EP1512531A1 - Inking control system for printing machines - Google Patents

Abstract

An offset newspaper or magazine colour printing press has numerous colour sensors located at fixed points on the machine and which measure colour register over the entire width of a moving web. At least one primary colour is registered within each colour zone. The sensors measure actual values which are compared by computer with target values and auto-corrected.

Description

TECHNICAL AREA

The present invention relates to the field of Printing technology, in particular on offset printing of newspapers and magazines. She starts from a procedure and a device for monitoring the color scheme on a Printed product according to the preamble of the independent claims.

STATE OF THE ART

In U.S. Pat. 5'967'050 becomes a color control system revealed for newspaper printing. On the printing surface become single smaller areas with a color-sensitive Video camera or a linear CCD array with color filters measured, color values for individual pixels or Pixels determines and the color values pixelwise with the Target color values of the corresponding areas on the Original image compared. The color correction for the whole Print image must then be calculated with complex system models become. For the correlation of printed pixels and Original picture points as well as for the system modeling and Calculation of the sensitivity factors of the inking stations as functions of the required pixel color corrections huge matrix systems have to be charged. This brings an immense computational burden with it. Although that System does not need test images or color markings, it can only do so in small predetermined image areas Measure and compare pixels exactly and then has the Pixel comparisons with relatively inaccurate system models extrapolate to the entire print image. In addition, that must Field of view of the CCD camera to avoid moire patterns kept small. The measurable image areas are then through the narrow field of view of the image capture device limited.

In U.S. Pat. 4'649'502 becomes a color control system disclosed in which the printed product on-line with a transversely to the printing direction mobile photoelectric densitometer is scanned. This is a color zone on the Printing machine in several picture elements on the printed product disassembled. Actual target color deviations are for each Image element measured with specific weight factors weighted and finally for each color zone to one Zone-specific color quality value added up. To this Way can also on test pictures or color marks dispensed with on the printed product. However, that is the scanning device mechanically complex, reduces the Measuring accuracy and recorded only a small area of the printed product.

In U.S. Pat. 4'660'159 becomes a relative Color control system disclosed that with densitometric Scanning devices online at the printing press and off-line for reference measurements. In turn are defined on selective printing surfaces picture elements, densitometrically measured and for each color zone integrated. In the off-line measurement at the stationary Original image are also used to increase the measurement resolution defined in each pixel sub-picture elements whose Color values are measured integrally over the entire sub-pixel area and summed up to a color value of the picture element. With the on-line scanning device becomes again only a small one Area fraction of the printed product recorded.

The above systems are exclusively densitometric Measurements, if necessary with CCD camera and Color filters, based. The reflectivity is in Selective narrowband spectral ranges measured, the for the individual inks, z. B. CMYK (= cyan magenta yellow black) are characteristic, and it is from the Reflectivities the color densities of the inks, d. H. of the Logarithm of reflectivity and thus the amount of ink per area, determined. From the target-actual comparison of Ink color densities become the color correction signals calculated for the inks. The narrow-band densitometric Measurements have the advantage that immediate the ink quantities are determined. The disadvantage is however, that the reflection spectra of the inks can vary, so the densitometric measurements become unreliable. In conventional system need the Densitometers therefore often recalibrated. Because of the spectral variations gives the knowledge of the ink components on the printed product also no consistent Measure for the color impression. The optically relevant Color impression can only by an exact determination of the Color point in the color space, z. B. by three color values (= Coordinates of the color point) such. B. RGB (= red green blue) color values, can be clearly detected.

Previously, the color of the printed image of the Printer visually monitored and if necessary, the color control manually controlled. This kind of color quality check requires a great deal of expertise from the printer and is yet subjective, inaccurate, time consuming and expensive.

PRESENTATION OF THE INVENTION

The object of the present invention is a method and an apparatus for controlling the coloring in one To specify a printing press and a printing press, which themselves characterized by a simplified function and design. This object is achieved by the Features of the independent claims solved.

In a first aspect, the invention is a method for controlling the coloring in a printing machine, each ink from a color control with multiple Color zones is regulated, with an actual color scheme on the Print product online while printing with help a color recognition device is determined, a target color is determined on an original artwork and off the resulting actual / target deviations for at least an ink and color zone a color correction signal for generates the associated color control of the printing press is, wherein the color recognition device a variety of Includes color sensors for color measurement, stationary at the Printing press are arranged and with which the actual coloring areal over an entire, with color printed width of the printed product is measured and wherein for each color zone of the printing press at least one fast primary colorimetric signal is detected for at least one of the color zones from the primary colorimetric signal by integration along a printing direction over one specifiable color image area of the printed product in the Color zone is formed an integral color measurement signal from the integral color measurement signal for at least one printing ink an entire actual area coverage of the color image area in the color zone is determined and with the help of the actual area coverage the color correction signal for the color zone and the ink is produced.

The original template may be in the form of an OK copy, a Pre-press, a printing plate, digital data or otherwise be given. The color sensors can at least one color and preferably several colors including black or gray. Position detectors for localization of reference color marks on the printed product not required. The arrangement of a variety of color sensors allows it with a stationary apparatus the Full coverage of the entire print width visually. The acquisition of fast colorimetric signals allows the Print product also covering the entire printing direction to monitor. Fast here means that at least several or a few lines of text together detectable color measurement signal, this at typical Print speed of up to 15 m / s or more. The Color image areas can be characterized by their position, by characteristic Characteristics in the colorimetric signal or otherwise be specified. The integration step becomes the large flood of data as directly as possible to the color sensors massively reduced. In addition, the integral color measurement signal provides a very good measure of the total actual area coverage with a printing ink. Due to the fast detection of the primary color measurement signal is a high accuracy of the achieved integral color measurement signal. The resulting Color measurement signal allows exact control and regulation the coloring.

The embodiment according to claim 2a has the advantage that such color sensors can be used which has a spectral sensitivity similar to that of the human eye, so for example Red, green and blue are delicate.

The embodiment according to claim 2b has the advantage that a wide pressure path through a variety of Color sensors with great accuracy across the entire width is detected.

The embodiment according to claim 3 has the advantage that the printing web with high spatial resolution on the entire printed area is recorded.

The embodiments according to claims 4-5 allow a large reduction in the amount of data, but still the relevant total area coverage is determined exactly and The control method is used as the actual value.

In a further aspect, the invention consists in a Device for controlling the coloring in a printing machine, in particular for carrying out the method according to one of the preceding claims, wherein the printing press For each ink a color control with several color zones comprising a color recognition device for Determining an actual color on a printed product on-line during the printing process and a control unit for determining a deviation of the actual coloration from a target color and for generating color correction signals for at least one printing ink and ink zone for controlling at least one of the inking stations, wherein Furthermore, the color recognition device a variety of color sensors for color measurement, which is stationary at the printing press are arranged and with which the actual coloring areal over an entire, printed with color Width of the printed product is measurable and where the Control unit detection means for at least each a fast primary colorimetry signal per color zone, integrator for at least one color zone for integration the primary color measurement signal selectively over a predetermined Color image area of the printed product in the Color zone and calculating means for the determination of an entire Is area coverage for at least one of the inks in the color image area in the color zone and for generating the Color correction signal for the ink zone and ink from the Is area coverage and a target area coverage includes.

The arrangement of several color sensors in a color measurement module according to claim 8 has the advantage of a compact design and easy and safe installation on the press.

The division of a color zone according to claim 9 into several parallel image zones to be monitored allow a simple, nationwide and even overlapping, partly redundant monitoring of the entire printing width.

By the control unit according to claims 10-11 will have enough processing power for a total area monitoring and for targeted data reduction before the integration step made available.

The invention is also a printing press with an inventive device for ink control.

Further embodiments, advantages and applications of the invention arise from dependent claims as well as from the Now following description and the figures.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1

ein Blockdiagramm einer Rollenoffsetdruckeinheit für 4-Farbendruck (CMYK);

Fig. 2

eine schematische Darstellung des Farbflusses in einer Farbeinheit;

Fig. 3

eine Illustration eines Farbstellwerks für den Rollenoffsetdruck;

Fig. 4

ein Diagramm eines erfindungsgemässen Farbkontrollsystems mit geschlossenem Regelkreis; und

Fig. 5

eine schematische Darstellung einer erfindungsgemäss stationären und vollflächigen Farbmesseinrichtung.

Show it:

Fig. 1

a block diagram of a web offset printing unit for 4-color printing (CMYK);

Fig. 2

a schematic representation of the color flow in a color unit;

Fig. 3

an illustration of a color interlocking for web offset printing;

Fig. 4

a diagram of a color control system according to the invention with closed loop control; and

Fig. 5

a schematic representation of an inventive stationary and full color meter.

In the figures, the same parts are given the same reference numerals Mistake.

WAYS FOR CARRYING OUT THE INVENTION

Figs. 1-3 show diagrams of a conventional web offset printing unit 1 for 4-color printing (CMYK = Cyan, Magenta, Yellow and Black) to which the invention is preferably based refers. Fig. 1 shows for each ink F1, ..., F4 Printing unit 1a with a color unit 1b or a color control 1b. The printed product 3 passes in the printing direction 4 consecutively the printing units 1a and so printed in several colors. The order of the printing units 1a, 1b is not mandatory.

Fig. 2 shows schematically the color flow in a per se known color unit 1b, which extends across the entire paper web extends. About color screws 5 is a segmented Color panel 6 adjusted so that out of the paint reservoir 8 for each color aperture segment (corresponding to a Color zone 12) a desired amount of ink on the Ink roller 8 is transferred. The printing ink is about diverse Rollers 2, in particular via ductor rollers 9, vibrator rollers, a pressure roller 10 with printing plates and a Printing cylinder 11 on the printed product 3, z. B. Newsprint 3, printed. The vibrator rollers oscillate transversely to the roller mill and distribute the printing ink F1, ..., F4 of one color zone 12 to the other, so a more homogeneous color distribution transverse to the individual color segments 12 receive. For simultaneous two-sided printing is in Normally a corresponding printing unit 1a and color unit 1b also arranged above the pressure medium 3, but not shown here.

Fig. 3 shows schematically in plan view a color actuator 1b for a web offset press 1. Many color screws 5 are on the color actuator 1b transverse to the printing paper. 3 arranged so as to reduce the amount of paint applied to the rollers 2 is transmitted to control. The amount of color screws 5 can vary depending on the printing press 1; usually For a 36 inch web width, 24 color screws 5 are used used. By each color adjustment screw 5 and each associated segment of the segmented color stop 6 is on the ink roller 8 and later on the pressure roller and the Printed product (not shown here) a color zone 12 Are defined. All color zones 12 together cover the entire with printing width of the printed matter from. At the diaphragm segment edge 13 of the color panel 6 is the Printing ink F1, ..., F4 of the ink station 1b from the ink reservoir 7 transferred to the ink roller 8. The amount of color, which ultimately via the roller system 2 of the printing machine 1 is applied to the printing medium 3, can by the adjustment of the distance between the diaphragm segment edge 13 of the color panel 6 and the outer surface of the ink take-up roller 8 are changed. The position of each one Aperture segment 12 with respect to the ink roller 8 and Thus, the amount of ink which on this print web part 3 ' can be applied through the interlocking 1b for each Color zone 12 can be set independently.

Based on Fig. 4-5, the inventive system for Control of coloring in a printing machine 1 explained. Fig. 4 shows an entire color and printing unit 1a, 1b, in which a printing ink F1, ..., F4 of the associated color actuator 1b is controlled zone by zone. First, on an original document 18a, 18b a Target coloration determined. The original artwork 18a, 18b can z. B. an original image 18 a, an OK-copy 18 a, a Prepress 18a, original digital image data 18a or a pressure plate 18b typically for exactly one print page or newspaper page 18a, 18b, 18c of the printed product Be 3. It typically contains a mixture of Text areas 3a, printed with solid black, and by Color image areas 3b, printed with printing inks F1, ..., F4, z. Cyan, magenta, yellow and black (CMYK). As is known, will the printing process and the coloring, in particular the area coverage with printing ink on the printing roller 11 or the pressure plate 18 b, from the system controller 14 for the printing and color unit 1a, 1b controlled. there can an actual color on the printed product 3 on-line during printing using a color detection device 21 'determined and from the resulting actual / target deviations for each ink F1, ..., F4 and ink zone 12 a color correction signal 28 for the associated color actuator 1b of the printing press 1 are generated.

According to the invention, the color recognition device 21 'now comprises a plurality of color sensors 24a, 24b, 24c for color measurement 16, which is stationarily arranged on the printing machine 1 are and with which the actual coloring areal on one total printed width of the printed product 3, wherein for each color zone 12 the printing press 1 at least a fast primary Color measurement signal 26 is detected, for at least one of Color zones 12 from the primary color measurement signal 26 through Integration along the printing direction 4 over a predefinable Color image area 3b of the printed product 3 in the Color zone 12 an integral color measurement signal 27 formed is, from the integral color measurement signal 27 for at least an ink F1, ..., F4 an entire actual area coverage of the color image area 3b in the ink zone 12 is determined and using the actual area coverage, the color correction signal 28 for the ink zone 12 and ink F1, ..., F4 generated becomes. So it's going to be one over a big one Print area 18c of printed product 3 integrated Color measurement signal 27 an entire actual area coverage of the Pressure range 18c determined and from the entire area coverage the color correction signal 28 is generated. Hereinafter Embodiments are given.

Fig. 4 shows schematically an embodiment for the Process steps: optically large-area or full-page Detection of the print image 18c with the color recognition device 21 'comprising at least one color measuring module 21, passing the time-dependent primary color measurement signal 26 to the Color measuring unit 16a for signal acquisition and preprocessing and to the integration and image processing unit 16b for forming the integral color measurement signal 27. The signal processing and in particular integration of primary color measurement signals 26 may be analog-electric in the Measuring electronics 25 of the measuring module 21 (FIG. 5) and / or digitally performed in the color control system 15, 16a, 16b (FIG. 4) become.

Thanks to the digital system integration of the prepress enable latest computer-to-plate technologies a direct transfer of the original image information 18a on the pressure plate 18b. The use of digital Pre-press data allows a simpler and easier way more precise calculation of the printing plate color assignment or Printing plate coverage. The printing plate surface coverage is the ratio between colored area on the Plate 18b and the total plate surface, delivering so an optimal measure of the required amount of color for the Print of the picture 18c. From the original picture 18a or the printing plate 18b become target image data in the color control unit 17 fed in there and with the integral color measurement signals 27 compared. For this actual / target comparison, the Data, if necessary, prepared so that they themselves to the same colorimeters, preferably to the entire area coverage in the given color image area 3b, Respectively. From the actual / target deviation will be ongoing Color correction signals 28 generated and via system control 14 to the color and printing unit 1b, 1a for zoning Control of at least one ink F1, ..., F4 forwarded. The color control unit 15 compares the actual coloration with the target coloration in particular under consideration of the common models to description of printing presses 1 and provides the color correction signals 28 the printing system 14 in a suitable form available.

The actual / target comparison can be determined by a correlation between the measured area coverage of the entire printing area 18c or the major larger areas 3b and the target area coverage determined by the prepress data respectively. With this method can the whole Print image 18c optimally adapted to the pressure specifications 18a and not just individual smaller areas of the print image 18c. The large-area or whole-area measurement the ink coverage covers the whole required amount of ink for the print image 18c, so that the amount of color not from small control color fields extrapolated to the whole page layout or area coverage must be, since the color trolleys 1b already according to the entire area coverage.

Advantageously, the original artwork 18a, 18b is the same and in particular calibrated color sensors 24a, 24b, 24c have been scanned as the print image 18c. The original artwork 18a, 18b can also be detected with a CCD camera become. The image or color data of the original image 18a can print directly in electronic form from the prepress, by scanning the printing plates 18b or by direct Track measurement of an OK copy can be obtained. Prefers the color gets better with an accuracy than measured by those of the eye. Then become target area coverage integral to the color image areas of interest 3b determined.

Color values are preferred with the color sensors 24a, 24b, 24c RGB measured on the printed product 3, where for belonging RGB color values, which are the coordinates of a form abstract color point in a color space, respectively detects the primary color measurement signal 26 and the integral Color measurement signal 27 is formed and from the integral Color measurement signals 27 associated color values RGB the actual area coverage for at least one of the inks F1; ...; F4 is calculated as the actual coloration in the Regulatory procedure is used. As the actual color scheme Preferably, the entire area coverage used by the integral color measurement signal is detected very accurately, since these Sizes are approximately proportional to each other. alternative to RGB color values can also reflectivity, optical density or color values expressed in one of common color standards (eg status T, XYZ, CIELUV or CIELAB). Different methods for Conversion of RGB reflection values in XYZ or CIELAB and CIELUV, and thus are in ink coverages known and described.

It will also be beneficial in at least one of the color zones 12 defines a plurality of image zones 19, wherein for each image zone 19 separate primary color measurement signals 26 are detected and the integral color measurement signal 27 by integration and Addition of the primary color measurement signals 26 is formed.

Advantageously, the primary color measurement signal 26 becomes so fast or faster that captures at least individual lines of text and in particular at least individual letter thicknesses can be detected. Also should that primary color measurement signal 26 along the printing direction 4 continuously recorded and selectively integrated if required become, so that belonging to the color zone 12 Printing web part 3 'on the printed product 3 in the printing direction 4 is monitored over its entire surface.

The integration can take place over an entire print image 18c of the Printed product 3 and in particular over several in Printing direction 4 consecutive entire print images 18c of the printed product 3 are executed. Thereby becomes exactly the relevant ink coverage, namely the area coverage over an entire print image 18c or for example over a whole pressure roll rotation, d. H. over two on the pressure roller 11 in the printing direction 4th consecutively arranged printed images 18c, metrologically detected.

For data reduction, the primary color measurement signal 26 in FIG Printing areas 3a with only full-tone text on the Printed product 3 excluded from further processing become. To improve the measuring accuracy, the integral color measurement signal 27 for each color image area 3b of the printed product 3 are formed.

The method is preferred for all ink zones 12 in one the inking stations 1 b of the printing press 1 and / or for all inking stations 1b and thus printing inks F1, ..., F4 of Printing machine 1 applied. Then for each color zone 12 and / or ink F1, ..., F4 from integral color measurement signals 27 actual area coverage determined and by comparison with the corresponding target area coverage the zone and ink specific color correction signals 28 generated.

The invention also provides a device for Execution of the procedure. The device includes besides the color recognition device 21 ', a control unit 15, 25th for determining a deviation of the actual coloration from a Target coloration and for generating color correction signals 28 for at least one ink F1, ..., F4 and Color zone 12 for controlling at least one color stop 1b. According to the invention, the color recognition device 21 'comprises a plurality of color sensors 24a, 24b, 24c for color measurement 16, which is stationarily arranged on the printing machine 1 are and with which the actual area coverage with a printing ink F1, ..., F4 areal on a whole, with color printed width of the printed product 3 is measurable, and the control unit 15, 25 comprises detection means 16a, 25 for at least one fast primary colorimetric signal 26 per color zone 12, integrator 16b, 25 for at least one color zone 12 for integration of the primary Color measurement signal 26 selectively over a predetermined color image area 3b of the printed product 3 in the ink zone 12th and computing means 17 for determining a total actual area coverage for at least one of the inks F1, ..., F4 in the color image area 3b in the ink zone 12 and the Generation of the Color Correction Signal 28 for the Ink Zone 12 and the ink F1, ..., F4 from the actual area coverage and an associated target area coverage.

According to the exemplary embodiment in FIG. 5, the color recognition device comprises 21 'for a color zone 12 of the printing press 1 at least one separate stationary color measurement module 21 with at least one color sensor element 24 and with a Imaging optics 22. Preferably and as shown in the color measurement module 21 of a color zone 12 more color sensor elements 24, which are arranged in an array 23 are that through the imaging optics 22 and each Color sensor element 24 each have a parallel image zone 19th is defined on the printing web part 3 'of the ink zone 12 and by the parallel image zones 19 detected by the array 23 an entire width of the printing web part 3 'optically full coverage is detectable. In the illustrated color measurement module 21 the imaging optics 22 is simply a common lens 22, through which an image zone for each color sensor element 24 19 on the print web part 3 'in the illuminated color measurement area 20 of the color measuring module 19 is defined. The color sensors 24a, 24b, 24c for different colors, eg. B. for red Green Blue (RGB), each in groups for multicolor measurement, z. In RGB groups; especially they can be spread over the chequerboard Be arranged receiving surface of the color sensor element 24, to a nationwide image zone detection 19 for all to ensure measuring colors RGB. The color sensor elements 24 in turn can simply linearly side by side be arranged to provide a nationwide coverage of the Color zone 12 with parallel image zones 19 to achieve. It is also possible, the color sensor elements 24 offset from each other to arrange (not shown).

Preferably, in the color sensor element 24 is for each measuring color value RGB at least one color sensor 24a, 24b, 24c present and arranged so that by the imaging optics 22 a belonging to the ink zone 12 printing web part 3 'on the printed product 3 nationwide optically from the Color sensors 24 a, 24 b, 24 c of the color sensor element 24th is detectable. The color sensors 24a, 24b, 24c may be CMOS based Detectors 24a, 24b, 24c, the good image properties and have low initial cost. The Color sensors 24a, 24b, 24c may also be single diodes 24a, 24b, 24c in a patterned photodiode. A structured photodiode covers on a monolithic Chip typically three single diode 24a, 24b, 24c, the are readable via separate electrical connections and through structured optical filters color-selective spectral Have sensitivities. The individual diodes 24a, 24b, 24c can z. B. be square and on a matrix be arranged in the photodiode chip or be hexagonal and be arranged honeycomb. The color sensor element 24 may include one or more patterned photodiodes.

Advantageously, the detection means 16a, 25, in particular the color measuring unit 16a of the color control system 15 and the measuring electronics 25 of the color measuring modules 21, a sufficient Frequency bandwidth up, so that in each primary Color measurement signal 26 at least individual lines of text and in particular at least single letter thicknesses the current printing machine 1 can be detected. The reference on lines of text and letter thicknesses here exclusively, to a relevant to the human eye indicate optical-spatial resolution. The color assessment however, full-tone text is usually not mandatory. Also, the control unit 15, 25 and in particular the detection means 16a, 25 enough Have capacity for data acquisition and data processing, to continuously capture the primary Color measurement signals 26 along the printing direction 4 and a complete monitoring of all to the ink zones 12th belonging print web parts 3 'on the printed product 3 to guarantee.

The integration means 16b, 25 can in the color control system 15 and / or directly in the color sensor element array 23 to be available. They preferably comprise discrimination agents for automatic recognition of the predefinable color image areas 3b moved in the direction of printing 4 Printed product 3 and for the elimination of the primary color measurement signal 26 outside the color image areas 3b. In addition, the control unit 15, 25 and in particular the integration means 16b, 25 and the Computing means 17 sufficient capacity for data processing to provide the color correction signal 28 for each color zone 12 and / or for each ink F1, ..., F4 to produce.

In the system according to the invention by a full-surface, fast primary color monitoring and a color area selective Signal integration large quantities of raw data on for the overall coverage with the relevant Printing ink F1, ..., F4 condensed representative data and derived therefrom reliable color correction signals 28. So is without color markings and with moderate computational effort realized an exact color control. The color control method and the color control device are preferably in web offset printing presses especially for Newspaper printing used. Also claimed is a printing press 1 with such a color control device.

LIST OF REFERENCE NUMBERS

1

Printing machine, 4-color web offset printing machine

1a

printing units

1b

Color units, color trolleys

2

printing rollers

3

Printing medium, printing paper, printed matter, newspaper web, print cut

3 '

Printing web in a color zone

3a

Text area (mostly black)

3b

Color Image Area (CMYK)

4

Passage direction, printing direction

5

color screw

6

segmented color stop

7

ink reservoir

8th

ink roller

9

Duktorenwalzen

10

Pressure roller with pressure plates, pressure plate roller

11

pressure cylinder

12

Shutter segment, color zone

13

Focal segmental edge

14

Control panel for printing unit

15

regulated color control system

16

color recognition

16a

Color measurement, image measurement

16b

Image processing, integrator for sensor signals

17

Color control, color control

18a

Original image, prepress, original artwork, OK copy

18b

Printing plate, original artwork

18c

print image

19

Image zones of a color measurement module

20

illuminated measuring area of a color measuring module

21

Color measurement module, incl. Optics and electronics

21 '

Color identifier

22

imaging optics

23

Color sensor element array

24

Color sensor element for multicolor measurement

24a, 24b, 24c

color sensors

25

Measuring electronics of the color measuring module

26

primary color measurement signals of the sensor elements, sensor signals, measurement data

27

preprocessed color measurement signal of the color measurement module, integral colorimetric signal

28

Color correction signals

F1, ..., F4

Colors, CMYK

Claims (13)

Method for controlling the coloration in a printing press (1), wherein each printing ink (F1, ..., F4) is regulated by a color control unit (1b) having a plurality of ink zones (12), wherein an actual coloration on the printed product (3) determined on-line during the printing process by means of a color recognition device (21 '), a target coloration on an original document (18a, 18b) is determined and from the resulting actual / target deviations for at least one ink (F1, ... , F4) and color zone (12) a color correction signal (28) for the associated color actuator (1b) of the printing press (1) is generated, characterized in that a) the color recognition device (21 ') comprises a plurality of color sensors (24a, 24b, 24c) for color measurement (16), which are arranged stationary on the printing press (1) and with which the actual coloration areally on a whole, with color printed width of the printed product (3) is measured and b) for each ink zone (12) of the printing machine (1) at least one fast primary colorimetry signal (26) is detected for at least one of the ink zones (12) from the primary colorimetric signal (26) by integration along a printing direction (4) over a predeterminable one Color image area (3b) of the printed product (3) in the ink zone (12) an integral color measurement signal (27) is formed from the integral color measurement signal (27) for at least one ink (F1, ..., F4) an entire actual area coverage of Color image area (3b) is determined in the color zone (12) and with the aid of the actual area coverage, the color correction signal (28) for the color zone (12) and ink (F1, ..., F4) is generated. The method according to claim 1, characterized in that in at least one of the ink zones (12) a) with the color sensors (24a, 24b, 24c) color values (RGB) are measured on the printed product (3), wherein for associated color values (RGB), which form coordinates of an abstract color point in a color space, respectively the primary color measurement signal (26) and the integral color measurement signal (27) is formed, and the actual area coverage for at least one of the printing colors (F1; ...; F4) is calculated from the integral color measurement signals (27) associated color values (RGB) and as the actual coloration in Regulatory method is used and / or b) a plurality of image zones (19) are defined, wherein for each image zone (19) separate primary color measurement signals (26) are detected and the integral color measurement signal (27) by integration and addition of the primary color measurement signals (26) is formed. Method according to one of the preceding claims, characterized in that a) the primary color measurement signal (26) is detected so fast or faster that at least individual lines of text and in particular at least individual letter thicknesses can be detected and / or b) the primary color measurement signal (26) along the printing direction (4) is detected continuously and thereby to the ink zone (12) belonging print web part (3 ') on the printed product (3) in the printing direction (4) over the entire surface is monitored. Method according to one of the preceding claims, characterized in that the integration over an entire print image (18c) of the printed product (3) and in particular over several in the printing direction (4) successively arranged entire printed images (18c) of the printed product (3) is executed. Method according to one of claims 1-3, characterized in that a) the primary color measurement signal (26) in printing areas (3a) with exclusively full-tone text on the printed product (3) is not further processed and / or b) the integral color measurement signal (27) for each color image area (3b) of the printed product (3) is formed. Method according to one of the preceding claims, characterized in that a) for all ink zones (12) the integral color measurement signals (27) are formed, the actual surface coverage of an ink (F1, ..., F4) are determined and from the actual area coverage and target area coverage all color correction signals (28) for the inking station (1b) of the printing ink (F1, ..., F4) are produced and / or b) from the integral color measurement signal (27) of a color zone (12) the actual area coverage for all printing inks (F1, ..., F4) of the printing press (1) are determined and from the actual area coverage and target area coverage the color correction signals ( 28) for this ink zone (12) for all inking stations (1b) of the printing press (1) are generated. Device for controlling the coloration in a printing machine (1), in particular for carrying out the method according to one of the preceding claims, wherein the printing press (1) for each printing ink (F1, ..., F4) comprises a color control station (1b) having a plurality of ink zones (1). 12), comprising a color recognition device (21 ') for determining an actual coloration on a printed product (3) on-line during the printing operation and a control unit (15, 25) for determining a deviation of the actual coloration from a desired coloration and for generating color correction signals (28) for at least one printing ink (F1, ..., F4) and inking zone (12) for controlling at least one of the inking stations (1b), characterized in that a) the color recognition device (21 ') comprises a plurality of color sensors (24a, 24b, 24c) for color measurement (16), which are arranged stationary on the printing press (1) and with which the actual coloration areally on a whole, with color printed width of the printed product (3) is measurable and b) the control unit (15, 25) detecting means (16a, 25) for at least one fast primary colorimetry signal (26) per color zone (12), integrating means (16b, 25) for at least one color zone (12) for integrating the primary colorimetric signal ( 26) selectively over a predeterminable color image area (3b) of the printed product (3) in the ink zone (12) and computing means (17) for determining a total actual area coverage for at least one of the printing inks (F1, ..., F4) in the color image area (3b) in the color zone (12) and for generating the color correction signal (28) for the color zone (12) and ink (F1, ..., F4) from the actual area coverage and a target area coverage comprises. The device according to claim 7, characterized in that a) the color recognition device (21 ') for each ink zone (12) of the printing machine (1) comprises at least one separate stationary color measuring module (21) with at least one color sensor element (24) and with an imaging optics (22) and b) in the color sensor element (24) for each color value to be measured (RGB) at least one color sensor (24a, 24b, 24c) is present and arranged so that by the imaging optics (22) belonging to the ink zone (12) Druckbahnteil (3 '. ) is comprehensively optically detectable on the printed product (3) by the color sensors (24a, 24b, 24c) of the color sensor element (24). The device according to one of claims 7-8, characterized in that in the color measurement module (21) of one of the ink zones (12) a plurality of color sensor elements (24) are present and are arranged in an array (23) that by the imaging optics (22 ) and each color sensor element (24) in each case an image zone (19) on the print web part (3 ') of the ink zone (12) is defined and by the array (23) detected image zones (19) an entire width of the print web part (3') optically comprehensible nationwide. The device according to one of claims 7-9, characterized in that a) the detection means (16a, 25) have a sufficient frequency bandwidth, so that in each primary color measurement signal (26) at least individual text lines and in particular at least individual letter thicknesses are detectable and / or b) the control unit (15, 25) and in particular the detection means (16a, 25) have sufficient capacity for data acquisition and data processing to continuously detect the primary color measurement signals (26) along a print direction (4) and to completely monitor all of the color zones (12) belonging printing web parts (3 ') on the printed product (3) to ensure. The device according to one of claims 7-10, characterized in that a) the integration means (16b, 25) comprise discrimination means for detecting the prescribable color image areas (3b) and for eliminating the primary color measurement signal (26) outside the color image areas (3b) and / or b) the control unit (15, 25) and in particular the integration means (16b, 25) and the computing means (17) have sufficient capacity for data processing to the color correction signal (28) for each color zone (12) and / or for each ink (F1 , ..., F4). Printing machine, characterized by a device according to one of claims 7-11. The printing machine according to claim 12, characterized in that it is a web offset printing press, in particular for newspaper printing.

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