EP3934916B1 - Machine d'impression comportant un système à jet d'encre et un moyen de transport - Google Patents

Machine d'impression comportant un système à jet d'encre et un moyen de transport Download PDF

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Publication number
EP3934916B1
EP3934916B1 EP20707244.8A EP20707244A EP3934916B1 EP 3934916 B1 EP3934916 B1 EP 3934916B1 EP 20707244 A EP20707244 A EP 20707244A EP 3934916 B1 EP3934916 B1 EP 3934916B1
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EP
European Patent Office
Prior art keywords
printing
print
relevant
print substrate
print head
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.)
Active
Application number
EP20707244.8A
Other languages
German (de)
English (en)
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EP3934916A1 (fr
Inventor
Manuel KOMANDER
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.)
Koenig and Bauer AG
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Koenig and Bauer AG
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Publication date
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Publication of EP3934916A1 publication Critical patent/EP3934916A1/fr
Application granted granted Critical
Publication of EP3934916B1 publication Critical patent/EP3934916B1/fr
Active legal-status Critical Current
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J11/00—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
    • B41J11/02—Platens
    • B41J11/06—Flat page-size platens or smaller flat platens having a greater size than line-size platens
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J11/00—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
    • B41J11/001—Handling wide copy materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J11/00—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
    • B41J11/0085—Using suction for maintaining printing material flat
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J19/00—Character- or line-spacing mechanisms
    • B41J19/14—Character- or line-spacing mechanisms with means for effecting line or character spacing in either direction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/21—Ink jet for multi-colour printing
    • B41J2/2132—Print quality control characterised by dot disposition, e.g. for reducing white stripes or banding
    • B41J2/2146—Print quality control characterised by dot disposition, e.g. for reducing white stripes or banding for line print heads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J25/00—Actions or mechanisms not otherwise provided for
    • B41J25/001—Mechanisms for bodily moving print heads or carriages parallel to the paper surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
    • B41J3/407—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for marking on special material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
    • B41J3/407—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for marking on special material
    • B41J3/4073—Printing on three-dimensional objects not being in sheet or web form, e.g. spherical or cubic objects
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
    • B41J3/407—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for marking on special material
    • B41J3/4073—Printing on three-dimensional objects not being in sheet or web form, e.g. spherical or cubic objects
    • B41J3/40733—Printing on cylindrical or rotationally symmetrical objects, e. g. on bottles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
    • B41J3/407—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for marking on special material
    • B41J3/413—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for marking on special material for metal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/21—Ink jet for multi-colour printing
    • B41J2/2132—Print quality control characterised by dot disposition, e.g. for reducing white stripes or banding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/21—Ink jet for multi-colour printing
    • B41J2/2132—Print quality control characterised by dot disposition, e.g. for reducing white stripes or banding
    • B41J2/2139—Compensation for malfunctioning nozzles creating dot place or dot size errors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J25/00—Actions or mechanisms not otherwise provided for
    • B41J2025/008—Actions or mechanisms not otherwise provided for comprising a plurality of print heads placed around a drum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2202/00—Embodiments of or processes related to ink-jet or thermal heads
    • B41J2202/01—Embodiments of or processes related to ink-jet heads
    • B41J2202/20—Modules

Definitions

  • the invention relates to a printing machine with an inkjet system and with a transport device according to the preamble of claim 1.
  • a method for printing large-format workpieces, in particular sheets of paper and/or wood-based panels is known, with the following steps: a) fixing a workpiece to be printed on a movable carriage; b) moving the carriage relative to an inking device in a feed direction and printing a first strip-shaped section on the workpiece; c) moving the carriage and/or the inking device in a direction perpendicular to the feed direction; d) moving the carriage relative to the inking device and printing a second stripe portion on the workpiece adjacent to the first stripe portion; e) if the workpiece is not completely printed, repeat steps c) and d) until the workpiece is completely printed.
  • a print head of an inkjet system which has trapezoidal print nozzle arrays.
  • a device for processing a substrate with at least one device for the contactless application of a printing ink and/or a coating material to the substrate and with the substrate moving in a feed direction relative to the at least one device for the contactless application of the printing ink and/or the coating material on the substrate moving conveyor with an endless, preferably circulating load carrier, wherein the at least one device for contactless application of the ink e.g. B. is designed as a print head that prints in an inkjet printing process, wherein the at least one device for the contactless application of the printing ink and/or the coating material can be moved, in particular, remotely positioned, e.g. B. is arranged to be positioned by a motor.
  • the substrate to be processed is z. B. formed as a printed sheet of paper or plastic or as a particular metallic panel or as a flat body with at least one flat processing surface.
  • a method for printing non-absorbent substrates with a water-based ink in which ink drops are applied to the respective substrate, in which the ink is applied to the substrate in question with at least one inkjet print head, in which the ink drops are printed during a bidirectional movement of the Push button and / or the substrate in question are applied to the same.
  • an image forming apparatus provided with a recording head obtained by overlapping and arranging a plurality of short recording heads having a nozzle array of ink jet nozzles arranged in one direction to eject ink from the ink jet nozzle based on a value of an image signal and form an image, comprising an overlap correction control unit for controlling the driving of the ink jet nozzles according to a phase difference in an ink jet nozzle position between the overlapping short recording heads to correct the optical density of a formed image at an overlapping part of the recording heads; and an optical density characteristic correction control unit for controlling driving of the ink jet nozzles independently of the overlap correction control unit in accordance with optical density recording optics of a nozzle array composed of the ink jet nozzles.
  • an ink jet head comprising a nozzle array having a plurality of nozzles, the nozzle array comprising a first nozzle group arranged in a center thereof and second nozzle groups arranged further outward than the first nozzle group, and spacings between the nozzles of the second Nozzle groups are larger than distances between the nozzles of the first nozzle group.
  • a fluid ejection apparatus comprising a first row of nozzles having nozzles configured and arranged to eject a fluid onto a medium, the nozzles being arranged in a prescribed direction, the first row of nozzles being configured to form a first swath image, while facing a first location on the medium; a second row of nozzles having nozzles configured and arranged to eject a fluid onto the medium, the nozzles being arranged in the prescribed direction, wherein the second row of nozzles is configured to generate a second swath image while facing a second location on the media; a third row of nozzles having nozzles configured and arranged to eject a fluid onto the medium, the nozzles being arranged in the prescribed direction and the third row of nozzles being configured to produce a third swath image while being a third point on the medium facing; a memory section configured to store a dither mask used in a half
  • the invention is based on the object of creating a printing machine with an inkjet system and with a transport device in which the nozzle arrays of the print head of the inkjet system are used in an improved manner.
  • FIG. 1 shows a perspective view of a very simplified example of a printing press 01 with an inkjet system 02 and with a transport system 03, the inkjet system 02 having at least one, preferably digital, programmed control unit 04 and at least one print head 06 controlled to carry out a printing process; 07; 08; 09 and one for the relevant print head 06; 07; 08; 09 with reference to a print position specified by the control unit 04, e.g. B. by means of at least one linear drive positioning device 11, wherein the printing position specified by the control unit 04 with respect to a transported by the transport device 03, z. B. arch-shaped printing material 12 is specified.
  • the control unit 04 e.g. B. by means of at least one linear drive positioning device 11, wherein the printing position specified by the control unit 04 with respect to a transported by the transport device 03, z. B. arch-shaped printing material 12 is specified.
  • the inkjet system 02 is designed in such a way that, at least in one printing position specified by the control unit 04, a printing fluid is applied without contact to the relevant print head 06; 07; 08; 09 is applied to the preferably planar surface of the printing substrate 12, it being possible for a printing ink or an ink or a varnish to be used as the respective printing fluid.
  • the inkjet system 02 has several, z. B. four print heads 06, preferably arranged together in the same housing; 07; 08; 09, with these print heads 06; 07; 08; 09, preferably printing fluids with different colors are applied to the printing substrate 12 or can at least be applied, e.g. B. the process colors magenta, cyan, yellow and black.
  • the printing fluid is water-based in each case and is in particular embodied as a water-based ink.
  • the inkjet system 02 can also be designed to print at least one other solvent-based printing fluid or a printing fluid that is cured by ultraviolet radiation.
  • these are preferably arranged parallel to one another in each case transversely to the longitudinal extent of the transport device 03 in the same housing and are moved by the positioning device 11, e.g. B. together, ie in a rigid network along a route S moved.
  • the printing substrate 12 is arranged, in particular, lying flat on the transport system 03 and is positioned along a travel path relative to the at least one print head 06; 07; 08; 09 can be moved in both directions.
  • the two opposite feed directions T are in the 1 each indicated by a directional arrow.
  • the transport device 03 is z. B. designed as a movable transport table or as a self-contained conveyor belt. In order to carry out its respective feed movements, the transport device 03 has at least one z. B. designed as an electric motor drive 13, wherein the relevant drive 13 is preferably also controlled by the control unit 04.
  • the movable transport table can also z. B. be moved by a linear motor or a chain drive.
  • Printing material 12 is or is on transport system 03, e.g. B. held magnetically and / or by a vacuum generated by a suction device.
  • the printing material 12 which has a width B1 extending transversely to its travel path, has z. B. a non-absorbent surface to be printed. In the preferred embodiment is at least this surface z. B. formed from a metallic material.
  • the printing material 12 is z. B. a flat substrate, preferably a sheet metal z. B. in a format up to 1,000 mm x 1,200 mm, the printing material 12 having a material thickness z. B. in the range between 0.1 mm and 0.5 mm. With the aforementioned format of the printing material 12, its width B1 is up to 1,000 mm and its length L, which extends along the travel path, is up to 1,200 mm.
  • the print head 06; 07; 08; 09 has a shorter printing width B3 ( 2 ) than the width B1 of the printing material 12. Therefore, the relevant print head 06; 07; 08; 09 on a stretch S z. B. on or along at least one crossbar 14, which preferably completely bridges the transport device 03 transversely to their respective feed directions T, can be moved bidirectionally, which is 1 is indicated by a double arrow. Due to its lateral movement in relation to the printing material 12, which is controlled in particular by the control unit 04, the relevant print head 06; 07; 08; 09 are each positioned or at least positionable in succession by means of an associated positioning device 11 at at least two different printing positions specified by the control unit 04 in the region of the width B1 of the printing material 12. The distance S along which the relevant print head 06; 07; 08; 09 can be moved bidirectionally, its length preferably corresponds to at least one width B2 of the transport system 03, extending transversely to the travel path of the printing material 12.
  • a print head 06; 07; 08; 09 of an inkjet system 02 intended for an industrial printing process has at least one printing nozzle field 18, preferably several, e.g. B. three to five or more in a row arranged pressure nozzle arrays 18 ( 2 ), where in each of these Pressure nozzle arrays 18 are each arranged a plurality of individually controllable ink jet nozzles.
  • a print head 06; 07; 08; 09 on its printhead plate 17 several rows, preferably arranged parallel to one another, each with several printing nozzle arrays 18 lined up next to one another, can also be provided.
  • the at least one printing nozzle array 18 or the at least one row of printing nozzle arrays 18 is arranged to extend transversely to the travel path of printing substrate 12, with the length of the at least a print nozzle array 18 or the corresponding length of the relevant row of print nozzle arrays 18 lined up in a row a maximum print width B3 of the print head 06 in question; 07; 08; 09 defined.
  • the maximum achievable print resolution in the central area M of the relevant print nozzle array is 18,600 dpi (dots per inch), whereas in the two opposite edge areas R1; R2, preferably the same print resolution of at most 300 dpi, i.e. a maximum of only half the maximum print resolution that can be achieved in the central area M of the print nozzle field 18 in question, can be achieved.
  • adjacent printing nozzle arrays 18 are designed in such a way that their respective edge regions R1; Supplement R2 during the execution of a printing process for the maximum possible print resolution, such as in the central area M of the printing nozzle field 18 in question.
  • This embodiment variant consists in the absence of an additional edge area R1; R2 from an adjacent printing nozzle array 18 at the outer edge regions R1 arranged in the same row; R2 basically not, which is why these outer edge areas R1; R2 of the print nozzle arrays 18 of the relevant print head 06; 07; 08; 09 have so far remained unused to avoid reduced print quality when executing a print process.
  • a reduced print quality e.g. B.
  • the usual temperature control of the print head plate 17 that has the print nozzle arrays 18 can lead to inaccuracy in the positioning of the relevant print head 06; 07; 08; 09 to the order of magnitude of 100 ⁇ m, which leads to visible quality defects in the printed image generated on the printing material 12.
  • the relevant print head 06; 07; 08; 09 is positioned by the positioning device 11 at a specific printing position specified by the control unit 04 during a first printing process that prints on the printing substrate 12 such that a first edge region R1 of a printing nozzle field 18 of this print head 06; 07; 08; 09 at this predetermined printing position on the surface of the transported by the transport device 03
  • the printing material 12 is positioned along its travel path relative to the print head 06; 07; 08; 09 move bidirectionally several times.
  • the printing material 12 is thus printed multiple times relative to the print head 06; 07; 08; 09 moved.
  • the relevant print head 06; 07; 08; 09 is configured and/or controlled by control unit 04 in such a way that printing material 12 can be printed either only during a movement in the same feed direction T or, alternatively, during its movement in each of its two opposite feed directions T.
  • the print position specified by the control unit 04 with reference to the preferably sheet-shaped printing substrate 12 transported by the transport system 03 can e.g. B. the line of symmetry of this printing substrate 12 or of the transport device 03, which extends along the travel path of the printing substrate 12.
  • a printing machine designed in accordance with the proposed solution has the advantage that the preferably water-based printing fluid flows from the outer edge regions R1; R2 of the printing nozzle array 18 or the printing nozzle arrays 18 of the relevant print head 06; 07; 08; 09 in partial quantities with each printing process applied to the particularly non-absorbent surface of the printing substrate 12 in question that is being transported by transport system 03. Because one of the outer edge regions R1; R2 of the printing nozzle array 18 or the printing nozzle arrays 18 of the relevant print head 06; 07; 08; 09 applied quantity of z. B. water-based printing fluid tends to run.
  • the relevant print head 06; 07; 08; 09 in its second printing process, which prints on the same surface of the printing material 12 in question transported by the transport device 03, by the positioning device 11 at the same time as the printing process in question by the print head 06; 07; 08; 09, in particular with a correction value set by control unit 04 with regard to the printing position specified with reference to this printing material 12, if the first edge region R1 perpendicular to the travel path of printing material 06; 07; 08; 09 opposing second edge region R2 of the same printing nozzle array 18 or of another printing nozzle array 18 of the printing nozzle arrays 18 arranged in the same row of the relevant print head 06; 07; 08; 09 is arranged to print at this specific printing position on this surface of the printing material 12 transported by the transport device 03, which was already printed during the first printing process, along its travel path, in order to avoid disturbances, e.g. B. by manufacturing tolerances and / or thermal effects.
  • This further development of the proposed solution also has the advantage that over the entire width B1 of the printing material
  • FIG. 12 illustrates in a sketch the idea according to the invention when the printing material 12 is in the form of a round body.
  • the round body which is preferably to be printed on its lateral surface, is held on a holding device connected to or formed on the transport device 03 of the printing press 01 and is set in rotation about its longitudinal axis 16 by a drive, at least during the printing process.
  • the rotation of the round body corresponds to the feed of a z. B. sheet-shaped printing material 12 transported with the transport device 03, so that the travel of the z. B. arcuate substrate 12 is replaced by the perimeter of the round body.
  • the holding device holding the round body to be printed in particular on at least one of its end faces is z. B. as a mandrel or as a clamping device.
  • the rest of the mode of operation of the printing press 01 that has the inkjet system 02 and the transport system 03, including when printing at least one printing material 12 designed as a round body, corresponds to the description given for this printing press 01 with reference to

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Quality & Reliability (AREA)
  • Ink Jet (AREA)

Claims (15)

  1. Machine à imprimer avec un système à jet d'encre et avec un équipement de transport,
    a) dans laquelle le système à jet d'encre (02) présente au moins une unité de commande (04) et au moins une tête d'impression (06 ; 07 ; 08 ; 09) commandée pour l'exécution d'un processus d'impression et un équipement de positionnement (11) positionnant la tête d'impression (06 ; 07 ; 08 ; 09) concernée par rapport à une position d'impression prédéfinie par l'unité de commande (04), dans laquelle la position d'impression prédéfinie par l'unité de commande (04) par rapport à un matériau à imprimer (12) transporté par l'équipement de transport (03) est prédéfinie,
    b) dans laquelle le matériau à imprimer (12) transporté par l'équipement de transport (03) est déplaçable de manière bidirectionnelle le long d'une voie de déplacement par rapport à la tête d'impression (06 ; 07 ; 08 ; 09) positionnée dans la position d'impression prédéfinie par l'unité de commande (04) par rapport au matériau à imprimer (12),
    c) dans laquelle le matériau à imprimer (12) présente une largeur (B1) s'étendant transversalement par rapport à sa voie de déplacement,
    d) dans laquelle la tête d'impression (06 ; 07 ; 08 ; 09) positionnée dans la position d'impression prédéfinie présente une largeur d'impression plus courte transversalement par rapport à la voie de déplacement du matériau à imprimer (12) que la largeur (B1) du matériau à imprimer (12),
    e) dans laquelle la tête d'impression (06 ; 07 ; 08 ; 09) concernée est déplaçable de manière bidirectionnelle sur un trajet (S) disposé transversalement par rapport à la voie de déplacement du matériau à imprimer (12) et positionnée au moyen de l'équipement de positionnement (11) successivement dans au moins deux positions d'impression différentes prédéfinies respectivement par l'unité de commande (04) dans la zone de la largeur (B1) du matériau à imprimer (12),
    f) dans laquelle la tête d'impression (06 ; 07 ; 08 ; 09) concernée présente au moins un champ de buses d'impression (18) s'étendant transversalement par rapport à la voie de déplacement du matériau à imprimer (12),
    g) dans laquelle la tête d'impression (06 ; 07 ; 08 ; 09) concernée lors d'un premier processus d'impression imprimant le matériau à imprimer (12) est positionnée par l'équipement de positionnement (11) dans une position d'impression définie prédéfinie par l'unité de commande (04), de telle sorte qu'une première zone de bord (R1) d'un champ de buses d'impression (18) de cette tête d'impression (06 ; 07 ; 08 ; 09) est disposée dans cette position d'impression prédéfinie sur la surface du matériau à imprimer (12) transporté par l'équipement de transport (03) longitudinalement par rapport à la voie de déplacement de celui-ci de manière à effectuer une impression,
    h) dans laquelle la tête d'impression (06 ; 07 ; 08 ; 09) concernée lors d'un deuxième processus d'impression imprimant la surface du matériau à imprimer (12) concerné transporté par l'équipement de transport (03) est positionnée par l'équipement de positionnement (11) dans la position d'impression occupée par la tête d'impression (06 ; 07 ; 08 ; 09) concernée lors du premier processus d'impression, de telle sorte qu'une deuxième zone de bord (R2) du même champ de buses d'impression (18) ou d'un autre champ de buses d'impression (18) des champs de buses d'impression (18) de la tête d'impression (06 ; 07 ; 08 ; 09) concernée disposés dans la même rangée opposée à la première zone de bord (R1) transversalement par rapport à la voie de déplacement du matériau à imprimer (12) est disposée dans cette position d'impression définie sur la surface du matériau à imprimer (12) transporté par l'équipement de transport (03) longitudinalement par rapport à la voie de déplacement de celui-ci de manière à effectuer une impression,
    i) caractérisée en ce que le champ de buses d'impression (18) concerné ou chacun de ces champs de buses d'impression (18) de la tête d'impression (06 ; 07 ; 08 ; 09) concernée disposés dans une rangée présente respectivement sur ses deux zones de bord (R1 ; R2) opposées transversalement par rapport à la voie de déplacement du matériau à imprimer (12) respectivement une résolution d'impression moins élevée que dans sa zone centrale (M) disposée entre ces deux zones de bord (R1 ; R2),
    j) dans laquelle les zones de bord (R1 ; R2) respectives tournées l'une vers l'autre se complètent pendant l'exécution d'un processus d'impression pour la résolution d'impression maximale possible telle que dans la zone centrale (M) du champ de buses d'impression (18) concerné,
    k) et dans laquelle la tête d'impression (06 ; 07 ; 08 ; 09) concernée pour les zones de bord (R1 ; R2) extérieures disposées dans la même rangée, qui manquent d'une zone de bord (R1 ; R2) complémentaire d'un champ de buses d'impression (18) adjacent, lors d'un deuxième processus d'impression imprimant la même surface du matériau à imprimer (12) concerné transporté par l'équipement de transport (03), est positionnée par l'équipement de positionnement (11) dans la position d'impression occupée par la tête d'impression (06 ; 07 ; 08 ; 09) concernée lors du premier processus d'impression, de telle sorte qu'une deuxième zone de bord (R2) du même champ de buses d'impression (18) ou d'un autre champ de buses d'impression (18) des champs de buses d'impression (18) disposés dans la même rangée de la tête d'impression (06 ; 07 ; 08 ; 09) concernée opposée à la première zone de bord (R1) transversalement par rapport à la voie de déplacement du matériau à imprimer (12) est disposée dans cette position d'impression définie sur cette surface déjà imprimée lors du premier processus d'impression du matériau à imprimer (12) transporté par l'équipement de transport (03) longitudinalement par rapport à la voie de déplacement de celui-ci de manière à imprimer celui-ci.
  2. Machine à imprimer selon la revendication 1, caractérisée en ce que le matériau à imprimer (12) est réalisé en forme de feuille ou en tant que corps rond.
  3. Machine à imprimer selon la revendication 1 ou 2, caractérisée en ce que le matériau à imprimer (12) est disposé dans une position plane de manière à reposer sur l'équipement de transport (03).
  4. Machine à imprimer selon la revendication 1 ou 2 ou 3, caractérisée en ce que le matériau à imprimer (12) est retenu sur l'équipement de transport (03) de façon magnétique et/ou par une pression négative produite par un équipement d'aspiration.
  5. Machine à imprimer selon la revendication 1 ou 2 ou 3 ou 4, caractérisée en ce que l'équipement de transport (03) est réalisé en tant que table de transport déplaçable ou en tant que bande de transport fermée sur elle-même.
  6. Machine à imprimer selon la revendication 1 ou 2 ou 3 ou 4 ou 5, caractérisée en ce que la surface à imprimer du matériau à imprimer (12) transporté par l'équipement de transport (03) est réalisée de manière non aspirante.
  7. Machine à imprimer selon la revendication 1 ou 2 ou 3 ou 4 ou 5 ou 6, caractérisée en ce que le matériau à imprimer (12) est réalisé en tant que plaque de tôle.
  8. Machine à imprimer selon la revendication 1 ou 2 ou 3 ou 4 ou 5 ou 6 ou 7, caractérisée en ce que le matériau à imprimer (12) présente transversalement par rapport à sa direction de transport (T) une largeur (B1) allant jusqu'à 1 000 mm.
  9. Machine à imprimer selon la revendication 1 ou 2 ou 3 ou 4 ou 5 ou 6 ou 7 ou 8, caractérisée en ce que la tête d'impression (06 ; 07 ; 08 ; 09) concernée lors de son deuxième processus d'impression imprimant la même surface du matériau à imprimer (12) concerné transporté par l'équipement de transport (03) est ensuite positionnée par l'équipement de positionnement (11) dans la position d'impression occupée par la tête d'impression (06 ; 07 ; 08 ; 09) concernée lors du premier processus d'impression avec une valeur de correction réglée par l'unité de commande (04) en ce qui concerne la position d'impression prédéfinie par rapport à ce matériau à imprimer (12), lorsque la deuxième zone de bord (R2) du même champ de buses d'impression (18) ou d'un autre champ de buses d'impression (18) des champs de buses d'impression (18) de la tête d'impression (06 ; 07 ; 08 ; 09) concernée disposés dans la même rangée opposée à la première zone de bord (R1) transversalement par rapport à la voie de déplacement du matériau à imprimer (12) est disposée dans cette position d'impression définie sur cette surface déjà imprimée lors du premier processus d'impression du matériau à imprimer (12) transporté par l'équipement de transport (03) longitudinalement par rapport à la voie de déplacement de celui-ci de manière à effectuer une impression.
  10. Machine à imprimer selon la revendication 1 ou 2 ou 3 ou 4 ou 5 ou 6 ou 7 ou 8 ou 9, caractérisée en ce que le système d'injection (02) présente plusieurs têtes d'impression (06 ; 07 ; 08 ; 09), dans laquelle des fluides d'impression se différenciant respectivement par la teinte sont appliqués ou peuvent au moins être appliqués sur le matériau à imprimer (12) avec ces têtes d'impression (06 ; 07 ; 08 ; 09).
  11. Machine à imprimer selon la revendication 10, caractérisée en ce que les plusieurs têtes d'impression (06 ; 07 ; 08 ; 09) du système d'injection (02) sont disposées dans un même boîtier et sont déplaçables conjointement le long du trajet (S) par l'équipement de positionnement (11).
  12. Machine à imprimer selon la revendication 1 ou 2 ou 3 ou 4 ou 5 ou 6 ou 7 ou 8 ou 9 ou 10 ou 11, caractérisée en ce que le système d'injection (02) est réalisé de manière à imprimer au moins un fluide d'impression à base de solvant ou un fluide d'impression à base d'eau ou un fluide d'impression durcissant au moyen d'un rayonnement ultraviolet.
  13. Machine à imprimer selon la revendication 1 ou 2 ou 3 ou 4 ou 5 ou 6 ou 7 ou 8 ou 9 ou 10 ou 11 ou 12, caractérisée en ce que la résolution d'impression respective dans les zones de bord (R1 ; R2) du champ de buses d'impression (18) concerné opposées transversalement par rapport à la voie de déplacement du matériau à imprimer (12) est respectivement de même grandeur.
  14. Machine à imprimer selon la revendication 1 ou 2 ou 3 ou 4 ou 5 ou 6 ou 7 ou 8 ou 9 ou 10 ou 11 ou 12 ou 13, caractérisée en ce que la résolution d'impression respective dans les zones de bord (R1 ; R2) du champ de buses d'impression (18) concerné opposées transversalement par rapport à la voie de déplacement du matériau à imprimer (12) est respectivement deux fois plus petite que la résolution d'impression dans la zone centrale (M) de celui-ci disposée entre ces deux zones de bord (R1 ; R2).
  15. Machine à imprimer selon la revendication 1 ou 2 ou 3 ou 4 ou 5 ou 6 ou 7 ou 8 ou 9 ou 10 ou 11 ou 12 ou 13 ou 14, caractérisée en ce que la tête d'impression (06 ; 07 ; 08 ; 09) concernée est réalisée et/ou commandée par l'unité de commande (04) de telle sorte que le matériau à imprimer (12) est respectivement imprimé soit uniquement lors d'un mouvement dans respectivement la même direction d'avance (T) soit pendant son mouvement dans chacune de deux directions d'avance (T) contraires.
EP20707244.8A 2019-03-06 2020-02-25 Machine d'impression comportant un système à jet d'encre et un moyen de transport Active EP3934916B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019105629.2A DE102019105629B3 (de) 2019-03-06 2019-03-06 Druckmaschine mit einem Inkjetsystem und mit einer Transporteinrichtung
PCT/EP2020/054887 WO2020178077A1 (fr) 2019-03-06 2020-02-25 Machine d'impression comportant un système à jet d'encre et un moyen de transport

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EP3934916A1 EP3934916A1 (fr) 2022-01-12
EP3934916B1 true EP3934916B1 (fr) 2023-03-01

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US7434909B2 (en) * 2006-12-28 2008-10-14 Toshiba Tec Kabushiki Kaisha Ink-jet head and head unit
GB2464758B (en) * 2008-10-28 2012-11-07 Inca Digital Printers Ltd Substrate movement in a printer
JP2011235473A (ja) * 2010-05-07 2011-11-24 Seiko Epson Corp 流体噴射装置、プログラム、及び、流体噴射方法
JP5775510B2 (ja) * 2012-12-27 2015-09-09 富士フイルム株式会社 ヘッドモジュールの調整方法、インクジェットヘッドの製造方法
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DE102019105629B3 (de) 2020-04-16
EP3934916A1 (fr) 2022-01-12

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