EP1275502A1 - Plages de contrôle pour héliogravure en polychromie - Google Patents

Plages de contrôle pour héliogravure en polychromie Download PDF

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Publication number
EP1275502A1
EP1275502A1 EP01810697A EP01810697A EP1275502A1 EP 1275502 A1 EP1275502 A1 EP 1275502A1 EP 01810697 A EP01810697 A EP 01810697A EP 01810697 A EP01810697 A EP 01810697A EP 1275502 A1 EP1275502 A1 EP 1275502A1
Authority
EP
European Patent Office
Prior art keywords
control
fields
strip
color
field
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.)
Withdrawn
Application number
EP01810697A
Other languages
German (de)
English (en)
Inventor
Karolina Rosenberger
Fabian Bönsch
Matthias Reinhold
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.)
3A Composites International AG
Original Assignee
Alcan Technology and Management Ltd
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 Alcan Technology and Management Ltd filed Critical Alcan Technology and Management Ltd
Priority to EP01810697A priority Critical patent/EP1275502A1/fr
Priority to DE50210682T priority patent/DE50210682D1/de
Priority to ES02405296T priority patent/ES2290263T3/es
Priority to EP20020405296 priority patent/EP1279502B1/fr
Publication of EP1275502A1 publication Critical patent/EP1275502A1/fr
Withdrawn legal-status Critical Current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
    • 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 present invention relates to a control strip or control block containing an arrangement of control fields to control and / or control the multi-color printing of a Intaglio printing process.
  • the color concentration (relative composition of the printing inks is off Color concentrate, blend and solvent) one of the most important parameters that controls Need to become. It has a decisive influence on the coloring of the process as well as the color and tonal quality of the printed product.
  • the color concentration again depends on the nature of the substrate to be printed on which one a certain color impression is to be created. Quality is becoming practical today assessed exclusively by eye and with the aid of densitometers.
  • the quality check is carried out using control strips or control blocks, which consist of an arrangement of control fields.
  • control strips or control blocks The arrangement of several control fields becomes control strips or control blocks called.
  • DIN 16527 Part 1, March 1993 a one-dimensional one is placed under a control strip Line up of control fields understood.
  • a control block is analogous to this a two-dimensional arrangement of control fields.
  • Control strips There are single color prints or Control strips intended for single-color printing as well as multi-color printed or for control blocks intended for multicolor printing. Control strips, the only are intended for the control, regulation or regulation of printing, are specifically called Print control strips, those that are used exclusively for monitoring the copy, are called specifically copy control strips, while strips that can serve both purposes are only referred to as control strips.
  • a control field is an area on which to test purposes one or more picture elements are arranged, the latter can e.g. Halftone dots, Be lines or full tones, the term control field refers to DIN 16 527 part 1 a test area that is directly visible on a flat substrate (e.g. a film) Form is transferred, regardless of whether the information is previously in analogue (e.g. film) or digital Form (e.g. magnetic memory, optical disc) saved.
  • analogue e.g. film
  • digital Form e.g. magnetic memory, optical disc
  • Control strips and control blocks are used for visual or metrological control of copying and printing processes, e.g. for the proof or edition print on Printing machines according to the principles of planographic printing, gravure printing, letterpress printing or By pressure.
  • control means Another application of such control means is the control or regulation of the pressure during the production.
  • the former application can be both visual and visual metrological evaluation of one or more control fields, the latter application only after metrological evaluation. This is done according to the state of the art Densitometers or color measuring devices, e.g. Spectrophotometer used. Both devices use a measurement spot to record those that are thrown back from a printed control field optical energy.
  • Control fields provided for measurement and / or visual evaluation exist either from a solid field, i.e. one fully printed or for full surface Printing area or a grid, i.e. one in printed or for printing intended grid points or lines of resolved area. Both full tones and screen tones can be single color or multi color.
  • a control field is called multicolored if it is printed by several overlapping Printing inks has arisen. Overprinting here means a pressure on which the same Surface inks of different colors are applied.
  • printing inks are here Pigment layers understood, for example as suspensions by a printing press be transferred to the substrate to be printed.
  • Printing inks whose pigments are the primary colors used for multi-color printing, e.g. Black (K), Cyan (C), Magenta (M), Yellow (Y) (yellow) in four-color printing, generate, designated one as scale printing inks.
  • a first category of control fields comprises the multi-colored control fields for visual assessment or measurement, e.g. the solid color fields of the secondary colors blue, Green, red, the tertiary color black, which is created by the overprint of the colorful Primary colors (CMY) are generated, as well as the gray balance fields.
  • CY colorful Primary colors
  • the gray balance fields are according to DIN 16527 part 1.
  • Colorless-looking, printed Gray balance fields cannot be viewed from grid fields from a minimum viewing distance distinguish that are only printed with the achromatic ink black (K).
  • control fields are the single-color control fields of the Scale printing inks (CMYK) and, if necessary, special printing inks. These control fields enable the control of the optical density and the color location of the mentioned printing inks or special printing inks e.g. using a densitometer.
  • the geometry of the control fields is usually such that their shape matches that used Shape of the measuring spots of densitometers and other reflectometers is adapted. They are therefore rectangular in the case of measuring devices with an elliptical measuring spot and square, circular or hexagonal in the case of circular measuring spots.
  • the printing areas are recessed compared to the non-printing areas in the printing form.
  • the ink to be applied is in the printing depressions, the so-called grid cups.
  • the grid cells are through so-called webs or web surfaces which are raised and accordingly do not bear any printing ink, mutually demarcated.
  • the grid cells are arranged in a grid a graded size.
  • the color elements from a certain tonal value also called color coverage or color coverage value
  • the sudden increase in the tonal value caused by the flooding of the printing area is not to be confused with the so-called dot gain.
  • the dot gain indicates how large the area coverage on the printed substrate compared to the Target value, for example based on a template, but based on the increase in size of the color elements on the printed substrate compared to the template and can all areas of coverage occur without sudden changes.
  • a so-called color jump occurs at a certain tonal value or tonal value range on, i.e. there is a sudden increase in the area coverage.
  • the color jump is due to the aforementioned flooding of the grid area, i.e. the applied Color elements begin to flow into each other and combine with each other, wherein the spaces created by the webs or web surfaces are filled with printing ink become.
  • the point orders begin a certain area coverage to merge and between the Dots are formed by color bridges, which causes the color gaps to jump Increasing the area coverage with printing ink are completely covered.
  • Control strips or control blocks of the prior art also have the disadvantage that that checking the optical density (color density) of each primary color only by measuring the single-color control fields (solid color field) of the primary colors using densitometers is possible.
  • the color densities can therefore be measured using the aforementioned measurement method do not monitor continuously in the print run due to effort.
  • the color densities of the primary colors should be continuous with as little effort as possible to monitor so that in the event of discrepancies for the purpose of fault detection, the monochrome Control fields of the primary colors (CMY) can be measured immediately.
  • the invention is therefore based on the object to be printed with regard to the most varied Materials or substrates, the arrangement of control fields of a control strip or control block for a gravure printing process and an arrangement of control fields to provide control of the density values of the Primary colors allowed, as well as a control field to record the color jump.
  • the color densities of the primary colors (CMY) are therefore monitored via gray balance control fields, whereby these are not measured densitometrically but visually by the Comparison with the neighboring achromatic black grid fields checked for constancy become. So you monitor the constancy of the gray balance fields and not how they are behavior of individual primary printing inks (CMY).
  • the first and second control subfield of a multi-range control field preferably have matching color values, i.e. a matching color impression.
  • the multi-area control fields essentially represent the structure of the gray axis of the primary colors CMY on the one hand and black (K) on the other.
  • the multi-area control fields are preferably in two parts. They are also preferably in the order of increasing or decreasing tone values, preferably immediately and arranged adjacent to one another, with the gray balance fields mutually lying adjacent on one axis and the achromatic black grid fields adjacent to each other are arranged lying on an axis.
  • the multi-area control panel is preferably rectangular or square. However, it can also be circular or elliptical, or a polygonal, e.g. hexagonal, structure exhibit.
  • the division of the multi-area control field into a first and second control subfield can be done in any way. The division should, however, be such that a direct visual comparison of the first control subfield with the second control subfield of the multi-range control field is possible.
  • the multi-area control field can, for example, be divided into a core area and an edge area as subfields, the core area preferably being dimensioned such that it can be measured with a color measuring device.
  • the gray balance fields and preferably the achromatic black grid fields can be arranged in the core area.
  • the multi-area control field is preferably in a rectangular or square shape and is divided into two rectangular control subfields of the same size as possible.
  • control strip or control block also contains an arrangement of control fields in the form of single-color grids of the primary colors CMY with, preferably uniform, graded tonal values from 0-100%. That for each primary color becomes a control field for a certain number of tonal values in the range of 0-100% created.
  • the multi-range control fields and / or the single-color grids of the primary colors (CMY) preferably each contain a multi-range control field or control field as a full-tone field (100%).
  • control fields of the individual primary colors are preferably in the order the increasing or decreasing area coverage, preferably immediately and arranged adjacent to each other.
  • the gray axis created from black (K) serves as a reference for the CMY gray axis (gray balance fields) with regard to color density at certain tonal values (taking into account the Dot gain). Result from the visual comparison of the two control subfields striking differences, that is, the gray balance fields contain a color cast, see above a discrepancy in the color densities of the primary colors (CMY) can be derived from this. This inconsistency can be caused, for example, by a disturbed color acceptance of one or several printing inks (CMY).
  • the full tone control fields can be used in a next step (100%) of the primary colors CMY measured the color densities using a densitometer and compared with the target values.
  • control fields according to the invention consequently permits continuous (visual) Monitoring the color densities of the primary colors CMY during the print run, without having to permanently measure the color densities of the primary colors CMY individually Need to become.
  • control strip or control block containing an arrangement of control fields for checking and / or controlling multicolor printing for a gravure printing process
  • the control strip or control block being a Contains a gradient control field in the form of a strip-shaped grid, and that Color gradient control field along its length the continuous course of the setpoints Reproduces tonal values from 0-100% and on the lateral longitudinal edge of the gradient control field the associated target values of the tonal values are listed in graded division.
  • the course of the nominal values of the degree of coverage of 0-100% is preferably linear.
  • the color gradient control field allows the color jump in the visual or with a measuring device To continuously determine or control the grid and use the ones listed on the side Assign a tone value scale to a certain tone value or tonal value range (target value). Knowing this critical tone value or tone value range, for example in the specified tonal range in the print template in advance Be avoided.
  • the substrate to be printed is preferably a film, in particular a flexible packaging film.
  • the packaging film can be transparent, translucent, opaque and / or colored or colored through.
  • the packaging films can be colored, reflective or metallized Surface layers contain and optically colored, reflective and / or metallizing have acting surfaces.
  • the printable packaging films can be mono films or film composites.
  • the surfaces to be printed can e.g. from one of the aforementioned papers, plastics or metals. Furthermore, the surface to be printed can have a ceramic coating his.
  • the thickness of the packaging material can e.g. from 5 to 1000 ⁇ m, especially from 7 to Amount to 200 ⁇ m.
  • the color densities of the individual primary colors (CMY) of the gray balance fields are preferred adapted the optical and / or mechanical properties of the substrate to be printed.
  • the color densities of the primary colors (CMY) must therefore be used to create the Gray balance fields can be determined beforehand.
  • a test form e.g. an IT 8.7 / 3 test form according to ISO 300, created.
  • the proof is made on the same substrate class as the following one Print run.
  • the test form is then measured using a spectrophotometer.
  • a so-called ICC input profile International Color Consortium. This means that the measured device values are in the device-independent L * a * b color space converted.
  • the L * a * b values of the achromatic are subsequently black gray values determined. Then the. Based on the ICC input profile Gray values from CMY are calculated for the corresponding achromatic black gray values. The The values obtained are used as the basis for the subsequent print run.
  • the control fields with the reference symbols 1 to 4 represent single-color ones Grids of the primary colors CMYK with different tonal values.
  • the reference numerals 1 refer to control fields of the primary color cyan (C), the reference number 2 on control fields of the primary color magenta (M), the reference symbols 3 on control fields of the Primary color yellow (Y) and reference number 4 on control subfields of the primary color achromatic Black (K).
  • the letters a to f stand for different tonal values, with a for one Tone value of 100%, b for 80%, c for 60%, d for 40%, e for 20% and f for 5%.
  • the reference number 2f therefore refers to a control field with the number 2 and letter e the primary color magenta (M) with an area coverage of 20%.
  • the described Control fields are adjacent and arranged in an abutting manner.
  • the control subfields 4 of the primary color black correspond in this exemplary embodiment half of a multi-area control field 6, the size of the control fields 1, 2, 3 corresponds to the primary colors (CMY).
  • the second control subfield is the colorful gray balance fields 5 taken.
  • the control subfields are arranged so that always a gray balance field 5 an achromatic black grid field 4 with the same color impression opposite.
  • FIG. 1 Only the reference symbol in FIG. 1 is shown in FIG the control fields 6f formed in the sub-control fields 4f and 5f are exemplified.
  • any other gradation of the tonal values can be made become.
  • the gradation of the tonal values with additional control fields or through Omission of control fields can be varied.
  • the size and type vary the subdivision of the two-part control fields.
  • FIG. 3 shows the multi-area control fields 6 with the control subfields 4 and 5 according to FIG the description of FIG. 1.
  • FIG. 2 shows a color gradient control field 10 with a strip-shaped grid field 11 strip-shaped grid 11 reproduces the linear course which is continuous according to setpoints the tonal values from 0 to 100%. For reasons of space, FIG. 2 shows only a section of such a gradient control field 10.
  • a value scale 12 To the side of the strip-shaped grid 11 is a value scale 12 with the associated ones Target values of the tonal values are arranged in percent.
  • the gradation or resolution of the value scale can be any, in the present embodiment it has proven to be advantageous List tonal values in increments of 3% each.
  • the arrangement allows the color jump in the stripe form, visually or with a measuring device Determine grid 11 and the color jump on the basis of the associated associated Assign tone values to the corresponding tone value or tone value range.
  • control strip or control block can also contain other control fields, such as control fields for the secondary colors red, green, blue from the overprint of the primary colors (CMY), Black (K), achromatic grids with a tone value of 50% with different grids, like dot and line grids, a Siemens star to check the resolution and / or contain a register field for checking the register shift.
  • CY primary colors
  • K Black
  • achromatic grids with a tone value of 50% with different grids like dot and line grids
  • Siemens star to check the resolution and / or contain a register field for checking the register shift.
EP01810697A 2001-07-12 2001-07-12 Plages de contrôle pour héliogravure en polychromie Withdrawn EP1275502A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP01810697A EP1275502A1 (fr) 2001-07-12 2001-07-12 Plages de contrôle pour héliogravure en polychromie
DE50210682T DE50210682D1 (de) 2001-07-12 2002-04-12 Verfahren zur Kontrolle eines Tiefdruckverfahrens
ES02405296T ES2290263T3 (es) 2001-07-12 2002-04-12 Procedimiento para controlar un proceso de impresion en huecograbado.
EP20020405296 EP1279502B1 (fr) 2001-07-12 2002-04-12 Procédé de contrôle pour héliogravure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP01810697A EP1275502A1 (fr) 2001-07-12 2001-07-12 Plages de contrôle pour héliogravure en polychromie

Publications (1)

Publication Number Publication Date
EP1275502A1 true EP1275502A1 (fr) 2003-01-15

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EP01810697A Withdrawn EP1275502A1 (fr) 2001-07-12 2001-07-12 Plages de contrôle pour héliogravure en polychromie

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EP (1) EP1275502A1 (fr)
DE (1) DE50210682D1 (fr)
ES (1) ES2290263T3 (fr)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1464493A2 (fr) * 2003-03-21 2004-10-06 Quad/Tech, Inc. Machine à imprimer
DE102007029211A1 (de) * 2007-06-25 2009-01-08 Heidelberger Druckmaschinen Ag Verbesserter Druckkontrollstreifen zur Farbmessung auf Bedruckstoffen
EP1733881A3 (fr) * 2005-06-15 2009-09-02 Dainippon Screen Mfg., Co., Ltd. Bande de contrôle d'impression, système d'impression et méthode d'impression
DE102004063988B4 (de) * 2004-09-16 2010-11-04 Schorsch, Claus Peter Verfahren zur Erfassung von bei einem Druckvorgang wirkenden Variablen
EP2295256A1 (fr) * 2008-05-26 2011-03-16 Wing King Tong Printing Limited Procédé de régulation de la balance de gris neutre
DE102010007858A1 (de) * 2010-02-12 2011-08-18 Heidelberger Druckmaschinen AG, 69115 Verfahren zur Bestimmung von Charakterisierungsdaten eines Druckprozesses
US8159719B2 (en) 2007-07-10 2012-04-17 Heidelberger Druckmaschinen Ag Method for correcting the gray balance of a printing process
JP2015009565A (ja) * 2013-07-01 2015-01-19 ハイデルベルガー ドルツクマシーネン アクチエンゲゼルシヤフトＨｅｉｄｅｌｂｅｒｇｅｒ Ｄｒｕｃｋｍａｓｃｈｉｎｅｎ ＡＧ 印刷機においてインキ調量を調整する方法
WO2020043463A1 (fr) * 2018-08-31 2020-03-05 Koenig & Bauer Ag Procédé permettant d'ajuster une densité de couche d'un matériau de revêtement devant être appliqué par un dispositif d'application sur un substrat de manière à le recouvrir
CN112073594A (zh) * 2019-05-25 2020-12-11 森大（深圳）技术有限公司 灰平衡调节方法、装置及计算机可读存储介质
CN115122793A (zh) * 2022-07-25 2022-09-30 印工社(青岛)互联网科技有限公司 一种扫描式印刷测控条及其制作方法

Citations (3)

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Publication number Priority date Publication date Assignee Title
US4310248A (en) * 1980-04-24 1982-01-12 Meredith Nolan J Color control system
EP0219200A2 (fr) * 1985-10-04 1987-04-22 Foilwraps Flexible Packaging Limited Vérification de l'impression en creux
DE4338976A1 (de) * 1993-11-15 1995-05-18 Fogra Forschungsgesellschaft D Anordnung von mehreren Kontrollfeldern

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4310248A (en) * 1980-04-24 1982-01-12 Meredith Nolan J Color control system
EP0219200A2 (fr) * 1985-10-04 1987-04-22 Foilwraps Flexible Packaging Limited Vérification de l'impression en creux
DE4338976A1 (de) * 1993-11-15 1995-05-18 Fogra Forschungsgesellschaft D Anordnung von mehreren Kontrollfeldern

Non-Patent Citations (2)

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Title
FOGRA Kontrollmittel: "Ugra/FOGRA-Medienkeil TIFF-CMYK und EPS-CMYK", 01. September 2000 (2000-09-01), FOGRA Forschungsgesellschaft Druck e.V., München (DE) *
WALENSKI WOLFGANG: "Offsetdruck", 1991, POLYGRAPH VERLAG, FRANKFURT AM MAIN (DE), XP002177788 *

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1464493A2 (fr) * 2003-03-21 2004-10-06 Quad/Tech, Inc. Machine à imprimer
EP1464493A3 (fr) * 2003-03-21 2008-10-29 Quad/Tech, Inc. Machine à imprimer
DE102004063988B4 (de) * 2004-09-16 2010-11-04 Schorsch, Claus Peter Verfahren zur Erfassung von bei einem Druckvorgang wirkenden Variablen
DE102004044763B4 (de) * 2004-09-16 2010-11-04 Schorsch, Claus Peter Messfeldanordnung
EP1733881A3 (fr) * 2005-06-15 2009-09-02 Dainippon Screen Mfg., Co., Ltd. Bande de contrôle d'impression, système d'impression et méthode d'impression
DE102007029211A1 (de) * 2007-06-25 2009-01-08 Heidelberger Druckmaschinen Ag Verbesserter Druckkontrollstreifen zur Farbmessung auf Bedruckstoffen
US8807033B2 (en) 2007-06-25 2014-08-19 Heidelberger Druckmachinen Ag Print control strip for color measurement on printing material, measuring method and method of metering ink
US8159719B2 (en) 2007-07-10 2012-04-17 Heidelberger Druckmaschinen Ag Method for correcting the gray balance of a printing process
DE102008031735B4 (de) * 2007-07-10 2019-11-07 Heidelberger Druckmaschinen Ag Graubalancekorrektur eines Druckverfahrens
EP2295256A4 (fr) * 2008-05-26 2013-09-04 Wing King Tong Printing Ltd Procédé de régulation de la balance de gris neutre
EP2295256A1 (fr) * 2008-05-26 2011-03-16 Wing King Tong Printing Limited Procédé de régulation de la balance de gris neutre
DE102010007858A1 (de) * 2010-02-12 2011-08-18 Heidelberger Druckmaschinen AG, 69115 Verfahren zur Bestimmung von Charakterisierungsdaten eines Druckprozesses
US8654395B2 (en) 2010-02-12 2014-02-18 Heidelberger Druckmaschinen Ag Method and test element for determining characterization data of a printing process and apparatus for carrying out the method
JP2015009565A (ja) * 2013-07-01 2015-01-19 ハイデルベルガー ドルツクマシーネン アクチエンゲゼルシヤフトＨｅｉｄｅｌｂｅｒｇｅｒ Ｄｒｕｃｋｍａｓｃｈｉｎｅｎ ＡＧ 印刷機においてインキ調量を調整する方法
WO2020043463A1 (fr) * 2018-08-31 2020-03-05 Koenig & Bauer Ag Procédé permettant d'ajuster une densité de couche d'un matériau de revêtement devant être appliqué par un dispositif d'application sur un substrat de manière à le recouvrir
US11173702B2 (en) 2018-08-31 2021-11-16 Koenig & Bauer Ag Method for setting the layer thickness of a covering coating material to be applied to a substrate by an application device
CN112073594A (zh) * 2019-05-25 2020-12-11 森大（深圳）技术有限公司 灰平衡调节方法、装置及计算机可读存储介质
CN115122793A (zh) * 2022-07-25 2022-09-30 印工社(青岛)互联网科技有限公司 一种扫描式印刷测控条及其制作方法
CN115122793B (zh) * 2022-07-25 2024-03-22 印工社(青岛)数字科技有限公司 一种扫描式印刷测控条及其制作方法

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Publication number Publication date
ES2290263T3 (es) 2008-02-16
DE50210682D1 (de) 2007-09-27

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