DE102005058768B4 - Method for operating a printing machine - Google Patents

Abstract

Method for operating a printing machine, in particular a sheet-fed printing press (10), with at least one coating unit (13, 35, 38) and / or at least one flexographic printing unit and / or at least one gumming unit and optionally one or more offset printing units (12), wherein the or each coating unit (13, 35, 38) and / or the or each flexographic printing unit and / or the or each gumming unit comprises a container (17, 52) in which lacquer or flexographic ink or glue is kept ready, the lacquer or the flexographic printing ink or the glue is applied via the respective coating unit or flexographic printing unit or gumming unit to a printing material to be printed on the printing press, in particular to printed sheets to be printed, characterized in that a) during the printing operation the filling level of the container (17, 52) of the or each coating unit (13, 35, 38) and / or the or each flexographic printing unit and / or the or each gumming unit is detected, b) during the printing operation d c) from the detected level of the or each container (17, 52) and from the recorded number of printed copies which during printing operation in the respective coating unit (13, 35 , 38) or flexographic printing unit or gumming unit the quantity of varnish or flexographic ink or glue consumed per printed copy is determined.

Description

The invention relates to a method for operating a printing machine, in particular a sheet-fed printing press, according to the preamble of claim 1.

Printing machines are used to print on substrates, in the first place ink and / or paint is applied to a substrate. Thus, in practice printing presses are known which have a plurality of offset printing units, wherein in the area of each offset printing unit, a partial printing image in a special offset printing ink is applied to the printing substrate. Likewise, printing presses are known, which in addition to the offset printing units or instead of the offset printing units include flexographic printing units and / or coating units and / or Gummierwerke, wherein in the or each coating unit a paint in the or each flexo printing unit a flexographic ink and In the or each gumming a glue or adhesive is applied to the substrate. The present invention relates to a method for operating a printing press, which has at least one coating unit and / or at least one flexographic printing unit and / or at least one gumming unit.

In printing presses with at least one coating unit and / or at least one flexographic printing unit and / or at least one gumming unit, the demands on the automation of the printing press, in particular automatic logging of printing process-relevant parameters, such as, for example, increase. As the adjusting during printing consumption of paint or flexographic ink or glue. The present invention proposes a method for operating a printing machine, which takes into account this increasing automation requirement.

Out DE 100 09 664 A1 For example, a method and apparatus for feeding ink into ink boxes with ink dosing elements of printing machines is known. The color requirement of color zone groups is supplied to a computer which, in accordance with local color requirements, issues commands for supplying color zone groups to a movable color dispenser. For a color zone group with the lowest color requirement, no more ink until the end of the job. Remaining dosing process is initiated with changed dosing cycles. In this case, the remaining ink fountain groups color is supplied and the ink supply of the selected color zone group is set.

From the DE 101 59 387 A1 is a packaging printing machine with built-in automatic comparison function between print and target image is known, which has an inking unit and in which the printed image is adjusted by the supply of suitable color and amount of color after a target image. Devices capture print images on the substrate web and supply measured values to a control and regulating unit. A control unit performs a comparison between the digitized and the control unit ( 8th ) stored nominal shape of the printed image. Comparative values are passed on or reused.

From the DE 195 12 727 A1 For example, an ink fountain in the inking unit of printing machines with a device for filling ink is known. The device is mounted on a carriage in the longitudinal direction of the ink fountain to move back and forth. Means are provided for monitoring the level of the ink in the ink fountain. On the carriage, a sensor is mounted, which is arranged in the direction of movement in front of the means for filling the ink and controls the ink supply at too low level.

Out DE 195 14 566 A1 is a device for measuring the level of a container by a height-adjustable depending on the liquid level sensor known. The sensor is connected to a position transducer and is pressurized with compressed air directed at the liquid level. The sensor floats at a defined distance above the liquid level.

From the GB 1 501 740 For example, a liquid level control device is known. The device cooperates with a container in which a movable probe monitors the filling with a supplied by a feed pump hot melt adhesive.

On this basis, the present invention is based on the problem of providing a novel method for operating a printing machine, in particular a sheet-fed printing press.

This problem is solved by a method according to claim 1. According to the invention, the level of the container of the or each coating unit and / or the or each flexographic printing unit and / or the or each gumming unit is detected during the printing operation. Furthermore, the number of copies printed in the printing machine is detected during the printing operation. From the detected fill level of the or each container and from the recorded number of printed copies, the amount of paint or flexographic printing ink or glue consumed during the printing operation in the respective coating unit or flexographic printing unit or gumming unit is determined.

With the present invention, it is proposed for the first time during operation of a printing press and thus during the printing operation automatically involved in each of the pressure coating unit and / or involved in each of the flexo printing unit and / or in each of the pressure involved gumming ever Hard copy used to determine the amount of paint or flexographic ink, in particular for logging purposes. With the present invention, therefore, an in-line consumption measurement of paint or flexographic ink or glue for participating in the printing coating units or for participating in the printing flexographic printing units or for participating in the printing Gummierwerke is created. As a result, the degree of automation of printing machines is increased, in particular when the above inline consumption measurement for paint or flexographic ink or glue is used to the level of the container of the or each coating unit and / or the or each flexographic printing unit and / or the or each gumming unit in which paint or flexographic ink or glue is kept ready to regulate. Furthermore, the inline consumption measurement of paint or flexographic ink or glue can be used in a logistics system for automated logistics control.

Preferably, an actual scoop volume of an anilox roller of the respective coating unit or of the respective flexographic printing unit or of the respective gumming unit is determined from the detected fill level of the or each container, from the recorded number of the printed copies and from a predetermined format of the printing material and with a predetermined Creation volume compared. Then, when the actual scoop volume is smaller than the predetermined scoop volume, in particular, a contamination of the corresponding anilox roller is concluded. Then, if the actual scoop volume is greater than the predetermined scoop volume, in particular a leak in the paint circuit or flexographic ink circulation or glue circuit is closed. Also, if the actual scoop volume is greater than the predetermined scoop volume, then it can be concluded that a wrong anilox roller is in use.

In coating units or flexographic printing units or gumming works, which are not designed as chamber doctor blade / anilox systems but rather as two- or three-roller systems, from the detected level of the or each container, from the recorded number of printed copies and determined from a given format of the printing material, an actual transfer amount of paint or flexographic ink or glue at cleavage points of the two- or three-roller system and compared with a predetermined transfer amount. Then, when the actual transfer amount deviates from the predetermined transfer amount, in particular, an inaccurate squeeze adjustment between successive rolls of the two-roll or three-roll sys- tem can be concluded.

According to an advantageous development of the invention, the container of the or each coating unit and / or the or each flexographic printing unit and / or the or each gumming unit paint or flexographic ink or glue from at least one reservoir of a conditioning device is supplied, wherein at least one parameter of the paint or the flexographic ink or the glue, in particular a temperature and / or a viscosity and / or a pH value of the lacquer or the flexographic ink or glue, in particular in the corresponding storage container of the conditioning is detected during the printing operation. Detected actual values of the or each parameter are compared with predefined setpoint values, wherein in the case of a deviation of the actual values from the corresponding setpoint values, the corresponding conditioning device is controlled or regulated in such a way that the actual values are approximated to the predefined setpoint values.

Preferred embodiments of the invention will become apparent from the dependent claims and the description below. Embodiments of the invention will be described, without being limited thereto, with reference to the drawings. Showing:

1 : a schematic representation of a sheet-fed printing press to illustrate the method according to the invention; and

2 : Another schematic representation of a sheet-fed press for further clarification of the method according to the invention.

Hereinafter, the present invention will be described with reference to FIG 1 and 2 described in more detail using the example of a sheet-fed press. It should be noted at this point that the invention is not limited to the use of sheet-fed presses but can also be used on web presses.

1 schematically shows an illustration of a sheet-fed press 10 that a investor 11 , six offset printing units 12 , one of the offset printing units 12 downstream coating unit 13 as well as the coating plant 13 downstream boom 14 having.

In the field of sheet-fed printing press 10 to be printed sheets are in the investor's area 11 in the form of a piling pile held ready and for printing in the direction of the arrow 15 through the sheetfed press 10 moved, taking in the offset printing units 12 Offset printing ink and in the coating unit 13 Paint is applied to the sheet. In the area of the jib 14 Be printed sheets from the press 10 discharged to form a Auslegestapels.

The coating plant 13 the sheetfed press 10 has a paint dosing device 16 , the box framed in dashed lines the 1 is shown enlarged, and which serves to apply the paint on the sheet. The paint dosing device 16 of the coating plant 13 has a container 17 in which lacquer is kept ready. The one in the container 17 prepared paint is via a flow line 18 a chambered scraper 19 fed, which the paint on a non-illustrated anilox roller of Lackdosiereinrichtung 16 transfers. The paint, over the supply line 18 in excess amount in the direction of the chambered doctor blade 19 is transported in the area of one of the chambered doctor blade 19 associated collecting container 20 collected and via a return line 21 back into the container 17 recycled. According to 1 is both in the supply line 18 as well as in the return line 21 one pump each 22 respectively. 23 integrated to the paint either from the container 17 towards the chambered doctor 19 or from the collection container 20 towards the container 17 to promote.

Within the meaning of the present invention, the sheet-fed printing machine is used during the printing operation 10 the level of the container 17 the paint dosing device 16 and thus the coating plant 13 detected. This can be z. B. be done by the container 17 a level sensor 24 is assigned, which the level of the container 17 detected directly and the corresponding measured value of a control device 25 feeds the printing press.

Alternatively, the level of the container 17 also indirectly be captured by the fact that both in the supply line 18 as well as in the return line 21 one flow sensor each 26 respectively. 27 is integrated, one with the flow sensors 26 and 27 cooperating evaluation device 28 by subtraction of the flow sensors 26 and 27 determined flow rates determined the used paint. Knowing the initial level of the container 17 as well as knowing, if necessary, the container 17 from a storage container 29 via a refill line 30 supplied refill amount can from this, the level of the container 17 be determined. According to 1 is in the refill line 30 a pump 31 integrated, whereby by monitoring the running time and the speed of the pump 31 the container 17 from the reservoir 29 supplied refill quantity can be determined.

The indirect level measurement of the container 17 and thus consumption measurement of paint can continue to be carried out on the basis of pump characteristics, in particular, if pumps are used as metering pumps with a defined volumetric stroke.

In addition to the level of the container 17 of the coating plant 13 Furthermore, during the printing operation, the number of printed sheets printed in the sheet-fed printing machine is detected, in which case in particular in the area of the delivery arm 14 a sheet counter 32 is positioned, the a corresponding measured value of the control device 25 the sheetfed press 10 provides. From the detected level of the container 17 of the coating plant 13 as well as from the recorded number of printed sheets is the during the printing operation in the coating unit 13 Quantity of lacquer consumed per sheet is determined. This value is in the controller 25 determined and automatically logged and, where appropriate, for controlling or regulating other processes on the sheet-fed press 10 used.

The sheet counter can also be arranged at another position of the sheet-fed printing press. It is also possible to have several sheet counters whose counter readings are offset against one another. So it is z. B. possible that a first sheet counter to the boom and a second sheet counter of a curved switch, are discharged via the spoils sheet. The counter readings of these two sheet counter are then added to determine the total number of printed sheets.

In the control device 25 is preferably from the detected level of the container 17 of the coating plant 13 , From the recorded number of printed in the sheet-fed press sheet and from a predetermined format of the sheet, an actual Schöpfvolumen the on the chambered doctor blade 19 Anilox roller of the coating unit filled with lacquer 13 determined, this actual scoop volume is compared with a predetermined scoop volume of the anilox roller. Then, when the actual scooping volume is smaller than the predetermined scooping volume, it is particularly possible to close the scouring roller and cause it to be cleaned. Then, if the actual scoop volume is greater than the predetermined scoop volume, in particular to a leak in the paint circuit, such. B. on a leakage of a pump or a line of the paint circuit, closed. Also, if the actual scoop volume is greater than the predetermined scoop volume, then it can be concluded that a wrong anilox roller is in use.

It should be noted at this point that in coating units, which are formed in contrast to the embodiment shown not as chamber doctor blade / anilox systems but rather as two- or three-roller systems, from the detected level of the or each container from the recorded number of printed sheets and from a predetermined format of the sheet, an actual transfer amount of paint at cleavage points of the two- or three-roller system can be determined and compared with a predetermined transfer amount.

Then, when the actual transfer amount deviates from the predetermined transfer amount, in particular, an inaccurate squeeze adjustment between successive rolls of the two-roll or three-roll sys- tem can be concluded.

The above inline consumption measurement for the paint in the coating plant 13 It can also be used to adjust the fill level of the container depending on a given print run height and the number of print sheets already printed 17 of the coating plant 13 to regulate such that upon reaching the predetermined print run height of the container is empty or contains a minimized residual amount. As a result, the cleaning of the same can be facilitated. Furthermore, paint is saved.

Further preferred developments of the method according to the invention for operating a printing press are described below with reference to FIG 2 described. 2 shows a section of a sheet-fed press 33 , where in 2 an offset printing unit 34 , an offset printing unit 34 downstream first coating plant 35 , two of the first coating plant 35 Downstream drying facilities 36 respectively. 37 and a drying facilities 36 and 37 downstream second coating unit 38 shows. The second coating unit 38 is again a jib 39 downstream, printed in the sheetfed printed sheet from the same to form a Auslegestapels be discharged.

The two coating plants 35 and 38 the sheetfed press 33 of the embodiment of 2 in turn have a paint dosing 40 respectively. 41 , wherein of the Lackdosiereinrichtungen 40 respectively. 41 in 2 only anilox rolls 42 respectively. 43 are shown. The with the anilox rollers 42 respectively. 43 cooperating chamber doctor blade of the paint dosing device and the container of the respective paint dosing device, via which paint is supplied to the respective chamber doctor blade, are in 2 Not shown.

Rather shows 2 for both coating plants 35 and 38 a reservoir 44 respectively. 45 a conditioning device, via which the Lackdosiereinrichtungen 40 respectively. 41 the paint works 35 respectively. 38 can be supplied with paint. In the embodiment of 2 can analogously to the embodiment of 1 a quantity of paint used for each printing unit during printing operation for each of the coating units 35 and 38 be determined, with reference to 1 described way. To avoid unnecessary repetition in this regard, the above comments on the embodiment of 1 directed.

In the embodiment of 2 are the reservoir 44 , which with the Lackdosiereinrichtung 40 of the coating plant 35 cooperates, paint container 46 assigned, from which the reservoir 44 with the help of a pump 47 can be filled with varnish. It is within the meaning of the present invention that a paint container 46 removed and the reservoir 44 supplied amount of paint to capture and evaluate so as. B. an emptied paint container 46 through a new paint container 46 to replace.

Furthermore, it is within the meaning of the present invention to record at least one parameter of the paint held ready in the storage containers during the printing operation. In the embodiment of 2 takes place for in the storage container 45 prepared paint a temperature measurement and a viscosity measurement and a pH value of the in the reservoir 45 prepared paints, with corresponding measured values of a control device 48 the sheetfed press 33 to be provided. In the control device 48 the detected actual values are compared with predefined setpoint values, wherein in the case of a deviation of the actual values from the corresponding setpoint values, the corresponding conditioning devices are controlled or regulated such that the actual values are approximated to the predefined setpoint values.

Dodge z. B. the measured actual temperature of the reservoir 45 held paint from the predetermined setpoint temperature, it can in the reservoir 45 prepared paint over a heater 49 and / or a cooling device 50 be tempered. The temperature of the paint is preferably carried out in the reservoir. Alternatively or additionally, the temperature of the paint can also be carried out via a continuous flow heat exchanger integrated into the pipe system.

Furthermore, based on the measured actual temperature of the paint, the heating power of z. B. in the range of the boom 39 positioned drying equipment 51 controlled or regulated to automatically adjust the heat output of the drying equipment to the temperature of the paint. In an analogous way, the heating capacity of the drying devices 36 and 37 be adapted, depending on the temperature of the reservoir 44 prepared paint.

It should be noted at this point that the temperature of the paint can be measured at different positions within the conditioner or the printing press. So it is z. B. possible to detect the temperature of the paint immediately after the application of the paint on the sheets in the field of sheets by a pyrometric measurement. It is also possible, the temperature of the paint in the field of Lackdosiereinrichtung 41 of the coating plant 38 to detect, namely in the range of a chambered doctor blade or an anilox roller.

Is the viscosity of the reservoir 45 When the paint is held ready and determined when compared with a predetermined setpoint for the viscosity that the actual value of the viscosity deviates from the corresponding desired value, the viscosity of the same can be adjusted in the sense of the present invention by adding additives to the paint.

So shows 2 that the reservoir 45 a container 52 is assigned for an additive, which depends on the viscosity measurement in the reservoir 45 can be admixed paint. The regulation of the viscosity by the addition of additives to the lacquer is preferably carried out in the case of dispersion lacquers, water preferably being added as an additive to the lacquer. The above admixture can be controlled by the injector principle or by means of metering directly into the paint circuit, with small Zudosiermengen provided a short mixing distance may be sufficient.

In an analogous way, other additives can be added automatically to the paint, such. B. defoamer. Likewise, in the sense of the present invention, if the measured viscosity deviates from the corresponding actual value, then the presence of a false paint in the storage container 45 closed and depending on this, a replacement of the paint can be caused.

Is the ph value of the in the reservoir 45 When the lacquer prepared is measured and, when compared with a predetermined set value for the ph value, determined that the actual value of the ph value deviates from the corresponding desired value, the ph value of the same can be set in the sense of the present invention by adding additives to the lacquer , Thus, the same water and / or ammonia can be added to keep the pH value of dispersion varnishes constant. As a result, the paint application can be stabilized on the sheet.

In the paint circuit of the Lackwerke also non-illustrated paint filter can be integrated, which can be detected by an automated pressure flow measurement and / or differential pressure measurement of the paint filters soiling the same. The paint filters can then be replaced or cleaned in time to prevent them from blocking.

According to 2 is the controller 48 the sheetfed press 33 via an interface 53 with a parent control system 54 coupled, in which based on the data collected in the sense of the inventive data logistic functions and production logging functions or data logging functions can be performed automatically.

As logistics functions, material balances for printers can be automated. Reordering of z. As paints or paint can be automated, possibly with automatic transmission of the data to a supplier or to a manufacturer of the paints. Also, disposal processes for z. As detergent or automatically controlled or regulated for excess and to be disposed paint. Due to the inventive, continuous inline consumption measurement of paint for all participating in the printing coating units warning messages can be automatically generated when one or more of the coating unit is below a permissible minimum paint amount. Optionally, the printing press can then be automatically stopped or stopped.

As production or data logging functions, printouts of the collected data can be made automatically, in order, for. B. to automatically create process documentation for an end customer. The data can also be automatically stored on data carriers or automatically transmitted remotely.

All of the above-mentioned data acquisitions, data evaluations and / or data storages take place in interaction with a printing machine control device of the printing press, in particular via a machine control station of the printing press and external units or assemblies involved in the control of the printing press, which are coupled via interfaces to the machine control station or the printing machine control device ,

With reference to 1 and 2 For coating systems of a sheet-fed printing machine described, inventive method can also be used on flexographic printing units and Gummierwerken a sheetfed press. It is likewise possible to use the method according to the invention when varnishing units or flexo printing units or gumming units of a sheet-fed printing press are cleaned. In this case, a material balance can be created automatically for rinsing agents directed by the coating unit or flexographic printing unit or gumming unit in order to automatically log corresponding material balances and make them available for further processes.

LIST OF REFERENCE NUMBERS

10

Sheetfed

11

investor

12

Offset printing unit

13

coating unit

14

boom

15

transport direction

16

Lackdosiereinrichtung

17

container

18

supply line

19

chambered doctor blade

20

Clippings

21

Return line

22

pump

23

pump

24

level sensor

25

control device

26

Flow Sensor

27

Flow Sensor

28

evaluation

29

reservoir

30

refill

31

pump

32

sheet counter

33

Sheetfed

34

Offset printing unit

35

coating unit

36

drying device

37

drying device

38

coating unit

39

boom

40

Lackdosiereinrichtung

41

Lackdosiereinrichtung

42

anilox roller

43

anilox roller

44

reservoir

45

reservoir

46

lacquer container

47

pump

48

control device

49

heater

50

cooling device

51

drying device

52

container

53

interface

54

control system

Claims (15)

Method for operating a printing machine, in particular a sheet-fed printing machine ( 10 ), with at least one coating unit ( 13 . 35 . 38 ) and / or at least one flexographic printing unit and / or at least one gumming unit and optionally one or more offset printing units ( 12 ), wherein the or each coating unit ( 13 . 35 . 38 ) and / or the or each flexographic printing unit and / or the or each gumming unit a container ( 17 . 52 ), in which lacquer or flexographic printing ink or glue is kept ready, the lacquer or the flexographic ink or the glue being applied via the respective coating unit or flexographic printing unit or gumming unit to a printing material to be printed on the printing machine, in particular to printed sheets to be printed; characterized in that a) during the printing operation, the level of the container ( 17 . 52 ) of the or each coating unit ( 13 . 35 . 38 ) and / or the or each flexographic printing unit and / or the or each gumming unit is detected, b) during the printing operation, the number of printed copies in the printing press, in particular the printed sheet is detected, c) from the detected level of or each Container ( 17 . 52 ) and from the recorded number of printed copies which during printing operation in the respective coating unit ( 13 . 35 . 38 ) or flexographic printing unit or gumming unit the quantity of varnish or flexographic ink or glue consumed per printed copy is determined. A method according to claim 1, characterized in that from the detected level of the or each container ( 17 . 52 ), from the recorded number of printed copies, in particular printed sheets, and from a predetermined format of the printing material, in particular the printed sheet, an actual draw volume of an anilox roller ( 42 . 43 ) of the respective coating unit ( 13 . 35 . 38 ) or flexo printing unit or gumming unit is determined. A method according to claim 2, characterized in that the determined, actual scoop volume of the anilox roller ( 42 . 43 ) of the respective coating unit or flexographic printing unit or the gumming unit with a predetermined Schöpfvolumen the corresponding anilox roller ( 42 . 43 ), wherein, when the actual scoop volume is smaller than the predetermined scoop volume, in particular to contamination of the corresponding anilox roller ( 42 . 43 ) is closed. A method according to claim 2 or 3, characterized in that the determined, actual scoop volume of the anilox roller ( 42 . 43 ) of the respective coating unit or flexographic printing unit or gumming unit is compared with a predetermined scoop volume of the corresponding anilox roller, in which case, if the actual scoop volume is greater than the predetermined scoop volume, in particular a leak in the paint circuit or flexographic ink cycle is concluded. Method according to one or more of claims 1 to 4, characterized in that the container ( 17 . 52 ) of the or each coating unit and / or the or each flexographic printing unit and / or the or each gumming unit lacquer or flexographic ink or glue from at least one storage container ( 29 . 44 . 45 ) is fed to a conditioning device, wherein at least one parameter of the varnish or the flexographic ink or the glue, in particular a temperature and / or a viscosity and / or a pH, preferably in the corresponding reservoir ( 29 . 44 . 45 ) of the conditioning device is detected during the printing operation. A method according to claim 5, characterized in that detected actual values of the or each parameter are compared with predetermined target values, and that in case of a deviation of the actual values from the corresponding target values, the corresponding conditioning device is controlled or regulated such that the actual values are approximated to the predetermined target values. A method according to claim 5 or 6, characterized in that the viscosity of the paint or the flexographic ink or the glue is measured. A method according to claim 7, characterized in that when an actual value of the viscosity deviates from the predetermined desired value, either by the addition of additives, the viscosity is controlled or to the presence of a false paint or a wrong flexographic printing ink or a false glue in the reservoir ( 29 . 44 . 45 ) of the corresponding conditioning device is closed. Method according to one or more of claims 5 to 7, characterized in that the temperature of the varnish or the flexographic printing ink or the glue in the reservoir ( 29 . 44 . 45 ) the corresponding conditioning device and / or in the container ( 17 . 52 ) of the corresponding coating unit ( 13 . 35 . 38 ) or flexographic printing unit or gumming unit and / or in the area of an anilox roller ( 42 . 43 ) or chambered doctor blade ( 19 ) of the corresponding coating unit ( 13 . 35 . 38 ) or flexo printing unit or gumming unit and / or measured on the substrate in. A method according to claim 9, characterized in that, when an actual value of the temperature deviates from the predetermined desired value, by heating or cooling the paint or the flexographic ink or the glue in the reservoir ( 29 . 44 . 45 ) the temperature is regulated. A method according to claim 9 or 10, characterized in that based on the actual value of the temperature of the varnish or the flexographic ink or the glue drying devices ( 36 . 37 . 51 ) of the printing press, which serve to dry the varnish or the flexographic ink or the glue, are regulated or controlled with respect to their heating power. Method according to one or more of claims 5 to 11, characterized in that the pH of the varnish or the flexographic ink or the glue is measured. A method according to claim 12, characterized in that when, in particular in the case of dispersion paints, an actual value of the pH value deviates from the predetermined desired value, the ph value is regulated by the addition of additives such as water and / or ammonia in order to apply the paint to the printing material stabilize. Method according to one or more of claims 1 to 13, characterized in that the data collected during the printing operation and determined automatically logs, in particular stored and / or remotely transmitted and / or printed, are. Method according to one or more of Claims 1 to 14, characterized in that logistics functions are carried out automatically on the basis of the data recorded and determined during the printing operation.

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