EP0860276A1 - Procédé et dispositif de contrÔle de qualité - Google Patents
Procédé et dispositif de contrÔle de qualité Download PDFInfo
- Publication number
- EP0860276A1 EP0860276A1 EP97121396A EP97121396A EP0860276A1 EP 0860276 A1 EP0860276 A1 EP 0860276A1 EP 97121396 A EP97121396 A EP 97121396A EP 97121396 A EP97121396 A EP 97121396A EP 0860276 A1 EP0860276 A1 EP 0860276A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- web
- measuring
- assigned
- fed rotary
- rotary printing
- 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
Links
Images
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
Definitions
- the invention relates to an apparatus and a method for carrying it out of quality management when printing with a web-fed rotary press.
- the device-related solution to this problem is in claim 1 specified.
- at least one is across the width of the printing material web adjustable measuring head, which includes a spectrometer and an exposure source contains and by means of one of the web-fed rotary printing press assigned encoder can be activated depending on the product, and a control device provided, by means of which the measuring signals of each measuring head are continuously recordable.
- the encoder As a result of the lateral adjustability of the measuring heads and their triggering Thanks to the encoder, practically any position on the printed web can be achieved can be achieved. It is therefore possible to select critical area and assign a measuring head to it. The measurement takes place via the entire visible spectrum, so that even in the intermediate areas high accuracy can be achieved between the three basic colors. Since the measured values continuously recorded and recorded are in advantageously an exact control and in particular an exact one Proof of quality possible, provided the customer subsequently checks the quality should complain about what is common when printing large-format advertisements etc. should occur. The storage of the measured values over the whole Production time advantageously allows after the end of Production various representations from which existing ones Deviations are recognizable at a glance.
- Figure 1 is a web-fed rotary printing press represented only by its last printing unit 1 indicated, by means of which a printing material web 2 is printed.
- the web-fed rotary printing press 1 can be trade an offset web press. The construction and the The mode of operation of such machines is known per se and requires it therefore no further explanation in the present context.
- the web-fed rotary printing press 1 is followed by a dryer 3 a cooling device, not shown here, can be arranged downstream. Subsequently, the printing material web 2 only runs through one here a folder 4 indicated.
- Cooling device and the folder 4 passes through the printing material web 2 here consisting of several measuring heads 5 measuring device.
- the printing material web 2 here consisting of several measuring heads 5 measuring device.
- Measuring device a comparatively short, by two deflection rollers 6th limited path section assigned.
- the measuring heads 5 With the help of the measuring heads 5 in selected points or point areas 7 of the periodically recurring on the substrate 2 The color density and the spectral distribution at the same time measured by color.
- the measuring heads can be moved laterally Traverses 8 running transversely to the running direction of the printing material web 2 arranged and manually and / or by assigned drive motors adjustable along the traverses 8. To the assigned measuring point reach, the measuring heads 5 along the associated crossmember 8 accordingly the lateral coordinate of the assigned measuring point postponed.
- the measuring point is one of the Web-fed rotary printing press 1, high-resolution encoder 9 given that the trigger point for triggering each measuring head 5 am delivers the respective measuring point.
- the measuring heads 5 contain a spectrometer that simultaneously with each triggering the color density and spectral distribution of the color in the assigned measuring field 7 detected.
- the trigger occurs every time that on the printing material web 2 periodically recurring measuring field 7 under the assigned measuring head 5 passes.
- the measuring heads 5 also an exposure device. This can be as constantly shining Quartz lamp or preferably as together with the spectrometer periodically triggerable flash should be formed, which is a high light intensity results in a comparatively low energy requirement.
- a control device is assigned to the measuring device.
- This includes a recording memory 10 containing the signals of the Receiving encoder 9 and an interface to the operator, for example in the form of an input keyboard 11 having central unit 12 and a subordinate subunit 13, which can be controlled by this, for local Operation of the measuring heads 5.
- the central unit 12 With the help of the central unit 12 are based on the commands provided by the operator and the encoder 9 Control signals for setting and activating the measuring heads 5 are determined.
- the Operator gives practically only the coordinates of each Measuring point.
- the control signals mentioned go via the signal line 14 to the subordinate subunit 13 through which the measuring heads 5 be served locally. To shorten the lateral adjustment of the Measuring heads 5 can be manually preset so that then only a fine motor adjustment is necessary.
- the subunit 13 at the same time the measuring heads 5 supplied data processed so that they have a suitable interface can be transferred to the central unit 12. In the example shown, this is due to the pointing in both directions Arrows of the signal line 14 indicated.
- the to the central unit 12 Data transferred are processed by the central unit 12 according to color density and spectral distribution processed and in the recording memory 10 on the Duration of production saved continuously.
- Another measure to achieve high accuracy is in that the measurement results influence temperature fluctuations be balanced.
- the subunit 13 assigned compensation device 15a is provided, which the in Measuring range occurring temperature fluctuations after a can computationally compensate for the specified program.
- the Temperature detection can take place via the dark values of the measuring heads 5, so that additional temperature sensors are not required.
- the measuring heads 5 each provided with a tubular housing, which with its front opening is made close to the paper web 2, so that only there is a small gap through which little false light can penetrate.
- the diameter of the tubular housing Measuring heads 5 selected larger than the diameter of the detectable measuring field, whereby the intensity of what is still present in the area of the measuring field Is weakened in the wrong light.
- the strength of the Exposure device emitted light set very high, which the effect of false light loses importance.
- the current values of the measurements carried out by the measuring heads 5 may be appropriate after appropriate adjustment displayed. For this is one of the central unit 12 of the control device controllable display device 16 is provided. Each measuring head 5 can be assigned a separate display field.
- the central unit 12 of the control device is also linked to the control device 17 of the web-fed rotary printing press 1, as indicated by the signal line 18.
- control device 17 can take countermeasures be initiated, e.g. can affect the setting of the inking units are, as indicated in Figure 1 by a signal line 19.
- an alarm device 20 for alarming the Printing personnel are operated. It is of course also possible to mark affected products by applying a suitable color Spray nozzles can be opened or discarded by the Waste gates are opened.
- FIG. 2 This diagram shows the Development of the color over the printing period.
- the point 21 characterizes practically the ideal value.
- the field 22 surrounding point 21 characterizes the spectral range within which the color moves Has. Here you can see at a glance whether a tolerance range, for example inform of a circle drawn around point 21, has been observed or not.
- FIG. 3 Another option is to develop color density over time to record.
- Such a time-density diagram is shown in FIG. 3 underlying.
- the courses of the color densities are three basic colors specified above the production time. Lines 23 characterize the ideal course.
- the curves 24 show the actual course.
- FIG. 4 contains a spectral distribution curve 25, from which the spectral distribution of all colors occurring in the assigned measuring range over the entire visible spectrum. The spectral Distribution of individual measurements or integration over several or all measurements are displayed.
- the invention thus forms an important element of a reliable one Quality management.
- the invention offers the possibility of the quality produced can also be proven retrospectively, whereby unjustified complaints can be reasonably countered.
Landscapes
- Engineering & Computer Science (AREA)
- Quality & Reliability (AREA)
- Spectrometry And Color Measurement (AREA)
- Inking, Control Or Cleaning Of Printing Machines (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19706412 | 1997-02-19 | ||
DE19706412 | 1997-02-19 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0860276A1 true EP0860276A1 (fr) | 1998-08-26 |
EP0860276B1 EP0860276B1 (fr) | 2002-10-16 |
Family
ID=7820740
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97121396A Expired - Lifetime EP0860276B1 (fr) | 1997-02-19 | 1997-12-05 | Procédé et dispositif de contrôle de qualité |
Country Status (6)
Country | Link |
---|---|
US (1) | US5927201A (fr) |
EP (1) | EP0860276B1 (fr) |
JP (1) | JPH10230586A (fr) |
CN (1) | CN1089687C (fr) |
DE (1) | DE59708489D1 (fr) |
HK (1) | HK1014905A1 (fr) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7287473B2 (en) | 2005-12-20 | 2007-10-30 | Heidelberger Druckmaschinen Ag | Method for selecting printing material in a printing press and printing press |
EP1857280A2 (fr) | 2006-05-15 | 2007-11-21 | Koenig & Bauer Aktiengesellschaft | Presse rotative dotée d'au moins un système d'encrage et un système de mesure en ligne des couleurs |
EP2537677A1 (fr) * | 2011-06-22 | 2012-12-26 | eltromat GmbH | Système d'observation de bande pour des presses rotatives |
DE102006055302B4 (de) | 2005-12-20 | 2022-06-23 | Heidelberger Druckmaschinen Ag | Verfahren zur Selektion von Bedruckstoffen in einer Druckmaschine |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19822662C2 (de) * | 1998-05-20 | 2003-12-24 | Roland Man Druckmasch | Verfahren zur Farbreproduktion auf einer Bilddaten orientierten Druckmaschine |
DE10131934B4 (de) * | 2001-07-02 | 2010-03-11 | Wifag Maschinenfabrik Ag | Messung und Regelung der Farbgebung im Rollendruck |
US7032508B2 (en) * | 2003-03-21 | 2006-04-25 | Quad/Tech, Inc. | Printing press |
DE102004021600A1 (de) * | 2004-05-03 | 2005-12-08 | Gretag-Macbeth Ag | Vorrichtung zur Inline-Überwachung der Druckqualität bei Bogenoffsetdruckmaschinen |
EP1965982B1 (fr) * | 2005-11-25 | 2014-06-11 | KBA-NotaSys SA | Méthode pour détecter l'apparition d'erreurs d'impression sur un substrat durant son traitement dans une machine d'impression |
DE102006048539A1 (de) * | 2006-10-13 | 2008-04-17 | Heidelberger Druckmaschinen Ag | Farbmesskopfpositionierungsvorrichtung |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0228347A1 (fr) * | 1985-12-10 | 1987-07-08 | Heidelberger Druckmaschinen Aktiengesellschaft | Procédé de commande de l'alimentation en encre pour une machine à imprimer, dispositif d'impression équipé de manière correspondante et dispositif de mesure pour un tel appareil d'impression |
DE4321177A1 (de) * | 1993-06-25 | 1995-01-05 | Heidelberger Druckmasch Ag | Vorrichtung zur parallelen Bildinspektion und Farbregelung an einem Druckprodukt |
WO1995011806A1 (fr) * | 1993-10-28 | 1995-05-04 | Perretta Graphics Corporation | Systeme de maintien de la densite de l'encre |
EP0741032A2 (fr) * | 1995-05-04 | 1996-11-06 | Web Printing Controls Co., Inc. | Dispositif de mesure de la densité réflective et système de contrÔle pour une machine à imprimer des bandes |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3376426A (en) * | 1966-11-04 | 1968-04-02 | Hurletron Inc | Color detection apparatus for multiple color printing |
US5182721A (en) * | 1985-12-10 | 1993-01-26 | Heidelberger Druckmaschinen Aktiengesellschaft | Process and apparatus for controlling the inking process in a printing machine |
DE58901780D1 (de) * | 1988-01-14 | 1992-08-13 | Gretag Ag | Verfahren und vorrichtung zur farbregelung einer druckmaschine. |
DE3812099C2 (de) * | 1988-04-12 | 1995-01-26 | Heidelberger Druckmasch Ag | Verfahren zur Farbsteuerung einer Offsetdruckmaschine |
US5369494A (en) * | 1993-04-12 | 1994-11-29 | X-Rite, Incorporated | Portable scanning colorimeter |
DE4343905C2 (de) * | 1993-12-22 | 1996-02-15 | Roland Man Druckmasch | Verfahren zur Steuerung der Farbführung bei einer Druckmaschine |
DE19511076C1 (de) * | 1995-03-25 | 1996-05-23 | Roland Man Druckmasch | Verfahren zum Feststellen von Farbverschmutzungen beim Herstellen mehrfarbiger Druckexemplare auf Druckmaschinen |
-
1997
- 1997-12-05 DE DE59708489T patent/DE59708489D1/de not_active Expired - Fee Related
- 1997-12-05 EP EP97121396A patent/EP0860276B1/fr not_active Expired - Lifetime
- 1997-12-10 US US08/987,588 patent/US5927201A/en not_active Expired - Fee Related
-
1998
- 1998-01-07 JP JP10001293A patent/JPH10230586A/ja active Pending
- 1998-02-17 CN CN98103889A patent/CN1089687C/zh not_active Expired - Fee Related
- 1998-12-30 HK HK98119208A patent/HK1014905A1/xx not_active IP Right Cessation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0228347A1 (fr) * | 1985-12-10 | 1987-07-08 | Heidelberger Druckmaschinen Aktiengesellschaft | Procédé de commande de l'alimentation en encre pour une machine à imprimer, dispositif d'impression équipé de manière correspondante et dispositif de mesure pour un tel appareil d'impression |
DE4321177A1 (de) * | 1993-06-25 | 1995-01-05 | Heidelberger Druckmasch Ag | Vorrichtung zur parallelen Bildinspektion und Farbregelung an einem Druckprodukt |
WO1995011806A1 (fr) * | 1993-10-28 | 1995-05-04 | Perretta Graphics Corporation | Systeme de maintien de la densite de l'encre |
EP0741032A2 (fr) * | 1995-05-04 | 1996-11-06 | Web Printing Controls Co., Inc. | Dispositif de mesure de la densité réflective et système de contrÔle pour une machine à imprimer des bandes |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7287473B2 (en) | 2005-12-20 | 2007-10-30 | Heidelberger Druckmaschinen Ag | Method for selecting printing material in a printing press and printing press |
DE102006055302B4 (de) | 2005-12-20 | 2022-06-23 | Heidelberger Druckmaschinen Ag | Verfahren zur Selektion von Bedruckstoffen in einer Druckmaschine |
EP1857280A2 (fr) | 2006-05-15 | 2007-11-21 | Koenig & Bauer Aktiengesellschaft | Presse rotative dotée d'au moins un système d'encrage et un système de mesure en ligne des couleurs |
EP1857280A3 (fr) * | 2006-05-15 | 2011-04-06 | Koenig & Bauer Aktiengesellschaft | Presse rotative dotée d'au moins un système d'encrage et un système de mesure en ligne des couleurs |
EP2537677A1 (fr) * | 2011-06-22 | 2012-12-26 | eltromat GmbH | Système d'observation de bande pour des presses rotatives |
Also Published As
Publication number | Publication date |
---|---|
EP0860276B1 (fr) | 2002-10-16 |
CN1191805A (zh) | 1998-09-02 |
HK1014905A1 (en) | 1999-10-08 |
US5927201A (en) | 1999-07-27 |
DE59708489D1 (de) | 2002-11-21 |
CN1089687C (zh) | 2002-08-28 |
JPH10230586A (ja) | 1998-09-02 |
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