EP0658428A1 - Système de commande d'imprimerie - Google Patents

Système de commande d'imprimerie Download PDF

Info

Publication number
EP0658428A1
EP0658428A1 EP93310110A EP93310110A EP0658428A1 EP 0658428 A1 EP0658428 A1 EP 0658428A1 EP 93310110 A EP93310110 A EP 93310110A EP 93310110 A EP93310110 A EP 93310110A EP 0658428 A1 EP0658428 A1 EP 0658428A1
Authority
EP
European Patent Office
Prior art keywords
ink
copy
press
space
elements
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
EP93310110A
Other languages
German (de)
English (en)
Other versions
EP0658428B1 (fr
Inventor
Xinxin Wang
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.)
Goss International LLC
Original Assignee
Rockwell International Corp
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 Rockwell International Corp filed Critical Rockwell International Corp
Priority to DE69326010T priority Critical patent/DE69326010T2/de
Priority to EP93310110A priority patent/EP0658428B1/fr
Priority to AT93310110T priority patent/ATE183137T1/de
Publication of EP0658428A1 publication Critical patent/EP0658428A1/fr
Application granted granted Critical
Publication of EP0658428B1 publication Critical patent/EP0658428B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • B41F33/0045—Devices for scanning or checking the printed matter for quality control for automatically regulating the ink supply

Definitions

  • the present invention relates to control systems for a printing press.
  • the press room color reproduction quality control system can be divided into the following two categories: one is a "control by target” system, and the other is a “control by image” system.
  • control by target In the "control by target” system, a set of color control targets is printed in a margin. Instruments, such as densitometers, are used to monitor the color attributes, such as the optical density, of these targets. The printing press is then adjusted based on the deviation of these control targets from a predefined attribute value.
  • the application of this "control by target” system is restricted in that an additional process is required to cut off this target from the final product. This system also requires a tight material control for paper, ink, and other printing parameters.
  • control by image In the "control by image” system, the print image on a live copy is compared with the printed image on a reference copy, called a proof. The press is then adjusted based on the difference between the live image and the reference image.
  • This system is more versatile because it does not require an additional target.
  • This system is also more accurate than the "control by target” system, because in some situations although the measured attributes of control targets on the live and reference images are the same, those two images still look different.
  • both the image comparing task and the press adjusting task are done by a press operator.
  • opto-electronic sensor devices such as a spectrophotometer, or CCD color cameras, to measure the color reproduction quality.
  • the bandwidth of these sensor devices is limited to the visible region of 400 nm through 700 nm in wavelength of the electro-magnetic spectrum.
  • these devices such as the spectrophotometer might be able to measure the printed color accurately, it is difficult to use the measured color information to achieve the automatic control for a four-color press without a target due to the involvement of the UCR and GCR techniques.
  • the printing press control system of the present invention comprises, means for detecting the energy reflected from a paper surface in both the visible region and the infrared region of the electromagnetic spectrum, means for converting the output of the detecting means to a set of variables which represent the amount of ink presented on the paper for any of the cyan, magenta, yellow and black inks, and means responsive to the converting means for adjusting the four-color printing press to maintain the color consistency.
  • the bandwidth of the infrared channel may be between 800 nm and 1100 nm, which is a portion of the near infrared region and which is compatible with a regular silicon detector.
  • the working wavelength of the infrared channel may be longer than 1100 nm or within the 700 - 800 nm transition region.
  • a further feature of the invention is that at least three distinct channels are utilized in the visible region. Three of these channels may correspond to red, green and blue (RGB), or cyan, magenta, and yellow (CMY), or other colors.
  • the bandwidth of each channel may be less than 70 nm, more than 100 nm, or any value in between, with channels having a multiple peak in its passing band, such as magenta, being also included.
  • the sensor device can be constructed from either a single element detector, a one-dimensional (linear) detector, a two-dimensional (area) detector, or other suitable detector structure.
  • the senor can be constructed by adding an additional infrared channel to existing devices, e.g., adding an infrared channel to a RGB color camera or a densitometer, or by extending the working band into the infrared region e.g., adding infrared capability to a spectrophotometer.
  • a further feature of the invention is that the light source used provides enough radiated energy in both the visible region and the infrared region, depending upon the sensor working band and sensitivity.
  • all possible values which are output from the sensor device may be used to form a vector space.
  • all possible values output from a sensor device with Red, Green, Blue, and Infrared channels form a four dimensional vector space R-G-B-IR, being termed a sensor space, with each output from the sensor device being termed a vector in the sensor space.
  • Another feature of the invention is that the minimum number of dimensions required by this sensor structure is four.
  • a set of variables can be defined to represent the amount of ink presented in a given area.
  • a set of variables C, M, Y, and K black
  • This set of variables may correspond to the ink volume, average ink film thickness, dot size, or other quantities related to the amount of ink in a given area on the paper surface, with the vector space by this set of variables being termed an ink space, with the ink space having formed a dimension of four for a four-color printing press.
  • Another feature of the invention is that there exists at least one transfer function which can map a vector in the four dimensional ink space into a vector in the four dimensional sensor space, with the transfer function being termed a forward transfer function.
  • the forward transfer function can be used in a soft proof system, which can electronically generate a proof image.
  • This electronically generated proof image can be stored in the system as a reference, or can be displayed on a CRT screen for visual inspection.
  • a further feature of the invention is that there exists at least one transfer function which can map a vector in the four dimensional sensor space into a vector in the four dimensional ink space, with the transfer function being termed a reverse transfer function.
  • the printed image on a live copy can be compared with the printed image on a reference copy in the sensor space. If the difference between the live copy and the reference copy is within a predefined tolerance level, at least for all channels in the visible region of the sensor space, the live copy is said to be acceptable by definition.
  • both the live image and the reference image in the sensor space can be mapped into the ink space by applying the reverse transfer function point by point.
  • the difference between the live image and the reference image in the ink space thus represents the difference of the ink distribution for each of the cyan, magenta, yellow, and black inks.
  • Another feature of the invention is that the difference between the live and the reference images in the ink space indicates which printing unit should be adjusted, which direction (up or down) it should be adjusted, and the amount of ink which should be adjusted.
  • a feature of the invention is that a press control Formula can be developed to adjust press parameters, such as ink input rate in lithographic or letterpresses, ink consistency in flexographic or gravure presses, water input rate in lithographic presses, or temperature in any of the above, based on the differences between the live and the reference image in the ink space.
  • a further feature of the invention is that the press adjustment can be achieved by an automatic control system, by the press operator alone, or by the interaction between the automatic control system and the press operator.
  • the sensor device may be used to monitor the printing web of the press directly, i.e., on press sensing, or to monitor the prints collected from the folder of the press, i.e., off press sensing.
  • a further feature of the invention is that if the digital images from the color separation processing, or the film/plate images are available, the image of the reference copy in the sensor space can be generated electronically by the forward transfer function.
  • Still another feature of ihe invention is that a closed loop automatic color reproduction control system may be formed with or without an additional color control target.
  • FIG. 1 there is shown a control system generally designated 10 for a printing press 11 of the present invention.
  • the control system 10 has a 4 channel sensor 21, a data converter 23 for processing information from the sensor 21, and a device 25 for controlling ink for the press 11.
  • the 4 channel sensor 21 detects the energy reflected from a paper surface, such as the paper web for the press 11, in both the visible region and the infrared region of the electromagnetic spectrum.
  • electromagnetic waves in the infrared region have a longer wave length than the visible spectrum, with the wave lengths of the electromagnetic waves in the region of visible light being approximately 400 to 700 nanometers (nm), and the wave lengths of the electromagnetic waves in the infrared region, including near infrared, being equal to or greater than 800 nm.
  • the control system 10 has a support 12 for placement of a sheet of paper 14 with image or indicia 16 on the sheet 14 in a configuration beneath a pair of opposed lights 18 and 20 for illuminating the sheet 14.
  • the system 10 has a first color video camera or sensor 22 having three channels for detecting attributes of the inks from the sheet 14 in the visible region of the electromagnetic spectrum, such as red, green, and blue, or cyan, magenta, and yellow, and for sending the sensed information over separate lines or leads 24, 26, and 28 to a suitable digital computer 30 or Central Processing Unit having a randomly addressable memory (RAM) and a read only memory (ROM), with the computer or CPU 30 having a suitable display 32.
  • RAM randomly addressable memory
  • ROM read only memory
  • the system 10 also has a black/white second video camera or sensor 34 having a filter 50 such that it senses the attributes of the inks in the infrared region of the electromagnetic spectrum, having a wave length greater than the wave length of the electromagnetic waves in the visible region of light.
  • the camera or sensor 34 thus senses infrared information from the sheet 14, and transmits the sensed information over a lead 36 to the computer 30, such that the information concerning the infrared rays is stored in and processed by the computer 30.
  • the normalized percentage of infrared (IR) reflection vs. the percentage of dot area is shown in the chart of FIG. 7. It will be seen that the infrared reflectance of cyan, magenta, and yellow inks show no significant change as a function of percentage of dot area. However, the normalized infrared reflectance of the black ink displays a significant change as a function of percentage of dot area, and changes from a normalized value of 100% IR reflection for 0% dot area to approximately 18% IR reflection corresponding to 100% dot area. Hence, the black ink may be easily sensed and distinguished from other color inks in the infrared region of the electromagnetic waves.
  • an "Ink Separation Process” 23 is used to convert the red, green, blue and IR images captured by the four channel sensor 21 into four separated cyan, magenta, yellow and black ink images, which represent the amount of corresponding ink presented on the live copy.
  • the "Ink Separation Process” 23 may utilize mathematic formulas, data look up tables or other suitable means to perform the data conversion task.
  • the similar processes are also applied to the reference copy.
  • the four channel sensor 21 is used to capture the red, green, blue and IR images from the reference copy.
  • the "Ink Separation Process" 23 is utilized to obtain the cyan, magenta, yellow and black ink images, which represent the amount of corresponding ink presented on the reference copy.
  • the ink images of the live copy are compared with the ink images of the reference copy by the computer 30 to detect the variation of ink distribution for each of the cyan, magenta, yellow and black inks.
  • the four channel sensor 21 is utilized to sense not only attributes in three channels of the visible region, the fourth channel of the sensor 21 senses an attribute in the infrared region in order to determine the correct amount of inks, including black ink, to correctly reproduce the proof.
  • the printing press control system 10 uses the four channel detector or sensor 21 to detect the energy reflected from a paper surface, such as the sheets 14 and 38, or the paper web of the press 11, with three channels being in the visible region and one channel being in the infrared region of the electromagnetic spectrum.
  • the control system 10 has a device 23 for converting the output of the sensing device 21 to a set of variables which represent the amount of ink presented on the paper for any of the cyan, magenta, yellow, and black inks, and a device 25 responsive to the converting device 23 for adjusting the four-color printing press 11 to maintain the color consistency.
  • the bandwidth of the infrared channel may be between 800 nm and 1100 nm, which is a portion of the near infrared region, and which is compatible with a regular silicon detector, although the working wavelength of the 15 infrared channel may be longer than 1100 ran.
  • At least three distinct channels are utilized in the visible region which may correspond to red, green, and blue (RGB), or cyan, magenta, and yellow (CMY), or other colors.
  • the bandwidth of each channel in the visible region may be less than 70 nm, more than 100 nm, or any value in between, with channels having a multiple peak in its passing band, such as magenta, being also included.
  • the sensor device 21 may be constructed from either a single element detector, a one-dimensional (linear) detector, a two-dimensional (area) detector, or other suitable detector structure, as will be seen below.
  • the sensor device may be constructed by adding an additional infrared channel to existing devices, adding an infrared channel to a RGB color camera or a densitometer, or by extending the working band into the infrared region, e.g., adding infrared capability to a spectrophotometer.
  • the light source 18 and 20 used provides sufficient radiated energy in both the visible region and the infrared region, depending upon the sensor working band and sensitivity.
  • All possible values which are output from the sensor device 21 may be used to form a vector space.
  • all possible values output from the sensor device 21 with red, green, blue and infrared channels form a four dimensional vector space R-G-B-IR, with the vector space being termed a sensor space S1, with each output from the sensor device 21 being termed a vector in the sensor space S1, with the minimum number of dimensions required by the sensor structure being 4.
  • a set S1 of elements e i1 and e i2 being given, with the elements e i1 of the set S1 being the vectors v i1 corresponding to the output from the sensor device 21 of sensing a live or current printed copy, and with the elements e i2 of the set S1 being the vectors v i2 corresponding to the output from the sensor device 21 sensing a reference printed copy.
  • the printed image on a live or current copy may be compared with the printed image on a reference copy in the sensor space, and if the difference between the live copy L.C. s and the reference copy R.C.
  • s is within a predefined tolerance level delta, at least for all the channels in the visible region of the sensor space, such that,
  • a set of variables may be defined to represent the amount of ink presented in a given area.
  • a set of variables, C, M, Y, and K can be defined to represent or be a function of the amount of cyan, magenta, yellow, and black ink in a given area.
  • This set of variables may correspond to the ink volume, average ink film thickness, dot size, or other quantities related to the amount of ink in a given area on the paper surface.
  • the vector space formed by this set of variables is termed an ink space S2, with the ink space S2 having a dimension of 4 for a four color printing press 11.
  • a set S2 of elements d i1 and d i2 are given, with the elements d i1 of the set S2 being the vectors v j1 corresponding to the variables associated with the live or current copy in the ink space S2, and with the elements d i2 of the set S2 being the vectors v j2 corresponding to the variables associated with the reference copy in the ink space S2.
  • FIG. 9 there exists at least one transfer function or transformation phi which can map the elements d i1 and d i2 of the set S2, or the four dimensional ink space, into the elements e i1 and e i2 of the set S1 or the four dimensional sensor space, with the transformation phi being termed a forward transfer function, as shown in FIGS. 9 and 10. It is noted that the subsets in each set S1 and S2 may overlap or may be the same.
  • the forward transfer function may be used in a soft proof system which can generate a proof image which can be stored in the system as a reference or can be displayed on a CRT screen.
  • both the live image and the reference image in the sensor space or set S1 can be mapped into the ink space or set S2 by applying the reverse transfer function phi ⁇ 1 point by point as shown in FIGS. 9 and 10.
  • the difference between the live image and the reference image in the ink space S2 thus represents the difference of the ink distribution for each of the cyan, magenta, yellow, and black inks, as shown in FIG. 11.
  • the difference between the live and reference images in the ink space S2 indicates which printing unit should be adjusted, which direction, up or down, it should be adjusted, and the amount of ink which should be adjusted.
  • a suitable press control formula may be developed to adjust press parameters, such as ink input rate in lithographic or letterpresses, ink consistency in flexographic or gravure presses, water input rate in lithographic presses, or temperature in any of the above, based on the differences between the live and the reference image in the ink space S2.
  • the press adjustments can be achieved by the automatic control system 10, by press operator alone, or by the interaction between the automatic control system 10 and the press operator.
  • the sensor device 21 may be used to monitor the printing web of the press 11 directly, i.e., on press sensing, or to monitor the prints collected from the folder of the press, i.e., off press sensing. If the digital images from the color separation processing, or the film/plate images are available, the image of the reference copy in the sensor device 21 can be generated electronically by the forward transfer function phi. The electronically generated reference may be used to set up the press 11 in order to reduce the makeready time.
  • the color reproduction quality can be maintained through the entire press run, through different press runs on different presses, or at different times.
  • a closed loop automatic color reproduction control system may be formed without an additional color control target.
  • the variation of ink, paper, and other press parameters can be compensated such that the printed copies have the highest possible overall results in matching the reference copy.
  • the camera or sensor 22 may be associated with a rotating filter member 52 having filters which only transmit the desired colors F1, F2, and F3, such as red, green, and blue during rotation, such that the camera or sensor 22 senses and records the colors F1, F2, and F3 sequentially or separately from the printed material which may be taken either from the current press run or from the reference press run.
  • the filter member 52 may have an infrared (IR) filter F4 in order to sense and record the energy reflected from the printed material in the infrared region.
  • IR infrared
  • the camera or sensor 22 may comprise a charge coupled device (CCD) with built in filters which converts light energy reflected from the printed material into electric energy in a video camera, i.e. F1, F2, F3, and F4 (IR), such as the distinct colors red, green, and blue in the visible region, and the near infrared energy in the infrared region, in order to supply the information to the computer 30 for storage and processing, as previously discussed.
  • CCD charge coupled device
  • IR near infrared energy in the infrared region
  • FIG. 6 Another embodiment of the camera or sensor 22 of the present invention is illustrated in FIG. 6, in which like reference numerals designate like parts.
  • the camera or sensor 22 has a beam splitter in order to separate the incoming light reflected from the printed material into an infrared beam for a first CCD 1, F1 such as red for a second CCD 2, F2 such as green for a third CCD 3, and F3 such as blue for a fourth CCD.
  • suitable prisms, lenses, or mirrors may be utilized to accomplish the beam splitting of light in order to obtain the desired color attributes in the various charge coupled devices to supply the information to the computer 30 for storage and processing in the computer 30, in a manner as previously described.
  • any other suitable camera or sensing device may be utilized to obtain the desired colors.
  • a control system 10 for a printing press 11 which ascertains three distinct attributes, such as colors, in the visible region of electromagnetic waves and an attribute in the infrared region of the electromagnetic spectrum for the printed inks.
  • the control system 10 utilizes these four attributes in a four channel device to indicate and control the ink colors for use in the press 11.
  • the colors may be sensed from a sheet taken during a current press run, and from a sheet taken during a reference press run, after which the sensed information is utilized in order to modify ink settings of a press 11 in order to obtain repeatability of the same colors from the reference run to the current press run.
  • a consistent quality of colors may be maintained by the printing press 11 irrespective of the number of runs after the reference run has been made, and may be continuously used during a press run if desired.

Landscapes

  • Engineering & Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Dot-Matrix Printers And Others (AREA)
  • Control Of Eletrric Generators (AREA)
  • Selective Calling Equipment (AREA)
EP93310110A 1993-12-15 1993-12-15 Système de commande d'imprimerie Expired - Lifetime EP0658428B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE69326010T DE69326010T2 (de) 1993-12-15 1993-12-15 Druckereisteuerungssystem
EP93310110A EP0658428B1 (fr) 1993-12-15 1993-12-15 Système de commande d'imprimerie
AT93310110T ATE183137T1 (de) 1993-12-15 1993-12-15 Druckereisteuerungssystem

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP93310110A EP0658428B1 (fr) 1993-12-15 1993-12-15 Système de commande d'imprimerie

Publications (2)

Publication Number Publication Date
EP0658428A1 true EP0658428A1 (fr) 1995-06-21
EP0658428B1 EP0658428B1 (fr) 1999-08-11

Family

ID=8214639

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93310110A Expired - Lifetime EP0658428B1 (fr) 1993-12-15 1993-12-15 Système de commande d'imprimerie

Country Status (3)

Country Link
EP (1) EP0658428B1 (fr)
AT (1) ATE183137T1 (fr)
DE (1) DE69326010T2 (fr)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0767059A2 (fr) * 1995-10-05 1997-04-09 Goss Graphic Systems, Inc. Dispositif de sélection des encres dans la commande de l'alimentation d'encre d'une machine d'impression
EP0795400A1 (fr) * 1996-03-12 1997-09-17 Goss Graphic Systems, Inc. Dispositif pour aligner automatiquement une image d'une copie de production avec une image d'une copie de référence dans un système de contrÔle d'une machine d'impression
WO1998043814A2 (fr) * 1997-04-03 1998-10-08 Intex Israel Technologies Corp. Ltd. Systeme de maitrise des couleurs sur presse
US6252220B1 (en) 1999-04-26 2001-06-26 Xerox Corporation Sensor cover glass with infrared filter
US6316284B1 (en) 2000-09-07 2001-11-13 Xerox Corporation Infrared correction in color scanners
US6422142B2 (en) 1998-01-27 2002-07-23 Man Roland Druckmaschinen Ag Ink regulation device for a painting machine
EP1323530A2 (fr) 2001-12-27 2003-07-02 Mitsubishi Heavy Industries, Ltd. Procédé de réglage de teinte pour une presse d'impression
US6768565B1 (en) 2000-09-07 2004-07-27 Xerox Corporation Infrared correction in color scanners
EP1629978A3 (fr) * 2004-08-31 2009-05-27 Mitsubishi Heavy Industries, Ltd. Procédé et appareil de contrôle de la teint de couleurs d'images
DE102008049908A1 (de) * 2008-10-02 2010-04-08 Robert Bosch Gmbh Verfahren zur Erzeugung eines Detektionssignals und Erfassungseinrichtung
DE102012106981A1 (de) * 2012-07-31 2014-02-06 Eltromat Gmbh Verfahren zur Prüfung des Druckergebnisses bei Rotationsdruckmaschinen

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH649842A5 (en) * 1980-02-27 1985-06-14 Roland Man Druckmasch Method for determining individual colour components in a multicolour print by means of a densitometer
DE3533549A1 (de) * 1984-10-04 1986-04-10 VEB Kombinat Polygraph "Werner Lamberz" Leipzig, DDR 7050 Leipzig Verfahren zur farbmetrischen auswertung von druckprodukten
EP0408507A1 (fr) * 1989-07-14 1991-01-16 GRETAG Aktiengesellschaft Méthode de détermination des écarts de couleur entre deux surfaces tramÀ©es imprimées avec une machine d'impression ainsi que méthode de commande ou réglage de l'impression couleurs d'une machine à imprimer
DE4023320A1 (de) * 1990-07-21 1992-01-23 Polygraph Contacta Gmbh Verfahren zur erfassung und steuerung der qualitaet von druckerzeugnissen
US5224421A (en) * 1992-04-28 1993-07-06 Heidelberg Harris, Inc. Method for color adjustment and control in a printing press

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH649842A5 (en) * 1980-02-27 1985-06-14 Roland Man Druckmasch Method for determining individual colour components in a multicolour print by means of a densitometer
DE3533549A1 (de) * 1984-10-04 1986-04-10 VEB Kombinat Polygraph "Werner Lamberz" Leipzig, DDR 7050 Leipzig Verfahren zur farbmetrischen auswertung von druckprodukten
EP0408507A1 (fr) * 1989-07-14 1991-01-16 GRETAG Aktiengesellschaft Méthode de détermination des écarts de couleur entre deux surfaces tramÀ©es imprimées avec une machine d'impression ainsi que méthode de commande ou réglage de l'impression couleurs d'une machine à imprimer
DE4023320A1 (de) * 1990-07-21 1992-01-23 Polygraph Contacta Gmbh Verfahren zur erfassung und steuerung der qualitaet von druckerzeugnissen
US5224421A (en) * 1992-04-28 1993-07-06 Heidelberg Harris, Inc. Method for color adjustment and control in a printing press

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1369233A3 (fr) * 1995-10-05 2004-01-28 Goss Graphic Systems, Inc. Dispositif de sélection des encres dans la commande de l'alimentation d'encre d'une machine d'impression
EP0767059A3 (fr) * 1995-10-05 1999-03-31 Goss Graphic Systems, Inc. Dispositif de sélection des encres dans la commande de l'alimentation d'encre d'une machine d'impression
EP0767059A2 (fr) * 1995-10-05 1997-04-09 Goss Graphic Systems, Inc. Dispositif de sélection des encres dans la commande de l'alimentation d'encre d'une machine d'impression
EP0795400A1 (fr) * 1996-03-12 1997-09-17 Goss Graphic Systems, Inc. Dispositif pour aligner automatiquement une image d'une copie de production avec une image d'une copie de référence dans un système de contrÔle d'une machine d'impression
WO1998043814A2 (fr) * 1997-04-03 1998-10-08 Intex Israel Technologies Corp. Ltd. Systeme de maitrise des couleurs sur presse
WO1998043814A3 (fr) * 1997-04-03 1999-04-01 Intex Israel Tech Corp Ltd Systeme de maitrise des couleurs sur presse
GB2338451A (en) * 1997-04-03 1999-12-22 Intex Israel Tech Corp Ltd On press color control system
US6024018A (en) * 1997-04-03 2000-02-15 Intex Israel Technologies Corp., Ltd On press color control system
US6422142B2 (en) 1998-01-27 2002-07-23 Man Roland Druckmaschinen Ag Ink regulation device for a painting machine
DE19802920B4 (de) * 1998-01-27 2008-01-31 Man Roland Druckmaschinen Ag Verfahren und Vorrichtung zur Farbregelung in Druckmaschinen
US6252220B1 (en) 1999-04-26 2001-06-26 Xerox Corporation Sensor cover glass with infrared filter
US6316284B1 (en) 2000-09-07 2001-11-13 Xerox Corporation Infrared correction in color scanners
US6768565B1 (en) 2000-09-07 2004-07-27 Xerox Corporation Infrared correction in color scanners
EP1323530A3 (fr) * 2001-12-27 2008-01-09 Mitsubishi Heavy Industries, Ltd. Procédé de réglage de teinte pour une presse d'impression
EP1323530A2 (fr) 2001-12-27 2003-07-02 Mitsubishi Heavy Industries, Ltd. Procédé de réglage de teinte pour une presse d'impression
EP1629978A3 (fr) * 2004-08-31 2009-05-27 Mitsubishi Heavy Industries, Ltd. Procédé et appareil de contrôle de la teint de couleurs d'images
DE102008049908A1 (de) * 2008-10-02 2010-04-08 Robert Bosch Gmbh Verfahren zur Erzeugung eines Detektionssignals und Erfassungseinrichtung
DE102012106981A1 (de) * 2012-07-31 2014-02-06 Eltromat Gmbh Verfahren zur Prüfung des Druckergebnisses bei Rotationsdruckmaschinen

Also Published As

Publication number Publication date
DE69326010T2 (de) 1999-11-25
DE69326010D1 (de) 1999-09-16
ATE183137T1 (de) 1999-08-15
EP0658428B1 (fr) 1999-08-11

Similar Documents

Publication Publication Date Title
EP1712361B1 (fr) Dispositif de sélection des encres dans la commande de l'alimentation d'encre d'une machine d'impression
US5841955A (en) Control system for a printing press
US5812705A (en) Device for automatically aligning a production copy image with a reference copy image in a printing press control system
US5767980A (en) Video based color sensing device for a printing press control system
US5816151A (en) Device for alignment of images in a control system for a printing press
US5530656A (en) Method for controlling the ink feed of a printing machine for half-tone printing
EP0648042B1 (fr) Système de reproduction en couleurs
US5805280A (en) Control system for a printing press
EP1149703B1 (fr) Procédé et dispositif de gestion de colours et appareils de traitement de données d'images de figure
EP0653879B1 (fr) Procédé et système de prédiction d'une image de reproduction en couleurs
EP0282305A2 (fr) Procédé de conversion de tonalités pour images
JPH0522580B2 (fr)
AU2001278064A1 (en) Spectral color control method
EP1345772A1 (fr) Procede de maitrise de la couleur spectrale
EP0860277B1 (fr) Système et procédé de contrôle du repérage sur place pendant le réglage et l'impression
EP0658428B1 (fr) Système de commande d'imprimerie
US6802254B2 (en) Method and apparatus for controlling color of a printing press based upon colorimetric density differences
EP0703700B1 (fr) Procédé et appareil de prédiction d'une image
EP0795400A1 (fr) Dispositif pour aligner automatiquement une image d'une copie de production avec une image d'une copie de référence dans un système de contrÔle d'une machine d'impression
JPH07205410A (ja) 印刷機用の制御システム
JP2787216B2 (ja) インクジエットプリンタ
JPH09254456A (ja) 印刷機制御システム用の画像整合装置
JP2003103761A (ja) 印刷色調監視システム

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB IT LI LU NL SE

17P Request for examination filed

Effective date: 19951102

17Q First examination report despatched

Effective date: 19961126

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: GOSS GRAPHIC SYSTEMS, INC.

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE DK ES FR GB IT LI LU NL SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19990811

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19990811

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRE;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.SCRIBED TIME-LIMIT

Effective date: 19990811

Ref country code: ES

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19990811

Ref country code: BE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19990811

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19990811

REF Corresponds to:

Ref document number: 183137

Country of ref document: AT

Date of ref document: 19990815

Kind code of ref document: T

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: TROESCH SCHEIDEGGER WERNER AG

Ref country code: CH

Ref legal event code: EP

ET Fr: translation filed
REF Corresponds to:

Ref document number: 69326010

Country of ref document: DE

Date of ref document: 19990916

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19991111

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19991215

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

REG Reference to a national code

Ref country code: GB

Ref legal event code: 732E

Free format text: REGISTERED BETWEEN 20091022 AND 20091028

REG Reference to a national code

Ref country code: GB

Ref legal event code: 732E

Free format text: REGISTERED BETWEEN 20091029 AND 20091104

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20091228

Year of fee payment: 17

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20091229

Year of fee payment: 17

Ref country code: FR

Payment date: 20100106

Year of fee payment: 17

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20091230

Year of fee payment: 17

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20101215

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20110831

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20101231

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20101231

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110103

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 69326010

Country of ref document: DE

Effective date: 20110701

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20101215

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110701