EP2110355A1 - Dispositif de détermination optique de la position latérale de caractéristiques sur des bandes de matériau en continu et procédé de fonctionnement de ce dispositif - Google Patents

Dispositif de détermination optique de la position latérale de caractéristiques sur des bandes de matériau en continu et procédé de fonctionnement de ce dispositif Download PDF

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Publication number
EP2110355A1
EP2110355A1 EP08007671A EP08007671A EP2110355A1 EP 2110355 A1 EP2110355 A1 EP 2110355A1 EP 08007671 A EP08007671 A EP 08007671A EP 08007671 A EP08007671 A EP 08007671A EP 2110355 A1 EP2110355 A1 EP 2110355A1
Authority
EP
European Patent Office
Prior art keywords
light
der
features
lighting
light source
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Withdrawn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
EP08007671A
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German (de)
English (en)
Inventor
Frank Trilling
Peter Kespohl
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.)
Fife Tidland GmbH
Original Assignee
Fife Tidland 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 Fife Tidland GmbH filed Critical Fife Tidland GmbH
Priority to EP08007671A priority Critical patent/EP2110355A1/fr
Priority to US12/231,358 priority patent/US20090262352A1/en
Priority to TW098112297A priority patent/TW200946900A/zh
Priority to JP2009101315A priority patent/JP2009258111A/ja
Publication of EP2110355A1 publication Critical patent/EP2110355A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/02—Registering, tensioning, smoothing or guiding webs transversely
    • B65H23/0204—Sensing transverse register of web
    • B65H23/0216—Sensing transverse register of web with an element utilising photoelectric effect

Definitions

  • the invention relates to a device for the optical detection of features on moving webs of material and a method in the operation of this device.
  • Devices of this type are used in industry to control the lateral position of moving webs of material so that the detected feature of the web is maintained at a desired lateral position, even when interfering influences on the web. Control circuits that perform this task are known and often described. An early form is in the patent US 3 431 425 (1969 ).
  • control circuits In order to meet the increasing demands of the processing industry, these control circuits have been developed over time.
  • the optical sensor for detecting the control feature was the goal of continuous development in order to use difficult to detect features for lateral material web control.
  • Features in the sense considered here can be given in the case of printed material webs through parts of a printed image, but also color differences in the material web itself or partial coatings of the web surface should often be used as a feature to regulate the position of the web.
  • This type of optical sensor usually includes one or more light sources, one or more photosensitive receiving elements, light beam forming elements such as lenses, apertures and mirrors and electronic elements for processing the output signals of the photosensitive receiving elements. If necessary, keys and display elements for the operation of the sensor can still be present.
  • photosensitive receiving elements integrated CMOS or CCD circuits are nowadays used, in which a plurality of these receiving elements are combined on a semiconductor crystal and which are preferably arranged in rows for the object under consideration here. Together with the imaging optical elements of such a sensor, this results in a line-shaped scanning region on the surface of the material web which is preferably arranged orthogonal to the direction of movement of the material web.
  • the features to be recorded can, as already in U.S. 3,431,425 specified, linear features or recurring patterns such as bar codes, which are often printed on packaging material. Other, clearly recognizable patterns can also be used as a control feature with the methods of image processing available today.
  • the edge of the web itself can give a corresponding contrast to the surface of a supporting roll and then be used as a feature for position control.
  • Gloss differences of the kind considered can also arise, for example, at the border between glossy coating and uncoated, non-glossy material surface. The same can also be caused by partial mechanical surface treatment or other forms of surface treatment. It is also possible that the edge of a glossy, transparent material surface should be used for position regulation, in contrast to a not less shiny back-up roller or against another background.
  • a recurring task is to use color characteristics of the material web for position control at one and the same point in a system for a production process and gloss features for another production process.
  • the invention is based on the object of providing an optical combination sensor which can be switched over in order to scan color features, even if they lie under a transparent glossy coating, and on the other hand can be used to reliably detect features which are in the form of gloss differences the surface of a material web are present, even if they are applied to light substrates or printed material webs.
  • the second illumination device to be used for detecting gloss features is formed by a point source as light as possible and an optical condenser.
  • point light source is a single-color LED in question, since on the one hand, the light-emitting surface of such a light-emitting diode is very small and thus the punctiform light source is approximated in a very good manner and on the other hand, because in the light reflection on shiny surfaces, the light color (wavelength) plays a subordinate role.
  • Another possibility is the use of a diaphragm with a correspondingly small light exit opening.
  • the maximum diameter of the light emitting diode or a diaphragm depends on the minimum required resolution on the receiver side and the parameters of the light guide.
  • a specific requirement for the resolution results from a size of the photosensitive receiving elements of 12.5 ⁇ m and for a length of the detection range (extension perpendicular to the running direction of the material). of 30 mm and a required resolution of about 125 lines a maximum diameter of the light source of 1 mm.
  • the optical geometry namely the distance between the punctiform light source and the condenser (to be considered as a preferred example of the focusing optics)
  • the focal length of the condenser lens (s) and the sum of the distances between the condenser and the detection area and between the detection area and the lens Imaging system is selected according to claim 1, then it is ensured that all reflected in the detection range of the material web rays also reach the receiving elements.
  • Fig. 1 only by way of example and not to scale shown in three views section of a material web to be scanned consists of running in the direction of the arrow material web 1, on which are shown as obliquely hatched squares pattern 3 printed. Other areas are provided with a transparent glossy coating 5, said shaded areas in the running direction partially overlap with the patterns 3. Furthermore, marked with 7 of the detection area on the web, which is evaluated cyclically repeated by the optical sensor. Depending on the web speed, the various combinations of print image and gloss coating run through the detection area.
  • Fig. 2 shows schematically the components of a device according to the invention.
  • an optical imaging system which consists of an objective 14 and receiving elements 16, wherein the objective 14 images the image of the material web in the detection region 7 onto the receiving elements 16.
  • the imaging system is inclined to the normal to the web 1; his ray of sight closes with this one angle ⁇ .
  • first illumination device 20 which lies on the same side as the imaging system and whose light beams impinge at a smaller angle ⁇ . Insofar as specular reflection takes place in the detection area, the rays reflected at the same angle ⁇ go far past the objective 10 of the optical imaging system.
  • This first illumination device 20 is used primarily for scanning color features. Only rays of diffuse reflection accordingly 3 c can reach the lens 14.
  • the illumination device 20 is composed of a plurality of light elements, which have different light colors and can be switched on and off individually.
  • light emitting diodes which emit light of different wavelengths are used for this purpose.
  • light-emitting diodes with the colors red, green and blue are used.
  • different colored LEDs are added as needed, for example, light emitting diodes in the infrared range or in the UV range light.
  • a second illumination device consists of a point light source 10 and a focusing optics 12 and is relative to the normal to the web 1 on the other side at the angle ⁇ , so that their rays are directed at the lens 14 in specular reflection.

Landscapes

  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Spectrometry And Color Measurement (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
EP08007671A 2008-04-19 2008-04-19 Dispositif de détermination optique de la position latérale de caractéristiques sur des bandes de matériau en continu et procédé de fonctionnement de ce dispositif Withdrawn EP2110355A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP08007671A EP2110355A1 (fr) 2008-04-19 2008-04-19 Dispositif de détermination optique de la position latérale de caractéristiques sur des bandes de matériau en continu et procédé de fonctionnement de ce dispositif
US12/231,358 US20090262352A1 (en) 2008-04-19 2008-09-02 Device for the optical detection of the lateral position of characteristics on traveling material webs and method for operating this device
TW098112297A TW200946900A (en) 2008-04-19 2009-04-14 Device for the optical detection of the lateral position of characteristics on traveling material webs and method for operating this device
JP2009101315A JP2009258111A (ja) 2008-04-19 2009-04-17 進行する材料ウェブ上の目印の横方向位置の光学的検出装置および上記装置の操作方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP08007671A EP2110355A1 (fr) 2008-04-19 2008-04-19 Dispositif de détermination optique de la position latérale de caractéristiques sur des bandes de matériau en continu et procédé de fonctionnement de ce dispositif

Publications (1)

Publication Number Publication Date
EP2110355A1 true EP2110355A1 (fr) 2009-10-21

Family

ID=39806217

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08007671A Withdrawn EP2110355A1 (fr) 2008-04-19 2008-04-19 Dispositif de détermination optique de la position latérale de caractéristiques sur des bandes de matériau en continu et procédé de fonctionnement de ce dispositif

Country Status (4)

Country Link
US (1) US20090262352A1 (fr)
EP (1) EP2110355A1 (fr)
JP (1) JP2009258111A (fr)
TW (1) TW200946900A (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6628358B2 (ja) * 2015-06-25 2020-01-08 株式会社ニレコ ウェブ検出装置及び検出方法
US10358307B1 (en) * 2018-03-28 2019-07-23 Xerox Corporation Leading/trailing edge detection system having vacuum belt with perforations

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3431425A (en) 1965-03-01 1969-03-04 Fife Mfg Co System for photoelectric control of moving webs
US4727260A (en) * 1985-03-29 1988-02-23 Erhardt & Leimer Gmbh Photoelectric scanner with light-reflector or light barrier
DE3637874A1 (de) 1986-11-06 1988-05-19 Erhardt & Leimer Gmbh Vorrichtung zur erfassung und regelung der bahnkantenlage
DE10022597A1 (de) 2000-05-10 2001-11-29 Erhardt & Leimer Gmbh Vorrichtung zum Erfassen der Randkante und/oder einer Markierung einer laufenden Warenbahn
US6566670B1 (en) 2000-04-13 2003-05-20 Accuweb, Inc. Method and system for guiding a web of moving material
EP1623943A1 (fr) * 2004-08-04 2006-02-08 FMS Force Measuring Systems Ag Dispositif et méthode pour détecter une caractéristique d'une bande en mouvement
US20070241293A1 (en) * 2006-04-17 2007-10-18 Buisker Raymond A Method and system for detecting the position of an edge of a web

Family Cites Families (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3225988A (en) * 1963-08-07 1965-12-28 Koppers Co Inc Ultrasonic web position detector and aligning means
US3342284A (en) * 1966-01-10 1967-09-19 James D Baird Web position measuring device and method
US3570624A (en) * 1966-06-27 1971-03-16 Lummus Co Web tracking and control
US3985449A (en) * 1975-02-07 1976-10-12 International Business Machines Corporation Semiconductor color detector
US4003660A (en) * 1975-12-03 1977-01-18 Hunter Associates Laboratory, Inc. Sensing head assembly for multi-color printing press on-line densitometer
US4184080A (en) * 1977-06-30 1980-01-15 Molins Machine Company, Inc. Ratiometric edge detector system
DE2919472C2 (de) * 1979-05-15 1986-01-16 Erhardt & Leimer Kg, 8900 Augsburg Vorrichtung zum kontinuierlichen Extrudieren von Schlauchfolien mit Bahnbreitenregelung
DE2928641C2 (de) * 1979-07-16 1982-10-14 Erhardt & Leimer Kg, 8900 Augsburg Vorrichtung zum Ausbreiten und Führen einer Wirkwarenbahn
US4308456A (en) * 1979-11-19 1981-12-29 Versatile Integrated Modules Method and apparatus for measuring the frequency of radiation
DE3222629A1 (de) * 1982-06-16 1983-12-22 Betriebsforschungsinstitut VDEh - Institut für angewandte Forschung GmbH, 4000 Düsseldorf Vorrichtung zur einstellung der lage einer kante
DE3239565A1 (de) * 1982-10-26 1984-04-26 Erhardt & Leimer Kg Vorrichtung zum zentrieren eines drehrahmens
DE3242219C1 (de) * 1982-11-15 1984-02-16 Erwin Sick Gmbh Optik-Elektronik, 7808 Waldkirch Optisches Markenerkennungsgeraet
EP0109686B1 (fr) * 1982-11-22 1989-10-11 Hitachi Maxell Ltd. Capteur de couleur
US4541713A (en) * 1983-01-19 1985-09-17 Konishiroku Photo Industry Co., Ltd. Document size-detecting device of copying machine
NL8400380A (nl) * 1984-02-07 1985-09-02 Optische Ind De Oude Delft Nv Inrichting voor het detecteren van kleurverschillen.
DE3614981A1 (de) * 1986-05-02 1987-11-05 Erhardt & Leimer Gmbh Verfahren und vorrichtung zum fuehren einer laufenden warenbahn
US4760606A (en) * 1986-06-30 1988-07-26 Wang Laboratories, Inc. Digital imaging file processing system
US4931636A (en) * 1988-08-26 1990-06-05 The Boeing Company Two wavelength optical sensor and sensing system
US4938404A (en) * 1989-07-14 1990-07-03 Advance Systems, Inc. Apparatus and method for ultrasonic control of web
JPH07151706A (ja) * 1993-09-03 1995-06-16 Minnesota Mining & Mfg Co <3M> 物品の欠陥検知装置及びその使用方法
JPH10322519A (ja) * 1997-05-16 1998-12-04 Nikon Corp 照明装置及び画像読取装置
EP1563294B1 (fr) * 2002-11-13 2006-12-13 Uster Technologies AG Dispositif de balayage d'un fil au moyen d'un rayon lumineux
GB2401678B (en) * 2003-01-14 2005-08-17 Qti Presstech Ltd Improvements to scanning heads

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3431425A (en) 1965-03-01 1969-03-04 Fife Mfg Co System for photoelectric control of moving webs
US4727260A (en) * 1985-03-29 1988-02-23 Erhardt & Leimer Gmbh Photoelectric scanner with light-reflector or light barrier
DE3637874A1 (de) 1986-11-06 1988-05-19 Erhardt & Leimer Gmbh Vorrichtung zur erfassung und regelung der bahnkantenlage
US6566670B1 (en) 2000-04-13 2003-05-20 Accuweb, Inc. Method and system for guiding a web of moving material
DE10022597A1 (de) 2000-05-10 2001-11-29 Erhardt & Leimer Gmbh Vorrichtung zum Erfassen der Randkante und/oder einer Markierung einer laufenden Warenbahn
EP1623943A1 (fr) * 2004-08-04 2006-02-08 FMS Force Measuring Systems Ag Dispositif et méthode pour détecter une caractéristique d'une bande en mouvement
US20070241293A1 (en) * 2006-04-17 2007-10-18 Buisker Raymond A Method and system for detecting the position of an edge of a web

Also Published As

Publication number Publication date
JP2009258111A (ja) 2009-11-05
TW200946900A (en) 2009-11-16
US20090262352A1 (en) 2009-10-22

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