EP0316585B1 - Verfahren zur automatischen Positionsfindung von Druckkontrollstreifen für automatisch messende Farbdichtemessanlagen - Google Patents

Verfahren zur automatischen Positionsfindung von Druckkontrollstreifen für automatisch messende Farbdichtemessanlagen Download PDF

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Publication number
EP0316585B1
EP0316585B1 EP88117190A EP88117190A EP0316585B1 EP 0316585 B1 EP0316585 B1 EP 0316585B1 EP 88117190 A EP88117190 A EP 88117190A EP 88117190 A EP88117190 A EP 88117190A EP 0316585 B1 EP0316585 B1 EP 0316585B1
Authority
EP
European Patent Office
Prior art keywords
measuring
print control
control strip
measuring head
search
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
EP88117190A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0316585A2 (de
EP0316585A3 (en
Inventor
Rolf Braun
Alfred Dorn
Joachim Müller
Franz Lampersberger
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.)
Manroland AG
Original Assignee
MAN Roland Druckmaschinen 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 MAN Roland Druckmaschinen AG filed Critical MAN Roland Druckmaschinen AG
Priority to AT88117190T priority Critical patent/ATE100760T1/de
Publication of EP0316585A2 publication Critical patent/EP0316585A2/de
Publication of EP0316585A3 publication Critical patent/EP0316585A3/de
Application granted granted Critical
Publication of EP0316585B1 publication Critical patent/EP0316585B1/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

Definitions

  • the invention relates to a method for automatically determining the position of the measuring fields of a print control strip according to the preamble of claim 1.
  • a method for automatically finding the position of print control strips for automatically measuring color density measuring systems is known, for example, from EP 0 149 424 A1.
  • This method is very complex since it requires an additional information code in addition to the actual print control strip, which has to be provided and increases the printing costs insofar as a wider paper margin, which is not available for printing, is necessary.
  • the post-published DE 36 31 204 A1 describes a method and a device in which the position of the print control strip is determined by direct scanning thereof.
  • a method for determining the position of print control strips in which a measuring head scans the measurement template in zigzag movements and searches for the print control strip. This procedure will not work if the print control strip is not completely present. This is always the case when a multi-color print control strip is not printed in all or only in one color. It is a matter of chance here whether the search optics runs over printed or unprinted sections of the print control strip.
  • Certain measuring heads are designed in such a way that they are supported by a wheel or a skid on the print template. The zigzag movements make the fresh printing ink smeared on the template, the measuring head itself is also contaminated with printing ink.
  • DE 3 614 092 A1 discloses a method and an arrangement for measuring color measuring strips printed on printed products, in which the measuring head can be moved in an X-direction and in a Y-direction with respect to the printing sheet and in which the color measuring strip can be searched for found in the Y direction and its location is saved.
  • the invention is based on the object of expanding or creating a method according to the preamble of claim 1 and a device suitable for carrying out this method, so that the position of a pressure control strip can also be approached by a measuring head if it is only incomplete, ie running with interruptions.
  • the search movement on one fixed, marked position allows the print template to be created so that there is also a measuring field at the search position. If you design the measuring system so that the wheel or runner are in front of the search optics and if you run the search on the first measuring field of the measuring strip, then the search movement does not smear the print template.
  • a second or even further measurement template is positioned anywhere on the measuring system with respect to the X direction. Then he drives Measuring head with the stored Y position on the first measuring field of the pressure control strip, stops and checks whether there is a Y deviation, makes a correction in the Y direction if necessary and starts the measurement in the X direction with this Y position.
  • the template can be created here with respect to the X direction.
  • the detection of the first measuring field and the positioning in the Y direction take place automatically and before the measuring movement begins.
  • the only requirement for this procedure is that the positional deviation in the original is not so large compared to the stored value that the search optics with all scanning beams lie outside the first measuring field.
  • the measuring head 1 is placed on a rail 5 on a control table 11 such that the first measuring field 8 of a print control strip 7 arranged on the print template 6 lies above the marking 9 of the rail.
  • the measuring head 1 of the system is then set in motion in the X direction. Due to a displacement sensor 2, the measuring head stops at the marking 9 and starts to move in the Y direction.
  • the measuring head 1 passes over the first measuring field 8.
  • the measuring signal picked up by the measuring head 1 is determined by the size of the measuring field 8 and can thus be recognized as such. Interference signals due to contamination etc. can thus be eliminated.
  • the Y position of the measuring field is saved.
  • the measuring head moves to its starting position in order to then start the measuring run in the correct Y position, as shown in FIG. 2.
  • the coordinates X1 and Y1 determine the start of the measuring run.
  • a microcomputer 10 controls the processes.

Landscapes

  • Engineering & Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Spectrometry And Color Measurement (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Length Measuring Devices By Optical Means (AREA)
EP88117190A 1987-11-16 1988-10-15 Verfahren zur automatischen Positionsfindung von Druckkontrollstreifen für automatisch messende Farbdichtemessanlagen Expired - Lifetime EP0316585B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88117190T ATE100760T1 (de) 1987-11-16 1988-10-15 Verfahren zur automatischen positionsfindung von druckkontrollstreifen fuer automatisch messende farbdichtemessanlagen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873738850 DE3738850A1 (de) 1987-11-16 1987-11-16 Verfahren zur automatischen positionsfindung von druckkontrollstreifen fuer automatisch messende farbdichtemessanlagen
DE3738850 1987-11-16

Publications (3)

Publication Number Publication Date
EP0316585A2 EP0316585A2 (de) 1989-05-24
EP0316585A3 EP0316585A3 (en) 1990-10-10
EP0316585B1 true EP0316585B1 (de) 1994-01-26

Family

ID=6340583

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88117190A Expired - Lifetime EP0316585B1 (de) 1987-11-16 1988-10-15 Verfahren zur automatischen Positionsfindung von Druckkontrollstreifen für automatisch messende Farbdichtemessanlagen

Country Status (7)

Country Link
US (1) US4963028A (enrdf_load_stackoverflow)
EP (1) EP0316585B1 (enrdf_load_stackoverflow)
JP (1) JP2513812B2 (enrdf_load_stackoverflow)
AT (1) ATE100760T1 (enrdf_load_stackoverflow)
BR (1) BR8805521A (enrdf_load_stackoverflow)
DE (2) DE3738850A1 (enrdf_load_stackoverflow)
ES (1) ES2049237T3 (enrdf_load_stackoverflow)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5208655A (en) * 1991-08-07 1993-05-04 Graphics Microsystems, Inc. Method and apparatus for automatic densitometer alignment
JP2526454B2 (ja) * 1991-10-31 1996-08-21 株式会社島津製作所 分光光度計の試料室
EP0781401B1 (en) * 1994-09-14 2004-11-24 X-Rite, Inc. Scanning colorimeter
US5774225A (en) 1996-03-27 1998-06-30 Advanced Vision Technology, Ltd. System and method for color measurement and control on-press during printing
DE19942468C1 (de) * 1999-09-06 2001-02-08 Saechsisches Inst Fuer Die Dru Verfahren und Vorrichtung zur Qualitätsdatenerfassung von Druckprodukten
JP2003311933A (ja) * 2002-04-24 2003-11-06 Dainippon Screen Mfg Co Ltd パッチ測定装置およびそれを組み込んだ印刷装置
US7502116B2 (en) * 2003-09-09 2009-03-10 Hewlett-Packard Development Company, L.P. Densitometers and methods for measuring optical density
US7345763B2 (en) * 2004-04-30 2008-03-18 X-Rite, Inc. Method for operating a color measurement system
KR100556442B1 (ko) 2005-01-04 2006-03-03 엘지전자 주식회사 진공 청소기의 집진장치
US8717647B2 (en) * 2005-10-13 2014-05-06 Hewlett-Packard Development Company, L.P. Imaging methods, imaging device calibration methods, imaging devices, and hard imaging device sensor assemblies
GB2586552B (en) * 2018-05-25 2022-12-07 Envisics Ltd Holographic light detection and ranging

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4289405A (en) * 1978-10-13 1981-09-15 Tobias Philip E Color monitoring system for use in creating colored displays
DE3265740D1 (en) * 1981-04-03 1985-10-03 Gretag Ag Method and device for the colorimetric analysis of a printed colour test scale
DE3220803C2 (de) * 1982-06-03 1994-03-10 Heidelberger Druckmasch Ag Farbdichtemeßanlage zur Ermittlung der Farbdichtewerte von Druckprodukten
ATE26674T1 (de) * 1983-01-29 1987-05-15 Roland Man Druckmasch Vorrichtung zum ermitteln und auswerten von farbmessfeldern auf einem druckbogen.
DE3324951A1 (de) * 1983-07-11 1985-01-24 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Vorrichtung zum ermitteln und auswerten von farbmessfeldern auf einem auf einem messtisch liegenden druckbogen mit einem densitometer
EP0149424B1 (de) * 1983-12-19 1990-11-14 GRETAG Aktiengesellschaft Verfahren, Vorrichtung und Farbmessstreifen für die Druckqualitätsbeurteilung
DE3631204C2 (de) * 1986-09-13 1993-11-25 Roland Man Druckmasch Vorrichtung an Druckmaschinen zur densitometrischen Erfassung eines Meßfeldstreifens

Also Published As

Publication number Publication date
ATE100760T1 (de) 1994-02-15
EP0316585A2 (de) 1989-05-24
ES2049237T3 (es) 1994-04-16
DE3887455D1 (de) 1994-03-10
EP0316585A3 (en) 1990-10-10
JPH01160644A (ja) 1989-06-23
BR8805521A (pt) 1989-07-04
DE3738850A1 (de) 1989-05-24
DE3738850C2 (enrdf_load_stackoverflow) 1991-05-29
US4963028A (en) 1990-10-16
JP2513812B2 (ja) 1996-07-03

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