EP1445662A1 - Méthode pour corriger la calibration d'un procédé d'impression en registre - Google Patents

Méthode pour corriger la calibration d'un procédé d'impression en registre Download PDF

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Publication number
EP1445662A1
EP1445662A1 EP03020915A EP03020915A EP1445662A1 EP 1445662 A1 EP1445662 A1 EP 1445662A1 EP 03020915 A EP03020915 A EP 03020915A EP 03020915 A EP03020915 A EP 03020915A EP 1445662 A1 EP1445662 A1 EP 1445662A1
Authority
EP
European Patent Office
Prior art keywords
toner
conveyor belt
register
register marks
registration
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
EP03020915A
Other languages
German (de)
English (en)
Other versions
EP1445662B1 (fr
Inventor
Jan Dirk Dr. Boness
Heiko Hunold
Stefan Schrader
Ingo Klaus Michael Dreher
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.)
Eastman Kodak Co
Original Assignee
Eastman Kodak Co
NexPress Solutions LLC
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 Eastman Kodak Co, NexPress Solutions LLC filed Critical Eastman Kodak Co
Publication of EP1445662A1 publication Critical patent/EP1445662A1/fr
Application granted granted Critical
Publication of EP1445662B1 publication Critical patent/EP1445662B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03GELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00Apparatus for electrographic processes using a charge pattern
    • G03G15/01Apparatus for electrographic processes using a charge pattern for producing multicoloured copies
    • G03G15/0105Details of unit
    • G03G15/0131Details of unit for transferring a pattern to a second base
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03GELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2215/00Apparatus for electrophotographic processes
    • G03G2215/01Apparatus for electrophotographic processes for producing multicoloured copies
    • G03G2215/0151Apparatus for electrophotographic processes for producing multicoloured copies characterised by the technical problem
    • G03G2215/0158Colour registration
    • G03G2215/0161Generation of registration marks

Definitions

  • the invention relates to a method for correcting the calibration of the registration and / or register accurate printing process of an electrophotographic working Printing machine, preferably a color printing machine.
  • registration error ie Errors in the precise overprint of the color separations in color printing
  • register errors ie errors in the precise placement of a printed image on a printed sheet
  • register can in particular in the circumferential register thereby in the color or monochrome Pressure
  • the printing material-related register errors ie errors that affect the register the color separations of a color print relative to each other and each individually Affect the substrate, in particular the so-called gear register error, the so-called creep register error and the so-called printing material-related magnification registration error that does not coincide with one due to concentricity error conditional periodic magnification error is to be confused, from each other be differentiated.
  • the gear-registration error can be caused by the fact that a substrate through the narrow gap (nip) between the conveyor belt and one thereby running driven, the print image on the substrate applying pressure member or transfer member (eg a blanket cylinder) whose speed itself (such as in a transmission by changing the gear ratio) changed, forced.
  • pressure member or transfer member eg a blanket cylinder
  • the creep registration error can be caused by the fact that in a deflection area or any other curved path of the conveyor belt Surface of the (so to speak, on crooked ways creeping) printing substrate on a different radius to the deflection or curvature axis than the surface of the conveyor belt and therefore another web speed having.
  • the printed matter-related magnification registration error can be caused by this be that a substrate through the narrow gap (nip) between the conveyor belt and a print image on the substrate applying pressure member or transfer element whose shape thereby changes in the pressure range, is forced, resulting in a spread or enlargement of the printed image in Can run direction of the substrate.
  • the object of the invention is to provide a method of the type mentioned improve, and it has been inventively recognized that such a toner field can lead to registration errors.
  • toner field is thus according to the invention in or through a Calibration is taken into account with advantage, and although the toner field is preferred as a substrate sheet from a special substrate treated. Errors occur through the toner field, probably by changing the frictional engagement between the conveyor belt and thereby driven along, the Print image on the substrate applying pressure member or transfer element on, since in place of the conveyor belt sections, the toner field with its other coefficient of friction occurs. So can a change frictional engagement or delivery due to the passing toner field between several moving intermediate carriers, for example between Photoconductor and blanket cylinder, lead to such errors. Priority may be This can lead to a gear-Passerhou, possibly even to a magnolia-registration error.
  • the at least one correction parameter is similar as a correction value for the influence of a particular printing material in one Correction table is filed for a registration of Substrate sheets for the printing process is accessible.
  • a development of the invention provides that for the determination of the influence a toner field and for determining the at least one correction parameter for a calibration run at least one such toner field on the conveyor belt is applied and at least one register mark in front of the toner field and at least one register mark behind the toner field on the conveyor belt is applied, wherein each of said register marks marks comprises colors intended for the color printing process, and these register marks be detected measuring.
  • Color is very broad in this context. It can handle it the usual colors of four-color printing, cyan, magenta, yellow and black meant, but also other or additional spot colors, colorless toners, Paints or the like, with a Bercisungsstation the printed image after Type of a color separation could be added.
  • the invention provides that instead of at least one said single register marks a plurality of register marks to is used, on the measurement results or the measurement results of their each of the same color markers to average.
  • a plurality of spaced-apart Toner fields along the transport direction one behind the other on the conveyor belt is applied and that in each case in the space between two successive Toner fields at least one register mark on the conveyor belt is applied, preferably using the measurement results in intervals between the toner fields located register marks or whose identically colored markings are averaged.
  • a so-called gear-Passer error caused thereby is that a toner field through the narrow gap (nip) between the conveyor belt and thereby one driven along, the printed image on the Substrate applying pressure element or transfer element, or between a transfer organ and a Bereciungsorgan whose speed is thereby changed, forced and / or that a so-called corrected magnification registration error caused by that a toner field through the narrow gap (nip) between the conveyor belt and a printing device or transfer element applying the printed image to the printing material, or between an imaging member and a transfer member, whose shape changes in the pressure range, forced becomes.
  • a development of the method according to the invention provides that of the existing plurality of toner fields and / or in between spaces register marks applied to the toner fields, only a selected one, predetermined number is used.
  • a plurality of register marks are preferably consecutive before the totality of the toner fields and / or behind the whole of the Toner fields applied to the conveyor belt, but in particular straight The register marks behind the toner fields could also be omitted.
  • the plurality of register marks in front of and / or behind the toner fields is likely each about the order of 20 to 60 register marks are, where prefers the same number of register marks in front of and behind the toner fields is used.
  • toner fields is in a particular embodiment of a electrophotographic printing machine, by way of example only, at about 18 toner fields.
  • the number and scheme of the register marks is not exactly defined, but can change according to need and circumstances, as well as the calibration sequence.
  • Shown in the drawing figure is an example of a register mark scheme according to the invention, the to scale reasons by dash-dotted lines Lines broken and only partially shown in three sections.
  • three toner fields 1 indicated that on a conveyor belt, not shown are applied and transported by this in the direction of an arrow 6.
  • On each of the toner fields 1 itself could also register mark-like Markings be provided.
  • register marks 3 applied to the conveyor belt.
  • symbolize the three drawn toner fields 1 preferably eighteen Toner fields, which are applied one after the other on the conveyor belt.
  • register marks. 4 applied to the conveyor belt, of which, however, in the drawing only four register marks 4 are shown for reasons of space.
  • register marks 5 are applied to the conveyor belt, of which in turn only four Register marks 5 are shown.
  • Register marks 5 completely eliminated or it could be a different number of register marks 4, 5 be provided as twenty.
  • the gear parameter for a toner surface is calculated for the given color as follows from the measured register mark data RegData (even if the toner surface is only printed in black, for example, all colors are affected in their registration!):
  • the gear parameter is calculated as follows:
  • the square brackets ⁇ > indicate an averaging over the sequence called the index, in these cases via the register marks 3 ( EffBatch ) used for the measurement of the gear parameter, as well as the register marks 4 of the so-called preprint calibration ( PrePrintCal ) and Register marks 5 of the so-called postprint calibration ( PostPrintCal ), if the register marks 5 are not a priori, as described above.
  • the size EffBatch accounts for the fact that not all, for example, 18 marks of a sequence of toner fields are used for the calculation, but only 11 values, for example, as in the large-ply calibration for large bends (A3, A3 +, tabloid etc.) Case is. This corresponds to a full occupancy of the conveyor belt with large toner areas, so that residual errors that are based on the specific position of the sheet on the conveyor belt, be averaged out.
  • the color variable can assume the values cyan, magenta, yellow, black of a normal four-color printing in the printing press or additionally or alternatively also additional colors, including possibly colorless toner, or lacquer.
  • the index patch indicates that it is data derived from marks printed on the conveyor belt.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Control Or Security For Electrophotography (AREA)
  • Color Electrophotography (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Photosensitive Polymer And Photoresist Processing (AREA)
  • Character Spaces And Line Spaces In Printers (AREA)
  • Controlling Sheets Or Webs (AREA)
EP03020915A 2003-02-05 2003-09-16 Méthode pour corriger la calibration d'un procédé d'impression en registre Expired - Lifetime EP1445662B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10304763 2003-02-05
DE10304763A DE10304763A1 (de) 2003-02-05 2003-02-05 Verfahren zur Korrektur der Kalibrierung eines passergenauen Druckprozesses

Publications (2)

Publication Number Publication Date
EP1445662A1 true EP1445662A1 (fr) 2004-08-11
EP1445662B1 EP1445662B1 (fr) 2008-12-31

Family

ID=32603168

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03020915A Expired - Lifetime EP1445662B1 (fr) 2003-02-05 2003-09-16 Méthode pour corriger la calibration d'un procédé d'impression en registre

Country Status (4)

Country Link
US (1) US7035557B2 (fr)
EP (1) EP1445662B1 (fr)
AT (1) ATE419563T1 (fr)
DE (2) DE10304763A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006040528B4 (de) * 2006-08-30 2012-01-26 Eastman Kodak Co. Verfahren zur Durchführung von in Gruppen aufgeteilten Druckaufträgen mit einer digitalen, mit Toner arbeitenden Druckmaschine
DE102007041393B4 (de) * 2007-08-31 2010-12-16 Eastman Kodak Co. Verfahren zum Kalibrieren einer Mehrfarben-Druckmaschine
JP5370838B2 (ja) * 2008-08-13 2013-12-18 株式会社リコー 画像形成装置
US8924002B2 (en) 2011-04-22 2014-12-30 I-Cut, Inc. Adaptive registration during precision graphics cutting from multiple sheets
US20150116734A1 (en) * 2013-10-24 2015-04-30 Joshua Hart Howard Printer with image plane alignment correction
US11822262B2 (en) 2021-09-28 2023-11-21 Eastman Kodak Company Registration of white toner using sensing system with colored reflector plate
US11829084B2 (en) 2021-09-28 2023-11-28 Eastman Kodak Company Registration of white toner in an electrophotographic printer

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63271275A (ja) * 1987-04-28 1988-11-09 Canon Inc 画像形成装置
US5550625A (en) * 1992-09-28 1996-08-27 Fuji Xerox Co., Ltd. Color image forming apparatus providing registration control for individual color images
US6198897B1 (en) * 1999-09-17 2001-03-06 Lexmark International, Inc. Method and apparatus for correcting transfer belt position via stored parameters
DE10141035A1 (de) 2001-08-22 2003-03-20 Nexpress Solutions Llc Verfahren und Druckmaschine zum Ermitteln von Registerfehlern

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1156382B1 (fr) * 2000-05-17 2008-05-07 Eastman Kodak Company Méthode et appareil pour l'ajustement de registre dans une imprimante couleur
EP1156384B1 (fr) * 2000-05-17 2008-04-16 Eastman Kodak Company Méthode et dispositif d'ajustement de la régistration dans une imprimante couleur et imprimante couleur
US6529697B1 (en) * 2000-08-30 2003-03-04 Hewlett-Packard Company Methods and apparatus for calibrating inline color laser printers
DE10139310B4 (de) * 2001-08-09 2010-11-25 Eastman Kodak Co. Verfahren zum Ermitteln von START OF FRAME-Korrekturdaten und START OF LINE-Korrekturdaten zur Registereinstellung für Druckmaschinen beim Mehrfarbdruck
DE10141034A1 (de) * 2001-08-22 2003-03-20 Nexpress Solutions Llc Verfahren und Druckmaschine zum Ermitteln von Registerfehlern
DE10208597B4 (de) * 2002-02-27 2013-03-21 Eastman Kodak Co. Verfahren zum Vermeiden von Registerfehlern bei einer Druckmaschine
US6829456B2 (en) * 2002-05-10 2004-12-07 Hewlett-Packard Development Company, L.P. Printer calibration system and method

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63271275A (ja) * 1987-04-28 1988-11-09 Canon Inc 画像形成装置
US5550625A (en) * 1992-09-28 1996-08-27 Fuji Xerox Co., Ltd. Color image forming apparatus providing registration control for individual color images
US6198897B1 (en) * 1999-09-17 2001-03-06 Lexmark International, Inc. Method and apparatus for correcting transfer belt position via stored parameters
US6363228B1 (en) * 1999-09-17 2002-03-26 Lexmark International, Inc. Transfer belt image registration correction, operating parameters and life via stored parameters
DE10141035A1 (de) 2001-08-22 2003-03-20 Nexpress Solutions Llc Verfahren und Druckmaschine zum Ermitteln von Registerfehlern

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 0130, no. 89 (P - 836) 2 March 1989 (1989-03-02) *

Also Published As

Publication number Publication date
EP1445662B1 (fr) 2008-12-31
US7035557B2 (en) 2006-04-25
US20040234284A1 (en) 2004-11-25
ATE419563T1 (de) 2009-01-15
DE50310998D1 (de) 2009-02-12
DE10304763A1 (de) 2004-08-26

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