EP2628594B1 - Digital pad printing method - Google Patents

Description

The present invention relates to the field of colored digital ink pad printing.

Pad printing is a widely used printing technique for printing on workpieces having planar and / or uneven and raised, recessed or generally curved surface areas. The areas of application of the pad printing technology are due to the ability to print on even non-planar surfaces by a deformable tampon, very diverse. It can e.g. Cups, buttons of any kind, lighters, pens, levers, tennis and golf balls, cups, tools and other non-flat workpieces are easily printed.

Pad printing usually use a deformable tampon, which receives in a cliché given as depression and consisting of ink existing print motif by means of pressure contact and transferred in a second step, the recorded motif by means of pressure contact on a workpiece.

Clichés are the carriers of the chemical, photochemical or laser printed motifs and can be subdivided into different types. The clichés can be made of metals such as steel, strip steel, aluminum or chrome as well as ceramics but also of a variety of polymers and alkoxides. As a rule, the print motif in the cliché is etched deepened on metallic surfaces, first photo-exposed on UV-sensitive surfaces and then with a washout medium, the substrate to be removed is washed out. Ceramic surfaces and alkoxide surfaces can be prepared by laser imaging.

The term "colored" in the context is to be understood as meaning both the primary colors (red (magenta), blue (cyan), yellow), their mixed colors as well as a "transparent color", individual colors, white and black.

The term "digital printer" should be understood in the context to mean printers such as ink jet printers that enable non-contact printing of a subject.
The term "digital pad printer" is to be understood in the context as meaning a printing device comprising a digital printer and a pad printing device as a combination.
The terms "digital pad printing system" and "digital pad printing device" are to be understood as synonyms for "digital pad printing".

A conventional digital pad printing system, unlike a pad printing system, does not use a cliche but essentially uses a planar release substrate having an ink receiving surface on which an ink motif is printed with a digital printer, the printed ink motif being press contacted onto a tampon in a subsequent operation is transmitted.

Such a digital tampon printing device is in the document EP 1 053 882 B1 disclosed. The document describes a printer comprising a digital printer and a conventional pad printing device. This printer includes a substantially planar dispensing substrate having a printing ink receiving surface. With an inkjet printer having a plurality of printheads, ink is delivered from the nozzles to the ink receiving surface of the dispensing substrate to print a motif, the printheads and the dispensing substrate being movable relative to one another. The printed ink motif is picked up by a print transfer ink from the discharge substrate by means of pressure contact and transferred to an object to be printed by means of pressure contact. The dispensing substrate is configured as an endless conveyor that cyclically travels past the printheads in a conveying direction.

Another digital tampon printing device is in the document EP 0 802 051 A1 disclosed. The printing device includes a substantially planar writable dispensing substrate, which may be, for example, a textile tape and a natural or synthetic material, the backing having a certain microporosity to prevent the ink of the inkjet printer from blurring, To be able to pick up streaks or loss of outlines. The delivery substrate is thereby unrolled from a supply reel and rolled up again after printing by a take-up reel. The image printed on the substantially flat base is picked up by a movable pad by pressure contact and transferred in a subsequent step to a desired location of a workpiece to be printed.

The conventional digital pad printing systems are generally characterized by a relatively complicated mechanical structure, which is reflected in the printing processes. In the printing processes, the delivery substrate is an object for receiving and delivering an ink motif, and is part of a delivery device that places the delivery substrate into the area of action of the particular printing device, the digital printing device, and the pad printing device operating at different printing levels.

In conventional digital printing systems, a printing method is known in which the delivery substrate is unrolled by means of a delivery substrate conveying device in a first plane from a supply spool and printed with a digital printer. By a deflection roller / guide the dispensing substrate is deflected in a second parallel above or below level, so that the dispensing substrate changes orientation when changing the planes and continues parallel to the first level upside down. In this second level, the transfer of the ink motif from the delivery substrate to the tampon occurs by pressure contact. While this construction achieves that the printer can be made more compact, it has the disadvantage that the structure of the printing press becomes relatively complex, because a conveying device is needed which places the discharge substrate in the area of action of the respective printing device, the digital printer and the pad printing device who operate on different pressure levels, must order.

In other conventional digital ink pad printing systems, a delivery device configured as an endless conveyor is provided for the delivery substrate. The dispensing substrate moves cyclically past the printheads in a conveying direction, the dispensing substrate changing both the plane and the orientation in the printing processes. Even with such a printing device is a Dispensing substrate conveying device necessary to perform the printing processes on two levels can.

It is desirable to at least partially simplify the construction of the digital ink printing apparatus and the printing processes. This is accomplished by substantially maintaining a substantially planar release substrate having an ink-receiving surface while the printing process substantially retains orientation, and the dispensing substrate device is configured neither as an endless conveyor nor as a conveyor comprising a supply and take-up reel, so a simplified construction the machine is reached.

The inkjet printer as well as the pad printing device preferably operate on the same plane for the sake of simplicity. The dispensing substrate device of the dispensing substrate, unlike the conventional digital ink pad printing apparatus, may be simplified in structure so as to function only as a retainer and not to move substantially, with the digital printer, the pad printer, and the dispenser substrate cleaning apparatus moving relative thereto. It is thereby achieved that the dispensing substrate substantially retains orientation during the entire process duration.

The simplified construction has the advantage that costs can be reduced, and also that accessibility from above is at least partially facilitated because the delivery substrate substantially maintains orientation and because the individual printing devices operate at the same levels.

In addition, the digital tampon printing device is particularly suitable by the simplified design to perform the printing method of the invention.

Conventional digital tampon printers have the disadvantage that the stability of the entire printing process is not always given, since with the ongoing process, small paint residues deposit on the release substrate, so that as a result, a consistently high quality of the print motifs can no longer be guaranteed. Manual cleaning of the dispensing substrate must be done depending on the Type of colored subjects as well as the type of printing inks used as needed at certain time intervals.

When transferring an ink motif from the delivery substrate to the tampon, small ink rests remain on the delivery substrate so that re-printing an ink motif with a digital printer may result in a dirty and blurred image on the delivery substrate. It goes without saying that dark ink residues left on the release substrate, re-printing the same spot with a lighter color will result in color falsification of the image and fuzzy and no longer high quality overall motifs. Printing a work piece with the color-corrupted ink motif can lead to high production failure rates.

One in the DE 197 06 295 C2 described method discloses a solution to the above problem. After removal of the color print from the delivery substrate with the tampon, the tampon is used for intermediate cleaning of the sample surface of the delivery substrate involved in the acceptance.

In this approach, however, the problem arises that the intermediate cleaning of the release substrate with the tampon means an additional step, which equates to an interruption of the process flow and costs in total time. The printing speed of the printing press is consequently significantly reduced overall.

Another problem with the method is that the quality of cleaning is relatively low, since the receptivity of the ink fountain bar pad, especially for partially dried ink residues, is generally not high enough to completely clean the release substrate after a single cleaning. The quality problem resulting from said process could be counteracted by, for example, cleaning the release substrate in several purification steps. However, it will be understood that after each cleaning step, the tampon itself must be cleaned with, for example, a tampon cleaning device so as not to retransfer the adhering ink residue to the delivery substrate. The more Cleaning steps are necessary, the slower the printing speed of the printing press fails.

It would be desirable to have a method by which, on the one hand, the above-mentioned additional steps can be avoided in order to achieve higher printing speeds and with which, on the other hand, the above-mentioned problem of print quality can be minimized.

From the document DE 199 26 185 A1 Known as the closest prior art, a method is known for performing at least one printing cycle with a digital ink printing apparatus for printing a colored ink motif on a workpiece, wherein a printing cycle comprises the steps of: (a) disposing a substantially planar release substrate in the sphere of influence of an inkjet printer; Step (b) printing the ink motif on the delivery substrate by means of the inkjet printer; Step (c) placing the printed release substrate in the area of action of a tampon; Step (d) transferring the ink motif to the tampon; Step (e) cleaning operation of the discharge substrate and transferring the ink motif from the tampon to a workpiece; wherein steps (a) to (e) occur successively and step (a) forms the beginning of a further printing cycle, during which the orientation of the dispensing substrate is substantially maintained throughout the process. For this purpose, a tampon is shut down on the print material and at the same time sprayed with a color transfer device, a new printed image on the transfer plate in this process.

In the DE 10 2008 029 558 A1 discloses a method in which a cleaning operation of a first tampon 4 is performed during a printing operation of a second tampon 44, which tampons 4, 44 are mounted on a changing device 50, 150.

The present invention has for its object to provide a digital ink pad printing machine, with a constant high process speed can be guaranteed while maintaining high print quality.

According to the invention, the abovementioned objects are achieved by the procedure according to the method according to claim 1. Subclaims describe preferred embodiments of the present invention.

When, in the context of this description, cleaning is mentioned, this does not only mean the execution of the cleaning following the previous working step. The term cleaning operation is intended to mean the arrangement of a device following the previous working step into the area of action of a second device for carrying out the cleaning.

If, in the context of this description, "placing a first device in the area of action of a second device" is referred to, this does not only mean the forward movement of the first device into the area of action of the second device. In the terms "arranging" or "arrangement" should also be meant the relative movement of the two devices to each other, in the relative movement, for example, move both devices or only the second device is moved towards the first, so that after the arrangement, a device is within the scope of another device, so that the implementation of a desired step can take place.

The printing method according to the invention is carried out, inter alia, by the fact that the cleaning of the release substrate with the tampon is abandoned and carried out with a dedicated release substrate cleaning device.

A control unit determines an optimal sequence of process steps in order to greatly reduce interruptions in the process of the printing press, so that the process speed can be increased.

In this case, the procedure according to the invention is such that a transfer process of the ink motif from the tampon to a workpiece is at least partially overlapping in time with a cleaning process of the delivery substrate and preferably within a printing cycle or two consecutive printing cycles at least one cleaning operation of at least one tampon takes place in which the at least one tampon is cleaned by means of a tampon cleaning device, wherein the dispensing substrate (108) relative to the inkjet printer (100), pad printing device (102) and dispensing substrate cleaning device (140 ), wherein the arrangement of the substantially planar delivery substrate (108) in the area of action of the inkjet printer (100) according to step a) at least partially temporally overlapping with the cleaning process and preferably with the cleaning of the delivery substrate (108) in the context of the cleaning process according to step e) of the previous printing cycle takes place.

This can further increase the speed of the digital pad printing machine.

For the printing process, a total of two cleaning devices are provided according to the invention, one for the release substrate and one for the at least one tampon. This means that high process stability, process quality and a high process speed can be guaranteed at any time. However, additional cleaning devices for cleaning the dispensing substrate or the tampon may also be provided.

The dispensing substrate cleaning device is designed such that after a single cleaning operation, even stubborn ink residue can be removed from the dispensing substrate so that a virgin surface can be provided for each new ink motif.

• Fig. 1 zeigt eine schematische Darstellung einer bevorzugten Ausführungsform der neuen Digitaltampondruckvorrichtung 152 der vorliegenden Erfindung, die eine Tampondruckvorrichtung 102, eine Tamponreinigungsvorrichtung 148, eine Inkjetdruckvorrichtung 100, eine Abgabesubstratreinigungsvorrichtung 140 und eine Abgabesubstratvorrichtung 104 umfasst, welche Abgabesubstratvorrichtung 104 nicht bewegt wird.
• Fig. 2 zeigt eine schematische Darstellung einer bevorzugten Ausführungsform der Erfindung, bei der eine Anordnung eines im Wesentlichen ebenen Abgabesubstrates 108 in den Wirkungsbereich einer Inkjetdruckvorrichtung 100 gezeigt wird, wobei die Abgabesubstratvorrichtung 104a relativ zur Tampondruckvorrichtung 102, Inkjetdruckvorrichtung 100 und der Abgabesubstratreinigungsvorrichtung 140 verfahrbar ist.
• Fig. 3 zeigt die eine schematische Darstellung einer bevorzugten Ausführungsform der Erfindung, bei der eine Anordnung des bedruckten Abgabesubstrates 108 in den Wirkungsbereich einer Tampondruckvorrichtung 102 gezeigt wird, wobei die Abgabesubstratvorrichtung 104a relativ zur Tampondruckvorrichtung 102, Inkjetdruckvorrichtung 100 und der Abgabesubstratreinigungsvorrichtung 140 verfahrbar ist.
• Fig. 4 zeigt einen bevorzugten perspektivischen Aufbau der erfinderischen Abgabesubstratvorrichtung 104/104a mit der im Wesentlichen ebenen Fläche des Tinten aufnehmenden Abgabesubstrates 108.

The invention will be described below by way of example with reference to the figures.

• Fig. 1 FIG. 12 is a schematic representation of a preferred embodiment of the new digital ink printing apparatus 152 of the present invention including a pad printing apparatus 102, a pad cleaning apparatus 148, an inkjet printing apparatus 100, a dispenser substrate cleaning apparatus 140, and a printer Dispensing substrate device 104 includes which dispenser substrate device 104 is not moved.
• Fig. 2 11 shows a schematic representation of a preferred embodiment of the invention, in which an arrangement of a substantially flat release substrate 108 is shown in the area of effect of an inkjet printing device 100, wherein the release substrate device 104a is movable relative to the pad printing device 102, inkjet printing device 100 and the release substrate cleaning device 140.
• Fig. 3 11 shows a schematic representation of a preferred embodiment of the invention, in which an arrangement of the printed release substrate 108 is shown in the area of action of a pad printing device 102, wherein the discharge substrate device 104a is movable relative to the pad printing device 102, inkjet printing device 100 and the release substrate cleaning device 140.
• Fig. 4 FIG. 12 shows a preferred perspective construction of the inventive delivery substrate device 104 / 104a with the substantially planar surface of the ink receiving delivery substrate 108.

Fig. 1 shows a schematic representation of a preferred embodiment of the digital ink pad 152 with which the inventive printing method is performed. This embodiment comprises an inkjet printing device 100, a pad printing device 102, a dispensing substrate device 104, a dispenser substrate cleaning device 140 and a pad cleaning device 148. The dispensing substrate 108 assumes a fixed position during the entire printing process, ie it is not moved. The dispensing substrate device 104 with dispensing substrate 108 is mounted on a dispensing substrate holding device 101, for example.

Based on Fig. 1 The inventive steps of the printing process will now be explained by way of example.

In a first method step a), a substantially flat release substrate 108 is arranged in the area of action of an inkjet printer 100. The dispensing substrate 108 assumes a fixed position, i. it is not moved, with the inkjet printer 100 being passed over the delivery substrate 108. It should be noted that in this example, the dispensing substrate 108 assumes a fixed position throughout the printing process.

In a method step b), the ink motif 112 is printed on the delivery substrate 108 by means of the inkjet printer 100.

After completion of the ink motif 112, the release substrate 108 is placed in the area of action of a tampon 118 in a method step c).

In step d), the ink motif 112 is transferred from the delivery substrate 108 to the pad 118 by pressure contact, and in a cleaning process, the delivery substrate 108 is placed in the area of action of a delivery substrate cleaning device 140 and cleaned, and in a transfer process, the ink motif 112 is removed from the pad 118 transferred to the workpiece 142.

In the inventive method, the procedure is such that the transfer process of the ink motif 112 from the tampon 118 to a workpiece 142 is at least partially overlapping in time with the cleaning process of the delivery substrate 108, and preferably at least one cleaning process of at least one tampon takes place within one printing cycle or two subsequent printing cycles 118, wherein the at least one tampon 118 is placed and cleaned in the area of action of the tampon cleaning device 148. With a further method step a), a new printing cycle begins in which the release substrate 108 is again arranged in the area of action of the inkjet printer 100.

Figures 2 and 3 show schematic representations of different process steps of a preferred embodiment of the digital pad printing 152, which is also particularly suitable to perform the inventive printing method. The difference between the dispensing substrate device 104a in FIGS Fig. 2 . 3 and the delivery substrate device 104 in FIG Fig. 1 is that the former is movable and the latter occupies a fixed position, that is not moved.

1. a) Anordnung eines im Wesentlichen ebenen Abgabesubstrates 108 in den Wirkungsbereich eines Inkjetdruckers 100
2. b) Bedrucken des Tintenmotivs 112 auf das Abgabesubstrat 108 mittels des Inkjetdruckers 100
3. c) Anordnung des bedruckten Abgabesubstrates 108 in den Wirkungsbereich eines Tampons 118
4. d) Übertragung des Tintenmotivs 112 auf den Tampon 118
5. e) Reinigungsvorgang des Abgabesubstrates 108 und Übertragungsvorgang des Tintenmotivs 112 vom Tampon 118 auf das Werkstück 142,

wobei die Schritte (a) bis (e) nacheinander erfolgen und der Schritt (a) den Anfang eines weiteren Druckzyklus bildet und wobei während des gesamten Verfahrens die Orientierung des Abgabesubstrates 108 im Wesentlichen beibehalten wird. Erfindungsgemäß wird so vorgegangen, dass Schritt e) derart erfolgt, dass zumindest teilweise zeitlich überlappend mit dem Reinigungsvorgang des Abgabesubstrates 108 der Übertragungsvorgang des Tintenmotivs 112 auf das Werkstück 142 einhergeht und vorzugsweise innerhalb eines Druckzyklus oder zwei aufeinanderfolgender Druckzyklen zumindest ein Reinigungsvorgang zumindest eines Tampons 118 mit einer Tamponreinigungsvorrichtung 148 erfolgt.A method has been described for performing at least one printing cycle with a digital ink printing apparatus 152 for printing a colored ink motif 112 on a workpiece 142, wherein a printing cycle comprises the steps of:

1. a) Arrangement of a substantially flat release substrate 108 in the sphere of action of an inkjet printer 100
2. b) Printing the ink motif 112 on the delivery substrate 108 by means of the inkjet printer 100th
3. c) arrangement of the printed release substrate 108 in the area of action of a tampon 118th
4. d) Transfer of the ink motif 112 to the pad 118
5. e) cleaning operation of the dispensing substrate 108 and transferring the ink motif 112 from the tampon 118 to the workpiece 142,

wherein steps (a) to (e) occur sequentially and step (a) forms the beginning of a further printing cycle and wherein throughout the process the orientation of the dispensing substrate 108 is substantially maintained. According to the invention, step e) takes place in such a way that the transfer process of the ink motif 112 to the workpiece 142 is at least partially overlapping in time with the cleaning process of the delivery substrate 108 and preferably at least one cleaning process of at least one tampon 118 within one printing cycle or two successive printing cycles a tampon cleaning device 148 takes place.

The step e) can take place in such a way that the transfer of the ink motif 112 to the workpiece 142 is at least partially overlapping in time with the cleaning process of the delivery substrate 108 in the context of the transfer process.

The step e) can take place in such a way that the transfer process of the ink motif 112 to the workpiece 142 is at least partially overlapping in time with the cleaning of the delivery substrate 108 as part of the cleaning process.

The step e) can take place in such a way that at least partially overlapping in time with the cleaning of the delivery substrate 108 in the course of the cleaning process Transfer of the ink motif 112 on the workpiece 142 in the context of the transfer process takes place.

The at least one cleaning process, and preferably the at least one cleaning of the at least one tampon 118, can take place at least partially overlapping in time with the cleaning process or the cleaning during the cleaning process of the dispensing substrate 108.

An arrangement of the tampon 118 for cleaning can be carried out such that a rotational movement of the tampon carrier 116 is performed about an axis 114.

The dispensing substrate 108 may occupy a fixed position in the process, i. it is not moved with the inkjet printer 100, the pad printing device 102 and the dispenser substrate cleaning device 140 being moved relative to the dispensing substrate 108.

The dispensing substrate 108, in another preferred embodiment, may be moved relative to the inkjet printer 100, the pad printing device 102, and the dispenser substrate cleaning device 140.

The dispensing substrate 108 may change direction between the two printing devices, inkjet printer 100 and pad printing device 102, before and / or during and / or after a printing process in a periodically sequential transport operation with reciprocating motion 110, with back and / or forth originating movement 110 is printed.

The arrangement of the essentially planar delivery substrate 108 into the effective range of the inkjet printer 100 according to step a) (in the case of the movable delivery substrate device 104a) at least partially overlaps with the cleaning process and preferably with the cleaning of the delivery substrate 108 during the cleaning process according to step e) of FIG previous printing cycle done. This can further increase the speed of the digital pad printing machine.

The digital ink printer includes an inkjet printer 100, a pad printing device 102, a pad cleaning device 148 and a dispensing substrate device 104 / 104a, with the dispensing substrate device 104 / 104a and with an inkjet positioning device, the dispensing substrate 108 and the inkjet printer 100 in a predetermined manner at a constant distance in two dimensions relative to each other and wherein a dispensing substrate cleaning device 140 is provided for cleaning the dispensing substrate 108.

Pad printing device 102 may include a tampon carrier 116 rotatable incrementally about an axis 114 that supports at least one tampon 118.

The tampon carrier 116 can perform an up and down stroke 122 in synchronism with the stepwise rotational movement 120.

In a preferred embodiment of the present invention, the tampon carrier 116 may perform a horizontal reciprocating motion 124 in synchronism with an up and down stroke 122.

In a further preferred embodiment of the present invention, the pad carrier 116 can be moved in all three spatial directions.

The dispensing substrate device 104 may consist of a plate 400, in particular a metal plate on which, for example, a structure 402 is mounted. The dispenser substrate device 104 / 104a has a substantially planar dispensing substrate 108 on the top thereof.

However, if necessary, the substantially planar release substrate 108 may also have a microangled surface to accept certain inks.

The dispensing substrate device 104a may include a guide device that includes at least one guide rail 150, and preferably at least two guide rails 150.

The digital pad printing apparatus may include an endless conveyor 144 having a conveyor 154 on which support means 146 for the workpieces 142 to be printed may be provided. The endless conveying device 144 may for example be arranged parallel below or next to the guiding device.

The driving device for moving the discharge substrate device 104a between the inkjet printing device 100 and the pad printing device 102 may be, for example, a linear motor, a spindle motor, or another motor.

The present invention is not limited to the embodiments of the digital ink pad 152 in FIGS Fig. 1-3 limited to understand. This may include, for example, two dispensing substrate devices 108 and two pad printing devices 102, so that the production capacity may be further increased.

For example, the dispensing substrate cleaning device 140 may include a cleaning belt wiper device that cleans the dispensing substrate 108. The cleaning belt is wetted with a cleaning fluid and is pressed with a pressing device onto the surface of the delivery substrate and guided, for example, by rollers over the delivery substrate.

Surfactants, suitable volatile organic compounds or other solvents in which the inks dissolve may be used as cleaning fluids.

When surfactants are used in an aqueous solution for cleaning, the dispensing substrate 108 may be dried immediately thereafter with a dry tape. Alternatively, a tape which is wetted with a volatile organic solvent can be used, whereby the solvent must evaporate as quickly as possible, so that it does not lead to delays in the printing process. For example, an air blower can be used for rapid and immediate drying of the dispensing substrate 108. The air blower may be integrated in the dispensing substrate cleaning device 140.

The wetted with the cleaning fluid tape and the belt for drying are formed such that preferably no fiber residues remain on the release substrate 108 after cleaning. Should undesired fiber residues nevertheless remain on the delivery substrate 108, these can be removed with an air blower.

Claims (7)

1. Method for carrying out at least one printing cycle with a digital pad printing device (152) for printing a colored ink motif (112) on a workpiece (142), wherein a printing cycle comprises the following steps:

   a) arrangement of an essentially flat delivery substrate (108) into the operating area of an inkjet printer (100)

   b) printing the ink motif (112) on the delivery substrate (108) by means of the inkjet printer (100)

   c) arrangement of the printed delivery substrate (108) into the operating area of a pad (118)

   d) transferring the ink motif (112) onto the pad (118)

   e) cleaning process of the delivery substrate (108) and transferring process of the ink motif (112) from the pad (118) onto a workpiece (142),

   wherein the steps (a) to (e) are carried out successively and step (a) constitutes the beginning of another printing cycle, wherein during the whole process the orientation of the delivery substrate (108) is essentially maintained and the procedure is characterized in that step e) is executed in such a manner that the transferring process of the ink motif (112) onto the workpiece (142) overlaps at least partially in time with the cleaning process of the delivery substrate (108) and, preferably within one printing cycle or two successive printing cycles, at least one cleaning process of at least one pad (118) is carried out by a pad cleaning device (148), wherein the delivery substrate (108) is moved relative to the inkjet printer (100), to the pad printing device (102) and to the cleaning device (140), wherein, according to step a), the arrangement of the essentially flat delivery substrate (108) into the operating area of the inkjet printer (100) overlaps at least partially in time with the cleaning process and preferably with the cleaning of the delivery substrate (108) within the framework of the cleaning process according to step e) of the previous printing cycle.
2. Method according to claim 1 characterized in that step e) is carried out in such a manner that the transfer of the ink motif (112) onto the workpiece (142) overlaps at least partially in time with the cleaning process of the delivery substrate (108) within the framework of the transferring process.
3. Method according to claim 1 or 2 characterized in that step e) is carried out in such a manner that the transferring process of the ink motif (112) onto the workpiece (142) overlaps at least partially in time with the cleaning of the delivery substrate (108) within the framework of the cleaning process.
4. Method according to claim 1 characterized in that step e) is carried out in such a manner that the transfer of the ink motif (112) onto the workpiece (142) within the framework of the transferring process overlaps at least partially in time with the cleaning of the delivery substrate (108) within the framework of the cleaning process.
5. Method according to one of the claims 1 to 4 characterized in that the at least one cleaning process and preferably the at least one cleaning of the at least one pad (118) overlaps at least partially in time with the cleaning process or the cleaning of the delivery substrate (108) within the framework of the cleaning process.
6. Method according to one of the claims 1 to 5 characterized in that the delivery substrate (108) takes a fixed position, i.e. it is not moved, wherein the inkjet printer (100), the pad printing device (102) and the cleaning device (140) for the delivery substrate are moved relative to the delivery substrate (108).
7. Method according to one of the claims 1 to 5 characterized in that the delivery substrate (108) changes the direction between the two printing devices, inkjet printer (100) and pad printing device (102), before and/or during and/or after a printing process in a periodically stepwise transporting process while moving back and forth (110), wherein during the back- and-forth movement the printing process is running.

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