Screen printing based anti-counterfeiting pattern generation method, printing method and printed matter

Abstract

The present application relates to printing, copying, marking or copying process, especially a kind of anti-fake pattern generation method based on screen printing, printing method and printed matter the present application is according to the target graphic content to make first layer;Separation line is arranged on the first printing layer, and second layer is formed;The separation line separates the first layer into a plurality of filling areas;Texture filling is carried out to the plurality of filling areas, and third layer is formed, and the texture filling of adjacent filling area has different angle;According to the first layer, fourth layer is formed, and the fourth layer is a synergistic printing layer.The embodiment of the present application makes that when image is photographed or scanned to obtain when copying, part of light can be refracted and reflected to internal texture through stereoscopic transparent cover layer, so that the pattern obtained reversely lacks part of the content in the pattern and the texture is distorted, and the method can be used for main pattern and text of printed matter, and consumer is easy to identify.

Description

Technical Field

[0001] This invention relates to printing, reproduction, marking, or copying processes, and in particular to a method for generating anti-counterfeiting graphics based on screen printing, a printing method, and printed matter. Background Technology

[0002] In the packaging and printing industry, setting anti-counterfeiting marks on packaging is a common technical means for brands to identify genuine products. Common anti-counterfeiting marks typically include laser labels or anti-counterfeiting printed marks. Laser labels distinguish themselves from ordinary labels by reflecting light at different angles to create different patterns. Anti-counterfeiting printed marks use anti-counterfeiting ink to print specific patterns that reveal hidden patterns under specific light sources, thus preventing counterfeiting by unscrupulous manufacturers. With the development of printing and ink technologies, the technologies and materials related to laser labels and anti-counterfeiting inks have become increasingly widespread. Some counterfeit packaging boxes also have counterfeit labels or marks, making it difficult for consumers to distinguish them with the naked eye. Therefore, further complementary anti-counterfeiting measures are needed to increase the difficulty of counterfeiting and facilitate consumer identification. Summary of the Invention

[0003] In a first aspect, embodiments of this application provide a method for generating anti-counterfeiting graphics based on screen printing, which addresses the problems of existing anti-counterfeiting graphics being easy to copy and difficult to identify.

[0004] The anti-counterfeiting graphic method includes the following steps:

[0005] Create a first layer based on the target graphic content;

[0006] A dividing line is set on the first layer to form a second layer; the dividing line divides the first layer into multiple filled areas.

[0007] Texture filling is applied to the multiple filling areas to form a third layer, wherein the texture filling of adjacent filling areas has different angles;

[0008] Based on the first layer, a fourth layer is formed, wherein the fourth layer is an enhancement printing layer.

[0009] By employing the above method, the embodiments of the present invention achieve a printing effect where the final printed graphic has a three-dimensional transparent overlay covering the internal texture by filling the texture of the target graphic content with texture and enhancing printing. When the image is photographed or scanned during the counterfeiting process, the three-dimensional transparent overlay can refract and reflect some light through the internal texture, causing the reverse-obtained graphic to lack some content in the graphic and the texture to be distorted. Moreover, this method can be used for the main patterns and text of printed materials, making it easy for consumers to identify.

[0010] In one possible implementation, creating the first layer based on the target graphic content further includes:

[0011] Generate a first graphic based on the target graphic content;

[0012] Read the outline of the first graphic, perform vectorization processing on the outline, and obtain the vectorized outline;

[0013] The vectorized contour line is filled once.

[0014] In one possible implementation, setting a separator line on the first layer to form the second layer further includes:

[0015] A first outer node is set on the vectorized contour line;

[0016] A first inner node is set within the vectorized contour line;

[0017] Connect the first outer node and the first inner node to form the separator line.

[0018] In one possible implementation, the vertical distance from any point on the dividing line to the two adjacent contour lines is equal.

[0019] In one possible implementation, the separator line is either an explicit separator line or an implicit separator line.

[0020] In one possible implementation, the texture filling includes twill filling and / or dot matrix filling.

[0021] Secondly, embodiments of the present invention also provide a printing method based on the anti-counterfeiting graphic generation method of the first aspect described above, the printing method comprising:

[0022] Based on the first layer, a screen printing is performed on the printing carrier to obtain a printed graphic that displays the background color of the target image.

[0023] Based on the second and third layers, a second screen printing is performed on the printing carrier to obtain a second printed graphic that displays the edge lines and dividing lines of the target graphic.

[0024] Based on the fourth layer, enhanced printing is performed on the printing carrier to obtain a three-dimensional printed pattern with a transparent three-dimensional overlay.

[0025] In one possible implementation, performing secondary screen printing on the printing carrier based on the second and third layers further includes:

[0026] Based on the second layer, edge lines are printed on the first printing pattern;

[0027] Based on the third layer, further texture line printing is performed.

[0028] In one possible implementation, performing secondary screen printing on the printing carrier based on the second and third layers further includes:

[0029] Merge the second and third layers to obtain a line layer;

[0030] Based on the line layer, screen printing is performed on a single print pattern.

[0031] Thirdly, embodiments of the present invention also provide a printed matter having a printed pattern, the printed pattern having a base color layer at the bottom, an edge line and a fill layer on the base color layer, and an enhanced transparent three-dimensional layer on the surface. Attached Figure Description

[0032] Figure 1 This is a flowchart of the first embodiment of the present invention;

[0033] Figure 2 This is a textual example diagram of the first embodiment of the present invention;

[0034] Figure 3 This is a textual example diagram of the second embodiment of the present invention;

[0035] Figure 4 This is an example diagram of the invisible separator line in the third embodiment of the present invention;

[0036] Figure 5 The above is a graphical example of the actual presentation of the third embodiment of the present invention;

[0037] Figure 6 This is a flowchart of the fourth example of the present invention. Detailed Implementation

[0038] The following detailed description, in conjunction with specific embodiments and accompanying drawings, clarifies that the described embodiments are only a portion, not all, of the embodiments. All other embodiments obtained by those skilled in the art based on the following embodiments without inventive effort are also within the scope of protection of this invention.

[0039] The disclosure of the embodiments provides many different implementations or examples for different ways of implementing the invention. To simplify the disclosure of the invention, specific examples of components and arrangements are described in the embodiments. Of course, these are merely examples and are not intended to limit the invention. Furthermore, reference numerals and / or reference letters may be repeated in different examples in the embodiments; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various implementations and / or arrangements discussed.

[0040] To facilitate understanding of the problems to be solved and the background and principles of the technical solutions implemented in the embodiments of this application, the technologies related to the embodiments will be briefly described first.

[0041] Existing product packaging, such as tobacco and alcohol boxes, typically uses special area markings for anti-counterfeiting measures. These markings are only applied to specific areas and are not part of the main packaging design or characters. Furthermore, these anti-counterfeiting markings require specialized processes or materials for printing.

[0042] Screen printing is a common printing method. When printing multiple colors or multiple elements, the complex pattern needs to be broken down into multiple monochrome layers during graphic processing, and then printed one by one. This method can achieve designs with rich colors and precise details. Below are the detailed overall process and precautions.

[0043] Meanwhile, screen printing can create a three-dimensional effect in textures, often referred to as thick-plate printing or 3D printing. Ordinary screen printing uses a relatively thin ink layer. To achieve a three-dimensional effect, special inks and specific printing controls are used. High-density inks or 3D pastes are used to maintain a certain thickness after printing. During the printing process, the ink accumulates on the screen and is transferred to the substrate by the pressure of a squeegee, forming a thicker ink layer. Multiple printings are stacked, allowing the ink layers to dry or undergo preliminary curing (e.g., by baking or UV curing) after each print, before proceeding to the next. The ink layers can be layered one after another, ultimately creating a three-dimensional height and contour.

[0044] Regardless of the screen printing method used, creating the graphic to be printed and making the printing plate based on that graphic are crucial prerequisites for the screen printing process and determine the final printing effect. Current screen printing is generally used for printing the main elements of packaging, such as background color, texture, patterns, and characters. It is difficult to include anti-counterfeiting features in the printed content, making it relatively easy for counterfeiters to obtain the printed graphic by reverse engineering the actual product.

[0045] In order to address the aforementioned fundamental principles and technical problems, the first embodiment of the present invention provides a method for generating anti-counterfeiting graphics based on screen printing, which solves the problems that existing anti-counterfeiting graphics are easy to copy and difficult to identify.

[0046] like Figure 1 As shown, this anti-counterfeiting graphic method includes the following steps:

[0047] S11. Create a first layer based on the target graphic content;

[0048] S12. A dividing line is provided on the first printed layer to form a second layer; the dividing line divides the first layer into multiple filled areas;

[0049] S13. The plurality of filling areas are textured to form a third layer, wherein the texture filling of adjacent filling areas has different angles;

[0050] S14. Based on the first layer, a fourth layer is formed, wherein the fourth layer is an enhancement printing layer.

[0051] like Figure 2 As shown in the figure, taking the text mark shown in the figure as an example, in step S11, the first layer can be obtained by inputting the character, selecting a suitable font and size, and then graphically processing the character.

[0052] In step S12, there are several different ways to process the dividing line. Due to the characteristics of Chinese characters, unconnected strokes form independent graphic regions, and connected strokes form connected graphic regions. Therefore, the most basic dividing line can be the edge line of the stroke. Thus, it is necessary to generate the outline of each graphic region first. The outline can be generated manually or automatically by a computer. Manual operation is the operation of manually tracing the outline, which will not be explained in detail here. The automatic generation of the outline by a computer mainly includes several steps such as image preprocessing, edge detection, and outline rendering.

[0053] The purpose of image preprocessing is to convert the Chinese character graphics into a computer-processable format and prepare for subsequent edge detection. The first layer is the file obtained after graphical processing; it can be a vector graphic (such as SVG or AI format) or a bitmap graphic (such as PNG or JPEG format). Converting this first layer to grayscale, which contains only brightness information, with each pixel's value representing its grayscale level from 0 (pure black) to 255 (pure white), eliminates interference from color information in edge detection. To more clearly separate the Chinese characters from the background, further binarization is required. By setting a threshold, the grayscale values ​​of all pixels in the image are converted to only two values: 0 (black) and 255 (white). This makes the Chinese characters completely black and the background white.

[0054] Edge detection is a core step used to identify the outline of Chinese characters. For this purpose, an edge detection algorithm can be selected: many classic edge detection algorithms are available, and generally one of the following algorithms can be selectively used for processing:

[0055] Canny Algorithm: This is a relatively common algorithm that provides high-quality edges and is insensitive to noise. It detects edges using multi-level gradient values ​​and refines them using non-maximum suppression and hysteresis thresholding.

[0056] Sobel and Prewitt operators: These are gradient-based algorithms that find regions of drastic brightness changes, i.e., edges, by calculating the gradient of each pixel in the image. They are relatively simple, but sensitive to noise.

[0057] After selecting a suitable algorithm, apply it to the preprocessed first layer. The algorithm will output an edge map in which all the outlines of the Chinese characters are highlighted (usually in white), while the rest are in black.

[0058] Contour rendering converts detected edges into the desired contour effect. In graphics software, create a new, transparent layer, import the contour lines, and if the output contour lines are vector data, you can directly specify the thickness and color of these paths before rendering the outlines.

[0059] If the output outline is a bitmap (i.e., an edge map), use that map as a mask or selection, and then fill the area with the specified color.

[0060] When a single stroke or a series of connected strokes is considered as an independent graphic region, each graphic region is further texture-filled in step S13. Texture filling is applied to the multiple filled regions to form a third layer, with adjacent filled regions having different texture filling angles. Finally, the rendered outline layer is overlaid on the original Chinese character graphic layer, thus forming a Chinese character graphic with an outline.

[0061] Then, in step S13, texture filling is performed on the multiple filling areas to form a third layer. The texture filling of adjacent filling areas has different angles. The texture filling includes stripe filling or dot matrix filling, so that the graphic presents a texture effect. The texture effect of adjacent filling areas having different angles means that the extension direction of the stripes or dot matrix filling in the texture effect of adjacent filling areas is different. In fact, it is a better embodiment that the texture effect of non-adjacent filling areas also has different angles, which is intended to avoid the texture angle of other filling areas being inferred from the texture angle of a certain part.

[0062] In reality, texture effects can also be obtained through photography, scanning, etc., but they are still easily imitated. Therefore, in step S14 of this embodiment, after printing the above layers, an enhancement printing is performed on the resulting graphic to form an enhancement printing layer. This enhancement printing layer specifically refers to a transparent enhancement layer formed by enhancement printing with resin ink or varnish material. This transparent enhancement layer generally forms a transparent three-dimensional effect on the graphic surface. In this embodiment, because the internal graphic has texture filling, after the transparent enhancement layer is printed, an irregular lens effect is formed on the surface, producing a refraction effect on the internal texture filling. Furthermore, due to the large and irregular arc surface at the corners, it also has a greater refraction and reflection effect on light. Therefore, when copying by photography, scanning, etc., firstly, the internal texture filling undergoes irregular refraction, forming an irregular texture effect locally, such as... Figure 2 As shown at point A, the local texture sparsity and texture direction have changed, and parallel textures have intersected locally under refraction conditions; secondly, the large curvature surface at the corners reflects light irregularly, resulting in irregular reflective white spots in local areas, such as... Figure 2 As shown at point B, the reflective white spot can obscure the texture beneath it, and the reflective area itself has an irregular shape, obscuring not only the texture but also the edges of the strokes. Therefore, when copying a graphic through methods such as photography or scanning, the local texture of the obtained graphic changes from the original graphic, and the local texture image cannot be displayed correctly, significantly increasing the difficulty of copying.

[0063] By employing the above method, the first embodiment of the present invention achieves a printing effect where the final printed graphic has a three-dimensional transparent overlay covering the internal texture through texture filling and enhanced printing of the target graphic content. In particular, an irregular transmission effect is formed at the irregular turning points of the edges, and the transparent overlay at different edge shapes has different and irregular curved surfaces. When the image is photographed or scanned during the imitation process, the three-dimensional transparent overlay can refract and reflect some light through the internal texture, causing the reverse-obtained graphic to lack some content in the graphic and the texture to be distorted, making it impossible to directly imitate. Moreover, this method can be used for the main patterns and text of printed materials, making it easy for consumers to identify.

[0064] In step S12 of the first embodiment described above, independent graphic regions are formed between unconnected strokes. Therefore, the most basic dividing line can be the edge line of the stroke. Thus, it is necessary to first generate the outline of each graphic region. At this time, large filling areas are easily formed between connected strokes. When large filling areas are filled with the same texture along the boundary of the region, it is easy to infer the direction and density of the texture based on the clearly displayed parts during the copying process. To further solve this technical problem, a second embodiment is proposed based on the first embodiment. In the second embodiment, the dividing line includes edge lines and inner dividing lines, such as... Figure 3 As shown by line C, the inner dividing line further subdivides the area enclosed by the edge line. The inner dividing line includes a midline and connecting lines linking the midline to other vertices. This inner dividing line further divides the area enclosed by the edge line into multiple sub-regions. Combined with texture fills at different angles in each sub-region, the texture fills in each sub-region have different extension directions. Furthermore, the intersections of the edge lines and the inner dividing line, influenced by refraction and reflection from the surface transparent layer, further increase the difficulty of cloning through direct image acquisition.

[0065] The aforementioned inner dividing lines can be drawn manually or generated using computer graphics analysis software. When generating the inner dividing lines,

[0066] A first outer node is set on the vectorized contour line;

[0067] A first inner node is set within the vectorized contour line;

[0068] Connect the first outer node and the first inner node to form the separator line.

[0069] To avoid the separator line being generated as a straight line connecting the first outer node and the first inner node, and to facilitate the replication of its trajectory, in this embodiment, the vertical distance from the selected point on the separator line to the two adjacent contour lines is equal. The position of the selected point is constrained and defined, and then multiple selected points are connected to generate the separator line. When the contour line is an irregular line, the selected point is perpendicular to the tangent line of the corresponding point on the contour line.

[0070] In computer graphics processing, there is another skeletonized graphics algorithm that can be applied to the generation of separator lines for character graphics in this embodiment, which is achieved by iteratively removing pixels from the image edges.

[0071] Create a new layer on top of the image of the underlying characters and edges, duplicate the layer, and binarize the duplicated layer. Typically, the pixel value of black is 0, and the pixel value of white is 255.

[0072] The skeletonization process is performed in two steps and repeated in a large loop until the image no longer changes.

[0073] First round of removal: Remove the dots in the bottom left and top right corners.

[0074] Image traversal: Starting from the top left corner, scan the binarized image pixel by pixel.

[0075] Check pixels: For each foreground pixel P1 (with a value of 1), check its 8 neighboring pixels (from P2 to P9).

[0076] P9 P2 P3

[0077] P8 P1 P4

[0078] P7 P6 P5

[0079] Removal criteria: P1 is marked as to be removed only if it meets all four of the following conditions:

[0080] Condition A: 2 <= N(P1) <= 6. N(P1) is the number of pixels with a value of 1 among the 8 neighboring pixels around P1. This condition ensures that isolated points or points at the intersection of the center line are not removed.

[0081] Condition B: Z(P1) = 1. Z(P1) is the number of jumps (changes) from 0 to 1 when traversing P2 to P9 in sequence. This condition ensures that only points at the edges of the strokes are removed.

[0082] Condition C: P2×P4×P6=0.

[0083] Condition D: P4×P6×P8=0.

[0084] Conditions C and D are used to prevent the skeleton from breaking during removal and to ensure that only points at the "corners" are removed.

[0085] Mark the point to be removed: If P1 meets all four conditions, record its coordinates in a list, but do not change its value immediately.

[0086] Uniform Removal: After completing one image traversal, change the pixel value of all points marked as to be removed from 1 to 0.

[0087] Second round of removal: Remove the dots in the top left and bottom right corners.

[0088] This round of removal is similar in principle to the first round, except that two conditions have changed:

[0089] Traverse the image: Traverse the entire image again.

[0090] Check pixels: For each foreground pixel P1, check its 8 neighboring pixels.

[0091] Removal criteria: P1 is marked as to be removed only if it simultaneously meets all four of the following conditions:

[0092] Condition A: 2 <= N(P1) <= 6 (same as the first round).

[0093] Condition B: Z(P1) = 1 (same as in the first round).

[0094] Condition C: P2×P4×P8=0 (different from the first round).

[0095] Condition D: P2×P6×P8=0 (different from the first round).

[0096] Mark points to be removed: Record all points that meet the conditions.

[0097] Uniform removal: After completing the traversal, change all marked points from 1 to 0.

[0098] Repeat the first and second rounds of removal until, after a complete two-round removal operation, no more pixels can be removed. When this condition is met, the loop terminates. The remaining foreground pixels (with a value of 1) form the skeleton or center line of the Chinese character strokes.

[0099] In this way, the outer pixels are peeled away layer by layer until only the core skeleton remains.

[0100] Once the skeleton is obtained, it can be vectorized, and then its line width and color can be changed to make it have the same color as the edge lines.

[0101] like Figure 3 In the character region, the skeletonization algorithm described above can reduce the strokes of the graphic characters by deleting edge pixels, which is called a line located in the center of the stroke. By connecting the endpoints of the line and the specified points on the edge line, the region located within one or more strokes can be further subdivided into multiple irregular small regions. Then, by filling with textures at different angles, more complex line effects can be obtained.

[0102] Because some strokes, such as the left-falling and right-falling strokes, have an endpoint at the end of their outlines, such as... Figure 3In the "V"-shaped area, the dividing line can directly extend to this end point without secondary connection. According to the above skeletonization algorithm, the stroke will become shorter and cannot extend to this end point. At this time, it can be achieved based on the skeletonization calculation of the distance transform. This algorithm calculates the distance from each pixel inside the stroke to the nearest background (or contour) pixel. The higher this distance value, the closer the pixel is to the center of the stroke. Specifically, it includes:

[0103] Finding local maxima: In the result of the distance transform, find all pixel points with the largest local distance values. These points are the "spinal points" of the stroke.

[0104] Connecting the "spinal points": Connect these local maximum points to form the center line of the stroke.

[0105] The above first embodiment and second embodiment provide an image generation method based on text graphics. In the above two embodiments, the dividing line is a visible dividing line, that is, an entity line finally presented on the image. By setting the edge line and the dividing line, it does not affect the content expression of the text graphics. However, if the graphic itself is a graphic content expressed by lines, then adding an edge line or a dividing line in this graphic will affect the performance of the original lines. Therefore, in the third embodiment, as Figure 4 and Figure 5 shown in the graphic of the character's clothing line, Figure 4 the dotted line in it is the dividing line, but presenting the dividing line will affect the complete performance of the graphic. Therefore, this dividing line is an invisible dividing line, which is only used for the function of dividing the filling area and is different from the final presentation. For a graphic with lines inside, using the existing lines and the invisible dividing line to divide the filling area can better avoid obvious marks on the dividing boundaries of the filling textures at different angles, avoid generating regular dividing features, and can better prevent reverse imitation.

[0106] The fourth embodiment of the present invention also provides a printing method, which is used to print the graphic generated by the anti-counterfeiting graphic generation method based on screen printing in the first to third embodiments above. The printing method includes:

[0107] S21. According to the first layer, perform screen printing on the printing carrier once to obtain a primary printed graphic showing the background color of the target graphic and text;

[0108] S22. According to the second layer and the third layer, perform screen printing on the printing carrier twice to obtain a secondary printed graphic showing the edge line and the dividing line of the target graphic and text;

[0109] S23. Based on the fourth layer, perform enhanced printing on the printing carrier to obtain a three-dimensional printed pattern with a transparent three-dimensional overlay layer.

[0110] In this embodiment, the secondary screen printing on the printing carrier, based on the second layer and the third layer, further includes:

[0111] Based on the second layer, edge lines are printed on the first printing pattern;

[0112] Based on the third layer, further texture line printing is performed.

[0113] Preferably, in this embodiment, performing secondary screen printing on the printing carrier based on the second layer and the third layer further includes:

[0114] Merge the second and third layers to obtain a line layer;

[0115] Based on the line layer, screen printing is performed on a single print pattern.

[0116] An embodiment of the present invention also provides a printed matter having a printed pattern on the printed surface. The printed pattern has a base color layer at the bottom, an edge line and a fill layer on the base color layer, and an enhanced transparent three-dimensional layer on the surface. The enhanced transparent three-dimensional layer refracts and reflects light from the fill layer to block or bend the edge line and fill layer during reverse photography or scanning.

[0117] The above description is merely a preferred embodiment of the present application and does not limit the scope of disclosure of the embodiments of the present application. Any equivalent structural or procedural transformations made using the description and drawings of the embodiments of the present application, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection supported by the embodiments of the present application.

Claims

1. A method for generating anti-counterfeiting graphics based on screen printing, characterized in that, Includes the following steps: Create the first layer based on the target text and image content; A dividing line is set on the first layer to form a second layer; the dividing line divides the first layer into multiple filled areas. Texture filling is applied to the multiple filling areas to form a third layer, wherein the texture filling of adjacent filling areas has different angles; Based on the first layer, a fourth layer is formed, wherein the fourth layer is an enhancement printing layer; The step of creating the first layer based on the target graphic content further includes: Generate a first graphic based on the target graphic content; Read the outline of the first graphic, perform vectorization processing on the outline, and obtain the vectorized outline; The vectorized outline is filled once to form the first layer; The step of setting a separator line on the first layer to form a second layer further includes: A first outer node is set on the vectorized contour line; A first inner node is set within the vectorized contour line; Connect the first outer node and the first inner node to form an inner separator line.

2. The method for generating anti-counterfeiting graphics based on screen printing as described in claim 1, characterized in that, The vertical distance from any point on the inner dividing line to the two adjacent contour lines is equal.

3. The method for generating anti-counterfeiting graphics based on screen printing as described in claim 1 or 2, characterized in that, The dividing line can be a visible dividing line or a hidden dividing line.

4. The method for generating anti-counterfeiting graphics based on screen printing as described in claim 1, characterized in that, The texture filling includes twill filling and / or dot matrix filling.

5. A printing method based on the anti-counterfeiting graphic generation method according to any one of claims 1-4, characterized in that, include: Based on the first layer, a screen printing is performed on the printing carrier to obtain a printed graphic that displays the background color of the target image. Based on the second and third layers, a second screen printing is performed on the printing carrier to obtain a second printed graphic that displays the edge lines and inner dividing lines of the target graphic. Based on the fourth layer, enhanced printing is performed on the printing carrier to obtain a three-dimensional printed pattern with a transparent three-dimensional overlay.

6. The printing method as described in claim 5, characterized in that, Based on the second and third layers, secondary screen printing on the printing substrate further includes: Based on the second layer, edge lines are printed on the first printing pattern; Based on the third layer, further texture line printing is performed.

7. The printing method as described in claim 5, characterized in that, Based on the second and third layers, secondary screen printing on the printing substrate further includes: Merge the second and third layers to obtain a line layer; Based on the line layer, screen printing is performed on a single print pattern.

8. A printed matter based on any one of the printing methods of claims 5-7, wherein the printed matter has a printed pattern, characterized in that, The printed pattern has a base color layer at the bottom, an edge line and a fill layer on the base color layer, and an enhanced transparent three-dimensional layer on the surface.

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