EP4186705B1 - Luftzirkulationssystem für einen kontinuierlich arbeitenden tintenstrahldrucker - Google Patents

Luftzirkulationssystem für einen kontinuierlich arbeitenden tintenstrahldrucker

Info

Publication number
EP4186705B1
EP4186705B1 EP21306659.0A EP21306659A EP4186705B1 EP 4186705 B1 EP4186705 B1 EP 4186705B1 EP 21306659 A EP21306659 A EP 21306659A EP 4186705 B1 EP4186705 B1 EP 4186705B1
Authority
EP
European Patent Office
Prior art keywords
air
air flow
cabinet
heat generating
flow path
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
EP21306659.0A
Other languages
English (en)
French (fr)
Other versions
EP4186705A1 (de
Inventor
Vincent AUDOUARD
Jean-Christophe BLACHERE
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.)
Dover Europe SARL
Original Assignee
Dover Europe SARL
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 Dover Europe SARL filed Critical Dover Europe SARL
Priority to EP21306659.0A priority Critical patent/EP4186705B1/de
Priority to EP21844796.9A priority patent/EP4271569B1/de
Priority to US18/270,620 priority patent/US20240227410A1/en
Priority to PCT/EP2021/087878 priority patent/WO2022144430A1/en
Priority to CN202180094668.5A priority patent/CN117120268A/zh
Publication of EP4186705A1 publication Critical patent/EP4186705A1/de
Application granted granted Critical
Publication of EP4186705B1 publication Critical patent/EP4186705B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • B41J29/00—Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
    • B41J29/377—Cooling or ventilating arrangements
    • 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
    • B41J29/00—Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
    • B41J29/12—Guards, shields or dust excluders
    • B41J29/13—Cases or covers

Definitions

  • the invention concerns the field of continuous inkjet printers (CIJ).
  • At least one inlet of the third air flow path can be connected to the first air flow path and/or the second flow path upstream respectively of the first heat generating component and of the second heat generating component.
  • the cabinet can be split in three compartments, each accommodating one of the heat generating components and being separated from each of the other two compartments by a wall comprising an opening.
  • the air circulation system of a CIJ printer according to the invention can have at least one filter receiving portion to receive at least one filter between the air inlet and an inlet of at least the first and/or second flow paths, and/or at least one filter between the air circulation device and the air outlet.
  • the air inlet can be formed by a non-sealed space between a door and at least one wall of the cabinet.
  • ambient air can be introduced from outside of the cabinet, for example via a filter and into a compartment where one or more heat generating component(s), for example one or more electrical heat generating device(s), is located.
  • air can enter the cabinet through a non-sealed space comprising a slot located at a horizontal bottom of said door; preferably this non-sealed space is the one having the largest cross section for incoming air.
  • the air flow can be separated in three distinct air flows, wherein the first air flow accommodates said first heat generating component, for example an ink pump, the second air flow path accommodates said second heat generating component, for example a power supply, and the third air flow path accommodates a third heat generating component, for example a condenser.
  • the first air flow accommodates said first heat generating component, for example an ink pump
  • the second air flow path accommodates said second heat generating component, for example a power supply
  • the third air flow path accommodates a third heat generating component, for example a condenser.
  • air can be introduced into the cabinet through a non-sealed space between a door and at least one wall of the cabinet.
  • ambient air is introduced from outside of the cabinet, for example via a filter, into the cabinet, for example into a compartment where one or more heat generating component(s), for example one or more electrical heat generating device(s), is located.
  • a heat generating component is a component which generates heat when the printer is in operation; in particular, a CIJ printer comprises at least an ink pump to pump ink from an ink reservoir and/or from an ink cartridge and to send it to a print head: said pump generates heat when it is in operation.
  • a CIJ printer can also comprise at least a power supply device, which also generates heat during operation.
  • Other possible components of a CIJ printer according to the invention for example a condenser (to condense solvent vapours inside the printer or its cabinet) or a Peltier module (also to condense solvent) also generate heat during operation and can be located in an air flow path as described on this application.
  • the air enters the cabinet through an air inlet 2 and is evacuated outside of the cabinet through an outlet 20. It circulates through said cabinet under the action of an air circulation device 12.
  • an air circulation system generates two or three air flows within the cabinet to cool the heat generating components, the air entering the cabinet through an air inlet 2, and two or three air flows circulating through said cabinet under the action of an air circulation device 12 and being evacuated outside of the cabinet through outlet 20.
  • Air can flow through said wall(s) for example through one or more opening(s) or hole(s) or slot(s) 30a, 32a and/or along the lines where said internal wall(s) 30, 32 join said lateral wall(s) or side(s) 11, 13, 17.
  • Such an air flow can be sufficient to evacuate some heat from at least one further, or third, heat generating component 42, for example a condenser which condenses solvent from air.
  • Said third air flow path thus comprises said third component 42 and said air circulation device 12.
  • the air flows into said third air flow path from said first and/or second air flow paths, then over the third component 42, which is located upstream from the air circulation device 12, and then through said outlet 20. More precisely, air can be evacuated from said component 42 through one or more ducts 37; in a particular embodiment, the printer has no third heat generating component 42, but the third air flow path is used to evacuate hot air from inside said back zone or area of the cabinet.
  • the seal is on the frame 50 and cooperates with the closed door in the same way as explained above.
  • Figures 3C and 4 show how air filtered by the filter(s) 40 can be separated into two flows.
  • the filtered air exits the filter(s) and flows into the upper part of the cabinet though an inlet 9, a grid in the illustrated example.
  • part of the air (which has not yet extracted heat from the components located in said upper part) flows towards the air inlet 8 (which can be an opening in a wall between the upper compartment and the front compartment) of the first flow path, into the front compartment (where the ink pump 10 is located); the rest of the filtered air flows in the upper part 105, along the voltage supply 34 and possibly along one or more electronic component(s) or part(s) forming for example the controller 33.
  • the cabinet can include means, for example one or more walls 81 ( figure 3C ), for separating the air in said first flow path and said second air flow path.
  • the inlet of the first air flow is made by a duct inlet which is located against the outlet side of the filter 40.
  • the lower air flow 4 which enters the cabinet can be guided by one or more front foot/feet 43, so that the hot air flowing out of the cabinet from the air outlet(s) 20 cannot penetrate again into the air circulation system.
  • a vertical part 43a (see figure 2 ) of the foot/feet prevents the air coming from under the cabinet, and in particular the air flowing out of the cabinet through the hole(s) 20, to be recirculated into the air circulation system.
  • the cabinet 100 of a CIJ printer according to the invention is illustrated on figure 6 in combination with a print head 101 and a flexible umbilical cord 103 containing the hydraulic and electrical connections required for operation of the head, giving it a flexibility which facilitates inclusion of the head on a production line.
  • Reference 105 is a printing support on which a message is printed.
  • a gantry makes it possible to install the print head facing a printing support 105, which moves along a direction.
  • This direction is perpendicular for example to an axis of alignment of the nozzles of the print head or to an axis of deviation of the drops.
  • the support moves along direction X.
  • the position of the support with respect to the print head can be detected by a detector.
  • Such a printer can be integrated into a packaging machine.
  • Figures 7A and 7B show other aspects of cabinet 100 of a printer to which the invention can be applied.
  • the modules 110, 130, 150 are accessible from the front side of the printer, so that they can be easily disassembled from the circuit by an operator, independently of each other.
  • the ducts, valves and the other pumps of the circuit are not shown on figures 7A-B , but are also included in the hydraulic circuit.
  • the temperature differences are thus much higher for a CIJ printer cabinet having a single air flow path than for CIJ printer cabinet having an air circulation system according to the invention.

Landscapes

  • Ink Jet (AREA)

Claims (15)

  1. Kontinuierlicher Tintenstrahl- (CIJ)- Drucker, umfassend:
    - ein Gehäuse (100);
    - mindestens zwei wärmeerzeugende Komponenten (10, 34, 42), die sich innerhalb des Gehäuses befinden, wobei jede dieser wärmeerzeugenden Komponenten Wärme erzeugt, wenn der Drucker in Betrieb ist,
    - ein Luftzirkulationssystem zum Zirkulieren eines Luftstroms innerhalb des Gehäuses, um Wärme von den wärmeerzeugenden Komponenten abzuführen, wobei das Luftzirkulationssystem mindestens einen Lufteinlass (2, 4, 62, 64) zum Einführen von Umgebungsluft in das Gehäuse, einen Luftauslass (20) zum Abführen von Luft aus dem Gehäuse, einen Luftströmungsweg, der sich zwischen dem Lufteinlass und dem Luftauslass erstreckt, und eine Luftzirkulationsvorrichtung (12) umfasst,
    dadurch gekennzeichnet, dass der Strömungsweg in mindestens zwei unterschiedliche Strömungswege (3, 5, 7) unterteilt ist, wobei mindestens ein erster Luftströmungsweg (3) eine erste wärmeerzeugende Komponente (10) beherbergt und ein zweiter Luftströmungsweg (5) eine zweite wärmeerzeugende Komponente (34, 42) beherbergt,
    wobei die Luft in den ersten Luftströmungsweg beziehungsweise den zweiten Luftströmungsweg stromaufwärts der wärmeerzeugenden Komponente des zweiten Luftströmungswegs beziehungsweise des ersten Luftströmungswegs eintritt, sodass die Luft des ersten beziehungsweise des zweiten Luftströmungswegs nicht entlang der wärmeerzeugenden Komponente des zweiten beziehungsweise des ersten Luftströmungswegs zirkuliert wird.
  2. Kontinuierlicher Tintenstrahl- (CIJ)- Drucker nach Anspruch 1, wobei jede der wärmeerzeugenden Komponenten eine der folgenden ist: (i) eine Tintenpumpe, (ii) eine Stromversorgungseinheit oder (iii) ein Kondensator.
  3. Kontinuierlicher Tintenstrahl- (CIJ)- Drucker nach einem der Ansprüche 1 oder 2, wobei der Luftströmungsweg in drei unterschiedliche Luftströmungswege (3, 5, 7) unterteilt ist, wobei der erste Luftströmungsweg (3) eine Tintenpumpe (10) beherbergt, der zweite Luftströmungsweg (5) eine Stromversorgung (34) beherbergt und der dritte Luftströmungsweg einen Kondensator (42) beherbergt.
  4. Kontinuierlicher Tintenstrahl- (CIJ)- Drucker nach Anspruch 3, wobei mindestens ein Einlass (30a, 32a) des dritten Luftströmungswegs mit dem ersten Luftströmungsweg (3) und/oder dem zweiten Strömungsweg (5) stromaufwärts der Tintenpumpe (10) beziehungsweise der Stromversorgung (34) verbunden ist.
  5. Kontinuierlicher Tintenstrahl- (CIJ)- Drucker nach Anspruch 3 oder 4, wobei das Gehäuse in drei Fächer aufgeteilt ist, die jeweils eine der wärmeerzeugenden Komponenten beherbergen und jeweils von den anderen beiden Fächern durch eine Wand getrennt sind, die eine Öffnung (8, 30a, 332a) umfasst.
  6. Kontinuierlicher Tintenstrahl- (CIJ)- Drucker nach einem der Ansprüche 1-5, wobei das Luftzirkulationssystem weiter mindestens einen Filteraufnahmeabschnitt (63), um mindestens einen Filter (40) aufzunehmen, zwischen dem Lufteinlass (2, 4, 62, 64) und einem Einlass (8, 9) mindestens des ersten und/oder des zweiten Strömungswegs, und/oder mindestens einen Filter (44) zwischen der Luftzirkulationsvorrichtung (12) und dem Luftauslass (20) umfasst.
  7. Kontinuierlicher Tintenstrahl- (CIJ)- Drucker nach einem der Ansprüche 1-6, wobei der Lufteinlass durch einen nicht abgedichteten Raum zwischen einer Tür (6) und mindestens einer Wand des Gehäuses gebildet wird.
  8. Kontinuierlicher Tintenstrahl- (CIJ)- Drucker nach Anspruch 7, wobei der Lufteinlass dazu dient, Umgebungsluft von außerhalb des Gehäuses über einen Filter (40) in ein Fach einzuführen, in dem sich eine oder mehrere wärmeerzeugende Komponenten, beispielsweise eine oder mehrere elektrische Wärmeerzeugungsvorrichtungen, befinden.
  9. Kontinuierlicher Tintenstrahl- (CIJ)- Drucker nach einem der Ansprüche 1 bis 8, wobei der erste, der zweite und möglicherweise der dritte Strömungsweg weiter mindestens eines des Folgenden umfassen:
    - eine Abluftkammer (46) zum Leiten von Luft zwischen der Luftzirkulationsvorrichtung (12) und dem Luftauslass (20);
    - einen oder mehrere Kanäle oder Rohre (36, 37) zum Leiten erwärmter Luft von einem Bereich stromabwärts von mindestens einer der ersten und zweiten und möglicherweise der dritten wärmeerzeugenden Komponente zu der Luftzirkulationsvorrichtung (12).
  10. Kontinuierlicher Tintenstrahl- (CIJ)- Drucker nach einem der Ansprüche 1 bis 9, der weiter eine Kammer (48) zum Sammeln von Luft aus dem ersten Luftströmungsweg, dem zweiten Luftströmungsweg und möglicherweise dem dritten Luftströmungsweg stromaufwärts von der Luftzirkulationsvorrichtung (12) umfasst.
  11. Verfahren zum Zirkulieren von Luft in einem kontinuierlichen Tintenstrahl- (CIJ)-Drucker, wobei der Drucker ein Gehäuse (100) und mindestens eine erste wärmeerzeugende Komponente (10) und eine zweite wärmeerzeugende Komponente (34) umfasst, die sich innerhalb des Gehäuses befinden, wobei jede der wärmeerzeugenden Komponenten Wärme erzeugt, wenn der Drucker in Betrieb ist, wobei das Verfahren Folgendes umfasst:
    - Einführen von Luft in das Gehäuse, Zirkulieren eines Luftstroms innerhalb des Gehäuses, um Wärme von den wärmeerzeugenden Komponenten abzuführen, und Abführen des Luftstroms aus dem Gehäuse,
    dadurch gekennzeichnet, dass der Luftstrom in mindestens zwei unterschiedliche Luftströme (3, 5, 7) aufgeteilt wird, wobei mindestens ein erster Luftstrom (3) entlang der ersten wärmeerzeugenden Komponente (10) zirkuliert und ein zweiter Luftstrom (5) entlang der zweiten wärmeerzeugenden Komponente (34, 42) zirkuliert, wobei die Luft in den ersten Luftstrom beziehungsweise den zweiten Luftstrom stromaufwärts der wärmeerzeugenden Komponente des zweiten Luftströmungswegs beziehungsweise des ersten Luftstroms eintritt, so dass die Luft des ersten beziehungsweise des zweiten Luftstroms nicht entlang der wärmeerzeugenden Komponente des zweiten beziehungsweise des ersten Luftstroms zirkuliert ist.
  12. Verfahren nach Anspruch 11, wobei der Luftstrom in drei unterschiedliche Luftströme (3, 5, 7) unterteilt ist, wobei der erste Luftstrom (3) eine Tintenpumpe (10) beherbergt, der zweite Luftstrom (5) eine Stromversorgung (34) beherbergt und der dritte Luftstrom einen Kondensator (42) beherbergt.
  13. Verfahren nach Anspruch 12, wobei der dritte Luftstrom durch Luft aus dem ersten Luftstrom (3) stromaufwärts der Tintenpumpe (10) und/oder aus dem zweiten Luftstrom (5) stromaufwärts der Stromversorgung (34) zugeführt wird.
  14. Verfahren nach einem der Ansprüche 11 bis 13, wobei Luft durch einen nicht abgedichteten Raum zwischen einer Tür (6) und mindestens einer Wand des Gehäuses eingeführt wird.
  15. Verfahren nach Anspruch 14, wobei Umgebungsluft von außerhalb des Gehäuses über einen Filter (40) in ein Fach eingeführt wird, in dem sich eine oder mehrere wärmeerzeugende Komponenten, beispielsweise eine oder mehrere elektrische Wärmeerzeugungsvorrichtungen, befinden.
EP21306659.0A 2020-12-30 2021-11-29 Luftzirkulationssystem für einen kontinuierlich arbeitenden tintenstrahldrucker Active EP4186705B1 (de)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP21306659.0A EP4186705B1 (de) 2021-11-29 2021-11-29 Luftzirkulationssystem für einen kontinuierlich arbeitenden tintenstrahldrucker
EP21844796.9A EP4271569B1 (de) 2020-12-30 2021-12-30 Reinigungsverfahren für den hydraulikkreis eines tintenstrahldruckers
US18/270,620 US20240227410A1 (en) 2020-12-30 2021-12-30 Continuous Inkjet Printer
PCT/EP2021/087878 WO2022144430A1 (en) 2020-12-30 2021-12-30 Continuous inkjet printer
CN202180094668.5A CN117120268A (zh) 2020-12-30 2021-12-30 连续喷墨打印机

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP21306659.0A EP4186705B1 (de) 2021-11-29 2021-11-29 Luftzirkulationssystem für einen kontinuierlich arbeitenden tintenstrahldrucker

Publications (2)

Publication Number Publication Date
EP4186705A1 EP4186705A1 (de) 2023-05-31
EP4186705B1 true EP4186705B1 (de) 2025-07-23

Family

ID=78851282

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21306659.0A Active EP4186705B1 (de) 2020-12-30 2021-11-29 Luftzirkulationssystem für einen kontinuierlich arbeitenden tintenstrahldrucker

Country Status (2)

Country Link
EP (1) EP4186705B1 (de)
CN (1) CN117120268A (de)

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7258415B2 (en) * 2004-01-21 2007-08-21 Silverbrook Research Pty Ltd Printhead tile for use in a printing system
WO2009049140A1 (en) * 2007-10-12 2009-04-16 Videojet Technologies Inc. Filter for ink supply system
US8398231B2 (en) * 2009-08-21 2013-03-19 Zamtec Ltd Continuous web printer with upper and lower print zones for opposing sides of web
FR2955801B1 (fr) * 2010-02-01 2012-04-13 Markem Imaje Dispositif formant pupitre d'imprimante a jet d'encre continu, a concentrations de vapeur de solvant a l'interieur et autour du pupitre diminuees
GB201019679D0 (en) * 2010-11-19 2011-01-05 Domino Printing Sciences Plc Improvements in or relating to inkjet printers
FR3003798B1 (fr) * 2013-03-29 2015-10-30 Markem Imaje Circuit d'encre bas cout
WO2016024973A1 (en) * 2014-08-14 2016-02-18 Hewlett-Packard Development Company, L.P. Printer fluid circulation system including an air isolation chamber and a printer fluid pressure control valve
FR3036650A1 (fr) 2015-05-29 2016-12-02 Dover Europe Sarl Procede et dispositif de gestion de la qualite d'encre d'une imprimante a jet d'encre
GB201510456D0 (en) * 2015-06-15 2015-07-29 Videojet Technologies Inc Apparatus for printing
GB201510464D0 (en) * 2015-06-15 2015-07-29 Videojet Technologies Inc Printer
FR3038864A1 (fr) * 2015-07-13 2017-01-20 Dover Europe Sarl Brassage de l'encre dans une cartouche
FR3045458B1 (fr) * 2015-12-22 2018-02-16 Dover Europe Sarl Imprimante a jet d'encre a circuit de recuperation de solvant ameliore
EP3674088B1 (de) * 2018-12-28 2023-11-29 Dover Europe Sàrl Verbesserter tintenstrahldruckkopf mit wasserschutz

Also Published As

Publication number Publication date
EP4186705A1 (de) 2023-05-31
CN117120268A (zh) 2023-11-24

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