EP0142470B1 - Verfahren und Vorrichtung zur Beurteilung der Druckqualität eines vorzugsweise auf einer Offset-Druckmaschine hergestellten Druckerzeugnisses und mit einer entsprechenden Vorrichtung ausgestattete Offset-Druckmaschine - Google Patents

Verfahren und Vorrichtung zur Beurteilung der Druckqualität eines vorzugsweise auf einer Offset-Druckmaschine hergestellten Druckerzeugnisses und mit einer entsprechenden Vorrichtung ausgestattete Offset-Druckmaschine Download PDF

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Publication number
EP0142470B1
EP0142470B1 EP84810523A EP84810523A EP0142470B1 EP 0142470 B1 EP0142470 B1 EP 0142470B1 EP 84810523 A EP84810523 A EP 84810523A EP 84810523 A EP84810523 A EP 84810523A EP 0142470 B1 EP0142470 B1 EP 0142470B1
Authority
EP
European Patent Office
Prior art keywords
printing
color
reflectance
process according
printed product
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP84810523A
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German (de)
English (en)
French (fr)
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EP0142470A1 (de
Inventor
Hans Ott
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gretag AG
Original Assignee
Gretag AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Gretag AG filed Critical Gretag AG
Priority to AT84810523T priority Critical patent/ATE31673T1/de
Publication of EP0142470A1 publication Critical patent/EP0142470A1/de
Application granted granted Critical
Publication of EP0142470B1 publication Critical patent/EP0142470B1/de
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F33/00—Indicating, counting, warning, control or safety devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F33/00—Indicating, counting, warning, control or safety devices
    • B41F33/0027—Devices for scanning originals, printing formes or the like for determining or presetting the ink supply
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F33/00—Indicating, counting, warning, control or safety devices
    • B41F33/0036—Devices for scanning or checking the printed matter for quality control

Definitions

  • the invention relates to a method and a device for assessing the print quality of a printed product, preferably produced on an offset printing machine, according to the preamble of claim 1 and 16, and to an offset printing machine equipped with a corresponding device, according to the preamble of claim 21.
  • the assessment of the print quality and regulation of the color routing is usually carried out with the help of standardized color control strips. These printed control strips are evaluated densitometrically and the color values of the printing press are then adjusted accordingly.
  • the dimension of the color control strips can be on the running machine with so-called machine densitometers or off-line by means of e.g. B. an automatic scanning densitometer, the control loop to the inking units in both cases open (quality assessment) or closed (machine control).
  • a representative example of a computer controlled printing machine with a closed control loop is u. a. in U.S. Patent Nos. 4200932 and 3835777.
  • the decision criteria include the number of picture elements which differ from the corresponding picture elements of the reference by more than a certain degree of tolerance, the differences in the sampled values summed up over selected image areas to the corresponding sampled values of the reference and the differences between the sampled values summed up via certain scan tracks corresponding values of the reference.
  • GB-A-2115145 also does not disclose any method comparable to the invention, since the differences formed from the target / actual value comparison are subjected to a threshold value comparison immediately thereafter, whether the differences are still acceptable or not. These differences are not multiplied for conversion into other color spaces, not because there are only fluctuations in brightness.
  • the overall system shown in Fig. 1 comprises a four-f arben offset printing machine 100, three fotoeleldhari scanning devices 120, 220, 320, three computers 150, 250 and 350 and four optical display devices 171, 172, 270 and 370.
  • the offset printing press 100 is of conventional design, its ink guide elements 111-114 (ink fountain keys, etc.) are only indicated symbolically in the drawing.
  • the scanner 120 is a so-called machine densitometer built into the printing press 100 with four scanning channels 121-124 for each printing ink. With this scanning device, printed products can be measured densitometrically on the running printing press. Examples of suitable machine densitometers are u. a. in U.S. Patent Nos. 2968988, 3376426, 3835777, 3890048 and 4003660. In the following, the scanning device 120 is briefly referred to as “machine densitometer 120”.
  • the scanning device 220 is used for the photoelectric measurement of printing plates or raster films on which they are based.
  • the scanner 220 may e.g. B. a commercial scanner ("scanner"), as used for lithofilms, or any other suitable scanning device, for example according to US Pat. Nos. 3958509 and 4131879 or EP-Publ. Nos. 69572, 96227 and 29561, which allows printing plates or halftone films to be photoelectrically scanned with the resolution specified below.
  • the scanning device 220 is referred to in the following, regardless of its type and the object actually scanned, as a "plate scanner 220".
  • the scanner 320 is used for photoelectric measurement of z. B. after visual assessment for qualitatively satisfactory printed products, so-called proof sheets or OK sheets.
  • This scanning device scans the pressure sheets or OK sheets in exactly the same way as the machine densitometer 120 the printed products and is therefore constructed accordingly.
  • OK sheets can be scanned directly and even advantageously directly from the machine densitometer 120 in the printing press 100.
  • this scanning device referred to below as “OK sheet scanner 320”, is shown as a separate element.
  • the four optical display devices 171, 172, 270 and 370 are preferably color television monitors, which allow a visual representation of the measured values recorded by the scanning devices or the data determined therefrom by the computers.
  • four separate display devices are not absolutely necessary, these are only drawn for ease of understanding.
  • the system could also have only a single computer instead of three, which would then have to operate all connected scanning devices, display devices, etc.
  • the plate scanner 220 with its computer 250 and its display device 270 and the OK sheet scanner 320 with its computer 350 and its display device 370 can also form independent units, which then, for. B. would be connected via cable 251 or 351 to the computer 150. All of these possibilities are indicated in Fig. 1 by the dashed frames. They are completely irrelevant to the invention and the invention is in no way limited to them.
  • the printed products D (sheets) and the printing plates D on which they are based are divided in the same way into a plurality of picture elements E (FIG. 2).
  • each picture element E of the (here four) printing plates P is now measured photoelectrically and a remission target value R s is calculated for each picture element E from the measured values to be explained, which the relevant picture element E of the printed products for should have the respective printing color if printing is carried out under normal conditions, ie with correctly adjusted inking, etc.
  • the printed products D are photoelectrically scanned on the running machine by means of the machine densitometer 120 (or also individual sheets off-line on a separate scanning device, for example the OK sheet scanner 320) and fine remissions for each printing ink and for each picture element Actual value R; certainly.
  • control variables (manipulated values) ST for influencing the ink guiding elements 111-114 of the printing press 100 can also be calculated and the ink guiding of the printing press can thus be regulated.
  • the display devices 270, 171, 172 and 370 can be used to display the sample values or the values calculated therefrom.
  • Device 270 can, for example, cover the area or the brightness distribution of the individual printing plates P determined therefrom, device 370 the brightness distribution of the OK sheets, device 171 the remission target values R s and device 172 the differences between remission target values R s and remission actual values R; Show.
  • the display devices can also be used to display all possible other data of interest.
  • the method according to the invention is thus based on the knowledge that under offset conditions it is possible, under certain conditions, to predict the remission target value of a picture element of the printed product for the individual printing inks from the area coverage of the picture element in question in the respective printing plate (or the corresponding raster film).
  • These prerequisites include, on the one hand, knowledge of the characteristic of the printing press and the influence of the solid color density on the change in reflectance depending on the areas cover, and on the other hand, that the picture elements are sufficiently small to come to meaningful results.
  • the printing characteristic which takes into account all influences such as paper quality, printing ink, dot gain, ink acceptance, overprinting, wet-on-wet printing, etc., can be determined empirically relatively easily.
  • Tables are created for the remission target value of the printed product as a function of the area coverage of the printing plates.
  • the table values are obtained by measuring standardized color tables, which are printed under representative conditions on the respective printing press. For the measurement of these color charts, that scanner is preferably used with which the printed products are later also measured during operation, in the present case the machine densitometer 120.
  • the influence of the solid tone density on the remission change due to the dot gain can also be recorded using tables.
  • the above-mentioned color charts are used under appropriate printing conditions, i.e. H. printed with varying solid density of all printing inks.
  • the picture elements E In order to achieve the highest possible accuracy, the picture elements E must be chosen to be as small as possible. A natural lower limit is given by the grid fineness (e.g. 60 lines per cm). In practice, however, this lower limit cannot be reached for technical and, above all, economic reasons. This applies above all to the measurement of the printed products D on the running machine, since the amount of data that arises under the usual sheet formats in the short time available cannot be recorded and processed with economically justifiable effort. There would also be significant positioning difficulties.
  • Image elements E of approximately 25 to 400 mm 2 in area are acceptable for remission measurements on the running printing press. Practically, a picture element E z. B. be square with about 1 cm 2 area. With image elements E of this size, however, the predetermination of the remissions taking into account the overprinting based on the surface coverings of the printing plate becomes too imprecise.
  • each individual element E of the printing plate P (or the raster films on which it is based) is therefore divided into a larger number, e.g. B. 100, sub-elements SE and determines the area coverage for each of these sub-elements.
  • the determination of the area coverage for the image elements of the printing plates is therefore carried out with a higher resolution than the remission determination of the image elements of the printed products.
  • the size of the sub-elements SE can be approximately 0.25 to 25 mm 2 , a practical example is approximately 1 mm 2 based on a picture element size of approximately 1 cm 2 .
  • each individual sub-element SE is determined by means of the plate scanner 220 in a manner known per se, e.g. B. by remission measurement integrally over the area of the sub-element or by means of television scanning or scanning by means of discrete photo sensor fields or the like a remission subset RS S is calculated (intermediate table values can be found by interpolation). From the individual remission subsets RS S of each picture element E is then. B. arithmetic averaging of the remission target value R s of the relevant picture element E, which for comparison with the corresponding remission actual values R; the printed matter D is required.
  • each sub-element SE is assigned a sub-full weight factor GS e that takes this influence into account.
  • These weighting factors contain the required change in full tone (change in layer thickness) for each printing ink for a desired change in reflectance, taking into account the overprinting and the local area coverage.
  • the weighting factors can be determined from tables for the full tone change as a function of the reflectance change. These tables can be determined from the table values for the reflectance as a function of the solid density (see influence of solid density).
  • a sensory weight factor H e (or sub-sensory weight factor HS e ) to each individual image element E (or possibly also to each sub-element SE), which represents a sensory-metrical evaluation standard for deviations from the target value and actual value.
  • This sensation ge weight factors can include B. according to CIELAB (Comite International de l'Eclairage) from the sensory metrics L * , a * , b * defined there.
  • a quality measure Q is calculated and displayed in a suitable manner.
  • This quality measure can be calculated, for example, in such a way that the deviations ⁇ e are weighted with the respectively assigned full tone and / or perceptual weighting factor G e or H e and added (integrated) over one or more selected surface areas of the printed product.
  • the surface areas can be adapted to the respective printed product. It is also possible to achieve several quality measures in this way.
  • the print zones Z (FIG. 2) specified by the printing press form a special role as surface areas.
  • the control variables ST are preferably determined individually for each individual printing zone by the deviations ⁇ e of the actual remission values R ; weighted with the full tone weight factors G e . of the remission nominal values R s of the picture elements E are summed (integrated) over the entire respective printing zone Z.
  • the control variables ST are preferably determined individually for each individual printing zone by the deviations ⁇ e of the actual remission values R ; weighted with the full tone weight factors G e . of the remission nominal values R s of the picture elements E are summed (integrated) over the entire respective printing zone Z.
  • other evaluation and calculation methods are also possible here.
  • the area coverage determined by the plate scanner 220 can be integrated via the individual pressure zones Z and z. B. as described in US-PS 3185088 for presetting the color guide members.
  • the remission target values R are calculated in advance; of the individual image elements E on the basis of the area coverage of the corresponding image elements of the individual printing plates P or, if the measurements on these cannot be carried out for any reason, the corresponding raster films on the basis of which the printing plates were produced.
  • a printed product that is found to be good a so-called OK sheet OKB
  • OK sheet OKB can also be used as a basis for comparison. This would then no longer need to be scanned with the same resolution as the printing plate P, since only the remissions in the individual picture elements are of interest. These remissions can be determined either using the OK sheet scanner 320, or else using the plate scanner 220, if they are not already stored.
  • the weight factors G e and / or H e assigned to the individual picture elements can be adopted from the earlier measurement of the printing plate P.
  • the densitometric measurement of the printed products D on the running machine can take place in various ways, as long as it is ensured that the remission or remission change of each image element is recorded for each color. It is not absolutely necessary for each individual printed product D to be measured completely, but a sequential measurement of different image elements on successive printed products is also sufficient. Furthermore, e.g. B. each individual color can be measured according to the respective inking unit or the remissions in the individual printing inks can be determined together on the finished printed product. A double measurement before and after each individual inking unit is particularly expedient, since in this way the influence of the respective color can be recorded particularly precisely.

Landscapes

  • Quality & Reliability (AREA)
  • Engineering & Computer Science (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Accessory Devices And Overall Control Thereof (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
  • Dot-Matrix Printers And Others (AREA)
  • Spectrometry And Color Measurement (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
  • Measuring Fluid Pressure (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Handling Of Sheets (AREA)
  • Character Spaces And Line Spaces In Printers (AREA)
  • Screen Printers (AREA)
  • Sewing Machines And Sewing (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Dry Development In Electrophotography (AREA)
EP84810523A 1983-11-04 1984-10-29 Verfahren und Vorrichtung zur Beurteilung der Druckqualität eines vorzugsweise auf einer Offset-Druckmaschine hergestellten Druckerzeugnisses und mit einer entsprechenden Vorrichtung ausgestattete Offset-Druckmaschine Expired EP0142470B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84810523T ATE31673T1 (de) 1983-11-04 1984-10-29 Verfahren und vorrichtung zur beurteilung der druckqualitaet eines vorzugsweise auf einer offset-druckmaschine hergestellten druckerzeugnisses und mit einer entsprechenden vorrichtung ausgestattete offset-druckmaschine.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH5965/83 1983-11-04
CH596583 1983-11-04

Publications (2)

Publication Number Publication Date
EP0142470A1 EP0142470A1 (de) 1985-05-22
EP0142470B1 true EP0142470B1 (de) 1988-01-07

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ID=4302229

Family Applications (2)

Application Number Title Priority Date Filing Date
EP84810522A Expired EP0142469B1 (de) 1983-11-04 1984-10-29 Verfahren und Vorrichtung zur Regelung der Farbführung bei einer Offset-Druckmaschine und mit einer entsprechenden Vorrichtung ausgestattete Offset-Druckmaschine
EP84810523A Expired EP0142470B1 (de) 1983-11-04 1984-10-29 Verfahren und Vorrichtung zur Beurteilung der Druckqualität eines vorzugsweise auf einer Offset-Druckmaschine hergestellten Druckerzeugnisses und mit einer entsprechenden Vorrichtung ausgestattete Offset-Druckmaschine

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EP84810522A Expired EP0142469B1 (de) 1983-11-04 1984-10-29 Verfahren und Vorrichtung zur Regelung der Farbführung bei einer Offset-Druckmaschine und mit einer entsprechenden Vorrichtung ausgestattete Offset-Druckmaschine

Country Status (11)

Country Link
US (2) US4665496A (no)
EP (2) EP0142469B1 (no)
JP (3) JPS60176765A (no)
AT (2) ATE31673T1 (no)
AU (2) AU578431B2 (no)
CA (2) CA1217274A (no)
DE (2) DE3465930D1 (no)
DK (2) DK159958C (no)
ES (2) ES8600625A1 (no)
NO (2) NO163601C (no)
ZA (3) ZA848573B (no)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4649502A (en) * 1983-11-04 1987-03-10 Gretag Aktiengesellschaft Process and apparatus for evaluating printing quality and for regulating the ink feed controls in an offset printing machine
GB2222880A (en) * 1988-08-11 1990-03-21 Polygraph Leipzig Method of determining areal coverage of primary colours in measuring segments of multi-coloured print originals in an offset printing
GB2229019A (en) * 1989-02-10 1990-09-12 Heidelberger Druckmasch Ag Controlling printing ink values
EP0527285A2 (de) * 1991-08-12 1993-02-17 KOENIG & BAUER-ALBERT AKTIENGESELLSCHAFT Verfahren zum Beurteilen von bedruckten Bogen
EP0763426A2 (de) * 1995-09-13 1997-03-19 Heidelberger Druckmaschinen Aktiengesellschaft Verfahren zum Regeln der Farbgebung beim Drucken mit einer Druckmaschine
DE19632969A1 (de) * 1996-08-16 1998-02-19 Roland Man Druckmasch Verfahren zur Ermittlung von Vorgabewerten für die Steuerung einer Druckmaschine
DE19701967A1 (de) * 1997-01-22 1998-07-23 Andreas Paul Verfahren zur Bestimmung der farblichen Erscheinung sowie entsprechende Vorrichtung
US5791251A (en) * 1995-04-27 1998-08-11 Heidelberger Druckmaschinen Ag Method of regulating ink-feeding or inking in printing
US5812705A (en) * 1995-02-28 1998-09-22 Goss Graphic Systems, Inc. Device for automatically aligning a production copy image with a reference copy image in a printing press control system
US5816151A (en) * 1995-09-29 1998-10-06 Goss Graphic Systems, Inc. Device for alignment of images in a control system for a printing press
US5903712A (en) * 1995-10-05 1999-05-11 Goss Graphic Systems, Inc. Ink separation device for printing press ink feed control
EP0920994A2 (de) * 1997-11-06 1999-06-09 Heidelberger Druckmaschinen Aktiengesellschaft Verfahren zur Gewinnung von Farbmesswerten
EP2439071A1 (en) 2010-10-11 2012-04-11 KBA-NotaSys SA Color control pattern for the optical measurement of colors printed on a sheet-like or web-like substrate by means of a multicolor printing press and uses thereof

Families Citing this family (70)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0142469B1 (de) * 1983-11-04 1987-09-09 GRETAG Aktiengesellschaft Verfahren und Vorrichtung zur Regelung der Farbführung bei einer Offset-Druckmaschine und mit einer entsprechenden Vorrichtung ausgestattete Offset-Druckmaschine
ATE58336T1 (de) * 1983-12-19 1990-11-15 Gretag Ag Verfahren, vorrichtung und farbmessstreifen fuer die druckqualitaetsbeurteilung.
JPS60250958A (ja) * 1984-05-29 1985-12-11 Toppan Printing Co Ltd 印刷物検査用基準情報設定装置
JPS60250957A (ja) * 1984-05-29 1985-12-11 Toppan Printing Co Ltd 印刷物検査用基準情報設定装置
DD253679A1 (de) * 1986-11-13 1988-01-27 Polygraph Leipzig Verfahren zum regeln der farbdichte
US5182721A (en) * 1985-12-10 1993-01-26 Heidelberger Druckmaschinen Aktiengesellschaft Process and apparatus for controlling the inking process in a printing machine
ATE47564T1 (de) * 1985-12-10 1989-11-15 Heidelberger Druckmasch Ag Verfahren zur farbauftragssteuerung bei einer druckmaschine, entsprechend ausgeruestete druckanlage und messvorrichtung fuer eine solche druckanlage.
US4860226A (en) * 1986-09-09 1989-08-22 Martin Edward L Method and apparatus for bar code graphics quality control
DE3631204C2 (de) * 1986-09-13 1993-11-25 Roland Man Druckmasch Vorrichtung an Druckmaschinen zur densitometrischen Erfassung eines Meßfeldstreifens
US4947348A (en) * 1987-03-25 1990-08-07 Kollmorgen Corporation Densitometer method and system for identifying and analyzing printed targets
FR2623905B1 (fr) * 1987-11-30 1992-02-14 David Michel Appareil pour determiner la formulation de peinture pour reparation de carrosserie
US4967379A (en) * 1987-12-16 1990-10-30 Gretag Aktiengesellschaft Process for the ink control or regulation of a printing machine by comparing desired color to obtainable color data
DE58901780D1 (de) * 1988-01-14 1992-08-13 Gretag Ag Verfahren und vorrichtung zur farbregelung einer druckmaschine.
DE3804941A1 (de) * 1988-02-17 1989-08-31 Hell Rudolf Dr Ing Gmbh Verfahren und einrichtung zur erfassung von druckflaechendeckungsdaten
DE3812099C2 (de) * 1988-04-12 1995-01-26 Heidelberger Druckmasch Ag Verfahren zur Farbsteuerung einer Offsetdruckmaschine
JPH01310485A (ja) * 1988-06-08 1989-12-14 Dainippon Printing Co Ltd 欠陥情報検出装置
US4959790A (en) * 1988-06-28 1990-09-25 F & S Corporation Of Columbus, Georgia Apparatus and method for producing color corrected reproduction of colored original images
DD274786A1 (de) * 1988-08-11 1990-01-03 Adw Ddr Kybernetik Inf Verfahren und anordnung zur ueberwachung der druckqualitaet mehrfarbiger rasterdruckvorlagen einer offset-druckmaschine
DE3924989A1 (de) * 1989-07-28 1991-02-07 Roland Man Druckmasch Vorrichtung zur durchfuehrung einer umfassenden qualitaetskontrolle an druckbogen
ATE151583T1 (de) * 1990-02-05 1997-04-15 Scitex Corp Ltd Geräte und verfahren zur verarbeitung von daten, wie zum beispiel farbbildern
DE4004056A1 (de) * 1990-02-10 1991-08-14 Roland Man Druckmasch Verfahren und vorrichtung zur farbsteuerung und zonenweisen voreinstellung
JPH04226762A (ja) * 1990-12-28 1992-08-17 Sannichi Insatsu:Kk 印刷管理方法
DK0495563T4 (da) † 1991-01-15 2004-11-15 Creo Il Ltd Anordning og teknikker for computerstyret bogtryk
DE59208787D1 (de) * 1991-03-21 1997-09-18 Wifag Maschf Verfahren zur Einstellung der Rasterpunktgrössen für eine Offset-Rotationsdruckmaschine
DE4122794A1 (de) * 1991-07-10 1993-01-14 Roland Man Druckmasch Verfahren zur ueberwachung und regelung des druckprozesses,insbesondere an offsetdruckmaschinen
US5317425A (en) * 1992-02-10 1994-05-31 Eastman Kodak Company Technique for use in conjunction with an imaging system for providing an appearance match between two images and for calibrating the system thereto
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DE4229267A1 (de) * 1992-09-02 1994-03-03 Roland Man Druckmasch Verfahren zur Steuerung des Druckprozesses auf einer autotypisch arbeitenden Druckmaschine, insbesondere Bogenoffsetdruckmaschine
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FI95888C (fi) * 1993-04-26 1996-04-10 Valtion Teknillinen Menetelmä painatuksen laadun valvomiseksi
JPH0724444A (ja) * 1993-05-28 1995-01-27 Kubo Gijutsu Jimusho:Kk シャワーに取付用の電気石担持物入りアダプターとカートリッジ
DE4321177A1 (de) * 1993-06-25 1995-01-05 Heidelberger Druckmasch Ag Vorrichtung zur parallelen Bildinspektion und Farbregelung an einem Druckprodukt
CA2107431A1 (en) * 1993-09-30 1995-03-31 Arthur L. Rosbottom Process and apparatus for colour data evaluation
DE4335350A1 (de) * 1993-10-16 1995-04-20 Heidelberger Druckmasch Ag Verfahren und Vorrichtung zur Ermittlung von Passerabweichungen bei mehrfarbigen, in einer Druckmaschine erstellten Druckprodukten
DE4335351C2 (de) * 1993-10-16 2003-04-30 Heidelberger Druckmasch Ag Verfahren und Vorrichtung zur Kompensation von Passerabweichungen in einer Offsetrotationsdruckmaschine
DE4431270C2 (de) * 1993-10-21 1997-01-16 Roland Man Druckmasch Verfahren zur Steuerung der Farbführung einer autotypisch arbeitenden Druckmaschine
US5816164A (en) * 1994-04-20 1998-10-06 Heidelberger Druckmaschinen Ag Method and apparatus for monitoring image formation on a printing form
DE19645005A1 (de) * 1995-11-01 1997-05-07 Samsung Electronics Co Ltd Verfahren zur Farbtemperaturbestimmung für eine Farbanzeigevorrichtung
US5818453A (en) * 1996-01-05 1998-10-06 Weavexx Corporation System for evaluating print quality for a sheet
IT1284432B1 (it) * 1996-03-22 1998-05-21 De La Rue Giori Sa Procedimento di controllo automatico della qualita' di stampa di un'immagine policroma
DE19617016A1 (de) * 1996-04-27 1997-11-27 Thomas Fuchs Verfahren zur Steuerung der Farbgebung einer Druckmaschine
JP3042193U (ja) * 1996-06-07 1997-10-14 東洋ブラシ工業株式会社 イオストーン歯ブラシ
US6024020A (en) * 1996-08-21 2000-02-15 Agfa Corporation Fluorescence dot area meter for measuring the halftone dot area on a printing plate
DE19703129B4 (de) * 1997-01-29 2014-08-21 Heidelberger Druckmaschinen Ag Verfahren zur Bewertung der Qualität eines im Mehrfarbendruck auf einem Bedruckstoff erzeugten Druckbildes
US5791249A (en) * 1997-03-27 1998-08-11 Quad/Tech, Inc. System and method for regulating dampening fluid in a printing press
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GB2222880A (en) * 1988-08-11 1990-03-21 Polygraph Leipzig Method of determining areal coverage of primary colours in measuring segments of multi-coloured print originals in an offset printing
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US5089977A (en) * 1989-02-10 1992-02-18 Heidelberger Druckmaschinen Ag Process for controlling the inking of printed products and apparatus for performing the process
EP0527285A2 (de) * 1991-08-12 1993-02-17 KOENIG & BAUER-ALBERT AKTIENGESELLSCHAFT Verfahren zum Beurteilen von bedruckten Bogen
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US5802978A (en) * 1995-09-13 1998-09-08 Heidelberger Druckmaschinen Ag Method for regulating inking when printing with a printing press
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EP0825023A2 (de) * 1996-08-16 1998-02-25 MAN Roland Druckmaschinen AG Verfahren zur Ermittlung von Vorgabewerten für die Steuerung einer Druckmaschine
DE19632969C2 (de) * 1996-08-16 1999-04-29 Roland Man Druckmasch Verfahren zur Ermittlung von Vorgabewerten für die Herstellung von mehrfarbigen Druckexemplaren auf einer Druckmaschine
DE19632969A1 (de) * 1996-08-16 1998-02-19 Roland Man Druckmasch Verfahren zur Ermittlung von Vorgabewerten für die Steuerung einer Druckmaschine
US6611357B2 (en) 1996-08-16 2003-08-26 Man Roland Druckmaschinen Ag Method of stipulating values for use in the control of a printing machine
DE19701967A1 (de) * 1997-01-22 1998-07-23 Andreas Paul Verfahren zur Bestimmung der farblichen Erscheinung sowie entsprechende Vorrichtung
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EP0920994A2 (de) * 1997-11-06 1999-06-09 Heidelberger Druckmaschinen Aktiengesellschaft Verfahren zur Gewinnung von Farbmesswerten
EP0920994A3 (de) * 1997-11-06 1999-11-10 Heidelberger Druckmaschinen Aktiengesellschaft Verfahren zur Gewinnung von Farbmesswerten
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EP2439071A1 (en) 2010-10-11 2012-04-11 KBA-NotaSys SA Color control pattern for the optical measurement of colors printed on a sheet-like or web-like substrate by means of a multicolor printing press and uses thereof
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AU3496684A (en) 1985-05-09
CA1217274A (en) 1987-01-27
DK159959C (da) 1991-06-03
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ZA848572B (en) 1985-06-26
DK522284A (da) 1985-05-05
NO163602B (no) 1990-03-19
US4660159A (en) 1987-04-21
ZA848573B (en) 1985-06-26
DK159959B (da) 1991-01-07
DK159958C (da) 1991-06-03
EP0142469B1 (de) 1987-09-09
AU3496784A (en) 1985-05-09
CA1217273A (en) 1987-01-27
ATE31673T1 (de) 1988-01-15
ES537316A0 (es) 1985-10-16
AU577068B2 (en) 1988-09-15
AU578431B2 (en) 1988-10-27
ES8600625A1 (es) 1985-10-16
DK522184A (da) 1985-05-05
NO844369L (no) 1985-05-06
ES8507044A1 (es) 1985-09-16
DE3468367D1 (en) 1988-02-11
JPH0522579B2 (no) 1993-03-30
NO163601C (no) 1990-06-27
DK522184D0 (da) 1984-11-02
JPS60114728A (ja) 1985-06-21
EP0142469A1 (de) 1985-05-22
JPS60110451A (ja) 1985-06-15
JPS60176765A (ja) 1985-09-10
DK159958B (da) 1991-01-07
DK522284D0 (da) 1984-11-02
NO163601B (no) 1990-03-19
JPH0522580B2 (no) 1993-03-30
ATE29434T1 (de) 1987-09-15
US4665496A (en) 1987-05-12
DE3465930D1 (en) 1987-10-15
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NO163602C (no) 1990-06-27
NO844368L (no) 1985-05-06

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