EP1862309A2 - Dispositif de détection - Google Patents
Dispositif de détection Download PDFInfo
- Publication number
- EP1862309A2 EP1862309A2 EP07109333A EP07109333A EP1862309A2 EP 1862309 A2 EP1862309 A2 EP 1862309A2 EP 07109333 A EP07109333 A EP 07109333A EP 07109333 A EP07109333 A EP 07109333A EP 1862309 A2 EP1862309 A2 EP 1862309A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- sensor device
- printing
- sections
- sensor
- strip
- 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
Definitions
- the invention relates to a sensor device for the optical detection of strip-shaped printing surfaces on along a printing substrate moving substrates according to the preamble of the first claim.
- a method for the synchronized operation of a plurality of electronic cameras is known in which the individual cameras simultaneously record one image in response to a trigger signal and the image data of the individual cameras are combined to form an overall image.
- a first number of image lines are first read from each camera and discarded.
- a second predetermined number of image lines are read in succession in a predetermined order of the cameras from each camera, and processed into an overall image.
- the remaining image lines are read out independently of the other cameras and the read-out image data is discarded.
- a disadvantage of this solution is the cost of the large number of cameras, the cost of synchronizing the cameras and the low image data processing speed due to the complex data handling.
- the invention is therefore based on the object, the effort for a sensor device with strip-shaped detection range, which is suitable for a spectral density measurement or color control based on print control strips to reduce.
- a sensor device by the combination of a low-cost RGB or SW area camera having a matrix sensor, with an arrangement of mirrors or prisms, wherein successive by the optical means in the direction of the main extent of the strip-shaped printing surface to be controlled Area sections (in the case of print control strips, this is generally the width of the substrate) are adjacent to each other and can be projected line by line onto the matrix sensor.
- the invention has the advantages that the native resolution of the sensor matrix is fully utilized by the optical splitting of the printing surface strip into strip sections and at the same time the disadvantage of CCD matrix sensors, which consists in that the matrix sensor can not be addressed line by line, but the entire sensor matrix is read out serially must be overcome.
- an area camera 3 is arranged laterally on a printing material web in a rotary printing press, wherein the printing material 2 can be designed to be roll-shaped or arc-shaped.
- the printed material 2 transported in the direction of the arrow has conventional print control strips 1.K, which extend as a strip-shaped printing surface 1 in printed image edge regions transversely to the transport direction and are applied for color control or print quality control.
- optical means 5 designed as a mirror 5.
- the mirror 5.S partially avoid the mutual shading perpendicular to optical axis 8 of the area camera 3 are offset by their width to each other and approximately parallel rays directed to the matrix sensor 4. Instead of the mirrors 5.
- prisms for beam deflection can also be used on the matrix sensor 4.
- Each mirror 5.S is assigned a section 6 of the print control strip 1.K whose image is reflected by the mirror 5.S. towards the area camera 3.
- the mirrors 5.S are aligned in such a way that the images of the juxtaposed sections 6 of the print control strip 1.K can be projected among one another on row groups 7 of the matrix sensor 4 (FIG. 2).
- a lighting device 9 is arranged on the printing substrate, which is synchronized with the area camera 3 and the adjacent sections 6 of the print control strip 1.K pulsed line lighting.
- a linear lighting can be realized, for example, with cylindrical lenses.
- the illumination device 9 has a short flash time and can be formed from light sources with different monochromatic light spectra, for example red, blue and green LED groups. By flashing with different illumination spectra, it is possible to use the area camera 3 as a spectral, Tristimulusfarb- or density sensor.
- the light sources are expediently controllable in sections in their flashlight intensity in order to compensate for different emission properties of the light sources and the different projection distances (object widths) between the sections 6 of the print control strips 1.K and the area camera 3 and the associated different light intensities of the images projected onto the matrix sensor 4.
- the illumination device 9 is advantageously arranged at a vertical angle of 0 or 45 ° to the mirrors 5.S to minimize reflections.
- the area camera 3 is advantageously slightly oblique to the surface of the printing material 2, in order to achieve a flat as possible arrangement and the projection of a rectangular strip on the matrix sensor 4.
- the mirrors 5.S are preferably equipped with different radii of curvature to compensate for different magnifications depending on the object's width.
- special lenses can be used for the area camera 3, in which the beam path does not open, but runs parallel.
- the same magnification always applies and the mirrors 5.S can be made simpler.
- the sensor device When the print control strip 1.K enters the detection range of the sensor device, the sensor device is activated, the lighting device 9 is triggered and an image of the print control strip 1.K is detected by the area camera 3 and stored in a known manner or further processed for a printing machine control.
- search methods in the data array can subsequently be applied to the image acquisition in order to separate the desired image data from the non-relevant image data. This is particularly advantageous in the case of narrow print control strips 1.K if print image areas surrounding the print control strip 1.K are also detected by matrix sensor 4, which do not belong to print control strip 1.K and therefore from the image data array prior to further processing for a substrate quality control, color control or printing machine control must be discarded.
- the proposed sensor device is not limited to the image analysis of print control strips 1.K, but also for all other image acquisition functions of strip-shaped Pressure surfaces 1 with a dominant direction of extension can be used transversely or longitudinally to the transport direction.
Landscapes
- Engineering & Computer Science (AREA)
- Quality & Reliability (AREA)
- Inking, Control Or Cleaning Of Printing Machines (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
- Studio Devices (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200610025324 DE102006025324A1 (de) | 2006-05-31 | 2006-05-31 | Sensoreinrichtung |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1862309A2 true EP1862309A2 (fr) | 2007-12-05 |
EP1862309A3 EP1862309A3 (fr) | 2008-05-28 |
EP1862309B1 EP1862309B1 (fr) | 2012-09-12 |
Family
ID=38582290
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20070109333 Expired - Fee Related EP1862309B1 (fr) | 2006-05-31 | 2007-05-31 | Dispositif de détection |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1862309B1 (fr) |
JP (1) | JP2007327953A (fr) |
DE (1) | DE102006025324A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20210187503A1 (en) * | 2019-12-19 | 2021-06-24 | Personal Genomics Taiwan, Inc. | Apparatus and system for single-molecule nucleic acids detection |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008020505A1 (de) | 2008-04-23 | 2009-10-29 | Zind, Oliver, Dipl.-Ing. | Bildaufnahem- und Farbmesssystem |
DE102022134232A1 (de) | 2022-12-20 | 2024-06-20 | Manroland Goss Web Systems Gmbh | Vorrichtung und Verfahren zur Ermittlung von Farbdichten |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4136461A1 (de) | 1991-11-06 | 1993-05-19 | Roland Man Druckmasch | Verfahren und vorrichtung zur grossflaechigen bildinspektion |
DE102004033495A1 (de) | 2004-01-25 | 2005-08-11 | Man Roland Druckmaschinen Ag | Verfahren zum synchronisierten Betrieb einer Vielzahl elektronischer Kameras |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT390684B (de) * | 1985-10-14 | 1990-06-11 | Oesterr Nationalbank | Verfahren und vorrichtung zum erkennen von druckbildfehlern an prueflingen, insbesondere an banknoten |
DE4321177A1 (de) * | 1993-06-25 | 1995-01-05 | Heidelberger Druckmasch Ag | Vorrichtung zur parallelen Bildinspektion und Farbregelung an einem Druckprodukt |
DE19850335B4 (de) * | 1998-11-02 | 2008-06-05 | Metso Paper Automation Oy | Vorrichtung zum Erfassen von Eigenschaften einer in Längsrichtung transportierten Warenbahn |
EP1445099A1 (fr) * | 2003-02-10 | 2004-08-11 | Kba-Giori S.A. | Capteur |
-
2006
- 2006-05-31 DE DE200610025324 patent/DE102006025324A1/de not_active Withdrawn
-
2007
- 2007-05-31 JP JP2007145879A patent/JP2007327953A/ja not_active Withdrawn
- 2007-05-31 EP EP20070109333 patent/EP1862309B1/fr not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4136461A1 (de) | 1991-11-06 | 1993-05-19 | Roland Man Druckmasch | Verfahren und vorrichtung zur grossflaechigen bildinspektion |
DE102004033495A1 (de) | 2004-01-25 | 2005-08-11 | Man Roland Druckmaschinen Ag | Verfahren zum synchronisierten Betrieb einer Vielzahl elektronischer Kameras |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20210187503A1 (en) * | 2019-12-19 | 2021-06-24 | Personal Genomics Taiwan, Inc. | Apparatus and system for single-molecule nucleic acids detection |
Also Published As
Publication number | Publication date |
---|---|
JP2007327953A (ja) | 2007-12-20 |
EP1862309A3 (fr) | 2008-05-28 |
DE102006025324A1 (de) | 2007-12-13 |
EP1862309B1 (fr) | 2012-09-12 |
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