EP1958775A3 - Colour decomposition correction procedure - Google Patents

Colour decomposition correction procedure Download PDF

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Publication number
EP1958775A3
EP1958775A3 EP08100676A EP08100676A EP1958775A3 EP 1958775 A3 EP1958775 A3 EP 1958775A3 EP 08100676 A EP08100676 A EP 08100676A EP 08100676 A EP08100676 A EP 08100676A EP 1958775 A3 EP1958775 A3 EP 1958775A3
Authority
EP
European Patent Office
Prior art keywords
color
sampling points
measured values
identified
correction procedure
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
EP08100676A
Other languages
German (de)
French (fr)
Other versions
EP1958775A2 (en
EP1958775B1 (en
Inventor
Adrian Dr.Kohlbrenner
Peter Dr. Ehbets
Wolfgang Geissler
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.)
X Rite Switzerland GmbH
Heidelberger Druckmaschinen AG
Original Assignee
X Rite Europe GmbH
Heidelberger 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 X Rite Europe GmbH, Heidelberger Druckmaschinen AG filed Critical X Rite Europe GmbH
Publication of EP1958775A2 publication Critical patent/EP1958775A2/en
Publication of EP1958775A3 publication Critical patent/EP1958775A3/en
Application granted granted Critical
Publication of EP1958775B1 publication Critical patent/EP1958775B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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

Abstract

Bei einem Verfahren zur Korrektur des durch farbspaltungsbedingte Oberflächeneffekte verursachten Messfehlers bei der farblichen Ausmessung eines Druckbogens an einer laufenden Druckeinrichtung wird der Druckbogen punktweise fatoelektrisch abgetastet und aus den Abtastsignalen (1) der Abtastpunkte werden Farb- und/oder Dichtemesswerte (3) gebildet. Diejenigen Abtastpunkte werden identifiziert, welche eine einen Grenzwert (IG) übersteigende Helligkeit aufweisen, und die Messwerte werden anhand der identifizierten Abtastpunkte korrigiert. Im Besonderen werden dabei die Abtastsignale der identifizierten Abtastpunkte bei der Bildung der Farb- und/oder Dichtemesswerte nicht berücksichtigt.

Figure imgaf001
In a method for correcting the measurement error caused by color-splitting-related surface effects in the color measurement of a printing sheet on a running printing device, the printed sheet is fatoelectrically scanned dot-by-dot and color and / or density measured values (3) are formed from the scanning signals (1) of the sampling points. Those sampling points are identified which have a brightness exceeding a limit value (I G ), and the measured values are corrected on the basis of the identified sampling points. In particular, the scanning signals of the identified sampling points are not taken into account in the formation of the color and / or density measured values.
Figure imgaf001
EP08100676.9A 2007-02-15 2008-01-21 Ink splitting correction method Active EP1958775B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102007008017A DE102007008017A1 (en) 2007-02-15 2007-02-15 Color separation correction methods

Publications (3)

Publication Number Publication Date
EP1958775A2 EP1958775A2 (en) 2008-08-20
EP1958775A3 true EP1958775A3 (en) 2010-04-14
EP1958775B1 EP1958775B1 (en) 2014-08-06

Family

ID=39402664

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08100676.9A Active EP1958775B1 (en) 2007-02-15 2008-01-21 Ink splitting correction method

Country Status (5)

Country Link
US (1) US7894065B2 (en)
EP (1) EP1958775B1 (en)
JP (1) JP5497988B2 (en)
CN (1) CN101244648B (en)
DE (1) DE102007008017A1 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101844438B (en) * 2009-03-25 2014-06-11 海德堡印刷机械股份公司 Mail operating device and method for controlling transmission of mail information
DE102010015034B4 (en) * 2009-04-30 2016-01-14 Heidelberger Druckmaschinen Ag Hybrid inline color control for printing presses
DE102010017866A1 (en) * 2009-05-07 2010-11-25 Heidelberger Druckmaschinen Ag Method for controlling an inking unit of a printing machine
DE102010051952B4 (en) * 2009-12-11 2022-01-20 Heidelberger Druckmaschinen Ag Analysis of color separations
CN102416760B (en) * 2010-09-24 2016-08-03 海德堡印刷机械股份公司 To version measuring cell
DE102012004482A1 (en) 2011-03-24 2012-09-27 Heidelberger Druckmaschinen Aktiengesellschaft Method for controlling color at zonal inking unit in printing machine, involves measuring color values in image region similar to reference values for controlling color at zonal inking unit in printing machine by control computer
DE102012012517A1 (en) 2011-07-15 2013-01-17 Heidelberger Druckmaschinen Aktiengesellschaft Dampening control in a printing machine
CN102909950B (en) 2011-08-03 2015-12-09 海德堡印刷机械股份公司 The control of the inking device when print speed printing speed changes
DE102012016832A1 (en) 2011-09-22 2013-03-28 Heidelberger Druckmaschinen Ag Method for controlling ink metering in inking unit of printing machine, involves detecting ink film thickness on inking rollers in inking unit by sensor, where roller is provided to plate cylinder in printing element of printing machine
DE102012020911A1 (en) 2011-11-11 2013-05-16 Heidelberger Druckmaschinen Ag Dyeing monitor for printing machines

Citations (2)

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Publication number Priority date Publication date Assignee Title
WO2005108083A1 (en) * 2004-05-03 2005-11-17 Heidelberger Druckmaschinen Ag Method for determining colour values and/or density values, and printing device for implementing said method
DE102006027067A1 (en) * 2005-06-21 2006-12-28 Arc Seibersdorf Research Gmbh Articles testing method e.g. for detecting printing errors on articles such as banknotes, stamps, documents, involves providing digital pictures of articles and evaluated by comparison with target pictures

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Publication number Priority date Publication date Assignee Title
DE3265740D1 (en) * 1981-04-03 1985-10-03 Gretag Ag Method and device for the colorimetric analysis of a printed colour test scale
JPS6122949A (en) * 1984-07-12 1986-01-31 Shinohara Tekkosho:Kk Inking roller device for offset press
US5182721A (en) * 1985-12-10 1993-01-26 Heidelberger Druckmaschinen Aktiengesellschaft Process and apparatus for controlling the inking process in a printing machine
DE3709858A1 (en) * 1986-04-18 1987-10-22 Heidelberger Druckmasch Ag DETERMINING THE MULTI-COLOR PRINT REGISTER ERROR
DE3830732C2 (en) * 1988-09-09 2000-05-25 Heidelberger Druckmasch Ag Process for dampening solution control in an offset printing machine
JPH04203955A (en) * 1990-11-29 1992-07-24 Narumi China Corp Inspection method of printing pattern
US6081608A (en) * 1995-02-09 2000-06-27 Mitsubishi Jukogyo Kabushiki Kaisha Printing quality examining method
US5724259A (en) * 1995-05-04 1998-03-03 Quad/Tech, Inc. System and method for monitoring color in a printing press
DE19749064A1 (en) * 1997-11-06 1999-05-12 Heidelberger Druckmasch Ag Method for determining color value gradients
US6796240B2 (en) * 2001-06-04 2004-09-28 Quad/Tech, Inc. Printing press register control using colorpatch targets
DE10257981A1 (en) * 2002-01-15 2003-07-24 Heidelberger Druckmasch Ag Color control of printing machine with spectral based color measurement used to determine actual vale of spectral reflectance
US7636163B2 (en) * 2007-07-23 2009-12-22 X-Rite, Inc. Color measurement device with error detection

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005108083A1 (en) * 2004-05-03 2005-11-17 Heidelberger Druckmaschinen Ag Method for determining colour values and/or density values, and printing device for implementing said method
DE102006027067A1 (en) * 2005-06-21 2006-12-28 Arc Seibersdorf Research Gmbh Articles testing method e.g. for detecting printing errors on articles such as banknotes, stamps, documents, involves providing digital pictures of articles and evaluated by comparison with target pictures

Also Published As

Publication number Publication date
US20080201110A1 (en) 2008-08-21
JP2008195073A (en) 2008-08-28
DE102007008017A1 (en) 2008-08-21
US7894065B2 (en) 2011-02-22
EP1958775A2 (en) 2008-08-20
JP5497988B2 (en) 2014-05-21
CN101244648B (en) 2011-03-16
CN101244648A (en) 2008-08-20
EP1958775B1 (en) 2014-08-06

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