WO2025258024A1 - Dispositif d'impression à jet d'encre et son procédé de commande - Google Patents

Dispositif d'impression à jet d'encre et son procédé de commande

Info

Publication number
WO2025258024A1
WO2025258024A1 PCT/JP2024/021520 JP2024021520W WO2025258024A1 WO 2025258024 A1 WO2025258024 A1 WO 2025258024A1 JP 2024021520 W JP2024021520 W JP 2024021520W WO 2025258024 A1 WO2025258024 A1 WO 2025258024A1
Authority
WO
WIPO (PCT)
Prior art keywords
ink
ejection speed
inkjet recording
print
control unit
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
PCT/JP2024/021520
Other languages
English (en)
Japanese (ja)
Inventor
遼平 大村
安 邱
毎明 高岸
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.)
Hitachi Industrial Equipment Systems Co Ltd
Original Assignee
Hitachi Industrial Equipment Systems Co Ltd
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 Hitachi Industrial Equipment Systems Co Ltd filed Critical Hitachi Industrial Equipment Systems Co Ltd
Priority to PCT/JP2024/021520 priority Critical patent/WO2025258024A1/fr
Publication of WO2025258024A1 publication Critical patent/WO2025258024A1/fr
Pending 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
    • 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
    • B41J2/015—Ink jet characterised by the jet generation process
    • B41J2/02—Ink jet characterised by the jet generation process generating a continuous 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
    • B41J2/07—Ink jet characterised by jet control
    • B41J2/075—Ink jet characterised by jet control for many-valued deflection
    • B41J2/08—Ink jet characterised by jet control for many-valued deflection charge-control type
    • B41J2/085—Charge means, e.g. electrodes
    • 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
    • B41J2/195—Ink jet characterised by ink handling for monitoring ink quality

Definitions

  • the present invention relates to an inkjet recording device that ejects ink particles from nozzles, and a control method for the same.
  • an inkjet recording device such as that disclosed in Patent Document 1
  • ink ejected from a nozzle is charged by a charging electrode, and the path of the charged ink is changed by a deflection electrode to print on the print target.
  • Patent Document 1 discloses that in such an inkjet recording device, the number and insertion position of adjustment ink particles not used for printing are determined taking into account the acceleration and deceleration of the moving print object, thereby adjusting the print position and improving print quality.
  • the time it takes for ink to adhere to the print surface after being ejected i.e., the ink flight time
  • the ink ejection speed varies depending on factors such as the ink viscosity and the ink supply pressure to the nozzle. Therefore, if the ink viscosity or the ink supply pressure to the nozzle changes while the inkjet recording device is in use, the ink flight time will also change. For example, if the ink ejection speed becomes slower than the planned speed and the ink flight time becomes longer, the printing position will be shifted backward.
  • the printing position is adjusted in response to changes in the movement speed of the object to be printed, but this is based on the assumption that the ink flight time is constant, and no consideration is given to changes in the ink flight time. As a result, it is not possible to correct deviations in the printing position that occur when the ink ejection speed changes from the planned speed, which could result in a deterioration in print quality.
  • the object of the present invention is to provide an inkjet recording device and a control method therefor that reduce the occurrence of misalignment of the printing position caused by changes in ink ejection speed and suppress deterioration of print quality caused by changes in ejection speed.
  • the inkjet recording device of the present invention comprises a nozzle that ejects ink, a charging electrode that charges the ink ejected from the nozzle, a deflection electrode that deflects the charged ink, a charging voltage control unit that controls the charging voltage applied to the ink by the charging electrode, a sensor that acquires the ejection speed of the ink ejected from the nozzle, and a control unit that controls the charging voltage control unit to control printing on a substrate.
  • the control unit is configured to acquire the ejection speed of the ink ejected from the nozzle using the sensor, and to control the timing of charging the ink by the charging electrode based on the acquired ejection speed.
  • the present invention even when the ink ejection time in an inkjet recording device changes, it is possible to reduce deviations in the printing position and prevent deterioration in print quality.
  • FIG. 1 is a schematic perspective view of an inkjet recording apparatus according to an embodiment of the present invention.
  • FIG. 1 is a schematic block diagram of an inkjet recording apparatus.
  • FIG. 2 is a schematic diagram illustrating a configuration of an ink viscosity detection unit.
  • FIG. 1 is a schematic diagram illustrating the occurrence of misalignment of a printing position.
  • FIG. 2 is a schematic cross-sectional view of a print head.
  • 5 is a flowchart showing the flow of a print position correction process in the first embodiment.
  • 10 is a flowchart of a process for measuring the ink ejection speed.
  • FIG. 10 is a schematic cross-sectional view of a print head for explaining another example of a method for measuring the ejection velocity.
  • FIG. 10 is a flowchart showing the flow of a print position correction process in the second embodiment.
  • FIG. 10 is a simplified perspective view of a printing system according to a third embodiment.
  • FIG. 1 is a schematic block diagram showing the configuration of an inkjet recording device and a print inspection device.
  • 10 is a flowchart showing the flow of a print position correction process according to a third embodiment.
  • FIG. 1 is a schematic perspective view of an inkjet recording apparatus according to one embodiment of the present invention.
  • 1 is an inkjet recording device.
  • 2 is a print head that ejects ink.
  • 3 is a print target, and 4 is a belt conveyor that transports the print target.
  • Inkjet recording device 1 ejects ink from print head 2 and prints text or characters onto print target 3, which is moving in the direction of the arrow on belt conveyor 4.
  • FIG. 2 is a schematic block diagram of the inkjet recording device 1 in this embodiment.
  • the inkjet recording device 1 has a print control unit 10, a character signal generating circuit 30, an ink viscosity detection circuit 40, a charging voltage detection circuit 50, a panel 60, an ink container 70, pumps 80 and 81, and an ink viscosity detection unit 90.
  • the print control unit 10 is connected to the character signal generation circuit 30, ink viscosity detection circuit 40, charge voltage detection circuit 50, and panel 60, and controls the entire inkjet recording device 1.
  • the character signal generating circuit 30 converts the print content sent from the print control unit 10 into a character signal and controls the voltage applied to the charging electrode 22 of the print head 2, thereby controlling the charging voltage of the ink.
  • Ink particles ejected from the nozzles 21 of the print head 2 are charged by an electric charge corresponding to the voltage applied to the charging electrode 22.
  • the ink viscosity detection circuit 40 detects the viscosity of the ink based on the output from the ink viscosity detection unit 90.
  • the charge voltage detection circuit 50 uses the charge voltage detection sensor 26 to detect the charge of ink that is not used for printing and is collected by the gutter 24 of the print head 2.
  • the panel 60 displays setting information for the inkjet recording device 1, such as the length of the object to be printed, the printing distance, the writing start position, and/or the width of the character string to be printed, which is stored in the ROM 120, as well as information such as the operating status of the inkjet recording device 1.
  • the panel 60 is also used by the user to input setting information and give various instructions to the inkjet recording device 1.
  • the ink container 70 is a container that stores the ink used for printing.
  • the pump 80 supplies ink from the ink container 70 to the print head 2, and the pump 81 is a pump that returns ink that is not used for printing and is collected by the gutter 24 of the print head 2 to the ink container 70.
  • the ink viscosity detection unit 90 is connected to the ink container 70 and detects the viscosity of the ink stored in the ink container 70.
  • the print control unit 10 has an interface 130 to which an MPU (microprocessing unit) 100, RAM (random access memory) 110, ROM (read-only memory) 120, character signal generating circuit 30, ink viscosity detection circuit 40, and charge voltage detection circuit 50 are connected, and a panel interface 140 to which a panel 60 is connected.
  • MPU microprocessing unit
  • RAM random access memory
  • ROM read-only memory
  • RAM 110 is a volatile storage device that is used by MPU 100 to temporarily store data.
  • ROM 120 is a non-volatile storage device that can be read and written, such as flash memory. ROM 120 stores programs that MPU 100 executes to perform the functions of print control unit 10, such as calculating the speed and printing speed of belt conveyor 4, as described below, and controlling the printing operation of inkjet recording device 1, as well as data such as setting information used when the MPU executes programs.
  • Figure 3 is a schematic diagram showing the configuration of the ink viscosity detection unit 90.
  • the ink viscosity detection unit 90 has a cylindrical cylinder 900 filled with ink, with a cylindrical plunger 910 inside.
  • a coil 920 is provided on the outer periphery of the cylinder 900 for pulling the plunger 910 up to its upper limit position.
  • a drop detection sensor 930 is provided near the bottom end of the cylinder 900 to detect when the plunger 910 has fallen to its lowest limit position.
  • the ink viscosity detection unit 90 and ink container 70 are connected via an ink passage 91. Ink enters the cylinder 900 from the ink passage 91 and flows from the bottom to the top of the cylinder 900 in the diagram. Before measuring the ink viscosity, the ink viscosity detection circuit 40 energizes the coil 920 to raise the plunger 910 to its upper limit position, and guides the ink to be measured from the ink passage 91 into the cylinder 900. The ink viscosity detection circuit 40 then stops energizing the coil 920, drops the plunger 910, and measures the ink viscosity.
  • the fall detection sensor 930 detects that the plunger 910 has fallen and contacted the bottom end of the cylinder 900, and outputs a detection signal indicating this.
  • the ink viscosity detection circuit 40 measures the fall time from when the power supply to the coil 920 is stopped until it receives a detection signal from the fall detection sensor 930. The measured fall time is stored in RAM 110.
  • ROM 120 stores a table showing, for example, for a specific ink, the correlation between the plunger 910 fall time in the ink viscosity detection unit 90 and the ink viscosity.
  • the print control unit 10 can obtain the ink viscosity based on the correlation between the plunger 910 fall time and the ink viscosity stored in ROM 120 from the measurement results measured by the ink viscosity detection circuit 40 and stored in RAM 110.
  • Figure 4 is a schematic diagram to explain the occurrence of misalignment of the printing position.
  • the reference ink ejection speed is V1
  • the printing substrate 3 is moving at a speed of V4.
  • the characters shown in solid lines on the printing substrate 3 represent the characters that are actually printed
  • the characters shown in dashed lines represent the characters that would appear if printed at the reference ink ejection speed V1.
  • the diagram on the left side of Figure 4 shows the print head 2 printing at ink ejection speed V1.
  • ink ejection speed V1 there is no discrepancy between the characters actually printed and the characters that would be printed at the standard ejection speed.
  • the ink ejection speed is V2, which is faster than the standard ejection speed V1, as shown in the center diagram, the timing at which the ink lands on the print substrate 3 is faster than at ejection speed V1, so the print position is shifted in the direction of movement of the print substrate 3.
  • Figure 5 is a schematic cross-sectional view of the print head 2.
  • reference numeral 25 denotes a recovery flow path for recovering ink ejected from the nozzles 21 that is not used for printing and recovered in the gutter 24, into the ink container 70.
  • the ink recovered in the ink container 70 via the recovery flow path 25 is supplied to the nozzles 21 again for use in printing.
  • a charge voltage detection sensor 26 is attached to the recovery flow path 25 to detect the charge voltage of the ink particles recovered in the gutter 24.
  • the ink is conductive, and when charged ink particles reach the gutter 24, the potential of the ink in the recovery flow path 25 changes, allowing the charge voltage detection sensor 26 to detect that the charged ink particles have reached the gutter 24.
  • the charge voltage detection sensor 26 does not necessarily have to be attached to the recovery flow path 25; it need only be located in a position where it can detect the charge voltage (or the electric field caused by the charge) of the ink particles that have reached the gutter 24.
  • the charge voltage of the ink detected by the charge voltage detection sensor 26 is acquired by the charge voltage detection circuit 50.
  • Figure 6 is a flowchart showing the flow of the print position correction process in this embodiment.
  • the user can instruct the print control unit 10 to measure the ink ejection speed from the panel 60 at any time (S600).
  • the print control unit 10 measures the ink ejection speed using the process described below, and stores the ejection speed obtained by the measurement in RAM 110 (S610).
  • the print control unit 10 corrects the print position according to the ink ejection speed stored in RAM 110 during printing, and performs printing (S620).
  • the print control unit 10 controls the timing of charging the ink particles to be delayed, thereby shifting the print position in the direction opposite to the direction of movement of the print substrate 3, and correcting the print position. Conversely, if the ink ejection speed is slower than the ink ejection speed previously saved in RAM 110, the print position has shifted in the direction opposite to the direction of movement of the print substrate 3.
  • the print control unit 10 controls the timing of charging the ink to be advanced, thereby shifting the print position in the direction of movement of the print substrate 3, and correcting the print position.
  • FIG. 7 is a flowchart of the ink ejection speed measurement process in S610.
  • the ink ejection speed is measured when ink particles can be continuously collected by the gutter 24, such as between prints, that is, when ink particles are not used for printing for a certain period of time.
  • the print control unit 10 controls the nozzle 21 to eject ink from the nozzle 21 in the direction of arrow 200 (S700).
  • the print control unit 10 controls the voltage applied to the charging electrode 22 via the character signal generating circuit 30 to charge the ink droplets ejected from the nozzle 21.
  • the charging voltage applied to the charging electrode 22 is controlled to a magnitude that results in a deflection amount that allows the charged ink droplets to be captured by the gutter 24 (S710).
  • the character signal generating circuit 30 acquires the time when the voltage of the charging electrode was controlled.
  • the acquired time is stored in RAM 110 as the first time T1 (S720).
  • the charged ink is collected by the gutter 24 (S730), and the charge voltage of the collected ink is detected by the charge voltage detection sensor 26 (S740).
  • the charge voltage detection circuit 50 acquires the charge voltage detected by the charge voltage detection sensor 26, and acquires the time at which the charge voltage is detected by the charge voltage detection sensor 26 as the second time T2.
  • the acquired second time T2 is stored in the RAM 110, similar to the first time T1 (S750).
  • the ink ejection velocity V5 is calculated using the distance X1 from the nozzle 21 to the gutter 24, which is stored in advance in the ROM 120, and the times T1 and T2 stored in the RAM 110.
  • the ink ejection velocity V5 calculated here is stored in the RAM 110 (S760).
  • Figure 8 is a schematic cross-sectional view of a print head to explain another example of a method for measuring the ejection velocity.
  • the print head 2a shown in Figure 8 differs from the print head shown in Figure 5 in that two charge voltage sensors for detecting the charge voltage of ink particles (charge voltage detection sensors 26a, 26b) are provided at a distance apart, at positions along the flight path of the ink particles between the deflection electrode 23 and the gutter 24.
  • the charge voltage detection circuit 50 detects the charge voltage of the ink particles using the charge voltage detection sensors 26a, 26b, and obtains the time when the charge voltage is detected by the charge voltage detection sensor 26a as T3 and the time when the charge voltage is detected by the charge voltage detection sensor 26b as T4.
  • Measurement using the configuration shown in Figure 7 requires more sensors than measurement using the configuration shown in Figure 5, so there is a cost difference, but it is possible to measure the ink ejection speed in the same way as the measurement method shown in Figure 5.
  • the user can instruct measurement of the ink ejection speed at any time, correcting any deviation in the printing position due to changes in the ink ejection speed and preventing deterioration in print quality. Furthermore, since the measurement is performed at a time when the ink is not being used for printing while the inkjet recording device is in operation, the ink ejection speed can be measured without stopping printing. Furthermore, this charging voltage detection timing prevents erroneous voltage detection due to the charging voltage of the ink used for printing, making it possible to accurately determine the ink ejection speed.
  • the amount of correction for the print position is determined by obtaining the ink ejection speed, but instead of directly determining the ejection speed, the time it takes for an ink particle to reach the gutter after being ejected from the nozzle, or the time it takes for the ink particle to fly between sensors, can also be used as the ejection speed.
  • the amount of correction can be obtained from the difference in arrival time (amount of change) and the ratio of the distance from the nozzle to the gutter (or the distance between the sensors) to the distance from the nozzle to the print target.
  • the ink ejection speed is measured at any timing instructed by the user. It is also known that the ink ejection speed varies depending on the viscosity of the ink. The viscosity of the ink changes over long periods of operation of the inkjet recording device, and the ink ejection speed also changes accordingly.
  • an inkjet recording device that measures the ink ejection speed based on the ink viscosity will be described as an example. Note that the configuration of the inkjet recording device in this embodiment is the same as the inkjet recording device of the first embodiment described with reference to Figures 1, 2, and 5. Therefore, below, the components of the inkjet recording device will be described using the reference numbers in these figures, and detailed description of them will be omitted.
  • FIG. 9 is a flowchart showing the flow of the print position correction process in the second embodiment. The process shown in FIG. 9 is performed periodically at predetermined times while the inkjet recording device 1 is in operation.
  • the print control unit 10 causes the ink viscosity detection circuit 40 to guide the ink stored in the ink container 70 to the ink viscosity detection unit 90, where the ink viscosity is measured (S900).
  • the ink viscosity obtained by the ink viscosity detection circuit 40 using the ink viscosity detection unit 90 is stored in RAM 110 and maintained by RAM 110 (S910).
  • the print control unit 10 reads the ink viscosity obtained in the previous measurement, which is stored in RAM 110, and the ink viscosity obtained in the current measurement, and compares the two. Ink viscosity changes due to factors such as dilution of the ink when ink cleaning fluid mixes with the ink, and evaporation of solvents mixed in the ink. The print control unit 10 determines whether the ink viscosity has changed based on the comparison results. If it is determined that the ink viscosity has not changed, the process returns to step S900, and the ink viscosity is measured at the next timing (S920).
  • the print control unit 10 measures the ink ejection speed, obtains the results, and corrects the print position based on the obtained measurement results, similar to the processing in the first embodiment (S610, S620).
  • Figure 10 is a simplified perspective view of the printing system in the third embodiment.
  • a print inspection device 5 is connected to the inkjet recording device 1.
  • the print inspection device 5 has a camera 6 and a monitor 7, and inspects the content printed on the print substrate 3 by the inkjet recording device 1.
  • the camera 6 is an imaging means that reads images including the character string to be inspected.
  • the monitor 7 displays the image read by the camera 6 by the print inspection device 5, and is also used to set the conditions for the print inspection and display the inspection results.
  • Figure 11 is a schematic block diagram showing the configuration of the inkjet recording device 1 and the print inspection device 5.
  • the print inspection device 5 has an image input unit 51 that reads images input from the camera 6 by scanning them, etc.
  • the image read by the image input unit 51 is stored by the image storage unit 52 in a storage device such as a hard disk drive (HDD) (not shown).
  • the image processing unit 53 processes the images stored in the image storage unit 52 and inspects the print for misalignment and for print defects such as smudges or missing parts in the print content.
  • the ROM 55 stores various data used when the image processing unit 53 processes images.
  • the input/output unit 54 exchanges various information, including inspection results, with the inkjet recording device 1, and also displays the information on the monitor 7.
  • the inkjet recording device 1 has a configuration similar to that of the inkjet recording device 1 of the first embodiment shown in Figure 2. Information is exchanged between the inkjet recording device 1 and the print inspection device 5 via the interface 130 of the print control unit 10.
  • Figure 12 is a flowchart showing the flow of the print position correction process in the third embodiment.
  • the print inspection device 5 uses the camera 6 to capture the printed content, such as the character string printed on the print substrate 3, and the image input unit 51 acquires the image (S1200).
  • the image acquired by the image input unit 51 is stored in a storage device (not shown) by the image storage unit 52 (S1210).
  • the image processing unit 53 reads the image stored in the storage device by the image storage unit 52, processes the read image using data stored in ROM 55, and inspects the printed content for defects such as misalignment or missing characters, for example, by comparing it with a reference image previously stored in ROM 55 (S1230).
  • the print inspection device 5 waits for the arrival of the next print substrate and performs the inspection again (S1240). If a defect such as misalignment is found, the print inspection device 5 displays the result on the monitor 7 via the input/output unit 54. Furthermore, if the detected defect is a misalignment of characters, the print inspection device 5 notifies the inkjet recording device 1 of this result via the input/output unit 54 (S1250).
  • the print control unit 10 of the inkjet recording device 1 receives inspection results indicating a print position deviation from the print inspection device 5, it measures the ink ejection speed and corrects the print position according to the ink ejection speed, as in the first embodiment (S610, S620).
  • the inkjet recording device receives notification of the deviation in the print position from the print inspection device, measures the ink ejection speed without human intervention, and corrects the print position, thereby preventing a decline in print quality.
  • the above-described embodiment makes it possible to prevent degradation of print quality due to misalignment of the print position that can occur when the ink ejection speed of the inkjet recording device changes.
  • the above-described embodiments represent typical aspects of the present invention, and the present invention is not limited to these.
  • the measured ink ejection speed is stored in RAM, but it may also be stored in ROM. This makes it possible to continue operation after restarting by using previous measurement results, even if the power is cut off due to a suspension of operation, etc.
  • different triggers for measuring the ink ejection speed have been described as separate embodiments, but it is also possible to configure an embodiment by combining some or all of these.
  • Inkjet recording device 2 Print head 3: Printing object 5: Printing inspection device 6: Camera 7: Monitor 10: Printing control unit 26: Charge voltage detection sensor 30: Character signal generating circuit 40: Ink viscosity detection circuit 50: Charge voltage detection circuit 60: Panel 70: Ink containers 80, 81: Pump 90: Ink viscosity detection unit

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  • Engineering & Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Particle Formation And Scattering Control In Inkjet Printers (AREA)
  • Ink Jet (AREA)

Abstract

L'invention concerne un dispositif d'impression à jet d'encre comprenant : une buse (21) qui déverse de l'encre ; une électrode de charge électrique (22) qui charge électriquement l'encre déversée par la buse (21) ; une électrode de déviation (23) qui dévie l'encre chargée électriquement ; une unité de commande de tension de charge électrique (30) qui commande une tension de charge électrique appliquée à l'encre par l'électrode de charge électrique ; un capteur (26) destiné à obtenir le taux de débit de l'encre déversée par la buse ; et une unité de commande (10) qui commande l'unité de commande de tension de charge électrique (30) pour commander l'impression sur un objet sur lequel l'impression est effectuée. L'unité de commande (10) obtient le débit de l'encre déversée par la buse (21) à l'aide du capteur (26), et, sur la base du débit obtenu, commande un moment auquel charger électriquement l'encre par l'intermédiaire de l'électrode de charge électrique (22).
PCT/JP2024/021520 2024-06-13 2024-06-13 Dispositif d'impression à jet d'encre et son procédé de commande Pending WO2025258024A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP2024/021520 WO2025258024A1 (fr) 2024-06-13 2024-06-13 Dispositif d'impression à jet d'encre et son procédé de commande

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2024/021520 WO2025258024A1 (fr) 2024-06-13 2024-06-13 Dispositif d'impression à jet d'encre et son procédé de commande

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61227060A (ja) * 1985-04-01 1986-10-09 Ricoh Co Ltd 偏向制御インクジエツト記録装置
JPS6235853A (ja) * 1985-08-09 1987-02-16 Ricoh Co Ltd ドラム走査型インクジエツト記録装置
JPH0691976A (ja) * 1990-08-06 1994-04-05 Iris Graphics Inc インクジェット印刷機を校正する方法および装置
JP2002036595A (ja) * 2000-07-21 2002-02-05 Hitachi Ltd インクジェット記録装置
WO2010150370A1 (fr) * 2009-06-24 2010-12-29 株式会社日立産機システム Dispositif d'enregistrement à jet d'encre
CN105398218A (zh) * 2015-12-14 2016-03-16 上海美创力罗特维尔电子机械科技有限公司 一种喷码机喷印系统
WO2020031451A1 (fr) * 2018-08-10 2020-02-13 株式会社日立産機システム Dispositif d'inspection d'impression et dispositif d'impression à fonction d'inspection d'impression

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61227060A (ja) * 1985-04-01 1986-10-09 Ricoh Co Ltd 偏向制御インクジエツト記録装置
JPS6235853A (ja) * 1985-08-09 1987-02-16 Ricoh Co Ltd ドラム走査型インクジエツト記録装置
JPH0691976A (ja) * 1990-08-06 1994-04-05 Iris Graphics Inc インクジェット印刷機を校正する方法および装置
JP2002036595A (ja) * 2000-07-21 2002-02-05 Hitachi Ltd インクジェット記録装置
WO2010150370A1 (fr) * 2009-06-24 2010-12-29 株式会社日立産機システム Dispositif d'enregistrement à jet d'encre
CN105398218A (zh) * 2015-12-14 2016-03-16 上海美创力罗特维尔电子机械科技有限公司 一种喷码机喷印系统
WO2020031451A1 (fr) * 2018-08-10 2020-02-13 株式会社日立産機システム Dispositif d'inspection d'impression et dispositif d'impression à fonction d'inspection d'impression

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