Printing typesetting system and method based on online automatic typesetting design

Abstract

The invention discloses a printing and typesetting system and method based on online automatic typesetting design, and relates to the technical field of printing and typesetting. The technical key points of the scheme are as follows: measuring reflection factors of different printing areas before and after printing, and calculating to obtain an ink absorption index of printing paper; comparing the pixel value of the image of the paper sample before drying with the pixel value of the image of the paper sample after drying, calculating the diffusion index of ink, collecting a plurality of groups of pressure data, combining the diameter of a roller and the length of the roller, calculating to obtain printing pressure, and further calculating to obtain a printing pressure index; according to the method, the comprehensive printing performance index is obtained through calculation according to the ink absorption index of the printing paper, the diffusion index of the printing ink and the printing pressure index, the comprehensive printing performance index is compared with the printing performance threshold value, fonts and typesetting are correspondingly controlled according to the comparison result, and the unclear phenomenon caused by expansion of the printing ink is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of printing typesetting, and specifically provides a printing typesetting system and method based on online automatic typesetting design. Background Art

[0002] With the rapid development of digital and network technologies, the traditional printing typesetting method can no longer meet the modern high-efficiency and flexible design requirements. In recent years, with the continuous progress of cloud computing, big data, and artificial intelligence technologies, online automatic typesetting design technology has gradually emerged. This technology can use computer algorithms and intelligent analysis to quickly and accurately complete typesetting design tasks.

[0003] In a Chinese invention application with the publication number CN113177398A, an online automatic typesetting system and method based on the electronic newspaper format are disclosed. The automatic typesetting system includes a front-end web module for receiving typesetting requests, uploading typesetting editing parameters, and displaying typesetting styles; a back-end server module for extracting graphic and text content from each material file and being able to design typesetting using the FFD algorithm and the FirstFit algorithm, and executing typesetting jobs; a database module connected to the server through an API for storing typesetting template information; and the back-end server module is respectively connected to the front-end web module and the database module.

[0004] Combined with the above invention application, the prior art has the following deficiencies:

[0005] When performing automated typesetting design, the comprehensive consideration of key factors such as the ink absorption of paper, the diffusion of ink, and printing pressure is often ignored. This neglect has led to frequent quality problems in printed products, such as blurred and unclear text, and even missing strokes and broken lines caused by improper ink expansion, which has greatly affected the overall quality and visual effect of printed products. Summary of the Invention

[0006] (1) Technical Problem to be Solved

[0007] In view of the deficiencies of the prior art, the present invention provides a printing typesetting system and method based on online automatic typesetting design. By comprehensively considering the ink absorption of paper, the diffusion of ink, and printing pressure, the printing quality is ensured to always remain in the best state, thereby effectively avoiding the unclear phenomenon caused by ink expansion and solving the problems mentioned in the background art.

[0008] (2) Technical Solution

[0009] To achieve the above object, the present invention is realized through the following technical solutions: A printing typesetting system based on online automatic typesetting design, comprising:

[0010] The ink absorption analysis module uses a printing device to uniformly print ink on the printing paper at the same intervals and with the same area, measures the reflectance factors before and after printing in different printing areas, and calculates the ink absorption index of the printing paper;

[0011] The ink diffusion analysis module collects images of the paper samples before and after the ink is completely dried, performs binarization processing, obtains the pixel values of each pixel point in the paper sample image, compares the pixel values of the paper sample image before drying with those of the paper sample image after drying, and calculates the diffusion index of the ink;

[0012] The printing pressure analysis module collects several groups of pressure data, combines the drum diameter and the drum length, calculates the printing pressure, and calculates the printing pressure index through the printing pressure corresponding to each group of pressure data after dimensionless processing;

[0013] The font and layout control module calculates the comprehensive printing performance index through the ink absorption index of the printing paper, the diffusion index of the ink, and the printing pressure index, compares the comprehensive printing performance index with the printing performance threshold, and controls the font and layout accordingly according to the comparison result.

[0014] Furthermore, use a printing device to uniformly print ink on the printing paper at the same intervals and with the same area, ensure that the ink supply amount, printing speed, and printing pressure parameters for each printing are consistent, and let the ink stay on the printing paper for t minutes after printing, where t takes any value among 1, 2, 5, and 10, to ensure that the ink fully penetrates the paper.

[0015] Furthermore, obtain the reflectance factors before and after printing in each printing area, and calculate the ink absorption index of the printing paper. The calculation formula is as follows:

[0016]

[0017] Among them, Kn represents the ink absorption index of the printing paper, R0 i represents the reflectance factor before printing in the i-th printing area, RY i represents the reflectance factor after printing in the i-th printing area, i = 1, 2,..., N, and N is a positive integer.

[0018] Furthermore, before the ink is dried, use a high-resolution camera to capture an image of the printed paper sample. After the ink is completely dried, capture an image of the printed paper sample again, and perform binarization processing on the paper sample images before and after the ink is completely dried respectively.

[0019] Further, obtain the pixel values of each pixel point in the paper sample image, compare the pixel values of the paper sample image before drying and the pixel values of the paper sample image after drying, and calculate the ink diffusion index. The calculation formula is as follows:

[0020]

[0021] Among them, Is represents the ink diffusion index, and fx,y B represents the pixel value of the pixel point at the coordinate (x, y) of the paper sample image before drying, and fx,y A represents the pixel value of the pixel point at the coordinate (x, y) of the paper sample image after drying, where x = 1, 2, …, X, X is a positive integer, and y = 1, 2, …, Y, Y is a positive integer.

[0022] Further, calculate and obtain the printing pressure through the pressure between the drum end faces, the drum diameter, and the drum length. The calculation formula is as follows:

[0023]

[0024] Among them, P represents the printing pressure, F represents the pressure received by the drum contact surface, D represents the drum diameter, L represents the drum length, and K represents the compensation coefficient, where 0 < K < 2.

[0025] Further, obtain the printing pressure corresponding to each group of pressure data. After dimensionless processing, calculate and obtain the printing pressure index. The calculation formula is as follows:

[0026]

[0027] Among them, Pn represents the printing pressure index, and P j represents the printing pressure corresponding to the jth group of pressure data, where j = 1, 2, …, M, and M is a positive integer.

[0028] Further, through the ink absorption index of the printed paper, the ink diffusion index, and the printing pressure index, after linear normalization processing, calculate and obtain the comprehensive printing performance index. The calculation formula is as follows:

[0029] CPI = ω 1 *Kn + ω 2 *Is + ω 3 *Pn

[0030] Among them, CPI represents the comprehensive printing performance index, Kn represents the ink absorption index of the printed paper, Is represents the ink diffusion index, Pn represents the printing pressure index, and ω 1 、ω 2 and ω 3 represent the weight coefficients, and ω 1 + ω 2 + ω3 = 1.

[0031] Further, compare the comprehensive printing performance index with the printing performance threshold, and according to the comparison result, perform corresponding control on the font and layout, specifically including:

[0032] When the comprehensive printing performance index is less than or equal to the printing performance threshold, keep the font and layout style;

[0033] When the comprehensive printing performance index is greater than the printing performance threshold, automatically trigger the adjustment of the font and layout. Select a font with thick strokes to increase the ink adhesion area and reduce the unclear text caused by ink spreading. At the same time, increase the font spacing to reduce the mutual influence of ink between adjacent characters.

[0034] A printing layout method based on online automatic layout design includes the following steps:

[0035] Step 1: Use a printing device to evenly print ink on the printing paper at the same interval and the same area, measure the reflection factors before and after printing in different printing areas, and calculate the ink absorption index of the printing paper;

[0036] Step 2: Collect the paper sample images before and after the ink is completely dried, and perform binarization processing to obtain the pixel values of each pixel point in the paper sample image. Compare the pixel values of the paper sample image before drying with the pixel values of the paper sample image after drying, and calculate the ink diffusion index;

[0037] Step 3: Collect several groups of pressure data, combine the drum diameter and the drum length, calculate the printing pressure, and through the printing pressure corresponding to each group of pressure data, after dimensionless processing, calculate the printing pressure index;

[0038] Step 4: Calculate the comprehensive printing performance index through the ink absorption index of the printing paper, the ink diffusion index, and the printing pressure index. Compare the comprehensive printing performance index with the printing performance threshold, and according to the comparison result, perform corresponding control on the font and layout.

[0039] (3) Beneficial effects

[0040] The present invention provides a printing layout system and method based on online automatic layout design, which has the following beneficial effects:

[0041] (1) The calculated ink absorption index can more accurately evaluate the ink absorption ability of the paper, which is crucial for the optimization of the printing process and the control of printing quality. Since the ink absorption ability of the paper directly affects the color vividness and clarity of the printed matter, it can provide real-time feedback for the printing device to help the device adjust the printing parameters, thereby ensuring printing quality and efficiency.

[0042] (2) By comparing the pixel values before and after drying, the diffusion index of the ink can be accurately calculated, which helps to more accurately evaluate the behavior of the ink during the printing process, and then optimize the printing parameters to improve the printing quality. Through online automatic typesetting design and precise control of the ink diffusion index, it is ensured that the quality and effect of each batch of printed products are consistent.

[0043] (3) By accurately calculating the printing pressure, it can be ensured that the pressure distribution in each part is uniform during the printing process, avoiding printing quality problems caused by uneven pressure. Analyzing the pressure data and calculating the printing pressure index can provide support for decision-making during the printing process, such as selecting appropriate printing materials and adjusting printing process parameters.

[0044] (4) By calculating and comparing the comprehensive printing performance index with the printing performance threshold in real time, the font, typesetting, and printing parameters are automatically adjusted to ensure that the printing quality always remains in the best state, thus effectively avoiding the unclear phenomenon caused by ink expansion and helping to reduce quality problems during the printing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 It is a schematic structural diagram of a printing typesetting system based on online automatic typesetting design of the present invention;

[0046] Figure 2 It is a schematic flowchart of a printing typesetting method based on online automatic typesetting design of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0047] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0048] Please refer to Figure 1 - Figure 2 , the present invention provides a printing typesetting system based on online automatic typesetting design, including: a paper ink absorption analysis module, an ink diffusion analysis module, a printing pressure analysis module, and a font and typesetting control module, wherein,

[0049] The paper ink absorption analysis module uses a printing device to uniformly print ink on the printing paper at the same interval and the same area, measures the reflectance factors before and after printing in different printing areas, and calculates the ink absorption index of the printing paper;

[0050] Use a printing device to evenly print ink on the printing paper at the same intervals and with the same area, ensuring that parameters such as the ink supply volume, printing speed, and printing pressure are consistent for each printing. After printing, let the ink stay on the printing paper for a certain period, usually 2 minutes, to ensure that the ink fully penetrates the paper. Measure different printed areas of the printing paper to obtain the reflection factors before and after printing;

[0051] It should be noted that the same interval refers to the positional interval between each printed area. The reflection factor, also known as the reflectance or reflection coefficient, is the ratio of the radiant flux reflected by an object to the radiant flux reflected by a perfect diffuser under the same conditions. The reflection factor of the printing paper can be measured using a reflection photometer or a whiteness meter, ensuring that the measurement conditions are consistent, including the light source, measurement angle, etc.;

[0052] Obtain the reflection factors before and after printing for each printed area, and calculate the ink absorption index of the printing paper. The calculation formula is as follows:

[0053]

[0054] Among them, Kn represents the ink absorption index of the printing paper, R0 i represents the reflection factor before printing of the i-th printed area, RY i represents the reflection factor after printing of the i-th printed area, i = 1, 2, …, N, where N is a positive integer;

[0055] It should be noted that the ink absorption index indicates the degree of reduction in the surface reflection factor of the paper after printing. When the ink absorption index is large, it means that the reflection factor of the paper after printing has decreased significantly, that is, the paper surface has absorbed more ink, resulting in less reflected light. This usually means that the ink absorption performance of the paper is poor because a thick ink layer has formed on the paper surface instead of being effectively absorbed by the paper;

[0056] On the contrary, if the value of the ink absorption index is small, it indicates that the reflection factor of the paper after inking has decreased less, that is, the paper surface has absorbed less ink and more reflected light. This usually means that the ink absorption performance of the paper is good because the ink can be more evenly distributed on the paper surface, resulting in a clearer and more delicate printing effect;

[0057] The ink absorption index obtained through calculation can accurately evaluate the ink absorption ability of the paper, which is crucial for optimizing the printing process and controlling the printing quality. Since the ink absorption ability of the paper directly affects the color vividness and clarity of the printed matter, it can provide real-time feedback to the printing device, helping the device adjust the printing parameters to ensure printing quality and efficiency.

[0058] The ink diffusion analysis module collects images of paper samples before and after the ink is completely dried, performs binarization processing, obtains the pixel values of each pixel point in the paper sample image, compares the pixel values of the paper sample image before drying with those after drying, and calculates the diffusion index of the ink;

[0059] Use the printing equipment to evenly print the ink on the printing paper at the same interval and the same area, ensure that parameters such as the ink supply amount, printing speed, and printing pressure for each printing are consistent. Before the ink dries, use a high-resolution camera to capture the image of the printed paper sample. After the ink is completely dried, capture the image of the printed paper sample again, and perform binarization processing on the paper sample images before and after the ink is completely dried respectively;

[0060] It should be noted that binarization processing, also known as binary image processing, is an image processing method. Its principle is based on the gray-scale distribution of the image. In a gray-scale image, the gray-scale value of each pixel point is a value between 0 (black) and 255 (white). The process of binarization processing is to set the gray-scale value of the pixel points on the image to 0 or 255, that is, to make the entire image show an obvious visual effect of only black and white;

[0061] Obtain the pixel values of each pixel point in the image, compare the pixel values before drying with those after drying, and calculate the diffusion index of the ink. The calculation formula is as follows:

[0062]

[0063] Among them, Is represents the diffusion index of the ink, fx,y B represents the pixel value of the pixel point at coordinates (x, y) before drying, fx,y A represents the pixel value of the pixel point at coordinates (x, y) after drying, x = 1, 2,..., X, X is a positive integer, y = 1, 2,..., Y, Y is a positive integer;

[0064] It should be noted that when the ink expansion index is larger, it means that the expansion ability of the ink on the paper is stronger, that is, the ink is more likely to spread or expand on the paper during the printing process. On the contrary, when the ink expansion index is smaller, it means that the expansion ability of the ink on the paper is weaker. This kind of expansion may affect the final visual effect of the printed matter. If the ink expansion is too serious, it may lead to problems such as blurred colors, unclear boundaries, or color bleeding, thus affecting the clarity and readability of the printed matter;

[0065] By comparing the pixel values before and after drying, the diffusion index of the ink can be accurately calculated, which helps to more accurately evaluate the behavior of the ink during the printing process, and then optimize the printing parameters to improve the printing quality. Through online automatic typesetting design and precise control of the ink diffusion index, it is ensured that the quality and effect of each batch of printed products are consistent.

[0066] The printing pressure analysis module collects several groups of pressure data, combines the drum diameter and the drum length, calculates and obtains the printing pressure. Through the printing pressure corresponding to each group of pressure data, after dimensionless processing, the printing pressure index is calculated.

[0067] Several groups of pressure data are collected through a pressure sensor, that is, the pressure on the contact surface between the drums, and the actual printing equipment parameters are obtained, including the drum diameter and the drum length.

[0068] The printing pressure is calculated and obtained through the pressure between the drum end faces, the drum diameter, and the drum length. The calculation formula is as follows:

[0069]

[0070] Among them, P represents the printing pressure, F represents the pressure on the drum contact surface, D represents the drum diameter, L represents the drum length, K represents the compensation coefficient, and 0 < K < 2.

[0071] It should be noted that the compensation coefficient K is usually used in the printing process to adjust or compensate for the pressure changes caused by factors such as the drum contour shape, material properties, and speed. The K value can be adjusted through actual printing experiments and observing the printing effects, such as ink color uniformity and dot gain degree, to determine the optimal K value, or it can be provided by the equipment manufacturer.

[0072] The printing pressure corresponding to each group of pressure data is obtained. After dimensionless processing, the printing pressure index is calculated. The calculation formula is as follows:

[0073]

[0074] Among them, Pn represents the printing pressure index, P j represents the printing pressure corresponding to the j-th group of pressure data, j = 1, 2,..., M, and M is a positive integer.

[0075] It should be noted that when the printing pressure is insufficient, the ink transfer is not sufficient, which may lead to insufficient ink coverage on the printed product and unclear images. When the printing pressure is excessive, since the ink on the printing plate spreads to the blank part outside the graphic, the ink transfer rate not only cannot be improved, but may also cause the problem of excessive ink expansion, resulting in serious dot gain on the printed product and obvious distortion of the graphics.

[0076] By precisely calculating the printing pressure, it is possible to ensure a uniform pressure distribution in each part during the printing process, avoiding printing quality problems caused by uneven pressure. Analyzing the pressure data and calculating the printing pressure index can provide support for decision-making during the printing process, such as selecting appropriate printing materials and adjusting printing process parameters.

[0077] The font and layout control module calculates the comprehensive printing performance index through the ink absorption index of the printing paper, the ink diffusion index, and the printing pressure index. It compares the comprehensive printing performance index with the printing performance threshold and controls the font and layout accordingly based on the comparison result.

[0078] Obtain the ink absorption index of the printing paper, the ink diffusion index, and the printing pressure index. After linear normalization processing, calculate the comprehensive printing performance index. The calculation formula is as follows:

[0079] CPI = ω 1 *Kn + ω 2 *Is + ω 3 *Pn

[0080] Where, CPI represents the comprehensive printing performance index, Kn represents the ink absorption index of the printing paper, Is represents the ink diffusion index, Pn represents the printing pressure index, ω 1 、ω 2 And ω 3 Represents the weight coefficient, and ω 1 + ω 2 + ω 3 = 1;

[0081] Preset the printing performance threshold, compare the comprehensive printing performance index with the printing performance threshold, and control the font and layout accordingly based on the comparison result. Specifically, it includes:

[0082] When the comprehensive printing performance index is less than or equal to the printing performance threshold, keep the font and layout style;

[0083] When the comprehensive printing performance index is greater than the printing performance threshold, automatically trigger the adjustment of the font and layout. Select a font with thick strokes to increase the ink adhesion area and reduce the blurring of text caused by ink expansion. At the same time, increase the font spacing to reduce the mutual influence of ink between adjacent characters.

[0084] It should be noted that during the printing process, if the ink diffusion index is relatively high, that is, the ink is prone to spreading on the paper, then when using fonts with relatively thin strokes, there may be a phenomenon of font blurring or overlapping caused by ink diffusion. This is because the line spacing of the thin strokes is relatively narrow, and the ink is prone to contact or overlap with each other during diffusion, thus affecting the printing effect. On the contrary, if the strokes are thicker, the spacing between the lines is relatively larger, and the ink is not prone to contact or overlap with each other during diffusion, thus being able to maintain the clarity and accuracy of the font.

[0085] By calculating and comparing the comprehensive printing performance index with the printing performance threshold in real time, the font, layout, and printing parameters are automatically adjusted to ensure that the printing quality always remains in the best state, thus effectively avoiding the unclear phenomenon caused by ink expansion and helping to reduce quality problems during the printing process.

[0086] Please refer to Figure 2 , the present invention also provides a printing layout method based on online automatic layout design, including the following steps:

[0087] Step 1: Use a printing device to uniformly print ink on the printing paper at the same interval and the same area, measure the reflection factors before and after printing in different printing areas, and calculate the ink absorption index of the printing paper;

[0088] Step 2: Collect the paper sample images before and after the ink is completely dried, and perform binarization processing to obtain the pixel values of each pixel point in the paper sample image. Compare the pixel values of the paper sample image before drying with the pixel values of the paper sample image after drying, and calculate the ink diffusion index;

[0089] Step 3: Collect several groups of pressure data, combine the drum diameter and the drum length, calculate the printing pressure, and calculate the printing pressure index through the printing pressure corresponding to each group of pressure data after dimensionless processing;

[0090] Step 4: Calculate the comprehensive printing performance index through the ink absorption index of the printing paper, the ink diffusion index, and the printing pressure index. Compare the comprehensive printing performance index with the printing performance threshold, and perform corresponding control on the font and layout according to the comparison result.

[0091] In the application, several formulas involved are calculated by taking their numerical values after dimensionless treatment, and the formula is obtained by collecting a large amount of data for software simulation to get a formula closest to the actual situation. The coefficients in the formula are set by those skilled in the art according to the actual situation.

[0092] The above embodiments can be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using software, the above embodiments can be implemented in whole or in part in the form of a computer program product. Those of ordinary skill in the art will appreciate that the units and algorithm steps of the examples described in connection with the embodiments disclosed herein can be implemented in a combination of electronic hardware, computer software, and electronic hardware. Whether these functions are executed in hardware or software depends on the specific application and design constraints of the technical solution.

[0093] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units. They may be located in one place or distributed over multiple network units. Some or all of the units can be selected according to actual needs to achieve the objectives of the solution of this embodiment.

[0094] As described above, the specific implementation manners of the present application are only described, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present application, and all such changes or substitutions should be covered by the protection scope of the present application.

Claims

1. A printing typesetting system based on online automatic typesetting design, characterized by: include: The paper ink absorption analysis module uses a printing device to print ink evenly on the printing paper at the same interval and the same area, measures the reflection factor of different printing areas before and after printing, and calculates the ink absorption index of the printing paper; The ink diffusion analysis module collects paper sample images before and after the ink is completely dried, performs binarization processing, obtains the pixel value of each pixel in the paper sample image, compares the pixel value of the paper sample image before drying with the pixel value of the paper sample image after drying, and calculates the ink diffusion index; The printing pressure analysis module collects several sets of pressure data, combines the roller diameter and roller length, calculates the printing pressure, and calculates the printing pressure index after dimensionless processing based on the printing pressure corresponding to each set of pressure data; The font and typesetting control module calculates the comprehensive printing performance index through the ink absorption index of the printing paper, the diffusion index of the ink and the printing pressure index, compares the comprehensive printing performance index with the printing performance threshold, and controls the font and typesetting accordingly based on the comparison results.

2. A printing typesetting system based on online automatic typesetting design according to claim 1, characterized in that: Use printing equipment to print ink evenly on the printing paper at the same interval and the same area, ensuring that the ink supply, printing speed and printing pressure parameters are consistent for each printing. Allow the ink to stay on the printing paper for t minutes after printing.

3. The printing typesetting system based on online automatic typesetting design according to claim 2, characterized in that: Obtain the reflection factor of each printing area before and after printing, and calculate the ink absorption index of the printed paper. The formula is as follows: Among them, Kn represents the ink absorption index of printing paper, R0 i Represents the reflection factor of the i-th printing area before printing, RY i Represents the reflection factor of the i-th printing area after printing, i=1, 2,…, N, N is a positive integer.

4. The printing typesetting system based on online automatic typesetting design according to claim 1, characterized in that: Before the ink dries, the camera is used to capture the printed paper sample image. After the ink is completely dried, the printed paper sample image is captured again. The paper sample images before and after the ink is completely dried are binarized respectively.

5. The printing typesetting system based on online automatic typesetting design according to claim 4, characterized in that: Obtain the pixel value of each pixel in the paper sample image, compare the pixel value of the paper sample image before drying with the pixel value of the paper sample image after drying, and calculate the diffusion index of the ink. The formula is as follows: Among them, Is represents the diffusion index of ink, f(x,y) B Represents the pixel value of the pixel at the coordinate (x, y) of the paper sample image before drying, f(x, y) A Represents the pixel value of the pixel at the coordinate (x, y) of the paper sample image after drying, x = 1, 2, ..., X, X is a positive integer, y = 1, 2, ..., Y, Y is a positive integer.

6. The printing typesetting system based on online automatic typesetting design according to claim 1, characterized in that: The printing pressure is calculated by the pressure between the roller end faces, the roller diameter and the roller length. The formula is as follows: Among them, P represents the printing pressure, F represents the pressure on the contact surface of the roller, D represents the roller diameter, L represents the roller length, K represents the compensation coefficient, and 0 <K<2。 7. A printing typesetting system based on online automatic typesetting design according to claim 6, characterized in that: The printing pressure corresponding to each set of pressure data is obtained, and after dimensionless processing, the printing pressure index is calculated. The formula is as follows: Where Pn represents the printing pressure index, P j Represents the printing pressure corresponding to the j-th group of pressure data, j=1, 2, ..., M, and M is a positive integer.

8. The printing typesetting system based on online automatic typesetting design according to claim 1, characterized in that: The comprehensive printing performance index is calculated through the ink absorption index of the printing paper, the diffusion index of the ink and the printing pressure index after linear normalization. The formula is as follows: CPI=ω1*Kn+ω2*Is+ω3*Pn Among them, CPI represents the comprehensive printing performance index, Kn represents the ink absorption index of the printing paper, Is represents the diffusion index of the ink, Pn represents the printing pressure index, ω1, ω2 and ω3 represent weight coefficients, and ω1+ω2+ω3=1.

9. A printing typesetting system based on online automatic typesetting design according to claim 8, characterized in that: The comprehensive printing performance index is compared with the printing performance threshold, and the font and typesetting are controlled accordingly according to the comparison results, including: When the comprehensive printing performance index is less than or equal to the printing performance threshold, the font and typesetting style are maintained; When the comprehensive printing performance index is greater than the printing performance threshold, the font and typesetting adjustment is automatically triggered, and a font with thick strokes is selected to increase the ink adhesion area, while increasing the font spacing.

10. A printing typesetting method based on online automatic typesetting design, applied to the system according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: Use a printing device to evenly print ink on the printing paper at the same interval and the same area, measure the reflection factors of different printing areas before and after printing, and calculate the ink absorption index of the printing paper; Step 2: Collect the paper sample images before and after the ink is completely dried, perform binarization processing, obtain the pixel value of each pixel in the paper sample image, compare the pixel value of the paper sample image before drying with the pixel value of the paper sample image after drying, and calculate the diffusion index of the ink; Step 3: Collect several sets of pressure data, combine the roller diameter and roller length, calculate the printing pressure, and calculate the printing pressure index after dimensionless processing based on the printing pressure corresponding to each set of pressure data; Step 4: Calculate the comprehensive printing performance index through the ink absorption index of the printing paper, the diffusion index of the ink and the printing pressure index, compare the comprehensive printing performance index with the printing performance threshold, and control the font and layout accordingly based on the comparison results.

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