EP0987110A1 - Procédé pour évaluer la qualité d'un matériau traité - Google Patents

Procédé pour évaluer la qualité d'un matériau traité Download PDF

Info

Publication number
EP0987110A1
EP0987110A1 EP99118436A EP99118436A EP0987110A1 EP 0987110 A1 EP0987110 A1 EP 0987110A1 EP 99118436 A EP99118436 A EP 99118436A EP 99118436 A EP99118436 A EP 99118436A EP 0987110 A1 EP0987110 A1 EP 0987110A1
Authority
EP
European Patent Office
Prior art keywords
counter
counter reading
error
inspected
sheets
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
EP99118436A
Other languages
German (de)
English (en)
Other versions
EP0987110B1 (fr
Inventor
Gerald Josef Reinhard
Johannes Georg Schaede
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.)
Koenig and Bauer AG
Original Assignee
Koenig and Bauer 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 Koenig and Bauer AG filed Critical Koenig and Bauer AG
Publication of EP0987110A1 publication Critical patent/EP0987110A1/fr
Application granted granted Critical
Publication of EP0987110B1 publication Critical patent/EP0987110B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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

Definitions

  • the invention relates to methods for qualitative Evaluation of processed material according to the Preamble of claim 1.
  • DE-OS 23 38 849 describes a method for Finding defects in rolled steel surfaces. Here those errors are identified that a certain Show periodicity.
  • DE 41 29 126 A1 discloses a method for Detection of defects in a textile web. The number of consecutive errors added. If a faultless product occurs the counter reading is reset to zero.
  • the invention has for its object a method for the qualitative assessment of processed material to accomplish.
  • errors in the material to be inspected are systematically recorded using the method according to the invention.
  • the location of an error is facilitated by the targeted detection of errors that occur and their assignment to an associated error source. Waste and downtimes of the processing machine are reduced.
  • rotary printing presses see EP 04 06 157 B1 with a forme cylinder having a plurality of identical printing forms, it is thus possible to clearly assign errors to the printing form which generated the errors.
  • a processing machine for example a rotary printing machine, is provided with a device for the qualitative assessment of processed material.
  • This material can be printed sheets or webs, for example.
  • sheets of paper are printed using the steel engraving process and then assessed qualitatively inline.
  • the rotary printing press can be, for example, a steel engraving printing press known from EP 04 06 157 B1.
  • picture elements of a sheet to be checked are compared with stored picture elements of so-called "master" sheets. If one or more measured values lie outside a predetermined tolerance of the corresponding measured values of the "master” sheets, an error is detected. This error can now be indicated optically or acoustically by means of a first warning signal. The corresponding sheet with an error can also be marked or sorted out.
  • a counter is fed a signal for the defective sheet, whereby the counter reading of a counting unit, e.g. B. is increased by one. If one or more defective sheets follow directly on the defective sheet, the counter reading of the counter is increased by one for each defective sheet. The counter only adds the counter reading by one counter unit, e.g. B. one up.
  • a signal for the error-free sheet is fed to the counter, whereby the counter reading is gradually increased by one counting unit, e.g. B. one is reduced. Now follow more error-free Sheets one after the other, the counter reading is reduced by one for each error-free sheet. If the counter reading has reached a lower limit, for example the value 0, no further downward counting takes place. The counter reading is thus changed step by step according to the number of inspected, faulty and error-free sheets. This procedure takes place within a range of the counter reading from a lower limit, e.g. B. zero, up to a definable (selectable), upper limit of the counter reading. If this limit value is reached, a second warning signal is triggered and, for example, fed to the machine control. This signal can, for example, cause the speed of the rotary printing press to be reduced or the rotary printing press to be switched off.
  • This procedure is based on the total number of inspecting sheet applicable.
  • the sheets to be inspected are often processed in machines in which cyclical errors can occur. This is the case, for example, when the sheets to be inspected are printed using a rotary printing press known from EP 04 06 157 B1.
  • This rotary printing press has a plate cylinder which is provided with three printing plates, each having an identical printing form. The non-printing areas of these printing plates are cleaned by a common wiper device after inking.
  • This wiping device consists, among other things, of a wiping cylinder operated under pressure. If, for example, one of the three pressure plates is damaged or is partially a little lower, the wiper device does not completely clean this area. Therefore, every third sheet of all sheets produced would have a toning area. Toning areas can also only occur for a limited time, for example by slugs which are removed by the wiping device.
  • each printing plate is assigned its own counter. This counter is synchronized with the printing press and the inspection device in such a way that a signal of an error-free or defective sheet printed on a specific printing plate is fed to the counter assigned to this printing plate. Each counter assigned to a printing plate is therefore only supplied with signals from the sheets printed and inspected by means of this associated printing plate.
  • This particular counter can work according to the following simple principle: If a faulty sheet is detected, a signal is fed to the respective counter, whereby the counter reading is increased by one counting unit, e.g. B. one is increased. This is done at successive sheets up to a preselectable limit. However, by detecting a faultless sheet, the counter reading is reset to zero and counting of the counter reading only begins when faulty sheets appear again. If this limit value is reached, a second warning signal is issued, which, for example, is passed on to the machine control system to trigger further processes.
  • one counting unit e.g. B. one is increased. This is done at successive sheets up to a preselectable limit.
  • the counter reading is reset to zero and counting of the counter reading only begins when faulty sheets appear again. If this limit value is reached, a second warning signal is issued, which, for example, is passed on to the machine control system to trigger further processes.
  • the method described at the outset is also used for counting these cyclically occurring errors. Accordingly, the counting up and down is carried out step by step according to the number of faulty and faultless sheets.
  • This counting of cyclical errors is not just that described example of plate cylinders with several Printing plates limited, taking cyclical errors successive sheets or reports of the web can be detected. There are also other use cases possible. Relevant possible sources of error are that generate a cyclical error, at least one own counter assigned.
  • Step size not equal to one it is also possible to count in other counter units or step sizes (i.e. Step size not equal to one) and with other limit values perform.

Landscapes

  • Engineering & Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Facsimiles In General (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
  • Image Analysis (AREA)
  • Image Processing (AREA)
EP99118436A 1996-04-02 1997-04-01 Procédé pour évaluer la qualité d'un matériau traité Expired - Lifetime EP0987110B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19613083A DE19613083A1 (de) 1996-04-02 1996-04-02 Verfahren zur qualitativen Beurteilung von bearbeitetem Material
DE19613083 1996-04-02
EP97920565A EP0892722B1 (fr) 1996-04-02 1997-04-01 Procede pour evaluer la qualite d'un materiau traite

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP97920565A Division EP0892722B1 (fr) 1996-04-02 1997-04-01 Procede pour evaluer la qualite d'un materiau traite

Publications (2)

Publication Number Publication Date
EP0987110A1 true EP0987110A1 (fr) 2000-03-22
EP0987110B1 EP0987110B1 (fr) 2002-01-16

Family

ID=7790212

Family Applications (2)

Application Number Title Priority Date Filing Date
EP97920565A Expired - Lifetime EP0892722B1 (fr) 1996-04-02 1997-04-01 Procede pour evaluer la qualite d'un materiau traite
EP99118436A Expired - Lifetime EP0987110B1 (fr) 1996-04-02 1997-04-01 Procédé pour évaluer la qualité d'un matériau traité

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP97920565A Expired - Lifetime EP0892722B1 (fr) 1996-04-02 1997-04-01 Procede pour evaluer la qualite d'un materiau traite

Country Status (6)

Country Link
US (1) US6333987B1 (fr)
EP (2) EP0892722B1 (fr)
JP (1) JPH11507305A (fr)
DE (3) DE19613083A1 (fr)
ES (2) ES2170563T3 (fr)
WO (1) WO1997036749A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10049752A1 (de) 1999-10-11 2001-05-10 Heidelberger Druckmasch Ag Verfahren zur Erkennung der Lagegenauigkeit von Register und Falz-oder Schneidkanten an flachen Exemplaren
US7656930B2 (en) * 2001-09-10 2010-02-02 Digimarc Corporation Assessing quality of service using digital watermark information
US20020146120A1 (en) * 2001-04-05 2002-10-10 Hugh Anglin Inspecting print quality using digital watermarks
EP1727679B1 (fr) * 2004-03-23 2008-10-01 Koenig & Bauer AG Procede d'identification d'un exemplaire individuel a image imprimee de qualite defectueuse sur une matiere imprimee comportant plusieurs exemplaires
DE102004052181B3 (de) * 2004-07-23 2006-01-19 Koenig & Bauer Ag Verfahren zur Erkennung eines Bahnrisses einer in einer Rollendruckmaschine bedruckten Materialbahn
EP2492094A1 (fr) * 2011-02-25 2012-08-29 Bobst Bielefeld GmbH Appareil et procédé de vérification des couleurs
DE102013108485B4 (de) * 2013-08-06 2015-06-25 Khs Gmbh Vorrichtung und Verfahren zum Fehlertracking bei Bandmaterialien
WO2019036259A1 (fr) * 2017-08-15 2019-02-21 The General Hospital Corporation Procédé et système de photométrie modulaire multiplexe intégrée

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5187376A (en) * 1990-12-20 1993-02-16 Toshiba Kikai Kabushiki Kaisha Print monitoring apparatus with data processing
DE4432371A1 (de) * 1994-09-12 1996-03-14 Heidelberger Druckmasch Ag Verfahren zur Erfassung fehlerhafter Einzelnutzen beim Nutzendruck

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5213952B2 (fr) 1972-07-31 1977-04-18
DE3248928T1 (de) * 1981-07-29 1983-07-07 Dai Nippon Insatsu K.K., Tokyo Druck-inspektionsverfahren und vorrichtung zur durchfuehrung des verfahrens
US4677680A (en) * 1982-08-31 1987-06-30 Dai Nippon Insatsu Kabushiki Kaisha Method and device for inspecting image
DE3481595D1 (de) * 1983-06-02 1990-04-19 Wales R Langdon Registerregelung in geschlossener schleife.
US4736446A (en) * 1985-03-29 1988-04-05 Quad-Tech Inc. Cutoff control system
JPH0674112B2 (ja) * 1986-04-23 1994-09-21 三菱重工業株式会社 シート状の紙の自動選別装置
DE69008941T2 (de) * 1989-06-29 1994-12-15 De La Rue Giori Sa Tiefdruckmaschine zum Drucken von Wertpapieren.
DE4124397A1 (de) * 1990-07-23 1992-04-02 Lehner Rolf Peter Verfahren zum erkennen von fehlern in bedruckten bahnen
JP2931109B2 (ja) 1990-12-25 1999-08-09 東芝機械株式会社 印刷物監視装置
EP0540833B1 (fr) 1991-08-12 1997-04-23 KOENIG & BAUER-ALBERT AKTIENGESELLSCHAFT ContrÔle de qualité d'une image, par exemple un modèle imprimé
DE4142481A1 (de) 1991-08-12 1993-02-18 Koenig & Bauer Ag Qualitaetskontrolle einer bildvorlage z. b. eines gedruckten musters
DE4129126A1 (de) * 1991-09-02 1993-03-04 Memminger Iro Gmbh Verfahren zum feststellen von fehlern in einer textilen warenbahn
CH687138A5 (fr) * 1992-02-07 1996-09-30 Bobst Sa Dispositif de détection d'erreurs d'impression dans une machine à imprimer rotative.
US5305392A (en) * 1993-01-11 1994-04-19 Philip Morris Incorporated High speed, high resolution web inspection system
DE4321177A1 (de) * 1993-06-25 1995-01-05 Heidelberger Druckmasch Ag Vorrichtung zur parallelen Bildinspektion und Farbregelung an einem Druckprodukt
US5908541A (en) * 1997-09-09 1999-06-01 Elcorsy Technology Inc. Multicolor electrocoagulation printing method and apparatus

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5187376A (en) * 1990-12-20 1993-02-16 Toshiba Kikai Kabushiki Kaisha Print monitoring apparatus with data processing
DE4432371A1 (de) * 1994-09-12 1996-03-14 Heidelberger Druckmasch Ag Verfahren zur Erfassung fehlerhafter Einzelnutzen beim Nutzendruck

Also Published As

Publication number Publication date
DE59705282D1 (de) 2001-12-13
ES2170563T3 (es) 2002-08-01
ES2165605T3 (es) 2002-03-16
EP0987110B1 (fr) 2002-01-16
JPH11507305A (ja) 1999-06-29
EP0892722B1 (fr) 2001-11-07
EP0892722A1 (fr) 1999-01-27
DE59706033D1 (de) 2002-02-21
DE19613083A1 (de) 1997-10-09
US6333987B1 (en) 2001-12-25
WO1997036749A1 (fr) 1997-10-09

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