EP1156382B1 - Méthode et appareil pour l'ajustement de registre dans une imprimante couleur - Google Patents

Méthode et appareil pour l'ajustement de registre dans une imprimante couleur Download PDF

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Publication number
EP1156382B1
EP1156382B1 EP01109091A EP01109091A EP1156382B1 EP 1156382 B1 EP1156382 B1 EP 1156382B1 EP 01109091 A EP01109091 A EP 01109091A EP 01109091 A EP01109091 A EP 01109091A EP 1156382 B1 EP1156382 B1 EP 1156382B1
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EP
European Patent Office
Prior art keywords
register
printing
influence
consideration
parameters
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
EP01109091A
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German (de)
English (en)
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EP1156382A3 (fr
EP1156382A2 (fr
Inventor
Ingo Dreher
Heiko Hunold
Patrick Dr. Metzler
Karlheinz Dr. Pater
Christopher Liston
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Eastman Kodak Co
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Eastman Kodak Co
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Publication date
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Publication of EP1156382A2 publication Critical patent/EP1156382A2/fr
Publication of EP1156382A3 publication Critical patent/EP1156382A3/fr
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Publication of EP1156382B1 publication Critical patent/EP1156382B1/fr
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Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/01—Apparatus for electrographic processes using a charge pattern for producing multicoloured copies
    • G03G15/0142—Structure of complete machines
    • G03G15/0178—Structure of complete machines using more than one reusable electrographic recording member, e.g. one for every monocolour image
    • G03G15/0194—Structure of complete machines using more than one reusable electrographic recording member, e.g. one for every monocolour image primary transfer to the final recording medium
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2215/00—Apparatus for electrophotographic processes
    • G03G2215/00362—Apparatus for electrophotographic processes relating to the copy medium handling
    • G03G2215/00535—Stable handling of copy medium
    • G03G2215/00717—Detection of physical properties
    • G03G2215/00738—Detection of physical properties of sheet thickness or rigidity
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2215/00—Apparatus for electrophotographic processes
    • G03G2215/01—Apparatus for electrophotographic processes for producing multicoloured copies
    • G03G2215/0103—Plural electrographic recording members
    • G03G2215/0119—Linear arrangement adjacent plural transfer points
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2215/00—Apparatus for electrophotographic processes
    • G03G2215/01—Apparatus for electrophotographic processes for producing multicoloured copies
    • G03G2215/0151—Apparatus for electrophotographic processes for producing multicoloured copies characterised by the technical problem
    • G03G2215/0158—Colour registration
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2215/00—Apparatus for electrophotographic processes
    • G03G2215/01—Apparatus for electrophotographic processes for producing multicoloured copies
    • G03G2215/0151—Apparatus for electrophotographic processes for producing multicoloured copies characterised by the technical problem
    • G03G2215/0158—Colour registration
    • G03G2215/0161—Generation of registration marks

Definitions

  • the invention relates to a method for setting the register in a multi-color printing machine with a plurality of devices for digitally generated Operadurdem, wherein the register setting, the creation and assembly of the partial color images is controlled so that register-containing prints are achieved, with pressure-side influencing variables that have influence on the register , be taken into account before the occurrence of a change in the creation and assembly of the partial color images.
  • the invention further relates to an apparatus for carrying out the method with a multi-color printing machine having a plurality of devices for digitally generating Operadurdem, wherein at least one controller for obtaining register-containing prints performs a register setting, in which the generation and assembly of the partial color images controlled and pressure-side influencing variables that influence on the register, prior to any change in the control of the creation and assembly of the partial color images.
  • the printing of color representations takes place in that several partial color images are printed one above the other. These are usually the colors yellow, magenta and cyan as well as black. If necessary, special colors are added.
  • the overprinting of these colors can be achieved all color combinations, the quality of the prints depends significantly on the register-based overprinting of the partial color images.
  • digital, for example, electrostatic printing processes the registration of the overprinting achieved by the image generating means are controlled so that the partial color images in register on the transfer to a printing substrate meet.
  • a method and a device of the type mentioned is from the US Pat. No. 5,689,757 known. There, it is taught to take into account the influence of paper roughness on the setting of machine parameters and before the recorded with respect to its roughness print substrate passes the printing press.
  • this teaching assumes that one print page has run out of the machine before a print page is machined that has other predictors, such as another toner profile or other print substrate. Otherwise register errors during the transition phase are risked from one print page to another. This is due to the fact that printing substrates of the previous printing side are still in the machine while one or more image cylinders are already being imaged with the partial color images of the new printing page or if the printing couples print on different printed pages, for example if only one copy is to be printed from each printed page. In the latter case, each partial color image is also created only once. In the aforementioned cases, the printing substrate and the toner profile of the previous printing side determines the force transmission between the substrate for printing substrates, the transfer cylinder and the image cylinder.
  • the invention is therefore based on the object, a method and an apparatus of the type mentioned in such a way that no interruption of the printing process between two different printed pages is required, but can be immediately further printed without loss of quality.
  • the object is achieved according to the invention by the features specified in claim 1.
  • the retroactive influence of the influencing variables of the preceding pressure side is taken into account.
  • the at least one control is designed such that it takes into account the retroactive influence of the influencing variables of the previous pressure side in a register correction due to a change in pressure side influencing variables.
  • the advantage of the invention is that the print quality is ensured even with seamless further printing in a sequence of different printed pages with changes in the printing substrate, the toner profile or other pressure-related factors.
  • the print job-related factors influencing the register are taken into account at such an early stage - including their interaction in the conversion area from one order to another - that they no longer produce a register error.
  • a printing machine with the embodiment according to the invention can thus continue to print despite such a change, since the influence of changes on the register without interrupting the pressure between the creation of two partial color images can be compensated even if the new partial color image is already created and the preceding partial color image of the previous printed page , which differs from the following, has not been transferred or not yet fully transferred to the printing substrate.
  • the printing machine is thus suitable for prints in which each printed page with respect to image content and / or printing substrate differs from the other. There are no settings interruptions or waste prints and the prints can be made extremely economically with high quality.
  • Print-side influencing factors that influence the register are different.
  • One of these is the texture of the paper.
  • the paper thickness affects the cam position on a cylinder and thus the speed of the cylinder when it is driven, for example, via the support for printing substrates.
  • Such a cylinder may be an image cylinder or an image transfer cylinder when interposed between the image cylinder and the substrate for printing substrates.
  • the paper texture also has an effect on the contact pressure and the coefficient of friction, which in turn affect the register.
  • the influence of the toner profile is particularly important when image and substrate-carrying elements form a drive train, as is the case with most digital multi-color printing presses. This influence is particularly strong in a power transmission between image cylinder and image transfer cylinder.
  • the influence of the toner profile on the transmission ratio also exists in the case of a force transmission between the substrate carrier and the image transfer cylinder or between the substrate carrier and the image cylinder, such as in machines which have no image transfer cylinders. Also at these power transmission points the toner profile changes the effective radius and friction coefficient.
  • the influence of properties of the printing substrate used or the influence of the selected toner application can be taken into account.
  • the consideration of the influencing variables based on stored empirical values takes place.
  • these empirical values must be determined, for example, by the registration of register marks, since the paper grades are, however, a limited number, the required empirical values are available after detection, and the measure according to the invention with consideration of the influencing variables before this influence to have the pressure is possible.
  • a deposit of toner profiles is also possible, since the empirical values can refer to the percentage of the area coverage of the toner profile.
  • it it is proposed that it be equipped with at least one memory containing stored empirical values, the at least one controller, on the basis of these empirical values, controlling the creation and assembly of the partial color images.
  • the consideration of the influencing variables is activated by a manual input.
  • the device is then provided that it is equipped with an input device over which the influencing variables to be considered are manually activated.
  • a further expedient embodiment of the method provides that the consideration of the influencing variables takes place on the basis of a stored file of printed pages.
  • a printing machine control is provided, which contains stored files of printed pages and the consideration of the influencing variables is based on these files.
  • a device for the automatic detection of influencing variables is then provided.
  • An example of such an automatic detection is the detection of paper thicknesses and the consideration of empirical values associated with these paper thicknesses.
  • toner profiles are detected by measurement, for example by means of a densitometer, or otherwise, and empirical values associated with these toner profiles are taken into account.
  • empirical values are available for different types of paper and for different toner profiles.
  • at least one memory is then provided, which is loaded with empirical values for different types of paper and / or with empirical values for different toner profiles.
  • the inventive measure is used to correct a register control.
  • the method is used to correct a register control, which is based on the detection of register marks, which are printed by the individual printing units, the default setting of the register by means of the register marks is present and the changes of substrate and toner by the correction takes place before pressure-side-related changes can influence the register marks.
  • at least one controller is designed such that it carries out the aforementioned method.
  • the method is used to correct a register control based on the detection of the positions of the partial color image and substrate-carrying Elements is based.
  • the at least one controller is designed such that it controls the register by means of a detection of the positions of the partial color image and substrate-carrying elements by position detection elements and the influencing factors considered as correction factors.
  • position detection elements may be formed, for example, as a rotary encoder.
  • FIG. 1 1 shows the effect of a retroactive influence of the preceding printed page 33 on a new printed page 34.
  • a printing unit 9 of a multi-color printing machine 1 is shown.
  • Multi-color printing machines 1 have a plurality of printing units 9, 9 ',
  • the printing unit 9 has a device 2 for the digital production of partial color images 3 on an image cylinder 10.
  • the partial color image 3 is brought by transfer 30 from the image cylinder 10 onto an image transfer cylinder 11 further transfer 31, the partial color image 3 comes on a printing substrate 5.
  • the printing substrates 5 are transported by a printing substrate substrate 12, the printing substrates 5 successively all printing units 9, 9 ', ... happen.
  • the print substrate carrier 12 in turn drives the image transfer cylinders 11, 11', ... and these drive the image cylinder 10, 10 ', ....
  • the print substrate carrier 12 could also directly the image cylinder 10, 10 ', ... drive. This is the case with machines that have no image transfer cylinders 11, 11 ', ....
  • the arrows 29 show the directions of rotation of the cylinders 10, 10 ', ... and 11, 11', ... and the arrow 23, the transport direction of the printing substrates. 5
  • the image cylinder 10 is already imaged with the partial color image 3 of the new printing page 34 and may already be a transfer 30 from Image cylinder 10 on the image transfer cylinder 11 instead.
  • the paper type, in particular the paper thickness 27, may change.
  • a cam position 32 which affects the speed of the image transfer cylinder 11 is formed. If, for example, the paper thickness 27 is straightened in the direction of a thicker paper, the effective radius for the drive of the image transfer cylinder 11 increases since the paper thickness 27 is included therein. The effective circumference of the image transfer cylinder 11 is thus larger and thereby the image transfer cylinder 11 relative to the drive roller 28 slower.
  • An influence on the register also has a change in the coefficient of friction between a printing substrate 5 and the image transfer cylinder 11 and the coefficient of friction between the image transfer cylinder 11 and the image cylinder 10.
  • the paper roughness and the toner image enter into the friction coefficient.
  • the toner image is decisive for the variability of the coefficient of friction between the image cylinder 10 and the image transfer cylinder 11.
  • a toner application causes the elastic covering of the image transfer cylinder 11 to deform elastically, which in turn has an influence on the transmission ratio between the image transfer cylinder 11 and the image cylinder 10. Also, between the image transfer cylinder 11 and the printing substrate 5, the agitation changes when a toner image is transferred.
  • the relative position of the register changes Part color images 3, 3 ', ... is changed in this way.
  • Such a change in the relative position can take place within a printing unit 9 or even between the individual printing units 9, 9 ', ..., if they are affected by changes in the influencing variables 4, 4', 4 "between previous printed pages 33 and new printed pages 34. Both are always and simultaneously the case when successively printing pages 33, 34 different image content and / or different printing substrates 5 are printed, because then also each created partial color image 3, 3 ', ... differs from the next.
  • the object of the invention is that the registration of the prints in the area of the transition from one page of printing 33 to the next page 34 is guaranteed even if they are printed one after the other without interruption.
  • Fig. 2 shows an embodiment of the invention. In this case, several alternatives are shown, which may be provided in combination, but which are also possible individually.
  • the illustrated multicolor printing machine 1 is shown only with two printing units 9, 9 '. This is a simplification, normally four or more printing units 9, 9 ', ... are present. These must also be thought out here.
  • the multicolor printing machine 1 has devices 2, 2 ',... For the digital production of partial color images 3, 3'.
  • Each printing unit 9, 9 ', ... has image cylinders 10, 10',... And image transfer cylinders 11, 11 ',..., And transfers partial color images 3, 3',... Onto the printing substrates 5, these being in the direction of the arrow 23 are transported by the printing substrate carrier 12 through the printing machine 1.
  • controllers 7, 7 ', Control devices 2, 2 ', ... such that image beginnings, lines or areas of the partial color images 3, 3', ... are matched to one another.
  • Such controls 7, 7 ', ... can be designed so that each printing unit 9, 9', ... a register mark 8, 8 ', ... prints and these register marks 8, 8', ... of a Register sensor 17 are detected.
  • the evaluation of the position of the register marks 8, 8 ', ... gives the assignment of the partial color images 3, 3', ... and it can be made in case of deviations such a correction that the partial color images 3, 3 ', ... be transferred in register to the printing substrates 5.
  • the image cylinder 10, 10 ', ... and possibly also the image transfer cylinder 11, 11', ... with position detection elements 18, z. B. are equipped with rotary encoders.
  • Another rotary encoder 18 is provided on the drive roller 28 of the print substrate carrier 12.
  • Fig. 1 explained transition from a printing page 33 to a new printing page 34 and are doing the two printed pages 33 and 34 in the manner described above simultaneously in the multi-color printing machine 1, so this affects the register in the manner explained above.
  • Fig. 1 explained transition from a printing page 33 to a new printing page 34 and are doing the two printed pages 33 and 34 in the manner described above simultaneously in the multi-color printing machine 1, so this affects the register in the manner explained above.
  • a pressure of different printed pages There are even more than four different printed pages in the machine at the same time.
  • the invention solves this problem by taking into account the retroactive influence of the influencing variables 4, 4 ', 4 "of the preceding pressure side 33 in the case of a register correction as a result of a change in pressure-side-related influencing variables 4, 4', 4".
  • influencing variables 4, 4 ', 4 is that data of printed pages are input at an input device 14, which are forwarded via a connection 24 from the input device 14 to the controllers 7, 7',. wherein the controls 7, 7 ', ... retrieve empirical values 6, 6', 6 "from memories 13, 13 ',... stored on the basis of these data of the printed pages and thereby obtain the influencing variables 4, 4', 4", which In this way, the devices 2, 2 ', ... are capable of digitally generating partial color images 3, 3', ... without interruption in register ,
  • the influencing variables 4, 4 ', 4 "as well as the influencing variables in the form of stored empirical values 6, 6', 6" can be any influencing variables.
  • the influence 4 'of properties of the printing substrate 5 used or the stored empirical values 6' are listed here for different paper types or thicknesses.
  • the influence 4 "of the selected toner application, or the stored empirical values 6" for different toner profiles.
  • Other influencing variables 4 and empirical values 6 are of course possible.
  • the influencing variables 4, 4 ', 4 can also be determined by means of automatic detection of influencing variables 15.
  • this is very expedient for detecting the paper thicknesses 27 by means of a sensor 16.
  • the paper thickness 27 is connected via a connection 26 between the device 15 and the controls 7, 7 ', ... transmitted and these controls 7, 7', ... access the these paper thicknesses 27 associated empirical values 6 ', in memories 13, 13', ..
  • a connection 26 'to the printing machine controller 20 is also possible, for example, to link the paper thicknesses 27 with further stored data 19 and thus to obtain the influencing variable 4', taking into account further properties of the printing substrate 5 used automatic detection of influencing variables, for example a sensor 16 for measuring paper thickness 27 is expediently attached to a m conveyor belt 22 for supplying printing substrates 5 to the printing machine 1 is arranged.
  • corresponding means 15 for automatic detection of influencing variables 4, 4 ', 4 can also be arranged at other locations and on others Train way.
  • an image can be detected by means of a corresponding measuring device, for example a densitometer, in order to obtain the toner profiles therefrom, which are then likewise supplied to the controllers 7, 7 ',.
  • a corresponding measuring device for example a densitometer
  • a sensor 21 for detecting printing substrates 5 must still be arranged at the beginning of the printing substrate carrier 12. 7 ', ..., in which position a printing substrate 5 is found on the printing substrate support 12.
  • Fig. 2 The list in the embodiment of Fig. 2 is not exhaustive and it is not necessary to provide all the alternatives shown in the machine, for example it is also possible to provide only one input device 14 with a connection 24 to the controls 7, 7 ',..., which stores the stored empirical values 6, 6 Alternatively, it may be provided that the influencing variables 4, 4 ', 4 "are taken from stored data 19 by the printing press control 20. This can be done automatically or via an input on the input device 14. Another possibility, which is also possible separately, is the detection of influencing variables by means of a device 15, for example a sensor 16, the assignment of the measurement to the influencing variables 4, 4 ', 4 "again via the controls 7, 7',. .. can be done while also from a memory 13, 13 ', ... stored experience 6, 6', 6 "are retrieved.
  • a device 15 for example a sensor 16
  • the assignment of the measurement to the influencing variables 4, 4 ', 4 "again via the controls 7, 7',. .. can be done while also from a memory

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Color Electrophotography (AREA)
  • Color, Gradation (AREA)
  • Control Or Security For Electrophotography (AREA)
  • Color Image Communication Systems (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)

Claims (22)

  1. Procédé de réglage du registre d'une imprimante multicolore (1) comprenant plusieurs dispositifs (2, 2', ...) associés à plusieurs groupes d'impression (9, 9', ...) distincts, dans lequel, pour la production numérique d'images partielles en couleur (3, 3', ...), la production et l'assemblage des images partielles en couleur (3, 3', ...) sur la base de l'enregistrement de traits de repère (8,8', ...) du registre imprimés par les différents groupes d'impression (9,9', ...) dans le cadre du réglage de registre sont gérés de façon à obtenir des produits imprimés à repérage, des grandeurs d'influence (4, 4', 4") définies en fonction des pages imprimées et ayant un effet pour le registre, étant prises en compte avant une éventuelle modification de ces dernières lors de la production et de l'assemblage des images partielles en couleur (3, 3',...), caractérisé en ce que
    - l'effet rétroactif des grandeurs d'influence (4, 4', 4") de la page imprimée précédente (33) est pris en compte lors d'une correction du réglage de registre suite à une modification des grandeurs d'influence (4, 4', 4") définie en fonction des pages imprimées ;
    - l'influence de certaines caractéristiques (4') du substrat d'impression (5) utilisé est prise en compte comme grandeur d'influence définie en fonction des pages imprimées ;
    - la correction est réalisée avant qu'une éventuelle modification effectuée en fonction des pages imprimées puisse avoir une influence sur les traits de repère (8, 8', ...) du registre.
  2. Procédé selon la revendication 1, caractérisé en ce que l'influence de l'application de toner (4") choisie est prise en compte comme grandeur d'influence (4, 4', 4") définie en fonction des pages imprimées.
  3. Procédé selon l'une des revendications 1 ou 2, caractérisé en ce que la prise en compte des grandeurs d'influence (4,4',4") s'effectue sur la base de valeurs empiriques (6, 6',6") mémorisées.
  4. Procédé selon l'une quelconque des revendications 1 à 3, caractérisé en ce que la prise en compte des grandeurs d'influence (4, 4`, 4") est activée par une saisie manuelle.
  5. Procédé selon l'une quelconque des revendications 1 à 3, caractérisé en ce que la prise en compte des grandeurs d'influence (4, 4', 4") s'effectue sur la base d'un fichier (19) de pages imprimées (33, 34) mémorisé.
  6. Procédé selon l'une quelconque des revendications 1 à 3, caractérisé en ce que la prise en compte des grandeurs d'influence (4, 4', 4") s'effectue par un enregistrement automatique de ces grandeurs.
  7. Procédé selon la revendication 6, caractérisé en ce que les épaisseurs de papier (27) sont enregistrées et que les valeurs empiriques (6') associées à ces épaisseurs sont prises en compte.
  8. Procédé selon la revendication 6 ou 7, caractérisé en ce que des profils de toner sont enregistrés et que les valeurs empiriques (6") associées à ces profils sont prises en compte.
  9. Procédé selon l'une quelconque des revendications 1 à 8, caractérisé en ce que des valeurs empiriques (6') pour différents types de papier sont disponibles.
  10. Procédé selon l'une quelconque des revendications 1 à 9, caractérisé en ce que des valeurs empiriques (6") pour différents profils de toner sont disponibles.
  11. Procédé selon l'une quelconque des revendications 1 à 10, caractérisé en ce que ce procédé sert à la correction d'un réglage de registre fondée sur l'enregistrement des positions des éléments (10, 10`, ...; 11, 11', ...; 12) transférant des images partielles en couleur et des substrats.
  12. Dispositif de réalisation d'un procédé selon l'une quelconque des revendications 1 à 11 avec une imprimante multicolore (1) comprenant plusieurs dispositifs (2, 2', ...) associés à plusieurs groupes d'impression (9, 9', ...) distincts pour la production numérique d'images partielles en couleur (3, 3', ...), au moins un système de commande (7, 7', ...) effectuant un réglage de registre pour obtenir des produits imprimés à repérage en commandant la production et l'assemblage des images partielles en couleur (3, 3', ...) sur la base de l'enregistrement de traits de repérage (8, 8', ...) imprimés par les différents groupes d'impression (9, 9',...) et en tenant compte de certaines grandeurs d'influence (4,4',4") définies en fonction des pages imprimées et d'une influence sur le réglage de registre avant une éventuelle modification de ces dernières lors de la commande de la production et de l'assemblage des images partielles en couleur (3, 3', ...), caractérisé en ce qu'au moins un système de commande (7, 7', ...) est conçu de sorte que
    - ce système tienne compte, lors de la correction du réglage de registre, de l'effet rétroactif des grandeurs d'influence (4, 4`, 4") de la page imprimée précédente (33) suite à la modification des grandeurs d'influence (4, 4', 4") définies en fonction des pages imprimées ;
    - ce système tienne compte de l'influence des caractéristiques (4') du substrat d'impression (5) utilisé comme grandeurs d'influence définies en fonction des pages imprimées ;
    - la correction s'effectue avant que la modification effectuée en fonction des pages imprimées ne puisse avoir une influence sur les traits de repérage (8, 8', ...).
  13. Dispositif selon la revendication 12, caractérisé en ce que ce dispositif est équipé d'au moins une mémoire (13, 13', ...) contenant des valeurs empiriques (6, 6', 6") mémorisées, et d'au moins un système de commande (7, 7', ...) gérant la production et l'assemblage des images partielles en couleur (3, 3', ...) sur la base de ces valeurs empiriques (6, 6`, 6").
  14. Dispositif selon la revendication 12 ou 13, caractérisé en ce que ce dispositif est équipé d'un dispositif d'entrée (14) par lequel les grandeurs d'influence (4, 4', 4") à prendre en compte peuvent être activées manuellement.
  15. Dispositif selon l'une quelconque des revendications 12 à 14, caractérisé en ce qu'un système de commande d'imprimante (20) est prévu et contient des fichiers (19) mémorisés des pages imprimées (33, 34) et en ce que la prise en compte des grandeurs d'influence (4, 4', 4") s'effectue sur la base de ces fichiers (19).
  16. Dispositif selon l'une quelconque des revendications 12 ou 15, caractérisé en ce que ce dispositif est équipé d'un dispositif (15) d'enregistrement automatique des grandeurs d'influence (4, 4', 4").
  17. Dispositif selon la revendication 16, caractérisé en ce que le dispositif (15) est conçu de sorte qu'il enregistre les épaisseurs de papier par un capteur (16) et en ce que la mémoire (13, 13', ...) contient des valeurs empiriques (6') associées aux épaisseurs de papier (27).
  18. Dispositif selon l'une quelconque des revendications 12 à 17, caractérisé en ce que le dispositif (15) est conçu pour enregistrer des profils de toner à partir des fichiers d'images (19) numériques et en ce qu'au moins une mémoire (13, 13`, ...) contient des valeurs empiriques (6') associées aux profils de toner.
  19. Dispositif selon l'une quelconque des revendications 12 à 18, caractérisé en ce qu'au moins une mémoire (13, 13', ...) contient des valeurs empiriques (6') pour plusieurs types de papier.
  20. Dispositif selon l'une quelconque des revendications 12 à 19, caractérisé en ce qu'au moins une mémoire (13, 13', ...) contient des valeurs empiriques (6") pour plusieurs profils de toner.
  21. Dispositif selon l'une quelconque des revendications 12 à 20, caractérisé en ce qu'au moins un système de commande (7, 7', ...) est conçu de sorte qu'il régule le repérage par l'enregistrement des traits de repérage (8, 8',...) imprimés par les différents groupes d'impression (9, 9', ...) et détectés par un capteur de repérage (17) et qu'il tient compte des grandeurs d'influence (4, 4', 4") en tant que facteurs de correction.
  22. Dispositif selon l'une quelconque des revendications 12 à 21, caractérisé en ce qu'au moins un système de commande (7, 7', ...) est conçu de sorte qu'il règle le registre par l'enregistrement des positions des éléments (10, 10', ...; 11, 11', ..., 12) transférant les images partielles en couleurs et les substrats par des éléments d'enregistrement de position (18) et qu'il tient compte des grandeurs d'influence (4, 4', 4") en tant que facteurs de correction.
EP01109091A 2000-05-17 2001-04-12 Méthode et appareil pour l'ajustement de registre dans une imprimante couleur Expired - Lifetime EP1156382B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US20468100P 2000-05-17 2000-05-17
US204681P 2000-05-17

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EP1156382A2 EP1156382A2 (fr) 2001-11-21
EP1156382A3 EP1156382A3 (fr) 2005-11-09
EP1156382B1 true EP1156382B1 (fr) 2008-05-07

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US (1) US6522857B2 (fr)
EP (1) EP1156382B1 (fr)
AT (1) ATE394710T1 (fr)
DE (1) DE50113927D1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10304763A1 (de) * 2003-02-05 2004-08-26 Nexpress Solutions Llc Verfahren zur Korrektur der Kalibrierung eines passergenauen Druckprozesses
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

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5938756A (ja) * 1982-08-30 1984-03-02 Canon Inc 画像処理装置
JPS63297074A (ja) * 1987-05-29 1988-12-05 Konica Corp サ−マルプリンタ
JPH03149575A (ja) * 1989-11-07 1991-06-26 Hitachi Ltd カラープリンタ
US5689757A (en) * 1994-07-18 1997-11-18 Xerox Corporation Method and apparatus for detecting substrate roughness and controlling print quality
US5875380A (en) * 1997-02-18 1999-02-23 Ricoh Company, Ltd. Image forming apparatus eliminating influence of fluctuation in speed of a conveying belt to correction of offset in color registration
JP3691275B2 (ja) * 1998-06-12 2005-09-07 株式会社沖データ 電子写真プリンタ

Also Published As

Publication number Publication date
US6522857B2 (en) 2003-02-18
ATE394710T1 (de) 2008-05-15
DE50113927D1 (de) 2008-06-19
US20010055505A1 (en) 2001-12-27
EP1156382A3 (fr) 2005-11-09
EP1156382A2 (fr) 2001-11-21

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