet leading module. The pre-applied coated printing sheet can thus be checked for completeness and quality of the coating. As poorly recognized printed sheets can be marked or rejected in a sorter as waste.

With the aid of the device described, it is also possible to transfer pretreated films or layers from a transfer film to a printed sheet in a working process preceding the coating process.

• Kombination der Beschichtung mit einer Nummerierung als mechanischer Druckprozeß oder durch Inkjet-Druck oder durch Lasergravur oder durch Anbringung von Hologrammen. Hierbei wird also eine vorbehandelte Beschichtung von einer Folie aufgebracht und diese wird mittels einer im Beschichtungsmodul 2 integrierten Nummerier-Einrichtung nachbearbeitet.
• Kombination der Beschichtung mit einer Anordnung von Präge- oder Struktur-Werkzeugen, derart zugeordnet, dass Effekte auf der Transferfolie angebracht werden oder dass Effekte auf der Beschichtung aufgebracht werden.
• Kombination mit einer Anordnung, in der radiofrequente Etiketten oder andere Funktionselemente auf der Transferfolie zum Transfer auf den Bedruckstoff aufgetragen sind oder auf der Transferfolie aufgedruckt sind und auf einem Endprodukt platziert werden können. Dies gilt auch für Hologramme.

Furthermore, an inline coating can be made of a transfer film, which is carried out in combination with the following operations:

• Combination of the coating with a numbering as a mechanical printing process or by inkjet printing or by laser engraving or by attaching holograms. In this case, therefore, a pretreated coating is applied by a film and this is post-processed by means of a numbering device integrated in the coating module 2.
• Combining the coating with an array of embossing or patterning tools, such that effects are applied to the transfer film or effects are applied to the coating.
• Combination with an arrangement in which radiofrequency labels or other functional elements are applied to the transfer film for transfer to the printing substrate or are printed on the transfer film and can be placed on a final product. This also applies to holograms.

1. a) gegebenenfalls Zufuhr des Bedruckstoffes von einem Rolle-Bogen-Anleger, um minderwertigen Bedruckstoff einsetzen zu können,
2. b) Vorbeschichten des Bedruckstoffes zur Glättung bzw. Festigen der Oberfläche oder zum optischen Vorbereiten,
3. c) Aufbringen einer bildmässigen Beschichtung im Prägeverfahren durch Übertragung von der Transferfolie,
4. d) damit gleichzeitig können Prozesse zum Drucken, Lackieren. Prägen oder Stanzen innerhalb der gleichen Bogen verarbeitenden Maschine erfolgen,
5. e) das Endprodukt kann vor der Auslage einer Inspektion unterzogen werden.

The following operations can also be combined as process steps:

1. a) optionally feeding the printing material from a roll-bow feeder in order to use inferior printing material,
2. b) precoating the printing substrate for smoothing or consolidating the surface or for optical preparation,
3. c) application of an imagewise coating in the embossing process by transfer from the transfer film,
4. d) so that at the same time processes for printing, varnishing. Embossing or punching takes place within the same sheet-processing machine,
5. e) the final product may be inspected before delivery.

The adhesive can, for example, according to the biocode method, an organic chemical z. B. in paints and colors are added to produce an aid for protection against counterfeiting, eg for drug packages.
This chemical coding can be demonstrated by simple test procedures. Of course, this feature can also be applied by inline method before or after the coating of a transfer film.

The processing of the transfer film can be expanded in a variety of forms. You can work with a format-wide roll or several rolls over the format width. The film web of the transfer film can in this case be clocked in its feed or fed continuously or adapted to the machine speed.

Furthermore, the coating module can be equipped with an automated or semi-automated changing system for the film rolls in order to reduce set-up times. This can be done in the simplest form with a roll changer or changing star.
To speed up and simplify the web feed, a pull-in aid in the form of a band made of plastic or steel can be integrated into the machine. The reduction of set-up time will be an essential part of the economy of the entire system.

For film tear detection for the prevention of machine damage, the coating module 2 should be associated with a film cap device with foil catch in the vicinity of the unwinding.
The film crack detection is made possible by the devices for web tension detection or control or / and a sensor for web monitoring.

• Partielle Aufbringung des Klebers durch Farbkastentrenner ermöglicht die gezielte Aufbringung von Kleber bei ungleichmäßig verteilter Sujetierung auf dem Druckbogen.
• Bei kompakter Bauweise besteht die Möglichkeit der Aufbringung von Beschichtungen im Kaltfolienprägeverfahren und des notwendigen Klebers innerhalb des Beschichtungsmodules nacheinander. In gleicher Weise kann hierbei die Anordnung so erfolgen, dass der Kleber in einem ersten Beschichtungsmodul für die Anbringungen eines zweiten Sujets ggf. einer anderen Beschichtungsart in einem nachgeschalteten zweiten Beschichtungsmodul verwendet wird.
• Erfindungsgemäß ist ein Inkjet-Druckkopf am Beschichtungsmodul zur Personalisierung von z.B. Strichcodes oder andere Codierungen usw. auf der Transferfolie vor dem Einlauf in die Druckzone vorgesehen. Die Ablösung und Übertragung der Codierung erfolgt dann gemeinsam mit der bild gebenden Schicht von der Transferfolie im Transferspalt.

Further possibilities for expanding the field of application of cold foil stamping are as follows:

• Partial application of the adhesive by color box divider allows the targeted application of adhesive in unevenly distributed Sujetierung on the sheet.
• In a compact design, the possibility of applying coatings in the cold foil stamping process and the necessary adhesive within the coating module in succession. In the same way, the arrangement can be made such that the adhesive is used in a first coating module for the attachment of a second subject, if necessary, another type of coating in a downstream second coating module.
• According to the invention, an inkjet print head is provided on the coating module for personalization of, for example, bar codes or other codes, etc. on the transfer film prior to entry into the print zone. The detachment and transmission of the coding then takes place together with the image-forming layer of the transfer film in the transfer nip.

By means of the described devices and measures rationalizations result by multifunctional inline fitness of the sheet processing machine. In particular, the application of surface finishes is made possible regardless of the printing process.

• Vorbeschichtung des strukturierten Bedruckstoffes z.B. mit Deckweiß, Iriodinlacke o.ä. in partiellen Bereichen oder aber vollflächig. Dies dient als Grundlage für nachfolgende Druck- und Beschichtungsvorgänge und die ggf. minderwertige Außenseite des strukturierten Bedruckstoffes kann so verbessert werden
• Drucken mit einer oder mehreren Farben (z.B. auch Rückseitendruck und Wendung (oder Lackieren im Druckwerk)
• Inkjet-Einrichtung zur Kennzeichnung von Druckbogen bereits vor dem Druck- oder Beschichtungsvorgang im Anlagebereich
• Inkjet-Einrichtung zur Kennzeichnung der Transferfolie 5 bereits vor dem Einlauf in den Druck- oder Beschichtungsvorgang
• Bildmäßiger Kleberauftrag über Offsetdruckwerk, Lackmodul oder Inline-Beschichtungseinrichtungen an Druckwerken
• Applikation einer Folienbeschichtung im Transferverfahren von einer Transferfolie 5 im Transferspalt 6 zwischen Gegendruckzylinder 4 und Presswalze 3 z.B. Gummi-/Drucktuchzylinder oder Formzylinder
• Drucken eines Sujets mit einer oder mehreren Farben über die zuvor aufgebrachte bitdmässige Folienbeschichtung
• Zusätzlicher Informationseintrag bzw. Oberflächenveredelung mittels Inkjet-Systemen nach dem Druck- oder Beschichtungsvorgang innerhalb eines Druckwerkes, z.B. direkt nach dem Druckspalt, oder auch auf Bogen führenden Elementen im Auslagebereich
• Anwendung von Trocknersystemen für
  • → Zwischentrocknung der Vorbeschichtung,
  • → und/der Vortrocknung des Klebers,
  • → und/oder Nachtrocknung der Folienbeschichtung,
  • → und/oder Nach-/Zwischentrocknung der Drucke,
  • → und/oder Nach-/Zwischentrocknung der kombinierten Beschichtung,
  • → und/oder Nach-/Zwischentrocknung der zusätzlichen Veredelungen.
• Auslage der Bogen mit ggf. verlängerter Trockenstrecke und spezieller Bogenführung in Bezug auf die beschädigungsfreie Auslage sowie Möglichkeiten zum automatischen Stapelwechsel, da bei den relativ dick auftragenden strukturierten Bedruckstoffen stets ein schnelles Stapelwachstum vorliegt.
• Vorteilhaft ist eine integrierte Anwendung einer Bogeninspektion im Druckwerk oder Lackmodul; damit kombiniert kann eine sogenannte Bogenweiche oder ein Doppelbogenausleger für Makulaturbogen eingesetzt werden. Ebenso kann eine Markierung der Makulaturbogen über ein Streifeneinschussgerät erfolgen.

A method for the inline processing of printing materials which can be carried out with the described devices can comprise the following steps:

• Pre-coating of the structured substrate eg with opaque white, iriodin varnish or similar in partial areas or over the entire surface. This serves as the basis for subsequent printing and coating processes and the possibly inferior outer surface of the structured printing material can be improved in this way
• Printing with one or more colors (eg also backside printing and turning (or varnishing in the printing unit)
• Inkjet device for marking printed sheets before the printing or coating process in the investment area
• Inkjet device for marking the transfer film 5 before entering the printing or coating process
• Imagewise adhesive application via offset printing unit, coating module or inline coating equipment on printing units
• Application of a film coating in the transfer process of a transfer film 5 in the transfer nip 6 between impression cylinder 4 and press roller 3, for example, rubber / blanket cylinder or forme cylinder
• Printing a subject with one or more colors over the previously applied bituminous foil coating
• Additional information entry or surface refinement by means of inkjet systems after the printing or coating process within a printing unit, for example, directly after the printing nip, or on sheet leading elements in the display area
• Application of drying systems for
  • → intermediate drying of the pre-coating,
  • → and / or pre-drying the adhesive,
  • → and / or after-drying of the film coating,
  • → and / or post / intermediate drying of the prints,
  • → and / or post / intermediate drying of the combined coating,
  • → and / or post / intermediate drying of the additional finishing.
• Delivery of the sheets with possibly extended drying section and special sheet guidance in relation to the damage-free delivery as well as possibilities for automatic stack change, since with the relatively thick-spreading structured substrates always fast stack growth exists.
• Advantageous is an integrated application of a sheet inspection in the printing unit or paint module; combined with this, a so-called curved switch or a double-sheet delivery for waste paper can be used. Likewise, a marking of the spoiling sheet can be made via a strip injection device.

In the sheet-processing printing machine for printing and coating a structured printing material, a paint module or an in-line coating device according to FIG. 3 be used.

It may be advantageous that such an inline coating device can be combined with a chambered doctor blade 20, an anilox roller 21 and possibly an intermediate roller 22 (rubber roller) with a plate cylinder or a blanket cylinder or a forme cylinder at different points of a printing press. In Fig. 3 is a version shown in which the coating takes place via a forme cylinder 13 in a paint module.
In this case, by means of such a device both adhesive and a pre-coating (primer) and a final coating (gloss, protective, drying coating) can be applied in a very flexible embodiment.

The combination of the aforementioned elements
Application unit 1, coating module 2, printing unit, coating module, coating device, dryer, inkjet printing device and possibly other inline processing stations
Depending on the machining process can be combined as desired within a sheet-processing machine.

Here are some examples of possible combinations of elements in different configurations:

Configuration A:

1. I. Contractor 1
2. II. Coating module 2
3. III. Printing / -e
4. IV. Paint module / -e
5. V. Boom with dryer / drying section

Configuration B:

1. I. Contractor 1
2. II. Intermediate dryer
3. III. Coating module 2
4. IV. Intermediate dryer
5. V. Printing unit / -e
6. VI. Coating module / -e
7. VII. Boom with dryer / drying line

Configuration C:

1. I. Coating unit / paint module
2. II. Intermediate dryer
3. III. Contractor 1
4. IV. Coating module 2
5. V. Printing unit / -e
6. VI. Coating module / -e
7. VII. Boom with dryer / drying line

Configuration D:

1. I. Coating unit / paint module
2. II. Intermediate dryer
3. III. Printing / -e
4. IV. Intermediate dryer
5. V. Contractor 1
6. VI. Coating module 2
7. VII. Intermediate dryer
8. VIII. Printing unit / s
9. IX. Coating module / -e
10. X. inspection system
11. XI. Dryer / drying line
12. XII. Boom with discharge

Configuration E:

1. I. Inkjet printing unit
2. II. Contractor 1
3. III. Coating module 2
4. IV. Printing unit / s
5. V. Inkjet printing unit
6. VI. Coating module / -e
7. VII. Inspection system
8. VIII. Drying section
9. IX. boom

• anwendbare Druckverfahren:
  • alle konventionellen Druckverfahren
  • oder Verfahren mit UV-trocknenden Druckfarben
  • oder Mischverfahren z.B. mit Hybrite-Druckfarben und
• anwendbare Lackierungen:
  • konventionell wasserbasierende Lackierung
  • oder Lackierung mit UV-trocknenden Lacken.

The process technology described can be used in many ways in the production of refined products. Here are

• applicable printing methods:
  • all conventional printing processes
  • or methods with UV-drying inks
  • or mixing process eg with Hybrite printing inks and
• Applicable coatings:
  • Conventional water-based coating
  • or varnishing with UV-drying varnishes.

LIST OF REFERENCE NUMBERS

1

commissioned

2

coating module

3

press roll

4

Impression cylinder

5

Transfer foil / foil web

6

transfer nip

7

roller drive

8th

Film supply roll

9

Foil composite role

10

Press covering

11

Inking / dampening unit

12

plate cylinder

13

Blanket / blanket cylinder

14

Folienleiteinrichtung

15

Printing plant security

16

dryer

17

Inspection device / monitoring system

18

dancer roll

19

20

21

chambered doctor blade

22

anilox roller

23

intermediate roll

Claims (1)

1. A device for coating print sheets in a sheet-fed printing press making use of a transfer foil (5) formed of imaging layers and a substrate foil for the transfer of imaging layers from a substrate foil to the print sheets at least with one application unit (1) for image-based coating of a print sheet with adhesive and with a coating module (2) for transferring the image-providing layers from the substrate foil to the print sheets, wherein the coating module (2) contains an impression cylinder (4) and a press roller (3), which form a common transfer nip (6) and wherein furthermore the substrate foil can be guided through the transfer nip (6) in such a manner that it is placed onto the print sheet guided in the impression cylinder (4) and under pressure jointly with the print sheet through the transfer nip (6) and wherein the imaging layer/s following the exit of the print sheet from the transfer nip (6) in the region of the image-based regions provided with adhesive adheres to the print sheet and is lifted off the substrate foil,
   wherein downstream of the coating module (2) at least printing couples are arranged and wherein a further processing station is provided,
   characterized in that
   a device for the inkjet printing is assigned to the coating module (2) for marking the transfer foil (5) to be fed to the transfer nip (6).

Images