Method and system for detecting cleaning effect of inkjet system

Abstract

The application provides a cleaning effect detection method and system of an inkjet system, and relates to the field of photovoltaic cell manufacturing.The cleaning effect detection method comprises the following steps: controlling the inkjet system to perform test spraying on a target position, and obtaining the ink form formed at the target position through a sensor; comparing the ink form with a preset standard form; in the case that the ink form and the standard form are different, determining the fault type of the nozzle of the inkjet system according to the difference; controlling the inkjet pressure of the inkjet system based on the fault type to clean the inkjet system; updating the position without ink spraying to the target position, and repeating the above process until the ink form and the standard form are the same. The cleaning effect detection method automatically excludes the faulty nozzle in the detection process, so that the cleaning effect can reach the target effect faster, and the detection reliability and the cell piece manufacturing efficiency are improved.

Description

Technical Field

[0001] This invention relates to the field of photovoltaic cell manufacturing, and more particularly to a method and system for testing the cleaning effect of an inkjet system. Background Technology

[0002] In the manufacturing process of photovoltaic cells, an inkjet printing method is used to form a photosensitive layer on the surface of the cell. After the inkjet system has been running for a period of time, the nozzles of the inkjet system need to be cleaned to maintain the high-precision printing capability of the inkjet system. After cleaning the inkjet system with a cleaning device, the cleaning effect of the inkjet system needs to be verified. However, the relevant cleaning effect testing methods have low reliability in verifying the cleaning effect. Summary of the Invention

[0003] This invention provides a method and system for testing the cleaning effect of an inkjet system, which addresses the technical problems of how to improve the reliability of cleaning effect verification and how to improve the cleaning effect when it is poor.

[0004] The first aspect of this invention provides a method for detecting the cleaning effect of an inkjet system. This inkjet system is applied in a photovoltaic cell production system. The method includes: controlling the inkjet system to perform a test spray at a target location; acquiring the ink pattern formed at the target location using a sensor; comparing the ink pattern with a preset standard pattern; determining a nozzle fault type based on the difference when the ink pattern differs from the standard pattern; controlling the inkjet pressure of the inkjet system based on the fault type to perform troubleshooting and cleaning; updating the unsprayed ink location to the target location; repeating the steps of controlling the inkjet system to perform a test spray at the target location, acquiring the ink pattern formed at the target location using a sensor, and determining a nozzle fault type based on the difference when the ink pattern differs from the standard pattern, and controlling the inkjet pressure of the inkjet system based on the fault type to perform troubleshooting and cleaning until the ink pattern matches the standard pattern.

[0005] In some embodiments, determining the nozzle failure type of the inkjet system based on the difference, and controlling the inkjet pressure of the inkjet system based on the failure type to troubleshoot and clean the inkjet system includes: determining the nozzle failure type as a cleaning agent residue state when the distance between the center position of the ink droplet formed by the test spray and the center position of the standard shape exceeds a distance threshold; and controlling the nozzle in the cleaning agent residue state to spray ink at a first pressure and a first duration.

[0006] In some implementations, the first pressure is greater than 20 kPa, and the first duration is between 10 and 50 milliseconds.

[0007] In some embodiments, determining the nozzle failure type of the inkjet system based on the difference, and controlling the inkjet pressure of the inkjet system based on the failure type to troubleshoot and clean the inkjet system includes: When there is no ink dot at the position where a standard ink dot exists in the standard configuration, the fault type of the nozzle corresponding to the position where no ink dot exists is determined to be a clogging state; a second pressure is formed in the nozzle in the clogging state, and a cleaning rod is controlled to wipe the nozzle in the clogging state, wherein the second pressure is a positive pressure.

[0008] In some embodiments, after the second pressure is formed in the nozzle in the blocked state and the cleaning rod is used to wipe the nozzle in the blocked state, the step of determining the fault type of the nozzle of the inkjet system based on the difference and controlling the inkjet pressure of the inkjet system based on the fault type to clean the inkjet system further includes: controlling the formation of a negative pressure in the nozzle after wiping.

[0009] In some embodiments, the control forms a second pressure within the nozzle in the blocked state, the second pressure being between 1 and 3 kPa.

[0010] In some embodiments, when the ink form differs from the standard form, determining the nozzle malfunction type of the inkjet system based on the difference, and controlling the inkjet pressure of the inkjet system to troubleshoot and clean the inkjet system based on the malfunction type includes: determining that the ink droplet is a deflected ink droplet when the distance between the center position of the ink droplet formed by the test spray and the center position of the standard form exceeds a distance threshold, classifying the nozzle that ejects the deflected ink droplet as having a cleaning agent residue state; and determining the malfunction state of the nozzle at the position where a standard ink droplet exists in the standard form as having a clogging state when there is no ink droplet at that position. The nozzle in the cleaning agent residue state is controlled to eject ink at a first pressure and a first duration; a second pressure is controlled to form within the nozzle in the clogging state; and a cleaning rod is controlled to wipe the nozzle in the clogging state, wherein the second pressure is a positive pressure.

[0011] In some embodiments, before controlling the inkjet system to perform a test spray at the target location, the cleaning effect detection method further includes: setting a release liner at the target location; controlling the inkjet system to perform a test spray at the target location includes: controlling the inkjet system to perform a test spray at the target location on the surface of the release liner.

[0012] In some embodiments, acquiring the ink pattern formed at the target location via a sensor includes: acquiring visual data of the ink pattern formed at the target location via a vision sensor, and obtaining the ink pattern via the visual data.

[0013] A second aspect of this invention provides a cleaning effect detection system for an inkjet system. The cleaning effect detection system includes: a control module for controlling the inkjet system to perform a test spray at a target location; an acquisition module for acquiring the ink pattern formed at the target location using a sensor; and a determination module for determining the nozzle failure type of the inkjet system based on the difference between the ink pattern and a standard pattern. The control module is further configured to control the inkjet pressure of the inkjet system based on the failure type to perform troubleshooting and cleaning of the inkjet system, and to update the location where no ink has been sprayed to the target location.

[0014] This invention provides a method for detecting the cleaning effect of an inkjet system. The method includes: controlling the inkjet system to perform a test spray at a target location; acquiring the ink pattern formed at the target location using a sensor; comparing the ink pattern with a preset standard shape; determining the nozzle fault type based on the difference between the ink pattern and the standard shape; controlling the pressure within the nozzle based on the fault type to perform troubleshooting and cleaning; repeating the above process to check the fault status of each nozzle through test spraying and automatically cleaning the faulty nozzle when a fault exists, until the ink pattern of the test spray matches the standard shape. This allows for the automatic elimination of faulty nozzles during the cleaning effect detection process, improving the manufacturing efficiency of solar cells. Furthermore, before cleaning the faulty printhead, it is necessary to determine the fault type of the printhead and determine the specific cleaning method based on the fault type, thereby enabling more reliable and efficient elimination of printhead faults. Attached Figure Description

[0015] Figure 1 A flowchart illustrating the cleaning effect testing method for a first inkjet system provided in an embodiment of the present invention; Figure 2 A flowchart illustrating the second method for detecting the cleaning effect of an inkjet system provided in an embodiment of the present invention; Figure 3A flowchart illustrating the third method for detecting the cleaning effect of an inkjet system provided in an embodiment of the present invention; Figure 4 A flowchart illustrating the fourth method for detecting the cleaning effect of an inkjet system provided in an embodiment of the present invention; Figure 5 This is a schematic diagram of the system architecture of a cleaning effect detection system provided in an embodiment of the present invention. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0017] The specific technical features described in the various embodiments in the detailed implementation can be combined in various ways without contradiction. For example, different implementation methods can be formed by combining different specific technical features. In order to avoid unnecessary repetition, the various possible combinations of the specific technical features in this invention will not be described separately.

[0018] It should also be noted that, in order to avoid obscuring the invention with unnecessary details, only the structures and / or processing steps closely related to the present invention are shown in the accompanying drawings, while other details that are not closely related to the present invention are omitted.

[0019] Additionally, it should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. In the following description, the terms "first," "second," etc., are used merely to distinguish different objects and do not indicate any similarity or connection between them. It should be understood that the directional descriptions such as "above," "below," "inside," and "outside" refer to the orientation under normal use conditions.

[0020] In the following specific implementation, the cleaning effect detection method is applied to an inkjet system used in a photovoltaic cell production system. In related technologies within the inkjet printing field, the state of the ink droplets ejected by the inkjet system can be identified and judged to determine whether the printer printhead is in a faulty state. However, in the printing field, printers are not typically used in high-volume, automated manufacturing scenarios with high print counts. Therefore, when identifying printhead faults, there is no technical requirement to quickly resolve printhead malfunctions to restore production as soon as possible, thus allowing for manual troubleshooting of printhead faults.

[0021] The inkjet system provided in this application is applied to a photovoltaic cell production system. This application scenario has requirements for high print runs and large output. The time spent waiting for manual troubleshooting of the inkjet system nozzles can significantly impact the production efficiency of photovoltaic cells. It is in this specific application scenario that the applicant proposes a cleaning effect detection method that integrates an automatic nozzle fault-solving method into the cleaning effect detection method. That is, when a nozzle fault is detected, the nozzle is automatically troubleshooted until the cleaning effect of the inkjet system meets the requirements, thereby improving the production efficiency of photovoltaic cells. Furthermore, the applicant has conceived of using different troubleshooting methods for the nozzles based on the identified nozzle fault type, thereby more efficiently achieving the required cleaning effect of the inkjet system. The steps of the inkjet system cleaning effect detection method are illustrated below with reference to various embodiments.

[0022] In some embodiments, see Figure 1 , Figure 1 This is a flowchart illustrating the first method for detecting the cleaning effect of an inkjet system provided in an embodiment of the present invention, as shown below. Figure 1 As shown, the cleaning effect testing method includes: Step S101: Control the inkjet system to perform a test spray at the target location, and obtain the ink pattern formed at the location through the sensor.

[0023] This can be understood as follows: After cleaning the inkjet system, the system is controlled to spray ink towards the target location. Each nozzle of the inkjet system sprays ink at the target location to form ink droplets. The ink shape can be sensed by a sensor, which includes the position and outer contour shape of each ink droplet. The sensor can be any sensor capable of sensing ink shape. For example, the sensor can be an infrared sensor. The inkjet system performs a trial spray on the surface of a transparent film. The signal transmitter and receiver of the infrared sensor are located on opposite sides of the transparent film. The ink droplets will block the propagation of infrared light. The position and shape of the ink droplets can be sensed based on the position and contour where no infrared signal is received by the receiver. For example, the sensor can also be a vision sensor.

[0024] Step S102: Compare the ink form with the preset standard form. If there is a difference between the ink form and the standard form, determine the fault type of the nozzle of the inkjet system based on the difference. Control the inkjet pressure of the inkjet system based on the fault type to troubleshoot and clean the inkjet system.

[0025] This can be understood as comparing the acquired ink form with a preset standard form. If the ink form matches the standard form, the cleaning effect of the inkjet system is considered to meet the requirements. If there is a deviation between the position or outer contour shape of the ink droplet and the standard form, the nozzle is considered to be faulty, causing the cleaning effect of the inkjet system to fail to meet the requirements. In this case, the nozzle fault state can be determined based on the deviation between the ink form and the standard form. Based on the fault state, the pressure inside the faulty nozzle is controlled to perform corresponding troubleshooting cleaning. It should be noted that the pressure inside the nozzle needs to be controlled during the troubleshooting cleaning process. In some fault types, it can be understood that the pressure inside the faulty nozzle needs to be increased to make the faulty nozzle eject a small amount of ink, and the flushing effect of the ejected ink is used to achieve troubleshooting cleaning. In other fault types, it can be understood that the faulty nozzle needs to be wiped. Since the inkjet system of photovoltaic cells has high printing precision requirements, the nozzle diameter of this inkjet system is very small. During the wiping process, it is necessary to maintain a small positive pressure inside the nozzle. This small positive pressure reduces the risk that the cleaning liquid in the wiping component will extend back into the nozzle under capillary action and contaminate the ink of the inkjet system.

[0026] The specific methods for determining the fault type based on the difference between ink form and standard form are given in various other embodiments, and will not be elaborated here.

[0027] Step S103: Update the position where no ink was sprayed to the target position, and repeat steps S101 and S102 until the resulting ink pattern is the same as the standard pattern.

[0028] That is, the position where no ink was sprayed is updated as the target position, reducing the risk that the ink from the previous test spray will affect the current test results; by testing the fault status and fault type of the nozzle through successive test sprays, the faulty nozzles are automatically cleaned and troubleshooted, which can automatically eliminate the faults of the nozzles in the inkjet system, so that the cleaning effect of the inkjet system meets the requirements.

[0029] This invention provides a method for detecting the cleaning effect of an inkjet system. The method includes: controlling the inkjet system to perform a test spray at a target location; acquiring the ink pattern formed at the target location using a sensor; comparing the ink pattern with a preset standard shape; determining the nozzle fault type based on the difference between the ink pattern and the standard shape; controlling the pressure within the nozzle based on the fault type to perform troubleshooting and cleaning; repeating the above process to check the fault status of each nozzle through test spraying and automatically cleaning the faulty nozzle when a fault exists, until the ink pattern of the test spray matches the standard shape. This allows for the automatic elimination of faulty nozzles during the cleaning effect detection process, improving the manufacturing efficiency of solar cells. Furthermore, before cleaning the faulty printhead, it is necessary to determine the fault type of the printhead and determine the specific cleaning method based on the fault type, thereby enabling more reliable and efficient elimination of printhead faults.

[0030] In some embodiments, please refer to Figure 2 , Figure 2 This invention provides a flowchart illustrating a second method for detecting the cleaning effect of an inkjet system, based on... Figure 1 , Figure 1 Step S102 includes: Step S201: Compare the ink form with the preset standard form. If the distance between the center of the ink droplet formed by the test spray and the center of the standard form exceeds the distance threshold, determine that the nozzle failure type is cleaning agent residue.

[0031] This can be understood as comparing the center position of the ink droplets formed by the test spray with the center position of each ink droplet in the standard form. If the deviation between the center position of the ink droplet formed by the test spray and the corresponding position of the ink droplet in the standard form exceeds a distance threshold, the nozzle that formed the ink droplet is identified as a faulty nozzle, and the fault type of the faulty nozzle is identified as a cleaning agent residue state. Specifically, after cleaning, there is cleaning agent residue on the surface of the nozzle. When the ink is sprayed from a nozzle with cleaning agent residue, the ink will be deflected, which will cause the center position of the ink droplet formed by the test spray to shift from the center position of the ink droplet in the standard form. Such a nozzle can be identified as a cleaning agent residue state.

[0032] Step S202: Control the nozzle, which is in a state of detergent residue, to eject ink at a first pressure and a first duration.

[0033] This can be understood as follows: the nozzle that controls the residual state of the cleaning agent sprays ink at a first pressure and a first duration, and the residual cleaning agent is flushed away by the short ink spray, thereby removing the residual state of the cleaning agent.

[0034] It should be noted that, unlike in the field of ordinary printing, the ink in the inkjet system of photovoltaic cells not only needs to be able to color, but more importantly, it needs to be able to form a photoelectric sensing layer. As a result, the cost of this ink is higher than that of ordinary ink. Therefore, it is necessary to solve the ink problem as much as possible during the troubleshooting and cleaning process. That is, there are requirements for the first pressure and the first duration. Specifically, a flash spray with short-term high pressure is achieved by instantaneous high pressure. This can wash away residual cleaning agent while saving ink consumption. For example, the first pressure is greater than 20 kPa and the first duration is between 10 and 50 milliseconds.

[0035] In some embodiments, please refer to Figure 3 , Figure 3 This is a flowchart illustrating the third method for detecting the cleaning effect of an inkjet system provided in an embodiment of the present invention. Figure 1 , Figure 1 Step S102 includes: Step S301: Compare the ink form with the preset standard form. If there is no ink dot at the position where there is a standard ink dot in the standard form, determine that the fault type of the nozzle corresponding to the position where there is no ink dot is the clogging state.

[0036] That is, by comparing with the standard form, if there is no ink dot at the position where an ink dot should exist in the standard form, it can be assumed that an ink dot should exist, but the nozzle corresponding to the position where the ink dot does not exist is physically blocked by crystals or foreign objects, thus being in a blocked state, and therefore no ink dot is formed.

[0037] Step S302: Control the formation of a second pressure inside the nozzle in the blocked state, and control the cleaning rod to wipe the nozzle in the blocked state.

[0038] That is, the nozzle in the clogged state is wiped with a cleaning rod to remove the crystals or foreign objects clogging the nozzle. Optionally, the cleaning process and the cleaning effect inspection process of the inkjet system occur at the same station. The cleaning system used in the cleaning process can use the cleaning rod of the original cleaning system to clean the nozzle in the clogged state, so that there is no need to set up an additional cleaning rod, reducing the cost required for troubleshooting.

[0039] The second pressure is a positive pressure. Because photovoltaic manufacturing systems require high inkjet precision, the radial dimension of the inkjet nozzles is very small. During the contact between the cleaning rod and the nozzle, the cleaning agent absorbed by the cleaning rod may be drawn into the nozzle under capillary action or even seep into the ink reservoir along the ink supply line, contaminating valuable ink. Therefore, a small positive pressure needs to be maintained inside the clogged nozzle during the contact between the cleaning rod and the nozzle. This positive pressure resists capillary action and reduces the risk of cleaning agent seeping into the nozzle. It should be noted that the second pressure is used to form a convex meniscus at the nozzle without causing ink to spray out or drip, thereby reducing ink consumption while minimizing the risk of cleaning agent seepage. For example, the second pressure is between 1 and 3 kPa.

[0040] Optional, such as Figure 3 As shown, after step S302, Figure 1 Step S102 further includes: Step S303: Control the formation of negative pressure inside the nozzle after wiping is completed.

[0041] That is, after the cleaning rod has finished wiping the nozzle and is separated from the nozzle, a negative pressure is created inside the nozzle to draw the ink droplets from the convex meniscus back into the nozzle, reducing the risk of ink droplets contaminating the production table or photovoltaic cell raw materials.

[0042] In some embodiments, please refer to Figure 4 , Figure 4 This is a flowchart illustrating the fourth method for detecting the cleaning effect of an inkjet system provided in an embodiment of the present invention. Figure 1 , Figure 1 Step S102 includes: Step S401: Compare the ink form with the preset standard form. If the distance between the center of the ink dot formed by the test spray and the center of the standard form exceeds the distance threshold, determine that the nozzle failure type is cleaning agent residue. If there is no ink dot at the position where the standard ink dot exists in the standard form, determine that the nozzle failure type corresponding to the position where there is no ink dot is hole blockage.

[0043] This can be understood as follows: an inkjet system has multiple nozzles. By comparing the ink pattern formed by test spraying with the standard pattern, it is possible to determine whether each nozzle is faulty and to determine the type of fault in each faulty nozzle.

[0044] Step S402: Control the nozzle, which is in a state of residual cleaning agent, to eject ink at a first pressure and a first duration.

[0045] Step S403: Control the formation of a second pressure inside the nozzle in the blocked state, and control the cleaning rod to wipe the nozzle in the blocked state.

[0046] Steps S402 and S403 above can be understood as follows: when both faulty nozzles with cleaning agent residue and clogged nozzles exist simultaneously in the inkjet system, the nozzles with cleaning agent residue are first rectified by ink flash spraying, and then the nozzles with clogged nozzles are rectified by wiping with a cleaning swab. The reason for this troubleshooting order is explained below. Cleaning agent residue in the nozzle can be flushed out by ink rinsing if it remains for a short time. However, if the residue remains for a long time, it may crystallize or adhere to the inner wall of the nozzle, making it more difficult to remove. Therefore, it is necessary to prioritize cleaning the nozzles with cleaning agent residue.

[0047] In some embodiments, Figure 1 Before step S101, the cleaning effect testing method further includes: setting the isolation membrane at the target position, while... Figure 1 Step S101 includes controlling the inkjet system to perform a test spray at a target location on the surface of the separator membrane. That is, the target location is formed by the separator membrane, and the test spray location is isolated from the table of the photovoltaic cell manufacturing system, thereby reducing the risk of table contamination.

[0048] In some embodiments, Figure 1 In step S101, obtaining the ink shape formed at the target position through the sensor includes: obtaining visual data of the ink shape formed at the target position through a vision sensor and obtaining the ink shape based on the visual data. This can be understood as obtaining visual data of the ink dots formed by spraying through a vision sensor, and extracting the outer contour data of the position coordinates of each ink dot based on the visual data to obtain the ink shape.

[0049] This invention also provides a cleaning effect detection system, which is used to achieve the following: Figures 1 to 4 The cleaning effect testing method of any inkjet system shown in the image below, combined with... Figure 5 The structure of the cleaning effect testing system is illustrated by way of example.

[0050] like Figure 5 As shown, the cleaning effect detection system includes a control module 100, an acquisition module 200, and a determination module 300. The control module 100 controls the inkjet system to perform a test spray at the target location; the acquisition module 200 acquires the ink pattern formed at the target location using sensors; the determination module 300 determines the nozzle failure type of the inkjet system based on the difference between the ink pattern and the standard pattern; the control module 100 also controls the inkjet pressure of the inkjet system based on the failure type to perform troubleshooting and cleaning, and updates the unsprayed ink location to the target location.

[0051] The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. A method for testing the cleaning effect of an inkjet system, characterized in that, The inkjet system is applied in a photovoltaic cell production system, and the cleaning effect detection method includes: The inkjet system is controlled to perform a test spray at the target location, and the ink pattern formed at the target location is obtained by a sensor. The ink form is compared with a preset standard form. If there is a difference between the ink form and the standard form, the fault type of the nozzle of the inkjet system is determined according to the difference. Based on the fault type, the inkjet pressure of the inkjet system is controlled to troubleshoot and clean the inkjet system. The position where no ink was sprayed is updated to the target position. The process of controlling the inkjet system to perform a test spray to the target position is repeated. The ink pattern formed at the target position is obtained by the sensor. When the ink pattern differs from the standard pattern, the nozzle failure type of the inkjet system is determined based on the difference. Based on the failure type, the inkjet pressure of the inkjet system is controlled to clean and troubleshoot the inkjet system until the ink pattern is the same as the standard pattern.

2. The cleaning effect testing method according to claim 1, characterized in that, The step of determining the nozzle failure type of the inkjet system based on the difference, and controlling the inkjet pressure of the inkjet system based on the failure type to troubleshoot and clean the inkjet system includes: If the distance between the center of the ink droplet formed by the test spray and the center of the standard shape exceeds a distance threshold, the nozzle malfunction is determined to be a cleaning agent residue state. The nozzle, which is in the state of residual cleaning agent, is controlled to eject ink at a first pressure and a first duration.

3. The cleaning effect testing method according to claim 2, characterized in that, The first pressure is greater than 20 kPa, and the first duration is between 10 and 50 milliseconds.

4. The cleaning effect testing method according to claim 1, characterized in that, The step of determining the nozzle failure type of the inkjet system based on the difference, and controlling the inkjet pressure of the inkjet system based on the failure type to troubleshoot and clean the inkjet system includes: If there is no ink dot at the location where a standard ink dot exists in the standard configuration, the fault type of the nozzle corresponding to the location where no ink dot exists is determined to be a clogging state. A second pressure is generated inside the nozzle in the blocked state, and a cleaning rod is controlled to wipe the nozzle in the blocked state, wherein the second pressure is a positive pressure.

5. The cleaning effect testing method according to claim 4, characterized in that, After a second pressure is generated within the nozzle in the blocked state, and a cleaning rod is used to wipe the nozzle in the blocked state, the step of determining the nozzle fault type of the inkjet system based on the difference, and controlling the inkjet pressure of the inkjet system based on the fault type to troubleshoot and clean the inkjet system further includes: A negative pressure is formed inside the nozzle after wiping is completed.

6. The cleaning effect testing method according to claim 4, characterized in that, The control forms a second pressure within the nozzle in the blocked state, the second pressure being between 1 and 3 kPa.

7. The cleaning effect testing method according to claim 1, characterized in that, When the ink form differs from the standard form, determining the nozzle malfunction type of the inkjet system based on the difference, and controlling the inkjet pressure of the inkjet system based on the malfunction type to troubleshoot and clean the inkjet system includes: If the distance between the center of the ink droplet formed by the test spray and the center of the standard shape exceeds a distance threshold, the ink droplet is determined to be an oblique ink droplet, and the fault type of the nozzle that sprays the oblique ink droplet is determined to be a cleaning agent residue state. If there is no ink droplet at the position where there is a standard ink droplet in the standard shape, the fault state of the nozzle at the position where there is no ink droplet is determined to be a hole blockage state. The nozzle, which is in the state of residual cleaning agent, is controlled to eject ink at a first pressure and a first duration; A second pressure is generated inside the nozzle in the blocked state, and a cleaning rod is controlled to wipe the nozzle in the blocked state, wherein the second pressure is a positive pressure.

8. The cleaning effect testing method according to claim 1, characterized in that, Before controlling the inkjet system to perform a test spray at the target location, the cleaning effect detection method further includes: The isolation membrane is placed at the target location; The step of controlling the inkjet system to perform a test spray at the target location includes: The inkjet system is controlled to perform a test spray at the target position on the surface of the isolation membrane.

9. The cleaning effect testing method according to claim 1, characterized in that, The process of acquiring the ink pattern at the target location via a sensor includes: Visual data of the ink pattern formed at the target location is acquired using a visual sensor, and the ink pattern is obtained from the visual data.

10. A cleaning effect testing system for an inkjet system, characterized in that, The cleaning effect detection system includes: The control module is used to control the inkjet system to perform test spraying at the target location; The acquisition module is used to acquire the ink pattern formed at the target location through a sensor; A determination module is used to determine the nozzle failure type of the inkjet system based on the difference between the ink form and the standard form. The control module is also used to control the inkjet pressure of the inkjet system based on the fault type to clean and troubleshoot the inkjet system, and to update the position of the unsprayed ink to the target position.

Images