CN111038108B

CN111038108B - Ink box storage device for ink-jet printing and storage method thereof

Info

Publication number: CN111038108B
Application number: CN201911254580.6A
Authority: CN
Inventors: 宋媛媛
Original assignee: TCL Huaxing Photoelectric Technology Co Ltd
Current assignee: TCL Huaxing Photoelectric Technology Co Ltd
Priority date: 2019-12-10
Filing date: 2019-12-10
Publication date: 2021-11-23
Anticipated expiration: 2039-12-10
Also published as: CN111038108A

Abstract

A storage device of an ink box for ink-jet printing comprises a sealing cavity, a fixing unit, a liquid recovery unit, a flow control module and a computer system in communication connection with the flow control module. According to the storage device of the ink box for ink-jet printing, on one hand, the ink can be prevented from being subjected to cross contamination under the atmosphere of protective gas, and the service life and the stability of physicochemical properties of the ink during the storage period are kept; on the other hand, the ink recovery and the ejection function can be ensured to be normal, so that the nozzle blockage caused by long-term placement of the ink box is avoided.

Description

Ink box storage device for ink-jet printing and storage method thereof

Technical Field

The application relates to the field of ink-jet printing, in particular to a storage device and a storage method of an ink box for ink-jet printing.

Background

With the development of the OLED (Organic Light-Emitting Diode) technology, the inkjet printing technology has attracted much attention in the industry due to its advantages of high material utilization rate and low production cost in the process of manufacturing the OLED device. In the OLED inkjet printing technology, the adjustment of the film thickness and the photoelectric characteristic is achieved by adjusting the type, concentration, volume, and the like of the printed ink, and thus inks of different concentrations and types are required to perform the adjustment of the printing process. In order to avoid cross contamination among inks, the inks with different concentrations and types are usually filled in different ink boxes, so that the storage device of the ink box is very important for protecting the ink performance, but the existing ink box has the phenomenon of nozzle blockage after being placed for a long time, and further the performance of the ink box is influenced.

Disclosure of Invention

The application provides a storage device of ink cartridge for ink-jet printing to solve the problem that the nozzle is blocked and the performance of the ink cartridge is influenced due to long-term placement of the existing ink cartridge.

In order to solve the above problems, the technical solution provided by the present application is as follows:

the application provides a storage device of an ink box for ink-jet printing, which comprises a sealing cavity, a fixing unit, a liquid recovery unit, a flow control module and a computer system, wherein the fixing unit is arranged in the sealing cavity and used for fixing the ink box; the liquid recovery unit is arranged in the sealing cavity and used for recovering ink dripped from the ink box; the flow control module is connected with the ink box to control the ejection amount of the ink box; and the computer system is in communication connection with the flow control module.

In at least one embodiment of the present application, the storage device further comprises a transfer chamber disposed proximate to the sealed chamber.

In at least one embodiment of the present application, the transfer chamber includes a first chamber door in communication with an exterior of the sealed chamber and a second chamber door in communication with an interior of the sealed chamber.

In at least one embodiment of the present application, a liquid level sensor is disposed on the ink cartridge, and the computer system is communicatively coupled to the liquid level sensor.

In at least one embodiment of the present application, the storage device further includes a voltage control unit connected to the ink cartridge, and the voltage control unit is configured to control a spitting frequency of the ink cartridge.

In at least one embodiment of the present application, the flow control module includes a pressure regulating valve, a gas supply conduit connecting the pressure regulating valve, and a gas supply device connecting the gas supply conduit.

In at least one embodiment of the present application, the pressure regulating valve is coupled to the ink cartridge, and the pressure regulating valve is in communication with the computer system.

In at least one embodiment of the present application, a glove is disposed over the sealed cavity.

The application also provides a storage method of the ink box for ink-jet printing, which comprises the following steps:

s10, providing a storage device of ink box for ink-jet printing, the storage device comprises a sealed cavity, a fixing unit and a liquid recovery unit which are arranged in the sealed cavity, a flow control module and a computer system which is connected with the flow control module in a communication way;

s20, filling protective gas into the sealing cavity;

s30, fixing the ink cartridge to the fixing unit;

s40, connecting the flow control module to the ink cartridge;

s50, inputting preset values of the pressure and the liquid level of the ink box on the computer system;

and S60, controlling the ink box to be in a continuous spraying state by the computer system, and monitoring and feedback-adjusting the pressure and the liquid level of the ink box in real time.

In at least one embodiment of the present application, the S30 includes: cleaning and drying the conversion cavity; placing the ink cartridge in the transfer chamber; filling the conversion cavity with the same protective gas as the sealing cavity; and moving the ink box out of the conversion cavity and fixing the ink box on the fixing unit.

The beneficial effect of this application does: according to the storage device of the ink box for ink-jet printing, on one hand, the ink can be prevented from being subjected to cross contamination under the atmosphere of protective gas, and the service life and the stability of physicochemical properties of the ink during the storage period are kept; on the other hand, the ink recovery and the ejection function can be ensured to be normal, so that the nozzle blockage caused by long-term placement of the ink box is avoided.

Drawings

In order to illustrate the embodiments or the technical solutions in the prior art more clearly, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for a person skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a memory device according to an embodiment of the present application;

FIG. 2 is a schematic diagram of another structure of a memory device according to an embodiment of the present application;

FIG. 3 is a schematic view of the structure of an ink cartridge according to an embodiment of the present application;

FIG. 4 is a flowchart illustrating steps of a method of storing an ink cartridge according to an embodiment of the present application;

FIG. 5 is a schematic block diagram of a computer system for controlling ink cartridge ejection volume according to an embodiment of the present disclosure.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The following disclosure provides many different embodiments or examples for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

This application is to the storage device of current ink jet printing ink horn to solve current ink horn and because long-term placing, appear the phenomenon that the nozzle blockked up, and then influence the problem of ink horn performance, this defect can be solved to this embodiment.

As shown in fig. 1 and 3, the present embodiment provides a storage device 100 of an ink cartridge for inkjet printing, including a sealing chamber 10, a fixing unit 20, a liquid recovery unit 30, a flow control module 50, and a computer system 40.

The fixing unit 20 is disposed in the sealing chamber 10, and is used for supporting and fixing the ink cartridge 200 to be stored; the liquid recovery unit 30 is disposed in the sealed chamber 10 and is used for collecting ink ejected from the ink cartridge 200; the flow control module 50 is connected to the ink cartridge, and the flow control module 50 is used for controlling the ink discharge amount of the ink cartridge 200; the computer system 40 is in communication connection with the flow control module 50 and the ink cartridge 200, and the computer system 40 is used for monitoring and feedback-adjusting the ink liquid level and the ink pressure of the ink cartridge 200, so that the nozzle 210 of the ink cartridge 200 is always in a state of jetting a small amount of ink in the storage process, the nozzle is prevented from being blocked, and the stability of the storage function of the ink cartridge is improved.

As shown in fig. 1, the sealed chamber 10 is filled with a protective gas, such as nitrogen, argon, or other inert gas, to protect the ink cartridge 200 and the ink in the ink cartridge 200 that need to be stored for a long time.

The liquid recovery unit 30 is disposed below the ink cartridge 200 to facilitate recovery of ink dropped from the ink cartridge 200, and since the inside of the sealing chamber is always filled with the protective gas, the recovered ink is not contaminated and can be recycled, and when the liquid level of the ink cartridge 200 is low, the recovered ink can be added into the ink cartridge 200 again.

The fixing unit 20 includes a hanging device 21, the hanging device 21 is horizontally placed above the liquid recovery unit 30, a plurality of fixing members 22 are arranged at intervals on the hanging device, and the fixing members 22 can slide on the hanging device. One of the fixing members 22 is detachably connected to one of the ink cartridges 200. The liquid recovery unit 30 may be disposed individually for one ink cartridge 200 or may be disposed for a plurality of ink cartridges 200.

Specifically, the fixing member 22 is detachably coupled to the top of the ink cartridge 200, and the fixing member 22 may be a hook. In other embodiments, the fixing member 22 may be detachably coupled to a side or a bottom of the ink cartridge 200, which is not limited herein.

The number of the ink cartridges stored in the storage device is 1-20.

In other embodiments, the number of the fixing units 20 may be plural, the fixing units 20 may have other structures, such as a support rod vertically disposed, and one fixing unit 20 may be used to fix one ink cartridge 200.

As shown in FIG. 5, the ink cartridge 200 is provided with a liquid level sensor 220, and the liquid level sensor 220 is communicatively connected to the computer system 40. The liquid level sensor 220 is used for measuring the liquid level of the ink in the ink cartridge 200 and transmitting the measured data to the computer system 40.

Specifically, the liquid level sensor 220 on the ink cartridge 200 may be a low liquid level sensor, and when the liquid level of the ink cartridge 200 reaches the lower limit of the liquid level, the liquid level sensor transmits a data signal to the computer system 40, and an alarm device on the computer system 40 or an alarm device on the ink cartridge 200 gives an alarm to remind an operator of performing a liquid replenishment operation.

In other embodiments, two level sensors 220 may be provided on the ink cartridge 200, one for a high level sensor and one for a low level sensor, to signal an alarm when the liquid level in the ink cartridge 200 reaches an upper or lower limit. When the volume of the ink cartridge 200 is large, 3 or even more liquid level sensors 220 may be provided.

As shown in fig. 3, the flow control module 50 may include a pressure regulating valve 51, a gas supply duct connected to the pressure regulating valve 51, and a gas supply device 52 connected to the gas supply duct. The pressure regulating valve 51 is connected to the ink cartridge 200 and is in communication with the computer system 40 to control the ejection volume of the nozzles 210, and the air supply device 52 provides air pressure to the ink cartridge 200.

Specifically, the pressure regulating valve 51 is a negative pressure regulating valve, and the range of negative pressure control is different according to the volume of the ink cartridge, and the larger the volume is, the larger the negative pressure is, the negative pressure value is controlled by the pressure regulating valve, and the ink jetting condition of the ink cartridge 200 is further controlled. In the case of an ink cartridge with a capacity of 150 ml, the negative pressure control range is 40mbar to 45mbar (mbar), i.e. the pressure range of the ink cartridge 200 monitored by the computer system 40 needs to be limited to 40mbar to 45mbar, and once the pressure range is exceeded, the computer system 40 sends a regulating signal to control the pressure regulating valve 51 to change the valve opening degree, so that the pressure finally reaches the limited range.

Further, the storage device 100 may further include a voltage control unit 80, and the voltage control unit 80 is connected to the ink cartridge 200 for controlling the ejection frequency of the ink cartridge.

The voltage control unit 80 may cooperate with the flow control module 50 to regulate the ejection state of the ink cartridge 200. Specifically, the ejection frequency and the ejection flow rate of the ink cartridge 200 are controlled in common by adjusting the opening degree of the pressure regulating valve 51 of the voltage control unit 80 and by controlling the magnitude, the energization time, and the energization interval time of the voltage applied to the ink cartridge 200 by the voltage control unit 80.

For example, the voltage applied to the ink cartridge 200 may be 15V to 40V, the duration of each voltage application may be 10us to 50us, and the ejection frequency of the nozzle 210 may be controlled to be 1HZ to 20HZ (hertz), and specifically, 1 HZ; the volume of the ejection from the nozzle 210 is 1pl to 30pl (10-9mL), and more specifically, 5pl, depending on the volume of the ink cartridge and the volume of the ejection per time. The actual voltage, the current-carrying time, the ejection frequency, the ejection volume, and other parameters can be set according to actual requirements, which are only exemplary and not limited herein.

In other embodiments, the voltage control unit 80 may also be communicatively connected to the computer system 40 (not shown), and the voltage control unit 80 may automatically control the magnitude of the voltage applied to the ink cartridge 200 and the time for applying the voltage by writing software of the computer system 40.

The computer system 40 may write a program of the volume per ejection and the ejection frequency of the nozzle 210, and set a volume per ejection value and an ejection frequency to monitor the ejection volume per ejection of the nozzle 210, and when the volume per ejection and the ejection frequency per ejection of the nozzle 210 exceed set values, the computer system 40 controls the pressure regulating valve 51 to regulate a negative pressure, and controls the voltage level and the power-on time of the voltage control unit 80, so as to regulate the volume per ejection and the ejection frequency per ejection of the nozzle 210 to return to preset values, thereby keeping the ink cartridge 200 in a small ejection state all the time and preventing the nozzle 210 from being blocked.

The sealed cavity 10 is provided with gloves, the sealed cavity 10 is equivalent to a glove box environment, the sealed cavity 10 is filled with protective gas, and due to the fact that the sealed cavity 10 is not consistent with the atmospheric environment, in the storage process of the ink cartridge 200, if the ink cartridge 200 in the sealed cavity 10 needs to be manually operated, such as ink adding, ink cartridge taking and the like, in order to protect operating personnel, the atmosphere in the sealed cavity needs to be converted into the atmospheric environment to perform operation on the sealed cavity 10, and therefore the gloves can be arranged to avoid atmosphere conversion in the sealed cavity, so that the ink cartridge 200 is prevented from being polluted, time is saved, cost is saved, and the like.

Further, the storage device 100 further comprises a transfer chamber 60, wherein the transfer chamber 60 is disposed adjacent to the sealed chamber 10. Since the atmosphere in the sealed chamber 10 is not uniform with the atmosphere in the atmosphere or other devices, a transfer chamber is required to transfer the atmosphere so that the ink cartridge 200 is placed in the sealed chamber 10.

By arranging the conversion cavity 60, because the volume of the conversion cavity 60 is smaller than that of the sealed cavity 10, only the small conversion cavity 60 needs to be converted between protective gas and air, and the large sealed cavity 10 does not need to be ventilated, so that the time and the gas cost are saved.

Specifically, the transfer chamber 60 includes a first chamber door communicating with the outside of the hermetic chamber 10 and a second chamber door communicating with the inside of the hermetic chamber. The ink cartridge 200 enters the transfer chamber 60 through the first chamber door, and the ink cartridge 200 in the transfer chamber 60 enters the hermetic chamber 10 through the second chamber door.

The transfer chamber 60 may be disposed inside the sealed chamber 10 or outside the sealed chamber 10, but it is necessary to communicate the transfer chamber 60 with the sealed chamber 10 through the second chamber door.

For convenience of operation, the transfer chamber 60 is disposed close to a chamber wall of the sealed chamber 10, and the transfer chamber 60 may be disposed at the bottom or a side of the sealed chamber 10.

In this embodiment, the converting chamber 60 is disposed in the sealed chamber 10 and is disposed at a side portion of the sealed chamber 10, and the first chamber door of the sealed chamber 10 is disposed on a side wall of the sealed chamber 10.

The storage device 100 further comprises a window 70, the window 70 is opened on the side wall of the sealed cavity 10, the window 70 is arranged corresponding to the ink cartridge 200 stored in the sealed cavity 10, and an operator can observe the liquid level and the spraying condition of the ink cartridge 200 conveniently.

As shown in fig. 4, an application of the storage device 100 is also provided, that is, a method for storing an ink cartridge by using the storage device 100, including: s10, providing a storage device 100 of an ink cartridge for inkjet printing, wherein the storage device 100 comprises a sealed chamber 10, a fixing unit 20 and a liquid recovery unit 30 arranged in the sealed chamber 10, a flow control module 50, and a computer system 40 in communication connection with the flow control module 50; s20, filling protective gas into the sealed cavity 10; s30, fixing the ink cartridge 200 to the fixing unit 20; s40, connecting the flow control module 50 with the ink cartridge 200; s50, inputting preset values of pressure and liquid level of the ink cartridge 200 on the computer system 40; s60, the computer system 40 controls the ink cartridge 200 to be in a continuous ejection state, and monitors and feedback-regulates the pressure and the liquid level of the ink cartridge 200 in real time.

The protective gas filled in the sealed cavity 10 can be nitrogen or argon, and can also be other inert gases.

Before the ink cartridge 200 is placed in the sealed cavity 10, the sealed cavity needs to be repeatedly inflated and deflated until the atmosphere in the sealed cavity 10 reaches the standard for safely storing the ink cartridge 200, and the communication between each component and the computer system 40 is checked to be normal.

When the storage device 100 is not provided with the switching chamber 60, the atmosphere of the sealed chamber 10 needs to be replaced by the atmospheric environment, the ink cartridge 200 is placed in the sealed chamber 10, and then the sealed chamber 10 is vacuumized and filled with the protective gas again. However, this operation is time consuming and increases consumption, and therefore, in this embodiment, the storage device is provided with a transfer chamber 60.

As shown in fig. 2, the S30 includes: firstly, the conversion cavity 60 is cleaned and dried; the ink cartridge 200 is then placed in the transfer chamber 60; then filling the conversion chamber 60 with the same protective gas as the sealed chamber 10; finally, the ink cartridge 200 is moved out of the transfer chamber 60 and fixed to the fixing unit 20.

Specifically, the converting chamber 60 is alternately pumped and inflated for a plurality of times until the converting chamber 60 is in a CDA (Clean Dry Air) environment, then a first chamber door of the converting chamber 60 is opened, the ink cartridge 200 is placed in the converting chamber 60, the first chamber door is closed, then the converting chamber 60 is pumped and inflated with the same protective gas as the converting chamber 60, after repeating 3-5 operations, a second chamber door of the converting chamber 60 is opened, the ink cartridge 200 is fixed on the fixing unit 20, the second chamber door of the converting chamber 60 is closed, and then the ink cartridge 200 is connected to the flow control module 50.

The ink cartridge 200 is provided with a liquid level sensor 220, and the liquid level sensor 220 is in communication connection with the computer system 40 and transmits a liquid level signal to the computer system 40.

The storage device 100 may further include a voltage control unit 80, and in the S40, the connecting the voltage control unit 80 to the ink cartridge 200. The voltage control unit 80 controls the voltage applied to the ink cartridge 200 and the time for applying the voltage, thereby controlling the ejection frequency of the ink cartridge 200.

The computer system 40 is pre-written with a control program, and pre-set values of the pressure and the liquid level of the ink cartridge 200 are pre-input into the computer system 40, wherein the pre-set values can be a certain range of values, or a specific value, depending on the actual design of the ink cartridge.

The voltage control unit 80 can also be connected to the computer system 40 in a communication manner, and the software of the computer system 40 can write a control program of the voltage control unit 80 to automatically control the voltage applied by the voltage control unit 80 to the ink cartridge 200 and the time for applying the voltage.

In addition, the volume value and the ejection frequency value of each ejection of the nozzles 210 of the ink cartridge 200 may be set on the computer system 40 so as to intuitively acquire the ejection amount of the ink cartridge 200.

In the process of storing the ink cartridge 200, the computer system 40 controls the ink cartridge 200 to be in the continuous ejection state, and adjusts the pressure, the liquid level, the applied voltage and the voltage application time of the ink cartridge 200 in time through the data signals transmitted by the liquid level sensor 220 and the flow control module 50, so as to maintain the ink cartridge 200 in the small ejection state.

When the computer system 40 displays that the liquid level of the ink box 200 is lower than the lower limit value, the alarm device of the computer system 40 gives an alarm, and an operator adds a proper amount of ink into the ink box 200 through gloves, wherein the ink is stored in the sealed cavity 10; when the computer system 40 displays that the negative pressure value of the ink cartridge 200 exceeds the set value, the computer system 40 sends a feedback signal to the flow control module 50 and the voltage control unit 80, the pressure regulating valve 51 of the flow control module 50 automatically changes the valve opening degree to regulate the pressure in the ink cartridge 200, and the voltage control unit 80 automatically changes the voltage value or/and the power-on time until the real-time displayed pressure value of the computer system 40 is within the set range.

According to the storage device of the ink box for ink-jet printing, provided by the embodiment of the application, on one hand, the ink can be prevented from being subjected to cross contamination under the atmosphere of protective gas, and the service life and the stability of physicochemical properties of the ink during storage are kept; on the other hand, the ink recovery and the ejection function can be ensured to be normal, so that the nozzle blockage caused by long-term placement of the ink box is avoided.

In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

The storage device of the ink cartridge for inkjet printing and the storage method thereof provided by the embodiments of the present application are described in detail above, and the principle and the implementation of the present application are explained by applying specific examples herein, and the description of the above embodiments is only used to help understanding the technical solution and the core idea of the present application; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present disclosure as defined by the appended claims.

Claims

1. A storage device for an ink cartridge for inkjet printing, comprising:

sealing the cavity;

the fixing unit is arranged in the sealing cavity and used for fixing the ink box;

the liquid recovery unit is arranged in the sealing cavity;

the flow control module is connected with the ink box; and

the computer system is in communication connection with the flow control module;

the computer system is also in communication connection with the ink box, the flow control module controls the ink spraying amount of the ink box, and the computer system monitors and adjusts the ink liquid level and the pressure of the ink box in a feedback mode so as to control the nozzle of the ink box to continuously spray ink; the storage device also comprises a voltage control unit connected with the ink box, and the voltage control unit is used for controlling the ejection frequency of the ink box.

2. The storage device of claim 1, further comprising a transfer chamber disposed proximate to the sealed chamber.

3. The storage device of claim 2, wherein the transfer chamber comprises a first chamber door in communication with an exterior of the sealed chamber and a second chamber door in communication with an interior of the sealed chamber.

4. The storage device of claim 1, wherein a fluid level sensor is disposed on the ink container, and the computer system is communicatively coupled to the fluid level sensor.

5. The storage device of claim 1, wherein the flow control module comprises a pressure regulating valve, a gas supply conduit connected to the pressure regulating valve, and a gas supply connected to the gas supply conduit.

6. The storage device of claim 5, wherein said pressure regulating valve is coupled to said ink cartridge, said pressure regulating valve being in communication with said computer system.

7. A method of storing an ink cartridge for inkjet printing, comprising:

s10, providing a storage device of an ink box for ink-jet printing, wherein the storage device comprises a sealing cavity, a fixing unit and a liquid recovery unit which are arranged in the sealing cavity, a flow control module, a computer system which is in communication connection with the flow control module and the ink box, and a voltage control unit, wherein the flow control module controls the ink ejection amount of the ink box, the computer system monitors and feeds back and adjusts the ink liquid level and the pressure of the ink box, and the voltage control unit is used for controlling the ejection frequency of the ink box;

s20, filling protective gas into the sealing cavity;

s30, fixing the ink cartridge to the fixing unit;

s40, connecting the flow control module to the ink cartridge;

8. The storage method of claim 7, wherein the storage device further comprises a transfer chamber disposed proximate to the sealed chamber.

9. The storage method according to claim 8, wherein the S30 includes:

cleaning and drying the conversion cavity;

placing the ink cartridge in the transfer chamber;

filling the conversion cavity with the same protective gas as the sealing cavity;

and moving the ink box out of the conversion cavity and fixing the ink box on the fixing unit.