EP4201682A1 - Agencement de tête d'impression pour une imprimante à jet d'encre - Google Patents

Agencement de tête d'impression pour une imprimante à jet d'encre Download PDF

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Publication number
EP4201682A1
EP4201682A1 EP21216617.7A EP21216617A EP4201682A1 EP 4201682 A1 EP4201682 A1 EP 4201682A1 EP 21216617 A EP21216617 A EP 21216617A EP 4201682 A1 EP4201682 A1 EP 4201682A1
Authority
EP
European Patent Office
Prior art keywords
ink
print head
frame
printhead
arrangement according
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.)
Pending
Application number
EP21216617.7A
Other languages
German (de)
English (en)
Inventor
Angelo Schiestl
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to EP21216617.7A priority Critical patent/EP4201682A1/fr
Priority to JP2022200912A priority patent/JP2023092500A/ja
Priority to KR1020220177940A priority patent/KR20230095009A/ko
Priority to CN202211645562.2A priority patent/CN116278394A/zh
Publication of EP4201682A1 publication Critical patent/EP4201682A1/fr
Pending 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
    • 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
    • B41J2/17—Ink jet characterised by ink handling
    • B41J2/175—Ink supply systems ; Circuit parts therefor
    • 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
    • B41J2/135—Nozzles
    • B41J2/145—Arrangement thereof
    • 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
    • B41J3/4078—Printing on textile
    • 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
    • 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
    • B41J2/17—Ink jet characterised by ink handling
    • B41J2/175—Ink supply systems ; Circuit parts therefor
    • B41J2/17503—Ink cartridges
    • B41J2/17526—Electrical contacts to the cartridge
    • B41J2/1753—Details of contacts on the cartridge, e.g. protection of contacts
    • 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
    • B41J2/17—Ink jet characterised by ink handling
    • B41J2/175—Ink supply systems ; Circuit parts therefor
    • B41J2/17503—Ink cartridges
    • B41J2/17556—Means for regulating the pressure in the cartridge
    • 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
    • B41J2/17—Ink jet characterised by ink handling
    • B41J2/175—Ink supply systems ; Circuit parts therefor
    • B41J2/17596—Ink pumps, ink valves
    • 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
    • B41J2/17—Ink jet characterised by ink handling
    • B41J2/18—Ink recirculation systems
    • 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
    • B41J2202/12—Embodiments of or processes related to ink-jet heads with ink circulating through the whole print head

Definitions

  • the invention relates to a printhead arrangement for an inkjet printer, in particular for printing textiles, with a frame, a carriage which can be moved relative to the frame and on which a printhead with at least one inkjet nozzle for dispensing ink is arranged, at least one ink tank which is arranged on the frame at least one supply line for supplying ink from the ink tank to the printhead, a return line for returning unused ink from the printhead back to the ink tank, and at least one main pump arranged on the frame, which is connected to the supply line or the return line for pumping the Ink is arranged according to the preamble of claim 1.
  • EP 0 076 914 A2 discloses an ink jet printer with a recirculation system wherein a continuous flow of ink from and to an ink reservoir occurs by means of a pump.
  • the pump is arranged stationary between the ink tank and the carriage with the ink nozzles.
  • a generic printhead assembly is, for example, from WO 2006/030235 A2 out.
  • ink is fed from an ink tank via a main pump in a circuit to a print head on a carriage and ink is also fed back to the stationary ink tank via the same circuit.
  • the invention is based on the object of providing a print head arrangement in which a particularly reliable circulation of the ink and thus a consistently high ink quality is promoted.
  • the print head arrangement according to the invention is characterized in that at least one additional pump for pumping ink is arranged on the carriage.
  • this additional pump is not arranged at any arbitrary point, but rather on the movable carriage in the immediate vicinity of the at least one ink jet nozzle. This ensures, even in the event of rapid changes in ink requirements, that sufficient ink is supplied and that there is a safe circulation of ink during further operation.
  • the carriage can preferably remain free of an intermediate tank for the intermediate storage of ink. Problems associated with a change in ink quality can thus be avoided.
  • the at least one additional pump is moved together with the ink jet nozzles, so that there is always a fixed assignment to the ink jet nozzles and also a reliable ink circuit and thus a reliable ink supply.
  • a preferred embodiment of the invention consists in that a multiplicity of ink jet nozzles are arranged on the print head.
  • the ink jet nozzles can be designed and/or connected to apply the same ink or different inks, in particular different colors.
  • Inks in the context of the invention are not just the usual printing inks, but also other application fluids, such as pretreatment fluids for pretreating, impregnating or priming the textile and/or adhesive fluids for the subsequent application of flocking agents.
  • the pumps used i.e. the main pump and the additional pump
  • a particularly reliable supply of ink is achieved in that a supply line and an associated return line form a circuit to which a main pump and an additional pump are assigned.
  • the main pump when a circuit is formed, can be arranged in a stationary manner at any point in the circuit on the frame, in particular also on the return line.
  • the main pump it is particularly expedient for the main pump to be arranged in the feed line to the printhead.
  • the provision of a stationary main pump on the frame in the feed line to the print head leads to a particularly reliable supply of ink to the ink jet nozzles.
  • the additional pump can be connected to the movable carriage at any point on the ink circuit. According to one embodiment of the invention, it is particularly expedient that the additional pump is in the direction of flow after the inkjet nozzle and before or in the area of the return line.
  • a further advantageous embodiment of the invention is that at least one pressure sensor is arranged on the carriage, which is assigned to an ink jet nozzle.
  • the pressure sensor can be connected to a controller so that it can always be monitored and ensured that sufficient ink pressure and thus sufficient ink supply to the ink jet nozzle are guaranteed.
  • a controllable valve to be arranged in the feed line before the print head and/or in the return line after the print head.
  • the valve can in particular be a shut-off valve, through which the line is shut off when the pump stops, so that ink is prevented from flowing out of the print head.
  • the pressure of the ink liquid can be influenced very quickly via a controllable valve, and a predetermined pressure value or a pressure value range can be maintained.
  • a controllable throttle valve which is connected to the controller can be provided. Depending on the pressure value detected by the pressure sensor, the controller can, in particular, activate the pressure valve in order to approximate or adjust a measured actual value to a predefined setpoint value of the pressure.
  • a degassing device and/or a filter to be arranged in the feed line. In this way it can be achieved that unwanted Gas bubbles in the ink or coarser particles reach the ink jet nozzle, which counteracts any deterioration in print quality.
  • a further advantageous embodiment of the printing arrangement according to the invention is that a controller is provided which is connected to the at least one ink jet nozzle, the at least one valve, the at least one pressure sensor, the main pump and/or the auxiliary pump.
  • Various values can thus be recorded via the controller and preset values can be set in accordance with a preset control program. Monitoring and/or storage of the pressure profile is preferably also possible through the control.
  • the invention also includes a textile printing machine with a frame and at least one conveyor device, which is designed to receive and convey a textile, the textile printing machine being characterized by the use of a print head arrangement according to the invention as described above.
  • the textile printing machine With the textile printing machine, the advantages described above can be achieved when printing a textile.
  • the conveyor device has at least one plate-like pallet on which a textile can be picked up and stretched by means of a holding device.
  • a conveyor pallet with a mounting frame for example for mounting a T-shirt, can be provided.
  • a circulating conveyor can also be provided, for example for printing strip-shaped textiles.
  • the only drawing shows a schematic structure of a print head arrangement 10 according to the invention.
  • the print head assembly 10 comprises a frame 12, indicated only schematically, on which an ink tank 14 is arranged.
  • a defined temperature of an ink 5 in the ink tank 14 can be set via an optional heating device 15 .
  • the ink tank 14 can, as is generally known, with one or several sensors for detecting the temperature, the fill level and other conditions or quality / status characteristics of the ink 5 may be provided.
  • ink 5 can be supplied from the ink tank 14 via a supply line 16 to a carriage 30 with the print head 40 with at least one ink jet nozzle (not shown).
  • a filter 22 for retaining coarse solid particles and a degassing device 24 for retaining and/or discharging gas bubbles in the ink 5 can be provided on the supply line 16 .
  • the ink 5 is conveyed to an inlet line 32 by the main pump 20 via a first controllable check valve 26 and the carriage 30 which can be moved in relation to the frame 12 .
  • the inlet line 32 feeds the ink 5 to the print head 40 with the at least one inkjet nozzle, with unused ink 5 being removed directly from the carriage 30 to a return line 18 is returned back to the ink tank 14.
  • a circuit formed in this way ensures that ink 5 of good ink quality and thus good processing quality is always available to a sufficient extent at the print head 40 .
  • a second controllable check valve 28 can be provided in addition to a first controllable throttle valve 26 on the supply line 16 on the return line 18 after the additional pump 36.
  • a pressure sensor 38 can be arranged on the carriage 30 between the print head arrangement 40 and the return line 18 upstream of the additional pump 36 in the direction of flow, with which pressure of the ink 5 in the outlet line 34 can be determined. Further pressure sensors can also be provided in front of the print head and/or after the additional pump 36 .
  • the pressure sensor 38 can be in data communication with a controller that is not shown. Depending on the pressure data recorded from pressure sensor 38, the controller can activate first throttle valve 26 and/or second throttle valve 28 in such a way that an actual pressure value in print head assembly 10 corresponds to a prescribed target value or is within a target value range. If necessary, the main pump 20 and/or the additional pump can also be controlled by the controller 36 are controlled accordingly, in particular readjusted, in order to ensure a sufficient supply of ink 5 to the print head arrangement 40.
  • an intermediate storage of ink 5 directly on the carriage 30 by means of an intermediate tank can be dispensed with.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Ink Jet (AREA)
EP21216617.7A 2021-12-21 2021-12-21 Agencement de tête d'impression pour une imprimante à jet d'encre Pending EP4201682A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP21216617.7A EP4201682A1 (fr) 2021-12-21 2021-12-21 Agencement de tête d'impression pour une imprimante à jet d'encre
JP2022200912A JP2023092500A (ja) 2021-12-21 2022-12-16 インクジェット・プリンタ用のプリント・ヘッド機構
KR1020220177940A KR20230095009A (ko) 2021-12-21 2022-12-19 잉크젯 프린터의 프린트 헤드 장치
CN202211645562.2A CN116278394A (zh) 2021-12-21 2022-12-21 用于喷墨打印机的打印头布置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP21216617.7A EP4201682A1 (fr) 2021-12-21 2021-12-21 Agencement de tête d'impression pour une imprimante à jet d'encre

Publications (1)

Publication Number Publication Date
EP4201682A1 true EP4201682A1 (fr) 2023-06-28

Family

ID=79018715

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21216617.7A Pending EP4201682A1 (fr) 2021-12-21 2021-12-21 Agencement de tête d'impression pour une imprimante à jet d'encre

Country Status (4)

Country Link
EP (1) EP4201682A1 (fr)
JP (1) JP2023092500A (fr)
KR (1) KR20230095009A (fr)
CN (1) CN116278394A (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0076914A2 (fr) 1981-10-08 1983-04-20 International Business Machines Corporation Imprimantes à jet d'encre, comportant des systèmes de recirculation de l'encre
WO2006030235A2 (fr) 2004-09-18 2006-03-23 Xaar Technology Limited Procede et appareil d'alimentation en fluide
US20190299626A1 (en) * 2018-03-30 2019-10-03 Brother Kogyo Kabushiki Kaisha Printer, control method of printer, and non-transitory computer-readable medium storing computer readable instructions
US20200238701A1 (en) * 2019-01-29 2020-07-30 Seiko Epson Corporation Liquid discharge head, liquid discharge apparatus, method of controlling the liquid discharge head, and a method of controlling the liquid discharge apparatus
WO2020171714A1 (fr) * 2019-02-22 2020-08-27 Xyrec Ip B.V. Système d'impression et procédé d'impression sur des surfaces tridimensionnelles

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0076914A2 (fr) 1981-10-08 1983-04-20 International Business Machines Corporation Imprimantes à jet d'encre, comportant des systèmes de recirculation de l'encre
WO2006030235A2 (fr) 2004-09-18 2006-03-23 Xaar Technology Limited Procede et appareil d'alimentation en fluide
US20190299626A1 (en) * 2018-03-30 2019-10-03 Brother Kogyo Kabushiki Kaisha Printer, control method of printer, and non-transitory computer-readable medium storing computer readable instructions
US20200238701A1 (en) * 2019-01-29 2020-07-30 Seiko Epson Corporation Liquid discharge head, liquid discharge apparatus, method of controlling the liquid discharge head, and a method of controlling the liquid discharge apparatus
WO2020171714A1 (fr) * 2019-02-22 2020-08-27 Xyrec Ip B.V. Système d'impression et procédé d'impression sur des surfaces tridimensionnelles

Also Published As

Publication number Publication date
KR20230095009A (ko) 2023-06-28
CN116278394A (zh) 2023-06-23
JP2023092500A (ja) 2023-07-03

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