DE102022105615A1 - Sheet processing machine and method for marking and tracking sheets - Google Patents

Abstract

The invention relates to a sheet processing machine with a sheet feeder and a control station, with at least one formless printing device which can be arranged above a feeder table and a sensor arranged below the feeder table for determining the presence of at least one sheet on the feeder table being provided in the sheet feeder. An independent control device that can be connected at least temporarily to the control center and is connected to at least the sensor is designed to control the printing device without a printing form as a function of sensor signals from the sensor. The invention also relates to a method for identifying and tracking sheets.

Description

The invention relates to a sheet processing machine with a sheet feeder and a control station and a method for identifying and tracking sheets with a printing device without a printing form in a sheet feeder of a sheet processing machine.

From the DE 203 03 574 U1 an image inspection system for a printing press is known, in which an image recording device is followed by a printing device which can be controlled in accordance with the image signals and through which markings can be generated at designated locations on the printing material. This solution is unspecified in terms of sensor technology.

From the DE 10 2006 002 302 A1 a sheet-fed printing machine is known, with a feeder for introducing printed sheets to be printed into the sheet-fed printing machine, with at least one printing unit and/or varnishing unit for printing the printed sheets with a static printed image that is identical for all printed sheets, with a delivery arm for discharging printed sheets from the sheet-fed printing machine, and with at least one formless printing device integrated into the sheet-fed printing machine for printing the printed sheets with a particularly dynamic, variable printed image, the or each formless printing device being integrated into the sheet-fed printing machine in the area of the feeder. This solution requires sensors to detect the front and side edges.

From the DE 10 2015 116 030 A1 a device for coding printed sheets in a sheet-fed printing machine is known, with at least one printing device without printing form integrated into the sheet-fed printing machine, which can be arranged in the area of a sheet feed device at different positions for printing the printed sheets with a static or variable print image from sheet to sheet, whereby the or each printing formless printing device is arranged in a scale feeder processing a shingled stream of printed sheets above the top or below the underside of a conveyor table transporting the shingled stream, and a control device is provided which is equipped with a sensor for detecting the presence of printed sheets opposite the printing formless printing device and is connected to a sensor for detecting a production time for controlling the printing device without printing form. This solution requires two sensors on the table for sheet presence and triggers for each sheet leading edge. Rotary encoder signals on the feed belt or feeder table and in the machine are only processed to control the numbering system.

From the DE 10 2018 219 734 A1 an improved sheet guide in the feeder is known, with a sheet feed device having an inkjet print head for numbering printed sheets to be printed with a control device in the form of a computer, the control device of the inkjet print head being set up so that it is the inkjet print head when the inkjet print head is ready to run The signal for numbering the printed sheet to be printed is issued depending on a machine angle of the sheet-fed printing machine specified by the control computer of the sheet-fed printing machine. This solution does not require sensors on the table. The encoder signal is evaluated on the feeding cylinder (i.e. after the system) by the machine control.

The invention is based on the object of creating an alternative sheet processing machine with a sheet feeder and a control station or an alternative method for identifying and tracking sheets. In particular, a system should be created for the secure identification of printed sheets and tracking after the printing process.

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

The advantages that can be achieved with the invention are, in particular, that an alternative sheet processing machine with a sheet feeder and a control station or an alternative method for identifying and tracking sheets is created. In particular, a system is created for the secure identification of printed sheets and tracking after the printing process.

Preferably, a printed sheet can be selected from an inspection protocol in conjunction with an inline inspection system via its ID (identification or unique identifier) and physically found in the stack or in the further processing process via a matching ID in the form of an identification feature on the printed sheet, for example via a sensor or even visually by a person.

Advantageously, continuous tracking of each numbered sheet and synchronization of its ID with the inspection protocol can make additional recording and evaluation (e.g. OCR or code reader) of the numbering unnecessary. In particular, a printed number (ID) and a corresponding number (ID) in the inspection log match each inspi decorated arch. An improved evaluation of the markings, numbering or barcodes is made possible in further processing, e.g. B. automated removal based on the inspection protocol.

More preferably, parameterization of an inkjet printer, for example, can advantageously not be influenced by possibly unqualified interventions on the control device. Sensors are also particularly advantageously saved and printing on a table sheet or a suction belt on the feeder table or belt table is prevented.

Alternatively, the printing process, in particular the marking or numbering, could be monitored by means of sensor- or camera-based checking or image processing following the marking or numbering process.

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

• 1 eine Bogendruckmaschine mit einem Bogenanleger;
• 2 eine vergrößerte Ansicht eines Bogenanlegers in Seitenansicht;
• 3 eine perspektivische Ansicht eines Anlegertisches eines Bogenanlegers;
• 4 eine perspektivische Detailansicht des Anlegertisches;
• 5 eine perspektivische Detailansicht des Anlegertisches von unten.

Show it:

• 1 a sheet-fed printing machine with a sheet feeder;
• 2 an enlarged side view of a sheet feeder;
• 3 a perspective view of a sheet feeder table;
• 4 a perspective detailed view of the investor table;
• 5 a perspective detailed view of the investor table from below.

The 1 shows a sheet-processing machine for processing sheets or panels, for example a printing press 01 or sheet-fed printing machine, in particular a sheet-fed offset rotary printing machine, preferably in an aggregate and series design. The printing machine 01 is designed or equipped in particular for printing sheet-shaped printing materials, for example paper, cardboard or even sheet metal. The printing press 01 contains a sheet feeder 02 for placing sheets to be processed, in particular as a stack, a sheet system 03, one or more printing units 04, for example a turning device 05, possibly one or more coating units 06 and a sheet delivery 07 for depositing the processed sheets, in particular into one Stack. Alternatively, the printing press 01 can also have any other number of works or any special equipment and/or can also be designed as a face printing machine.

For processing, sheets are removed in the sheet feeder 02, in particular from a supplied stack, and transported in the transport direction T in the direction of the sheet system 03. In particular, a sheet stream of sheets partially lying one above the other is formed before the sheets are individually accelerated in the sheet system 03 and fed here to the first printing unit 04 at machine speed. In the printing units 04, possibly the turning device 05 and the varnishing unit 06, the sheets are clamped by sheet guide cylinders at the front edge and transferred in the gripper close to the sheet delivery 07 and are processed, in particular printed and / or varnished. The sheet delivery 07 preferably contains a chain conveyor system, which takes the processed sheets in particular from a sheet guide cylinder of the last coating unit 06 here and transports them to a stack for storage.

In particular, impression cylinders 08 are arranged in the printing units 04, which clamp the front edges of the sheets using gripper systems and transport them during their rotation. In this case, a printing gap is formed in a respective printing unit 04 by the impression cylinder 08 with an adjacent blanket cylinder 09, through which the sheets are transported. A blanket cylinder 09 carries a rubber blanket and is further functionally connected to a plate cylinder 10. A plate cylinder 10 carries a printing plate, which is inked with printing ink during a printing process by inking rollers (not shown) of an inking unit. The machine, in particular printing machine 01, has a machine control for coordinated control of the individual parts. The machine, in particular printing press 01, can be operated via a control station 11, with the control station 11 in particular ensuring access to the machine control. Furthermore, an inline quality control device, which is preferably linked to the machine control, is provided, which checks or inspects the sheets. An inline inspection system, for example one or more cameras, is preferably used in front of the sheet delivery 07 and possibly in front of the turning device 05.

The 2 shows an enlarged view of a sheet feeder 02 of a sheet processing machine, for example the printing press 01 described above, in a side view. The sheet feeder 02 has a frame 12 and a stack lifting device held by the frame 12, which raises or lowers a stack support plate 14 in particular by means of lifting chains 13. A pallet 15 is preferably arranged on the stack support plate 14, on which a stack of sheets 16 to be processed, sheets placed individually one on top of the other, is arranged. By means of the Pallet 15, the stack of sheets 16 can be placed on the stack support plate 14, for example manually or automatically using a logistics system. The stack of sheets 16 is usually aligned at a front stop 17 according to the front edge pointing in the transport direction T. The sheet feeder 02 could also be equipped with a non-stop device for the uninterrupted supply of sheet stacks 16 on non-stop system pallets for the machine, in particular printing machine 01.

The sheet feeder 02 includes a sheet separator 18, which is held in particular by the upper frame 12, for separating and transporting the top sheets of the sheet stack 16 in the transport direction T in machine cycles. Both the sheet feeder 02 and the sheet separator 18 contain various working elements for realizing or supporting the separation and/or or transporting the sheets. In particular, the sheet separator 18 is assigned suction cups 19 and transport suction cups 20. The separating suction cups 19 can each lift a top sheet of the sheet stack 16 by means of suction cups and transfer it to the transport suction cups 20, which also take over the respective sheet from the separating suction cups 19 by means of suction cups and then transport it in the transport direction T. To do this, the transport suction cups 20 carry out a predominantly vertical intermittent movement in and against the transport direction T, whereby they push a fixed sheet in the transport direction T with its front edge under the rear edge of the previous sheet and release it before a reversal movement.

To support sheet separation, at least one stylus foot 21 can be provided, which can be moved in particular between a holding position that presses on the stack of sheets 16 along the rear edge and a rest position located outside the stack outline. In the rest position, the stylus foot 21 can be raised relative to the holding position and moved behind the rear edge of the sheet stack 16 counter to the transport direction T. In the holding position, the at least one stylus foot 21 is placed when the top sheet of the sheet stack 16 has been lifted along the rear edge by the suction cups 19 in order to prevent underlying sheets of the sheet stack 16 from being stirred up when at least one is behind the rear Edge preferably at the level of the top of the sheet stack 16 arranged trailing edge blower 22 blows air in the transport direction T into the open gap between the sheet lifted by the separating suction devices 19 and the remaining sheet stack 16.

The sheet feeder 02 preferably further comprises a sheet flap 23, which is also pivotally held and displaced by a flap shaft 24 at machine cycles, i.e. for each individual sheet transported. The sheet flap 23 is arranged on the front edge of the sheet stack 16, for example in an extension of the front stop 17 above the front stop 17. To release the transport path for the sheet transported by the transport suction cups 20, the sheet flap 23 is moved from a vertical position to an at least approximately horizontal position, so that the transported sheet can be moved in the transport direction T over the sheet flap 23. To support the separation or transport of the sheets, first, for example, fan-shaped side edge blowers 29 and / or second, for example, side edge blowers 30, which have stop surfaces, can be provided on the lateral edge of the sheet stack 16, preferably in the area of the upper edge of the sheet stack 16, which emit a jet of blown air transversely to the transport direction T point at the top edge of the stack of sheets 16.

Furthermore, the sheet feeder 02 includes a feeder table 25 for transporting the sheets lying underneath, i.e. H. the bow squadron to be transported. The feeder table 25 can be designed as a belt table, for example with at least a first roller and a second roller around which at least one suction belt 32 is guided. The first roller, which is arranged downstream of the sheet flap 23, can be assigned one or more clock rollers, not shown, which are preferably displaced vertically in line with the machine cycle and thus ensure that the transported sheets rest on the feeder table 25 or on the suction belt 32. From the feeder table 25, the sheet stream or the sheet relay that forms is transported to the feeder table 26 of the sheet system 03, which has at least one sheet arrival sensor, and there it is fed to a feeder drum 28 in an accelerated manner at a feed edge or feed line, for example by a swing gripper system 27, which feeds the sheet here to the impression cylinder 08 of the sheet feeder first printing unit 04. The oscillating gripper system 27 also carries out a displacement in line with the machine cycle, i.e. H. the swing gripper system 27 undergoes a complete back and forth movement for each individual sheet, so that the machine cycle is a cyclical repetition of the movement of the components moved in machine cycles. A machine cycle or a cycle therefore corresponds to exactly one revolution of a single-speed shaft or a single-sized cylinder, for example the feed drum 28, of the machine, in particular printing machine 01.

The 3 shows a perspective view of a feeder table 25, in particular as described above, seen against the transport direction T of the sheets. The feeder table 25 points here since table plates 31, between which a suction belt 32 guided in the transport direction T over one or more suction boxes is arranged endlessly. The suction belt 32 runs around several deflection rollers and is driven by a drive. Above the feeder table 25 there is a crossbar 33 oriented transversely to the transport direction T of the sheets, to which at least one printing device without a printing form can be assigned or is assigned. This printing device without a printing form can preferably be arranged continuously in different positions on the crossbar 33 with respect to the machine width. This positioning can be carried out manually or automatically using an appropriate drive. In principle, various devices can be used as a printing device without a printing form. For example, one or more print heads, such as inkjet or ink print heads, could be used.

As a printing device without a printing form, at least one inkjet print head 34 is preferably arranged on the crossbar 33 above the feeder table 25, which can be continuously adjusted manually or by motor in the format width direction. The printing device without a printing form, in particular the inkjet print head 34, has its own control device, which is designed to control it and is preferably at least temporarily connectable to the control center 11 or is in communication. The control unit is designed in particular as an independent or separate component, i.e. H. that the control device can control the printing device without printing form, in particular the inkjet print head 34, independently of the machine control. The control device is preferably further connected to an independent or separate control panel for the printing device without printing form, in particular the inkjet print head 34. This separate control panel can preferably be arranged in the sheet feeder 02, for example in the immediate vicinity of the control device or the printing device without printing form, in particular the inkjet print head 34. Configuration changes for the printing plateless printing device, in particular the inkjet print head 34, can be fed to the control unit via this control panel, especially during the ongoing job.

The feeder table 25 can have at least one and preferably several hold-down devices 35, such as drag plates from above, on the sheet relay, preferably in the area outside the printing corridor(s) to reduce the formation of waves in particularly stiff printing materials. Such waves would otherwise lead to a change in the distance between the print head and the sheet stack and thus to a distortion of the printed image. Hold-down devices 35 are preferably arranged on the horizontally inclined surface of the feeding table 25 in the transport direction T after the so-called table bend, in particular the first or front belt roller, which preferably interacts with the clock rollers.

The 4 shows a perspective detailed view of the feeder table 25 from the other side. On the drive side of the machine, in particular printing machine 01, a drive is provided for driving a roller which continuously drives the suction belt 32 and which has a rotary angle sensor 36. This rotary angle encoder 36 is in particular directly connected to the control unit of the printing device without a printing form, in particular the inkjet print head 34. The rotation angle sensor 36 thus supplies rotation angle signals to the preferably single-speed belt roller of the feeder table 25, i.e. before the sheet system 03. The rotation angle sensor 36 of the belt roller of the feeder table 25 is further preferably used simultaneously for the synchronization of the printing process of the printing plateless printing device, in particular the inkjet print head 34, on the non-uniform movement of the suction belt 32 and thus the sheet on the feeder table 25 is used.

The 5 shows a perspective detailed view of the feeder table 25 from below. The presence of a sheet relay under the print head, in particular the inkjet print head 34, is queried by means of a position sensor 37, for example a reflection light scanner, which is arranged under the table plate 31 and detects the scale on the feeder table 25 through a recess. The recess can be designed as an opening or window. The position sensor 37 is - seen in the running direction or transport direction T of the sheet relay - installed at a fixed and as short a distance as possible from the printing position or from the inkjet print head 34. This position sensor 37 further detects the front edge of the sheet relay, i.e. the front edge of the first sheet of the relay, and is preferably also directly connected to the control device of the printing plateless printing device, in particular the inkjet printer, for transmitting the corresponding sensor signal to the control device. The control device can thus control the printing device without a printing form, in particular the inkjet print head 34, depending on the sensor signals from the position sensor 37.

How it works: The printing device without a printing form, in particular the inkjet print head 34, preferably provides complete identification, for example alphanumeric numbering, with barcodes or with 2D barcodes, of all printed sheets that are inspected by the inline inspection system are checked, which stores the inspection result in protocol form, for example saved or printed out as a data record, in the scale stream on the feeder table 25. In particular, the area of a respective sheet that is not scaled, ie in front of the trailing edge, is marked. The trigger for each marking process or numbering process is generated virtually in the control unit of the plateless printing device, in particular in the control of the inkjet printer, for each path length of the suction belt 32, which corresponds to an integer (0... n) multiple of the overlap distance of the sheet stack. The current path length is determined as a relative value to the front edge of the sheet relay detected by the position sensor 37 by evaluating the rotation angle signal of the rotation angle sensor 36 on a single-speed belt roller of the feed table 25, i.e. in front of the sheet system 03. If the position sensor 37 for detecting the sheet relay during or after a printing process reports that there is currently no sheet under the print head, in particular the inkjet print head 34, especially taking into account the distance between the position sensor 37 and the print head in the direction of travel of the sheet relay, then the printing process will be stopped immediately.

Real-time control with synchronization of the system times in the inline inspection system and in the machine control can take place, with a refresh of the synchronization of the system times preferably being carried out cyclically. Each sheet is assigned an internal time stamp, the associated machine angle and/or one or more counters, for example a printed ID, a total sheet counter or an order sheet counter, particularly in both systems. This allows continuous virtual tracking of each numbered sheet as it travels into and through the machine, in particular printing machine 01, into the delivery stack in a real-time machine control. When the sheets enter, this is done by evaluating the rotation angle sensor signals of the rotation angle sensor 36 of the belt roller of the feeder table 25 up to the contact line of the feed table 26 of the sheet system 03, the distance of the position sensor 37 for the sheet relay up to a sheet arrival sensor of the feed table 26 of the sheet system 03 of the machine, in particular printing press 01, is known. When moving through the machine, in particular printing press 01, an evaluation of rotation angle signals from a usual machine encoder takes place with a known sheet path length from the sheet arrival sensor in the sheet system 03 to the sheet arrival in the sheet delivery 07. Preferably after the sheet has been deposited, in particular on the delivery stack, the sheet information is from the Real-time control is preferably transmitted as a data packet to the control center 11, the inline inspection system and / or a higher-level management information system (MIS) such as Logotronic or production planning system (PPS), which is particularly connected to the machine control.

In particular, the inline inspection system then assigns the inspection result to the individual identification or ID generated by the printing formless printing device, in particular the inkjet print head 34, in a display and/or in the protocol, with precision on the sheet. Consecutive numbering is possible in this way even after the first sheets have been removed from the sheet relay on the feeder table 25 or feeder table 26, which is common in sheet guiding problems in the sheet feeder 03, and also after stoppers.

The control center 11 of the machine, in particular printing machine 01, and the control unit of the plateless printing device, in particular of the inkjet printer, are at least temporarily connected to one another, preferably coupled to one another via an Ethernet connection. In particular, this enables communication between the control center 11 and the independent control device. This means that a data set for the basic configuration of the printing device without a printing form, in particular of the inkjet printer, for example an operating mode, parameters in particular of the rotation angle encoder 36 or the position sensor 37, a font definition and / or a numbering scheme, in particular at every restart, job start or production start of the machine, in particular Printing machine 01, be transferred again to the control unit. The data record transmitted from the control center 11 to the control device can overwrite a data record that may be present in the control device and is therefore used by the control device to control the printing device without a printing form, in particular the inkjet print head 34. Any incorrect configuration changes via the control panel of the plateless printing device, in particular the inkjet printer, are therefore excluded as a source of error.

An operating selection by the operator, preferably at the control center 11, can include the activation or deactivation of numbering, a y position of the number on the sheet relative to the front edge, with appropriate motor adjustability, an x position relative to the side edge and / or a start number for the next numbering cycle, preferably for the next sheet season. The distance of the y position from the control station 11 can be added as an offset to the virtual trigger, ie to the reference position of the leading edge of the sheet, for the marking process or numbering process and the actual one Determine the starting position of the printing of the printing plateless printing device, in particular of the inkjet print head 34, in relation to the respective leading edge of the sheet. This data is preferably transferred again to the control unit of the printing formless printing device, in particular the inkjet print head 34, as a supplementary configuration of the printing formeless printing device, in particular the inkjet printer, each time the job starts or the production starts.

Furthermore, a query of the operating status of the printing device without a printing form, in particular of the inkjet print head 34, and/or the generation of status or error messages, preferably including an entry in an error list on the control center 11, can take place. The control center 11 of the machine, in particular printing press 01, can preferably release the marking process or numbering process if all requirements are met, in particular numbering is selected in the control center 11, the inline inspection system is active and logging is active. The printing process of the plateless printing device, in particular the inkjet print head 34, then preferably starts AND-linked with the sheet presence, which is detected by the position sensor 37 connected directly to the control device, and the internal trigger, which is derived from the rotary angle sensor 36 connected directly to the control device.

Reference symbol list

01

printing press

02

Sheet feeder

03

Arch facility

04

Printing unit

05

Turning device

06

Lacquerwork

07

Sheet delivery

08

Impression cylinder

09

Blanket cylinder

10

Plate cylinder

11

control center

12

frame

13

lifting chains

14

Stack support plate

15

palette

16

Sheet stack

17

Front stop

18

Sheet separator

19

Separation vacuum cleaner

20

Transport vacuum cleaner

21

stylus foot

22

Trailing edge blower

23

Arch flap

24

flap shaft

25

Investor table

26

Berth table

27

Swing gripper

28

mooring drum

29

Side edge blower

30

Side edge blower

31

table sheet

32

Suction tape

33

Crossbar

34

Inkjet print head

35

Hold-down device

36

Rotary angle encoder

37

Position sensor

T

Transport direction

QUOTES INCLUDED IN THE DESCRIPTION

This list of documents listed by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 20303574 U1 [0002]
• DE 102006002302 A1 [0003]
• DE 102015116030 A1 [0004]
• DE 102018219734 A1 [0005]

Claims (15)

Sheet processing machine (01) with a sheet feeder (02) and a control station (11), wherein in the sheet feeder (02) there is at least one formless printing device (34) which can be arranged above a feeder table (25) and a sensor (37) arranged below the feeder table (25). ) is provided for determining the presence of at least one sheet on the feeder table (25), characterized in that an independent control device which can be at least temporarily connected to the control center (11) and is connected to at least the sensor (37) for controlling the printing device (34 ) is designed depending on sensor signals from the sensor (37). Sheet processing machine Claim 1 , wherein the sensor (37) arranged below the feeder table (25) is designed to determine the front edge of a sheet relay formed from sub-scaled sheets transported on the feeder table (25). Sheet processing machine Claim 1 or 2 , wherein the control device for controlling the printing device (34) without a printing form is further connected directly to a rotary angle sensor (36), in particular a drive for a suction belt (32) of the feeder table (25) in the sheet feeder (02). Sheet processing machine Claim 1 , 2 or 3 , whereby one or more hold-down devices (35) are assigned to the feeder table (25), particularly in the area outside of printing corridors, to reduce the formation of waves in stiff printing materials of the sheet relay formed from under-scaled sheets. Sheet processing machine Claim 1 , 2 , 3 or 4 , wherein the machine (01) has a machine control and an inline quality control device linked to the machine control, the machine control being further connected to the control center (11) and a higher-level management information system. Sheet processing machine Claim 1 , 2 , 3 , 4 or 5 , wherein the control device is connected to an independent control panel of the printing plateless printing device (34). Sheet processing machine Claim 1 , 2 , 3 , 4 , 5 or 6 , wherein the control center (11) can be connected to the control device in such a way that a data set for the basic configuration of the printing formless printing device (34), in particular for the operating mode, sensor parameters, font definition and / or numbering scheme, is created every time the machine is restarted, job started and / or production start ( 01) can be transferred to the control unit. Sheet processing machine Claim 1 , 2 , 3 , 4 , 5 , 6 or 7 , wherein one or the data set transmitted from the control center (11) to the control device is used by the control device to control the printing device (34) without a printing form. Method for marking and tracking sheets with a printing plateless printing device (34) in a sheet feeder (02) of a sheet processing machine (01) in particular according to one of the preceding claims, wherein in the sheet feeder (02) there is at least one printing plateless printing device arranged above a feeder table (25). (34) and a sensor (37) arranged below the feeder table (25) is provided for determining the presence of at least one sheet on the feeder table (25), and a control device controls the printing device (34) without a printing form depending on sensor signals from the sensor (37). controlled, characterized in that the sensor (37) arranged below the feeder table (25) detects the front edge of the sheet relay formed from sub-scaled sheets transported on the feeder table (25) and transmits a corresponding sensor signal to the control unit. Procedure according to Claim 9 , wherein the control device further controls the printing plateless printing device (34) depending on signals from a rotary angle sensor (36) connected in particular to a drive for a suction belt (32) of the feeder table (25) in the sheet feeder (02). Procedure according to Claim 9 or 10 , whereby configuration changes for the printing formless printing device (34) are fed to the control unit via an independent control panel. Procedure according to Claim 9 , 10 or 11 , wherein the control device for controlling the printing formless printing device (34) communicates at least temporarily with a control center (11) of the machine (01), such that a data set for the basic configuration of the printing formless printing device (34), in particular regarding the operating mode, sensor parameters, font definition and / or numbering scheme, is transferred to the control unit with every restart, job start and/or production start of the machine (01). Procedure according to Claim 9 , 10 , 11 or 12 , whereby one or more of the data sets transmitted from the control center (11) to the control unit are sent from the control unit advises to be used to control the printing device (34) without a printing form. Procedure according to Claim 9 , 10 , 11 , 12 or 13 , whereby an inline inspection system assigns an inspection result to the individual marking in a display and/or in a report. Procedure according to Claim 9 , 10 , 11 , 12 , 13 or 14 , wherein information about a marked sheet, in particular after it has been deposited in a sheet delivery (07), is transmitted as a data packet to one or the control center (11), an inline inspection system and / or a higher-level management information system.

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