WO2019179018A1 - Dispositif de commande de pression négative de cartouche d'encre et imprimante à jet d'encre - Google Patents

Dispositif de commande de pression négative de cartouche d'encre et imprimante à jet d'encre Download PDF

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Publication number
WO2019179018A1
WO2019179018A1 PCT/CN2018/101768 CN2018101768W WO2019179018A1 WO 2019179018 A1 WO2019179018 A1 WO 2019179018A1 CN 2018101768 W CN2018101768 W CN 2018101768W WO 2019179018 A1 WO2019179018 A1 WO 2019179018A1
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WO
WIPO (PCT)
Prior art keywords
ink cartridge
negative pressure
controller
ink
switching
Prior art date
Application number
PCT/CN2018/101768
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English (en)
Chinese (zh)
Inventor
司志涛
郭帅
林森
乔凤雨
Original Assignee
广东科达洁能股份有限公司
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Application filed by 广东科达洁能股份有限公司 filed Critical 广东科达洁能股份有限公司
Publication of WO2019179018A1 publication Critical patent/WO2019179018A1/fr

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    • 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
    • B41J2/17—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

Definitions

  • the present invention relates to the field of inkjet printing technology, and in particular to an ink cartridge negative pressure control device and an inkjet printer.
  • Inkjet printer is a printer that uses ink dot controllable technology to output images. Since its appearance, it has been widely used at home and abroad due to its unique advantages.
  • the ink jet printer performs ink jet printing by controlling the negative pressure in its ink cartridge so that the ink is ejected from the head under the action of a negative pressure. Therefore, the stable operation of the ink jet printer is closely related to its negative pressure control system. If the abnormality of the negative pressure control system occurs, the operation of the ink jet printer may be abnormal.
  • a programmable logic controller or a single chip microcomputer is generally used to perform a single control on the negative pressure controller of the ink cartridge, thereby realizing control of the negative pressure in the ink cartridge.
  • the invention provides an ink cartridge negative pressure control device and an inkjet printer, which are used for solving a large number of ink leakage problems that may exist in the prior art, and effectively reducing ink waste.
  • the ink cartridge negative pressure control device comprises: a nozzle, an ink cartridge, an ink cartridge, an ink cartridge negative pressure controller, an ink cartridge negative pressure controller, a main controller and a switching controller;
  • the main controller is connected to the switching controller, and the switching controller is respectively connected to the ink cartridge negative pressure controller and the ink cartridge negative pressure controller, the ink cartridge negative pressure controller and the Injecting the ink cartridge, the negative ink pressure controller of the ink cartridge is connected to the ink cartridge, and the ink inlet of the ink cartridge and the ink outlet of the ink cartridge are respectively connected to the nozzle;
  • the main controller is configured to send a negative pressure analog quantity signal and a switching signal to the switching controller, where the switching signal is used to indicate whether to allow switching from a working negative pressure to a holding negative pressure;
  • the switching controller is configured to determine a target negative pressure analog quantity according to the negative pressure analog quantity signal and the switching signal, and send the target negative pressure analog quantity to the ink cartridge negative pressure controller and the output ink cartridge negative Pressure controller
  • the ink cartridge negative pressure controller is configured to control a negative pressure in the ink cartridge according to the target negative pressure analog quantity, and the ink cartridge negative pressure controller is configured to simulate a negative pressure according to the target The negative pressure in the discharge cartridge is controlled.
  • the ink cartridge negative pressure control device further includes an ink cartridge pinch valve and an ink cartridge pinch valve;
  • the ink cartridge pinch valve is connected between the ink cartridge and the ink cartridge negative pressure controller, and the ink cartridge pinch valve is connected between the ink cartridge and the ink cartridge negative pressure controller;
  • the inlet cartridge pinch valve and the outlet cartridge pinch valve are respectively connected to the main controller;
  • the main controller is further configured to control opening and closing of the ink cartridge pinch valve and the ink cartridge pinch valve.
  • the ink cartridge negative pressure control device further includes an ink cartridge buffer tank and an ink cartridge buffer tank;
  • the ink cartridge buffer tank is connected between the ink cartridge pinch valve and the ink cartridge, and the ink cartridge buffer tank is connected between the ink cartridge pinch valve and the ink cartridge;
  • the ink cartridge buffer tank is configured to receive ink flowing from the ink cartridge to the ink cartridge negative pressure controller, and the ink cartridge buffer tank is configured to receive a negative pressure control from the ink cartridge to the ink cartridge Ink.
  • the ink cartridge negative pressure control device further includes an ink cartridge negative pressure sensor and an ink cartridge negative pressure sensor;
  • the ink cartridge negative pressure sensor is disposed on the ink cartridge buffer tank, and the ink cartridge negative pressure sensor is disposed on the ink cartridge buffer tank; the ink cartridge negative pressure sensor and the ink cartridge negative pressure sensor respectively Connected to the main controller;
  • the main controller is further configured to determine the negative pressure analog quantity signal according to an input signal of the ink cartridge negative pressure sensor and the ink cartridge negative pressure sensor.
  • the ink cartridge negative pressure control device further includes an ink cartridge back suction detector and an ink cartridge backward suction detector;
  • the ink cartridge back suction detector is disposed on the ink cartridge buffer tank, and the ink cartridge back suction detector is disposed on the ink cartridge buffer tank; the ink cartridge back suction detector and the ink cartridge are inverted a suction detector is respectively connected to the main controller;
  • the main controller is further configured to determine the negative pressure analog quantity signal and the switching signal according to an input signal of the ink cartridge back suction detector and the ink cartridge backward suction detector.
  • the switching controller is specifically configured to determine whether the negative pressure analog quantity signal and the switching signal meet a preset condition, where the preset condition is: the negative pressure analog quantity signal does not satisfy a preset range, And, the switching signal is used to indicate that switching from the working negative pressure to the holding negative pressure is allowed;
  • the preset negative pressure analog quantity is used as the target negative pressure analog quantity, and if not, the negative pressure analog quantity signal is used as the target negative pressure analog quantity.
  • the switching controller is further configured to send an alarm signal to the main controller when the negative pressure analog quantity signal and the switching signal satisfy a preset condition.
  • the switching controller is further configured to send the negative pressure analog quantity signal to the incoming ink cartridge controller and the output ink cartridge controller when detecting a self fault, and to the main control The device sends an alarm signal.
  • the main controller is a programmable logic controller PLC or a single chip microcomputer.
  • the inkjet printer of the present invention comprises the ink cartridge negative pressure control device according to any of the first aspects.
  • the ink cartridge negative pressure control device and the inkjet printer provided by the present invention connect the main controller and the switching controller, and the switching controller is respectively connected with the ink cartridge negative pressure controller and the ink cartridge negative pressure controller, and the switching controller
  • the target negative pressure analog quantity may be determined according to the negative pressure analog quantity signal and the switching signal sent by the main controller, and the target negative pressure analog quantity is sent to the ink cartridge negative pressure controller and the ink cartridge negative pressure controller to realize switching
  • the controller controls the negative pressure redundancy of the incoming and outgoing ink cartridges.
  • the switching controller can switch the working negative pressure of the ink cartridge and the ink cartridge to a negative pressure according to the switching signal sent by the main controller, so that the ink cartridge and the ink cartridge are kept in a certain state. Negative pressure, to avoid a large amount of ink leakage from the nozzle due to the loss of negative pressure in the ink cartridge, thereby reducing ink waste.
  • FIG. 1 is a schematic view showing a conventional negative pressure control principle of an ink cartridge
  • FIG. 2 is a schematic structural view of a first embodiment of an ink cartridge negative pressure control device according to the present invention
  • FIG. 3 is a schematic structural view of a second embodiment of an ink cartridge negative pressure control device according to the present invention.
  • FIG. 4 is a schematic structural view of a third embodiment of an ink cartridge negative pressure control device according to the present invention.
  • FIG. 5 is a schematic diagram of a control principle of a third embodiment of an ink cartridge negative pressure control device according to the present invention.
  • FIG. 6 is a schematic structural view of an embodiment of an inkjet printer provided by the present invention.
  • the inkjet printer is a printer that uses an ink dot controllable technology to output images. Since its appearance, it has been widely used at home and abroad due to its unique advantages.
  • the ink jet printer performs ink jet printing by controlling the negative pressure in its ink cartridge so that the ink is ejected from the head under the action of a negative pressure. Therefore, the stable operation of the ink jet printer is closely related to its negative pressure control system. If the abnormality of the negative pressure control system occurs, the operation of the ink jet printer may be abnormal.
  • FIG. 1 is a schematic diagram of the conventional negative pressure control principle of the ink cartridge.
  • the ink cartridge negative pressure controller is controlled by a PLC or a single-chip microcomputer.
  • the PLC or the single-chip microcomputer fails or is powered off, the ink cartridge is under negative pressure.
  • the control signal of the controller is lost, so that the negative pressure is immediately lost in the ink cartridge, resulting in a large amount of ink leakage from the nozzle, resulting in waste of ink.
  • the ink cartridge negative pressure control device provided by the invention can be used to solve the problem of a large amount of ink leakage which may exist in the prior art, and effectively reduce ink waste.
  • the ink cartridge negative pressure control device provided by the present invention can be used for all types of ink jet printers, for example, for ceramic ink jet printers, and for other types of ink jet printers.
  • the subsequent embodiments are described by taking the ink cartridge negative pressure control device of the ceramic inkjet printer as an example.
  • the ink cartridge negative pressure control device of the embodiment includes: a showerhead 40, an ink cartridge 10, an ink cartridge 20, and an ink cartridge.
  • the main controller 30 is connected to the switching controller 31, and the switching controller 31 is connected to the ink cartridge negative pressure controller 11 and the ink cartridge negative pressure controller 21, respectively, and the ink cartridge negative pressure controller 11 is connected with the ink cartridge 10, and the ink cartridge is negative.
  • the pressure controller 21 is connected to the discharge cartridge 20, and the ink inlet port of the ink cartridge 10 and the ink outlet of the ink cartridge 20 are connected to the head 40.
  • the main controller 30 is configured to transmit a negative pressure analog quantity signal and a switching signal to the switching controller 31 for indicating whether to allow switching from the operating negative pressure to the holding negative pressure.
  • the switching controller 31 is configured to determine a target negative pressure analog quantity according to the negative pressure analog quantity signal and the switching signal, and send the target negative pressure analog quantity to the ink cartridge negative pressure controller 11 and the ink cartridge negative pressure controller 21.
  • the ink cartridge negative pressure controller 11 is configured to control the negative pressure in the ink cartridge 10 according to the target negative pressure analog quantity
  • the ink cartridge negative pressure controller 21 is configured to face the ink cartridge 20 according to the target negative pressure analog quantity. The negative pressure is controlled.
  • the main controller 30 is a PLC or a single chip microcomputer.
  • the negative pressure analog quantity signal includes a negative pressure analog quantity of the ink cartridge and a negative pressure analog quantity of the ink cartridge, so that the switching controller 31 can respectively negatively apply the negative pressure to the ink cartridge 10 and the ink cartridge 20 according to the negative pressure analog quantity signal. Make adjustments.
  • the switching signal is used to indicate whether to allow switching from the working negative pressure to the holding negative pressure, the working negative pressure refers to the negative pressure of the ink cartridge when the nozzle is in the normal ink discharging state, and the holding negative pressure refers to when the negative pressure control occurs The negative pressure that the ink cartridge holds in order to prevent the nozzle from leaking ink during an abnormality.
  • the main controller 30 can monitor the working states of the ink cartridge 10 and the ink cartridge 20 in real time, and the working states include, but are not limited to, negative pressure parameters and whether or not a suction occurs, and the ink cartridge is determined according to the working state of the ink cartridge in real time.
  • the negative pressure adjustment amount of the ink cartridge 10 and the ink cartridge 20 is obtained, thereby obtaining a negative pressure analog amount signal.
  • the main controller 30 can also send different switching signals to the switching controller 31 as needed. For example, when the ink cartridge 10 and the ink cartridge 20 are in a normal working state, the switching controller 31 is not allowed to transmit a switch signal, so that the ink cartridge 10 and the ink cartridge 10 are inserted.
  • the output ink cartridge 20 is at a working negative pressure; when the main controller 30 fails or sends a power failure, the allowable switching signal sent to the switching controller 31 causes the ink cartridge 10 and the ink cartridge 20 to be switched to maintain a negative pressure to avoid loss due to the ink cartridge. Negative pressure causes a large amount of ink to leak from the nozzle.
  • the switching controller 31 After receiving the negative pressure analog quantity signal and the switching signal, the switching controller 31 determines the target negative pressure analog quantity according to the negative pressure analog quantity signal and the switching signal, and sends the target negative pressure analog quantity to the ink cartridge negative pressure
  • the switching controller 31 is connected to the ink cartridge negative pressure controller 11 and the ink cartridge negative pressure controller 21, respectively, and the switching controller 31 can be based on the main
  • the negative pressure analog quantity signal and the switching signal sent by the controller 30 determine the target negative pressure analog quantity, and send the target negative pressure analog quantity to the ink cartridge negative pressure controller 11 and the ink cartridge negative pressure controller 21 to realize switching.
  • the controller 31 controls the negative pressure redundancy of the ink cartridge 10 and the ink cartridge 20.
  • the switching controller 31 can switch the working negative pressure of the ink cartridge 10 and the ink cartridge 20 to a negative pressure according to the switching signal sent from the main controller 30, so that the ink cartridge 10 and the ink cartridge 10 are A certain negative pressure is maintained in the ink cartridge 20 to avoid a large amount of ink leakage from the nozzle due to the loss of negative pressure in the ink cartridge, thereby reducing ink waste.
  • FIG. 3 is a schematic structural view of a second embodiment of an ink cartridge negative pressure control device according to the present invention.
  • the ink cartridge negative pressure control device of the embodiment further includes an ink cartridge clamping valve. 12 and out of the cartridge pinch valve 22.
  • the ink cartridge pinch valve 12 is connected between the ink cartridge 10 and the ink cartridge negative pressure controller 11, and the ink cartridge pinch valve 22 is connected between the ink cartridge 20 and the ink cartridge negative pressure controller 21;
  • the output cartridge pinch valve 22 is connected to the main controller 30, respectively.
  • the main controller 30 is also used to control the opening and closing of the ink cartridge pinch valve 12 and the outlet cartridge pinch valve 22.
  • the main controller 30 can monitor the working states of the ink cartridge 10 and the ink cartridge 20 in real time, including but not limited to negative pressure parameters and whether or not suction is generated.
  • the main controller 30 can control the opening and closing of the ink cartridge pinch valve 12 and the ink cartridge pinch valve 22 according to the working state of the ink cartridge 10 and the ink cartridge 20 that are monitored in real time, for example, when the ink cartridge 10 and/or the ink cartridge are discharged.
  • the reverse suction occurs, the ink cartridge pinch valve 12 and the ink cartridge pinch valve 22 are closed.
  • the ink cartridge pinch valve 12 and the ink cartridge pinch valve 22 are fed. turn on.
  • the ink cartridge pinch valve 22 is connected to the ink cartridge 20 and the ink cartridge negative pressure controller 21. Therefore, when the main controller 30 detects that the ink cartridge 10 and/or the ink cartridge 20 are sucked up, the ink cartridge pinch valve 12 and the ink cartridge pinch valve 22 can be controlled to be closed, thereby preventing the ink in the ink cartridge 10 from being poured. The ink is sucked into the ink cartridge negative pressure controller 11 and the rear end pipe, and the ink in the ink cartridge 20 is prevented from being sucked into and out of the ink cartridge negative pressure controller 21 and the rear end pipe to protect the device from damage.
  • the ink cartridge negative pressure control device of the embodiment may further include an ink cartridge buffer tank 13 and an output ink cartridge buffer tank 23.
  • the incoming ink tank buffer tank 13 is connected between the ink cartridge pinch valve 12 and the ink feed cartridge 10
  • the discharge ink tank buffer tank 23 is connected between the discharge cartridge pinch valve 22 and the discharge cartridge 20.
  • the ink cartridge buffer tank 13 is for accommodating ink flowing from the ink cartridge 10 to the ink cartridge negative pressure controller 11 and the ink cartridge buffer tank 23 is for accommodating ink flowing from the ink cartridge 20 to the ink cartridge negative pressure controller 21.
  • the ink cartridge 10 when the ink cartridge 10 is sucked up, that is, when the ink in the ink cartridge 10 flows into the ink cartridge negative pressure controller 11, if the main controller 30 controls the ink cartridge pinch valve 11 to be closed, it may be A small amount of ink flows into the ink cartridge negative pressure controller 11, causing damage to the ink cartridge negative pressure controller 11 and the rear end piping.
  • the ink cartridge buffer tank 13 can accommodate the ink flowing from the ink cartridge 10 into the ink cartridge negative pressure controller 11 so that the ink cannot flow into the ink cartridge negative pressure controller 11 and the rear end pipeline, thereby further protecting the device from the ink. damage.
  • the ink cartridge negative pressure control device of the embodiment further includes an ink cartridge negative pressure sensor 14 and an ink cartridge negative pressure sensor 24.
  • the ink cartridge negative pressure sensor 14 is disposed on the ink cartridge buffer tank 13, and the ink cartridge negative pressure sensor 24 is disposed on the ink cartridge buffer tank 23; the ink cartridge negative pressure sensor 14 and the ink cartridge negative pressure sensor 24 are respectively connected to the main controller 30. .
  • the main controller 30 is further configured to determine the negative pressure analog quantity signal based on input signals of the ink cartridge negative pressure sensor 14 and the ink cartridge negative pressure sensor 24.
  • the ink cartridge negative pressure sensor 14 can obtain the current negative pressure parameter of the ink cartridge 10
  • the ink cartridge negative pressure sensor 24 can obtain the current negative pressure parameter of the ink cartridge 20.
  • the main controller 30 can be based on the ink cartridge 10 and the ink cartridge 20
  • the current negative pressure parameter determines the negative pressure adjustment amount of the ink cartridge 10 and the ink cartridge 20, thereby obtaining a negative pressure analog signal.
  • the ink cartridge negative pressure control device of the embodiment may further include an ink cartridge back suction detector 15 and an ink cartridge backward suction detector 25; the ink cartridge backward suction detector 15 is disposed on the ink cartridge buffer tank 13 The ink cartridge back suction detector 25 is disposed on the discharge cartridge buffer tank 23; the inlet cartridge back suction detector 15 and the outlet cartridge suction detector 25 are respectively coupled to the main controller 30.
  • the main controller 30 is further configured to determine the negative pressure analog quantity signal and the switching signal based on input signals of the ink tank back suction detector 15 and the ink tank back suction detector 25.
  • the ink cartridge back suction detector 15 can be used to detect whether the ink in the ink cartridge 10 is sucked up, and the ink cartridge back suction detector 25 can be used to detect whether the ink in the ink cartridge 20 is sucked up.
  • the main controller 30 determines the negative pressure analog signal and the switching signal according to whether the ink cartridge 10 and the ink cartridge 20 are sucked up. For example, if the ink cartridge 10 and the ink cartridge 20 are not sucked, the ink cartridge 10 is inserted.
  • the current negative pressure parameter of the ink cartridge 20 determines the negative pressure analog quantity signal, and sets the switching signal to not allow switching; if both the incoming ink cartridge 10 and the output ink cartridge 20 are sucked up or one of them is sucked, then the The negative voltage analog signal is set to zero, and the switching signal is set to not allow switching. It should be noted that the foregoing method for determining the negative voltage analog signal and the switching signal is merely an example, and the present invention is not limited thereto.
  • the main controller 30 is specifically configured to control opening and closing of the ink cartridge pinch valve 12 and the ink cartridge pinch valve 22 according to input signals of the ink cartridge back suction detector 15 and the ink cartridge back suction detector 25. For example, if the main controller 30 determines that no suction is generated in the ink cartridge 10 and the ink cartridge 20, the ink cartridge pinch valve 12 and the ink cartridge pinch valve 22 are controlled to open; if the main controller 30 determines the ink cartridge 10 and the ink cartridge. When both of the reverse suction occurs or one of the suctions occurs, the control of the ink cartridge pinch valve 12 and the discharge cartridge pinch valve 22 are closed.
  • the switching controller 31 is configured to determine whether the negative voltage analog quantity signal and the switching signal meet a preset condition, where the negative pressure analog quantity signal does not satisfy a preset range, and The switching signal is used to indicate that the negative pressure is allowed to be switched from the working negative pressure; if yes, the preset negative negative pressure analog quantity is used as the target negative pressure analog quantity, and if not, the negative pressure is simulated The quantity signal is used as the target negative pressure analog quantity.
  • the switching controller 31 is further configured to send an alarm signal to the main controller 30 when the negative voltage analog quantity signal and the switching signal satisfy a preset condition.
  • the switching controller 31 is further configured to: when the self fault is detected, send the negative pressure analog quantity signal to the ink cartridge controller 11 and the ink cartridge controller 21, and send an alarm signal to the main controller 30. .
  • the main controller 30 determines whether or not a reverse suction occurs based on the input signals of the ink cartridge back suction detector 15 and the ink cartridge back suction detector 25.
  • the main controller 30 determines the negative pressure adjustment amount of the ink cartridge 10 and the ink cartridge 20 according to the input signals of the ink cartridge negative pressure sensor 14 and the ink cartridge negative pressure sensor 24, and obtains a negative pressure analog signal; At the same time, the main controller 30 also determines whether the incoming ink cartridge 10 and the output ink cartridge 20 need to be switched from the working negative pressure to maintain the negative pressure, and if so, the switching signal is set to allow the switching signal, and if not, the switching signal is not allowed. The switching signal; at the same time, the main controller 30 opens the incoming cartridge pinch valve 12 and the outlet cartridge pinch valve 22.
  • the main controller 30 turns off the ink cartridge pinch valve 12 and the ink cartridge pinch valve 22, and at the same time, sets the negative pressure analog signal to zero, and sets the switching signal to not allow the switching signal.
  • the main controller 30 transmits the negative pressure analog amount signal and the switching signal to the switching controller 31.
  • the switching controller 31 After receiving the negative pressure analog quantity signal and the switching signal, the switching controller 31 determines the negative pressure analog quantity signal and the switching signal to implement negative pressure control of the incoming ink cartridge 10 and the output ink cartridge 20.
  • the switching controller 31 determines the negative pressure analog quantity signal and the switching signal to implement negative pressure control of the incoming ink cartridge 10 and the output ink cartridge 20.
  • the preset negative pressure analog quantity is to be preset.
  • the ink cartridge negative pressure controller 11 and the ink cartridge negative pressure controller 21 are sent to the ink cartridge 10 and the ink cartridge 20 to be switched from the working negative pressure to the negative pressure, that is, to the ink cartridge 10 and the ink cartridge 20.
  • the negative pressure is adjusted to the preset negative pressure analog amount, thereby avoiding a large amount of ink leakage of the nozzle due to the loss of the negative pressure of the ink cartridge.
  • the switching controller 31 sends an alarm signal to the main controller 30 to cause the main controller 30 to present the alarm information to the user.
  • the negative pressure analog quantity signal satisfies a preset range (for example, a scene in which the ink cartridge works normally)
  • the negative pressure analog quantity signal received from the main controller 30 is sent to the ink cartridge negative pressure controller 11 and the output
  • the ink cartridge negative pressure controller 21 causes the ink feed cartridge 10 and the discharge ink cartridge 20 to continue to be working negative.
  • the main controller is in a scene in which the ink cartridge 10 and/or the ink cartridge 20 are sucked up.
  • 30 has controlled that the ink cartridge pinch valve 12 and the outlet cartridge pinch valve 22 are closed, so that a certain negative pressure can be maintained in the ink cartridge 10 and the ink cartridge 20, so that the nozzle does not drip ink.
  • the ink cartridge pinch valve 12 and the ink cartridge pinch valve 22 are closed, so that the ink in the ink cartridge 10 and the ink cartridge 20 are not sucked into the ink cartridge negative pressure controller 11 and the ink cartridge negative pressure controller 21.
  • the switching controller 31 detects that it has failed, after receiving the negative pressure analog signal and the switching signal sent by the main controller 30, the above-mentioned determination is not performed, and the negative pressure analog signal is directly sent to the ink cartridge negative.
  • the pressure controller 11 and the ink cartridge negative pressure controller 21 are provided.
  • the switching controller 31 generates an alarm signal to the main controller 30 to cause the main controller 30 to present the alarm information to the user.
  • FIG. 6 is a schematic structural diagram of an embodiment of an inkjet printer provided by the present invention.
  • the inkjet printer of the embodiment includes an ink cartridge negative pressure control device, wherein the ink cartridge negative pressure control device can adopt any of the above
  • the structure of the ink cartridge negative pressure control device in the embodiment is similar to the technical effect, and will not be described herein.

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  • Ink Jet (AREA)

Abstract

L'invention concerne un dispositif de commande de pression négative de cartouche d'encre et une imprimante à jet d'encre, le dispositif de commande de pression négative de cartouche d'encre comprenant : une tête (40), une cartouche d'entrée d'encre (10), une cartouche de sortie d'encre (20), un dispositif de commande de pression négative de cartouche d'entrée d'encre (11), un dispositif de commande de pression négative de cartouche de sortie d'encre (21), un dispositif de commande principal (30) et un dispositif de commande de commutation (31). Le dispositif de commande principal (30) est connecté au dispositif de commande de commutation (31) et le dispositif de commande de commutation (31) est connecté au dispositif de commande de pression négative de cartouche d'entrée d'encre (11) et au dispositif de commande de pression négative de cartouche de sortie d'encre (21) respectivement. Le dispositif de commande principal (30) est utilisé pour envoyer au dispositif de commande de commutation (31) un signal de quantité analogique de pression négative et un signal de commutation ; et le dispositif de commande de commutation (31) est utilisé pour déterminer une quantité analogique de pression négative cible en fonction du signal analogique de pression négative et du signal de commutation et envoyer la quantité analogique de pression négative cible au dispositif de commande de pression négative de cartouche d'entrée d'encre (11) et au dispositif de commande de pression négative de cartouche de sortie d'encre (21), ce qui permet d'obtenir une commande redondante de la pression négative de la cartouche d'encre par le dispositif de commande de commutation (31). Lorsque le dispositif de commande principal (30) est défaillant ou qu'une anomalie telle qu'une panne de courant se produit au niveau du dispositif de commande principal, le dispositif de commande de commutation (31) peut commuter d'une pression négative de travail vers une pression négative de maintien, ce qui permet d'éviter la fuite d'une grande quantité d'encre de la tête en raison de la perte de la pression négative dans la cartouche d'encre.
PCT/CN2018/101768 2018-03-21 2018-08-22 Dispositif de commande de pression négative de cartouche d'encre et imprimante à jet d'encre WO2019179018A1 (fr)

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CN201810236501.8A CN110293763B (zh) 2018-03-21 2018-03-21 墨盒负压控制装置和喷墨打印机
CN201810236501.8 2018-03-21

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