Methods for identifying printer and printer nozzle installation errors

Abstract

This invention discloses a printer and a method for identifying nozzle installation errors in a printer. The printer includes an image acquisition device, a printhead mounting plate, and a processor. The printhead mounting plate is provided with a printhead, a first calibration target point, and a second calibration target point. A nozzle is provided on the printhead. The image acquisition device acquires the actual position of the nozzle, the first position of the first calibration target point, and the second position of the second calibration target point, and transmits these information to the processor. The processor determines the nozzle design position based on the first and second positions, and, based on the nozzle design position and the actual nozzle position, enables real-time observation and rapid identification of errors in the nozzle design position and the actual nozzle position. This eliminates the need to observe the printing deviation of each printhead through printing test patterns, solving the problems of low efficiency and long time consumption in existing printer printhead installation position adjustment methods, and achieving the beneficial effects of high efficiency and short time consumption.

Description

Technical Field

[0001] This invention relates to the field of printer technology, and in particular to a printer and a method for identifying nozzle installation errors in printers. Background Technology

[0002] The printhead of a printer is equipped with several nozzles. When installing the printhead, in order to ensure the accuracy of the printhead installation position, the installation position of the printhead needs to be repeatedly adjusted. The existing method for adjusting the printhead installation position is: print a test image - observe the printing deviation of each printhead - adjust the printhead installation position. The above method needs to be repeated many times, and for printers with a large number of printheads, it takes 2 to 3 days to complete the adjustment of the installation position of all printheads. This method has the problems of low efficiency and long time consumption. Summary of the Invention

[0003] This invention provides a printer and a method for identifying nozzle installation errors in printers, in order to solve the problems of low efficiency and long time consumption in existing printer printhead installation position adjustment methods.

[0004] According to one aspect of the present invention, a printer is provided, comprising: a printhead mounting plate, an image acquisition device, and a processor;

[0005] The image acquisition surface of the image acquisition device is arranged opposite to the nozzle mounting plate. The nozzle mounting plate is provided with a nozzle, a first calibration target point and a second calibration target point. The nozzle is provided with a nozzle. The image acquisition device is communicatively connected to the processor.

[0006] The image acquisition device is used to acquire the actual position of the nozzle, the first position of the first calibration target point, and the second position of the second calibration target point, and transmit the actual position of the nozzle, the first position of the first calibration target point, and the second position of the second calibration target point to the processor;

[0007] The processor is used to determine the nozzle design position based on the first position and the second position, and to identify the nozzle installation error based on the nozzle design position and the actual nozzle position.

[0008] Optionally, the printer may also include a display device;

[0009] The display device is communicatively connected to the image acquisition device, and the display device is used to display the actual position of the nozzle and the designed position of the nozzle.

[0010] Optionally, the printer further includes: a first slide and a worktable;

[0011] The workbench is mounted on the first slide, and the image acquisition device is mounted on the workbench;

[0012] The first slide block is used to drive the worktable to slide along a first direction, which intersects with the arrangement direction of the nozzles on the spray head.

[0013] Optionally, the printer also includes a second slide;

[0014] The nozzle mounting plate is disposed on the second slide, and the second slide is used to drive the nozzle mounting plate to slide along a second direction, which is the arrangement direction of the nozzles on the nozzle.

[0015] According to another aspect of the present invention, a nozzle installation error identification method for a printer is provided, the nozzle installation error identification method being performed by a printer according to any embodiment of the present invention, the nozzle installation error identification method comprising:

[0016] The image acquisition device acquires the actual position of the nozzle, the first position of the first calibration target point, and the second position of the second calibration target point, and transmits the actual position of the nozzle, the first position of the first calibration target point, and the second position of the second calibration target point to the processor;

[0017] The processor determines the nozzle design position based on the first position and the second position, and identifies the nozzle installation error based on the nozzle design position and the actual nozzle position.

[0018] Optionally, the processor determines the nozzle design position based on the first position and the second position, including:

[0019] The processor determines the origin of the reference coordinate system of the nozzle based on the first position and the second position;

[0020] When the actual position of the reference nozzle is adjusted to the origin, the processor determines the coordinate axes of the reference coordinate system according to the arrangement direction of the nozzle, and determines the reference coordinate system based on the origin and the coordinate axes;

[0021] The processor determines the nozzle design position based on the reference coordinate system and the preset positional relationship between different nozzles, wherein the preset positional relationship includes the X-direction distance between adjacent nozzles, the X-direction distance between adjacent nozzles, and the Y-direction distance between adjacent nozzles.

[0022] Optionally, the processor determines the origin of the reference coordinate system of the nozzle based on the first position and the second position, including:

[0023] The processor determines the origin of the reference coordinate system based on the midpoint between the first position and the second position.

[0024] Optionally, after the processor determines the origin of the reference coordinate system of the nozzle based on the first position and the second position, the process includes:

[0025] When the origin coincides with the actual position of the reference nozzle, the processor determines that the actual position of the reference nozzle is located at the origin;

[0026] When there is a difference between the origin and the actual position of the reference nozzle, the processor adjusts the actual position of the reference nozzle to the origin.

[0027] Optionally, the processor determines the nozzle design position based on the reference coordinate system and the preset positional relationship between different nozzles, including:

[0028] The processor generates coordinate information of the nozzle design position based on the origin coordinates of the reference coordinate system and the preset positional relationship between different nozzles. The coordinate information includes X coordinates and Y coordinates.

[0029] The processor determines the nozzle design position based on the coordinate information.

[0030] Optionally, the processor generates coordinate information of the nozzle design position based on the origin coordinates of the reference coordinate system and the preset positional relationship between different nozzles, including:

[0031] The processor acquires the nozzle number and the spray head number;

[0032] The processor determines the X coordinate of the nozzle design position based on the origin X coordinate, the nozzle number, the nozzle number, the X-direction distance between adjacent nozzles, and the X-direction distance between adjacent nozzles;

[0033] The processor determines the Y coordinate of the nozzle design position based on the origin Y coordinate and the Y-direction distance between the adjacent nozzles.

[0034] The technical solution provided by this invention involves setting an image acquisition device on the printer, with the image acquisition surface of the image acquisition device positioned opposite to the printhead mounting plate. The image acquisition device acquires the actual position of the nozzle. A first calibration target point and a second calibration target point are set on the printhead mounting plate. The image acquisition device acquires the first position of the first calibration target point and the second position of the second calibration target point. The actual nozzle position, the first position of the first calibration target point, and the second position of the second calibration target point are transmitted to a processor. The processor determines the nozzle design position based on the first and second positions. Based on the nozzle design position and the actual nozzle position, the processor can observe and quickly identify the error between the nozzle design position and the actual nozzle position in real time. Users can adjust the actual nozzle position according to the error, thereby adjusting the printhead mounting position. This eliminates the need to observe the printing deviation of each printhead through printing test patterns, solving the problems of low efficiency and long time consumption in existing printer printhead mounting position adjustment methods, and achieving the beneficial effects of high efficiency and short time consumption.

[0035] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0037] Figure 1 A front view of a printer provided in an embodiment of the present invention;

[0038] Figure 2 This is a schematic diagram illustrating the determination of the origin based on a first calibration target point and a second calibration target point, provided as an embodiment of the present invention.

[0039] Figure 3 A side view of a printer provided in an embodiment of the present invention;

[0040] Figure 4 A flowchart illustrating a method for identifying nozzle installation errors in a printer, provided as an embodiment of the present invention;

[0041] Figure 5 A flowchart of another method for identifying nozzle installation errors in a printer provided in an embodiment of the present invention;

[0042] Figure 6 A camera field of view provided for an embodiment of the present invention;

[0043] Figure 7 This is a schematic diagram illustrating the determination of the nozzle design position based on a reference coordinate system, as provided in an embodiment of the present invention. Detailed Implementation

[0044] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0045] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0046] Figure 1 This is a front view of a printer provided in an embodiment of the present invention. Figure 2 This is a schematic diagram illustrating the determination of the origin based on a first calibration target point and a second calibration target point, provided in an embodiment of the present invention. Figure 3 This is a side view of a printer provided in an embodiment of the present invention. This embodiment is applicable to printing and nozzle installation error identification in printers. See [link to relevant documentation]. Figure 1 The printer includes: a printhead mounting plate 1, an image acquisition device 2, and a processor 3. The image acquisition device 2 and the processor 3 are communicatively connected. See also Figure 2 The nozzle mounting plate 1 is equipped with a nozzle 4, a first calibration target point 101, and a second calibration target point 102. The nozzle is fitted with a nozzle head. (See also...) Figure 3 The image acquisition surface of the image acquisition device 2 is set opposite to the nozzle mounting plate 1.

[0047] The image acquisition device 2 is used to acquire the actual position of the nozzle, the first position of the first calibration target 101 and the second position of the second calibration target 102, and transmit the actual position of the nozzle, the first position of the first calibration target 101 and the second position of the second calibration target 102 to the processor 3.

[0048] The image acquisition device 2 can be any electronic device with photography or image acquisition functions, such as a camera, mobile phone, or tablet. In this embodiment, a camera is used as an example. The first calibration target point 101 and the second calibration target point 102 are points set on the nozzle mounting plate 1. For example, the first calibration target point 101 can be the upper left corner of the nozzle mounting plate 1, and the second calibration target point 102 can be the lower right corner of the nozzle mounting plate 1. Alternatively, the first calibration target point 101 can be the midpoint of the left short side of the nozzle mounting plate 1, and the second calibration target point 102 can be the midpoint of the right short side of the nozzle mounting plate 1. In this embodiment, the first calibration target point 101 and the second calibration target point 102 are set at diagonally opposite positions on the nozzle mounting plate 1. The first position is the location of the first calibration target point on the nozzle mounting plate, and the second position is the location of the second calibration target point on the nozzle mounting plate.

[0049] Specifically, when installing the printhead 4 of the printer, the image acquisition device 2 takes a picture of the printhead mounting plate 1 to obtain the actual position of each nozzle installed on the printhead 4, obtains the first position of the first calibration target 101 and the second position of the second calibration target 102 set on the printhead mounting plate 1, and transmits the actual position of the nozzle, the first position of the first calibration target 101 and the second position of the second calibration target 102 to the processor 3.

[0050] The processor 3 is used to determine the nozzle design position based on the first position and the second position, and to identify the nozzle installation error based on the nozzle design position and the actual nozzle position.

[0051] The nozzle design position refers to the ideal position of the nozzles that enables the printer to achieve the best printing effect. Specifically, after receiving the actual nozzle position, the first position of the first calibration target point 101, and the second position of the second calibration target point 102 transmitted by the image acquisition device, the processor 3 uses the first and second positions as reference positions and determines the design position of at least one nozzle based on the relative positional relationship between the actual position of at least one nozzle and the reference position. Then, it determines the design position of each nozzle based on the design position of at least one nozzle, identifies the error between the two positions based on the nozzle design position and the actual nozzle position, and uses this error as the nozzle installation error.

[0052] The technical solution provided by this invention involves setting an image acquisition device on the printer, with the image acquisition surface of the image acquisition device positioned opposite to the printhead mounting plate. The image acquisition device acquires the actual position of the nozzle. A first calibration target point and a second calibration target point are set on the printhead mounting plate. The image acquisition device acquires the first position of the first calibration target point and the second position of the second calibration target point. The actual nozzle position, the first position of the first calibration target point, and the second position of the second calibration target point are transmitted to a processor. The processor determines the nozzle design position based on the first and second positions. Based on the nozzle design position and the actual nozzle position, the processor can observe and quickly identify the error between the nozzle design position and the actual nozzle position in real time. Users can adjust the actual nozzle position according to the error, thereby adjusting the printhead mounting position. This eliminates the need to observe the printing deviation of each printhead through printing test patterns, solving the problems of low efficiency and long time consumption in existing printer printhead mounting position adjustment methods, and achieving the beneficial effects of high efficiency and short time consumption.

[0053] Continue to see Figure 1 Optionally, the printer also includes a display device 5, which is communicatively connected to the image acquisition device 2. The display device 5 is used to display the actual position of the nozzle and the designed position of the nozzle.

[0054] A display device is any electronic device with a display function, such as a computer monitor or an LCD screen.

[0055] Continue to see Figure 1 Optionally, the printer also includes a first slide 6 and a worktable 7. The worktable 7 is disposed on the first slide 6, and the image acquisition device 2 is disposed on the worktable 7. The first slide 6 is used to drive the worktable 7 to slide along the first direction Y, so that the image acquisition device 2 disposed on the worktable 7 can acquire the actual position of the nozzle of the printhead disposed on the printhead mounting plate, as well as the first position of the first calibration target point and the second position of the second calibration target point on the printhead mounting plate. The first direction intersects with the arrangement direction of the nozzles on the printhead.

[0056] Continue to see Figure 1 Optionally, the printer also includes a second slide 8, on which the printhead mounting plate 1 is disposed. The second slide 8 is used to drive the printhead mounting plate 1 to slide along a second direction X, so that the image acquisition device 2 disposed on the worktable 7 can acquire the actual position of the nozzle of the printhead disposed on the printhead mounting plate, as well as the first position of the first calibration target point and the second position of the second calibration target point on the printhead mounting plate. The second direction is the arrangement direction of the nozzles on the printhead. In some other embodiments, the first slide drives the worktable 7 to slide along the first direction Y, and the second slide drives the printhead mounting plate 1 to slide along the second direction X, the purpose of which is to provide a stable printing state for the printer during printing.

[0057] Figure 4 This is a flowchart illustrating a nozzle installation error identification method for a printer, provided in an embodiment of the present invention. The nozzle installation error identification method is executed by a printer provided in any embodiment of the present invention, and includes:

[0058] S410, the image acquisition device acquires the actual position of the nozzle, the first position of the first calibration target, and the second position of the second calibration target, and transmits the actual position of the nozzle, the first position of the first calibration target, and the second position of the second calibration target to the processor.

[0059] Specifically, when installing the printhead 4 of the printer, the image acquisition device 2 takes a picture of the printhead mounting plate 1 to obtain the actual position of each nozzle installed on the printhead 4, obtains the first position of the first calibration target 101 and the second position of the second calibration target 102 set on the printhead mounting plate 1, and transmits the actual position of the nozzle, the first position of the first calibration target 101 and the second position of the second calibration target 102 to the processor 3.

[0060] S420 The processor determines the nozzle design position based on the first position and the second position, and identifies the nozzle installation error based on the nozzle design position and the actual nozzle position.

[0061] Specifically, after receiving the actual position of the nozzle, the first position of the first calibration target 101, and the second position of the second calibration target 102 transmitted by the image acquisition device, the processor 3 determines the actual position of one of the nozzles through the first and second positions. Based on the actual position of the nozzle, the processor determines the design position of each nozzle. Based on the nozzle design position and the actual position of the nozzle, the processor identifies the error between the two positions and uses this error as the nozzle installation error.

[0062] The technical solution provided by this invention allows the processor to observe and quickly identify the error between the nozzle design position and the actual nozzle position in real time. Users can adjust the actual nozzle position according to the error, thereby adjusting the installation position of the printhead. This eliminates the need to observe the printing deviation of each printhead by printing test patterns, solving the problems of low efficiency and long time consumption in existing printer printhead installation position adjustment methods. It has the beneficial effects of high efficiency and short time consumption.

[0063] Figure 5 This is a flowchart illustrating another method for identifying nozzle installation errors in a printer, provided by an embodiment of the present invention. This embodiment further refines the aforementioned embodiments. See also... Figure 5 The nozzle installation error identification method includes:

[0064] S510, the image acquisition device acquires the actual position of the nozzle, the first position of the first calibration target, and the second position of the second calibration target, and transmits the actual position of the nozzle, the first position of the first calibration target, and the second position of the second calibration target to the processor.

[0065] This step is the same as S410 in the above embodiment, and will not be described again here.

[0066] S520, the processor determines the origin of the nozzle's reference coordinate system based on the first position and the second position.

[0067] It should be noted that the origin of the reference coordinate system provided in the embodiments of the present invention can be determined based on the midpoint of the line connecting the first position and the second position, or it can be determined based on any point on the line connecting the first position and the second position. The present invention does not limit this.

[0068] Optionally, the processor determines the origin of the nozzle's reference coordinate system based on the first position and the second position, including:

[0069] The processor determines the origin of the reference coordinate system based on the midpoint between the first and second positions.

[0070] See Figure 2 , Figure 2 103 in the reference coordinate system is the origin of the reference coordinate system. For example, assuming that the XY coordinates of the first position of the first calibration target point are (X1, Y1) and the XY coordinates of the first position of the first calibration target point are (X2, Y2), then the XY coordinates of the origin of the reference coordinate system are (0.5 * (X1 + X2), 0.5 * (Y1 + Y2)).

[0071] Optionally, after the processor determines the origin of the nozzle's reference coordinate system based on the first and second positions, it includes:

[0072] When the origin coincides with the actual position of the reference nozzle, the processor determines that the actual position of the reference nozzle is at the origin; when there is a difference between the origin and the actual position of the reference nozzle, the processor adjusts the actual position of the reference nozzle to the origin.

[0073] Figure 6 For example, see the camera field of view provided in the embodiments of the present invention. Figure 6The camera's field of view 600 is moved to the origin 601. By observing and identifying the error between the origin 601 and the actual position 602 of the reference nozzle, the actual position of the reference nozzle is moved to coincide with the origin. This determines the actual position of the reference nozzle. Based on this position, and according to the X-axis distance between adjacent nozzles, the X-axis distance between adjacent nozzles, and the Y-axis distance between adjacent nozzles, the designed nozzle position on each nozzle head can be determined. The nozzle mounting plate is equipped with a first calibration target point and a second calibration target point to facilitate the establishment of a coordinate system. Coinciding the actual position of the reference nozzle with the origin facilitates coordinate calculation.

[0074] S530. When the actual position of the reference nozzle is adjusted to the origin, the processor determines the coordinate axes of the reference coordinate system according to the arrangement direction of the nozzle, and determines the reference coordinate system based on the origin and the coordinate axes.

[0075] Figure 7 This is a schematic diagram illustrating the determination of the nozzle design position based on a reference coordinate system, provided in an embodiment of the present invention. (See also...) Figure 7 The nozzles on each nozzle head are arranged horizontally from N1 to N256. Based on the origin 103, the first coordinate axis OX is determined along the arrangement direction of the nozzles on the same nozzle head, and the second coordinate axis OY is determined along the arrangement direction between the nozzles on different nozzle heads. A reference coordinate system is established based on the origin 103, the first coordinate axis OX, and the second coordinate axis OY.

[0076] S540 The processor determines the nozzle design position based on the reference coordinate system and the preset positional relationship between different nozzles, and identifies the nozzle installation error based on the nozzle design position and the actual nozzle position. The preset positional relationship includes the X-direction distance between adjacent nozzles, the X-direction distance between adjacent nozzles, and the Y-direction distance between adjacent nozzles.

[0077] Specifically, the processor determines the nozzle design position based on a reference coordinate system, the X-axis distance between adjacent nozzles, the X-axis distance between adjacent nozzle heads, and the Y-axis distance between adjacent nozzle heads. The X-axis distances between adjacent nozzles, the X-axis distances between adjacent nozzle heads, and the Y-axis distances between adjacent nozzle heads are all preset fixed values. (See also...) Figure 7 For example, Figure 7 The example shown uses three nozzles. Figure 7 It can be seen that the nozzles on each nozzle head are arranged horizontally from N1 to N256. Figure 7In the reference coordinate system, 103 is the origin, and nozzles P01, P02, and P03 are respectively. The first nozzle in nozzle P01 is numbered P01-N1, and from left to right, they are P01-N2…P01-N256. The nozzles in nozzle P02 are numbered P02-N1…P01-N256, and the nozzles in nozzle P03 are numbered P03-N1…P03-N256. The X and Y distances between different nozzles are fixed values, and the distance between nozzles on each nozzle is also fixed. The coordinate axes of the reference coordinate system are determined based on the nozzle arrangement direction, and the reference coordinate system is determined based on the origin and the coordinate axes. In some other embodiments, when the positions of two nozzles do not allow one nozzle on one nozzle to be on the same coordinate axis as the nozzle on the other nozzle, the processor can determine the position of a third nozzle based on the X and Y distances between the two nozzles, in order to further determine the positions of other nozzles.

[0078] Optionally, the processor determines the nozzle design position based on a reference coordinate system and a preset positional relationship between different nozzles, including:

[0079] The processor generates coordinate information for the nozzle design position based on the origin coordinates of the reference coordinate system and the preset positional relationship between different nozzles. The coordinate information includes the X coordinate and the Y coordinate. The processor determines the nozzle design position based on the coordinate information.

[0080] Specifically, the processor generates coordinate information of the nozzle design position based on the origin coordinates of the reference coordinate system, the X-axis distance between adjacent nozzles, the X-axis distance between adjacent nozzles, and the Y-axis distance between adjacent nozzles, and determines the nozzle design position based on the coordinate information.

[0081] Optionally, the processor generates coordinate information for the nozzle design position based on the origin coordinates of the reference coordinate system and the preset positional relationships between different nozzles, including:

[0082] The processor obtains the nozzle number and the nozzle design number; the processor determines the X coordinate of the nozzle design position based on the origin X coordinate, the nozzle number, the nozzle number, the X-axis distance between adjacent nozzles, and the X-axis distance between adjacent nozzles; the processor determines the Y coordinate of the nozzle design position based on the origin Y coordinate and the Y-axis distance between adjacent nozzles.

[0083] Specifically, the X and Y coordinates of the nozzle design coordinates are determined using the following formulas:

[0084] X = 0.5*(X1+X2)+(H-2)*(N-1)*P, where X1 represents the X coordinate of the first calibration target point, X2 represents the X coordinate of the second calibration target point, H represents the nozzle number, N represents the nozzle number, and P represents the X-direction distance between adjacent nozzles.

[0085] Y = Yn, where Yn represents the Y-direction distance between adjacent nozzles.

[0086] It should be understood that the various forms of the processes shown above can be used to reorder, add, or delete steps. For example, the steps described in the present invention can be performed in parallel, sequentially, or in a different order, as long as the desired results of the technical solution of the present invention can be achieved. This is not limited herein.

[0087] The above specific embodiments do not limit the scope of protection of the present invention. Those skilled in the art will appreciate that various modifications, combinations, sub-combinations, and substitutions may be made based on design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention are intended to be included within the scope of protection of the present invention.

Claims

1. A method for identifying nozzle installation errors in a printer, characterized in that, The printer includes a printhead mounting plate, an image acquisition device, and a processor; the image acquisition surface of the image acquisition device is disposed opposite to the printhead mounting plate, the printhead mounting plate is provided with a printhead, a first calibration target point, and a second calibration target point, the printhead is provided with a nozzle, and the image acquisition device is communicatively connected to the processor. The image acquisition device is used to acquire the actual position of the nozzle, the first position of the first calibration target point, and the second position of the second calibration target point, and transmit the actual position of the nozzle, the first position of the first calibration target point, and the second position of the second calibration target point to the processor; The processor is used to determine the nozzle design position based on the first position and the second position, and to identify the nozzle installation error based on the nozzle design position and the actual nozzle position; The nozzle installation error identification method includes: The image acquisition device acquires the actual position of the nozzle, the first position of the first calibration target point, and the second position of the second calibration target point, and transmits the actual position of the nozzle, the first position of the first calibration target point, and the second position of the second calibration target point to the processor; The processor determines the nozzle design position based on the first position and the second position, and identifies the nozzle installation error based on the nozzle design position and the actual nozzle position. The processor determines the nozzle design position based on the first position and the second position, including: The processor determines the origin of the reference coordinate system of the nozzle based on the first position and the second position; When the actual position of the reference nozzle is adjusted to the origin, the processor determines the coordinate axes of the reference coordinate system according to the arrangement direction of the nozzle, and determines the reference coordinate system based on the origin and the coordinate axes; The processor determines the nozzle design position based on the reference coordinate system and the preset positional relationship between different nozzles, wherein the preset positional relationship includes the X-axis distance between adjacent nozzles, the X-axis distance between adjacent nozzles, and the Y-axis distance between adjacent nozzles; The processor determines the nozzle design position based on the reference coordinate system and the preset positional relationship between different nozzles, including: The processor generates coordinate information of the nozzle design position based on the origin coordinates of the reference coordinate system and the preset positional relationship between different nozzles. The coordinate information includes X coordinates and Y coordinates. The processor determines the nozzle design position based on the coordinate information; The processor generates coordinate information for the designed nozzle position based on the origin coordinates of the reference coordinate system and the preset positional relationships between different nozzles, including: The processor acquires the nozzle number and the spray head number; The processor determines the X coordinate of the nozzle design position based on the origin X coordinate, the nozzle number, the nozzle number, the X-direction distance between adjacent nozzles, and the X-direction distance between adjacent nozzles; The processor determines the Y coordinate of the nozzle design position based on the origin Y coordinate and the Y-direction distance between the adjacent nozzles.

2. The nozzle installation error identification method according to claim 1, characterized in that, The processor determines the origin of the reference coordinate system of the nozzle based on the first position and the second position, including: The processor determines the origin of the reference coordinate system based on the midpoint between the first position and the second position.

3. The nozzle installation error identification method according to claim 1, characterized in that, After the processor determines the origin of the reference coordinate system for the nozzle based on the first position and the second position, the process includes: When the origin coincides with the actual position of the reference nozzle, the processor determines that the actual position of the reference nozzle is located at the origin; When there is a difference between the origin and the actual position of the reference nozzle, the processor adjusts the actual position of the reference nozzle to the origin.

4. The nozzle installation error identification method according to claim 1, characterized in that, The printer also includes a display device; The display device is communicatively connected to the image acquisition device, and the display device is used to display the actual position of the nozzle and the designed position of the nozzle.

5. The nozzle installation error identification method according to claim 1, characterized in that, The printer also includes: a first slide and a worktable; The workbench is mounted on the first slide, and the image acquisition device is mounted on the workbench; The first slide block is used to drive the worktable to slide along a first direction, which intersects with the arrangement direction of the nozzles on the spray head.

6. The nozzle installation error identification method according to claim 1, characterized in that, The printer also includes a second slide; The nozzle mounting plate is disposed on the second slide, and the second slide is used to drive the nozzle mounting plate to slide along a second direction, which is the arrangement direction of the nozzles on the nozzle.

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