EP1155846B1 - Procédé de repérage dans une machine d'impression polychrome - Google Patents

Procédé de repérage dans une machine d'impression polychrome Download PDF

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Publication number
EP1155846B1
EP1155846B1 EP01110278A EP01110278A EP1155846B1 EP 1155846 B1 EP1155846 B1 EP 1155846B1 EP 01110278 A EP01110278 A EP 01110278A EP 01110278 A EP01110278 A EP 01110278A EP 1155846 B1 EP1155846 B1 EP 1155846B1
Authority
EP
European Patent Office
Prior art keywords
printing
register
substrate
substrates
properties
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
EP01110278A
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German (de)
English (en)
Other versions
EP1155846A3 (fr
EP1155846A2 (fr
Inventor
Ingo Dreher
Patrick Dr. Metzler
Karlheinz Dr. Peter
Christopher Liston
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
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 filed Critical Eastman Kodak Co
Publication of EP1155846A2 publication Critical patent/EP1155846A2/fr
Publication of EP1155846A3 publication Critical patent/EP1155846A3/fr
Application granted granted Critical
Publication of EP1155846B1 publication Critical patent/EP1155846B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/08—Cylinders
    • B41F13/10—Forme cylinders
    • B41F13/12—Registering devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2213/00—Arrangements for actuating or driving printing presses; Auxiliary devices or processes
    • B41P2213/90—Register control
    • B41P2213/91—Register control for sheet printing presses

Definitions

  • the invention relates to a method for setting the register in a multicolor printing machine having a plurality of devices for digitally generating Operadurdem, wherein supply of printing substrates of another sort means before printing the pressure of existing correction values for correcting the register setting, the creation and assembly of the partial color images is controlled according to claim 1.
  • 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.
  • the registration of the overprinting is achieved by controlling the image forming means so that the partial color images register in register when transferred to a printing substrate.
  • a method 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 register when feeding of printing substrates of another variety. For this, the roughness of a paper to be printed is measured. The influence of the paper roughness on the register is then taken into account by the register control before the paper is fed to the printing process.
  • EP-A-0 770 480 a printing machine with an automatic register control for a plurality of imaging units having the features in the preamble of claim 1.
  • the document US-A-5,365,847 discloses a controller of a printing machine in which register errors are picked up and a reference image is changed with respect to.
  • the document DE-A-19844495 discloses a method for calibrating a digitally controllable printing press.
  • the invention is therefore based on the object, a method of the type mentioned in such a way that when changing the type of printing substrate, the influence of this change can be optimally compensated for the register before the printing substrate is fed to the printing process.
  • the object is achieved with respect to the method according to the invention by the features of claim 1
  • the invention is based on the finding that there are several properties of printing substrates which have an influence on the register and an optimal compensation of the effects of these properties when changing the printing substrate type is only possible if the sum of the influences of all relevant properties in this regard is taken into account. If essential properties are disregarded, then only the post-correction mentioned at the outset remains by evaluation of a test print result.
  • Optimal correction is achieved by the invention, since the sum of all these influences is taken into account, without it being important which and how many properties of the printing substrate have which influence. It is also possible to incorporate changes in the properties of a printing substrate within the machine as they change from one printing unit to another by heating, flattening, or printing with one or more partial color images. In this case, the correction values for the individual printing units are correspondingly different.
  • a register setting of known type can be optimized so that it does not first "out of control" at Drucksubstratsortenuncin to be subsequently corrected again, but the register setting remains within tolerable fluctuations, so that when changing to another variety of Print substrates can be printed without interruption.
  • the invention does not exclude the additional consideration of other influencing variables, which are caused by a pressure side, but not by the type of printing substrate.
  • An example of such an influence is the toner application, which is determined by the image motif and results in a different toner profile with respect to each partial color image. It also plays no role in the inventive measure, whether the print substrate carrier with the Print substrates for transferring the partial color images interacts directly with the image cylinders or whether image transfer cylinders are interposed.
  • a further development of the method provides that in a register correction as a result of a change of the printing substrate type the retroactive influence of the properties of the printing substrate from previous but still in the printing process printed pages on the register of the new, already in the printing process pressure side is taken into account.
  • the fact is taken into account for each printing unit that the influences on the register are still determined by the printing substrates of the previous printed pages, while already an imaging of the image cylinder is made with a partial color image of the new printed page.
  • this change of the printing substrate properties, which have a relevant influence on the register takes place successively on one printing group after the other, that is to say "through the machine". In this way, the registration of the prints is guaranteed even better at a pressure page change.
  • the printing press can continue to print without interruption even if between the creation of two partial color images of the print page change takes place so that the new partial color image is already created, while the previous partial color image of the previous page was not or not fully transferred to the print substrate.
  • the registration is thus ensured to a large extent and any mutual influence is compensated when successively different types of printing substrates are printed, even if they change with each print page.
  • the economic efficiency of the printing press is substantially increased and their use for printing individual editions is possible.
  • the at least one controller is designed such that it at a register correction due to a change of the printing substrate type the retroactive influence of the properties of the printing substrate of the previous, but still in the printing process printed pages on the register of the new, already taken into account in the printing process pressure side.
  • the consideration of the properties of printing substrates can be made on the basis of stored data for the common or repeating printing substrates.
  • the consideration of the change of the printing substrate type can take place by means of the storage of data to be processed printed pages. This is suitable for all machines that execute computer-controlled a number of printed pages and different printing substrates, with all the essential data of the printed pages, including those of the printing substrate to be used, are available.
  • the advantage is an automatic procedure that can be implanted using appropriate software.
  • the apparatus in order to take into account the characteristics of common types of printing substrates, it is contemplated that it is provided with at least one memory containing stored data of correction values of common or repeating print substrate locations, the at least one controller based on that data and merging the part color images controls.
  • An automatic consideration of data on printing substrates is achieved with respect to the device in that it is equipped with a memory for loading with data to be processed print pages and the at least one controller determines the required correction values from these data.
  • the determination of the correction values from the data may be either an immediate removal thereof or an access indication which the controller associates with the above-mentioned data on printing substrates for common or user-repeating printing substrate grades.
  • correction values for a printing substrate Another possibility for determining the correction values for a printing substrate is that correction values for various properties of printing substrates are available as stored data and that these properties are determined and the correction values resulting from these properties are taken into account.
  • the device is equipped with at least one memory which is loaded with data for various properties of printing substrates, that it has a device for measuring properties of printing substrates and that the at least one controller is designed such that they the correction values of the register setting resulting from these properties are used.
  • the influences of various properties such as the printing substrate thickness, the surface condition, the stiffness, etc., must be detected separately, in order then to determine the correction values for the respectively determined sum of different properties of a concrete printing substrate type. This procedure is particularly suitable if they are not common or repetitive types of printing substrate.
  • correction values themselves can be entered or it is possible that the entry of an identification makes use of stored data.
  • an input device is provided, via which the correction values or the identification can be entered.
  • the correction values for various printing substrates are machine-specific empirical values which can be input manually or are advantageously stored in at least one memory of the printing press.
  • Machine-specific can refer to a specific machine or to a specific machine type.
  • the empirical values can be determined by test prints and constantly corrected by evaluating prints during operation.
  • the invention has the purpose of serving to correct an existing register control.
  • the latter can be designed such that it is based on the detection of register marks, which are printed by the individual printing units.
  • the invention provides that this correction takes place before a change can influence the register marks.
  • the apparatus may also be provided for the at least one controller to be arranged to regulate the register by means of register marks which are printed by the individual printing units and detected by a register sensor and to take into account the correction values before any change in the type of printing substrate has an influence on the printing substrate Register can have.
  • the invention can also be used to correct a register control, which is based on the detection of the positions of the partial color image and substrate-carrying elements.
  • the at least one controller is designed such that it regulates the register by detecting the positions of the partial color image and substrate-carrying elements by position detection elements and takes into account the correction values before a change can influence the register marks.
  • the position detection elements may be rotary encoders.
  • the invention is used to correct one of the aforementioned register controls, then a significant advantage of the invention comes to bear. Since the invention fully takes into account the influence of a printing substrate type, the upstream Register adjustment without printing substrates in idle machine. Also register marks can be detected without printing substrates by being printed directly on the support and then removed again. In this way, no printing substrates are consumed for register setting.
  • the printing unit 8 has a device 2 for the digital production of partial color images 3 on an image cylinder 9.
  • the partial color image 3 is brought by a transfer 30 from the image cylinder 9 to an image transfer cylinder 10.
  • the partial color image 3 comes to a printing substrate 16.
  • the printing substrates 16 are transported by a printing substrate substrate 11, wherein the printing substrates 16 successively all printing units 8, 8 ', ... pass.
  • the drive via a drive roller 23 of the print substrate carrier 11 takes place.
  • the print substrate carrier 11 in turn drives the image transfer cylinders 10, 10', ... and they drive the Image cylinder 9, 9 ', ....
  • the print substrate carrier 11 could directly drive the image cylinder 9, 9', ....
  • the arrows 22 show the directions of rotation of the cylinders 9, 9 ', ...; 10, 10 ', ... and the arrow 29, the transport direction of the printing substrates 5 and thus the direction of movement of the printing substrate substrate eleventh
  • the printing substrate support 11 is in frictional communication with the printing substrates 16 with the image transfer cylinders 10, 10 ', ..., and they are in communication with the image cylinders 9, 9', ... since, for example, the carriage 11 drives the image transfer cylinder 11 at the location of the transmission 31 a cam 24, which affects the speed of the image transfer cylinder 10. If, for example, the printing substrate thickness 17 is changed in the direction of a thicker paper, then the effective radius for the drive of the image transfer cylinder 10 increases since the printing substrate thickness 17 is included therein. Thus, the effective circumference of the image transfer cylinder 10 becomes larger and thereby the image transfer cylinder 10 slower relative to the drive roller 23. However, this problem is independent of whether the Drive is introduced to the drive roller 23 or at another point, since the surfaces of the partial image and substrate-carrying elements 9, 9 ', ...; 10, 10 ', ...; 11 in any case roll on each other.
  • the printing substrate thickness 17 exerts an influence on the register.
  • a further influence results from the slip occurring between the pressure substrate 16 and the image transfer cylinder 10 during the power transmission.
  • This slip is in turn determined by the friction coefficient and thus by the surface condition 35 of the printing substrate 16 and by the contact pressure 34.
  • the contact pressure 34 increases again with a larger print substrate thickness 17. Since the force transmission takes place at the gaps between the printing substrates 16 through the print substrate 11, finally also the lengths 36 of the printing substrates 16 and the spacings 37 between the printing substrates 16 in the control of the creation of the Partial color images 3, 3 ', ... are included in order to achieve a register-accurate combination of the same.
  • printing substrates 16 can still play a role. It can turn out, especially with unusual printing substrates, that properties have an influence on the register, which does not play a role in other printing substrates. For this reason, it is expedient if the properties of printing substrates 16 based on stored data 6 (see Fig. 2 ), which contain correction values 4 as empirical values that take into account all properties in their total.
  • the manufacturer of the printing machine can provide data 6 for common types of printing substrate available and the printer has the ability, by means of a detection of proofs, for example by printing and the evaluation of register marks 7, 7 ', ... data 6 for other printing substrates 16 to detect and store when it processes these printing substrates 16 more often.
  • Fig. 1 Another problem will be explained below: While the partial color image 3 of the preceding printing page 5 from the image transfer cylinder 10th is transferred to a printing substrate 16, it is possible that the image cylinder 9 is already imaged by the device 2 with the partial color image 3 of a new printed page 5 '. This is indicated by the reference numerals 3 and 5 'and the dot-dashed arrows. In this case, in order to obtain a registration of the new printing page 5 ', the printing substrate properties of the printing substrates of the previous printing page 5 must be taken into account in the imaging of the image cylinder 9. Therefore, a development of the invention provides that the at least one controller 12, 12 ', ...; 15 (see Fig.
  • the Fig. 2 shows an embodiment of the invention, wherein a multi-color printing machine 1 with two printing units 8, 8 'is shown. Again, this is a simplification, usually four or more printing units 8, 8 ', ... are present. These must be thought out.
  • the multicolor printing machine 1 has devices 2, 2 ',... For the digital production of partial color images 3, 3',... On image cylinders 9, 9 ',.
  • these devices 2, 2 '... new partial color images 3, 3',... Are created for each printing, whereby each image can be different and can also be printed on another type of printing substrate 16.
  • Each printing unit 8, 8 ', ... has an image cylinder 9, 9', ... and an image transfer cylinder 10, 10 ', ..., the latter the partial color images 3, 3', ... on the printing substrates 16 transfer. These are transported in the direction of the arrow 29 by a printing substrate carrier 11 through the printing machine 1.
  • the partial color images 3, 3 ', ... are generated by the devices 2, 2',... In such a way that they are transferred in register to the printing substrates 16, controls 12, 12 ', Control devices 2, 2 ', ... such that image beginnings, lines or areas of the partial color images 3, 3', ... are matched to one another.
  • the controls 12, 12 ', ... can each be associated with a printing unit 8, 8',... Or it is possible that their task is performed by a printing press controller 15 for the entire multi-color printing machine 1.
  • Such controls 12, 12 ', ...; 15 may be configured so that each printing unit 8, 8 ', ... a register mark 7, 7', ... prints and these register marks 7, 7 ', ... are detected by a register sensor 18.
  • the evaluation of the position of the register marks 7, 7 ', ... 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 16.
  • Another possibility - which may be provided as an alternative or in addition to the former - is that the image cylinder 9, 9 ', ... and optionally also the. Image transfer cylinder 10, 10 ', ... with position detection elements 19, z. B. are equipped with rotary encoder. Another rotary encoder 19 is provided on the drive roller 23 of the printing substrate carrier 11. By means of these position detection elements 19, the positions of the cylinders 9, 9 ', ...; 10, 10 ', ... and the printing substrate support 11 to each other and it is thereby possible to detect positional shifts and by the controllers 12, 12', ...; 15 correct, so that register-accurate pressure is achieved.
  • the invention provides that the at least one controller 12, 12 ', ...; 15 is designed such that it takes into account with the aid of existing correction values 4, 4 ',... Of printing substrates 16 their influence on the register directly with a printed page change 5, 5'.
  • These correction values 4, 4 ',... Can be correction values 4 which are assigned to specific types of printed substrate or correction values 4',... Associated with the different printing substrate properties.
  • One way of taking account of the correction values 4, 4 ',... Of different types of printing substrates or different printing substrate properties is to input data from printed pages 5, 5', including the printing substrates to be used, to an input device 14. These are relayed via a connection 26 from the input device 14 to the controllers 12, 12 ',..., The controllers 12, 12',... Being stored as empirical values on the basis of these data of the printed pages 5, 5 ', retrieve data 6 for various types of printing substrates from memories 13, 13 ', ... and thereby obtain the correction values 4 of the same, which are taken into account by the controllers 12, 12', ... without time delay. In this way, the devices 2, 2 ', ... are able to carry out the digital generation of partial color images 3, 3', ... without interruption, even if changing types of printing substrate are printed.
  • the stored data 6 can be stored directly as correction values 4 or for the calculation thereof for the individual printing units 8, 8 ',... In the memories 13, 13',.
  • correction values 4 it is also possible for data from printed pages 5, 5 ',... To be transmitted via the input device 14 and a connection 27 to the printing press controller 15 and these via stored data 21 of print jobs of a memory 21 'there retrieves to be taken into account correction values 4 - or data to calculate the same - for different types of printing substrates 17.
  • the particular advantage of this embodiment is that almost everything is done by way of data processing and that correction values 4, which are available as empirical values, include all known or unknown effects of properties of the printing substrate type on the register.
  • the correction values 4, which the print engine controller 15 contains from the stored data 21 of the memory 21 ', are forwarded to the controllers 12, 12',... With a connection 27 '.
  • a further embodiment provides that a device 20 for measuring printing substrate properties is provided which measures the relevant with respect to their influence on the register properties of the multicolor printing machine 1, for example by a conveyor belt 25, fed pressure substrates 16, at least if a change of Pressure substrate type takes place.
  • correction values 4 ',... Associated with various printing substrate properties can be retrieved and taken into account taking into account any interactions, such as printing substrate thickness 17 and contact pressure 34. It is also possible for the stored data 6 'to be appropriately selected on the basis of the measurement, which data 6' can already take interactions into account by containing correction values 4 ',... For combinations of properties of printing substrates 16.
  • Fig. 2 In the presentation of Fig. 2 is printed by the printing unit 8 already the partial color image 3 of the new printing page 5 ', while the printing unit 8' nor the partial color image 3 'of the previous printing page 5 prints.
  • the print page change can also be at a different location, for example within a printing unit 8, 8 ',..., As shown in FIG Fig. 1 has been described.
  • a printed page change 5, 5 ', ... with a change of the printing substrate type between the printing units 8 and 8' instead, without that at this point the distance 37 between the printing substrates 16 is greater than in the printed pages 5 or 5 '.
  • the printing machine can thus by taking into account the influence of the properties of the printing substrate 16 of the previous printed pages 5 on the register of the new print page 5 '- as is Fig. 1 has been explained - print without any interruption, a print page 5 'to the other print page 5, even if changing print substrate types are used.
  • a sensor 22 for detecting the position of printing substrates 16 must be disposed at the beginning of the printing substrate carrier 11, which is assigned to the controllers 12, 12', in which position a printing substrate 16 is located on the printing substrate substrate 11.
  • Fig. 2 The list in the embodiment of Fig. 2 is not exhaustive and not all alternatives shown must be provided in one machine.
  • the correction values 4 are input directly at the input device 14 during a printing substrate change or that the correction values 4 are taken from a memory 21 'by the printing press controller 15 since they are included in the data 21 of printed pages 5, 5',. .. are included.
  • These data 21 can also be queried automatically for changed correction values 6 in the event of a print page change 5, 5 ',....
  • Another possibility, which is also possible separately, is the measurement of printing substrate properties by means of the device 20 described in order to retrieve stored correction values 4 ',... Or data 6',.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Control Or Security For Electrophotography (AREA)
  • Color Electrophotography (AREA)
  • Color, Gradation (AREA)
  • Electronic Switches (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Color Image Communication Systems (AREA)

Claims (7)

  1. Procédé de réglage du registre d'une imprimante couleur (1) avec plusieurs dispositifs (2, 2', ...) de génération numérique d'images partielles en couleur (3, 3', ...), la création et l'assemblage des images partielles en couleur (3, 3', ...) étant gérés, en cas d'alimentation de l'imprimante en supports d'impression (16) d'un autre type, par des valeurs de correction (4, 4', ...) définies avant l'exécution de l'impression pour assurer la correction du réglage du registre,
    caractérisé en ce que
    l'influence de toutes les caractéristiques du support d'impression (16) significatives pour le registre est prise en compte, en cas de changement du type de support d'impression, immédiatement avant l'exécution de la modification ;
    en ce que, en cas de correction de registre suite à un changement du type de support d'impression, l'effet rétroactif des caractéristiques du support d'impression (16) des pages à imprimer (5) précédentes mais toujours en cours d'impression est pris en compte pour le registre des nouvelles pages d'impression (5') déjà en cours d'impression ;
    en ce que le procédé est utilisé pour la correction d'un réglage de registre sur la base de la détection de marques de registre (7, 7', ...) imprimés par les différentes unités d'impression (8, 8', ...), cette correction étant effectuée avant qu'un changement du type de support d'impression ne puisse avoir une influence sur les marques de registre (7, 7', ...);
    en ce que le procédé est utilisé pour la correction d'un réglage de registre sur la base de la détection des positions des éléments (9, 9', ... ; 10, 10', ... ; 11) transmetteurs des images partielles en couleur et des supports d'impression avant qu'un changement du type de support d'impression ne puisse avoir une influence sur les marques de registre (7, 7',...); et
    en ce que les profils de toner des images partielles en couleur (3, 3', ...) des pages d'impression (5, 5', ...) sont pris en compte, comme éléments d'influence complémentaire pour le registre, suite à un changement des pages d'impression (5, 5', ...) lors du réglage de registre.
  2. Procédé selon la revendication 1,
    caractérisé en ce que
    la prise en compte des caractéristiques des supports d'impression (16) sur la base de données stockées (6) s'effectue pour les types de support d'impression courants ou pour ceux utilisés de manière répétitive par l'utilisateur.
  3. Procédé selon la revendication 1 ou 2,
    caractérisé en ce que
    la prise en compte d'un changement du type de support d'impression se fait par la mémorisation de fichiers (21) concernant les pages d'impression (5, 5',...) à traiter.
  4. Procédé selon la revendication 2,
    caractérisé en ce
    qu'un nouveau type de supports d'impression (16) est identifié par les mesures des caractéristiques du support d'impression (16) avant l'introduction de ce dernier dans le processus d'impression.
  5. Procédé selon l'une quelconque des revendications 1 à 4,
    caractérisé en ce que
    des valeurs de correction (4, 4', ...) pour les différentes caractéristiques des supports d'impression (16) sont disponibles sous la forme de données stockées (6') et en ce que ces caractéristiques sont déterminées et que les valeurs de correction (4, 4', ...) résultant de ces caractéristiques sont prises en compte.
  6. Procédé selon l'une quelconque des revendications 1, 4 ou 5,
    caractérisé en ce que
    la prise en compte d'un nouveau type de supports d'impression (16) se fait sur la base d'une saisie manuelle.
  7. Procédé selon l'une quelconque des revendications 1 à 6,
    caractérisé en ce que
    les valeurs de correction (4, 4', ...) pour les différents supports d'impression (16) sont des valeurs empiriques spécifiques de l'imprimante.
EP01110278A 2000-05-17 2001-04-26 Procédé de repérage dans une machine d'impression polychrome Expired - Lifetime EP1155846B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US20469500P 2000-05-17 2000-05-17
US204695P 2000-05-17

Publications (3)

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EP1155846A2 EP1155846A2 (fr) 2001-11-21
EP1155846A3 EP1155846A3 (fr) 2004-09-22
EP1155846B1 true EP1155846B1 (fr) 2008-11-19

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US (1) US6519423B2 (fr)
EP (1) EP1155846B1 (fr)
JP (1) JP2002031930A (fr)
AT (1) ATE414609T1 (fr)
DE (1) DE50114493D1 (fr)

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DE102016000335A1 (de) * 2016-01-18 2017-07-20 Heidelberger Druckmaschinen Ag Verfahren zur Kompensation auftrags- und maschinenspezifischer Passerungenauigkeiten und Registerfehler
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US11829084B2 (en) 2021-09-28 2023-11-28 Eastman Kodak Company Registration of white toner in an electrophotographic printer
US11822262B2 (en) 2021-09-28 2023-11-21 Eastman Kodak Company Registration of white toner using sensing system with colored reflector plate

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JPH10260562A (ja) * 1997-03-19 1998-09-29 Canon Inc 画像形成装置および画像形成装置の制御方法
US5966559A (en) * 1997-09-23 1999-10-12 Eastman Kodak Company Method and apparatus for sensing and accomodating different thickness paper stocks in an electrostatographic machine
JPH11188861A (ja) * 1997-12-26 1999-07-13 Canon Inc 情報処理装置および記録装置並びに記録方法
JP3691275B2 (ja) * 1998-06-12 2005-09-07 株式会社沖データ 電子写真プリンタ
DE19844495B4 (de) * 1998-09-29 2005-04-07 Man Roland Druckmaschinen Ag Verfahren zur Farbkalibrierung mittels Colormanagement für eine digital ansteuerbare Druckmaschine mit einer wiederbeschreibbaren Druckform

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Publication number Publication date
EP1155846A3 (fr) 2004-09-22
DE50114493D1 (de) 2009-01-02
EP1155846A2 (fr) 2001-11-21
US6519423B2 (en) 2003-02-11
US20010043816A1 (en) 2001-11-22
JP2002031930A (ja) 2002-01-31
ATE414609T1 (de) 2008-12-15

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