A control method for a liquid ejection device and a computer-readable storage medium

Abstract

This application relates to a control method for a liquid ejection device and a computer-readable storage medium. The liquid ejection device has a body, which includes a first container, a second container, a liquid delivery pipeline, and a suction assembly. The first and second containers are connected via the liquid delivery pipeline. The first container is equipped with a printhead, and the suction assembly can suction the printhead. When the liquid ejection device is used for the first time, the control method includes controlling the suction assembly to suction the printhead, thereby suctioning gas from the liquid delivery pipeline and the first container. In this application, as the suction assembly suctions the printhead, gas is extracted from the liquid delivery pipeline and the first container. Ink in the ink tank fills the liquid delivery pipeline and the first container under negative pressure, thus establishing a continuous ink supply system between the first and second containers. This method has the advantages of convenient operation, high success rate in establishing continuous ink supply, short processing time, and high speed.

Description

Technical Field

[0001] This application relates to the field of inkjet printing technology, and more particularly to a control method for a liquid ejection device and a computer-readable storage medium. Background Technology

[0002] Liquid ejection devices (such as inkjet printers) have printheads that record images and text by ejecting tiny droplets of ink from the nozzles of the printhead onto a printing medium such as paper.

[0003] In the prior art, the ink cartridge and printhead of an inkjet printer are initially separate. When used for the first time, a continuous ink supply system needs to be established between the ink cartridge and printhead through a pump, suction tube, or automatic siphon. This process is cumbersome and time-consuming. Summary of the Invention

[0004] This application provides a control method for a liquid ejection device and a computer-readable storage medium to solve the problems of cumbersome and time-consuming operation in establishing a continuous power supply.

[0005] This application provides a control method for a liquid ejection device. The liquid ejection device has a body, which is provided with a first container, a second container, a liquid delivery pipeline, and a suction component. The first container and the second container are connected through the liquid delivery pipeline. The first container is provided with a print head, and the suction component is capable of suctioning the print head. When using the liquid ejection device for the first time, the control method of the liquid ejection device includes: The suction assembly is controlled to suction the printhead to draw gas from the liquid delivery pipeline and the first container.

[0006] In one possible implementation, the suction assembly includes: a suction section; the body is provided with a control component; the control component controls the suction section to alternately switch between a working state and a stopped state.

[0007] In one possible implementation, the suction unit is powered by a power source, and the control component includes a controller and a switch, the controller being configured to generate a drive signal, the switch being controlled by the drive signal to alternately turn on or off the electrical connection between the suction unit and the power source.

[0008] In one possible implementation, the driving signal is a pulse width modulation signal.

[0009] In one possible implementation, the body is equipped with a pressure sensor; The steps of controlling the suction assembly to suction the printhead include: When the pressure value detected by the pressure sensor is greater than or equal to the first preset pressure, the suction unit is controlled to switch to the stop state; When the pressure value detected by the pressure sensor is less than or equal to the second preset pressure, the suction unit is controlled to switch to the working state; The first preset pressure is greater than the second preset pressure.

[0010] In one possible implementation, the pressure sensor is disposed inside the first container; And / or, the suction assembly further includes: a sealing portion, the sealing portion being able to form a sealed space with the printhead, the pressure sensor being disposed in the sealing portion and being able to be located within the sealed space.

[0011] In one possible implementation, the body is equipped with a pressure sensor; The control method for the liquid ejection device further includes: When the pressure value detected by the pressure sensor decreases by less than a preset value within a second preset time period, the suction component is controlled to stop suctioning the print head.

[0012] In one possible implementation, the control method for the liquid ejection device further includes: When the suction component suctions the print head for a duration longer than a first preset duration, the suction component is controlled to stop suctioning the print head.

[0013] In one possible implementation, the body is equipped with an ink volume sensor; After the liquid dispensing device is powered on, if the ink volume sensor detects that the ink volume in the first container is less than the preset ink volume, it is determined that the liquid dispensing device is being used for the first time.

[0014] This application provides a computer-readable storage medium including a stored program, wherein the program, when running, controls the device where the computer-readable storage medium is located to execute the method described above.

[0015] In this application, as the suction component draws the printhead, the gas in the liquid delivery pipeline and the first container is extracted, and the ink in the ink tank fills the liquid delivery pipeline and the first container under negative pressure, thereby establishing a continuous ink supply between the first container and the second container. This has the advantages of convenient operation, high success rate of establishing continuous ink supply, short time consumption, and fast speed.

[0016] 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

[0017] Figure 1 A schematic diagram of the structure of a liquid ejection device provided in this application in some specific embodiments; Figure 2 for Figure 1 A schematic diagram of the structure of the first container in some specific embodiments; Figure 3 for Figure 1 A partial structural schematic diagram of the liquid ejection device in some specific embodiments; Figure 4 for Figure 3 A schematic diagram of the sealing part, suction part, suction tube and driving part in the middle; Figure 5 for Figure 4 A schematic diagram of the suction section and part of the suction tube; Figure 6 This is a schematic diagram showing the flow rate and time of the suction section in some specific embodiments; Figure 7 for Figure 4 A schematic diagram of the sealing part and the driving part in the middle; Figure 8 for Figure 1 A structural diagram of part of the main body and part of the suction components; Figure 9 for Figure 7 Exploded view of the sealed main body in the image.

[0018] Figure label: 1-Main body; 11-Baffle; 2-First container; 21-Box body; 22-Print head; 3-Second container; 4-Liquid delivery pipeline; 5-Sealing part; 51-Sealing cover; 52-Mounting bracket; 53-Moving bracket; 54-First elastic element; 55-Second elastic element; 56-Sponge; 6-Suction section; 61-Collection unit; 62-Suction pump; 63-Connecting pipe; 7-Pipette; 8-Drive unit.

[0019] 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

[0020] 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.

[0021] 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.

[0022] 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.

[0023] 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, and B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0024] 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.

[0025] Figure 1 The diagram shows a schematic representation of the liquid ejection device provided in this application in some specific embodiments. For example... Figure 1 As shown, for ease of description, the length direction of the liquid ejection device is defined as the first direction X, the width direction as the second direction Y, and the height direction as the third direction Z. The first direction X, the second direction Y, and the third direction Z are all mutually perpendicular. It can be understood that in other embodiments, the first direction X, the second direction Y, and the third direction Z may not be mutually perpendicular.

[0026] The liquid ejection device has a body 1, which is provided with a first container 2, a second container 3 and a liquid delivery pipeline 4. The first container 2 and the second container 3 are connected through the liquid delivery pipeline 4, and the second container 3 can replenish ink to the first container 2 through the liquid delivery pipeline 4.

[0027] Figure 2 It shows Figure 1The diagram below shows the structure of the first container in some specific embodiments. The first container 2 includes a housing 21, which can store ink. A printhead 22 is disposed at the bottom of the housing 21. The ink in the housing 21 can be supplied to the printhead 22 and ejected by the printhead 22 onto the printing medium. As the printhead 22 moves relative to the body 1 along the first direction X, the ink ejected by the printhead 22 forms the image to be printed on the printing medium.

[0028] Specifically, the machine body 1 is equipped with an ink carriage, which can move relative to the machine body 1 in the first direction X. The ink carriage has an ink carriage cover, and one end of the liquid delivery pipeline 4 is connected to the ink carriage cover. When the first container 2 is installed on the ink carriage, the ink carriage cover can fix the first container 2. At this time, the liquid delivery pipeline 4 is connected to the first container 2, and the first container 2 can move together with the ink carriage.

[0029] For example, the first container 2 is an ink cartridge, and the second container 3 is an ink tank, with the ink tank having a larger ink capacity than the ink cartridge. When the ink in the ink tank runs out, the ink tank can be replaced or refilled.

[0030] Specifically, when the liquid ejection device is used for the first time, there is no ink in the liquid delivery line 4. A continuous ink supply system needs to be established between the first container 2 and the second container 3. This means that the ink in the second container 3 must completely fill the liquid delivery line 4, so that during printing, the ink in the second container 3 can be continuously supplied to the first container 2 under siphon action. Furthermore, after establishing the continuous ink supply system, the first container 2 is under negative pressure to prevent ink leakage from the print head 22 when printing is not in progress.

[0031] In an existing liquid ejection device, after the first container 2 is initially installed onto the body 1, the user needs to use a special tool (a manual pump similar to a syringe) to cover the print head 22 and then operate the tool to draw fluid from the print head 22 to establish a continuous supply between the first container 2 and the second container 3. Because this operation is cumbersome and different users may have different manual techniques, it is very easy for the continuous supply to fail to be established.

[0032] Another existing liquid ejection device establishes a continuous supply between the first container 2 and the second container 3 by siphoning after the first container 2 is first installed on the body 1. However, this method is slow and time-consuming.

[0033] In this application, the liquid ejection device also has a suction component that can suction the printhead 22.

[0034] The first aspect of this application provides a control method for a liquid ejection device. When using the liquid ejection device for the first time, the control method includes: S1: Control the suction assembly to suction the printhead 22 to draw gas from the liquid delivery pipeline 4 and the first container 2.

[0035] In this step, the suction component draws air from the printhead 22. As the gas in the liquid delivery pipeline 4 and the first container 2 is drawn out, the ink in the ink tank fills the liquid delivery pipeline 4 under negative pressure, thereby establishing a continuous ink supply between the first container 2 and the second container 3. This method has the advantages of convenient operation, high success rate in establishing continuous ink supply, short time consumption, and fast speed.

[0036] Figure 3 It shows Figure 1 The liquid ejection device in the diagram is shown in some specific embodiments as a partial structural schematic diagram. Figure 4 It shows Figure 3 A schematic diagram of the sealing part, suction part, suction tube and driving part.

[0037] like Figure 3 and Figure 4 As shown, the suction assembly includes a sealing part 5, a suction part 6, and a driving part 8. The suction part 6 is connected to the sealing part 5. The body 1 has a suction area, and the print head 22 can move to the suction area along the first direction X. The driving part 8 can drive the sealing part 5 to move to the suction area. In the suction area, a sealed space is formed between the sealing part 5 and the print head 22, and the suction part 6 can suction the print head 22.

[0038] For example, the suction part 6 and the sealing part 5 are connected by a suction tube 7.

[0039] When the suction unit 6 draws ink from the printhead 22, a negative pressure is formed in the sealed space between the sealing part 5 and the printhead 22, thus ensuring smooth suction. At the same time, before the continuous ink supply system is established, the suction unit 6 switches from drawing air to drawing ink, and the sealed space between the sealing part 5 and the printhead 22 can also prevent ink from splashing outside the suction assembly.

[0040] In one specific implementation, the suction unit 6 continuously suctions the print head 22 until the continuous supply is established.

[0041] During this process, as air is extracted from the first container 2 and the liquid delivery pipeline 4, a negative pressure state is created. This negative pressure state drives the ink in the second container 3 to gradually fill the liquid delivery pipeline 4, and then supplies it to the first container 2 through the liquid delivery pipeline 4. At the same time, to ensure that the continuous ink supply system is fully established, some ink will be extracted from the first container 2, thus consuming some ink.

[0042] Specifically, in order to reduce the time required to establish a continuous power supply system, the negative pressure state during the establishment process is stronger than the negative pressure state after the system is established.

[0043] More specifically, during the establishment of the continuous supply system, the negative pressure in the first container 2 is basically maintained at a fixed value, which is defined as the first negative pressure value.

[0044] In another specific embodiment, the suction unit 6 intermittently suctions the print head 22, that is, the suction unit 6 alternately switches between a working state and a stopped state.

[0045] After the suction unit 6 suctions the printhead 22 for a period of time, a negative pressure state exists between the liquid delivery line 4, the first container 2, the printhead 22, and the sealing part 5. At this time, the suction unit 6 switches to a stopped state, and the ink in the second container 3 continues to flow into the liquid delivery line 4 under the action of negative pressure. As ink is replenished, the degree of negative pressure between the liquid delivery line 4, the first container 2, the printhead 22, and the sealing part 5 decreases, and the suction unit 6 switches to a working state again to suction the printhead 22, recreating the negative pressure state.

[0046] As the suction unit 6 alternates between working and stopped states, the ink in the second container 3 gradually fills the liquid delivery pipe 4 and is supplied to the first container 2 through the liquid delivery pipe 4.

[0047] Specifically, during the establishment of continuous power supply, the negative pressure value in the first container 2 changes. When the suction unit 6 is in operation, the negative pressure in the first container 2 gradually increases; when the suction unit 6 is stopped, the negative pressure in the first container 2 gradually decreases.

[0048] More specifically, the continuous ink supply system is established through intermittent suction. When the continuous ink supply system is established, the negative pressure value in the first container 2 is the second negative pressure value. The second negative pressure value is less than the first negative pressure value. Therefore, when the continuous ink supply system is established through intermittent suction, the ink flows out of the printhead 22 at a slower rate than when the continuous ink supply system is established through continuous suction, thereby reducing ink waste.

[0049] In both of the above embodiments, the body 1 is provided with a control component, which controls the suction unit 6 to alternate between working and stopped states, so that the liquid ejection device can automatically control the suction unit 6.

[0050] In some embodiments, the suction unit 6 is powered by a power source, and the control components include a controller and a switch. The controller is configured to generate a drive signal, and the switch is controlled by the drive signal to alternately turn on or off the electrical connection between the suction unit 6 and the power source.

[0051] When the switch connects the suction unit 6 to the power supply, the suction unit 6 is in operation and suctions the print head 22; when the switch disconnects the electrical connection between the suction unit 6 and the power supply, the suction unit 6 is in a stopped state and does not suction the print head 22. Controlling the state of the suction unit 6 according to the drive signal has the advantages of high automation and a good user experience for the liquid ejection device.

[0052] The drive signal contains information about how the suction unit 6 works intermittently, such as the duration of each working state of the suction unit 6 and the duration of each stopped state of the suction unit 6.

[0053] For example, the duration of the suction unit 6 in the working state is always the same, and the duration of the suction unit 6 in the stopped state is always the same. It is understood that in some other embodiments, the duration of the suction unit 6 in the working state may be unequal, and the duration of the suction unit 6 in the stopped state may be unequal.

[0054] Figure 5 It shows Figure 4 A schematic diagram of the suction section and part of the suction tube. (See attached diagram.) Figure 5 As shown, the suction unit 6 includes: a collection member 61, a suction pump 62, and a connecting pipe 63. The suction pump 62 has a liquid inlet and a liquid outlet. The suction pipe 7 is connected to the liquid inlet. One end of the connecting pipe 63 is connected to the liquid outlet, and the other end extends into the collection member 61.

[0055] The liquid and gas drawn from the printhead 22 pass sequentially through the sealing part 5, the suction pipe 7, the suction pump 62, and the connecting pipe 63 into the collection part 61 for storage.

[0056] In one specific implementation, the drive signal is a pre-written signal, and the control component executes a preset control program according to the drive signal to control the suction unit 6.

[0057] For example, the drive signal is a pulse-width modulation (PWM) signal, and the control component can adjust the on / off state of the switching element according to the duty cycle of the PWM signal to control the state of the suction unit 6.

[0058] Specifically, the duty cycle of the PWM signal can be adjusted according to factors such as the viscosity of the ink, the surface tension of the ink, the length of the liquid delivery pipeline 4, the size of the nozzle of the printhead 22, the number of nozzles of the printhead 22, and the height of the first container 2, so as to change the duration of the suction unit 6 in the working state and the duration of the suction unit 6 in the stopped state.

[0059] For example, such as Figure 6As shown, the suction pump 62 is a micro pump with a rated flow rate of V. The micro pump is in operation from 0 to T1, in a stopped state from T1 to T2, in operation from T2 to T3, in a stopped state from T3 to T4, and in operation from T4 to T5… Miniature pumps have the advantages of small size, simple control, and low cost.

[0060] In another specific embodiment, the body 1 is equipped with a pressure sensor, and the drive signal is generated based on the physical quantity detected by the pressure sensor.

[0061] Specifically, the steps for controlling the suction assembly to suction the printhead 22 include: S2: When the pressure value detected by the pressure sensor is greater than or equal to the first preset pressure, control the suction unit 6 to switch to the stop state.

[0062] In this step, the first preset pressure is preset according to the actual situation. When the pressure value detected by the pressure sensor is greater than or equal to the first preset pressure, it indicates that the ink in the second container 3 is flowing to the liquid delivery pipeline 4 at a relatively fast speed, and the negative pressure in the second container 3 is relatively large. Therefore, the suction unit 6 should be controlled to switch to the stop state.

[0063] S3: When the pressure value detected by the pressure sensor is less than or equal to the second preset pressure, control the suction unit 6 to switch to the working state.

[0064] In this step, the second preset pressure is preset according to the actual situation. When the pressure value detected by the pressure sensor is less than or equal to the second preset pressure, it indicates that the ink in the second container 3 flows to the liquid delivery pipeline 4 at a slower speed, and the negative pressure in the second container 3 is small. Therefore, the suction unit 6 should be switched to the working state.

[0065] The first preset pressure is greater than the second preset pressure.

[0066] In some embodiments, a pressure sensor is disposed inside the first container 2, thereby enabling accurate measurement of the pressure inside the first container 2.

[0067] In other embodiments, the pressure sensor is disposed in the sealing part 5 and can be located in the sealed space, so as to indirectly measure the pressure inside the first container 2 without occupying the space inside the first container 2 or affecting the capacity of the first container 2.

[0068] In some other embodiments, a pressure sensor can be provided both inside the first container 2 and in the sealing part 5, so that the pressure state inside the first container 2 can be determined more accurately based on the measurement values ​​of the two pressure sensors.

[0069] In some embodiments, for intermittent suction, the control method for the liquid ejection device further includes: S4: When the pressure value detected by the pressure sensor decreases less than the preset value within the second preset time period, the suction component is controlled to stop suctioning the print head 22.

[0070] In this step, since the air flow rate is greater than the liquid flow rate under the same negative pressure, when the suction unit 6 is stopped and the pressure value detected by the pressure sensor drops less than a preset value within a second preset time period, it indicates that the continuous supply has been established. This method has the advantage of high accuracy.

[0071] The pressure drop within the second preset duration refers to the difference between the pressure value detected by the pressure sensor at the start of the second preset duration and the pressure value detected by the pressure sensor at the end of the second preset duration after the suction unit 6 switches to the stop state. The second preset duration is shorter than the duration during which the suction unit 6 is in the stop state each time, and the preset value is set according to the actual situation.

[0072] In other embodiments, the control method for the liquid ejection device further includes: S5: When the suction component suctions the print head 22 for a duration longer than the first preset duration, control the suction component to stop suctioning the print head 22.

[0073] In this step, the optimal suction time is obtained through multiple experiments and is used as the first preset time. Stopping suction after the first preset time by suctioning the printhead 22 has the advantages of simple control logic and high reliability.

[0074] Specifically, for the intermittent suction method, the first preset duration can be the duration for which the suction unit 6 remains in working state, or it can be the total duration of intermittent suction.

[0075] In some specific embodiments, the main body 1 is equipped with an ink volume sensor; after the liquid dispensing device is powered on, if the ink volume sensor detects that the ink volume in the first container 2 is less than the preset ink volume, it is determined that the liquid dispensing device is being used for the first time. The preset ink volume is set based on experience.

[0076] By incorporating an ink volume sensor, the liquid dispensing device can automatically determine whether it is being used for the first time, eliminating the need for manual operation and improving the user experience.

[0077] In some other embodiments, whether to control the suction component to stop suctioning the printhead 22 can also be determined by the amount of ink in the first container 2.

[0078] In the above embodiments, the controller is also configured to perform a control method for the liquid ejection device.

[0079] Furthermore, when the liquid ejection device is not in use for an extended period, the suction assembly can suction the printhead 22 to prevent residual ink from solidifying and clogging it. If air bubbles appear at the nozzles of the printhead 22, the suction assembly can also be used to suction the printhead 22 to eliminate them.

[0080] The following is a detailed description of the structure of the suction assembly.

[0081] To allow the printhead 22 to enter the suction area, the range of motion of the printhead 22 overlaps with that of the suction area; that is, when viewed along the first direction X, the suction area always overlaps with the printhead 22. When both the printhead 22 and the sealing part 5 are located within the suction area, the sealing part 5 is positioned below the printhead 22 along the third direction Z.

[0082] Specifically, when the liquid ejection device is performing a printing task, the drive unit 8 can drive the sealing part 5 away from the suction area to prevent the sealing part 5 from affecting the print head 22 in performing the printing task.

[0083] More specifically, such as Figure 7 As shown, the sealing part 5 includes a sealing body and a movable frame 53. The sealing body is connected to the movable frame 53, and the driving part 8 is connected to the movable frame 53. The movable frame 53 can support the sealing body and protect it.

[0084] The drive unit 8 can drive the moving frame 53 to move along the second direction Y, so as to move the sealing body closer to or away from the print head 22 along the third direction Z.

[0085] As the sealing body enters the suction area under the action of the moving frame 53, the sealing body gradually approaches the print head 22 along the third direction Z and finally comes into contact with the print head 22, forming a sealed space between the two; as the sealing body leaves the suction area under the action of the moving frame 53, the sealing body moves away from the print head 22 along the third direction Z, so that the sealing body can move away from the print head 22 from below, preventing the two from interfering with each other and affecting each other's movement.

[0086] For example, such as Figure 8 As shown, the body 1 has a baffle 11. When the sealing body moves along the second direction Y with the moving frame 53, the sealing body abuts against the baffle 11, and the baffle 11 prevents the sealing body from continuing to move along the second direction Y. At this time, the drive unit 8 continues to drive the moving frame 53 to move along the second direction Y, and the sealing body and the moving frame 53 move relative to each other along the second direction Y, so that the sealing body slides along the arc-shaped guide groove on the moving frame 53, causing the sealing body to move along the second direction Y while moving along the third direction Z.

[0087] Specifically, the movable frame 53 is shaped like a scoop and has a bottom wall and three side walls. When the sealing body is outside the suction area, a portion of the sealing body protrudes from the movable frame 53 from the position where the side walls are not provided; as the sealing body enters the suction area, the degree to which the sealing body protrudes from the movable frame 53 decreases.

[0088] like Figure 9 As shown, a first elastic element 54 is provided between the sealing body and the movable frame 53. When the sealing part 5 enters the suction area, the degree to which the sealing body protrudes from the movable frame 53 decreases under the action of the baffle 11, and the first elastic element 54 is compressed. When the sealing part 5 leaves the suction area, the degree to which the sealing body protrudes from the movable frame 53 increases under the action of the restoring force of the first elastic element 54, that is, the sealing body moves relative to the movable frame 53 along the second direction Y and descends in the third direction Z.

[0089] The sealing body includes a sealing cover 51 and a mounting bracket 52. The mounting bracket 52 is connected to a movable bracket 53. The sealing cover 51 is located on the side of the mounting bracket 52 away from the movable bracket 53. The sealing cover 51 can move relative to the mounting bracket 52 in the third direction Z, so that the sealing cover 51 can engage with the print head 22 at multiple height positions, thereby reducing the difficulty of engaging the sealing cover 51 with the print head 22 and preventing excessive force between the sealing cover 51 and the print head 22 from damaging the sealing cover 51 or the print head 22.

[0090] Specifically, a second elastic element 55 is provided between the sealing cover 51 and the mounting bracket 52. When the sealing part 5 enters the suction area, the sealing cover 51 contacts the print head 22, and the print head 22 presses the sealing cover 51, causing the sealing cover 51 to descend along the third direction Z. During this process, the second elastic element 55 is compressed. When the sealing part 5 leaves the suction area, the sealing cover 51 separates from the print head 22, and the sealing cover 51 rises along the third direction Z under the restoring force of the second elastic element 55.

[0091] The sealing cover 51 is provided with a mounting groove, and a sponge 56 is placed in the mounting groove. The sponge 56 can absorb the ink remaining in the mounting groove. The through hole at the bottom of the mounting groove can communicate with the suction tube 7, so that the suction pump 62 can draw the printhead 22 connected to the sealing cover 51 through the suction tube 7.

[0092] A second aspect of this application provides a computer-readable storage medium including a stored program, wherein, when the program is running, a control method for controlling the device where the computer-readable storage medium is located to execute a liquid ejection device is provided.

[0093] Computer-readable storage media may be any combination of one or more computer-readable media. A computer-readable medium may be a computer-readable signal medium or a computer-readable storage medium. For example, a computer-readable storage medium may be an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof, but is not limited thereto.

[0094] More specific examples of computer-readable storage media include: electrical connections having one or more wires, portable computer disks, hard disks, random access memory, read-only memory, erasable programmable read-only memory or flash memory, optical fiber, portable compact disk read-only memory, optical storage devices, magnetic storage devices, or any suitable combination of the foregoing.

[0095] In this application, a computer-readable storage medium can be any tangible medium that contains or stores a program that can be used by or in conjunction with an instruction execution system, apparatus, or device (e.g., a controller).

[0096] Computer-readable signal media may include data signals propagated in baseband or as part of a carrier wave, carrying computer-readable program code. Such propagated data signals may take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. Computer-readable signal media may also be any computer-readable medium other than computer-readable storage media, capable of sending, propagating, or transmitting programs for use by or in connection with an instruction execution system, apparatus, or device.

[0097] Program code contained on a computer-readable medium may be transmitted using any suitable medium, including but not limited to wireless, wire, optical fiber, radio frequency, etc., or any suitable combination thereof.

[0098] 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 control method for a liquid ejection device, characterized in that, The liquid ejection device has a body, which is provided with: a first container, a second container, a liquid delivery pipeline and a suction assembly. The first container and the second container are connected through the liquid delivery pipeline. The first container is provided with a print head, and the suction assembly is capable of suctioning the print head. When using the liquid ejection device for the first time, the control method of the liquid ejection device includes: The suction assembly is controlled to suction the printhead to draw gas from the liquid delivery pipeline and the first container.

2. The control method for the liquid ejection device according to claim 1, characterized in that, The suction assembly includes a suction section; the body is provided with a control component; the control component controls the suction section to alternately switch between a working state and a stopped state.

3. The control method for the liquid ejection device according to claim 2, characterized in that, The suction unit is powered by a power source, and the control component includes a controller and a switch. The controller is configured to generate a drive signal, and the switch is controlled by the drive signal to alternately turn on or off the electrical connection between the suction unit and the power source.

4. The control method for the liquid ejection device according to claim 3, characterized in that, The driving signal is a pulse width modulation signal.

5. The control method for the liquid ejection device according to claim 2, characterized in that, The machine body is equipped with a pressure sensor; The steps of controlling the suction assembly to suction the printhead include: When the pressure value detected by the pressure sensor is greater than or equal to the first preset pressure, the suction unit is controlled to switch to the stop state; When the pressure value detected by the pressure sensor is less than or equal to the second preset pressure, the suction unit is controlled to switch to the working state; The first preset pressure is greater than the second preset pressure.

6. The control method for the liquid ejection device according to claim 5, characterized in that, The pressure sensor is disposed inside the first container; And / or, the suction assembly further includes: a sealing portion, the sealing portion being able to form a sealed space with the printhead, the pressure sensor being disposed in the sealing portion and being able to be located within the sealed space.

7. The control method for the liquid ejection device according to any one of claims 2-6, characterized in that, The machine body is equipped with a pressure sensor; The control method for the liquid ejection device further includes: When the pressure value detected by the pressure sensor decreases by less than a preset value within a second preset time period, the suction component is controlled to stop suctioning the print head.

8. The control method for the liquid ejection device according to any one of claims 1-6, characterized in that, The control method for the liquid ejection device further includes: When the suction component suctions the print head for a duration longer than a first preset duration, the suction component is controlled to stop suctioning the print head.

9. The control method for the liquid ejection device according to any one of claims 1-6, characterized in that, The machine body is equipped with an ink volume sensor; After the liquid dispensing device is powered on, if the ink volume sensor detects that the ink volume in the first container is less than the preset ink volume, it is determined that the liquid dispensing device is being used for the first time.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium includes a stored program, wherein, when the program is executed, it controls the device on which the computer-readable storage medium is located to perform the method according to any one of claims 1 to 9.

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