Ink-jet printer and ink-jet control method and control terminal thereof
By adjusting the sorting of charged ink droplets and filling them with uncharged ink droplets in the inkjet printer, and generating a table of converted codes and charging voltage values, the printing quality problem caused by the expansion of the spacing between charged ink droplets under high-frequency printing was solved, achieving high-quality and fast printing.
Patent Information
- Application Number
- CN202511827379.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-04
- Publication Date
- 2026-02-03
AI Technical Summary
In inkjet printers, the high-frequency printing of charged ink droplets causes like-pair repulsion, affecting printing quality. In particular, the spacing between charged ink droplets increases at high oscillation frequencies, resulting in poor printing effects.
By constructing an inkjet control method, adjusting the sorting of charged ink droplets and filling of uncharged ink droplets, generating a converted code and a charging voltage value table, and controlling the charging of charged ink droplets, the printing effect is optimized.
Achieve rapid printing while ensuring printing quality, thereby improving user experience.
Smart Images
Figure CN121448024A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of inkjet printer technology, and in particular to an inkjet printer, its inkjet control method, and control terminal. Background Technology
[0002] As the manufacturing industry continues to move towards higher efficiency, automation, and intelligence in production, testing, labeling, and traceability, more and more niche industries require smaller characters or patterns for product labeling, as well as higher printing resolution and faster printing speeds. Micro-character inkjet printers utilize piezoelectric crystal oscillators with oscillation frequencies as high as 120kHz to achieve faster printing settings, which means a higher charging frequency for the ink droplets. However, faster printing speeds mean longer printing time intervals between ink droplets. Since charged droplets carry the same polarity charge, they repel each other during flight, leading to increased distance between droplets and consequently affecting printing quality. Summary of the Invention
[0003] The technical problem to be solved by the present invention is to provide an inkjet printer, its inkjet control method and control terminal.
[0004] The technical solution adopted by this invention to solve its technical problem is: constructing an inkjet control method for a coding machine, comprising the following steps: Obtain column dot matrix data of the character to be printed; wherein, the column dot matrix data includes multiple column codes for controlling the row position of each charged ink droplet and each uncharged ink droplet in each column of the character to be printed; Each column code is converted to obtain a converted code and a charging voltage value table that correspond one-to-one with each column code; wherein, the converted code is obtained by adjusting the order of each non-charging ink droplet and each charging ink droplet in the column code and / or filling the column code with non-charging ink droplets; The charging ink droplets are controlled to charge according to the processed column code corresponding to each column code and the charging voltage value table.
[0005] Preferably, the conversion process for each column encoding includes: The column codes are converted using a lookup table method and a pre-stored protection point table to obtain the converted codes and the charging voltage value table; wherein, the protection point table includes multiple converted codes, column codes corresponding one-to-one with each converted code, and charging voltage value tables corresponding one-to-one with each converted code.
[0006] Preferably, the step of determining the protection point table includes: Acquire test data; wherein the test data includes multiple test codes in different orders; For each test code in the test data, the following is performed: S01. Generate a code to be verified and voltage data to be verified based on the test code; S02. Control the charging ink droplets to charge and print according to the code to be verified and the voltage data to be verified; S03. Observe the printing effect diagram after the charging ink droplets are printed, and determine whether the distance between each charging ink droplet and its adjacent charging ink droplets in the printing effect diagram is within the set distance range. When the distance between all charging ink droplets and their adjacent charging ink droplets in the printing effect diagram is within the set distance range, execute S04. When there are charging ink droplets and their adjacent charging ink droplets in the printing effect diagram whose distance is not within the set distance range, execute S05. S04. Generate the converted code and charging voltage value table of the test code based on the code to be verified and the voltage data to be verified; S05. Adjust the charging voltage of the charging ink droplet corresponding to the ink dot, and / or fill the space between two charging ink droplets whose spacing is not within the set distance range with an uncharged ink droplet; S06. Update the voltage data to be verified according to the adjusted charging voltage, and update the code to be verified according to the filling status of the uncharged ink droplets, and then return to S02.
[0007] Preferably, step S05 further includes: preferentially adjusting the charging voltage of the charging droplet corresponding to the corresponding ink dot, and after each adjustment, determining that the adjusted charging voltage is within the set voltage range. If so, it is not allowed to fill the space between the charging ink droplet and its adjacent charging ink droplet with uncharged ink droplets; otherwise, the adjusted charging voltage is restored to the charging voltage before adjustment, and the space between the charging ink droplet and its adjacent charging ink droplet is filled with uncharged ink droplets.
[0008] Preferably, adjusting the charging voltage of the charging ink droplet corresponding to the ink dot includes: When the distance between the charging ink droplet and its adjacent charging ink droplet is less than the lower limit of the set distance range, the charging voltage of the charging ink droplet and / or the adjacent charging ink droplet is increased. When the distance between a certain charging ink droplet and the adjacent charging ink droplet is greater than the upper limit of the set distance range, the charging voltage of the charging ink droplet and / or the adjacent charging ink droplet is reduced.
[0009] Preferably, filling the space between two charged ink droplets whose spacing is not within the set distance range with an uncharged ink droplet includes: Determine whether the end of the code to be verified is a non-charged ink droplet. If so, transfer the non-charged ink droplet at the end to the space between two charged ink droplets whose spacing is not within the set distance range. Otherwise, fill the space between the two charged ink droplets whose spacing is not within the set distance range with a new non-charged ink droplet.
[0010] Preferably, in S03, it further includes: The printing effect image is captured by a camera; The printing effect image is analyzed using image analysis methods to determine the spacing between every two adjacent charged ink droplets.
[0011] Preferably, during the process of controlling the charging of the charging ink droplets according to the processed column codes corresponding to each column code and the charging voltage value table, the charging frequency range of the charging ink droplets is 100KHz to 140KHz.
[0012] Furthermore, the present invention also constructs a control terminal, which includes a memory, a processor, and a computer program stored in the processor and running on the processor, wherein the processor implements the inkjet control method of the inkjet printer described above when executing the computer program.
[0013] In addition, the present invention also provides an inkjet printer, including the control terminal described above.
[0014] The technical solution of this invention can achieve rapid printing by controlling the inkjet printer while ensuring printing quality, thereby improving the user experience. Attached Figure Description
[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings: Figure 1 This is a flowchart of the inkjet control method for a coding machine in some embodiments of the present invention; Figure 2 This is a schematic diagram of column dot matrix data in some embodiments of the present invention; Figure 3 This is a schematic diagram of column coding filled with uncharged ink droplets in some embodiments of the present invention; Figure 4 This is a circuit structure block diagram of the control terminal in some embodiments of the present invention. Detailed Implementation
[0016] To provide a clearer understanding of the technical features, objectives, and effects of the present invention, specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings.
[0017] It should be noted that the flowcharts shown in the accompanying drawings are merely illustrative and do not necessarily include all content and operations / steps, nor do they necessarily have to be performed in the described order. For example, some operations / steps can be broken down, while others can be combined or partially combined; therefore, the actual execution order may change depending on the specific circumstances.
[0018] The block diagrams shown in the accompanying drawings are merely functional entities and do not necessarily correspond to physically independent entities. That is, these functional entities can be implemented in software, in one or more hardware modules or integrated circuits, or in different network and / or processor devices and / or microcontroller devices.
[0019] Figure 1 This is a flowchart illustrating the inkjet control method for a coding machine in some embodiments of the present invention. This inkjet control method can achieve rapid printing while ensuring printing quality, thereby improving the user experience.
[0020] like Figure 1 As shown, the inkjet control method may include steps S10, S20 and S30.
[0021] Step S10 includes: acquiring column dot matrix data of the characters to be printed; wherein the column dot matrix data includes multiple column codes for controlling the row position of each charged ink droplet and each uncharged ink droplet in each column of the characters to be printed.
[0022] In this step, each column of dot matrix data can display a complete character, and column dot matrix data can be constructed from multiple columns of binary code. Figure 2 Taking the character "7" as an example, the binary codes of columns 1 to 5 of the dot matrix data for this character "7" can be represented as follows: 1000000, 100011, 1001000, 1010000, 1100000. A binary code of "1" indicates a charging ink droplet, and a binary code of "0" indicates an uncharging ink droplet. Each binary code value from right to left represents the charging status of the ink droplets in rows 1 to 7. For example, "1000000" indicates that the ink droplets in row 7 are charging, and the ink droplets in rows 1 to 6 are uncharging. It should be noted that charging ink droplets are those that require charging and will be printed onto the target; while uncharging ink droplets are those that do not require charging and will flow back to the ink reservoir through the recycling tank in the inkjet printer, and will not be printed onto the target. The principles of rechargeable ink droplet printing and non-rechargeable ink droplet recycling can be found in existing CIJ continuous inkjet printers, and will not be elaborated here.
[0023] Step S20 includes: performing conversion processing on each column code to obtain a converted code and a charging voltage value table that correspond one-to-one with each column code; wherein, the converted code is a code obtained by adjusting the order of each non-charging ink droplet and each charging ink droplet in the column code and / or filling the column code with non-charging ink droplets.
[0024] The purpose of the converted encoding is to rearrange the binary codes in the column encoding according to preset rules and requirements. This rearrangement includes adjusting the order of the original column encoding and / or filling the original column encoding with new uncharged ink droplets. This increases the printing time interval between two adjacent charged ink droplets, thereby reducing the adverse effects of like-pair repulsion. The charging voltage value table is used to set the charging voltage for each charged ink droplet in the converted encoding, ensuring that excessive charging voltage between adjacent charged ink droplets does not cause excessive like-pair repulsion, thus affecting printing quality.
[0025] Understandably, this step, by converting the column code, can improve the printing quality of the column code.
[0026] In some embodiments, each column code can be converted in the following way: the column code is converted based on a lookup table and a pre-stored protection point table to obtain the converted code and a charging voltage value table; wherein, the protection point table includes multiple converted codes, column codes corresponding one-to-one with each converted code, and a charging voltage value table corresponding one-to-one with each converted code.
[0027] In this embodiment, the column code can be used as input to look up the corresponding converted code and charging voltage value table in the protection point table, thereby obtaining the converted code and charging voltage value table. Understandably, the table lookup method has advantages such as stable and accurate output, high speed, ease of implementation, and ease of adjustment, which helps reduce processor computation and save power consumption.
[0028] In some embodiments, the protection point table can be determined by performing the following steps: acquiring test data; performing steps S01 to S06 for each test code in the test data; wherein the test data includes multiple test codes in different orders. Further, the test data may include all sorted test codes; for example, a 7-bit column code may correspond to 128 (2... 7 Test codes with different sortings.
[0029] Step S01 includes: generating a code to be verified and voltage data to be verified based on the test code.
[0030] In this step, the test code can be set as the code to be verified first, and then the charging voltage of each charging droplet in the code to be verified can be determined based on the existing algorithm. Alternatively, the charging voltage of each charging droplet in the code to be verified can be calculated according to a preset linear function, which can be expressed as: U(i) = a*i + b, where U(i) represents the charging voltage of the i-th row of charging droplets, i represents the row number of the charging droplets, a represents the preset slope, and b represents the preset intercept.
[0031] Step S02 includes: controlling the charging ink droplets to charge and printing according to the code to be verified and the voltage data to be verified.
[0032] In this step, the positions of all charged ink droplets in the same column can be determined by the code to be verified. The voltage data to be verified contains the charging voltage corresponding to each charged ink droplet. Then, by controlling the charging tank of the inkjet printer to work, the corresponding ink droplets are charged with the corresponding charging voltage. Then, each charged ink droplet is ejected through the nozzle. Under the action of the high voltage electric field, the charged ink droplets fly according to the amount of charge they carry (the larger the charging voltage, the larger the charge they carry, and the larger the deflection angle (i.e., the farther the flight distance)), so that they land at different positions on the target to achieve printing.
[0033] It should be noted that in the field of inkjet printer technology, charging the corresponding ink droplet to achieve printing under the condition of determining the position and charging voltage of the charging ink droplet is a mature technology. Therefore, please refer to the existing technology for the specific principle of controlling the charging ink droplet to achieve printing, which will not be elaborated here.
[0034] Step S03 includes: observing the printing effect image after the charging ink droplets are printed, and determining whether the distance between each charging ink droplet and its adjacent charging ink droplets in the printing effect image is within the set distance range. When the distance between all charging ink droplets and their adjacent charging ink droplets in the printing effect image is within the set distance range, step S04 is executed. When there are charging ink droplets in the printing effect image whose distance is not within the set distance range, step S05 is executed.
[0035] In this step, when a charged ink droplet is tangent to or nearly tangent to its adjacent charged ink droplet, the printing effect is good. If a charged ink droplet does not contact or overlaps with its adjacent charged ink droplet, the printing effect is poor. Therefore, the printing quality can be determined by judging whether the distance between the charged ink droplet and its adjacent charged ink droplet is within the set distance range. When the distance between all charged ink droplets and their adjacent charged ink droplets in the printing effect image is within the set distance range, the printing quality is qualified.
[0036] Furthermore, in some embodiments, in step S03, the spacing between two adjacent charging ink droplets can be determined by: acquiring a printing effect image using a camera (preferably a high-speed camera); and analyzing the printing effect image using an image analysis method to determine the spacing between each pair of adjacent charging ink droplets.
[0037] Specifically, since each charged ink droplet can be considered as a dot with a similar radius after printing, the distance between a charged ink droplet and its adjacent charged ink droplets can be calculated as follows: Since the ink droplets are different in color from the printed target, existing image extraction methods can be used to extract an ink dot image containing only ink droplets from the printed effect image, with the circle as the target; then, based on the circle (or near-circle) as the target, existing image recognition algorithms identify each ink droplet in the ink dot image and calculate the diameter of each ink droplet and the center-to-center distance between each adjacent ink droplet, obtaining multiple diameters and multiple center-to-center distances; next, the average value of all diameters is calculated to obtain the average diameter; finally, the difference between each center-to-center distance and the average diameter is obtained to obtain the distance between each charged ink droplet and its adjacent charged ink droplets.
[0038] It should be noted that the adjacent charged ink droplets of a given charged ink droplet refer to the ink droplets whose positions are adjacent after all non-charged ink droplets have been removed from the column encoding or conversion encoding. Figure 2 Taking the third column encoding as an example, the adjacent charged ink droplets of the third row include the charged ink droplets of the second and seventh rows. In addition, the distance range can be set according to the printing quality requirements. The upper and lower limits of the distance range are positive and negative numbers, respectively. The closer the upper and lower limits are to 0, the higher the printing quality requirements.
[0039] Step S04 includes: generating a table of converted test codes and charging voltage values based on the code to be verified and the voltage data to be verified.
[0040] When the distance between all charged ink droplets and their adjacent charged ink droplets in the printing effect diagram is within the set distance range, it indicates that the printing quality meets the requirements. Therefore, the process proceeds to step S04, whereby the current code to be verified is determined as the converted code of the test code, and the current voltage data to be verified is used to generate a charging voltage value table for the test code.
[0041] Step S05 includes: adjusting the charging voltage of the charging droplet corresponding to the corresponding charging ink dot, and / or filling the space between two charging ink drops whose spacing is not within the set distance range with an uncharged ink droplet.
[0042] In some embodiments, step S05 may further include: preferentially adjusting the charging voltage of the charging droplet corresponding to the corresponding ink dot, and after each adjustment, determining that the adjusted charging voltage is within the set voltage range. If so, it is not allowed to fill the space between the charging droplet and its adjacent charging droplet with uncharged ink droplets; otherwise, the adjusted charging voltage is restored to the charging voltage before adjustment, and the space between the charging droplet and its adjacent charging droplet with uncharged ink droplets is filled.
[0043] Since filling uncharged ink droplets increases the charging time required for the entire column of ink droplets, this embodiment prioritizes improving printing quality by adjusting the charging voltage of each charged ink droplet. Only when adjusting the charging voltage cannot improve the printing effect will uncharged ink droplets be filled between charged ink droplets and their adjacent charged ink droplets, thereby further improving the printing effect and helping to increase printing speed.
[0044] In some embodiments, the step of adjusting the charging voltage of the charging droplet corresponding to the corresponding ink dot may include: increasing the charging voltage of the charging droplet and / or the adjacent charging droplet when the distance between the charging droplet and its adjacent charging droplet is less than the lower limit of a set distance range; and decreasing the charging voltage of the charging droplet and / or the adjacent charging droplet when the distance between the charging droplet and its adjacent charging droplet is greater than the upper limit of a set distance range.
[0045] Understandably, increasing the charging voltage of the charging droplet and / or adjacent charging droplets increases the mutual repulsion between them, thus increasing the spacing. Conversely, decreasing the charging voltage of the charging droplet and / or adjacent charging droplets decreases the mutual repulsion, thus decreasing the spacing.
[0046] Since the first ejected charging ink droplet may affect the subsequent ejected charging ink droplets, in order to improve the efficiency of the protection point table determination, in some embodiments, when adjusting the charging voltage of the charging ink droplets, it is preferable to adjust the charging voltage of the charging ink droplets with larger row numbers, and try to keep the charging voltage of the charging ink droplets with smaller row numbers.
[0047] In some embodiments, the step of filling the space between two charged ink droplets whose spacing is not within a set distance range with a non-charged ink droplet may include: determining whether the end of the code to be verified is a non-charged ink droplet; if so, transferring the non-charged ink droplet located at the end to the space between two charged ink droplets whose spacing is not within a set distance range; otherwise, filling the space between two charged ink droplets whose spacing is not within a set distance range with a new non-charged ink droplet.
[0048] by Figure 2Taking column 5 as an example, there are no uncharged ink droplets between the charged ink droplets in rows 6 and 7, while rows 1 to 5 are all uncharged ink droplets. If the analysis of the printing effect diagram shows that the charged ink droplets in rows 6 and 7 are indirectly less than the lower limit of the set distance range after printing, then the uncharged ink droplets in rows 1 to 5 can be effectively transferred to the space between rows 6 and 7, thereby increasing the time interval between the ejection of the two charged ink droplets and thus increasing the spacing. In some embodiments, for Figure 2 After filling column 5 with uncharged ink droplets, see [link / reference]. Figure 3 As shown in the right image, this minimizes the increase in the total number of bits in the column code, which helps to improve printing speed.
[0049] Step S06 includes: updating the voltage data to be verified based on the adjusted charging voltage, and updating the code to be verified based on the filling status of the uncharged ink droplets, and then returning to S02.
[0050] Step S30 includes: controlling the charging ink droplets to charge according to the processed column code and charging voltage value table corresponding to each column code.
[0051] It should be noted that the subsequent work of controlling the nozzle and electric field after charging the ink droplet can be referred to the existing CIJ continuous inkjet printer, and will not be elaborated here.
[0052] In some embodiments, during the process of controlling the charging of the charging ink droplets according to the processed column codes and charging voltage value table corresponding to each column code, the charging frequency range of the charging ink droplets is 100KHz to 140KHz to ensure a faster printing speed.
[0053] The present invention also provides a control terminal, such as Figure 4 As shown, the control terminal may include a memory, a processor, and a computer program stored in the processor and running on the processor. When the processor executes the computer program, it implements the inkjet control method for the inkjet printer provided in this embodiment of the invention.
[0054] The present invention also provides an inkjet printer, including the control terminal provided in the embodiments of the present invention.
[0055] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.
[0056] Those skilled in the art will further recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both. To clearly illustrate the interchangeability of hardware and software, the components and steps of the various examples have been generally described in terms of functionality in the foregoing description. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementations should not be considered beyond the scope of this invention.
[0057] The steps of the methods or algorithms described in conjunction with the embodiments disclosed herein can be implemented directly by hardware, a software module executed by a processor, or a combination of both. The software module can be located in random access memory (RAM), main memory, read-only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium known in the art.
[0058] It is understood that the above embodiments only illustrate preferred embodiments of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can freely combine the above technical features without departing from the concept of the present invention, and can also make several modifications and improvements, all of which fall within the protection scope of the present invention. Therefore, all equivalent transformations and modifications made with respect to the scope of the claims of the present invention should fall within the scope of the claims of the present invention.
Claims
1. An inkjet control method for a coding machine, characterized in that, Includes the following steps: Obtain column dot matrix data of the character to be printed; wherein, the column dot matrix data includes multiple column codes for controlling the row position of each charged ink droplet and each uncharged ink droplet in each column of the character to be printed; Each column code is converted to obtain a converted code and a charging voltage value table that correspond one-to-one with each column code; wherein, the converted code is obtained by adjusting the order of each non-charging ink droplet and each charging ink droplet in the column code and / or filling the column code with non-charging ink droplets; The charging ink droplets are controlled to charge according to the processed column code corresponding to each column code and the charging voltage value table.
2. The inkjet control method for a coding machine according to claim 1, characterized in that, The conversion process for each column encoding includes: The column codes are converted using a lookup table method and a pre-stored protection point table to obtain the converted codes and the charging voltage value table; wherein, the protection point table includes multiple converted codes, column codes corresponding one-to-one with each converted code, and charging voltage value tables corresponding one-to-one with each converted code.
3. The inkjet control method for a coding machine according to claim 2, characterized in that, The steps for determining the protection point table include: Acquire test data; wherein the test data includes multiple test codes in different orders; For each test code in the test data, the following is performed: S01. Generate a code to be verified and voltage data to be verified based on the test code; S02. Control the charging ink droplets to charge and print according to the code to be verified and the voltage data to be verified; S03. Observe the printing effect diagram after the charging ink droplets are printed, and determine whether the distance between each charging ink droplet and its adjacent charging ink droplets in the printing effect diagram is within the set distance range. When the distance between all charging ink droplets and their adjacent charging ink droplets in the printing effect diagram is within the set distance range, execute S04. When there are charging ink droplets and their adjacent charging ink droplets in the printing effect diagram whose distance is not within the set distance range, execute S05. S04. Generate the converted code and charging voltage value table of the test code based on the code to be verified and the voltage data to be verified; S05. Adjust the charging voltage of the charging ink droplet corresponding to the ink dot, and / or fill the space between two charging ink droplets whose spacing is not within the set distance range with an uncharged ink droplet; S06. Update the voltage data to be verified according to the adjusted charging voltage, and update the code to be verified according to the filling status of the uncharged ink droplets, and then return to S02.
4. The inkjet control method for a coding machine according to claim 3, characterized in that, S05 further includes: preferentially adjusting the charging voltage of the charging droplet corresponding to the corresponding ink dot, and after each adjustment, determining that the adjusted charging voltage is within the set voltage range. If so, it is not allowed to fill the space between the charging ink droplet and its adjacent charging ink droplet with uncharged ink droplets; otherwise, the adjusted charging voltage is restored to the charging voltage before adjustment, and the space between the charging ink droplet and its adjacent charging ink droplet is filled with uncharged ink droplets.
5. The inkjet control method for a coding machine according to claim 3, characterized in that, The adjustment of the charging voltage of the charging ink droplet corresponding to the ink dot includes: When the distance between the charging ink droplet and its adjacent charging ink droplet is less than the lower limit of the set distance range, the charging voltage of the charging ink droplet and / or the adjacent charging ink droplet is increased. When the distance between a certain charging ink droplet and the adjacent charging ink droplet is greater than the upper limit of the set distance range, the charging voltage of the charging ink droplet and / or the adjacent charging ink droplet is reduced.
6. The inkjet control method for a coding machine according to claim 5, characterized in that, The process of filling a gap between two charged ink droplets whose spacing is not within the set distance range with an uncharged ink droplet includes: Determine whether the end of the code to be verified is a non-charged ink droplet. If so, transfer the non-charged ink droplet at the end to the space between two charged ink droplets whose spacing is not within the set distance range. Otherwise, fill the space between the two charged ink droplets whose spacing is not within the set distance range with a new non-charged ink droplet.
7. The inkjet control method for a coding machine according to claim 3, characterized in that, S03 also includes: The printing effect image is captured by a camera; The printing effect image is analyzed using image analysis methods to determine the spacing between every two adjacent charged ink droplets.
8. The inkjet control method for a coding machine according to any one of claims 1 to 6, characterized in that, During the process of controlling the charging of the charging ink droplets according to the processed column codes corresponding to each column code and the charging voltage value table, the charging frequency range of the charging ink droplets is 100KHz to 140KHz.
9. A control terminal comprising a memory, a processor, and a computer program stored in and running on the processor, characterized in that, When the processor executes the computer program, it implements the inkjet control method for the inkjet printer as described in any one of claims 1 to 8.
10. An inkjet printer, characterized in that, Includes the control terminal as described in claim 9.