WO2015114814A1 - インクジェット記録装置 - Google Patents

インクジェット記録装置 Download PDF

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Publication number
WO2015114814A1
WO2015114814A1 PCT/JP2014/052327 JP2014052327W WO2015114814A1 WO 2015114814 A1 WO2015114814 A1 WO 2015114814A1 JP 2014052327 W JP2014052327 W JP 2014052327W WO 2015114814 A1 WO2015114814 A1 WO 2015114814A1
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WO
WIPO (PCT)
Prior art keywords
ink
recording apparatus
cartridge
liquid container
electrode
Prior art date
Application number
PCT/JP2014/052327
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
崇博 有馬
雄彦 松下
直倫 吉田
原田　信浩
宮尾　明
Original Assignee
株式会社日立産機システム
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 株式会社日立産機システム filed Critical 株式会社日立産機システム
Priority to PCT/JP2014/052327 priority Critical patent/WO2015114814A1/ja
Priority to CN201480072298.5A priority patent/CN105916690B/zh
Priority to JP2015559704A priority patent/JP6360503B2/ja
Publication of WO2015114814A1 publication Critical patent/WO2015114814A1/ja

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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
    • B41J2/07—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
    • 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
    • B41J2/1721—Collecting waste ink; Collectors 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
    • B41J2/1752—Mounting within the printer
    • 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
    • B41J2/1752—Mounting within the printer
    • B41J2/17523—Ink connection
    • 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
    • B41J29/02—Framework
    • 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 present invention relates to an ink jet recording apparatus that continuously ejects ink particles and prints on a printing object, and more particularly to a cartridge type ink jet recording apparatus that replenishes ink and solvent.
  • Patent Document 1 Japanese Patent Laid-Open No. 11-245431
  • Patent Document 1 states that “The exchangeable liquid container is provided with a plug-in connector that is inserted into an adapter on the ink system side, a recess is formed around the connector, and the surface of the recess acts as a cam follower surface. Is provided with a convex portion, and a tip surface of the convex portion forms a cam surface that engages with the cam follower surface.When the liquid container is rotated, the container is separated from the adapter by the cooperation of the cam surface and the cam follower surface. It is described. (See summary)
  • An inkjet recording apparatus is a device that prints on a production line on a product that is continuously mass-produced, that is, a substrate. If the ink and solvent replenishment of the ink jet recording apparatus is delayed and the ink runs out and the printing is stopped, the production line is stopped and a large loss occurs.
  • An object of the present invention is to provide an ink jet recording apparatus capable of detecting the replacement timing of a cartridge with a simple configuration.
  • the present invention includes a plurality of means for solving the above-mentioned problems.
  • an ink jet recording apparatus provided with a liquid container containing ink or a solvent is provided in the liquid container.
  • a first pipe that allows the solvent to flow to the outside of the liquid container and a top surface of the liquid container are provided, and a cartridge liquid container of ink or solvent is connected to allow the liquid from the cartridge liquid container to flow.
  • a second pipe that flows inside the liquid container; and a liquid detection unit having a tip disposed between the lower end of the first pipe and the lower end of the second pipe in the liquid container. It is characterized by that.
  • FIG. 1 is an external perspective view of an ink jet recording apparatus according to an embodiment.
  • the perspective view which shows the use condition of an inkjet recording device is shown. It is the schematic which shows the principle of operation of an inkjet recording device. It is a conceptual diagram of the main body internal structure of an inkjet recording device.
  • route block diagram of the inkjet recording device concerning an Example is shown.
  • 1 is a functional block diagram of an ink jet recording apparatus.
  • 1 is a longitudinal sectional view of an ink refill cartridge of an ink jet recording apparatus.
  • 1 is a longitudinal sectional view of an auxiliary ink container according to Example 1.
  • FIG. FIG. 9 is a longitudinal sectional view showing a state where an ink cartridge is installed in the auxiliary ink container of FIG. 8.
  • FIG. 4 is a longitudinal sectional view of the auxiliary ink container in a state where the ink cartridge of Example 1 is empty.
  • FIG. 4 is a longitudinal sectional view of the auxiliary ink container in a state where the ink capacity of Example 1 is further reduced.
  • FIG. 3 is a path configuration diagram of an ink jet recording apparatus according to a second embodiment.
  • FIG. 6 is a longitudinal sectional view of an auxiliary ink container in a state where air in a cartridge is expanded in Example 2.
  • FIG. 6 is a longitudinal sectional view of an auxiliary ink container of Example 3.
  • FIG. 6 is a longitudinal sectional view of an auxiliary ink container in a state where a cartridge is installed in the auxiliary ink container of Example 3.
  • FIG. 5 is a longitudinal sectional view of an auxiliary ink container in a state where a cartridge according to Example 3 is empty.
  • assistant ink container of Example 3 became small is shown.
  • assistant ink container of Example 3 is shown.
  • the operation screen of Example 3 is shown.
  • FIG. 10 is a longitudinal sectional view of an auxiliary ink container in a state where air in a cartridge of Example 4 is expanded.
  • FIG. 10 is a longitudinal sectional view of an auxiliary ink container in a state where air in a cartridge of Example 4 is expanded.
  • FIG. 10 is a longitudinal sectional view of an auxiliary ink container in a state where air in a cartridge of Example 5 is expanded.
  • FIG. 10 is a longitudinal sectional view of an auxiliary ink container in a state where a cartridge of Example 6 is empty. The longitudinal cross-sectional view of the auxiliary ink container of the state which seems to run out of the liquid quantity of the auxiliary ink container of Example 6 is shown.
  • FIG. 1 is an external perspective view of the ink jet recording apparatus of the present invention.
  • the ink jet recording apparatus includes a recording apparatus main body 1, a print head 2 for printing on a product and the like, and a conduit 4 that supplies and collects ink and stores a tube and the like.
  • the apparatus main body 1 and the print head 2 are connected by a conduit 4.
  • the ink jet recording apparatus is installed in a production line in a factory where food and beverages are produced, the apparatus main body 1 is installed at a position where an administrator can operate, and the print head 2 is installed on a production line such as a belt conveyor 15. It is installed at a position where it can be close to the substrate 13 to be printed. Numbers and characters such as the expiration date are printed on the substrate 13.
  • a rotary encoder 16 that outputs a signal corresponding to the conveyance speed to the ink jet recording apparatus 400 to print with the same width regardless of the conveyance speed and a substrate to be printed are measured.
  • a print sensor 17 that outputs a signal for instructing printing to the inkjet recording apparatus 400 is installed, and each is connected to a control unit (not shown) in the apparatus main body 1.
  • the control unit controls the charge amount and charging timing of the ink particles 7 ⁇ / b> C ejected from the nozzles 8, while the print target 13 passes near the print head 2. Printing is performed by adhering the charged and deflected ink particles 7C to the substrate 13 to be printed.
  • the ink 7 ⁇ / b> A in the ink container 18 is sucked by the pump 24, is pressurized and sent out, becomes an ink column 7 ⁇ / b> B, and is ejected from the nozzle 8.
  • the nozzle 8 is provided with an electrostrictive element 9 that vibrates at a predetermined frequency when a voltage is applied.
  • the ink column 7B ejected from the nozzle 8 is made into particles by vibrating the ink at a predetermined frequency.
  • the number of ink particles 7C thus generated is determined by the frequency of the excitation voltage applied to the electrostrictive element 9, and is the same as the frequency.
  • the ink particles 7C can be charged by being applied by the charging electrode 11 that charges a voltage having a magnitude corresponding to the print information.
  • the ink particles 7 ⁇ / b> C charged by the charging electrode 11 fly in the electric field between the deflection electrodes 12.
  • the deflection electric field is formed between a high voltage electrode to which a high voltage of 5 to 6 kV is applied and a ground (GND) electrode installed, and the charged ink particles 7C receive a force proportional to the amount of charge. Deflected, and flies toward the substrate 13 to land. At that time, the landing position of the ink particle 7C changes in the deflection direction according to the amount of charge, and the production line 13 moves the printed material 13 in the direction orthogonal to the deflection direction, so that the ink particle 7C also moves in the direction orthogonal to the deflection direction.
  • Particles can be landed, and a character is composed of a plurality of landed particles for printing.
  • the ink particles 7C that have not been used for printing fly linearly between the deflection electrodes 12, are collected by the gutter 14 that collects the ink particles, and are then collected in the ink container 18 via a path.
  • the ink particles recovered by the gutter 14 are sent to the ink container 18 by the ink particle recovery pump 25.
  • FIG. 4 is a longitudinal sectional view of the ink jet recording apparatus.
  • electric parts such as a control circuit 300 and a power source 310 for supplying current to the control circuit are arranged, and an operation display is provided on the upper front surface.
  • Part 3 is arranged.
  • an auxiliary ink container 19 for replenishing ink into the ink container 18, an ink cartridge 51, and a solvent container 20 storing a solvent for adjusting ink concentration (see FIG. 5).
  • a solvent cartridge 52 (shown in FIG. 5) and the like are accommodated.
  • a space 620 on the back side of the lower part of the apparatus main body 1 stores circulation system control parts such as a flow path board 621, electromagnetic valves 34 to 39, pumps 24 to 27, and the like. 4 is connected to the print head 2.
  • the length of the conduit 4 is generally 4-6 m.
  • a pipe through which ink flows in and out and a high voltage power supply line and a control line for applying each electrode In addition, by opening and closing the door 600 on the lower front side of the apparatus main body 1, maintenance such as replacement work of the ink and solvent cartridges 51 and 52 can be facilitated.
  • FIG. 5 is a diagram illustrating the overall path configuration of the inkjet recording apparatus 400.
  • the ink jet recording apparatus 400 includes an apparatus main body 1, a print head 2, and a conduit 4 that connects the apparatus main body 1 and the print head 2.
  • the apparatus main body 1 includes an ink container 18 that holds the circulating ink 7A, and the ink container 18 reaches a reference liquid level that is an appropriate amount to hold the liquid in the container 18 inside.
  • the ink container 18 is connected to the viscosity measuring device 43 via the path 201 in order to grasp the viscosity of the ink 7A in the ink container 18.
  • the viscosity measuring device 43 is connected to an electromagnetic valve (for supply) 34 that opens and closes the path via a path 202, and the solenoid valve (for supply) 34 is used to suck and pump ink 7 ⁇ / b> A via the path 203. It is connected to a pump (for supply) 24 to be used.
  • the pump (for supply) 24 is connected via a path 204 to a filter (for supply) 28 that removes foreign matters mixed in the ink 7A.
  • the filter (for supply) 28 is connected to a pressure reducing valve 33 that adjusts the pressure to an appropriate pressure for printing the ink 7A pumped from the pump (for supply) 24 via the path 205, and the pressure reducing valve 33 is connected to the path.
  • a pressure gauge 31 for measuring the pressure of the ink 7 ⁇ / b> A supplied to the nozzles via 206 is arranged.
  • the pressure gauge 31 is connected to a nozzle 8 provided in the print head 2 and having a discharge port for discharging the ink 7A through a path 207 passing through the conduit 4.
  • the supply of ink and solvent can be switched.
  • a gutter 14 for capturing ink particles 7C that fly straight without being charged and deflected because they are not used for printing is disposed in the straight direction of the discharge port of the nozzle 8.
  • the gutter 14 is connected to a filter (for recovery) 29 that removes foreign matters mixed in the ink disposed in the main body 1 via a path 212 passing through the conduit 4. Is connected to a solenoid valve (for recovery) 35 that opens and closes the path via a path 213.
  • the electromagnetic valve (for recovery) 35 is connected to a pump (for recovery) 25 that sucks the ink particles 7C captured by the gutter 14 via the path 214, and the pump (for recovery) 25 is connected to the ink via the path 215.
  • the container 18 is connected.
  • the ink container 18 is connected to the exhaust path 217, and the exhaust path 217 communicates with the outside of the main body 1.
  • the apparatus main body 1 includes an auxiliary ink container 19 that holds ink for replenishment.
  • a cartridge (ink) 51 for replenishing ink is connected to the upper portion of the auxiliary ink container 19.
  • the auxiliary ink container 19 is connected to a solenoid valve 36 that opens and closes a path via a path 221, and the solenoid valve 36 is connected to a merging path 223 connected to the ink supply path 203 via a path 222. Further, since the auxiliary ink container 19 is connected to the outside of the apparatus main body via the path 236, it is in a state equivalent to atmospheric pressure.
  • the apparatus main body 1 is provided with a solvent container 20 for holding a solvent for solvent replenishment, and a cartridge (solvent) 52 for replenishing the solvent is connected to the upper part of the solvent container 20. It is connected via a path 231 to a pump (for solvent) 26 used for sucking and pumping the solvent.
  • the pump (for solvent) 26 is connected to an electromagnetic valve (for solvent) 37 in order to open and close the flow path via the path 232, and the electromagnetic valve (for solvent) 37 is connected to the ink container via the path 233. 18 is connected.
  • the solvent container 20 is connected to the outside of the machine via the path 237, it is in a state equivalent to atmospheric pressure.
  • the ink jet recording apparatus 400 includes a control unit 300 having an MPU.
  • the control unit 300 is connected to an operation display unit 3, nozzles 8 that form ink particles, and ink particles via a bus line 301.
  • the recording unit 302 stores a program for controlling the ink jet recording apparatus 400, and the control unit 300 is configured to control each part of the ink jet recording apparatus 400 based on this program.
  • the cartridge (ink) 51 includes a bottle 55 that can store about 500 ml of ink 7F, and a supply port 56 for supplying ink to the upper portion, and the ink supply port 56 has a connection portion with the auxiliary ink container 19. And a cover 57 for preventing the ink 7F from leaking to the outside. Since the cover 57 is configured to be turned upside down when installed in the auxiliary ink container 19, a thin PP (polypropylene) or a thin aluminum film is used.
  • a thin PP polypropylene
  • FIG. 8 is a longitudinal sectional view of the auxiliary ink container 19
  • FIG. 9 is a longitudinal sectional view of the auxiliary ink container 19 in a state where the cartridge (ink) 51 is installed.
  • the auxiliary ink container 19 extends to the outside of the liquid reservoir 61 that holds the ink 7 ⁇ / b> G, the top surface portion 61 ⁇ / b> D that serves as a lid for sealing the liquid reservoir 61, and the liquid reservoir 61.
  • a convex tube portion 61A for connecting to the cartridge 51 a concave tube portion 61B disposed below the convex tube portion 61A and extending inside the liquid storage portion 61, and a level as a detection portion for detecting the replacement timing of the cartridge
  • a sensor connection portion 61C for installing a connection block 63 on which sensor electrodes and the like are installed.
  • the convex-tube part 61A and the concave-tube part 61B may be formed integrally.
  • the sensor connection portion 61C includes a connection block 63 via a packing 62 at the top, and the connection block 63 is fixed by a fixed lid 64.
  • the connection block 63 is connected to the path 221 and has a suction pipe 66 dipped in the ink 7 ⁇ / b> G held at the liquid reservoir 61, and an air release pipe that is connected to the path 236 and has a tip above the electrode (over) 71. 67.
  • connection block 63 is dipped in the ink 7 ⁇ / b> G held at the liquid storage unit 61 at the tip, and is shorter than the electrode (GND) 68 for detecting the lower limit of the remaining amount of ink in the auxiliary ink container, and the electrode (GND) 68.
  • An electrode (LOW) 69, and an electrode (standard) 70A arranged so that the tip is positioned between the lower end portion of the ink suction pipe 66 and the lower end portion (standard level line 74) of the concave tube portion 61B.
  • an electrode (over) 71 having a tip disposed above the standard level line 74.
  • the convex tube portion 61A of the auxiliary ink container 19 has a role of breaking through the cover 57 when the cartridge 51 is installed, the end surface thereof is more easily broken when it is cut obliquely. Thereafter, the outer periphery of the convex tube portion 61 ⁇ / b> A is sealed with the packing 58 between the supply port 55 ⁇ / b> A of the cartridge 51.
  • the ink 7 ⁇ / b> F in the cartridge 51 passes through the convex tube portion 61 ⁇ / b> A and the concave tube portion 61 ⁇ / b> B and is held in the liquid storage portion 61 in the auxiliary ink container 19.
  • the inner diameters of the convex tube portion 61A and the concave tube portion 61B are desirably 8 mm or more.
  • the liquid level 75 ⁇ / b> A of the ink 7 ⁇ / b> G held in the liquid storage unit 61 is substantially constant and stable at the standard level line 74 as long as the ink 7 ⁇ / b> F remains in the cartridge 51.
  • FIGS. 9 to 11 are longitudinal sectional views showing a state in which the cartridge (ink) 51 is installed upside down on the auxiliary ink container 19 and the ink is replenished, and the liquid of the ink 7G in the auxiliary ink container 19 is shown. It shows how the surface 75 changes.
  • the liquid level 75A of the ink 7G in the auxiliary ink container 19 with the ink 7F remaining in the cartridge 51 is stabilized at the position of the standard level line 74 shown in FIG. That is, the ink jet recording apparatus 400 consumes the ink 7G by printing or the like, but each time the ink 7F in the cartridge is replenished to the auxiliary ink container 19, so that the ink 7F remains in the cartridge 51.
  • the position of the liquid level 75A is substantially constant without greatly moving up and down, and maintains a stable position. At this time, the tip of the electrode (standard) 70 is in contact with the ink 7G.
  • the electrodes in the auxiliary ink container 19 are the longest electrode (GND) 68, the longest electrode (LOW) 69 after the electrode (GND) 68, and the longest electrode (standard) 70 after the electrode (LOW) 69.
  • the shortest electrode (over) 71 is arranged, and electric wires 68A, 69A, 70A, 71A are connected to each electrode.
  • the electrodes are shown in parentheses for easy explanation.
  • the electrode (GND) 68 is a reference electrode for detecting a conductive state with an external electrode, that is, the presence or absence of ink in the auxiliary ink container, and GND means a ground.
  • the electrode (LOW) 69 is for detecting a state in which the ink in the auxiliary ink container has decreased and the remaining amount of ink in the auxiliary ink container has decreased.
  • the electrode (standard) 70 is for detecting the replacement timing of the cartridge 51, and the height of the liquid level is referred to as a standard.
  • the electrode (over) 71 detects a liquid level higher than the standard height when ink is replenished from the cartridge 51.
  • a galvanometer or the like can be used to select two wires connected to the electrodes and connect them to the galvanometer, and the conduction state can be observed depending on the presence or absence of current. . That is, the presence or absence of ink between the electrodes can be checked.
  • the electric wires 68A and 70A of the electrode (GND) 68 and the electrode (standard) 70 are connected to the galvanometer, and when the galvanometer is viewed, the tip of the electrode (standard) 70 is in contact with the ink 7G. It can be seen that a current flows through the ammeter, and the liquid level of the ink 7G in the auxiliary ink container is the position of the electrode (standard) 70.
  • This state is a state in which ink is replenished from the cartridge 51 to the auxiliary ink container, or a state after completion of replenishment but before the timing for cartridge replacement.
  • FIG. 10 shows a state in which the ink 7F in the cartridge 51 runs out and is empty.
  • the liquid level 75A is lowered, and the electrode (standard) 70 and the liquid level 75B are separated.
  • the electric wires 68A and 70A of the electrode (GND) 68 and the electrode (standard) 70 are connected to the galvanometer, and the galvanometer shows that the electrode (standard) is not in contact with the ink 7G.
  • the liquid level 75B of the ink 7G is lower than the electrode (standard) 70, the cartridge 51 is empty, and it can be detected that it is the replacement timing.
  • the electrode 70 is set at a position slightly lower than the lower end of the concave tube portion 61B, the cartridge replacement timing can be detected immediately after the inside of the cartridge is emptied.
  • the electrode (LOW) 69 is immersed in the ink 7G, so the galvanometer It can be seen that the liquid level 75B of the ink 7G is higher than the electrode (LOW) 69.
  • the control unit 300 of the ink jet recording apparatus detects that the ink 7F in the cartridge 51 has run out, and the operation display unit 3 displays, for example, “The cartridge is empty. Replace the cartridge. Please send a message like "Please.”
  • a speaker can be mounted to send a message by voice.
  • the ink jet recording apparatus 400 can prompt the administrator to replace the cartridge and prevent printing defects due to the ink 7G in the auxiliary ink container 19 becoming so small that it cannot be supplied from the ink suction pipe. Can do.
  • FIG. 11 a state in which the liquid level 75C of the auxiliary ink container 19 is lower than the tip of the electrode (LOW) 69 is shown in FIG.
  • the liquid level 75 ⁇ / b> C is in a state where the amount of ink 7 ⁇ / b> G in the auxiliary ink container 19 decreases and is separated from the electrode (LOW) 69.
  • the electric wires 68A and 69A of the electrode (GND) 68 and the electrode (LOW) 69 are connected to the galvanometer, and when the galvanometer is viewed, the electrode (LOW) 69 is in contact with the ink 7G. Since no current flows through the galvanometer, it can be detected that the liquid level 75C of the ink 7G is lower than the electrode (LOW) 69.
  • the ink jet recording apparatus 400 can output a message such as “Remaining ink in the auxiliary ink container is very short. Replace the cartridge in a hurry” on the operation display unit 3. As a result, the ink jet recording apparatus 400 can warn and prompt the administrator to replace the cartridge, and can prevent printing defects caused by the ink 7G in the auxiliary ink container 19 becoming so small that it cannot be supplied from the ink suction pipe. Can be prevented.
  • the first embodiment with a simple configuration, it is possible to detect that the ink liquid in the cartridge 51 has run out and it is time to replace the cartridge, and to announce to the administrator to replace the cartridge. Therefore, it is possible to prevent the production line from being stopped due to defective printing.
  • Example 2 of the present invention will be described with reference to the drawings.
  • description about the part which is common in Example 1 is abbreviate
  • the path configuration of the inkjet recording apparatus 410 according to the second embodiment will be described with reference to FIG.
  • FIG. 12 is a diagram showing the overall path configuration of the inkjet recording apparatus 410, and the atmosphere opening path of the auxiliary ink container 19 will be described.
  • the ink jet recording apparatus main body 1 includes an auxiliary ink container 19 that holds ink for replenishment of the ink container 18.
  • the auxiliary ink container 19 is an electromagnetic valve that opens and closes a path via a path 241. 38.
  • the electromagnetic valve 38 is connected to a path 242 connected to the outside of the inkjet recording apparatus.
  • the auxiliary ink container 19 has an internal pressure equivalent to the atmospheric pressure when the electromagnetic valve 38 is opened.
  • the apparatus main body 1 is provided with a solvent container 20 that holds a solvent for solvent replenishment, and the solvent container 20 is connected to an electromagnetic valve 39 that opens and closes a path via a path 243.
  • the electromagnetic valve 39 is connected to a path 244 connected to the outside of the inkjet recording apparatus.
  • the solvent container 20 has an internal pressure equivalent to atmospheric pressure.
  • FIG. 13 is a diagram illustrating a state where the temperature in the ink jet recording apparatus is increased and the gas 73 in the cartridge 51 is expanded in a state where the cartridge 51 is installed in the auxiliary ink container 19 illustrated in FIG. 9.
  • the gas 73 expands and the volume increases inside the cartridge 51, the pressure inside the cartridge 51 rises, and the liquid level in the cartridge 51 is pushed down to reach the liquid level 76B. .
  • the liquid level inside the auxiliary ink container 19 rises as much as the liquid level in the cartridge 51 is pushed down, so that the liquid level 75D is brought into contact with the electrode (over) 71.
  • the ink 7G may flow out of the apparatus through the path 241 and leak out, and the vicinity of the inkjet recording apparatus 410 may be contaminated with ink. Therefore, when the electric wires 68A and 71A of the electrode (GND) 68 and the electrode (over) 71 are connected to the galvanometer and current flows through the galvanometer, the liquid level 75D of the ink 7G is placed on the electrode (over). It can be detected that the ink has reached, and the control unit 300 can close the electromagnetic valve 38 to prevent the ink 7G from flowing out of the apparatus.
  • the configuration of the second embodiment it is possible to prevent the ink from leaking from the auxiliary ink container 19 even when the gas in the cartridge 51 expands.
  • FIG. 14 shows a longitudinal sectional view of the configuration of the auxiliary ink container 19B of the ink jet recording apparatus according to the third embodiment.
  • FIG. 14 is a longitudinal sectional view showing a state in which the ink is changed in the auxiliary ink container by installing a cartridge in the auxiliary ink container 19B. It is shown in FIGS.
  • the auxiliary ink container 19B shown in FIG. 4 has a connection block 63 that connects the top surface portion 61D of the liquid storage section 61 of the first embodiment with electrodes and the like. 14 is that the distance between the top surface portion 81D of the liquid storage portion 81 in FIG. 14 of the third embodiment and the connection block 83 that connects the electrodes and the like, that is, the upper side wall 81E extends upward from the top surface portion 81D. Is a different point.
  • the auxiliary ink container 19B of the third embodiment extends to the outside of the liquid storage part 81 that holds the ink 7G, the top surface part 81D that serves as a lid for sealing the liquid storage part, and the liquid storage part 81.
  • An extended upper side wall 81E and a sensor connection portion 81C for installing a connection block 83 provided with level sensor electrodes and the like are provided.
  • the sensor connection portion 81C includes a connection block 83 via a packing 82 at the top, and the connection block 83 is fixed by a fixed lid 84.
  • the connection block 83 includes a suction pipe 86 that is connected to the path 221 and is dipped in the ink 7G whose tip is held in the liquid storage unit 81, and an air release pipe 87 that is connected to the path 236 and above the upper side wall 81E. I have.
  • the electrodes arranged in the connection block 83 are the electrodes (GND) 88 and electrodes (LOW1) 89 having a length up to the vicinity of the bottom surface of the liquid storage unit 81 in the order of the length.
  • the electrode (LOW2) 90 and the electrode (standard) 91 are arranged.
  • the length of the four electrodes is obtained by dividing the difference between the lengths of the electrode (GND) 88 and the electrode (standard) 91 into approximately three equal parts, and the electrode (LOW2) 90 is 3 from the electrode (standard) 91.
  • the length of the electrode (LOW1) 89 is set to be approximately 2/3 longer than the electrode (standard) 91 by increasing the length of the electrode by approximately 1/3. This length can be set arbitrarily.
  • the tip of the electrode (standard) 91 is positioned between the lower end portion of the ink suction pipe 86 and the lower end portion of the concave tube portion 81B. At this time, if the position of the tip of the electrode (standard) 91 is set to a position slightly lower than the lower end of the concave tube portion 81B, the cartridge replacement timing can be detected immediately after the inside of the cartridge is empty.
  • the convex tube portion 81A of the auxiliary ink container 19B has a role of breaking through the cover 57 when the cartridge 51 is installed. Thereafter, the outer periphery of the convex tube portion 81 ⁇ / b> A is sealed with the packing 58 between the supply port 55 ⁇ / b> A of the cartridge 51.
  • the ink 7F in the cartridge 51 passes through the convex tube portion 81A and the concave tube portion 81B and is held in the liquid storage portion 81 in the auxiliary ink container 19B.
  • the inner diameters of the convex tube portion 81A and the concave tube portion 81B are 8 mm or more in diameter.
  • the liquid level 76A of the ink 7G held in the liquid storage unit 81 becomes substantially constant and stable at the standard level line 94 when the ink 7F remains inside the cartridge 51.
  • FIG. 15 shows a state where the ink replenishing cartridge 51 is installed in the auxiliary ink container 19B of the third embodiment, and the ink replenishing operation will be described.
  • FIG. 15 is a longitudinal sectional view showing a state of the auxiliary ink container 19B in a state where the ink 7F remains in the cartridge 51.
  • the liquid level 95A of the ink 7G in the auxiliary ink container 19B is substantially constant and stable at the position of the standard level line 94.
  • the ink 7F in the cartridge is replenished each time, and as long as the ink 7F remains in the cartridge 51, the liquid level 95A of the ink 7G in the auxiliary ink container 19B remains.
  • the position does not vary greatly and is almost constant and stable.
  • the tip of the electrode (standard) 91 is in contact with the ink 7G in the auxiliary ink container.
  • the electrode in the configuration of Example 3 will be described.
  • the electrode (GND) 88, the electrode (LOW1) 89, the electrode (LOW2) 90, and the electrode (standard) 91 are disposed in the auxiliary ink container 19B.
  • electric wires 88A, 89A, 90A and 91A are connected to the respective electrodes.
  • the level of the ink 7G in the auxiliary ink container 19B is adjusted by using a galvanometer or the like in the same manner as in Example 1 and checking the conduction state between the electrode (GND) 88 and the external electrode. It can be detected, and the replacement timing of the cartridge 51 can also be detected.
  • the electric wires 88A and 91A of the electrode (GND) 88 and the electrode (standard) 91 are connected to a galvanometer (not shown). Since the tip of is in contact with the ink 7G, a current flows through the galvanometer, and it can be detected that the liquid level 95A of the ink 7G is at the position of the electrode (standard) 91.
  • FIG. 16 shows a state where the liquid level 95B of the ink 7G in the auxiliary ink container 19B is between the electrode (standard) 91 and the electrode (LOW2) 90.
  • the electrode (standard) 91 is not in contact with the ink 7G. It can be seen that no current flows through the galvanometer, and the liquid level 95B is lower than the electrode (standard) 91. Further, in this state, since the ink level 95B is lower than the electrode (standard) 91, it is understood that it is the replacement timing of the cartridge 51.
  • the electrode (LOW2) 90 is immersed in ink. It can be seen that a current flows through the liquid surface 95B of the ink 7G between the electrode (LOW2) 90 and the electrode (standard) 91.
  • FIG. 17 shows a state where the liquid level 95B of the ink 7G in the auxiliary ink container 19B is between the electrode (LOW1) 89 and the electrode (LOW2) 90.
  • the electrode (LOW2) 90 is not in contact with the ink 7G. It can be seen that no current flows through the galvanometer, and the liquid level 95C of the ink 7G is lower than the electrode (LOW2) 90.
  • the electrode (LOW1) 89 is immersed in the ink 7G. It can be seen that a current flows through the meter, and the liquid level 95C of the ink 7G is between the electrode (LOW1) 89 and the electrode (LOW2) 90.
  • FIG. 18 shows a state where the liquid level 95B of the ink 7G in the auxiliary ink container 19B is between the electrode (GND) 88 and the electrode (LOW1) 89.
  • the electrode (LOW1) 89 is not in contact with the ink 7G. It can be seen that no current flows through the galvanometer, and the liquid level 95C of the ink 7G is lower than the electrode (LOW1) 89.
  • FIGS. 15 to 18 show the state of the process of ink replenishment to the auxiliary ink container and the decrease of the ink.
  • FIGS. 19 to 20 show examples of the screen display in each state.
  • the screen display indicates an operation display of the ink jet recording apparatus.
  • the message is displayed on the operation display unit 3 of the ink jet recording apparatus and announced to the print manager.
  • the message can also be announced by voice using a speaker (not shown).
  • FIG. 19 shows an example of an operation screen displayed on the operation display unit 3 of the ink jet recording apparatus.
  • the operation screen shows whether the cartridge (ink) 51 can be replaced at the upper right of the screen, the ink container remaining amount display portion 321 indicating the remaining amount of ink in the auxiliary ink container 19, and whether the cartridge (solvent) 52 can be replaced.
  • a solvent container remaining amount display section 322 showing the remaining solvent amount in the solvent container 20 is displayed.
  • the operation screen can display a message, an abnormality / alarm, on a message display unit 323 provided at the bottom of the screen.
  • FIG. 20 shows an example of the screen display. This is the content displayed on the ink container remaining amount display unit 321 or the solvent container remaining amount display unit 322.
  • FIG. 20C shows a liquid level 95B of the ink 7G of the auxiliary ink container 19B shown in FIG. 16 of the third embodiment between the electrode (LOW2) 90 and the electrode (standard) 91, and the cartridge 51 is In the icon display in the empty state, the message display unit 323 announces “Cartridge is empty. Cartridge can be replaced”.
  • FIG. 20D shows an icon display when the liquid level 95B of the ink 7G of the auxiliary ink container 19B shown in FIG. 17 of the third embodiment is between the electrode (LOW1) 89 and the electrode (LOW2) 90. Is shown.
  • FIG. 20E shows an icon display when the liquid level 95B of the ink 7G of the auxiliary ink container 19B shown in FIG. 18 of the third embodiment is between the electrode (GND) 88 and the electrode (LOW1) 89.
  • the message display unit 323 announces “Insufficient ink. Please hurry and replace the cartridge.” To inform that it is urgent. In this case, a warning may be given by flashing the screen.
  • a certain time for example, 24 hours
  • the ink supply from the ink container is stopped in order to prevent the apparatus from continuing to operate without ink.
  • an icon is displayed as shown in FIG. 20 (f), which indicates that the ink in the auxiliary ink container 19 is insufficient.
  • replenishment of ink has been described with respect to Examples 1 to 3, replenishment of solvent shown in FIGS. 5 and 12 is performed in the same manner as ink.
  • the ink in the cartridge is exhausted by the configuration of the third embodiment, the replacement timing can be detected, and the replacement of the cartridge can be announced to the print manager.
  • Example 4 shows a state in which the gas in the cartridge expands due to a temperature rise in the ink jet recording apparatus when the cartridge is installed and ink is replenished in the configuration of the auxiliary ink container shown in FIG. 14 of Example 3. 21.
  • the gas 73 expands and the volume increases inside the cartridge 51
  • the pressure inside the cartridge 51 rises, the liquid level of the ink in the cartridge is pushed down, and the liquid level 76B is reached. It becomes.
  • the liquid level inside the auxiliary ink container 19B rises as much as the liquid level in the cartridge 51 is pushed down, so that it flows into the space surrounded by the upper side wall 81E and enters the state of the liquid level 95E.
  • the space surrounded by the upper side wall 81E secures a volume corresponding to the liquid capacity of the cartridge 73. Therefore, even when the gas 73 in the cartridge 51 expands, the liquid level 95E does not reach the atmosphere release pipe 87.
  • the ink in the cartridge is exhausted by the configuration of the fourth embodiment, the replacement timing can be detected, and the replacement of the cartridge can be announced to the print manager.
  • the ink can be prevented from leaking from the auxiliary ink container.
  • the configuration does not use a solenoid valve, it is not necessary to enlarge the entire container, and an ink jet recording apparatus that can realize space saving can be provided.
  • the gas 73 expands and its volume increases, so that the pressure inside the cartridge 51 rises and the ink level in the cartridge is pushed down.
  • the liquid level inside the auxiliary ink container 19C rises by the amount that the liquid level in the cartridge 51 is pushed down, so that the ink flows into the space above the lower end of the concave tube portion 61B, and the state of the liquid level 77A. Become. However, since the volume of the space between the lower end portion of the concave tube portion 61B and the top surface portion 61E has a container shape larger than the ink capacity of the cartridge 51, even when the gas 73 in the cartridge 51 expands, the liquid level 77A The air release pipe 67 is not reached.
  • the ink in the cartridge is exhausted by the configuration of the fifth embodiment, the replacement timing can be detected, and the replacement of the cartridge can be announced to the print manager.
  • an ink jet recording apparatus that prevents ink from leaking out from the auxiliary ink container even when the gas at the time of ink replenishment in the cartridge expands with a simple container shape is provided. Can do.
  • FIG. 23 shows a vertical cross-sectional view of the auxiliary ink container 19D in a state where the cartridge is empty
  • FIG. 24 shows a vertical cross-sectional view of the auxiliary ink container in a state where the liquid amount of the auxiliary ink container is likely to disappear.
  • the auxiliary ink container 19D includes a float sensor 100 for detecting that the ink liquid level has fallen below a certain level. The float sensor 100 is assembled and fixed to the connection block 83.
  • the float sensor 100 includes a float support rod 101 extending from the connection block 83 toward the liquid reservoir 81, a float A102 for detecting that the liquid level 95B has fallen below the standard level line 94, and a float A102 that is more than necessary.
  • the float sensor 100 detects that the liquid level 95B is lower than the standard level line 94 by the float A102 being lowered in conjunction with the liquid level. That is, it can be seen that the cartridge 51 is empty.
  • the float sensor 100 detects that the liquid level 95D has reached the bottom of the liquid storage unit 81 by lowering the float B103 in conjunction with the liquid level. That is, it can be seen that the ink amount in the auxiliary ink container 19D is very small.
  • the container structure in the present embodiment can also be used for the solvent container 20.
  • the configuration of the sixth embodiment as described above it is possible to detect and announce the cartridge replacement timing. Also, even when the gas in the cartridge when the ink is refilled expands, the ink can be prevented from leaking out from the auxiliary ink container, and the space in the apparatus can be used effectively, so that the ink-jet recording can realize space saving. An apparatus can be provided. Furthermore, when a float sensor is used, it is not necessary to mix a conductive material with ink or a solvent, so that the cost of ink can be reduced.
  • Electric wire LOW2
  • 91 ... Electrode (standard) 91A
  • Electric wire standard
  • 91A ... Electric wire (standard)
  • 73 ... Gas
  • 94 ... Standard level wire

Landscapes

  • Ink Jet (AREA)
  • Accessory Devices And Overall Control Thereof (AREA)
PCT/JP2014/052327 2014-01-31 2014-01-31 インクジェット記録装置 WO2015114814A1 (ja)

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JP2017132166A (ja) * 2016-01-29 2017-08-03 株式会社日立産機システム インクジェット記録装置およびその制御方法
JP2018171850A (ja) * 2017-03-31 2018-11-08 ブラザー工業株式会社 画像記録装置
JP2019130874A (ja) * 2018-02-02 2019-08-08 株式会社リコー 液体収容容器、液体を吐出する装置
JP2019177600A (ja) * 2018-03-30 2019-10-17 ブラザー工業株式会社 液体排出装置
JP2020023180A (ja) * 2018-08-07 2020-02-13 キヤノン株式会社 記録装置、制御装置及び制御方法
WO2023058267A1 (ja) * 2021-10-04 2023-04-13 株式会社日立産機システム インクジェット記録装置およびその制御方法並びにインクジェット記録装置の監視システム

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JP7013156B2 (ja) * 2017-07-21 2022-01-31 キヤノン株式会社 液体吐出装置、液体残量の管理方法、およびプログラム
JP7073768B2 (ja) * 2018-02-13 2022-05-24 ブラザー工業株式会社 制御装置及びプログラム

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JP2017132166A (ja) * 2016-01-29 2017-08-03 株式会社日立産機システム インクジェット記録装置およびその制御方法
JP2018171850A (ja) * 2017-03-31 2018-11-08 ブラザー工業株式会社 画像記録装置
JP2019130874A (ja) * 2018-02-02 2019-08-08 株式会社リコー 液体収容容器、液体を吐出する装置
JP6992559B2 (ja) 2018-02-02 2022-01-13 株式会社リコー 液体収容容器、液体を吐出する装置
JP2019177600A (ja) * 2018-03-30 2019-10-17 ブラザー工業株式会社 液体排出装置
JP7180099B2 (ja) 2018-03-30 2022-11-30 ブラザー工業株式会社 液体排出装置
JP2020023180A (ja) * 2018-08-07 2020-02-13 キヤノン株式会社 記録装置、制御装置及び制御方法
JP7418103B2 (ja) 2018-08-07 2024-01-19 キヤノン株式会社 記録装置、制御装置及び制御方法
WO2023058267A1 (ja) * 2021-10-04 2023-04-13 株式会社日立産機システム インクジェット記録装置およびその制御方法並びにインクジェット記録装置の監視システム

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