DE102022100892B3 - Machine for producing sheet-shaped printed products - Google Patents

Abstract

A machine according to the invention for the production of sheet-type printed products comprises a sheet feeder, through which sheet-type substrate can be fed to the machine at the entrance of a printing material path leading through the machine, a printing device provided in the printing material path with at least one printing position, through which the sheet-type substrate can be printed at least once on at least one first side and a delivery provided at the end of the substrate path, in which the sheet-shaped substrate that has been printed at least once can be laid out as sheet-shaped printed products in one or more stacks. In addition, a roll unwinder and a web guide path, which opens into the substrate path of the sheet-like substrate, are provided for web-shaped substrates to be unwound on the roll unwinder, via which the substrate to be unwound on the roll winder can be guided upstream of the first or only printing point of the printing device onto the substrate path passing the printing device, with the substrate path downstream being the Printing device a cross-cutting device is provided, through which the web-shaped substrate can be cut crosswise into individual sheets.

Description

The invention relates to a machine for producing sheet-like printed products according to claim 1

the WO 2020/064230 A1 relates to a machine for categorizing substrate sheets with regard to substrate errors and, if applicable, printing errors, in one embodiment of the machine sheet-type substrate being fed on the input side and in another embodiment sheet-type substrate which is printed downstream, cut crosswise into substrate sheets and then further printed in sheet-fed printing units.

through the DE 10 2016 207 398 B3 Among other things, a sheet-fed printing machine is disclosed in which a sheet-shaped substrate can be passed under a printing device having ink-jet print heads on a transport device comprising suction belts and can thereby be printed using the ink-jet process.

the US 2012/0056365 A1 relates to a recording device and for this purpose discloses a device in which sheets stored in a cassette or web-shaped printing material stored on a roll can be printed at a printing point, for example by an inkjet print head. The printed sheets or web sections cut after printing are output in a tray.

through the DE 10 2018 207 245 A1 discloses a sheet-fed printing machine in which sheets transported via transport cylinders or conveyor belts can be printed on at a number of coating points using an inkjet process after passing through a coating device and can be dried by a dryer after each printing point.

In the JP 2007136717A a printer is disclosed, by means of which sheet-shaped or web-shaped paper can be supplied via a guide element first to a surface treatment and then to an inkjet print, optionally via a respective transport path. A cross cutter is provided downstream, by means of which web-shaped paper can be cut into sheets.

Such linear suction tapes with high-precision tape management methods are z. It is used, for example, for the precise transport of substart sheets in sheet-fed printing presses, in order to be able to transport them precisely in register in multi-stage processing. In this case, the sheet-like substrate can be picked up by the belt system on the input side, in addition to other possibilities, for example by pushing the substrate sheet from a preceding conveyor onto the belt system. Not only in the case of the latter handover, but in particular here, the range of substrates that can be processed and/or processed can be limited with regard to the substrate material and/or the substrate thickness that when a deposit or an above-mentioned Sliding of the substrate sheet causes positional errors on the belt system due to a lack of flexural rigidity of the substrate sheets. This is all the more so the thinner the substrate and/or the less rigid the substrate material is.

The object of the invention is to provide a machine and a method for producing sheet-form printed products.

The object is achieved according to the invention by the features of claim 1.

With the solution according to the invention, the range of substrates and/or substrate packaging forms that can be processed or processed can be expanded to form sheet-shaped printed products. In particular, the spectrum can be expanded in terms of substrate thicknesses and/or substrate materials to thinner and/or more pliable substrates without z. B. having to accept an increased rate of misprints caused by registration or register errors. Of particular advantage is a machine in which both substrates provided in sheet form in substrate stacks and substrates provided in web form on rolls can be treated and/or processed. Printed products provided by the machine are to be understood here as both end products and intermediate products that are still to be processed further.

O.g. The possibility of expanding the spectrum of substrate materials to include thinner and/or more pliable substrates is achieved in particular by the fact that the substrate is printed on at least one linear substrate path section with at least one printing device that prints on the substrate, in particular a printing device with particularly high requirements for register and in particular register accuracy as is the case, for example, in multicolored inkjet printing, the printing device happens as a web-shaped substrate. This already avoids problems that can arise when substrate sections are transferred from one conveyor device to another.

A machine according to the invention for producing sheet-shaped printed products comprises a sheet feeder, through which sheet-shaped substrate can be fed to the machine at the entrance of a printing material path leading through the machine, a pressure provided in the printing material path Printing device with at least one printing point, through which the sheet-like substrate can be printed at least once on at least one first side, and a delivery provided at the end of the substrate path, in which the sheets printed at least once can be laid out as printed products in one or more stacks. In addition, a roll unwinder and a web guide path, which opens into the substrate path of the sheet-like substrate, are provided for web-shaped substrates to be unwound on the roll unwinder, via which the substrate to be unwound on the roll unwinder can be guided upstream of the first or only printing point of the printing device onto the substrate path passing the printing device, with the substrate path downstream being the Printing device is provided a cross-cutting device, through which the web-shaped substrate can be cut crosswise into individual sheets.

In a particularly advantageous embodiment, the substrate in web form is or is frictionally engaged at least on a substrate path section that includes the printing device during transport by a conveyor device that conveys the substrate web and/or moves with its active or conveyor means along at least its effective length in the transport direction, in particular by a conveyor device one or more suction belts conveying the substrate web of a suction belt system determining the feed. This offers the particular advantage that a dimensional change in the substrate can be counteracted, which would otherwise e.g. B. caused by moisture-related expansion and / or web tension-related elongation and possibly associated constriction or could be caused.

In principle, the substrate web can be cut transversely downstream of the at least one printing device and fed as a substrate sheet to a delivery device on the output side of the machine without further treatment and/or processing. In a particularly advantageous embodiment, however, at least one further processing device, e.g. B. a further printing device or a so-called. Coating unit, provided by which the substrate, which is now present as a substrate sheet, can be processed at least one more time, in particular can be printed or coated.

In the production of sheet-shaped printed products, in at least one operating situation, web-shaped substrate is unwound from a substrate roll and fed to a substrate path leading through the machine, printed once or multiple times by a printing device located in the substrate path, positively guided by friction on a linear transport path during single or multiple printing, and downstream of the printing device by means of a cross-cutting device into substrate sections, before the substrate sections are finally laid out at the downstream end of the substrate path as sheet-shaped printed products.

An embodiment of the invention is shown in the drawing and is described in more detail below.

An example of the machine mentioned at the outset is shown in the figure in a particularly preferred embodiment, the machine being designed as a sheet-fed printing machine which, as the substrate S to be treated and/or processed; S` in addition to sheet-shaped substrate S optionally web-shaped substrate S` can be fed and as such can be processed, in particular printed, at least at one point in the substrate path.

The machine shown as an example of an advantageous embodiment has in the transport direction T of the arc-shaped Subastrates S, z. B. sheets S, seen first a sheet feeder 01, in which a first stack 02 of sheets is ready for processing. The sheets S are preferably rectangular substrate sheets S made of paper, cardboard or cardboard. Paper, cardboard and cardboard can differ in their respective grammage, i.e. the weight in grams for one square meter of this sheet S. Paper has a basis weight between 30 g/m ² and 150 g/m ² , cardboard has a basis weight between 150 g/m ² and 600 g/m ² and cardboard a basis weight of more than 600 g/m ² . However, each of the sheets S can also be a substrate made of a plastic and/or can be formed as a thin panel. Sheet feeder 01 can also be embodied as a magazine feeder having a plurality of first piles 02 or for carrying out an uninterrupted or non-stop pile change.

A sheet separator 03 provided above the stack 02, e.g. g. as a suction head 03 with several suction cups, successively grips each of the stacked sheets S from above and guides these sheets S, e.g. B. by means of a first rocking gripper 04 and, if necessary, a transfer drum 34 that interacts with the first rocking gripper 04 in a sequence of sheets S separated from one another to the substrate path leading through the machine. B. initially one or more sheets S processing processing devices 05, z. a processing unit 05 for painting and/or a processing unit 05 applying a cold foil and/or at least one processing unit 05 configured as a printing unit.

In the advantageous embodiment presented here, at least one processing unit 05 embodied as a coating unit 05 is provided in the substrate path, with this coating unit 05 processing sheets S being embodied in particular as a primer application unit 05. A primer is applied, for example, to prepare the substrate S for improved acceptance of a print fluid to be applied subsequently, in particular an inkjet ink.

The first coating device 05 can in principle be embodied as an application device 05 of any design, in particular one set up for a full-surface application of coating agent on the surface of the panel. In a preferred embodiment, it is z. B. formed in the manner of a flexographic printing unit and / or has a z. B. designed as an impression cylinder transport cylinder 06 and z. B. a cooperating with this transport cylinder 06 printing cylinder 07 with z. g. an forme roller 08 that is or at least can be thrown onto this printing unit cylinder 07, preferably in the form of an anilox roller, with the optimum dosing of a coating medium to be applied to the surface of the sheets S, e.g. g. primers, at least one doctor blade 09 or a chamber doctor blade system 09 extends in the axial direction of the applicator roller 08. The transport cylinder 06 transports the sheets S held on its lateral surface along a curved transport path, in particular in the shape of an arc of a circle. The first coating device 05 carries the coating medium, e.g. B. a primer, either over the entire surface or only on certain, d. H. at predetermined locations, d. H. partially up.

In the substrate path, downstream of the sheet feeder 01 and, if provided, downstream of the first coating unit 05, the machine comprises a printing unit 13, in particular a non-impact printing unit 13 that operates without a printing form according to a non-impact method, in particular an inkjet method, preferably embodied as an inkjet printing device one or preferably more ink jet print heads 38, through which the substrate S guided in the substrate path; S` can be printed in one color or, preferably, in multiple colors.

The sheets S are conveyed either directly from the sheet feeder 01 or from the subsequent transfer drum 34 or, if provided, from the at least one first coating system 05 or from its transport cylinder 06, directly or indirectly to a conveyor system 25 assigned to the printing system 13, in particular a friction-locked conveyor with the substrate S; S` interacting and/or with its conveying means 16 on at least its effective length lying in the substrate path, i. H. on the substrate S; S` cooperating substrate path section, conveying device 25 moving forward in the transport direction T, through which the substrate S; S' preferably passes one or preferably several printing points of the printing device 13 on a linear movement path and/or forcibly guided along a substrate path section. The conveyor device 25 is preferably designed as a belt conveyor system 25, in particular as a suction belt conveyor 25, with one or more conveying means 16 designed as circulating conveyor belts 16, in particular suction belts 16. Although a frictional connection between conveyor belts 16 and substrate S; In principle, S` can also only be accomplished by means of a non-slip surface finish and/or belt materials. By being designed as a suction belt conveyor 25, the substrate S to be printed can be held by friction; However, S` can be significantly improved, so that a particularly well-defined substrate layer can be guaranteed.

Of particular advantage is the linear substrate path section in the area of the printing device 13 for multiple inkjet printing, since the printing points are not - as is the case, for example. B. when printing against a transport cylinder - must be placed with different inclinations along a circular arc.

The sheets S can be fed or can be fed directly to this conveyor system 25, coming from the sheet feeder 01 or from the at least one first coating system 05, but preferably via an alignment system 15 that is arranged directly upstream of the conveyor system 25. B. is formed by a roller 15 preferably designed as a suction roller 15 . The roller 15 is z. B. with respect. Its axial direction movable and / or stored variable with respect to their inclination to the transport direction T in the frame, not shown here. The alignment device 15 is used to align or correct the position of the substrate S; S` before the transfer to the conveyor 25 can be realized.

Not only, but particularly in the case illustrated here, in which one or more first coating devices 05, in particular at least one primer application device 05, is or are provided in the substrate path upstream of printing device 13, the transfer to conveyor device 25 or to the preferably upstream conveyor roller 15 via one or more upstream transport devices 11; 12 take place. Thus, in the substrate path upstream of the conveyor device 25 or the roller 15 arranged directly upstream, a first transport device 11, e.g. B. in the form of a gripper system 11, in particular a first chain conveyor, and / or a second, in particular a linear transport path having transport device 12, z. B. a belt conveyor system 12 with one or more parallel conveyor belts that transfers the sheets S to the printing device or to the roller 15.

In the exemplary embodiment presented, the first gripper system 11 and the transferring belt conveyor system 12 interact during the transport of the sheet-shaped substrate S to the conveyor device 25 of the non-impact printing device 13 in such a way that the gripper system 11 delivers the sheets S to the belt conveyor system 12 that has the linear transport path , wherein the sheets S are transferred to the non-impact printing device 13 or its conveyor device 25 from the transferring belt conveyor system 12 via the alignment device 15 . The transferring belt conveyor system 12 is preferably designed with at least one circulating endless belt. In an advantageous embodiment, a dryer 14 is provided in the area of gripper system 11 for drying the sheets S that have been coated in coating unit 05. B. is designed as a hot air dryer and / or as a drying by IR radiation or UV radiation dryer.

As already indicated, the illustrated machine is not only a sheet-like substrate S but also a web-like substrate S; S` feedable. For the latter, a roll unwinder 36 is provided upstream of the printing device 13, as well as a web guide path that opens into the substrate path of the sheet-like substrate S, via which substrate S' to be unwound at the roll unwinder 36 upstream of the first or only printing point of the printing device 13 onto the substrate path passing the printing device 13, in particular can be guided onto the conveyor device 25 assigned to the printing device 13 . The web guide path is z. B. in such a way that a web-like substrate S', in particular a substrate web S` to be unwound, is fed from a substrate roll R inserted into the roll unwinder 36 directly or via one or more guide elements (not shown), if necessary, directly onto the conveyor device 25 assigned to the printing device 13, advantageously onto the This conveyor device 25 upstream roller 15 or preferably on the roller 15 upstream transport device 12 can be guided. In the event that the substrate web S' is guided onto or at least over the roller 15, the z. B. in the above manner as a suction roller 15 trained aligning device 15 a direction and / or position correction of the substrate web to be printed S 'is possible.

The roll unwinder 36 is preferably located below the substrate path provided for pure sheet transport, in particular below the transport device 11; 12 arranged. For operation with a substrate web supply on the input side, the web guide path forms a first part of the substrate path, which coincides with this from the point where it joins the part that also affects the sheet transport up to the cross-cutting device and is continued downstream through a part of the substrate path that affects the sheet transport to a delivery 29 , in which the sheets S printed at least once are designed as sheet-shaped printed products P. In an advantageous embodiment, a roll unwinder 36 configured with a plurality of roll positions can be provided as the roll unwinder 36 . In one configuration, this can be equipped with different types of substrate and in another configuration it can be set up for “on-the-fly”, ie uninterrupted, roll changes and equipped with substrate rolls R of the same type.

The non-impact printing device 13 preferably has at least four inkjet print heads 38 or groups of inkjet print heads 38 arranged next to one another, which are offset from one another in the transport direction T and can each be controlled independently of one another, with each of these inkjet print heads 38 or groups being used to create a color separation of a preferably multicolored print image a different printing color on the z. B. the side of the substrate S conveyed along the substrate path that was previously coated in the coating device 05; S' applies. The substrate S; S' is printed by the ink jet print heads 38 while it rests on the conveyor belt or belts 16 of the belt conveyor system 25 assigned to the printing device 13 . In an advantageous development, the printing device 13 comprises, in addition to inkjet printheads 38 that print four primary colors, one or more, e.g. B. three, further in the substrate pad to each other and to the first inkjet printheads 38 provided further inkjet printheads 39 or groups of such inkjet printheads 39 or at least prepared with appropriate mechanical and electrical interfaces holders for one or more, z. B. three such additional inkjet printheads 39 or groups of inkjet printheads 39, through which special or spot colors can be printed.

In the transport direction T of the substrate S; In an advantageous embodiment, S′ is downstream of the non-impact printing device 13 the printed substrate S in sheet or web form; S 'drying dryer 17 arranged, wherein this Dryer 17 also z. B. as a hot air dryer and / or as a drying by IR radiation or by UV radiation dryer 17 is formed. The dryer 17 has a transport device 18 which transports the sheets S or substrate web S′ horizontally in a translatory manner, ie along a linear transport route. In the machine shown as an example, this transport device 18 is designed as a—here third—belt conveyor system 18 . The third belt conveyor system 18 is also preferably designed with at least one circulating endless belt.

The transport device 18 of the second dryer 17 in this example or, in the case of an embodiment without this dryer 17, the conveyor device 25 of the printing device 13 transfers the dried substrate S; S' - possibly after a previous cross-cutting - in an arc to another transport device 19, the z. B. is also designed as a belt conveyor system 19, in particular as a suction belt table 19.

In the substrate path downstream of the printing device 13 or, if provided, of the dryer 17, a cross-cutting device 37 is provided, through which a substrate web S′ guided along the substrate path is or can be cut as arc-shaped substrate sections S into arcs S of the desired length. It can be activated, for example, for operating the machine with a substrate roll R and deactivated for operating with sheets S fed on the input side. Preferably, the cross cutting device 37 is in a transition area from the transport device 25; 18 of the printing device 13 or, if provided, of the dryer 17 to the downstream further belt conveyor system 19, so that the substrate sections S in relation to the upstream transport device 18; 25 increased feed speed of the downstream further belt conveyor system 19 taken by the latter and isolated, d. H. with gaps in between, are or can be discharged.

The sheet S taken from the latter, in particular designed as a suction belt table 19, belt conveyor system 19 - whether already fed in as sheet S on the input side or only cut crosswise to form sheet S - are shingled under, for example, using a shingling device, not shown, and z. g. by means of an oscillating gripper 21 and, if necessary, a transfer drum 33 that interacts with the oscillating gripper 21, directly or via a transfer drum to a transport device 28 of the delivery 29 (not shown), or preferably to at least one further sheet S processing device 22 downstream of the cross-cutting for further processing Submit processing, such as B. at least one coating device 22, such as a sheet-fed coating unit and / or a sheet-fed printing unit, or a device for mechanical processing such. B. a stamping plant.

The further coating device 22 is z. B. designed as a painting device, said coating device 22 a coating agent, z. B. applies a varnish in particular to a print image previously created in the non-impact printing device 13 . The further coating device 22 is z. B. in the manner of a flexographic printing unit and/or has, for example, a z. B. designed as an impression cylinder transport cylinder 23, with this transport cylinder 23 z. B. a printing unit cylinder 24 interacts with an applicator roller 26 that is or at least can be positioned on this printing unit cylinder 24, preferably in the form of an anilox roller, with at least one doctor blade 27 or a chamber doctor blade system 27 extending in the axial direction of the applicator roller 26.

The sheets S are then transported by the transport cylinder 23 of the coating device 22 downstream of the cross-cutting, e.g. B. by means of a delivery device 29 assigned to the transport device 28, z. B. a gripper system 28, in particular a chain conveyor, transported to the delivery 29.

The sheets S treated and/or processed in the machine are preferably deposited in a stack 32 in the delivery 29 by the gripper system 28 . In an advantageous embodiment, in the area of the gripper system 28 assigned to the delivery 29, a dryer 31 is provided for drying the sheets S coated in the further coating device 22. B. as a hot air dryer and / or as a drying by IR radiation or by UV radiation dryer 31 is formed. The delivery 29 can also be designed as a multi-stack delivery having a plurality of stacks 32 .

In a particularly advantageous development, a cooling device, not shown here, is provided in the substrate path between dryer 17 and cross-cutting device 37 . This is particularly the case when the dryer 17 is designed as a thermal dryer, for example with IR radiation and/or a stream of hot air. Such a cooling device can, for. B. include a blower through which a cooled blown air stream on the surface or along the surface - is blown - in particular in the manner of forced convection. The substrate S; S' z. B. by the dryer 17 passing transport system 18 or by this Subsequent further belt conveyor system promoted. Not only but preferably in the latter case, contact cooling of the substrate S; S' be provided in such a way that one or more of the substrate S; S' conveying circulating conveyor belts in the area of this or these deflecting, possibly cooled, rollers and/or in the area of the return strand, ie the part of the respective circulating conveyor belt running back upstream on the way, through the ambient air and/or through a Lead to be cooled or chilled via specially provided cooling plate sections.

In an alternative procedure for the production of sheet-shaped printed products P, the alternative of sheet feeding z. B. not mandatory and can in principle also be omitted in the production of the printed products P.

In an advantageous development, a pull-in aid, e.g. B. can be provided as a webbing belt or webbing chain, through which a leading end of a substrate web S 'from the roll unwinder 36 to the cross cutting device can be conveyed.

The arrangement of an unwinding device 34 in the machine providing sheet-shaped products is of particular advantage when supplying thin and/or pliable substrate material, such as, for example, paper of a low thickness or foil, such as e.g. As plastic film or metal foil can represent.

In order in particular to be able to print substrates with different thicknesses under optimal conditions using the inkjet process, in an advantageous development the distance between the substrate S; S 'leading conveyor 25 and the respective inkjet print head 38 variable. In particular, in the case of a group of several inkjet print heads 38 arranged next to one another transversely to the transport direction T, a supporting element carrying them, e.g. B. a so-called printhead bar, variable in its distance from the top of the stationary conveyor 25. Positioning can be done manually or, advantageously, automatically using path measuring sensors directed at the top side of the substrate.

The cross-cutting device 37 is assigned, for example, to a roller designed in the manner of a positively driven traction roller or arranged directly in front of it.

In an advantageous embodiment, the printing of the print images can provide for the precise imprinting of a mark on the web-shaped substrate S′ and a downstream reading of this mark in order to synchronize the cross-cutting device with the print images lying on the substrate sections S′.

In order to be able to further process and/or lay out substrate sections S of different section lengths downstream of the cross cutter 37, the processing and/or transport devices 22; 19; 28 can be synchronized to section lengths of different lengths, in particular can be operated at a feed speed that differs from the feed speed of the transport device 25 assigned to the printing device. Thus, for example, the printing device 13 with a shortened printing length compared to the z. B. format-fixed downstream processing and / or transport devices 22; 19; 28 smaller feed rates are operated.

The above-described way of producing sheet-shaped printed products from substrate S' provided in web form can also be used without an alternative sheet feed or without the machine part relating solely to sheet transport, in order to produce from substrate rolls R with substrate webs S' of different stiffness and/or Materials to be able to produce a wide variety of sheet-shaped printed products without the risk of increased rejects.

The machine shown as an example and its variants presented in the above description are designed as a digital printing machine, in particular a digital sheet-fed printing machine for use in an industrial printing process, in particular for the production of printed products in mass production.

reference list

01

sheet feeder

02

stack

03

Sheet separator, suction head

04

swing gripper

05

Processing device, coating device, primer application device, application device

06

transport cylinder

07

printing unit cylinder

08

application roller

09

Doctor blade, chamber doctor blade system

10

-

11

Transport device, gripper system

12

Transport device, more, belt conveyor system, more

13

Pressure device, non-impact pressure device

14

dryer

15

Alignment device, roller, suction roller

16

Conveyor, conveyor belt, suction belt

17

dryer

18

Transport device, belt conveyor system

19

Transport device, belt conveyor system, suction belt table

20

-

21

swing gripper

22

Processing device, coating device

23

transport cylinder

24

printing unit cylinder

25

Conveyor, belt conveyor system, suction belt conveyor

26

application roller

27

Doctor blade, chamber doctor blade system

28

Transport device, gripper system

29

display

30

-

31

dryer

32

stack

33

transfer drum

34

transfer drum

35

-

36

roll unwinder

37

cross cutting device

38

inkjet printhead

39

inkjet printhead

R

substrate roll

S

substrate, sheet-like, sheet, substrate sheet, substrate section

S'

Substrate, in web form, substrate web

T

transport direction

P

print product

Claims (10)

Machine for producing sheet-form printed products (P) with a sheet feeder (01) through which sheet-form substrate (S) can be fed to the machine at the entrance of a printing material path leading through the machine, with a printing device (13) provided in the printing material path with one or more printing points, through which the sheet-like substrate (S) can be printed on at least one first side once or several times in succession, and with a delivery (29) provided at the end of the substrate path, in which sheet-like substrate (S) printed once or several times as sheet-like printed products (P) in can be laid out in one or more stacks (32), characterized in that a roll unwinder (36) and a web guide path which opens into the substrate path of the sheet-shaped substrate (S) for web-shaped substrate (S`) to be unwound on the roll unwinder (36) are provided, via which substrate (S`) to be unwound on the roll unwinder (36) upstream of the transport direction ung (T) considered the first or only printing point of the printing device (13) can be guided onto the substrate path passing the printing device (13), and that a cross-cutting device (37) is provided in the substrate path downstream of the printing device (13), through which the web-shaped substrate ( S`) can be cut crosswise into individual sheets (S), characterized in that in the substrate path between the cross-cutting device (37) and the delivery (29) there is a processing device (22) with an upstream transfer drum (33) and/or an upstream oscillating gripper (21) and/or an upstream suction belt table (19). machine after claim 1 , characterized in that the pressure device (13) is assigned a conveyor device (25) comprising one or more conveyor means (16), which frictionally engages with the substrate (S; S') to be conveyed and/or interacts with the conveyor means or means ( 16) on at least its effective length in the substrate path in the transport direction (T), and/or by means of which the web-shaped substrate (S`) passes the pressure point or pressure points of the printing device (13) on a linear movement path and/or forcibly guided. machine after claim 2 , characterized in that the conveyor device (25) is designed as a suction belt conveyor (25) with a linear movement path in the region of the one or more printing points of the printing device (13). machine after claim 2 or 3 , characterized in that the web guide path opens into the substrate path for the sheet-like substrate (S) upstream of the conveyor device (25). machine after claim 2 , 3 or 4 , characterized in that upstream of the conveyor device (25) there is an alignment device (15) by means of which the direction and/or position of the substrate (S; S') conveyed via the substrate path can be corrected before it runs onto the conveyor device (25). is. machine after claim 5 , characterized in that the web guide path opens into the substrate path for the sheet-like substrate (S) at the inlet or upstream of the alignment device (15). machine after claim 1 , 2 , 3 , 4 , 5 or 6 , characterized in that the roll unwinder (36) is arranged below the substrate path provided purely for sheet transport. machine after claim 1 , 2 , 3 , 4 , 5 , 6 or 7 , characterized in that a dryer (17) and/or a cooling device is provided in the substrate path between the printing device (13) and the cross-cutting device (37). machine after claim 1 , 2 , 3 , 4 , 5 , 6 , 7 or 8th , characterized in that a processing device (05) in the manner of a coating device (05) is provided in the substrate path upstream of the printing device (13). machine after claim 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8th or 9 , characterized in that the printing device (13) is designed as a non-impact printing device (13) and/or a plurality of inkjet printheads (38; 39) arranged one behind the other in the transport direction (T) or groups of inkjet printheads ( 38; 39).

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