DE19901635A1 - Method for aligning double sided prints uses three high resolution cameras to monitor the frame alignment on both sides of the printed material - Google Patents
Method for aligning double sided prints uses three high resolution cameras to monitor the frame alignment on both sides of the printed materialInfo
- Publication number
- DE19901635A1 DE19901635A1 DE1999101635 DE19901635A DE19901635A1 DE 19901635 A1 DE19901635 A1 DE 19901635A1 DE 1999101635 DE1999101635 DE 1999101635 DE 19901635 A DE19901635 A DE 19901635A DE 19901635 A1 DE19901635 A1 DE 19901635A1
- Authority
- DE
- Germany
- Prior art keywords
- measuring
- resolution cameras
- distances
- monitor
- values
- 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- Withdrawn
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
- B41F33/0081—Devices for scanning register marks
Landscapes
- Inking, Control Or Cleaning Of Printing Machines (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren zur Bestimmung von Passermeßwerten auf Bedruckstoffen, insbesondere auf der Schön- und Widerdruckseite von Druckbögen.The invention relates to a method for determining register measurement values Printing materials, especially on the face and reverse side of printing sheets.
Bekannt sind Einrichtungen zur Bestimmung von Passermeßwerten wie beispielsweise zur Bestimmung des Wendepassers nach dem DE-U1 298 07 663, bei der zur Bestimmung der Lage von Bildpunkten, mitgedruckten Meßmarken, Skalen oder Sujetteilen der Schön- und Widerdruckseite von Druckbögen jeweils eine Meßvorrichtung zugeordnet ist. Zwischen die beiden Meßvorrichtungen wird dazu der auszumessende Bogen gelegt und hinsichtlich seiner Lage fixiert. Mittels der Schöndruckseite des Druckbogens zugeordneten Meßvorrichtung wird die Lage eines Bildpunktes, einer Marke oder einer Kante bestimmt. Nach einer daraufhin erfolgten Umdrehung der Einrichtung wird die Lage eines korrespondierenden Punktes, einer Marke oder einer Bildkante der Widerdruckseite bestimmt.Devices for determining register measurement values, such as for example, are known Determination of the reversing register according to DE-U1 298 07 663, for the determination of the Position of pixels, printed measuring marks, scales or subject parts of the beauty and A measuring device is assigned to the reverse side of printing sheets. Between the For this purpose, the measuring sheet is placed in both measuring devices and with regard to it Fixed location. By means of the measuring device assigned to the face side of the printing sheet the position of a pixel, a mark or an edge is determined. After a then rotation of the device becomes the position of a corresponding one Point, a mark or a picture edge of the reverse side determined.
Durch die oben beschriebene Einrichtung wird eine einfache Bestimmung des Wendepassers möglich. Nachteilig an dieser Einrichtung ist jedoch die relative Ungenauigkeit der Bestimmung der Passermeßwerte und die eingeschränkte Ermittlung der Ursachen der Passerabweichungen.The device described above makes it easy to determine the turning register possible. A disadvantage of this device, however, is the relative inaccuracy of the Determination of the register measurement values and the limited determination of the causes of the Register errors.
Die Aufgabe der Erfindung besteht deshalb in der Schaffung eines derartigen Verfahrens, mit dem eine höhere Genauigkeit bei der Bestimmung der Passermeßwerte erreicht und gleichzeitig die Ursachen von Passermeßwertabweichungen in einem breiteren Umfang effektiv erfaßt werden können.The object of the invention is therefore to create such a method with which achieves a higher accuracy in determining the register measurement values and at the same time the causes of register measurement deviations on a broader scale can be detected effectively.
Gelöst wird diese Aufgabe durch den kennzeichnenden Teil des Anspruches 1. Vorteilhafte Weiterbildungen des erfindungsgemäßen Verfahrens werden durch die Ansprüche 2 und 3 beschrieben. Nachfolgend soll das erfindungsgemäße Verfahren anhand eines Ausführungsbeispieles näher beschrieben werden. In der Zeichnung zeigtThis problem is solved by the characterizing part of claim 1. Advantageous Further developments of the method according to the invention are defined in claims 2 and 3 described. In the following, the method according to the invention will be based on a Embodiment are described in more detail. In the drawing shows
Fig. 1 die schematische Anordnung der Vorrichtungen bei der Durchführung des Verfahrens und Fig. 1 shows the schematic arrangement of the devices when performing the method and
Fig. 2 die Meßflächen, Bildmasken und zu ermittelnde Abstände bei der Verfahrensdurchführung. Fig. 2 shows the measuring surfaces, image masks and distances to be determined when carrying out the method.
In der Fig. 1 ist die Anordnung des als Papierbogen 1 dargestellten zu erfassenden Bedruckstoffes mit den hochauflösenden Kameras 2, 3, 4 abgebildet. Die Kamera 2 erfaßt die festgelegte Druckfläche des unteren Druckbereiches und die Kamera 3 den festgelegten oberen Druckbereich. Mit der dritten Kamera 4 werden die Abstände zur vorderen und seitlichen Bogenkante gleichzeitig erfaßt. Nach Auswertung aller ermittelten Werte kann dadurch die Ermittlung der Ursachen der Passermeßwertabweichen in einem breiteren Umfang erfolgen. Ursachen wie ein schräger oder krummer Beschnitt der Bedruckstoffe, die unterschiedliche Formatstabilität der Bedruckstoffe, Veränderungen der Bedruckstoffe durch die Schön- und Widerdruckbehandlung (Dehnung) und die durch Veränderungen der Maschinengeschwindigkeit verbundenen unterschiedlichen Ergreifungen der Bedruckstoffe während des Transportes durch die Druckmaschine können dadurch ermittelt werden.In FIG. 1, the arrangement is depicted as the paper sheet 1 illustrated printing material to be detected with the high resolution cameras 2, 3, 4. The camera 2 detects the defined printing area of the lower printing area and the camera 3 the defined upper printing area. With the third camera 4 , the distances to the front and side edge of the sheet are recorded simultaneously. After evaluating all the determined values, the causes of the register measured value deviations can thus be determined to a broader extent. Causes such as an oblique or crooked trimming of the printing materials, the different dimensional stability of the printing materials, changes in the printing materials due to the perfecting and offset printing treatment (stretching) and the different seizures of the printing materials due to changes in the machine speed during transport through the printing press can be determined.
Dazu werden mittels der Bildmasken 8, 9 die zu erfassenden Bildbereiche 7 "Druck unten", 5 "Druck oben" sowie 6 "Druck unten und Papier" festgelegt. Die obere Bildmaske 8 entspricht dabei genau der unteren Bildmaske 9 und ist auf der anderen Papierseite genau gegenüber angeordnet. Der auch dort vorhandene Bildbereich Papier wird nicht ausgewertet, da die Meßwerte "Oben zu Papier" aus den Meßwerten "Unten zu Papier" und dem Verhältniswert "Oben zu Unten" berechnet werden können. Durch die bekannten Positionen der Bildmasken 8, 9 können die Meßwerte berechnet werden, ohne daß die obere Kamera 3 Werte des unteren Bildbereiches 7 erfaßt und die untere Kamera 2 Werte vom oberen Bildbereich 5.For this purpose, the image areas 7 “print below”, 5 “print above” and 6 “print below and paper” are defined using the image masks 8 , 9 . The upper image mask 8 corresponds exactly to the lower image mask 9 and is arranged exactly opposite on the other paper side. The paper image area also present there is not evaluated because the measured values "top to paper" can be calculated from the measured values "bottom to paper" and the ratio "top to bottom". Due to the known positions of the image masks 8 , 9 , the measured values can be calculated without the upper camera 3 acquiring values from the lower image area 7 and the lower camera 2 values from the upper image area 5 .
Nach erfolgter Auswertung der Meßwerte auf die zugrundeliegenden Ursachen der Passermeßwertabweichungen hin können diese durch manuelle Justierungen oder automatische maschinentechnische Steuervorgänge beseitigt werden. Damit wird die Qualität der Druckprodukte erhöht. After evaluating the measured values for the underlying causes of the Deviations in register values can be made by manual adjustments or automatic machine control processes are eliminated. So that is quality of the printed products increased.
11
Papierbogen
Sheets of paper
22nd
Kamera
camera
33rd
Kamera
camera
44th
Kamera
camera
55
Bildbereich
Image area
66
Bildbereich
Image area
77
Bildbereich
Image area
88th
Bildmaske
Image mask
99
Bildmaske
Image mask
1010th
Meßmarke
Measuring mark
1111
Absolutmaß für Papierbogen
Absolute size for paper sheets
1212th
Absolutmaß für "Druck unten"
Absolute measure for "pressure down"
1313
errechenbare Abstände
calculable distances
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1999101635 DE19901635A1 (en) | 1999-01-19 | 1999-01-19 | Method for aligning double sided prints uses three high resolution cameras to monitor the frame alignment on both sides of the printed material |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1999101635 DE19901635A1 (en) | 1999-01-19 | 1999-01-19 | Method for aligning double sided prints uses three high resolution cameras to monitor the frame alignment on both sides of the printed material |
Publications (1)
Publication Number | Publication Date |
---|---|
DE19901635A1 true DE19901635A1 (en) | 2000-07-20 |
Family
ID=7894531
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE1999101635 Withdrawn DE19901635A1 (en) | 1999-01-19 | 1999-01-19 | Method for aligning double sided prints uses three high resolution cameras to monitor the frame alignment on both sides of the printed material |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE19901635A1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10322547A1 (en) * | 2003-05-20 | 2004-12-09 | Koenig & Bauer Ag | Determining and correcting register deviations for mutually printed arcs in an arc printing machine, by determining position of register marks at front and rear side of arc to enable the positional adjustment of the pneumatic cylinders |
WO2005077658A1 (en) * | 2004-02-16 | 2005-08-25 | Eastman Kodak Company | Method for the detection of marks and printing machine |
DE102009056861A1 (en) | 2008-12-15 | 2010-07-01 | Heidelberger Druckmaschinen Ag | Measuring instrument for register mark- and/or register measurements in graphic industry, has position sensor for scanning surface and detecting position of video camera concerning surface of printing substrates |
DE10127249B4 (en) * | 2000-06-28 | 2013-05-02 | Heidelberger Druckmaschinen Ag | Method for determining a position of a printed image and monitoring device for a printing machine |
CN101513804B (en) * | 2007-12-07 | 2013-05-29 | 海德堡印刷机械股份公司 | Method for drying printed material |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2848963A1 (en) * | 1978-02-13 | 1979-08-16 | Polygraph Leipzig | PASS MARK EVALUATION DEVICE ON MULTICOLOR PRINTING MACHINES |
DE29807663U1 (en) * | 1998-04-28 | 1998-08-06 | Roland Man Druckmasch | Device for determining the reversing register for sheets printed on the face and reverse side |
-
1999
- 1999-01-19 DE DE1999101635 patent/DE19901635A1/en not_active Withdrawn
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2848963A1 (en) * | 1978-02-13 | 1979-08-16 | Polygraph Leipzig | PASS MARK EVALUATION DEVICE ON MULTICOLOR PRINTING MACHINES |
DE29807663U1 (en) * | 1998-04-28 | 1998-08-06 | Roland Man Druckmasch | Device for determining the reversing register for sheets printed on the face and reverse side |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10127249B4 (en) * | 2000-06-28 | 2013-05-02 | Heidelberger Druckmaschinen Ag | Method for determining a position of a printed image and monitoring device for a printing machine |
DE10322547A1 (en) * | 2003-05-20 | 2004-12-09 | Koenig & Bauer Ag | Determining and correcting register deviations for mutually printed arcs in an arc printing machine, by determining position of register marks at front and rear side of arc to enable the positional adjustment of the pneumatic cylinders |
WO2005077658A1 (en) * | 2004-02-16 | 2005-08-25 | Eastman Kodak Company | Method for the detection of marks and printing machine |
US8160361B2 (en) | 2004-02-16 | 2012-04-17 | Eastman Kodak Company | Method for the detection of marks and printing machine |
CN101513804B (en) * | 2007-12-07 | 2013-05-29 | 海德堡印刷机械股份公司 | Method for drying printed material |
DE102009056861A1 (en) | 2008-12-15 | 2010-07-01 | Heidelberger Druckmaschinen Ag | Measuring instrument for register mark- and/or register measurements in graphic industry, has position sensor for scanning surface and detecting position of video camera concerning surface of printing substrates |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OP8 | Request for examination as to paragraph 44 patent law | ||
8130 | Withdrawal |