Leak-proof low-frequency suction module and ink-jet printing system

Abstract

The utility model relates to an anti-leakage low-frequency suction module and an ink-jet printing system, the anti-leakage low-frequency suction module comprises a liquid receiving assembly, the liquid receiving assembly comprises a liquid disc, the top surface of the disc wall of the liquid disc is provided with a sealing structure, and the sealing structure is used for abutting against the edge of the spraying surface of a nozzle module; the liquid disc is elastically arranged above the seat body; when the spray head module abuts against the sealing structure, orthographic projections of all spray holes of the spray head module in the vertical direction all fall on the bottom of the liquid disc. Through the arrangement of the liquid disc and the sealing structure, after the spray head module abuts against the sealing structure on the liquid disc, the interior of the liquid disc and the spraying face of the spray head module form a sealed space, and the liquid disc elastically connected with the seat body also ensures abutting sealing of the spray head module and the liquid disc. Therefore, the residual functional liquid on the nozzle module and the liquid tray is not easy to volatilize to the external environment to cause pollution, and the safety is improved.

Description

Technical Field

[0001] The present application relates to the field of inkjet printing technology, and in particular to a leak-proof low-frequency suction module and an inkjet printing system. Background Art

[0002] Inkjet printing technology has broad application prospects in multiple manufacturing fields such as information, energy, medical care, and national defense. With the rapid development of technology, it has also been increasingly used in emerging fields such as OLED, RFID, thin-film solar cells, wearable flexible devices, PCBs, smart skins and other flexible devices.

[0003] Due to the high viscosity of the printed functional liquid, when preparing for printing or during printing intervals, the print head module needs to be kept in a low-frequency working state to keep the print head module spraying the functional liquid continuously, thereby reducing the possibility of nozzle blockage of the print head module.

[0004] In the related art, a liquid pan is set in the maintenance area, and the nozzle module to be worked is moved above the liquid pan to collect the functional liquid sprayed by the nozzle module when working at a low frequency, while ensuring that the nozzle hole of the nozzle module is not blocked.

[0005] During downtime for maintenance, the print chamber must be opened to inspect the interior. This exposes the printhead module and fluid reservoir to the external environment. Because the functional fluid used in printing is toxic and easily volatile, any residual fluid adhering to the nozzles of the printhead module and remaining on the fluid reservoir will evaporate. This toxic fluid can contaminate the surrounding environment, potentially affecting personnel health and posing a safety hazard. Utility Model Content

[0006] The embodiments of the present application provide a leak-proof low-frequency suction module and inkjet printing system to solve the technical problem in the related art that when the printing chamber is opened for inspection, the functional liquid remaining on the nozzle module and the liquid tray will evaporate, causing environmental pollution, affecting personnel health, and posing a safety hazard.

[0007] In a first aspect, a leak-proof low-frequency suction module is provided, comprising:

[0008] A liquid receiving assembly, the liquid receiving assembly comprising a liquid pan, a sealing structure being provided on the top surface of the liquid pan wall, the sealing structure being abutted against the edge of the ejection surface of the nozzle module;

[0009] The seat body, the liquid pan is elastically arranged above the seat body; wherein,

[0010] When the nozzle module abuts against the sealing structure, all the nozzle holes of the nozzle module are projected vertically onto the bottom of the liquid pan.

[0011] In some embodiments, the sealing structure includes a sealing ring, which is embedded in the top surface of the wall of the liquid pan and protrudes from the top surface of the wall of the liquid pan.

[0012] In some embodiments, the leakage-proof low-frequency suction module further includes a plurality of spring columns, which are vertically arranged, wherein the fixed ends of the plurality of spring columns are connected to the seat body, and the movable ends of the plurality of spring columns are connected to the liquid pan.

[0013] In some embodiments, the leak-proof low-frequency suction module further includes a negative pressure component, and a connecting port is provided on the inner bottom surface of the liquid pan, and the adsorption end of the negative pressure component is connected to the liquid pan through the connecting port; wherein,

[0014] The functional liquid in the liquid pan is drawn away from the communication port by the negative pressure component.

[0015] In some embodiments, the bottom of the liquid pan is in a shape with a lower middle and higher edges, and the communication port is opened at the lowest point of the bottom of the liquid pan.

[0016] In some embodiments, both the wall and the bottom of the liquid pan are provided with an anti-stick layer.

[0017] In some embodiments, the leak-proof low-frequency suction module further includes a positive pressure component, and the gas supply end of the positive pressure component is connected to the liquid pan to supply process gas into the liquid pan.

[0018] In some embodiments, the process gas includes nitrogen.

[0019] In some embodiments, the leak-proof low-frequency suction module further includes a lifting assembly, wherein the lifting assembly includes:

[0020] A base, wherein the base body is arranged on the base for lifting and sliding;

[0021] A lifting drive member is installed on the base, and a driving end of the lifting drive member is connected to the base body to drive the base body to move up and down.

[0022] The beneficial effects of the technical solution provided by this application include:

[0023] An embodiment of the present application provides a leak-proof low-frequency suction module. Due to the setting of the liquid receiving component, during the printing interval, the nozzle module operates at a low frequency at the liquid pan position. The liquid pan is used to receive and collect the functional liquid sprayed by the nozzle module to prevent the functional liquid at the nozzle hole of the nozzle module from not flowing and solidifying and clogging the nozzle hole.

[0024] Before shutting down the machine and opening the printing chamber for internal inspection and maintenance, move the nozzle module above the liquid tray and lower the nozzle module until the injection surface of the nozzle module is pressed against the sealing structure. At this time, the interior of the liquid tray and the injection surface of the nozzle module form a sealed space, and the nozzle holes of the nozzle module are all located in the sealed space. The functional liquid at the nozzle holes of the nozzle module and the functional liquid remaining on the liquid tray are all confined in the sealed space, reducing the possibility of the functional liquid volatilizing into the external environment.

[0025] In addition, since the liquid pan is elastically arranged on the seat, when the nozzle module is pressed against the sealing structure, the adaptive elasticity of the liquid pan decreases, and the elastic force generated pushes the liquid pan upward, so that the liquid pan synchronously applies force to the nozzle module, thereby ensuring the sealing between the nozzle module and the sealing structure.

[0026] Therefore, even after the printing chamber is unpacked, the functional liquid is stably confined in the sealed space surrounded by the liquid tray and the ejection surface of the nozzle module. The functional liquid is not easy to evaporate into the air, the external environment is not easy to be polluted, and it is not easy to affect the health of the staff, thus eliminating safety hazards and improving safety.

[0027] In a second aspect, an inkjet printing system is provided, comprising the leak-proof low-frequency suction module as described above.

[0028] Another embodiment of the present application provides an inkjet printing system. Since the inkjet printing system includes the above-mentioned anti-leakage low-frequency suction module, the beneficial effects of the inkjet printing system are consistent with the beneficial effects of the above-mentioned anti-leakage low-frequency suction module, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0030] Figure 1 A schematic diagram of a leak-proof low-frequency suction module provided in an embodiment of the present application;

[0031] Figure 2 Schematic diagram of the leak-proof low-frequency suction module and nozzle module provided in an embodiment of the present application;

[0032] Figure 3 Schematic diagram of the position of the liquid tray and nozzle module provided in an embodiment of the present application.

[0033] In the figure: 1. Liquid receiving assembly; 11. Liquid tray; 11a. Connecting port; 12. Sealing structure; 2. Base; 3. Spring column; 4. Negative pressure assembly; 5. Positive pressure assembly; 6. Lifting assembly; 61. Base; 62. Lifting drive member; 7. Nozzle module; 7a. Spraying surface; 7b. Nozzle hole. DETAILED DESCRIPTION

[0034] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0035] The embodiments of the present application provide a leak-proof low-frequency suction module and inkjet printing system. The leak-proof low-frequency suction module is provided with a liquid pan and a sealing structure. After the nozzle module is pressed against the sealing structure on the liquid pan, the interior of the liquid pan and the injection surface of the nozzle module form a sealed space, and the liquid pan elastically connected to the base also ensures that the nozzle module and the liquid pan are tightly sealed. Therefore, the functional liquid remaining on the nozzle module and the liquid pan is not easy to evaporate to the external environment and cause pollution, thereby improving safety. The present application solves the technical problem in the related art that when the printing chamber is opened for inspection, the functional liquid remaining on the nozzle module and the liquid pan will evaporate, causing environmental pollution, affecting personnel health, and posing a safety hazard.

[0036] A leak-proof low-frequency suction module is used to be arranged at the maintenance station of the printing system. When the printing system pauses printing, the nozzle module 7 of the printing system moves to the position of the low-frequency suction module at the maintenance station. The nozzle module 7 works at a low frequency at the low-frequency suction module to keep the functional liquid at the nozzle hole 7b in a flowing state to avoid the nozzle hole 7b from being blocked, thereby ensuring that the nozzle module 7 can operate normally.

[0037] Reference Figure 1 and Figure 2 The leak-proof low-frequency suction module includes a liquid receiving assembly 1, which includes a liquid pan 11. The top surface of the liquid pan 11 is provided with a sealing structure 12, which abuts the edge of the ejection surface 7a of the nozzle module 7. After the nozzle module 7 is pressed down and abuts against the sealing structure 12, the sealing structure 12 presses against the liquid pan 11 and blocks the gap between the top surface of the liquid pan 11 and the ejection surface 7a of the nozzle module 7. As a result, a sealed space is formed between the ejection surface 7a of the nozzle module 7 and the interior of the liquid pan 11.

[0038] Reference Figure 2 and Figure 3Since the edge of the spraying surface 7a of the nozzle module 7 abuts the sealing structure 12 on the top surface of the liquid pan 11, the vertical projections of all the nozzle holes 7b of the nozzle module 7 fall on the bottom of the liquid pan 11, that is, all the nozzle holes 7b of the nozzle module 7 are in the sealed space surrounded by the liquid pan 11 and the spraying surface 7a of the nozzle module 7.

[0039] With this arrangement, before the machine needs to be shut down and the printing chamber opened for internal inspection and maintenance, the nozzle module 7 is moved above the liquid pan 11, and the nozzle module 7 is lowered until the injection surface 7a of the nozzle module 7 is pressed against the sealing structure 12. At this time, the interior of the liquid pan 11 and the injection surface 7a of the nozzle module 7 form a sealed space, and the nozzle holes 7b of the nozzle module 7 are both located in the sealed space. The functional liquid at the nozzle holes 7b of the nozzle module 7 and the functional liquid remaining on the liquid pan 11 are both confined in the sealed space, reducing the possibility of the functional liquid volatilizing into the external environment.

[0040] Reference Figure 1 and Figure 2 Specifically, the sealing structure 12 includes a sealing ring embedded in the top surface of the liquid pan 11 and protruding from the top surface of the liquid pan 11. When the ejection surface 7a of the nozzle module 7 presses against the sealing ring, the sealing ring deforms, thereby filling the gap between the ejection surface 7a and the top surface of the liquid pan 11, thereby improving the sealing performance of the sealed space enclosed by the liquid pan 11 and the ejection surface 7a of the nozzle module 7.

[0041] Reference Figure 1 and Figure 2 The leak-proof low-frequency suction module further comprises a base body 2. The liquid contact component 1 is elastically arranged on the base body 2 and can elastically move up and down relative to the base body 2.

[0042] Reference Figure 1 and Figure 2 Specifically, the liquid pan 11 is elastically connected to the seat body 2.

[0043] In this arrangement, since the liquid pan 11 is elastically arranged on the base body 2, when the nozzle module 7 is pressed against the sealing structure 12, the adaptive elasticity of the liquid pan 11 decreases, and the generated elastic force pushes the liquid pan 11 upward, so that the liquid pan 11 synchronously applies force to the nozzle module 7, thereby ensuring the sealing between the nozzle module 7 and the sealing structure 12.

[0044] Reference Figure 1 and Figure 2 The leak-proof low-frequency suction module further includes a plurality of spring columns 3, each of which is vertically arranged. The fixed ends of the spring columns 3 are connected to the base 2, and the movable ends of the spring columns 3 are connected to the liquid pan 11. The spring columns 3 are evenly distributed along the bottom edge of the liquid pan 11.

[0045] In this arrangement, the spring column 3 is used to elastically connect the liquid pan 11 and the base body 2, and the movement direction of the liquid pan 11 is restricted, so that the liquid pan 11 only moves in the vertical direction, avoiding the liquid pan 11 from tilting, and ensuring that the injection surface 7a of the nozzle module 7 can evenly press the liquid pan 11, thereby reducing the possibility of a gap between the liquid pan 11 and the injection surface 7a of the nozzle module 7, and the sealed state inside the liquid pan 11 reduces the possibility of the functional liquid volatilizing to the external environment.

[0046] Reference Figure 1 and Figure 2 The leak-proof low-frequency suction module also includes a negative pressure assembly 4, which is mounted within the base 2. A communication port 11a extends through the bottom surface of the liquid pan 11. The suction end of the negative pressure assembly 4 communicates with the liquid pan 11 through the communication port 11a. The functional liquid in the liquid pan 11 is drawn away through the communication port 11a by the negative pressure assembly 4.

[0047] With this arrangement, the ejection surface 7a of the nozzle module 7 abuts the sealing structure 12, forming a sealed space with the interior of the liquid pan 11. The negative pressure assembly 4 creates a negative pressure within the liquid pan 11, and the remaining functional liquid within the liquid pan 11 is sucked away by the air pressure, thereby cleaning the interior of the liquid pan 11. By cleaning the functional liquid, the amount of functional liquid within the liquid pan 11 is reduced, further minimizing the possibility of volatilization and leakage of the functional liquid within the liquid pan 11.

[0048] In this embodiment, the negative pressure assembly 4 includes a pump body which is connected to the communication port 11a via a hose.

[0049] Reference Figure 1 and Figure 2 Furthermore, the bottom of the liquid pan 11 is in a shape with a lower middle and higher edges, and the communication port 11a is opened at the lowest point of the bottom of the liquid pan 11. It can be understood that the bottom of the liquid pan 11 has a slope.

[0050] This arrangement, by providing a sloped bottom portion of liquid pan 11, allows the functional liquid to flow along the bottom portion of liquid pan 11 to the communication opening 11a, preventing excess functional liquid from remaining within liquid pan 11. Furthermore, because the lowest point of the bottom portion of liquid pan 11 is located in the middle, the functional liquid is less likely to adhere to the inner corner between the bottom and the wall of liquid pan 11, facilitating subsequent cleaning of liquid pan 11.

[0051] Preferably, both the wall and the bottom of the liquid pan 11 are provided with an anti-sticking layer. In this embodiment, the anti-sticking layer comprises a polytetrafluoroethylene layer.

[0052] With this arrangement, residual functional liquid is not easily attached to the bottom and wall of the liquid pan 11, which facilitates timely discharge of the functional liquid in the liquid pan 11. Therefore, the functional liquid reduces the amount of functional liquid volatilized in the liquid pan 11. The functional liquid after volatilization is less and is less likely to overflow from the liquid pan 11.

[0053] Reference Figure 1 and Figure 2 The leak-proof low-frequency suction module further includes a positive pressure assembly 5, which is installed in the base 2. The air supply end of the positive pressure assembly 5 is connected to the liquid pan 11 to supply process gas to the liquid pan 11. In this embodiment, the positive pressure assembly 5 is connected to the liquid pan 11 through the communication port 11a.

[0054] The process gas is an inert gas, and the functional liquid is not easily oxidized in the process gas environment. In this embodiment, the process gas includes nitrogen.

[0055] In this arrangement, after the injection surface 7a of the nozzle module 7 presses the liquid pan 11, the negative pressure component 4 is first used to clean the liquid pan 11, and then the positive pressure component 5 works to provide process gas to the liquid pan 11. At this time, the nozzle hole 7b of the nozzle module 7 is in the process gas environment. When the nozzle module 7 works at a low frequency, the functional liquid sprayed by the nozzle module 7 is in the process gas environment. Therefore, the functional liquid at the nozzle hole 7b of the nozzle module 7 is not easily oxidized and clogs the nozzle hole 7b, so as to ensure the normal operation of the nozzle module 7.

[0056] In addition, the functional liquid sprayed by the nozzle module 7 can flow to the communication port 11 a and leave the liquid pan 11 , which makes it difficult for the functional liquid to accumulate. Therefore, the functional liquid is not likely to volatilize excessively and overflow the sealed liquid pan 11 .

[0057] Furthermore, because the liquid pan 11 is elastically mounted on the base 2, after the nozzle module 7 presses against the liquid pan 11, the elasticity of the liquid pan 11 decreases, and the liquid pan 11 is subjected to an upward elastic force, which actively presses the liquid pan 11 against the nozzle module 7. Even if there is positive pressure in the liquid pan 11, it is unlikely that a gap will appear between the liquid pan 11 and the nozzle module 7, thereby ensuring the sealing state of the liquid pan 11.

[0058] Specifically, the positive pressure assembly 5 includes an air supply pump, which is connected to the communication port 11 a via a hose and is installed in the seat 2 .

[0059] Reference Figure 1 and Figure 2 Optionally, the leak-proof low-frequency suction module further includes a lifting assembly 6, which includes a base 61 and a lifting drive 62. The base 2 is lifted and slidably disposed on the base 61. In this embodiment, the base 2 is lifted and slidably disposed on the base 61 via a plurality of guide columns.

[0060] The lifting drive member 62 is mounted on the base 61, and the driving end of the lifting drive member 62 is connected to the base 2 to drive the base 2 to move up and down. The lifting drive member 62 includes a screw mechanism, a cylinder or a linear motor.

[0061] This arrangement allows the base 2 to be raised and lowered by the lifting assembly 6 to adjust the height of the base 2 and the liquid receiving assembly 1, thereby adapting to the maintenance requirements of the nozzle modules 7 at different heights. It should be noted that the lifting stroke of the nozzle module 7 is limited. If the liquid receiving assembly 1 is too low, the nozzle module 7 will have difficulty in pressing against the liquid pan 11. If the liquid receiving assembly 1 is too high, the nozzle module 7 is likely to collide with the liquid receiving assembly 1.

[0062] An embodiment of the present application provides a leak-proof low-frequency suction module. Due to the setting of the liquid receiving component 1, during the printing interval, the nozzle module 7 operates at a low frequency at the position of the liquid pan 11. The liquid pan 11 is used to receive and collect the functional liquid sprayed by the nozzle module 7 to prevent the functional liquid at the nozzle hole 7b of the nozzle module 7 from not flowing and solidifying and clogging the nozzle hole 7b.

[0063] Before shutting down the machine and opening the printing chamber for internal inspection and maintenance, move the nozzle module 7 to above the liquid pan 11, and lower the nozzle module 7 until the injection surface 7a of the nozzle module 7 is pressed against the sealing structure 12. At this time, the interior of the liquid pan 11 and the injection surface 7a of the nozzle module 7 form a sealed space, and the nozzle holes 7b of the nozzle module 7 are both located in the sealed space. The functional liquid at the nozzle holes 7b of the nozzle module 7 and the functional liquid remaining on the liquid pan 11 are both confined in the sealed space, reducing the possibility of the functional liquid volatilizing into the external environment.

[0064] In addition, since the liquid pan 11 is elastically arranged on the base 2, when the nozzle module 7 is pressed against the sealing structure 12, the adaptive elasticity of the liquid pan 11 decreases, and the generated elastic force pushes the liquid pan 11 upward, so that the liquid pan 11 synchronously applies force to the nozzle module 7, thereby ensuring the sealing between the nozzle module 7 and the sealing structure 12.

[0065] Therefore, even after the printing chamber is unpacked, the functional liquid is stably confined in the sealed space surrounded by the liquid tray 11 and the ejection surface 7a of the nozzle module 7. The functional liquid is not easy to evaporate into the air, the external environment is not easy to be polluted, and it is not easy to affect the health of the staff, thereby eliminating safety hazards and improving safety.

[0066] Another embodiment of the present application provides an inkjet printing system, comprising the leak-proof low-frequency suction module as described above.

[0067] Another embodiment of the present application provides an inkjet printing system. Since the inkjet printing system includes the above-mentioned anti-leakage low-frequency suction module, the beneficial effects of the inkjet printing system are consistent with the beneficial effects of the above-mentioned anti-leakage low-frequency suction module, which will not be repeated here.

[0068] In the description of this application, it should be noted that the terms "upper" and "lower" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0069] It should be noted that, in this application, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element.

[0070] The foregoing is merely a list of specific embodiments of the present application, intended to enable those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the broadest scope consistent with the principles and novel features of the present application.

Claims

1. A leak-proof low-frequency suction module, characterized in that: It includes: A liquid receiving assembly, the liquid receiving assembly comprising a liquid pan, a sealing structure being provided on the top surface of the liquid pan wall, the sealing structure being abutted against the edge of the ejection surface of the nozzle module; The seat body, the liquid pan is elastically arranged above the seat body; wherein, When the nozzle module abuts against the sealing structure, all the nozzle holes of the nozzle module are projected vertically onto the bottom of the liquid pan.

2. The leak-proof low-frequency suction module according to claim 1, characterized in that: The sealing structure includes a sealing ring, which is embedded in the top surface of the dish wall of the liquid dish and protrudes from the top surface of the dish wall of the liquid dish.

3. The leak-proof low-frequency suction module according to claim 1, characterized in that: It also includes a plurality of spring columns, which are vertically arranged, with fixed ends of the plurality of spring columns connected to the seat body, and movable ends of the plurality of spring columns connected to the liquid pan.

4. The leak-proof low-frequency suction module according to claim 1, characterized in that: It also includes a negative pressure component, the bottom surface of the liquid pan is provided with a through communication port, and the adsorption end of the negative pressure component is connected to the liquid pan through the communication port; wherein, The functional liquid in the liquid pan is drawn away from the communication port by the negative pressure component.

5. The leak-proof low-frequency suction module according to claim 4, characterized in that: The bottom of the liquid pan is in a shape with a lower middle and higher edges, and the communication port is opened at the lowest point of the bottom of the liquid pan.

6. The leak-proof low-frequency suction module according to claim 1 or 5, characterized in that: The dish wall and the dish bottom of the liquid dish are both provided with an anti-sticking layer.

7. The leak-proof low-frequency suction module according to claim 1, characterized in that: A positive pressure component is also included, wherein a gas supply end of the positive pressure component is communicated with the liquid pan to supply process gas into the liquid pan.

8. The leak-proof low-frequency suction module according to claim 7, characterized in that: The process gas includes nitrogen.

9. The leak-proof low-frequency suction module according to claim 1, characterized in that: Also included is a lifting assembly, the lifting assembly comprising: A base, wherein the base body is arranged on the base for lifting and sliding; A lifting drive member is installed on the base, and a driving end of the lifting drive member is connected to the base body to drive the base body to move up and down.

10. An inkjet printing system, characterized in that: It comprises the leak-proof low-frequency suction module as described in any one of claims 1 to 9.

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