A printing parameter adjustment method involving electrofluid printing and inkjet printer

Abstract

The present application discloses a printing parameter adjustment method and inkjet printer for electrofluidic printing. The method includes: obtaining the current printing environment, which includes the ink material of the inkjet printer, the printing pinhole size, and the substrate material to be printed; confirming a second printing parameter database corresponding to the current printing environment from a preset first printing parameter database; the first printing parameter database includes the correspondence between the printing environment and the second printing parameter database; obtaining ink droplet parameters to be printed, which include ink droplet dot diameter; querying target printing parameters corresponding to the ink droplet parameters from the second printing parameter database; the target printing parameters include printing height, driving voltage, and printing time; and executing a printing operation with the target printing parameters. The method of the present application can improve the efficiency of printing parameter adjustment for electrofluidic printing.

Description

Technical Field

[0001] The present application relates to the technical field of electrofluidic inkjet printers, and specifically to a printing parameter adjustment method, device, equipment and storage medium related to electrofluidic printing. Background Art

[0002] Currently, electrofluidic inkjet printing is a technology that uses electric field forces to control fluid ejection to accurately deposit tiny ink droplets onto a substrate. This technology combines the principles of fluid mechanics, electrodynamics, and materials science to achieve precise control and patterning of ink. In inkjet printing, ink is placed in a charged nozzle or printhead; when a sufficiently high voltage is applied, the ink forms a conical Taylor cone under the action of the electric field and forms a very fine jet at the tip; this jet can be precisely controlled to form the desired pattern on the substrate; when the voltage is removed or reduced, the jet stops and the ink droplets are deposited on the substrate.

[0003] However, in order to print the desired ink droplets on the substrate, the inkjet printing droplet parameters (such as ink droplet diameter) must meet the requirements. The main factors affecting the ink droplet parameters include the inkjet printer's printing parameters, so the inkjet printer's printing parameters need to be set. Inkjet printer printing parameters include many factors such as drive voltage, printing height, substrate material, and ink material. In actual printing, these printing parameters need to be manually adjusted until the ink droplet parameters measured by the equipment meet the requirements. This entire manual adjustment process is not only cumbersome but also inefficient.

[0004] Therefore, how to improve the printing parameter adjustment efficiency of inkjet printers has become an urgent problem to be solved. Summary of the Invention

[0005] The present application provides a printing parameter adjustment method and an inkjet printer related to electrofluid printing, which can improve the printing parameter adjustment efficiency of the inkjet printer.

[0006] The first aspect of the present application discloses a printing parameter adjustment method involving electrofluid printing, which includes: obtaining a current printing environment, wherein the printing environment includes the ink material of the inkjet printer, the printing pinhole size, and the substrate material to be printed; confirming a second printing parameter database corresponding to the current printing environment from a preset first printing parameter database; the first printing parameter database includes the correspondence between the printing environment and the second printing parameter database; obtaining ink droplet parameters to be printed, wherein the ink droplet parameters include the ink droplet dot diameter; querying the target printing parameters corresponding to the ink droplet parameters from the second printing parameter database; the target printing parameters include printing height, driving voltage, and printing time; the driving voltage is the voltage value corresponding to the nozzle in the inkjet printer ejecting ink droplets, and the printing time is the duration of the nozzle ejecting an ink droplet; performing a printing operation with the target printing parameters.

[0007] In the above scheme, the printing parameters corresponding to the ink droplet parameters to be printed are determined from a preset printing parameter database through the current printing environment and the ink droplet parameters to be printed; the manual adjustment link of the printing parameters is reduced, the time for adjusting the printing parameters is saved, and the printing parameter adjustment efficiency of electrofluid printing is improved.

[0008] In one possible implementation, the method further includes constructing the preset first printing parameter database, wherein the second printing parameter database corresponding to the current printing environment is confirmed from the preset first printing parameter database. Constructing the preset first printing parameter database specifically includes:

[0009] Obtaining a first ink drop parameter set corresponding to printing by the inkjet printer under a first condition, wherein the first condition is adjusting any one or two of the printing environments in a preset manner, while the printing parameters remain unchanged;

[0010] Constructing a first sub-printing parameter database according to the first condition and the first ink drop parameter group;

[0011] Obtaining a second ink drop parameter set corresponding to printing by the inkjet printer under a second condition, wherein the second condition is adjusting any one or two of the printing parameters by a preset unit, while the printing environment remains unchanged;

[0012] constructing a second sub-printing parameter database according to the second condition and the second ink drop parameter group;

[0013] The first printing parameter database is constructed, wherein the first printing parameter database includes the first sub-printing parameter database and the second sub-printing parameter database.

[0014] In the above scheme, the preset printing parameter database is constructed into two parts, one part is the correspondence between the printing environment and the ink droplet parameters, and the other part is the correspondence between the printing parameters and the ink droplet parameters; and combined with the characteristics that the printing environment adjustment is the "switching" of the printing environment (switching from one printing environment to another), and the printing parameter adjustment is the "spacing" of the printing parameters (gradually adjusting the printing parameters in preset units), the printing parameter database is constructed.

[0015] In a possible embodiment, the obtaining of the first ink droplet parameter group corresponding to the inkjet printer printing under the first condition specifically includes: obtaining the first sub-ink droplet parameter group printed by the inkjet printer under the first sub-condition; the first sub-condition is that the printing height, the driving voltage and the printing time are set to fixed values ​​and the first ink material is used, the first printing pinhole size is adjusted to the second printing pinhole size and / or the first substrate material to be printed is adjusted to the second substrate material to be printed; under the second sub-condition, obtaining the second sub-ink droplet parameter group printed by the inkjet printer; the second sub-condition is that the printing height, the driving voltage and the printing time are set to fixed values ​​and the first printing pinhole size is used, the first ink material is adjusted to the second ink material The material and / or the first substrate material to be printed is adjusted to the second substrate material to be printed; under the third sub-condition, a third sub-ink droplet parameter group printed by the inkjet printer is obtained; the third sub-condition is that the printing height, driving voltage and printing time are set to fixed values ​​and the first substrate material to be printed is used, the first ink material is adjusted to the second ink material and / or the first printing pinhole size is adjusted to the second printing pinhole size; the first ink droplet parameter group corresponding to the inkjet printing under the first condition is obtained, the first condition includes the first sub-condition, the second sub-condition and the third sub-condition, and the first ink droplet parameter group includes the first sub-ink droplet parameter group, the second sub-ink droplet parameter group and the third sub-ink droplet parameter group.

[0016] In the above solution, the adjustment method of the printing environment during the construction of the printing parameter database is further described in detail, indicating that the adjustment of the printing environment can be switched separately or two different printing environments can be switched at the same time.

[0017] In one possible embodiment, a first sub-printing parameter database is constructed based on the first condition and the first ink droplet parameter group; specifically, the following steps are performed: establishing a first correspondence between the first sub-condition and the first sub-ink droplet parameter group; establishing a second correspondence between the second sub-condition and the second sub-ink droplet parameter group; establishing a third correspondence between the third sub-condition and the third sub-ink droplet parameter group; and constructing the first correspondence, the second correspondence, and the third correspondence into the first sub-printing parameter database.

[0018] In the above solution, the correspondence between the printing environment and the ink droplet parameters established under various conditions is described, and a method of constructing a printing parameter database is described.

[0019] In a possible embodiment, the obtaining of the second ink droplet parameter group corresponding to the inkjet printer printing under the second condition specifically includes: under the fourth sub-condition, obtaining the fourth sub-ink droplet parameter group printed by the inkjet printer; the fourth sub-condition is that the ink material, the printing pinhole size and the substrate material to be printed remain unchanged, and the printing height is a constant value, and the first driving voltage is adjusted to the second driving voltage and / or the first printing time is adjusted to the second printing time in a preset unit; under the fifth sub-condition, obtaining the fifth sub-ink droplet parameter group printed by the inkjet printer; the fifth sub-condition is that the ink material, the printing pinhole size and the substrate material to be printed remain unchanged, and the driving voltage is a constant value, and the first printing height is adjusted to the second driving voltage and / or the first printing time is adjusted to the second printing time in a preset unit. a second printing height and / or adjusting the first printing time to the second printing time; under the sixth sub-condition, obtaining the sixth sub-ink droplet parameter group printed by the inkjet printer; the sixth sub-condition is that the ink material, the printing pinhole size and the substrate material to be printed remain unchanged, and the printing time is a constant, and the first driving voltage is adjusted to the second driving voltage and / or the first printing height is adjusted to the second printing height in preset units; obtaining the second ink droplet parameter group corresponding to the inkjet printer printing under the second condition; the second condition includes the fourth sub-condition, the fifth sub-condition and the sixth sub-condition, and the second ink droplet parameter group includes the fourth sub-ink droplet parameter group, the fifth sub-ink droplet parameter group and the sixth sub-ink droplet parameter group.

[0020] In the above solution, the adjustment method of the printing parameters during the construction of the printing parameter database is further described in detail, indicating that the adjustment of the printing parameters can be done by adjusting the spacing individually or by adjusting the spacing of two different printing environments simultaneously.

[0021] In one possible embodiment, a second sub-printing parameter database is constructed based on the second condition and the second ink droplet parameter group; specifically including: establishing a fourth correspondence between the fourth sub-condition and the fourth sub-ink droplet parameter group; establishing a fifth correspondence between the fifth sub-condition and the fifth sub-ink droplet parameter group; establishing a sixth correspondence between the sixth sub-condition and the sixth sub-ink droplet parameter group; and constructing the fourth correspondence, the fifth correspondence, and the sixth correspondence into the second sub-printing parameter database.

[0022] In the above solution, the correspondence between printing parameters and ink droplet parameters established under various conditions is described, and a method of constructing a printing parameter database is described.

[0023] In a possible embodiment, the preset unit includes a preset first unit and a preset second unit; the printing parameters are first adjusted using the preset first unit, and then the printing parameters are adjusted using the preset second unit; wherein the printing parameter spacing adjusted by the preset second unit is smaller than the printing parameter spacing adjusted by the preset first unit.

[0024] In the above solution, it is explained that during the construction of the printing parameter database, the spacing adjustment of the printing parameters can be further divided into different spacings such as large spacing, medium spacing, and small spacing. These different spacing divisions are very important for the construction of the printing parameter database.

[0025] In one possible embodiment, a printing operation is performed with the target printing parameters; specifically, the printing operation includes: performing a trial printing with the target printing parameters in a debugging area of ​​a substrate to obtain ink droplet parameters for the trial printing; if the difference between the ink droplet parameters for the trial printing and the ink droplet parameters for the to-be-printed printing is not within a preset range, adjusting any one or two of the target printing parameters with preset sub-units to obtain adjusted target printing parameters, wherein the adjusted target printing parameters make the difference between the ink droplet parameters for the trial printing and the ink droplet parameters for the to-be-printed printing within a preset range; wherein the spacing of the printing parameters adjusted with the preset sub-units is smaller than the spacing of the printing parameters adjusted with the preset units; and performing a printing operation with the adjusted target printing parameters in a formal printing area of ​​the substrate.

[0026] The above solution demonstrates that building a printing parameter database often cannot be completed in one go; further fine-tuning may be required during the inkjet printer's printing process. This also reflects that adjusting inkjet printer printing parameters is a very complex issue, influenced by numerous factors. The number of adjustable printing parameters is often limited compared to the factors influencing the printing parameters. Therefore, adjusting printing parameters cannot rely solely on building a printing parameter database in the early stages; fine-tuning of printing parameters during actual printing is also necessary.

[0027] In one possible embodiment, the ink droplet parameters to be printed include any one of the following: the ink droplet parameters to be printed corresponding to the sub-pixel area of ​​the substrate to be repaired; the ink droplet parameters to be printed corresponding to the sub-pixel area of ​​the substrate debugging area; and the ink droplet parameters to be printed corresponding to the sub-pixel area of ​​the substrate formal printing area.

[0028] In the above solution, several application scenarios of commonly used parameters of ink droplets to be printed are disclosed; of course, other application scenarios of electrofluid printing may also be included.

[0029] In one possible embodiment, a second printing parameter database corresponding to the current printing environment is confirmed from a preset first printing parameter database; before that, the method also includes constructing the preset first printing parameter database, and constructing the preset first printing parameter database specifically includes: obtaining a third ink drop parameter group corresponding to printing by the inkjet printer under a third condition, and the third condition is to adjust any one or two environments in the printing environment in a preset manner, and adjust any one or two parameters of the printing parameters with a preset third unit; constructing the preset first printing parameter database according to the third condition and the third ink drop parameter group.

[0030] In the above scheme, after changing one or two environments, the printing parameters are adjusted by a large-pitch adjustment method to obtain the corresponding relationship between the printing dot diameter D1 and the environmental factors X1, X2... and the printing parameters x1, x2, x3...: D1 = f(X1, X2,...x1, x2, x3...).

[0031] In one possible embodiment, a second printing parameter database corresponding to the current printing environment is confirmed from a preset first printing parameter database; specifically comprising: selecting a printing parameter group matching the current printing environment from the preset first printing parameter database; obtaining a fourth ink drop parameter group corresponding to printing by the inkjet printer under a fourth condition, wherein the fourth condition is to adjust any one or two parameters in the printing parameter group by a preset fourth unit; constructing the second printing parameter database according to the fourth condition and the fourth ink drop parameter group; wherein the printing parameter spacing adjusted by the fourth unit is smaller than the printing parameter spacing adjusted by the third unit.

[0032] In the above scheme, according to the current printing environment From the preset first printing parameter database, select the printing data group that is closest to the printing environment, and use it as a reference to establish a second printing parameter database with a smaller printing parameter spacing (or gap) Further improve the efficiency of adjusting printing parameters.

[0033] In one possible implementation, querying the target printing parameters corresponding to the ink droplet parameters from the second printing parameter database includes: selecting a first ink droplet diameter D1 and a second ink droplet diameter D2 close to the ink droplet diameter D0 to be printed from the second printing parameter database; wherein D1≤D0≤D2; obtaining a printing parameter group (x 11 、x 12 、x 13 ...) and the printing parameter group corresponding to the second ink droplet diameter (x 21 、x 22 、x23 ...);where x ij is the jth printing parameter corresponding to the i-th ink droplet diameter; the target printing parameter (x 01 、x 02 、x 03 , ...); wherein the preset method is:

[0034]

[0035] In the above scheme, the ink droplet parameters take the ink droplet diameter as an example, indicating that in practice it would be ideal if the target printing parameters corresponding to the ink droplet diameter could be directly found. Therefore, a method of querying the target printing parameters corresponding to the ink droplet diameter is given as an example to improve the efficiency of adjusting the printing parameters.

[0036] In a second aspect, the present application discloses an inkjet printer, comprising a processor, a memory, a display, and a network interface, wherein the memory is used to store instructions, the display and the network interface are both used to communicate with other devices, and the processor is used to execute the instructions stored in the memory so that the inkjet printer performs the following operations:

[0037] Obtaining a current printing environment, wherein the printing environment includes ink material of the inkjet printer, printing pinhole size, and substrate material to be printed;

[0038] Confirming a second printing parameter database corresponding to the current printing environment from a preset first printing parameter database; the first printing parameter database includes a correspondence between the printing environment and the second printing parameter database;

[0039] Obtaining ink droplet parameters to be printed, wherein the ink droplet parameters include ink droplet diameter;

[0040] querying a second printing parameter database for target printing parameters corresponding to the ink droplet parameters; the target printing parameters include a printing height, a driving voltage, and a printing time; the driving voltage is a voltage value corresponding to a nozzle in the inkjet printer ejecting an ink droplet, and the printing time is a duration for the nozzle to eject an ink droplet once;

[0041] The printing operation is performed with the target printing parameters.

[0042] In the third aspect of the present application, an electronic device is provided, including a processor, a memory, a display, and a network interface, wherein the memory is used to store instructions, the display and the network interface are both used to communicate with other devices, and the processor is used to execute the instructions stored in the memory so that the electronic device executes any one of the methods described above.

[0043] In a fourth aspect of the present application, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores instructions. When the instructions are executed, any one of the methods described above is executed.

[0044] The present application can improve the efficiency of adjusting printing parameters of electrofluid printing, reduce the manual adjustment steps of printing parameters, and save the time of adjusting printing parameters. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 This is a flow chart of a method for adjusting printing parameters related to electrofluidic printing disclosed in this application specification;

[0046] Figure 2 This is a flow chart of another method for adjusting printing parameters related to electrofluidic printing disclosed in this application specification;

[0047] Figure 3 This is a flow chart of another method for adjusting printing parameters related to electrofluidic printing disclosed in this application specification;

[0048] Figure 4 This is a schematic diagram of the structure of an LED chip on a substrate disclosed in this application specification;

[0049] Figure 5a A schematic diagram of printing parameters for electrofluidic printing disclosed in this application specification;

[0050] Figure 5b This is a schematic diagram of ink droplet parameters for electrofluid printing disclosed in this application specification;

[0051] Figure 6 This is a schematic structural diagram of an inkjet printer device disclosed in this application specification.

[0052] Figure 3 and Figure 4 Middle: LED chip 401, solder pad 402, substrate 403, nozzle module 501, printing height H, driving voltage V. DETAILED DESCRIPTION

[0053] In order to enable those skilled in the art to better understand the technical solutions in this specification, the technical solutions in the embodiments of this specification will be clearly and completely described below in conjunction with the drawings in the embodiments of this specification. Obviously, the described embodiments are only part of the embodiments of this application, not all of the embodiments.

[0054] In the description of the embodiments of this application, words such as "for example" or "for instance" are used to indicate examples, illustrations, or explanations. Any embodiment or design described as "for example" or "for instance" in the embodiments of this application should not be construed as being preferred or advantageous over other embodiments or designs. Rather, the use of words such as "for example" or "for instance" is intended to present the relevant concepts in a concrete manner.

[0055] In the description of the embodiments of the present application, the term "multiple" means two or more. For example, multiple systems refer to two or more systems, and multiple screen terminals refer to two or more screen terminals. In addition, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized.

[0056] The following are examples of electrofluidic printing applications in this specification: Micro-LEDs are used in the manufacture of Micro-LED display panels due to their ultra-small size (typically less than 100 microns), scalability (Micro-LED panels can be freely spliced ​​and assembled to form displays of any size), modularity, and high integration. In inkjet printing, two ink droplets (electrofluidic ink) are typically printed on a sub-pixel area on a substrate using an inkjet printer. The positive and negative pins of the Micro-LED chip (hereinafter referred to as the LED chip for ease of description in this specification) are then connected to the two ink droplets.

[0057] In this manual, the sub-pixel area corresponds to an LED chip that emits monochromatic light, such as red R, green G, and blue B. Ink droplet parameters (also known as ink parameters) include multiple parameters. For the sake of convenience, this manual uses the ink droplet diameter (also known as ink droplet diameter) as an example for explanation. Printing parameters also include multiple parameters. This manual uses the main parameters of the electrofluid inkjet printer printing parameters for explanation. The main parameters include the driving voltage (such as Figure 5a V shown), print height (as shown Figure 5a H), substrate material, ink material, printing pinhole size and printing time. Figure 5a As shown, the nozzle module 501 prints on the substrate 403.

[0058] In the process of electrofluid inkjet printing, there are many factors that affect the parameters of ink droplets (for example, in addition to the above-mentioned driving voltage, there are also waveform parameters of the driving voltage (such as square wave, pulse, sine wave, etc.), etc., which are not listed one by one); and some of these factors cannot be adjusted. In order to improve the ink droplet printing effect of inkjet printing, the adjustable printing parameters are often adjusted in the hope of obtaining qualified ink droplet parameters. Especially for micron-level printing of electrofluids, the adjustment of printing parameters takes a lot of time and requires continuous test printing; therefore, how to reduce the adjustment of electrofluid printing parameters becomes very important.

[0059] The term "drive voltage" in this specification refers to a constant voltage applied to an inkjet printhead to maintain its normal operation. The drive voltage is typically used to maintain the charge state of the ink in the inkjet printhead, ensuring stable droplet ejection from the nozzle. It also helps control droplet formation and ejection, thereby affecting the print quality of droplet parameters. The print height refers to the vertical distance between the inkjet printhead and the substrate. This distance is critical to the print quality of droplet parameters because it affects the droplet's flight trajectory and deposition position. The print pinhole size refers to the diameter of the nozzle in the inkjet printhead. In inkjet printing, a smaller print pinhole size generally means higher printing accuracy and more detailed print results. However, a smaller pinhole size also increases the manufacturing process requirements and may affect ink ejection efficiency and reliability. In an inkjet printer, the print time refers to the duration of the voltage signal applied to the ink droplet. If the print time is too short, the droplet may not gain sufficient kinetic energy to eject properly. If the print time is too long, excessive droplet ejection may result, forming satellite droplets or causing image distortion. The physical and chemical properties of the ink material, such as viscosity, surface tension, conductivity and relative dielectric constant, also affect the printing quality of the ink drop parameters; the surface properties of the substrate material, such as surface tension and contact angle, affect the spreading and adhesion of the ink on the substrate, and also affect the printing quality of the ink drop parameters.

[0060] The driving voltage in this specification refers to the voltage value corresponding to the inkjet printer nozzle ejecting ink droplets. The voltage value that is insufficient to eject ink droplets is not the driving voltage in this specification. In addition, the printing time in this specification refers to the duration of the inkjet printer nozzle ejecting an ink droplet. For example, when the waveform of the driving voltage is a square wave, the duration of the high level is the printing time in this specification (in practice, the ejection may not start immediately when the square wave high level appears, nor will it stop immediately when the square wave returns to a low level. There may be a short start time and a stop time). When the waveform of the driving voltage is a pulse, the printing time in this specification is the pulse duration (in practice, there may be a certain delay in starting and stopping the ejection process, so the ejection time may be slightly longer than the pulse duration).

[0061] In addition, the effects of two printing parameters, drive voltage and printing time, on ink droplet parameters are briefly explained. In electrofluidic inkjet printing, the relationship between charge density and applied voltage and time can be understood through the process of charge accumulation. When voltage is applied, charge accumulates on the fluid surface near the nozzle, forming a charge density. This process can be roughly viewed as the accumulation of charge Q over printing time t, with the drive voltage V acting as a force to move the charge. Therefore, charge density ρ can be viewed as a function of voltage V and charge accumulation time t, i.e., ρ ∝ V ​​× t; the "∝" here indicates a proportional relationship, not a simple equation. This means that, all other conditions remaining unchanged, charge density is proportional to the product of drive voltage and printing time. Different charge densities lead to different ejection patterns. For example, when charge density is low, ink may drip from the nozzle in larger sizes due to gravity and a weaker electric field, resulting in larger droplet diameters. In contrast, when charge density is high, a stable Taylor cone is formed, and ink is ejected continuously from the nozzle in a conical jet pattern, producing smaller droplet diameters.

[0062] This specification discloses a method for adjusting printing parameters related to electrofluidic printing, such as Figure 1 The printing parameter adjustment method includes steps S100-S500.

[0063] S100: Acquire the current printing environment, where the printing environment includes the ink material of the inkjet printer, the printing pinhole size, and the substrate material to be printed.

[0064] It should be noted that this manual illustrates three printing environments, but the actual printing environment is not limited to these. These three printing environments are the most influential printing environment parameters. In a specific inkjet printing process, the printing environment (such as the aforementioned ink material, printing pinhole size, and substrate material to be printed) is often fixed; therefore, it is necessary to screen the pre-established printing parameter database based on the printing environment.

[0065] In addition, the printing environment parameters are actually also printing parameters. In an actual printing operation, the printing environment is often determined. Therefore, for the sake of convenience, this specification describes the printing environment parameters and the printing parameters separately. It is known to those skilled in the art that it should not be understood that there is an essential difference between the printing environment parameters and the printing parameters.

[0066] S200: Confirming a second printing parameter database corresponding to a current printing environment from a preset first printing parameter database; the first printing parameter database includes a correspondence between the printing environment and the second printing parameter database.

[0067] In this case, the preset first printing parameter database is a database of correspondences between various printing environments, various printing parameters, and various ink droplet parameters. In one example, the printing parameters and ink droplet parameters corresponding to the current printing environment are obtained from the preset first printing parameter database; the printing parameters and ink droplet parameters corresponding to the current printing environment are then constructed into a second printing parameter database. The second printing parameter database includes correspondences between the current printing environment, the printing parameters, and the ink droplet parameters.

[0068] In one example, before S200, a preset first printing parameter database needs to be constructed. The construction of the preset first printing parameter database is to gradually build a database by changing one or two parameters (printing environment parameters or printing parameters) each time during the test printing to obtain the corresponding relationship between the parameters (printing environment parameters or printing parameters) and the ink drop parameters. Figure 2 As shown, constructing the preset first printing parameter database specifically includes steps S201-S205.

[0069] S201. Obtain a first ink drop parameter group corresponding to printing by an inkjet printer under a first condition, wherein the first condition is to adjust any one or two printing environments in a preset manner, and the printing parameters remain unchanged.

[0070] In one example, obtaining a first ink drop parameter group corresponding to printing by an inkjet printer under a first condition specifically includes: Figure 3 Steps S301-S304 are shown.

[0071] S301. Under the first sub-condition, a first sub-ink droplet parameter group printed by the inkjet printer is obtained; the first sub-condition is that the printing height, driving voltage and printing time are set to fixed values ​​and a first ink material is used, the first printing pinhole size is adjusted to a second printing pinhole size and / or the first substrate material to be printed is adjusted to a second substrate material to be printed.

[0072] In this case, the print pinhole size can be adjusted alone, and a test print can be performed to obtain the ink droplet parameters for the test print. This will allow the corresponding relationship between the print pinhole size and the ink droplet parameters to be determined, while other printing parameters remain unchanged (including the first sub-conditions of print height, drive voltage, print time, and ink material). Similarly, the substrate material can be adjusted alone to obtain the corresponding relationship between the substrate material and the ink droplet parameters, while other printing parameters remain unchanged. Furthermore, the print pinhole size and substrate material can be adjusted simultaneously to obtain the corresponding relationship between the print pinhole size, substrate material, and ink droplet parameters.

[0073] However, this manual does not limit the number of times that the printing pinhole size or substrate material can be adjusted; during the database construction process, the number of test prints is often limited, which means that the number of times the printing pinhole size and substrate material can be adjusted is also limited. Therefore, during actual inkjet printing, if the pinhole size and substrate material of a particular print are not included in the pre-built print parameter database, the database can also add the corresponding relationship between the printing pinhole size, substrate material, ink droplet parameters, and other printing parameters of this print to the print parameter database. Taking the printing pinhole size as an example, the following pinhole sizes can be used for test prints: 5μm and 10μm.

[0074] S302. Under the second sub-condition, a second sub-ink droplet parameter group printed by the inkjet printer is obtained; the second sub-condition is that the printing height, the driving voltage and the printing time are set to fixed values ​​and the first printing pinhole size is used, the first ink material is adjusted to the second ink material and / or the first substrate material to be printed is adjusted to the second substrate material to be printed.

[0075] Referring to S301, the ink material can be adjusted alone, and a test print can be performed to obtain the ink droplet parameters for the test print. This allows the corresponding relationship between the ink material and the ink droplet parameters to be determined, while other printing parameters remain unchanged (including the print height, drive voltage, print time, and print pinhole size in the second sub-condition). Similarly, the substrate material can be adjusted alone, while other printing parameters remain unchanged, to obtain the corresponding relationship between the substrate material and the ink droplet parameters. Alternatively, the ink and substrate materials can be adjusted simultaneously, and a test print can be performed to obtain the ink droplet parameters. This allows the corresponding relationship between the ink droplet parameters, the ink material, and the substrate material to be determined.

[0076] This manual does not limit the number of times the ink material or substrate material can be adjusted. During database construction, the number of print parameter adjustments will be increased as much as possible to obtain as many corresponding relationships between print parameters, printing environments, and ink droplet parameters as possible. In practice, there may be instances where the ink material or substrate material used in a print is not included in the pre-built print parameter database. In this case, the database will record the corresponding relationships between the ink material, substrate material, ink droplet parameters, and other printing parameters for this print, and store them in the print parameter database so that they can be directly used the next time.

[0077] S303. Under the third sub-condition, a third sub-ink droplet parameter group printed by the inkjet printer is obtained; the third sub-condition is that the printing height, driving voltage and printing time are set to fixed values ​​and the first substrate material to be printed is used, the first ink material is adjusted to the second ink material and / or the first printing pinhole size is adjusted to the second printing pinhole size.

[0078] Referring to S301 and S302, the ink material can be adjusted separately, and a test print can be performed to obtain the ink droplet parameters for the test print. This allows the corresponding relationship between the ink material and the ink droplet parameters to be obtained, while other printing parameters remain unchanged (including the third sub-conditions of print height, drive voltage, print time, and substrate material). Similarly, the print pinhole size can be adjusted separately, and a test print can be performed to obtain the ink droplet parameters for the test print. This allows the corresponding relationship between the print pinhole size and the ink droplet parameters to be obtained, while other printing parameters remain unchanged. Furthermore, the ink material and print pinhole size can be adjusted simultaneously, and a test print can be performed to obtain the corresponding relationship between the ink material, print pinhole size, and ink droplet parameters.

[0079] By adjusting the pinhole size, ink material, or both multiple times, multiple sets of corresponding relationships can be generated and stored in the print parameter database. During actual printing, if a pinhole size or ink material is not included in the pre-built print parameter data, the database will store the corresponding relationships for other printing parameters, such as the pinhole size, ink material, and ink droplet parameters, to further increase the number of corresponding relationships in the print parameter database.

[0080] S304. Obtain a first ink drop parameter group corresponding to inkjet printing under a first condition, where the first condition includes a first sub-condition, a second sub-condition, and a third sub-condition, and the first ink drop parameter group includes a first sub-ink drop parameter group, a second sub-ink drop parameter group, and a third sub-ink drop parameter group.

[0081] S202: Construct a first sub-printing parameter database according to the first condition and the first ink drop parameter group.

[0082] In one example, a first correspondence between a first sub-condition and a first sub-ink droplet parameter group is established; a second correspondence between a second sub-condition and a second sub-ink droplet parameter group is established; a third correspondence between a third sub-condition and a third sub-ink droplet parameter group is established; and the first correspondence, the second correspondence, and the third correspondence are constructed into a first sub-printing parameter database.

[0083] At this time, the corresponding relationships between various sub-conditions in the first condition are constructed into a first sub-printing parameter database.

[0084] S203: Obtain a second ink drop parameter group corresponding to printing by the inkjet printer under a second condition, where the second condition is to adjust any one or two of the printing parameters by a preset unit, while the printing environment remains unchanged.

[0085] In one example, the second condition is divided into three sub-conditions for further explanation, as follows:

[0086] Under the fourth sub-condition, the fourth sub-ink droplet parameter group printed by the inkjet printer is obtained; the fourth sub-condition is that the ink material, the printing pinhole size and the substrate material to be printed remain unchanged, and the printing height is a constant value, and the first driving voltage is adjusted to the second driving voltage and / or the first printing time is adjusted to the second printing time in preset units.

[0087] Similar to S301-S303, the drive voltage can be adjusted individually to perform a test print and obtain the ink droplet parameters for the test print. This allows you to obtain the corresponding relationship between the drive voltage and ink droplet parameters when other printing parameters remain unchanged (including the ink material, print pinhole size, substrate material to be printed, and print height under the fourth sub-condition). Similarly, the print time can be adjusted individually to perform a test print and obtain the ink droplet parameters for the test print; this allows you to obtain the corresponding relationship between the print time and ink droplet parameters when other printing parameters remain unchanged. Furthermore, you can also adjust the drive voltage and print time simultaneously to obtain the corresponding relationship between the drive voltage, print time, and ink droplet parameters.

[0088] Similar to S301-S303, this manual does not limit the number of times the drive voltage and print time can be adjusted. However, if the print parameter database does not store the drive voltage and print time for a particular print process, the print parameter database will re-store the corresponding relationship between the drive voltage, print time, and other printing parameters, such as ink droplet parameters. Unlike S301-S303, the number of test prints for the drive voltage, print time, and subsequent print height is often much greater than the number of test prints for substrate material, ink material, or print pinhole size. Therefore, when performing test prints for the drive voltage, print time, and subsequent print height, a preset unit adjustment method can be adopted.

[0089] In one example, the preset units include a first preset unit and a second preset unit; the printing parameters are first adjusted using the first preset unit, and then the printing parameters are adjusted using the second preset unit; wherein the spacing of the printing parameters adjusted using the second preset unit is smaller than the spacing of the printing parameters adjusted using the first preset unit. This specification uses the first preset unit and the second preset unit as examples to illustrate that adjusting printing parameters using multiple preset units is possible, and is not limited to adjusting using only two preset units; this specification also allows for adjustment using multiple preset units. For example, taking print height adjustment as an example, when the first unit adjustment spacing is preset to 1μm, test printing can be performed at print heights of 25μm, 26μm, 27μm, 28μm, 29μm, 30μm, 31μm, ...; if the second unit adjustment spacing is preset to 0.5μm, between 25μm-26μm, test printing can be performed at a print height of 25.5μm; if 0.2μm is further used as the print height adjustment spacing, between 25μm-26μm, further printing tests can be performed at print heights of 25.2μm, 25.4μm, 25.6μm, and 25.8μm.

[0090] The preset units in this manual use a larger spacing first, followed by a smaller spacing. This approach not only improves the efficiency of building the printing parameter database, but also, when actually using the printing parameter database, allows for the first rough positioning of the ink droplet parameters to determine the corresponding printing parameter range. This can then be followed by further fine-tuning, or gradually fine-tuning, the positioning to the corresponding printing parameter range, further improving the efficiency of automatic printing parameter adjustment. Furthermore, the requirements for ink droplet parameters vary in different usage scenarios, making it possible to match a wider range of different ink droplet parameter requirements.

[0091] Under the fifth sub-condition, the fifth sub-ink droplet parameter group printed by the inkjet printer is obtained; the fifth sub-condition is that the ink material, the printing pinhole size and the substrate material to be printed remain unchanged, and the driving voltage is a constant value, and the first printing height is adjusted to the second printing height and / or the first printing time is adjusted to the second printing time in preset units.

[0092] Refer to the fourth sub-condition above. The print height can be adjusted separately, and a test print can be performed to obtain the ink droplet parameters of the test print. The corresponding relationship between the print height and the ink droplet parameters can be obtained when other printing parameters remain unchanged (including the ink material, printing pinhole size, and substrate material to be printed, and driving voltage under the fifth sub-condition). Similarly, the print time can be adjusted separately, and a test print can be performed to obtain the ink droplet parameters of the test print; the corresponding relationship between the print time and the ink droplet parameters can be obtained when other printing parameters remain unchanged. In addition, the print height and print time can also be adjusted at the same time to obtain the corresponding relationship between the driving voltage, print time, and ink droplet parameters.

[0093] In addition, this manual does not limit the number of times you can adjust the print height and print time. However, if the print parameter database does not store the print height and print time for a certain print process, the print parameter database will store the corresponding relationship between the print height, print time, ink drop parameters, and other printing parameters for this print process.

[0094] Under the sixth sub-condition, the sixth sub-ink droplet parameter group printed by the inkjet printer is obtained; the sixth sub-condition is that the ink material, the printing pinhole size and the substrate material to be printed remain unchanged, and the printing time is a constant value, and the first driving voltage is adjusted to the second driving voltage and / or the first printing height is adjusted to the second printing height in preset units.

[0095] Refer to the fourth sub-condition above. The printing height can be adjusted separately, and a test print can be performed to obtain the ink droplet parameters of the test print. The corresponding relationship between the printing height and the ink droplet parameters can be obtained when other printing parameters remain unchanged (including the ink material, printing pinhole size, substrate material to be printed, and printing time under the sixth sub-condition). Similarly, the driving voltage can be adjusted separately, and a test print can be performed to obtain the ink droplet parameters of the test print; the corresponding relationship between the driving voltage and the ink droplet parameters can be obtained when other printing parameters remain unchanged. In addition, the printing height and driving voltage can also be adjusted at the same time to obtain the corresponding relationship between the driving voltage, printing height, and ink droplet parameters.

[0096] Furthermore, this manual does not limit the number of times you can adjust the print height or drive voltage. However, if the print parameter database does not store the print height and drive voltage for a particular print process, the print parameter database will store the corresponding relationship between the print height, drive voltage, and ink droplet parameters for that print process.

[0097] Obtain a second ink drop parameter group corresponding to printing by the inkjet printer under the second condition; the second condition includes a fourth sub-condition, a fifth sub-condition, and a sixth sub-condition, and the second ink drop parameter group includes a fourth sub-ink drop parameter group, a fifth sub-ink drop parameter group, and a sixth sub-ink drop parameter group.

[0098] S204: Construct a second sub-printing parameter database according to the second condition and the second ink drop parameter group.

[0099] In one example, a fourth correspondence is established between the fourth sub-condition and the fourth sub-ink droplet parameter group; a fifth correspondence is established between the fifth sub-condition and the fifth sub-ink droplet parameter group; a sixth correspondence is established between the sixth sub-condition and the sixth sub-ink droplet parameter group; and the fourth correspondence, the fifth correspondence, and the sixth correspondence are constructed into a second sub-printing parameter database.

[0100] At this time, the corresponding relationships between various sub-conditions under the second condition are constructed into a second sub-printing parameter database.

[0101] S205 : Construct a first printing parameter database, where the first printing parameter database includes a first sub-printing parameter database and a second sub-printing parameter database.

[0102] At this point, the construction of the first printing parameter database is completed through the above steps.

[0103] S300: Obtain parameters of ink droplets to be printed, where the ink droplet parameters include ink droplet diameter.

[0104] S400: Query target printing parameters corresponding to ink droplet parameters from a second printing parameter database; the target printing parameters include printing height, driving voltage, and printing time. The driving voltage is the voltage value corresponding to the ejection of ink droplets by a nozzle in the inkjet printer, and the printing time is the duration of the ejection of an ink droplet by the nozzle.

[0105] S500: Execute a printing operation with target printing parameters.

[0106] At this point, directly print in the substrate's main print area using the target print parameters. If the printed ink droplet parameters are outside the preset ink droplet parameter range, indicating unsatisfactory printing, fine-tune the print parameters and print in the substrate's test area. If the fine-tuned ink droplet parameters meet the requirements, print again in the substrate's main print area.

[0107] The following is an example to illustrate fine-tuning.

[0108] In one example, a trial print is performed in a debugging area of ​​a substrate with target printing parameters to obtain ink droplet parameters for the trial print; if the difference between the ink droplet parameters for the trial print and the ink droplet parameters to be printed is not within a preset range, any one or two of the target printing parameters are adjusted with preset sub-units to obtain adjusted target printing parameters, and the adjusted target printing parameters make the difference between the ink droplet parameters for the trial print and the ink droplet parameters to be printed within a preset range; wherein the spacing of the printing parameters adjusted with the preset sub-units is smaller than the spacing of the printing parameters adjusted with the preset units; and a printing operation is performed in a formal printing area of ​​the substrate with the adjusted target printing parameters.

[0109] See the discussion in S301. The printing parameter database constructed in this specification will store as many correspondences between various printing parameters, printing environments, and ink droplet parameters as possible. However, in practice, ink droplet parameters are affected by many factors, such as temperature, humidity, noise, vibration, etc., which can all affect ink droplet parameters. Therefore, the printing parameter adjustment algorithm must not only adjust the printing parameters based on the pre-constructed printing parameter database, but also be able to further fine-tune the printing parameters based on the adjusted parameters, so that the final printed ink droplet parameters meet the requirements.

[0110] It should be noted that the fine-tuning in the above example is based on the premise that the printing parameters have been adjusted using a pre-built printing parameter database. If the printing parameters are not adjusted using a pre-built printing parameter database, the effect of the fine-tuning here will be greatly reduced.

[0111] At this time, in the actual inkjet printing process, the printing parameters adjusted by the preset sub-unit (fine-tuning) include printing height, printing time and driving voltage. The spacing of the printing parameters adjusted by the preset sub-unit is smaller than the spacing of the printing parameters adjusted by the preset unit. For example: referring to the example of S203, the adjustment spacing of the printing height is set to 0.1μm, then between 25.2μm and 25.4μm, a printing test will also be performed on 25.3μm. In addition, the spacing adjusted by the preset sub-unit here should be regarded as the smallest spacing among the various ways of adjusting the printing parameters of the inkjet printer; when this manual adopts the preset third unit and the preset fourth unit below to construct the printing parameter database, the spacing of the printing parameters adjusted by the preset sub-unit is still smaller than the spacing of the printing parameters adjusted by the preset third unit and the preset fourth unit.

[0112] The following combination Figure 5b , further explanation is given on the above-mentioned preset units and preset sub-units (fine-tuning).

[0113] like Figure 5b As shown, the fifth column shows an ink drop parameter ( Figure 5bThe ideal state or standard state of the ink droplet diameter is (in the middle), and in the actual inkjet printing process, the printed ink droplet diameter = (1±5%) standard state, and the printed ink droplet diameter is considered to be qualified. The 4th column shows the ink droplet pattern with qualified ink droplet diameter relative to the standard state in the 5th column; the 1st column, the 2nd column and the 3rd column show the ink droplet pattern with unqualified ink droplet diameter relative to the standard state in the 5th column. Assuming that the ink droplet diameter in the 5th column is the ink droplet parameter to be printed this time, the printing parameters corresponding to the ink droplet diameter in the 4th column can be directly found from the above-mentioned printing parameter database, and the printing parameters of the inkjet printer are adjusted. If only the printing parameters corresponding to the ink droplet diameter in the 3rd column (or the 1st column or the 2nd column) can be queried in the printing parameter database, then it is necessary to further fine-tune the printing parameters for test printing until the ink droplet diameter is adjusted to the state of the 4th column or the 5th column; and the printing parameters corresponding to the ink droplet diameters in the 4th and 5th columns will be updated to the printing parameter database.

[0114] Combine Figure 5b Taking the printing height adjustment as an example, the printing height corresponding to the first column is H1, the printing height of the second column is H2=H1±Δh1, the third column is H3=H2±Δh2, and the fourth column is H4=H3±Δh3; at this time, the printing height adjustment spacing is Δh1, Δh2 and Δh3, Δh1 and Δh2 can be the same or different; Δh3 is often smaller than Δh1 and Δh2, that is, the printing parameters corresponding to the ink droplet diameter in the fourth column are fine-tuned.

[0115] In the process of building the printing parameter database in this manual, the correspondence between various printing parameters and ink drop parameters;

[0116] In one example, the ink droplet parameters to be printed in this specification include any one of the following: the sub-pixel area of ​​the substrate to be repaired, and the corresponding ink droplet parameters to be printed; the sub-pixel area of ​​the substrate debugging area, and the corresponding ink droplet parameters to be printed; the sub-pixel area of ​​the substrate formal printing area, and the corresponding ink droplet parameters to be printed.

[0117] This example indicates that the electrofluidic printing parameter adjustment method disclosed in this specification can be applied to a variety of scenarios and does not limit the applicable scenarios. This specification provides the above-mentioned common examples. Figure 4 Schematic diagram of the sub-pixel area to be repaired is shown in FIG. 4 . When the LED chip 401 is defective, ink droplets (eg, silver paste) need to be reprinted on the two pads 402 , and then a new LED chip is installed on the pads 402 to replace the damaged chip.

[0118] In one example, the present application specification can also construct a preset first printing parameter database in the following manner: obtain a third ink drop parameter group corresponding to the inkjet printer printing under a third condition, the third condition is to adjust any one or two environments in the printing environment in a preset manner, and adjust any one or two parameters in the printing parameters with a preset third unit; based on the third condition and the third ink drop parameter group, construct a preset first printing parameter database.

[0119] In the above examples, one of the printing environments can be adjusted, and one or both of the printing parameters can be adjusted; or both of the printing environments can be adjusted, and one or both of the printing parameters can be adjusted. This indicates that the printing environments and printing parameters can be adjusted in a flexible combination, allowing some printing environments and some printing parameters to remain unchanged while others can be changed. This results in a correspondence between printing parameters (including both changed and unchanged printing parameters), printing environments (including both changed and unchanged printing environments), and ink droplet parameters.

[0120] The printing parameter database obtained by the above example can obtain the correspondence between various printing environments, various printing parameters and ink drop parameter groups. In the application of the first printing parameter database, the following examples can also be used to further improve the adjustment efficiency of printing parameters.

[0121] Based on the above example, in another example, a second printing parameter database corresponding to the current printing environment is confirmed from a preset first printing parameter database; specifically, the method includes: selecting a printing parameter group that matches the current printing environment from the preset first printing parameter database; obtaining a fourth ink drop parameter group corresponding to the inkjet printer printed under a fourth condition, where the fourth condition is to adjust any one or two parameters in the printing parameter group with a preset fourth unit; constructing a second printing parameter database based on the fourth condition and the fourth ink drop parameter group; wherein the printing parameter spacing adjusted by the fourth unit is smaller than the printing parameter spacing adjusted by the third unit.

[0122] At this time, the match here can be understood as the same, that is, selecting the same printing parameter group as the current printing environment from the preset first printing parameter database; the match can also be understood as close, that is, if the preset first printing parameter database does not yet store the same printing environment as the current printing environment, you can also select a printing environment close to the current printing environment, and use the printing parameter group corresponding to the close printing environment for subsequent operations.

[0123] In addition, the target printing parameters corresponding to the ink droplet parameters are queried from the second printing parameter database. This can also be done in the following manner: a first ink droplet diameter D1 and a second ink droplet diameter D2 close to the ink droplet diameter D0 to be printed are selected from the second printing parameter database; wherein D1≤D0≤D2; a printing parameter group (x 11 、x 12 、x 13 ...) and the printing parameter group corresponding to the second ink droplet diameter (x 21 、x 22 、x 23 ...);where x ij is the jth printing parameter corresponding to the i-th ink droplet diameter; the target printing parameter (x 01 、x 02 、x 03 , ...); among which, the preset method is:

[0124]

[0125] The above examples use ink droplet diameter as an example. In practice, in most cases, the printing parameters corresponding to the ink droplet diameter can be directly obtained from the second printing parameter database, that is, D1 = D0 and / or D2 = D0. When a certain ink droplet diameter is not currently stored in the second printing parameter database, subsequent operations can be performed using an ink droplet diameter that is close to it. "Close" here can be understood as "closest"; in actual calculations, the difference between the aforementioned dot diameters D1 and D2 and D0 can be considered to be within a preset range. The aforementioned j printing parameters are the printing parameters disclosed in this specification.

[0126] In summary, the method described in this specification can improve the efficiency of adjusting printing parameters in electrofluidic printing.

[0127] This specification also discloses an inkjet printer, which includes a processor, a memory, a display, and a network interface. The memory is used to store instructions, the display and the network interface are used to communicate with other devices, and the processor is used to execute the instructions stored in the memory to enable the inkjet printer to perform the following operations:

[0128] Get the current printing environment, which includes the ink material of the inkjet printer, the printing pinhole size, and the substrate material to be printed;

[0129] Confirming a second printing parameter database corresponding to the current printing environment from a preset first printing parameter database; the first printing parameter database includes a correspondence between the printing environment and the second printing parameter database;

[0130] Obtaining ink droplet parameters to be printed, including ink droplet diameter;

[0131] Querying target printing parameters corresponding to the ink droplet parameters from a second printing parameter database; the target printing parameters include printing height, driving voltage, and printing time; the driving voltage is the voltage value corresponding to the ejection of ink droplets by a nozzle in an inkjet printer, and the printing time is the duration of the nozzle ejecting an ink droplet;

[0132] Execute the print operation with target print parameters.

[0133] In one example, constructing a preset first printing parameter database specifically includes: obtaining a first ink drop parameter group corresponding to printing by an inkjet printer under a first condition, the first condition being to adjust any one or two environments in the printing environment in a preset manner, and the printing parameters remain unchanged; constructing a first sub-printing parameter database based on the first condition and the first ink drop parameter group; obtaining a second ink drop parameter group corresponding to printing by an inkjet printer under a second condition, the second condition being to adjust any one or two parameters in the printing parameters in preset units, and the printing environment remains unchanged; constructing a second sub-printing parameter database based on the second condition and the second ink drop parameter group; constructing a first printing parameter database, the first printing parameter database including a first sub-printing parameter database and a second sub-printing parameter database.

[0134] In one example, obtaining a first ink droplet parameter group corresponding to printing by an inkjet printer under a first condition specifically includes: obtaining a first sub-ink droplet parameter group printed by the inkjet printer under a first sub-condition; under the first sub-condition, the printing height, the driving voltage, and the printing time are set to fixed values ​​and the first ink material is used, and the first printing pinhole size is adjusted to the second printing pinhole size and / or the first substrate material to be printed is adjusted to the second substrate material to be printed; under the second sub-condition, obtaining a second sub-ink droplet parameter group printed by the inkjet printer; under the second sub-condition, the printing height, the driving voltage, and the printing time are set to fixed values ​​and the first printing pinhole size is used, and the first ink material is adjusted to The second ink material and / or the first substrate material to be printed is adjusted to the second substrate material to be printed; under the third sub-condition, the third sub-ink droplet parameter group printed by the inkjet printer is obtained; the third sub-condition is that the printing height, driving voltage and printing time are set to fixed values ​​and the first substrate material to be printed is used, the first ink material is adjusted to the second ink material and / or the first printing pinhole size is adjusted to the second printing pinhole size; the first ink droplet parameter group corresponding to the inkjet printing under the first condition is obtained, the first condition includes the first sub-condition, the second sub-condition and the third sub-condition, and the first ink droplet parameter group includes the first sub-ink droplet parameter group, the second sub-ink droplet parameter group and the third sub-ink droplet parameter group.

[0135] In one example, a first sub-printing parameter database is constructed based on a first condition and a first ink droplet parameter group; specifically, the database includes: establishing a first correspondence between the first sub-condition and the first sub-ink droplet parameter group; establishing a second correspondence between the second sub-condition and the second sub-ink droplet parameter group; establishing a third correspondence between the third sub-condition and the third sub-ink droplet parameter group; and constructing the first correspondence, the second correspondence, and the third correspondence into a first sub-printing parameter database.

[0136] In one example, obtaining a second ink droplet parameter group corresponding to printing by an inkjet printer under a second condition specifically includes: obtaining a fourth sub-ink droplet parameter group printed by the inkjet printer under a fourth sub-condition; the fourth sub-condition is that the ink material, the printing pinhole size, and the substrate material to be printed remain unchanged, and the printing height is a constant value, and the first driving voltage is adjusted to the second driving voltage and / or the first printing time is adjusted to the second printing time in a preset unit; under a fifth sub-condition, obtaining a fifth sub-ink droplet parameter group printed by the inkjet printer; the fifth sub-condition is that the ink material, the printing pinhole size, and the substrate material to be printed remain unchanged, and the driving voltage is a constant value, and the first printing height is adjusted to the second printing time in a preset unit. Adjust to the second printing height and / or adjust the first printing time to the second printing time; under the sixth sub-condition, obtain the sixth sub-ink droplet parameter group printed by the inkjet printer; the sixth sub-condition is that the ink material, the printing pinhole size and the substrate material to be printed remain unchanged, and the printing time is a constant value, and the first driving voltage is adjusted to the second driving voltage and / or the first printing height is adjusted to the second printing height in preset units; obtain the second ink droplet parameter group printed by the corresponding inkjet printer under the second condition; the second condition includes the fourth sub-condition, the fifth sub-condition and the sixth sub-condition, and the second ink droplet parameter group includes the fourth sub-ink droplet parameter group, the fifth sub-ink droplet parameter group and the sixth sub-ink droplet parameter group.

[0137] In one example, a second sub-printing parameter database is constructed based on the second condition and the second ink droplet parameter group; specifically, the following steps are included: establishing a fourth correspondence between the fourth sub-condition and the fourth sub-ink droplet parameter group; establishing a fifth correspondence between the fifth sub-condition and the fifth sub-ink droplet parameter group; establishing a sixth correspondence between the sixth sub-condition and the sixth sub-ink droplet parameter group; and constructing the fourth correspondence, the fifth correspondence, and the sixth correspondence into a second sub-printing parameter database.

[0138] In one example, the preset unit includes a preset first unit and a preset second unit; the printing parameters are first adjusted using the preset first unit, and then the printing parameters are adjusted using the preset second unit; wherein the printing parameter spacing adjusted by the preset second unit is smaller than the printing parameter spacing adjusted by the preset first unit.

[0139] In one example, a printing operation is performed with target printing parameters; this can be performed by the following operations: a trial printing is performed in a debugging area of ​​a substrate with the target printing parameters to obtain ink droplet parameters for the trial printing; if the difference between the ink droplet parameters for the trial printing and the ink droplet parameters for the to-be-printed printing is not within a preset range, any one or two of the target printing parameters are adjusted with preset sub-units to obtain adjusted target printing parameters, wherein the adjusted target printing parameters make the difference between the ink droplet parameters for the trial printing and the ink droplet parameters for the to-be-printed printing within a preset range; wherein the spacing of the printing parameters adjusted with the preset sub-units is smaller than the spacing of the printing parameters adjusted with the preset units; and a printing operation is performed in a formal printing area of ​​the substrate with the adjusted target printing parameters.

[0140] In one example, the ink droplet parameters to be printed in this specification include any one of the following: the sub-pixel area of ​​the substrate to be repaired, and the corresponding ink droplet parameters to be printed; the sub-pixel area of ​​the substrate debugging area, and the corresponding ink droplet parameters to be printed; the sub-pixel area of ​​the substrate formal printing area, and the corresponding ink droplet parameters to be printed.

[0141] In one example, constructing a preset first printing parameter database specifically includes: obtaining a third ink drop parameter group corresponding to printing by an inkjet printer under a third condition, wherein the third condition is to adjust any one or two environments in the printing environment in a preset manner, and to adjust any one or two parameters in the printing parameters with a preset third unit; constructing a preset first printing parameter database based on the third condition and the third ink drop parameter group.

[0142] In one example, a second printing parameter database corresponding to the current printing environment is confirmed from a preset first printing parameter database; specifically, the method includes: selecting a printing parameter group that matches the current printing environment from the preset first printing parameter database; obtaining a fourth ink drop parameter group corresponding to the inkjet printer printed under a fourth condition, wherein the fourth condition is to adjust any one or two parameters in the printing parameter group with a preset fourth unit; constructing a second printing parameter database based on the fourth condition and the fourth ink drop parameter group; wherein the printing parameter spacing adjusted by the fourth unit is smaller than the printing parameter spacing adjusted by the third unit.

[0143] In one example, querying the target printing parameters corresponding to the ink droplet parameters from the second printing parameter database includes: selecting a first ink droplet diameter D1 and a second ink droplet diameter D2 close to the ink droplet diameter D0 to be printed from the second printing parameter database; wherein D1≤D0≤D2; obtaining a printing parameter group (x 11 、x 12 、x 13 ...) and the printing parameter group corresponding to the second ink droplet diameter (x 21 、x 22 、x 23...);where x ij is the jth printing parameter corresponding to the i-th ink droplet diameter; the target printing parameter (x 01 、x 02 、x 03 , ...); among which, the preset method is:

[0144]

[0145] It should be noted that the above embodiments provide devices that implement their functions using only the division of the above functional modules as examples. In actual applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above. In addition, the device and method embodiments provided in the above embodiments are based on the same concept. The specific implementation process is detailed in the method embodiment and will not be repeated here.

[0146] The specification also discloses a computer-readable storage medium, which stores instructions. When the instructions are executed, any of the above methods is executed.

[0147] This embodiment also discloses an electronic device, which may be an inkjet printer or other electronic devices. Figure 6 The electronic device may include: at least one processor 601 , at least one communication bus 602 , a display 603 , a network interface 604 , and at least one memory 605 .

[0148] The communication bus 602 is used to implement the connection and communication between these components.

[0149] The display 603 may include a display screen (Display) and a camera (Camera).

[0150] The network interface 604 may optionally include a standard wired interface or a wireless interface (such as a WI-FI interface).

[0151] The processor 601 may include one or more processing cores. The processor 601 utilizes various interfaces and circuits to connect various components within the server. It executes instructions, programs, code sets, or instruction sets stored in the memory 605, as well as accesses data stored in the memory 605, to perform various server functions and process data. Optionally, the processor 601 may be implemented using at least one hardware form selected from the group consisting of a digital signal processing (DSP), a field-programmable gate array (FPGA), and a programmable logic array (PLA). The processor 601 may integrate one or a combination of a central processing unit (CPU), a graphics processing unit (GPU), and a modem. The CPU primarily processes the operating system, user interface, and application programs; the GPU is responsible for rendering and drawing the content displayed on the display; and the modem handles wireless communications. It is understood that the modem may not be integrated into the processor 601 and may be implemented as a separate chip.

[0152] Among them, the memory 605 may include a random access memory 605 (Random Access Memory, RAM), and may also include a read-only memory 605 (Read-Only Memory). Optionally, the memory 605 includes a non-transitory computer-readable storage medium. The memory 605 can be used to store instructions, programs, codes, code sets or instruction sets. The memory 605 may include a program storage area and a data storage area, wherein the program storage area may store instructions for implementing an operating system, instructions for at least one function (such as a touch function, a sound playback function, an image playback function, etc.), instructions for implementing the above-mentioned various method embodiments, etc.; the data storage area may store data involved in the above-mentioned various method embodiments, etc. The memory 605 may also be at least one storage device located away from the aforementioned processor 601. As shown in the figure, the memory 605 as a computer storage medium may include an operating system, a network communication module, a display module, and an application program for a method for calculating engineering construction costs.

[0153] exist Figure 6In the electronic device shown, the display 603 is mainly used to provide an input interface for the user and obtain data input by the user; and the processor 601 can be used to call the application stored in the memory 605. When executed by one or more processors 601, the electronic device executes one or more methods in the above embodiments.

[0154] It should be noted that for the aforementioned method embodiments, for simplicity of description, they are all expressed as a series of action combinations, but those skilled in the art should be aware that this application is not limited by the order of the actions described, because according to this application, certain steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required for this application.

[0155] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0156] In the several embodiments provided in this application, it should be understood that the disclosed devices can be implemented in other ways. For example, the device embodiments described above are merely schematic, such as the division of units, which is only a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some service interface, and the indirect coupling or communication connection of devices or units can be electrical or other forms.

[0157] Units described as separate components may or may not be physically separate, and components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0158] In addition, the functional units in the various embodiments of the present application may be integrated into a single processing unit, or each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0159] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable memory 605. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a memory 605 and includes several instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the steps of the various embodiments of the present application. The aforementioned memory 605 includes various media that can store program code, such as a USB flash drive, a mobile hard drive, a magnetic disk, or an optical disk.

[0160] The above is only an exemplary embodiment of the present disclosure and cannot be used to limit the scope of the present disclosure. That is, any equivalent changes and modifications made according to the teachings of the present disclosure are still within the scope of the present disclosure. After considering the disclosure of the specification and the truth of practice, those skilled in the art will easily think of other embodiments of the present disclosure. This application is intended to cover any variation, use or adaptive change of the present disclosure, which follows the general principles of the present disclosure and includes common knowledge or customary technical means in the art that are not recorded in the present disclosure. The description and examples are to be regarded as exemplary only, and the scope and spirit of the present disclosure are defined by the claims.

Claims

1. A method for adjusting printing parameters in electrofluidic printing, characterized in that: The printing parameter adjustment method includes: Obtaining a current printing environment, wherein the printing environment includes ink material of the inkjet printer, printing pinhole size, and substrate material to be printed; Confirming a second printing parameter database corresponding to the current printing environment from a preset first printing parameter database; the first printing parameter database includes a correspondence between the printing environment and the second printing parameter database; Obtaining ink droplet parameters to be printed, wherein the ink droplet parameters include ink droplet diameter; querying a second printing parameter database for target printing parameters corresponding to the ink droplet parameters; the target printing parameters include a printing height, a driving voltage, and a printing time; the driving voltage is a voltage value corresponding to a nozzle in the inkjet printer ejecting an ink droplet, and the printing time is a duration for the nozzle to eject an ink droplet once; A printing operation is performed with the target printing parameters.

2. The printing parameter adjustment method according to claim 1, characterized in that: Confirming a second printing parameter database corresponding to the current printing environment from a preset first printing parameter database; before that, the method further includes constructing the preset first printing parameter database, and constructing the preset first printing parameter database specifically includes: Obtaining a third ink drop parameter set corresponding to printing by the inkjet printer under a third condition, wherein the third condition is adjusting any one or two of the printing environments in a preset manner and adjusting any one or two of the printing parameters in a preset third unit; The preset first printing parameter database is constructed according to the third condition and the third ink drop parameter group.

3. The printing parameter adjustment method according to claim 2, characterized in that: Confirming a second printing parameter database corresponding to the current printing environment from a preset first printing parameter database; specifically comprising: Selecting a printing parameter group that matches the current printing environment from the preset first printing parameter database; Obtaining a fourth ink droplet parameter group corresponding to printing by the inkjet printer under a fourth condition, wherein the fourth condition is adjusting any one or two parameters in the printing parameter group by a preset fourth unit; The second printing parameter database is constructed according to the fourth condition and the fourth ink drop parameter group; wherein the printing parameter spacing adjusted by the fourth unit is smaller than the printing parameter spacing adjusted by the third unit.

4. The printing parameter adjustment method according to claim 1, wherein: Confirming a second printing parameter database corresponding to the current printing environment from a preset first printing parameter database; before that, the method further includes constructing the preset first printing parameter database, and constructing the preset first printing parameter database specifically includes: Obtaining a first ink drop parameter set corresponding to printing by the inkjet printer under a first condition, wherein the first condition is adjusting any one or two of the printing environments in a preset manner, while the printing parameters remain unchanged; Constructing a first sub-printing parameter database according to the first condition and the first ink drop parameter group; Obtaining a second ink drop parameter set corresponding to printing by the inkjet printer under a second condition, wherein the second condition is adjusting any one or two of the printing parameters by a preset unit, while the printing environment remains unchanged; constructing a second sub-printing parameter database according to the second condition and the second ink drop parameter group; The first printing parameter database is constructed, wherein the first printing parameter database includes the first sub-printing parameter database and the second sub-printing parameter database.

5. The printing parameter adjustment method according to claim 4, characterized in that: The obtaining of the first ink drop parameter group corresponding to printing by the inkjet printer under the first condition specifically includes: Under a first sub-condition, a first sub-droplet parameter set for printing by the inkjet printer is obtained; the first sub-condition is that the printing height, the driving voltage, and the printing time are set to fixed values, a first ink material is used, the first printing pinhole size is adjusted to a second printing pinhole size, and / or the first substrate material to be printed is adjusted to a second substrate material to be printed; Under the second sub-condition, a second sub-droplet parameter set for printing by the inkjet printer is obtained; the second sub-condition is that the printing height, the driving voltage, and the printing time are set to fixed values, the first printing pinhole size is used, the first ink material is adjusted to the second ink material, and / or the first substrate material to be printed is adjusted to the second substrate material to be printed; Under the third sub-condition, a third sub-ink droplet parameter set for printing by the inkjet printer is obtained; the third sub-condition is that the printing height, the driving voltage, and the printing time are set to fixed values, the first substrate material to be printed is used, the first ink material is adjusted to the second ink material, and / or the first printing pinhole size is adjusted to the second printing pinhole size; Obtain a first ink droplet parameter group corresponding to inkjet printing under the first condition, wherein the first condition includes the first sub-condition, the second sub-condition, and the third sub-condition, and the first ink droplet parameter group includes the first sub-ink droplet parameter group, the second sub-ink droplet parameter group, and the third sub-ink droplet parameter group.

6. The printing parameter adjustment method according to claim 4, characterized in that: The obtaining of the second ink drop parameter group corresponding to printing by the inkjet printer under the second condition specifically includes: Under a fourth sub-condition, a fourth sub-droplet parameter set for printing by the inkjet printer is obtained; the fourth sub-condition is that the ink material, the printing pinhole size, and the substrate material to be printed remain unchanged, the printing height is a constant value, and the first driving voltage is adjusted to the second driving voltage and / or the first printing time is adjusted to the second printing time in preset units; Under a fifth sub-condition, a fifth sub-droplet parameter set for printing by the inkjet printer is obtained; the fifth sub-condition is that the ink material, the printing pinhole size, and the substrate material to be printed remain unchanged, the driving voltage is a constant value, and the first printing height is adjusted to a second printing height and / or the first printing time is adjusted to a second printing time in preset units; Under a sixth sub-condition, a sixth sub-droplet parameter set for printing by the inkjet printer is obtained; the sixth sub-condition is that the ink material, the printing pinhole size, and the substrate material to be printed remain unchanged, the printing time is a constant value, and the first driving voltage is adjusted to the second driving voltage and / or the first printing height is adjusted to the second printing height in preset units; Obtain a second ink droplet parameter group corresponding to printing by the inkjet printer under the second condition; the second condition includes the fourth sub-condition, the fifth sub-condition and the sixth sub-condition, and the second ink droplet parameter group includes the fourth sub-ink droplet parameter group, the fifth sub-ink droplet parameter group and the sixth sub-ink droplet parameter group.

7. The printing parameter adjustment method according to claim 6, characterized in that: The preset units include a preset first unit and a preset second unit; the printing parameters are adjusted using the preset first unit first, and then the printing parameters are adjusted using the preset second unit; wherein, The printing parameter spacing adjusted by the preset second unit is smaller than the printing parameter spacing adjusted by the preset first unit.

8. The printing parameter adjustment method according to any one of claims 4 to 7, characterized in that: Executing a printing operation with the target printing parameters, specifically including: Perform a trial print in the debugging area of ​​the substrate with the target printing parameters to obtain ink drop parameters for the trial print; If the difference between the ink droplet parameters of the trial print and the ink droplet parameters to be printed is not within a preset range, adjusting any one or two of the target printing parameters by a preset sub-unit to obtain adjusted target printing parameters, wherein the adjusted target printing parameters ensure that the difference between the ink droplet parameters of the trial print and the ink droplet parameters to be printed is within a preset range; wherein the spacing of the printing parameters adjusted by the preset sub-unit is smaller than the spacing of the printing parameters adjusted by the preset unit; In the main printing area of ​​the substrate, a printing operation is performed using the adjusted target printing parameters.

9. The printing parameter adjustment method according to any one of claims 1 to 7, characterized in that: querying a second printing parameter database for target printing parameters corresponding to the ink droplet parameters; Specifically include: Selecting a first ink droplet diameter D1 and a second ink droplet diameter D2 close to the ink droplet diameter D0 to be printed from the second printing parameter database; wherein D1≤D0≤D2; Obtain the printing parameter group (x) corresponding to the first ink droplet diameter from the second printing parameter database. 11 、x 12 、x 13 ...) and the printing parameter group corresponding to the second ink droplet diameter (x 21 、x 22 、x 23 ...);where x ij is the jth printing parameter corresponding to the i-th ink droplet diameter; The target printing parameter (x) corresponding to the ink droplet diameter to be printed is obtained by a preset method. 01 、x 02 、x 03 , ...); wherein the preset method is:

10. An inkjet printer, characterized in that: The inkjet printer includes a processor, a memory, a display, and a network interface. The memory is used to store instructions. The display and the network interface are both used to communicate with other devices. The processor is used to execute the instructions stored in the memory to enable the inkjet printer to perform the following operations: Obtaining a current printing environment, wherein the printing environment includes ink material of the inkjet printer, printing pinhole size, and substrate material to be printed; Confirming a second printing parameter database corresponding to the current printing environment from a preset first printing parameter database; the first printing parameter database includes a correspondence between the printing environment and the second printing parameter database; Obtaining ink droplet parameters to be printed, wherein the ink droplet parameters include ink droplet diameter; querying a second printing parameter database for target printing parameters corresponding to the ink droplet parameters; The target printing parameters include printing height, driving voltage and printing time; The driving voltage is the voltage value corresponding to the ejection of ink droplets by the nozzle in the inkjet printer, and the printing time is the duration of the nozzle ejecting an ink droplet once; The printing operation is performed with the target printing parameters.

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