EP1084843A1 - Dispositif pour l'analyse densitométrique de produits imprimés - Google Patents

Dispositif pour l'analyse densitométrique de produits imprimés Download PDF

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Publication number
EP1084843A1
EP1084843A1 EP00117892A EP00117892A EP1084843A1 EP 1084843 A1 EP1084843 A1 EP 1084843A1 EP 00117892 A EP00117892 A EP 00117892A EP 00117892 A EP00117892 A EP 00117892A EP 1084843 A1 EP1084843 A1 EP 1084843A1
Authority
EP
European Patent Office
Prior art keywords
measuring
color
fields
color density
zone
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.)
Granted
Application number
EP00117892A
Other languages
German (de)
English (en)
Other versions
EP1084843B1 (fr
Inventor
Peter Schramm
Joachim Müller
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.)
Manroland AG
Original Assignee
MAN Roland Druckmaschinen 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 MAN Roland Druckmaschinen AG filed Critical MAN Roland Druckmaschinen AG
Publication of EP1084843A1 publication Critical patent/EP1084843A1/fr
Application granted granted Critical
Publication of EP1084843B1 publication Critical patent/EP1084843B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B41F33/0036—Devices for scanning or checking the printed matter for quality control
    • B41F33/0045—Devices for scanning or checking the printed matter for quality control for automatically regulating the ink supply
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2233/00—Arrangements for the operation of printing presses
    • B41P2233/50—Marks on printed material
    • B41P2233/51—Marks on printed material for colour quality control

Definitions

  • the invention relates to a device for densitometric Measuring printed products according to the preamble of claim 1.
  • measuring fields for the individual colors are also printed.
  • the measuring strips produced Start of print or end of print assigned.
  • One of the display removed sheet can then be placed on a base and in addition to the visual quality inspection by a traversing Densitometer can be measured. While traversing the densitometer has a lot of measurement data, i.e. provide the measuring fields assigned to the individual colors one or more color density values each.
  • the structure also corresponds to the zonal color dosage of such a color measuring strip the ink metering zones Printing press adapted. This is the case with known color density measuring strips One measuring field per color is assigned to each color metering zone.
  • Measuring fields of the basic colors cyan, magenta, yellow, black
  • the measuring fields for these special colors are preferably provided in each ink metering zone, i.e. at four basic and two special colors are in each color metering zone a total of 6 differently colored measuring fields plus any additional ones Quality inspection fields arranged.
  • the arrangement of the measuring fields assigned to the individual colors is in the metering zones with the known color measuring strips differently. This means that for example assigned to the color cyan in the first color metering zone Measuring field is arranged at the third measuring field position, in another place in the second ink metering zone (e.g. 5) occupies.
  • the arrangement of the assigned to the individual colors Measuring field positions thus varies within the Color metering zones, so that the maximum format width looks at every color or measuring field at the edges, is more in the middle of a paint metering zone.
  • a color measuring strip for sheet or printed products smaller formats (format width) used, so the measuring strip begins - centering of the measuring strip to Machine center - not with the first ink metering zone but instead with a measuring field of a certain color in one of each used printing format corresponding dosing zone.
  • Another way to take into account different formats result in different assignment of measuring fields in the individual dosing zones is one manual entry, where or in which zone the first one, for example Cyan-colored, measuring field lies.
  • the operator has for this purpose before measuring a first sheet of the measuring system to enter via controls that for the given format in Direction of measurement of the densitometer the cyan measuring field in the first zone of the arch is in position 3 or that in Direction of measurement of the densitometer the first measuring field of the zone far left, for example, has the color magenta.
  • Information is then taking into account the known Measuring strip dismantling (assignment / arrangement of the individual different colored measuring fields in the dosing zones) can be determined, in which dosing zone the measuring strip begins.
  • Color measuring strips arranged according to the substrate format has the disadvantage that by incorrect input incorrect measurement values obtained or the measurement values obtained not assigned to the corresponding ink metering zones can be. Deriving control commands for the zonal Color guidance is then not possible. Also possibly necessary Detection runs are considered due to the additional time involved to look at disadvantageously.
  • the object of the present invention is therefore a device for densitometric measurement of printed products to expand in accordance with the preamble of claim 1, so that a simple and fail-safe assignment of the in the Measuring field colors arranged in individual color metering zones possible is.
  • the densitometer downstream and comprising a computing device Evaluation unit a comparison of the color density values of a Measuring field with the neighboring measuring fields of the same Color and measuring field type (full tone or screen tone) becomes. It is taken into account that within a measuring strip known structure, the arrangement of, for example measuring fields assigned to the printing ink cyan over the entire maximum format width known and different from zone to zone is. The one obtained on a measuring field of cyan color Color density value in zone N may be due to knowledge of the measuring strip structure with the color density value of the cyan measuring field in the zone N + 1 are compared.
  • the color density value of each color one Measuring field type (full tone or screen tone) with the density values of the same color of neighboring fields compared.
  • the respective measuring field considered e.g. cyan
  • the known measuring strip structure lies the cyan measuring field in the second dosing zone by a certain number of measuring fields Besides.
  • Cyan measuring fields result from the specified measuring strip structure corresponding distances.
  • the size for all adjacent measurement fields 4 ⁇ (D n + 1 - D n ) 2 / (D n + 1 + D n ) 2 is calculated.
  • This quantity describes the square of the relative density change between two neighboring density values.
  • the mean value is calculated from this size and the mean value for all printed colors of the measuring strip from all mean values. The result obtained in this way is a parameter for the smoothness of the density curve. If the smoothness parameters are calculated for all possible constellations between the measured values and the known stripe structure, there is a minimum for a single constellation. This minimum constellation corresponds to the actual field assignment.
  • the calculation of the minimum constellation is carried out in the computing device according to the invention, which as a result supplies the measured values (color density values) in correct assignment to the printing units and the ink metering zones of the inking units.
  • measured values color density values
  • the computing device which as a result supplies the measured values (color density values) in correct assignment to the printing units and the ink metering zones of the inking units.
  • density values of unoccupied measuring fields paper white
  • the by the inventive Setup to be carried out variation of the field shift according to the measuring strip structure in both Directions, i.e. starting from a one Color-assigned measuring field in any color metering zone the measured value assignment according to the stripe structure becomes Calculation of the density change described above in both Directions varied.
  • This makes it possible for a further input is omitted, namely the indication whether the measuring strip of the leading edge or the trailing edge of the Print sheet (print start / print end) is assigned.
  • the device according to the invention makes it unnecessary that an operator has to be entered via control elements Assignment of the first measuring field / dosing zone.
  • the printed sheet 1 can be used for visual and measurement purposes Quality control placed on a base 2 become.
  • the base 2 is part of a perspective in Figure 1 illustrated measuring desk.
  • a measuring strip 3 is also printed on the edge of the printed sheet 1.
  • the measuring strip 3 consists of a variety of the measuring fields formed during printing 4.
  • the measuring fields 4 result in the measuring strips lying side by side 3 and 5 are the individual ink metering zones 5 in FIG assigned printing machine, not shown.
  • the ink metering zones 5 are marked on the base 2 (measuring desk) so that the subject located on the printed sheet 1 also with regard to the zonal allocation is assessable.
  • the measuring fields 4 of the color measuring strip 3 point in terms of a given arrangement within the individual colors Ink metering zones 5. This means, for example, that Measuring field of the color cyan in the individual color metering zones 5 is different in each case.
  • Measuring field of the color cyan in the individual color metering zones 5 is different in each case.
  • one color metering zone 5 is, for example, the measuring field of the color cyan at the third position, in the next ink metering zone the sixth position, in the next but one ink metering zone 5 again at the second position, etc.
  • the densitometer measuring head 6 is on a not shown in Figure 1 Suspension articulated and motorized along the direction of extension of the measuring strip can be moved.
  • the direction of movement of the densitometer measuring head 6 is in Figure 1 by the double arrow indicated.
  • the densitometer measuring head 6 can additionally also a movement perpendicular to the direction of extension of the measuring strip 3.
  • FIG. 2 shows the densitometer measuring head 6 according to the invention downstream evaluation device 7.
  • Evaluation unit 7 supplied to the densitometer measuring head 6 is connected downstream.
  • the computer of the evaluation unit 7 is still in shape with a display device 8 a monitor in operative connection, furthermore with predefined target values calculated measurement results of the Densitometer measuring head 6 also for setting commands for the Color guidance of a printing press 9 can be used.
  • the evaluation unit 7 with the color guide elements (not shown in FIG. 2) of a printing press 9 in Active connection.

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  • Engineering & Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Spectrometry And Color Measurement (AREA)
  • Printing Methods (AREA)
EP00117892A 1999-09-17 2000-08-19 Dispositif pour l'analyse densitométrique de produits imprimés Expired - Lifetime EP1084843B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29916379U 1999-09-17
DE29916379U DE29916379U1 (de) 1999-09-17 1999-09-17 Vorrichtung zum densitometrischen Ausmessen von Druckprodukten

Publications (2)

Publication Number Publication Date
EP1084843A1 true EP1084843A1 (fr) 2001-03-21
EP1084843B1 EP1084843B1 (fr) 2003-01-15

Family

ID=8079052

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00117892A Expired - Lifetime EP1084843B1 (fr) 1999-09-17 2000-08-19 Dispositif pour l'analyse densitométrique de produits imprimés

Country Status (5)

Country Link
US (1) US6446555B1 (fr)
EP (1) EP1084843B1 (fr)
JP (1) JP2001088273A (fr)
AT (1) ATE231072T1 (fr)
DE (2) DE29916379U1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1273444A3 (fr) * 2001-07-04 2006-11-29 Dainippon Screen Mfg. Co., Ltd. Dispositif pour mesurer des barres de couleurs
WO2010020564A2 (fr) * 2008-08-21 2010-02-25 Koenig & Bauer Aktiengesellschaft Procédé de contrôle de la vraisemblance d'au moins une valeur de mesure déterminée dans une machine à imprimer
WO2010020566A1 (fr) * 2008-08-21 2010-02-25 Koenig & Bauer Aktiengesellschaft Procédé de contrôle de vraisemblance d’au moins une valeur de mesure déterminée dans une machine à imprimer
DE102008041430A1 (de) * 2008-08-21 2010-02-25 Koenig & Bauer Aktiengesellschaft Verfahren zur Prüfung zumindest eines in einem laufenden Druckprozess einer Druckmaschine ermittelten Messwertes auf seine Plausibilität
DE102008041426A1 (de) * 2008-08-21 2010-02-25 Koenig & Bauer Aktiengesellschaft Verfahren zur Verwendung in einer Druckmaschine mit mindestens einem Farbwerk
DE102004021601B4 (de) * 2004-05-03 2020-10-22 Heidelberger Druckmaschinen Ag Inline-Messung und Regelung bei Druckmaschinen
DE102021120841A1 (de) 2021-08-11 2023-02-16 Koenig & Bauer Ag Verfahren zur Farbregelung in einer Druckmaschine

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003118085A (ja) * 2001-10-10 2003-04-23 Dainippon Screen Mfg Co Ltd 印刷装置
JP3880831B2 (ja) * 2001-10-10 2007-02-14 大日本スクリーン製造株式会社 インキプリセット方法
US6792863B2 (en) * 2001-10-15 2004-09-21 Dainippon Screen Mfg Co., Ltd. Printing apparatus for automatically controlling ink supply device
EP1437222B2 (fr) * 2001-10-15 2013-11-27 Toppan Printing Co., Ltd. Procede d'impression, matiere imprimee et controleur d'impression
JP2003154629A (ja) * 2001-11-22 2003-05-27 Ryobi Ltd 両面印刷機の印刷濃度管理装置
JP2003311933A (ja) * 2002-04-24 2003-11-06 Dainippon Screen Mfg Co Ltd パッチ測定装置およびそれを組み込んだ印刷装置
JP2003326676A (ja) * 2002-05-16 2003-11-19 Dainippon Screen Mfg Co Ltd コントロールストリップ画像データ付加方法およびこのコントロールストリップ画像データ付加方法を用いる画像データ処理装置、製版装置ならびに印刷装置
JP4216001B2 (ja) 2002-05-21 2009-01-28 大日本スクリーン製造株式会社 印刷機のインキ供給方法および印刷機のインキ供給装置
JP4279516B2 (ja) * 2002-07-01 2009-06-17 大日本スクリーン製造株式会社 印刷機
US20040109161A1 (en) * 2002-12-06 2004-06-10 Stranzl John E. Method and system for processing color-measurement data
JP4072101B2 (ja) 2003-06-30 2008-04-09 リョービ株式会社 両面カラー印刷物におけるカラーバーの認識方法並びにカラー印刷品質管理システム及びカラー印刷品質評価装置
JP4484541B2 (ja) * 2004-02-20 2010-06-16 大日本スクリーン製造株式会社 印刷機のインキ供給方法
US8737857B2 (en) * 2008-03-01 2014-05-27 Hewlett-Packard Development Company, L.P. Detecting colorants within carrier liquid
US8683922B2 (en) * 2012-06-12 2014-04-01 Goss International Americas, Inc. Closed loop ink control system for a printing press
DE102013109920A1 (de) * 2013-09-10 2015-03-12 Manroland Web Systems Gmbh Verfahren zum Bedrucken eines Bedruckstoffs
CN109311332B (zh) 2016-06-22 2021-01-22 惠普发展公司，有限责任合伙企业 浓度调制的自动双面打印

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EP0064024A1 (fr) * 1981-04-03 1982-11-03 GRETAG Aktiengesellschaft Procédé et dispositif pour l'analyse colorimétrique d'une bande de mesure d'impression colorée
DE3643720A1 (de) * 1986-12-20 1988-06-30 Heidelberger Druckmasch Ag Verfahren zum ermitteln von steuer- /regelgroessen fuer das farbwerk von druckmaschinen
EP0274061A2 (fr) * 1986-12-08 1988-07-13 Komori Corporation Synchronisation de la position de mesure pour un densitomètre de balayage
EP0370126A1 (fr) * 1988-11-23 1990-05-30 Komori Corporation Procédé pour valoriser la barre de couleurs pour appareil de commande automatique de la densité des couleurs
EP0434072A2 (fr) * 1989-12-21 1991-06-26 Harald Dr. Krzyminski Bande de contrôle d'impression

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DE2728738B2 (de) * 1977-06-25 1979-05-10 Roland Offsetmaschinenfabrik Faber & Schleicher Ag, 6050 Offenbach Eulrichtung zur Kontrolle und Regelung der Farbgebung an Druckmaschinen
DE3136705C1 (de) * 1981-09-16 1982-10-28 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Verfahren zur Herstellung passgenauer Drucke in Druckmaschinen
DE3331208A1 (de) * 1983-08-30 1985-03-14 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Verfahren zum einstellen des farbwerks einer druckmaschine und messvorrichtung zu seiner durchfuehrung
EP0142470B1 (fr) * 1983-11-04 1988-01-07 GRETAG Aktiengesellschaft Procédé et dispositif d'analyse de la qualité d'impression d'un imprimé, de préférence imprimé sur une rotative offset et rotative offset équipée d'un tel dispositif
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Publication number Priority date Publication date Assignee Title
EP0064024A1 (fr) * 1981-04-03 1982-11-03 GRETAG Aktiengesellschaft Procédé et dispositif pour l'analyse colorimétrique d'une bande de mesure d'impression colorée
EP0274061A2 (fr) * 1986-12-08 1988-07-13 Komori Corporation Synchronisation de la position de mesure pour un densitomètre de balayage
DE3643720A1 (de) * 1986-12-20 1988-06-30 Heidelberger Druckmasch Ag Verfahren zum ermitteln von steuer- /regelgroessen fuer das farbwerk von druckmaschinen
EP0370126A1 (fr) * 1988-11-23 1990-05-30 Komori Corporation Procédé pour valoriser la barre de couleurs pour appareil de commande automatique de la densité des couleurs
EP0434072A2 (fr) * 1989-12-21 1991-06-26 Harald Dr. Krzyminski Bande de contrôle d'impression

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1273444A3 (fr) * 2001-07-04 2006-11-29 Dainippon Screen Mfg. Co., Ltd. Dispositif pour mesurer des barres de couleurs
US7202973B2 (en) 2001-07-04 2007-04-10 Dainippon Screen Mfg. Co., Ltd. Patch measurement device
DE102004021601B4 (de) * 2004-05-03 2020-10-22 Heidelberger Druckmaschinen Ag Inline-Messung und Regelung bei Druckmaschinen
WO2010020564A3 (fr) * 2008-08-21 2010-07-01 Koenig & Bauer Aktiengesellschaft Procédé de contrôle de la vraisemblance d'au moins une valeur de mesure déterminée dans une machine à imprimer
DE102008041430A1 (de) * 2008-08-21 2010-02-25 Koenig & Bauer Aktiengesellschaft Verfahren zur Prüfung zumindest eines in einem laufenden Druckprozess einer Druckmaschine ermittelten Messwertes auf seine Plausibilität
DE102008041426A1 (de) * 2008-08-21 2010-02-25 Koenig & Bauer Aktiengesellschaft Verfahren zur Verwendung in einer Druckmaschine mit mindestens einem Farbwerk
WO2010020566A1 (fr) * 2008-08-21 2010-02-25 Koenig & Bauer Aktiengesellschaft Procédé de contrôle de vraisemblance d’au moins une valeur de mesure déterminée dans une machine à imprimer
DE102008041430B4 (de) * 2008-08-21 2011-12-08 Koenig & Bauer Aktiengesellschaft Verfahren zur Prüfung zumindest eines in einem laufenden Druckprozess einer Druckmaschine ermittelten Messwertes auf seine Plausibilität
US8100057B2 (en) 2008-08-21 2012-01-24 Koenig & Bauer Aktiengesellschaft Method for regulating the ink in a printing press
US8176847B2 (en) 2008-08-21 2012-05-15 Koenig & Bauer Aktiengesellschaft Method for assessing the plausibility of at least one measured value determined in a printing press
DE102008041426B4 (de) * 2008-08-21 2014-09-04 Koenig & Bauer Aktiengesellschaft Verfahren zur Verwendung in einer Druckmaschine mit mindestens einem Farbwerk
WO2010020564A2 (fr) * 2008-08-21 2010-02-25 Koenig & Bauer Aktiengesellschaft Procédé de contrôle de la vraisemblance d'au moins une valeur de mesure déterminée dans une machine à imprimer
DE102021120841A1 (de) 2021-08-11 2023-02-16 Koenig & Bauer Ag Verfahren zur Farbregelung in einer Druckmaschine
WO2023016861A1 (fr) 2021-08-11 2023-02-16 Koenig & Bauer Ag Procédé de contrôle d'encre dans une presse à imprimer
US11932004B1 (en) 2021-08-11 2024-03-19 Koenig & Bauer Ag Method for ink control in a printing press

Also Published As

Publication number Publication date
DE29916379U1 (de) 1999-12-09
JP2001088273A (ja) 2001-04-03
EP1084843B1 (fr) 2003-01-15
ATE231072T1 (de) 2003-02-15
DE50001077D1 (de) 2003-02-20
US6446555B1 (en) 2002-09-10

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