Liquid storage device and liquid ejection equipment

Abstract

The invention relates to a liquid storage device and liquid ejection equipment, the liquid storage device is provided with a liquid containing cavity used for storing liquid, the liquid containing cavity is provided with a communicating part, the liquid storage device further comprises a deformable part with a volume-variable adjusting cavity, and the deformable part is communicated with the liquid containing cavity through the communicating part; the liquid containing cavity and the adjusting cavity form a gas storage space isolated from the atmosphere, and a communicating part is higher than the highest liquid level of the liquid containing cavity; when the air pressure in the liquid accommodating cavity is increased, air in the air storage space flows to the adjusting cavity through the communicating part, so that the volume of the adjusting cavity is increased; and when the air pressure in the liquid containing cavity is reduced, the air in the air storage space flows to the liquid containing cavity through the communicating part, so that the volume of the adjusting cavity is reduced. Therefore, the problem that liquid in the liquid containing cavity leaks due to the air pressure in the liquid containing cavity when the air pressure in the liquid containing cavity is increased can be solved.

Description

Technical Field

[0001] This application relates to the field of inkjet printing technology, and more particularly to a liquid storage device and a liquid ejection device. Background Technology

[0002] Liquid ejection devices (e.g., inkjet printers) have a liquid storage device with a liquid receiving chamber for temporarily storing and supplying liquids such as ink. The liquid receiving chamber has a maximum liquid level, meaning that the amount of liquid that can be held in the liquid receiving chamber will not completely fill the chamber, and the remaining space in the liquid receiving chamber contains air.

[0003] However, during the use of the liquid ejection device, it is affected by changes in temperature and atmospheric pressure. When the temperature rises or the atmospheric pressure drops, the air pressure inside the liquid container increases relative to the atmospheric pressure, causing an imbalance in air pressure inside and outside the liquid container. This leads to liquid leakage from the liquid container, contaminating other components of the liquid ejection device, and also resulting in abnormal liquid consumption. Summary of the Invention

[0004] This application provides a liquid storage device and a liquid ejection device to solve the problem of liquid leakage caused by the imbalance of internal and external air pressure in the liquid storage device.

[0005] In response, this application provides a liquid storage device having a liquid-containing cavity for storing liquid, which has a deformable portion having a volume-variable adjustment cavity located outside the liquid-containing cavity; the liquid-containing cavity has a communicating portion, through which the deformable portion communicates with the liquid-containing cavity, and the liquid-containing cavity and the adjustment cavity form a gas storage space isolated from the atmosphere; the communicating portion is above the highest liquid level of the liquid-containing cavity.

[0006] In one specific embodiment, the deformable part is made of an elastic material, and the deformable part changes the volume of the adjustment cavity by deforming; the connecting part is a non-deformable part.

[0007] In one specific embodiment, when the gas pressure in the liquid containing cavity increases, the gas in the gas storage space flows to the regulating cavity through the connecting portion, thereby increasing the volume of the regulating cavity; when the gas pressure in the liquid containing cavity decreases, the gas in the gas storage space flows to the liquid containing cavity through the connecting portion, thereby decreasing the volume of the regulating cavity.

[0008] In one specific embodiment, the number of liquid-containing cavities is multiple, the number of deformable parts is not less than the number of liquid-containing cavities, each liquid-containing cavity is provided with the communicating part, and each liquid-containing cavity is connected to at least one of the deformable parts.

[0009] In one specific embodiment, the liquid receiving cavity includes a first liquid receiving cavity and a second liquid receiving cavity, wherein the volume of the first liquid receiving cavity is greater than the volume of the second liquid receiving cavity, and the number of deformable parts communicating with the first liquid receiving cavity is greater than the number of deformable parts communicating with the second liquid receiving cavity.

[0010] In one specific embodiment, the connecting portion is disposed on the highest surface of the liquid-containing cavity.

[0011] In one specific embodiment, the number of the connecting parts is multiple, with at least two connecting parts disposed on different walls of the liquid containing cavity. The number of deformable parts is the same as the number of the connecting parts, and each connecting part is connected to one of the deformable parts.

[0012] In one specific embodiment, the connecting part is a connecting pipe, which protrudes from the outer surface of the liquid receiving cavity, with one end of the connecting pipe connected to the liquid receiving cavity and the other end of the connecting pipe connected to the regulating cavity.

[0013] This application provides a liquid ejection device, which includes a liquid storage device as described above.

[0014] In one specific embodiment, the number of liquid storage devices is multiple.

[0015] In one specific embodiment, the plurality of liquid storage devices includes at least a first liquid storage device and a second liquid storage device, the first liquid storage device and the second liquid storage device being connected by a liquid supply pipe, and the liquid in the first liquid storage device can flow into the second liquid storage device through the liquid supply pipe.

[0016] Another embodiment of this application provides a liquid ejection device, the liquid ejection device having the aforementioned liquid storage device, the liquid ejection device having an ink carriage, the liquid storage device being installable to the ink carriage; the liquid ejection device having a liquid connector, the first end of the liquid connector being connected to the connecting pipe, and the second end of the liquid connector being connected to the regulating cavity.

[0017] Preferably, the liquid connector is disposed on the ink carriage.

[0018] In this application, a deformable part is provided, which has a variable-volume regulating cavity. The liquid-containing cavity of the liquid storage device is connected to the regulating cavity through a connecting part to form a gas storage space isolated from the atmosphere. When the gas pressure in the liquid-containing cavity increases, the gas in the gas storage space flows to the regulating cavity through the connecting part, increasing the volume of the regulating cavity to release the gas pressure in the liquid-containing cavity. Conversely, when the gas pressure in the liquid-containing cavity decreases, the gas in the gas storage space flows from the regulating cavity to the liquid-containing cavity through the connecting part, decreasing the volume of the regulating cavity. This solves the problem of liquid leakage in the liquid-containing cavity when the gas pressure increases (or increases relative to the atmosphere), thus preventing contamination of other components due to liquid leakage and avoiding abnormal liquid loss caused by leakage.

[0019] It should be understood that the above general description and the following detailed description are merely exemplary and do not limit this application. Attached Figure Description

[0020] Figure 1 A schematic diagram of the liquid ejection device provided in this application;

[0021] Figure 2 This is a schematic diagram of the structure of a liquid storage device provided in one embodiment of this application;

[0022] Figure 3 for Figure 2 Another perspective view of the liquid storage device;

[0023] Figure 4 for Figure 3 Sectional view along line AA;

[0024] Figure 5 This is a schematic diagram of the liquid storage device and ink carriage assembly provided in another embodiment of this application;

[0025] Figure 6 for Figure 5 Another perspective of the assembly of the liquid storage device and the ink carriage;

[0026] Figure 7 for Figure 6 Sectional view along the AA direction.

[0027] Figure label:

[0028] 1-Ink tank;

[0029] 11-Liquid containment cavity;

[0030] 12-Connecting parts;

[0031] 2-Ink cartridge;

[0032] 3-Deformable part;

[0033] 31-Adjustment Chamber

[0034] 4-Ink car;

[0035] 41-Liquid connector;

[0036] 5-Liquid supply pipe;

[0037] 6-Liquid ejection equipment.

[0038] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. Detailed Implementation

[0039] To better understand the technical solution of this application, the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0040] It should be understood that the described embodiments are merely some, not all, of the embodiments in this application. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0041] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The singular forms “a,” “the,” and “the” used in the embodiments of this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0042] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0043] It should be noted that the directional terms such as "upper," "lower," "left," and "right" described in the embodiments of this application are used to describe the angles shown in the accompanying drawings and should not be construed as limiting the embodiments of this application. Furthermore, in the context, it should be understood that when it is mentioned that an element is connected "upper" or "lower" to another element, it can be directly connected to the other element "upper" or "lower," or indirectly connected to the other element "upper" or "lower" through an intermediate element.

[0044] Liquid ejection devices (e.g., inkjet printers) have a liquid storage device with a liquid receiving chamber for temporarily storing and supplying liquids such as ink.

[0045] To ensure a normal supply of liquid in the liquid storage device, the liquid container has a maximum liquid level, meaning the liquid in the liquid container will not exceed this level. As a result, the liquid container will not be completely filled with liquid, and the remaining space will be filled with air.

[0046] Under normal circumstances, the air pressure in the liquid storage chamber is close to the ambient air pressure. When the pressure difference is small, both the air and liquid in the liquid storage chamber are in a stable state, and the liquid storage device can stably supply liquid to the liquid ejection device.

[0047] However, in certain situations, the pressure difference between the air pressure in the liquid reservoir and the ambient air pressure can increase significantly. For example, when the temperature of the liquid storage device rises, the air in the liquid reservoir expands due to heat, causing the air pressure in the liquid reservoir to be higher than the ambient air pressure. Similarly, when the liquid storage device is placed in areas with thin atmospheres (such as high-altitude regions or during air transport), the ambient air pressure decreases, resulting in an air pressure in the liquid reservoir that is higher than the ambient air pressure. Because the air pressure in the liquid reservoir is higher than the ambient air pressure, the liquid stored in the liquid reservoir flows out through the liquid outlet under pressure, causing liquid leakage. For liquid ejection devices such as inkjet printers, whose liquid storage devices contain ink and other printing materials, ink leakage can contaminate other components of the inkjet printer and cause abnormal ink consumption, severely impacting the user experience.

[0048] To address the aforementioned issues, this application provides the following solution:

[0049] Example 1

[0050] This embodiment provides a liquid storage device; specifically, refer to... Figures 2 to 4 The liquid storage device is an ink tank 1, which can be installed on the frame of an ink tank inkjet printer. The ink tank 1 has a liquid receiving cavity 11 for storing ink and other printing materials. The ink tank 1 also has an ink filling port and an ink outlet. Users can use an ink filling device to add ink from the ink filling port into the liquid receiving cavity 11. The ink can be temporarily stored in the liquid receiving cavity 11. When the inkjet printer is printing, the ink in the liquid receiving cavity 11 is supplied to the print head to achieve printing.

[0051] To ensure the reliability of ink storage and supply, the liquid reservoir 11 has a maximum liquid level. The maximum amount of liquid added to the liquid reservoir 11 will not exceed this maximum liquid level. Under normal placement, the ink stored in the liquid reservoir 11 will not exceed the maximum liquid level, thus preventing the ink from filling the entire space of the liquid reservoir 11, and the remaining space of the liquid reservoir 11 will be filled with air. To solve the problem of ink leakage caused by the pressure difference between the gas and the atmosphere in the liquid reservoir 11, a connecting part 12 is provided in the liquid reservoir 11. The connecting part 12 can be a non-deformable structure such as a through hole or a connecting pipe, allowing the gas in the liquid reservoir 11 to pass through the connecting part 12. The ink tank 1 also has a deformable part 3, with one end of the connecting part 12 connected to the liquid reservoir 11 and the other end connected to the deformable part 3.

[0052] The deformable part 3 can be made of a polymer material with good elasticity and airtightness. This design does not specifically limit the material of the deformable part 3, as long as it can be deformable and prevent gas passage. In one example given in this embodiment, the deformable part 3 can be an airbag or a balloon. An adjustment cavity 31 is formed inside the deformable part 3. The connecting part 12 communicates with the adjustment cavity 31 of the deformable part 3, thereby connecting the liquid containing cavity 11, the connecting part 12, and the adjustment cavity 31, forming a gas storage space isolated from the ambient atmosphere. Gas in the gas storage space can flow from the liquid containing cavity 11 through the connecting part 12 to the adjustment cavity 31, or vice versa.

[0053] In this way, when the ink tank 1 is in a high-temperature environment or a low-ambient-pressure environment, the gas pressure in the gas storage space formed by the liquid containment chamber 11, the connecting part 12, and the regulating chamber 31 is higher than the ambient pressure. The gas in the gas storage space expands, the deformable part 3 deforms, and the regulating chamber 31 enlarges. The gas in the liquid containment chamber 11 flows to the regulating chamber 31 through the connecting part 12. Because the regulating chamber 31 enlarges, the total space of the gas storage space increases, causing the internal pressure of the gas storage space to decrease to approximately the same as the ambient pressure. When the ink tank 1 is in a low-temperature environment or a high-ambient-pressure environment, the gas pressure in the gas storage space formed by the liquid containment chamber 11, the connecting part 12, and the regulating chamber 31 is lower than the ambient pressure. The deformable part 3 deforms, and the regulating chamber 31 shrinks. The gas in the regulating chamber 31 flows to the liquid containment chamber 11 through the connecting part 12. Because the regulating chamber 31 shrinks, the total space of the gas storage space decreases, causing the internal pressure of the gas storage space to increase to approximately the same as the ambient pressure. Therefore, regardless of whether the ambient air pressure in the environment where the ink tank 1 is located increases or decreases, the gas pressure in the gas storage space formed by the liquid receiving chamber 11, the connecting part 12, and the regulating chamber 31 can be automatically adjusted to be basically the same as the ambient air pressure. This avoids liquid leakage caused by excessively high air pressure in the liquid receiving chamber 11, and also avoids external liquid / gas flowing back into the liquid receiving chamber 11 from the ink outlet due to excessively low air pressure in the liquid receiving chamber 11.

[0054] In this embodiment, the adjustment cavity 31 of the deformable part 3 is disposed outside the liquid containing cavity 11. In this way, the adjustment cavity 31 will not occupy the space of the liquid containing cavity 11, thereby avoiding the reduction of the amount of ink that the liquid containing cavity 11 can hold due to the adjustment cavity 31.

[0055] In this embodiment, in order to ensure that the gas in the liquid containing cavity 11 can flow to the regulating cavity 31 through the connecting part 12, while ensuring that the liquid in the liquid containing cavity 11 does not flow to the regulating cavity 31 through the connecting part 12, the connecting part 12 should be positioned higher than the highest liquid level in the liquid containing cavity 11.

[0056] Furthermore, the connecting part 12 is located on the highest surface of the liquid containing cavity 11. Since the liquid in the liquid containing cavity 11 is not higher than the highest liquid level, and the connecting part 12 is located on the highest surface of the liquid containing cavity 11, it can be ensured that the ink in the liquid containing cavity 11 is difficult to enter the connecting part 12. This can prevent ink from entering the connecting part 12 or even the regulating cavity 31 when the inkjet printer or ink tank 1 is moved, thus avoiding the problem of the connecting part 12 and the regulating cavity being contaminated or blocked.

[0057] Optionally, the liquid-containing cavity 11 can be provided with multiple connecting parts 12, each connecting part 12 being connected to a deformable part 3. Thus, compared to providing only a single connecting part 12 and a single deformable part 3, the speed of air pressure balancing can be accelerated, solving the problem of slow air pressure balancing in large-volume ink tanks 1.

[0058] Furthermore, when providing multiple connecting portions 12 and multiple deformable portions 3 corresponding to the multiple connecting portions 12, at least two connecting portions 12 can be provided on different walls of the liquid containing cavity 11, thereby allowing the multiple deformable portions 3 to be staggered and avoiding the multiple deformable portions 3 from simultaneously increasing in volume and thus occupying space against each other. For example, the liquid containing cavity 11 may have multiple top surfaces of different heights or inclined surfaces. In this case, the multiple connecting portions 12 can be provided on different top surfaces or inclined surfaces, thereby increasing the distance between the multiple deformable portions 3 corresponding to the multiple connecting portions 12 and avoiding them occupying space against each other.

[0059] Optionally, a plurality of liquid-containing chambers 11 can be provided in an ink tank 1. These chambers can be used to store inks of different colors / materials or other liquids. For example, an integrated ink tank 1 has four liquid-containing chambers 11 for storing four different colors of ink. In this embodiment, each liquid-containing chamber 11 is connected to at least one connecting portion 12 and a deformable portion 3 corresponding to the at least one connecting portion 12. When the volumes of the plurality of liquid-containing chambers 11 are different, or the physical / chemical properties of the stored liquids are different, the number of connecting portions 12 and the number of deformable portions 3 corresponding to the connecting portions 12 required for each liquid-containing chamber 11 can be different. Specifically, the plurality of liquid-containing chambers 11 includes at least a first containing chamber and a second containing chamber. The first containing chamber and the second containing chamber store different liquids, and the number of deformable portions 3 connected to the first containing chamber is greater than the number of deformable portions 3 connected to the second liquid containing chamber. Taking the aforementioned integrated ink tank 1 with four liquid receiving chambers 11 for storing four different colors of ink as an example, the four liquid receiving chambers 11 can be one black ink receiving chamber (first receiving chamber) and three color ink receiving chambers (second receiving chambers). The three color ink receiving chambers are used to store three different colors of color ink. The black ink stored in the black ink receiving chamber (first receiving chamber) is used for black and white printing and color printing, while the color ink stored in the three color ink receiving chambers (second receiving chambers) is used for color printing. Therefore, the consumption of black ink is greater than that of color ink. In order to reduce the frequency of ink refilling by users, the black ink receiving chamber... The first receiving cavity is configured to have a larger volume than the color ink receiving cavity (second receiving cavity). In this state, the number of connecting portions 12 and deformable portions 3 corresponding to the connecting portions 12 in the black ink receiving cavity (first receiving cavity) is greater than the number of connecting portions 12 and deformable portions 3 corresponding to the connecting portions 12 in the color ink receiving cavity (second receiving cavity). For example, the black ink receiving cavity (first receiving cavity) can be provided with two connecting portions 12 and two deformable portions 3, and each color ink receiving cavity (second receiving cavity) can be provided with one connecting portion 12 and one deformable portion 3. In this way, the air pressure balance effect of each ink receiving cavity is achieved. It is easy to understand that those skilled in the art can flexibly select the number of liquid receiving cavities 11 according to the different liquids to be stored, and can flexibly select the number of connecting portions 12 and deformable portions 3 corresponding to the connecting portions 12 connected to different liquid receiving cavities 11. No limitation is made here.

[0060] To facilitate the installation of the deformable part 3, in one embodiment, the connecting part 12 is a connecting pipe, and the deformable part 3 is an airbag. The connecting part 12 is a tubular structure extending away from the liquid receiving cavity 11. One end of the connecting part 12 is connected to the liquid receiving cavity 11, and the deformable part 3 is sleeved on the other end of the connecting part 12. The deformable part 3 can be fixed to the end of the connecting part 12 by means of adhesive, fasteners, snaps, etc. The connecting part 12 can be integrally formed with the wall of the liquid receiving cavity 11, or it can be a separate hollow tubular structure that penetrates the wall of the liquid receiving cavity 11 and connects to the liquid receiving cavity 11.

[0061] Example 2

[0062] refer to Figures 5 to 7 This embodiment provides another liquid storage device, which is an ink cartridge 2. The ink cartridge 2 can be installed on the print head of a liquid ejection device and can supply ink to the print head. The ink cartridge 2 has a liquid receiving cavity 11 for storing ink.

[0063] Similar to Embodiment 1, the ink cartridge 2 in this embodiment also has a maximum liquid level. The ink stored in the liquid receiving cavity 11 cannot completely fill the liquid receiving cavity 11, and the remaining space in the liquid receiving cavity 11 is occupied by air. When the pressure difference between the air pressure inside the liquid receiving cavity 11 and the atmospheric pressure is large, the same ink leakage or backflow problem as in Embodiment 1 will occur. To solve the above problem, the ink cartridge 2 in this embodiment is provided with a connecting part 12 in the liquid receiving cavity 11. The connecting part 12 can be a non-deformable structure such as a through hole or a connecting pipe, and the gas in the liquid receiving cavity 11 can pass through the connecting part 12. The ink tank 1 is also provided with a deformable part 3. One end of the connecting part 12 is connected to the liquid receiving cavity 11, and the other end is connected to the deformable part 3. The structure and arrangement of the connecting part 12 and the deformable part 3 are the same as in Embodiment 1, and will not be described again here.

[0064] Example 3

[0065] refer to Figures 1 to 7 This embodiment provides a liquid ejection device, which is an inkjet printer.

[0066] The inkjet printer includes a frame, a media transport assembly, an ink tank 1, a liquid supply pipe 5, and an ink carriage 4. The media transport assembly has a media transport path arranged in the longitudinal direction through the frame. The media transport path runs through the entire frame. The media transport assembly includes a media storage tray, a transport roller assembly, and a paper discharge tray. The transport roller assembly includes a paper feed roller, a paper delivery roller, and a discharge roller. The paper feed roller is used to pick up the paper stored on the media storage tray and feed it into the media transport path. After receiving the media pushed by the paper feed roller, the paper delivery roller causes the media to be transported along the media transport path and discharged onto the paper discharge tray via the discharge roller.

[0067] Ink cartridge 2 is mounted on print head 4, which moves along a transverse direction perpendicular to the longitudinal direction on the print head track. Thus, ink cartridge 2 also moves transversely under the carrying of print head 4. When the media moves longitudinally along the media transport path, ink cartridge 2 moves transversely, and during the transverse movement, the nozzle of the print head sprays liquid onto the media to form an image on the media.

[0068] The ink tank 1 includes a liquid chamber and a liquid inlet connected to the liquid chamber. The liquid inlet is provided with a cap that can seal the liquid inlet. The liquid chamber stores liquid for delivery to the ink cartridge 2. External liquid can be added to the liquid chamber through the liquid inlet.

[0069] The liquid supply pipe 5 is located between the ink tank 1 and the ink cartridge 2. It has a first connecting end that can connect to the ink tank 1 and a second connecting end that can connect to the ink cartridge 2. It includes a fixed part and a flexible part. The fixed part is fixed to the frame by a frame or the ink tank 31 and other structures. The flexible part is made of flexible material and can be flexibly bent. Since the second connecting end is connected to the ink cartridge 2, when the ink cartridge 2 moves with the moving base, the flexible part forms a deformable bending part to adapt to the movement process of the moving base.

[0070] The ink carriage 4 includes a bracket and an ink carriage cover connected to the bracket. The bracket has a container storage part, and the ink cartridge 2 is fixed in the container storage part. The ink carriage cover has a liquid connector 41, which is connected to the second connection end of the liquid supply pipe 5. The liquid connector 41 has a valve. When the ink carriage cover is closed on the bracket, the valve allows liquid to enter the ink cartridge 2 from the second connection end.

[0071] Furthermore, the ink tank 1 in this embodiment is the same as the ink tank 1 in Embodiment 1, and the ink tank 1 can be installed on the frame of the liquid ejection device.

[0072] Alternatively, the ink cartridge 2 in this embodiment is the ink cartridge 2 of embodiment 2, and the ink cartridge 2 can be installed on the ink carriage 4 of the liquid ejection device.

[0073] Of course, the liquid ejection device of this embodiment can simultaneously set up the ink tank 1 of embodiment 1 and the ink cartridge 2 of embodiment 2. The ink tank 1 and the ink cartridge 2 are connected by the ink supply pipe 5 so that the liquid stored in the ink tank 1 can be supplied to the ink cartridge 2.

[0074] In one alternative approach, the number of ink tanks 1 can be multiple. For example, a liquid ejection device can include an ink cartridge 1 for storing black ink and ink cartridges 1 for storing three colors of ink. The ink cartridges 1 for storing colors of ink can also be configured as multiple ink tanks 1, with one ink tank 1 corresponding to each color of ink.

[0075] In one alternative approach, there can be multiple ink cartridges 2. For example, the liquid ejection device can include ink cartridge 2 for storing black ink and ink cartridge 2 for storing three colors of ink. Each ink cartridge 2 corresponds to a printhead, and multiple ink cartridges 2 are mounted together on the printhead carriage 4 to print as the printhead carriage 4 moves.

[0076] When the overall environment of the liquid ejection device changes, the liquid storage device (ink tank and / or ink cartridge) inside the liquid ejection device can automatically achieve air pressure balance, avoid ink leakage and contamination of other parts of the liquid ejection device, and at the same time avoid abnormal ink consumption, ensuring that the liquid ejection device works normally in different environments.

[0077] Example 4

[0078] This embodiment provides another liquid ejection device, namely an inkjet printer. Specifically, the inkjet printer of this embodiment has an ink cartridge 2 as in Embodiment 2. The connecting part 12 of the ink cartridge 2 is an upwardly extending connecting tube. The ink cartridge 2 is mounted on the printhead carriage 4. The connecting part 12 of the ink cartridge 2 also serves as an ink channel for the liquid connector 41 to add ink to the ink cartridge 2. Therefore, one end of the connecting part 12 is connected to the liquid receiving cavity 11, and the other end of the connecting part 12 is connected to the liquid connector 41. In this embodiment, the deformable part 3 is not directly sleeved on the connecting part 12, but is connected to the liquid connector 41. That is, the deformable part 3 is connected to the connecting part 12 through the liquid connector 41, realizing the interconnection of the liquid receiving cavity 11, the connecting part 12, the liquid connector 41, and the deformable part 3. Furthermore, the liquid connector 41 can be set on the printhead carriage, for example, on the printhead carriage cover. In this way, interference with the printhead carriage cover of the printhead carriage 4 is avoided when the deformable part 3 is directly set on the connecting part 12, and volume can be saved.

[0079] This embodiment provides another liquid ejection device with other components and functions that are the same as those in Embodiment 3, and will not be repeated here.

[0080] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A liquid storage device having a liquid receiving cavity for storing liquid, characterized in that, It has a deformable part, the deformable part having a volume-variable adjustment cavity, the adjustment cavity being located outside the liquid-containing cavity; The liquid-containing cavity has a communicating portion, and the deformable portion communicates with the liquid-containing cavity through the communicating portion. The liquid-containing cavity and the regulating cavity form a gas storage space isolated from the atmosphere. The connecting portion is above the highest liquid level of the liquid-containing cavity.

2. The liquid storage device according to claim 1, characterized in that, The deformable part is made of an elastic material, and the deformable part changes the volume of the adjustment cavity by deforming; the connecting part is a non-deformable part.

3. The liquid storage device according to claim 2, characterized in that, When the gas pressure in the liquid containment cavity increases, the gas in the gas storage space flows to the regulating cavity through the connecting part, thereby increasing the volume of the regulating cavity; When the gas pressure in the liquid containment cavity decreases, the gas in the gas storage space flows to the liquid containment cavity through the connecting part, thereby reducing the volume of the regulating cavity.

4. The liquid storage device according to claim 1, characterized in that, The number of liquid-containing cavities is multiple, the number of deformable parts is not less than the number of liquid-containing cavities, each liquid-containing cavity is provided with the connecting part, and each liquid-containing cavity is connected to at least one of the deformable parts.

5. The liquid storage device according to claim 4, characterized in that, The liquid containment cavity includes a first liquid containment cavity and a second liquid containment cavity. The volume of the first liquid containment cavity is greater than the volume of the second liquid containment cavity, and the number of deformable parts communicating with the first liquid containment cavity is greater than the number of deformable parts communicating with the second liquid containment cavity.

6. The liquid storage device according to claim 1, characterized in that, The connecting portion is located on the highest surface of the liquid-containing cavity.

7. The liquid storage device according to claim 1, characterized in that, The number of the connecting parts is multiple, with at least two connecting parts disposed on different walls of the liquid containing cavity. The number of deformable parts is the same as the number of the connecting parts, and each connecting part is connected to one of the deformable parts.

8. The liquid storage device according to claim 1, characterized in that, The connecting part is a connecting pipe, which protrudes from the outer surface of the liquid receiving cavity. One end of the connecting pipe is connected to the liquid receiving cavity, and the other end of the connecting pipe is connected to the regulating cavity.

9. A liquid ejection device, characterized in that, The liquid ejection device includes the liquid storage device as described in any one of claims 1 to 8.

10. The liquid storage device according to claim 9, characterized in that, The number of liquid storage devices is multiple.

11. The liquid storage device according to claim 10, characterized in that, The plurality of liquid storage devices includes at least a first liquid storage device and a second liquid storage device. The first liquid storage device and the second liquid storage device are connected by a liquid supply pipe, and the liquid in the first liquid storage device can flow into the second liquid storage device through the liquid supply pipe.

12. A liquid ejection device, characterized in that, The liquid ejection device has the liquid storage device as described in claim 8, the liquid ejection device has an ink carriage, and the liquid storage device can be installed to the ink carriage; The liquid ejection device has a liquid connector, the first end of which can be connected to the connecting pipe, and the second end of which can be connected to the regulating chamber.

13. The liquid storage device according to claim 12, characterized in that, The liquid connector is located on the printing press.

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