EP0860276B1 - Vorrichtung und Verfahren zur Durchführung von qualitätsmanagement - Google Patents

Vorrichtung und Verfahren zur Durchführung von qualitätsmanagement Download PDF

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Publication number
EP0860276B1
EP0860276B1 EP97121396A EP97121396A EP0860276B1 EP 0860276 B1 EP0860276 B1 EP 0860276B1 EP 97121396 A EP97121396 A EP 97121396A EP 97121396 A EP97121396 A EP 97121396A EP 0860276 B1 EP0860276 B1 EP 0860276B1
Authority
EP
European Patent Office
Prior art keywords
measuring
assigned
printing machine
web
rotational roller
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 - Lifetime
Application number
EP97121396A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0860276A1 (de
Inventor
Andreas Birkenfeld
Karl-Heinz Reichel-Langer
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.)
Baldwin Germany GmbH
Original Assignee
Baldwin Germany GmbH
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 Baldwin Germany GmbH filed Critical Baldwin Germany GmbH
Publication of EP0860276A1 publication Critical patent/EP0860276A1/de
Application granted granted Critical
Publication of EP0860276B1 publication Critical patent/EP0860276B1/de
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

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.
  • EP 0741 032 A2 also discloses a web-fed rotary printing press a measuring head that is adjustable over the width of the printing material web comprises a CCD sensor and a flash device and by means of a the encoder assigned to the web-fed rotary printing press, depending on the product can be activated, and with a control device with an input for Measuring signals from the measuring head.
  • This arrangement is used to control the Ink metering device of the web-fed rotary printing machine depending on Measured values recorded during printing.
  • test patterns are scanned that are located on a specific point in the area of the front or rear edge of the Printed image. Accordingly, the measuring head is not adjustable.
  • the CCD sensors provided in the known arrangement can Record color density. The acquisition of the spectral distribution is not intended. The known arrangement is therefore for subsequent Providing an exact proof of quality is not suitable.
  • 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. to Avoid a strong path deflection by flutter etc. 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 record.
  • Such a time-density diagram is shown in FIG. 3 based.
  • 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)
EP97121396A 1997-02-19 1997-12-05 Vorrichtung und Verfahren zur Durchführung von qualitätsmanagement Expired - Lifetime EP0860276B1 (de)

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 EP0860276A1 (de) 1998-08-26
EP0860276B1 true EP0860276B1 (de) 2002-10-16

Family

ID=7820740

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97121396A Expired - Lifetime EP0860276B1 (de) 1997-02-19 1997-12-05 Vorrichtung und Verfahren zur Durchführung von qualitätsmanagement

Country Status (6)

Country Link
US (1) US5927201A (ja)
EP (1) EP0860276B1 (ja)
JP (1) JPH10230586A (ja)
CN (1) CN1089687C (ja)
DE (1) DE59708489D1 (ja)
HK (1) HK1014905A1 (ja)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
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
JP5400386B2 (ja) * 2005-11-25 2014-01-29 カーベーアー−ノタシ ソシエテ アノニム 印刷機上での被印刷体の処理中に被印刷体上の印刷エラーの発生を検出する方法
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
DE102006022529B4 (de) 2006-05-15 2009-05-20 Koenig & Bauer Aktiengesellschaft Rollenrotationsdruckmaschine mit mindestens einem Farbwerk und mit einem Inline-Inspektionssystem
DE102006048539A1 (de) * 2006-10-13 2008-04-17 Heidelberger Druckmaschinen Ag Farbmesskopfpositionierungsvorrichtung
DE202011050535U1 (de) * 2011-06-22 2012-09-24 Eltromat Gmbh Bahnbeobachtungssystem für Rotationsdruckmaschinen

Citations (1)

* Cited by examiner, † Cited by third party
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

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5182721A (en) * 1985-12-10 1993-01-26 Heidelberger Druckmaschinen Aktiengesellschaft Process and apparatus for controlling the inking process in a printing machine
EP0228347B2 (de) * 1985-12-10 1996-11-13 Heidelberger Druckmaschinen Aktiengesellschaft Verfahren zur Farbauftragssteuerung bei einer Druckmaschine, entsprechend ausgerüstete Druckanlage und Messvorrichtung für eine solche Druckanlage
EP0324718B1 (de) * 1988-01-14 1992-07-08 GRETAG Aktiengesellschaft 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
DE4321177A1 (de) * 1993-06-25 1995-01-05 Heidelberger Druckmasch Ag Vorrichtung zur parallelen Bildinspektion und Farbregelung an einem Druckprodukt
EP0725733B1 (en) * 1993-10-28 2000-05-17 Perretta Graphics Corporation System for maintaining ink density
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
US6058201A (en) * 1995-05-04 2000-05-02 Web Printing Controls Co., Inc. Dynamic reflective density measuring and control system for a web printing press

Patent Citations (1)

* Cited by examiner, † Cited by third party
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

Also Published As

Publication number Publication date
CN1191805A (zh) 1998-09-02
US5927201A (en) 1999-07-27
DE59708489D1 (de) 2002-11-21
EP0860276A1 (de) 1998-08-26
JPH10230586A (ja) 1998-09-02
CN1089687C (zh) 2002-08-28
HK1014905A1 (en) 1999-10-08

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