CN114103469B - Air channel system of ink-jet printer - Google Patents
Air channel system of ink-jet printer Download PDFInfo
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- CN114103469B CN114103469B CN202111324270.4A CN202111324270A CN114103469B CN 114103469 B CN114103469 B CN 114103469B CN 202111324270 A CN202111324270 A CN 202111324270A CN 114103469 B CN114103469 B CN 114103469B
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- way valve
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/17—Ink jet characterised by ink handling
- B41J2/175—Ink supply systems ; Circuit parts therefor
- B41J2/17503—Ink cartridges
- B41J2/17556—Means for regulating the pressure in the cartridge
Abstract
The invention relates to the technical field of ink-jet printers, and particularly discloses a gas path system of an ink-jet printer, which comprises a positive pressure generator and a first gas path; the positive pressure generator is used for generating positive pressure gas; the first air path comprises a negative pressure pump, a first three-way valve and a first vacuum generator, the first vacuum generator is connected in series between the positive pressure generator and a first interface of the first three-way valve, the negative pressure pump is communicated with a second interface of the first three-way valve, and a third interface of the first three-way valve is used for communicating the ink box. This ink jet printer's gas circuit system has solved when the air feeder breaks down, and ink jet printer will unable normal work, and the printing ink in the ink jet system will unable circulation flow, and then leads to the printing ink caking, the problem of the jam of pipeline or shower nozzle even.
Description
Technical Field
The invention relates to the technical field of ink-jet printers, in particular to an air path system of an ink-jet printer.
Background
The ink jet printer is composed of a plurality of systems with different functions, wherein an air path system is an important component of the ink jet printer and is used for controlling positive and negative pressure of an ink path system and action of each pneumatic mechanism. Whether the gas circuit system can stably and reliably operate or not directly influences the printing effect of the equipment.
The current air path system of the ink-jet printer generally adopts a single set of positive and negative pressure air sources, the air is supplied in a centralized manner by a workshop or is supplied by a positive and negative pressure pump in the device under electric drive, when the air supply device breaks down, the ink-jet printer cannot work normally, and the ink in the ink-jet system cannot flow circularly, so that the ink is agglomerated, and the blockage of a pipeline or a nozzle is caused.
Disclosure of Invention
The invention aims to: the air path system of the ink-jet printer is provided to solve the problems that when air supply equipment fails in the related art, the ink-jet printer cannot work normally, ink in the ink-jet system cannot flow circularly, ink agglomeration is caused, and blockage of a pipeline or a nozzle is caused.
The invention provides a gas circuit system of an ink-jet printer, which comprises:
a positive pressure generator; for generating a gas at positive pressure;
the first air path comprises a negative pressure pump, a first three-way valve and a first vacuum generator, the first vacuum generator is connected between the positive pressure generator and a first interface of the first three-way valve in series, the negative pressure pump is communicated with a second interface of the first three-way valve, and a third interface of the first three-way valve is used for communicating the ink box; the first port of the first three-way valve can be communicated with the second port or the third port alternatively;
the air path system of the ink-jet printer further comprises a second air path, wherein the second air path comprises a positive pressure pump, a second three-way valve and a positive and negative pressure air path, a first interface of the second three-way valve is communicated with the positive pressure generator, a second interface of the second three-way valve is communicated with the positive pressure pump, a third interface of the second three-way valve is communicated with the positive and negative pressure air path, and the positive and negative pressure air path selectively provides positive and negative pressure air for the ink box.
As a preferred technical solution of the air path system of the inkjet printer, the positive/negative pressure air path includes a third three-way valve, a first pressure regulating valve, a second pressure regulating valve, and a second vacuum generator, the first pressure regulating valve is disposed between a third interface of the second three-way valve and a first interface of the third three-way valve, the second pressure regulating valve and the second vacuum generator are sequentially disposed between a third interface of the second three-way valve and a second interface of the third three-way valve, and the third interface of the third three-way valve is used for communicating the ink cartridge;
the first port of the second three-way valve can be alternatively communicated with the second port and the third port; the first port of the third three-way valve is alternatively connectable to the second port and the third port.
As a preferred technical scheme of the air circuit system of the ink-jet printer, the first air circuit further comprises a first two-way valve, a first air storage tank and a first pressure gauge, the first two-way valve and the first air storage tank are sequentially connected in series between the first three-way valve and the ink box, and the first pressure gauge monitors the pressure in the first air storage tank.
As a preferred technical scheme of the air path system of the ink-jet printer, the positive and negative pressure air path further comprises a second two-way valve, a second air storage tank and a second pressure gauge, the second two-way valve and the second air storage tank are sequentially connected in series between the second vacuum generator and the third three-way valve, and the second pressure gauge monitors the pressure in the second air storage tank.
As a preferable technical solution of the air path system of the inkjet printer, the first air path further includes a third pressure regulating valve, and the third pressure regulating valve is disposed between the first vacuum generator and the positive pressure generator.
As an optimal technical scheme of an air channel system of the ink-jet printer, the ink-jet printer further comprises a third air channel, wherein the third air channel comprises a fourth pressure regulating valve, a third vacuum generator and a third pressure gauge, the positive pressure generator, the fourth pressure regulating valve and the third vacuum generator are sequentially connected, and the third pressure gauge is used for measuring the pressure at the outlet of the third vacuum generator.
As a preferred technical solution of the air path system of the inkjet printer, the third air path further includes two third two-way valves, and the two third two-way valves are disposed on two sides of the third vacuum generator.
As the optimal technical scheme of the air path system of the ink-jet printer, the ink-jet printer further comprises a filtering component, and the filtering component filters the positive pressure gas generated by the positive pressure generator.
As the optimal technical scheme of the air path system of the ink-jet printer, a plurality of positive and negative pressure air paths are arranged.
As the optimal technical scheme of the air path system of the ink-jet printer, the ink-jet printer further comprises a pressure sensor, wherein the pressure sensor is used for monitoring the pressure value of the positive pressure gas generated by the positive pressure generator.
The invention has the beneficial effects that:
the invention provides a gas path system of an ink-jet printer, which comprises a positive pressure generator and a first gas path; the positive pressure generator is used for generating positive pressure gas; the first air path comprises a negative pressure pump, a first three-way valve and a first vacuum generator, the first vacuum generator is connected between the positive pressure generator and a first interface of the first three-way valve in series, the negative pressure pump is communicated with a second interface of the first three-way valve, and a third interface of the first three-way valve is used for communicating the ink box; in first gas circuit, first interface and the third interface intercommunication of first three-way valve, the second interface of first three-way valve is closed, and positive pressure gas acts on first vacuum generator, and then makes first vacuum generator provide the negative pressure for the ink horn. When the positive pressure generator fails and cannot normally work, in the first air path, the second interface and the third interface of the first three-way valve are communicated, the first interface of the first three-way valve is closed, and at the moment, the negative pressure pump starts to work to form negative pressure in the first air path. This gas circuit system provides one set of reserve air pressure system for first gas circuit, and when having solved air feeder and having broken down, inkjet printer will unable normal work, and the printing ink in the inkjet system will unable circulating flow, and then leads to the printing ink caking, the problem of the jam of pipeline or shower nozzle even.
Drawings
Fig. 1 is a schematic diagram of an air path system of an inkjet printer according to an embodiment of the present invention.
In the figure:
11. a filter assembly; 111. a water droplet separator; 112. a two-part member; 12. a pressure sensor;
2. a first gas path; 21. a negative pressure pump; 22. a first three-way valve; 23. a first vacuum generator; 24. a first two-way valve; 25. a first gas tank; 26. a first pressure gauge; 27. a third pressure regulating valve;
3. a second gas path; 31. a positive pressure pump; 32. a second three-way valve; 33. a positive and negative pressure gas circuit; 331 a third three-way valve; 332. a first pressure regulating valve; 333. a second pressure regulating valve; 334. a second vacuum generator; 335. a second two-way valve; 336. a second gas tank; 337. a second pressure gauge;
4. a third gas path; 41. a fourth pressure regulating valve; 42. a third vacuum generator; 43. a third pressure gauge; 44. and a third two-way valve.
100. An ink cartridge; 200. and (4) other modules.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. 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 invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Where the terms "first position" and "second position" are two different positions, and where a first feature is "over", "above" and "on" a second feature, it is intended that the first feature is directly over and obliquely above the second feature, or simply means 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.
In the description of the present invention, it should 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; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
As shown in fig. 1, the present invention provides an air channel system of an inkjet printer, which includes a positive pressure generator, a first air channel 2 and a second air channel 3; the positive pressure generator is used for generating positive pressure gas; the first air path 2 comprises a negative pressure pump 21, a first three-way valve 22 and a first vacuum generator 23, the first vacuum generator 23 is connected in series between the positive pressure generator and a first interface of the first three-way valve 22, the negative pressure pump 21 is communicated with a second interface of the first three-way valve 22, and a third interface of the first three-way valve 22 is used for communicating the ink cartridge 100; the second air path 3 includes a positive pressure pump 31, a second three-way valve 32, and a positive/negative pressure air path 33, a first interface of the second three-way valve 32 is communicated with the positive pressure generator, a second interface of the second three-way valve 32 is communicated with the positive pressure pump 31, a third interface of the second three-way valve 32 is communicated with the positive/negative pressure air path 33, and the positive/negative pressure air path 33 selectively provides positive/negative pressure air to the ink cartridge 100. When the positive pressure generator of the air path system of the ink-jet printer works normally, the positive pressure generator generates positive pressure gas. In the first air path 2, the first port and the third port of the first three-way valve 22 are communicated, the second port of the first three-way valve 22 is closed, and the positive pressure gas acts on the first vacuum generator 23, so that the first vacuum generator 23 provides the negative pressure to the ink cartridge 100. In the second air path 3, the first port and the third port of the second three-way valve 32 are communicated, the second port of the second three-way valve 32 is closed, and the positive pressure air enters the positive and negative pressure air path 33, so that the positive and negative pressure air path 33 selectively provides positive pressure or negative pressure air for the ink cartridge 100. When the positive pressure generator fails and cannot normally work, in the first air path 2, the second interface and the third interface of the first three-way valve 22 are communicated, the first interface of the first three-way valve 22 is closed, and at the moment, the negative pressure pump 21 starts to work, so that negative pressure is formed in the first air path 2. In the second air path 3, the second port and the third port of the second three-way valve 32 are communicated, the first port of the second three-way valve 32 is closed, the positive pressure pump 31 starts to operate, and the positive pressure generator is replaced to provide positive pressure air for the positive and negative pressure air path 33, so that the positive and negative pressure air path 33 selectively provides positive pressure or negative pressure air for the ink cartridge 100. This gas circuit system provides one set of reserve air pressure system, and when having solved air supply equipment and having broken down, inkjet printer will unable normal work, and the printing ink in the inkjet system will unable circulation flow, and then leads to the printing ink caking, leads to the problem of the jam of pipeline or shower nozzle.
Specifically, the ink cartridge 100 includes a secondary ink cartridge and a tertiary ink cartridge, and the first air path 2 is connected into an air chamber above the secondary ink cartridge to provide negative pressure for the secondary ink cartridge to draw ink from an ink tank. The second gas circuit 3 is respectively connected into a gas cavity above the white ink three-level ink box and a gas cavity above the color ink three-level ink box, the three-level ink box supplies ink for the printing nozzle, the negative pressure provided by the interface is used for keeping the ink in the printing nozzle not overflowing, and the positive pressure provided by the interface is used for extruding the ink in the printing nozzle, so that the effects of cleaning the printing nozzle and removing the internal air are achieved.
As to the specific structure of the positive/negative pressure air path 33, optionally, the positive/negative pressure air path 33 includes a third three-way valve 331, a first pressure regulating valve 332, a second pressure regulating valve 333, and a second vacuum generator 334, where the first pressure regulating valve 332 is disposed between a third interface of the second three-way valve 32 and a first interface of the third three-way valve 331, the second pressure regulating valve 333 and the second vacuum generator 334 are sequentially disposed between a third interface of the second three-way valve 32 and a second interface of the third three-way valve 331, and a third interface of the third three-way valve 331 is used for communicating the ink cartridge 100; the first port of the second three-way valve 32 can be communicated with one of the second port and the third port; the first port of the third three-way valve 331 can alternatively communicate with the second port and the third port. In this embodiment, when the positive pressure generator of the air path system of the inkjet printer normally operates, in the second air path 3, the first port and the third port of the second three-way valve 32 are communicated, the second port of the second three-way valve 32 is closed, when positive pressure and negative pressure are required to be provided by the positive and negative pressure circuit, the first port and the third port of the third three-way valve 331 are communicated, the second port of the third three-way valve 331 is closed, when negative pressure is required to be provided by the positive and negative pressure circuit, the second port and the third port of the third three-way valve 331 are communicated, and the first port of the third three-way valve 331 is closed. When the positive pressure generator fails and cannot normally work, in the second gas path 3, the second port and the third port of the second three-way valve 32 are communicated, the first port of the second three-way valve 32 is closed, the positive pressure pump 31 starts to work and provides positive pressure gas, when positive pressure is required to be provided by the positive and negative pressure gas path 33, the first port and the third port of the third three-way valve 331 are communicated, the second port of the third three-way valve 331 is closed, when negative pressure is required to be provided by the positive and negative pressure gas path 33, the second port and the third port of the third three-way valve 331 are communicated, and the first port of the third three-way valve 331 is closed.
Optionally, the first air path 2 further includes a first two-way valve 24, a first air storage tank 25 and a first pressure gauge 26, the first two-way valve 24 and the first air storage tank 25 are sequentially connected in series between the first three-way valve 22 and the ink cartridge 100, and the first pressure gauge 26 monitors the pressure in the first air storage tank 25. In this embodiment, the first air tank 25 is used to eliminate air flow fluctuation in the pipeline and stabilize the air pressure in the pipeline, so that the air pressure in the pipeline is maintained in a stable pressure range. When the negative pressure value in the first air storage tank 25 is smaller than the set negative pressure value, the first two-way valve 24 is in a communication state, and at this time, the first vacuum generator 23 or the negative pressure pump 21 continues to provide negative pressure for the first air storage tank 25; when the negative pressure value in the first air tank 25 reaches its set negative pressure value, the first two-way valve 24 is in the off state. The first pressure gauge 26 is used to monitor the pressure value in the first air tank 25.
Optionally, the positive/negative pressure air path 33 further includes a second two-way valve 335, a second air storage tank 336 and a second pressure gauge 337, the second two-way valve 335 and the second air storage tank 336 are sequentially connected in series between the second vacuum generator 334 and the third three-way valve 331, and the second pressure gauge 337 monitors the pressure in the second air storage tank 336. In this embodiment, the second air tank 336 is used to eliminate air flow fluctuation in the pipeline and stabilize the pipeline air pressure, so that the pipeline air pressure is maintained in a stable pressure range. When the negative pressure value in the second air storage tank 336 is smaller than the set negative pressure value, the second two-way valve 335 is in a communication state, and at this time, the second vacuum generator 334 continues to provide negative pressure for the second air storage tank 336; when the negative pressure value in the second air tank 336 reaches its set negative pressure value, the second two-way valve 335 is in the off state. The second pressure gauge 337 is used to monitor the pressure within the second air reservoir 336.
Optionally, the first air path 2 further comprises a third pressure regulating valve 27, and the third pressure regulating valve 27 is disposed between the first vacuum generator 23 and the positive pressure generator. In this embodiment, the third pressure regulating valve 27 can regulate the pressure value of the air pressure acting on the first vacuum generator 23, and thus regulate the magnitude of the negative pressure generated by the first vacuum generator 23.
Optionally, a third air path 4 is further included, the third air path 4 includes a fourth pressure regulating valve 41, a third vacuum generator 42 and a third pressure gauge 43, the positive pressure generator, the fourth pressure regulating valve 41 and the third vacuum generator 42 are connected in sequence, and the third pressure gauge 43 is used for measuring the pressure at the outlet of the third vacuum generator 42. In this embodiment, since other modules 200 in the inkjet printer need to provide negative pressure, such as a degassing membrane, the system is further provided with a third air path 4, the positive pressure generator provides positive pressure air for the third vacuum generator 42, and the third vacuum generator 42 operates to generate negative pressure. The fourth pressure regulating valve 41 can regulate the pressure value of the air pressure acting on the third vacuum generator 42, thereby regulating the magnitude of the negative pressure generated by the third vacuum generator 42. The third pressure gauge 43 is used for monitoring the negative pressure generated by the third vacuum generator 42.
Optionally, the third air path 4 further includes two third two-way valves 44, and the two third two-way valves 44 are disposed at both sides of the third vacuum generator 42. In this embodiment, when the third air path 4 does not need to be operated, the third two-way valve 44 close to the fourth pressure regulating valve 41 is closed to stop the operation of the third vacuum generator 42, and the other third two-way valve 44 is closed to prevent external air from entering the module connected to the second negative pressure line from the third vacuum generator 42.
Optionally, a filter assembly 11 is further included, and the filter assembly 11 filters the positive pressure gas generated by the positive pressure generator. In order to prevent impurities, moisture and the like in the positive pressure gas from entering the pneumatic system and further damaging components in the system. In this embodiment, the filter assembly 11 filters the pressurized gas. Specifically, the filter assembly 11 includes a droplet separator 111 and a coupling 112 connected in series in this order. The doublet 112 includes a filter pressure reducing valve and an oil mist separator. The filtering and reducing valve is used for cleaning positive pressure gas, can filter moisture and dust particles in the positive pressure gas and prevent the moisture and the dust particles from entering a pneumatic element and an ink path along with the positive pressure gas. The filtering and reducing valve can also stabilize the positive pressure gas, so that the positive pressure gas is in a constant pressure state, and the damage to hardware such as a valve, a sensor and the like due to sudden change of the positive pressure gas pressure can be reduced. The oil mist separator is used for separating oil mist particles in the gas and ensuring that the positive pressure gas entering the ink path is kept clean.
Alternatively, the second air path 3 is provided in plurality. In this embodiment, the ink cartridge 100 includes a second-level ink cartridge, a third-level ink cartridge, a nozzle, and the like, and the second air path 3 needs to be connected to the structure, so that the second air path 3 is provided in plurality. Specifically, it may be 2, 3, 4, 5, 6, etc.
Optionally, a pressure sensor 12 is further included, and the pressure sensor 12 is used for monitoring the pressure value of the positive pressure gas generated by the positive pressure generator. In this embodiment, the pressure sensor 12 monitors the pressure value of the positive pressure gas generated by the positive pressure generator, and then determines whether the positive pressure generator is in a normal working state.
Optionally, the inkjet printer further comprises a controller, wherein the controller is electrically connected to each hardware in the air path system of the inkjet printer, so that the working condition of the air path system of the inkjet printer can be detected, and the working state of each hardware in the air path system of the inkjet printer can be controlled.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. An air path system of an ink jet printer, comprising:
a positive pressure generator; for generating a gas at positive pressure;
the first air path (2) comprises a negative pressure pump (21), a first three-way valve (22), a first vacuum generator (23), a first two-way valve (24), a first air storage tank (25) and a first pressure gauge (26), the first vacuum generator (23) is connected between the positive pressure generator and a first interface of the first three-way valve (22) in series, the negative pressure pump (21) is communicated with a second interface of the first three-way valve (22), and a third interface of the first three-way valve (22) is used for communicating an ink box (100); the first port of the first three-way valve (22) is capable of communicating with either the second port or the third port; the first two-way valve (24) and the first air storage tank (25) are sequentially connected in series between the first three-way valve (22) and the ink box (100), and the first pressure gauge (26) monitors the pressure in the first air storage tank (25).
2. The air path system of the ink-jet printer according to claim 1, further comprising a second air path (3), wherein the second air path (3) comprises a positive pressure pump (31), a second three-way valve (32) and a positive and negative pressure air path (33), a first interface of the second three-way valve (32) is communicated with the positive pressure generator, a second interface of the second three-way valve (32) is communicated with the positive pressure pump (31), a third interface of the second three-way valve (32) is communicated with the positive and negative pressure air path (33), and the positive and negative pressure air path (33) selectively provides positive and negative pressure air to the ink cartridge (100).
3. The air path system of the inkjet printer according to claim 2, wherein the positive/negative pressure air path (33) comprises a third three-way valve (331), a first pressure regulating valve (332), a second pressure regulating valve (333), and a second vacuum generator (334), a first pressure regulating valve (332) is disposed between a third interface of the second three-way valve (32) and a first interface of the third three-way valve (331), a second pressure regulating valve (333) and a second vacuum generator (334) are sequentially disposed between a third interface of the second three-way valve (32) and a second interface of the third three-way valve (331), and a third interface of the third three-way valve (331) is used for communicating the ink cartridge (100);
the first connection of the second three-way valve (32) is alternatively communicable with the second connection of the second three-way valve (32) and the third connection of the second three-way valve (32); the first connection of the third three-way valve (331) is alternatively communicable with the second connection of the third three-way valve (331) and the third connection of the third three-way valve (331).
4. The air path system of the ink jet printer as claimed in claim 3, wherein the positive/negative pressure air path (33) further comprises a second two-way valve (335), a second air reservoir (336) and a second pressure gauge (337), the second two-way valve (335) and the second air reservoir (336) being connected in series between the second vacuum generator (334) and the third three-way valve (331), the second pressure gauge (337) monitoring the pressure within the second air reservoir (336).
5. The air circuit system of an inkjet printer according to claim 1, wherein the first air circuit (2) further comprises a third pressure regulating valve (27), the third pressure regulating valve (27) being disposed between the first vacuum generator (23) and the positive pressure generator.
6. The air channel system of an ink jet printer according to claim 1, further comprising a third air channel (4), wherein the third air channel (4) comprises a fourth pressure regulating valve (41), a third vacuum generator (42) and a third pressure gauge (43), the positive pressure generator, the fourth pressure regulating valve (41) and the third vacuum generator (42) are connected in sequence, and the third pressure gauge (43) is used for measuring the pressure at the outlet of the third vacuum generator (42).
7. Air circuit system of an ink jet printer according to claim 6, characterized in that the third air circuit (4) further comprises two third two-way valves (44), the two third two-way valves (44) being arranged on both sides of the third vacuum generator (42).
8. The air path system of an ink jet printer according to claim 1, further comprising a filter assembly (11), wherein the filter assembly (11) filters the positive pressure gas generated by the positive pressure generator.
9. The air passage system of the ink-jet printer according to claim 2, wherein a plurality of positive/negative pressure air passages (33) are provided.
10. The pneumatic system of an ink jet printer according to any one of claims 1-9, further comprising a pressure sensor (12), wherein the pressure sensor (12) is configured to monitor a pressure value of the positive pressure gas generated by the positive pressure generator.
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| CN202111324270.4A CN114103469B (en) | 2021-11-10 | 2021-11-10 | Air channel system of ink-jet printer |
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| CN202111324270.4A CN114103469B (en) | 2021-11-10 | 2021-11-10 | Air channel system of ink-jet printer |
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2021
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