Laser dotting-based book edge pattern processing method and book edge pattern processing apparatus

Abstract

The application provides a book edge pattern processing method and device based on laser dotting. The book edge pattern processing method comprises the following steps: obtaining a first corresponding relationship of a to-be-processed book edge, wherein the material of the to-be-processed book edge is stone paper, synthetic paper, a gold stamping layer or a gold stamping ink composite layer, and the first corresponding relationship is a corresponding relationship between laser dotting density and actual brightness of the to-be-processed book edge; determining a second corresponding relationship according to the first corresponding relationship, wherein the second corresponding relationship is a corresponding relationship between laser dotting density and digital gray scale of the to-be-processed book edge; and performing laser dotting on the to-be-processed book edge according to the second corresponding relationship and gray scale information of a preset pattern to form a pattern. The laser dotting technology is used to replace traditional ink printing, so that the ink-free and non-contact precise pattern processing of various book edge materials such as stone paper, synthetic paper, a gold stamping layer and a gold stamping ink composite layer is realized, and problems such as ink drying, solidification and retransfer are fundamentally avoided.

Description

Technical Field

[0001] This invention relates to the field of book edge processing technology, and in particular to a method and equipment for processing book edge patterns based on laser dotting. Background Technology

[0002] With the development of society and the economy and the improvement of people's living standards, the market has placed higher demands on the appearance quality and personalized design of books. As an important part of the book's appearance, the decorative craftsmanship of the book margins is receiving increasing attention from publishers, printing plants, and consumers.

[0003] Currently, book border decoration is mainly achieved through two methods: inkjet printing and transfer printing. However, both methods rely on ink (water-based ink or UV ink), which presents drawbacks such as high risks of ink re-transfer, high risks of adhesion, and insufficient precision. Specifically, water-based inks dry slowly and are prone to ink re-transfer. UV inks carry the risk of incomplete curing on the book border, easily causing the pages to stick together. Inkjet printing, being a non-contact printing method, can easily cause lateral expansion and satellite ink dots when ink droplets are ejected onto the book border, resulting in blurred edges, loss of detail, and difficulty in achieving high-precision printing.

[0004] In conclusion, existing book-edge printing technology urgently needs the development of a new book-edge decoration process to overcome the aforementioned shortcomings.

[0005] The content of the background section is merely the technology known to the inventor and does not necessarily represent the prior art in this field. Summary of the Invention

[0006] To address one or more deficiencies in existing technologies, this invention provides a method for processing book edge patterns based on laser dot marking, comprising: Obtain the first correspondence relationship of the book edge to be processed, wherein the material of the book edge to be processed is stone paper, synthetic paper, hot stamping layer or hot stamping ink composite layer, and the first correspondence relationship is the correspondence relationship between the laser dot density and the actual brightness of the book edge to be processed. A second correspondence is determined based on the first correspondence, wherein the second correspondence is the correspondence between the laser dot density and the digital grayscale of the edge of the book to be processed. Based on the second correspondence and the grayscale information of the preset pattern, laser dots are applied to the edge of the book to be processed to form a pattern.

[0007] According to one aspect of the present invention, the step of obtaining the first correspondence relationship of the book edge to be processed includes: Read the density-brightness data table of the laser dot test on the edge of the sample book and obtain the first correspondence.

[0008] According to one aspect of the present invention, the step of obtaining the first correspondence relationship of the book edge to be processed includes: Obtain a sample book, wherein the edge material of the sample book is the same as the edge material of the book to be processed; Laser dots were applied to different areas along the edges of the sample books using varying laser dot densities. The actual brightness of each area is detected to determine the first correspondence.

[0009] According to one aspect of the present invention, the step of determining a second correspondence based on the first correspondence includes: The digital grayscale is divided into multiple grayscale ranges, and each grayscale range includes one or more grayscale levels; The actual brightness corresponding to the laser dot density is matched with the grayscale range to establish the correspondence between laser dot density and grayscale range, and the second correspondence is determined.

[0010] According to one aspect of the present invention, the step of laser marking the edge of the book to be processed based on the second correspondence and the grayscale information of the preset pattern includes: Based on the second correspondence and the grayscale information of the preset pattern, the laser dot density corresponding to each pixel in the preset pattern is determined; Based on the laser dot density corresponding to each pixel in the preset pattern, laser dots are applied to the corresponding positions of the edge of the book to be processed.

[0011] According to one aspect of the present invention, the laser wavelength of the laser dotting is 280-400 nm.

[0012] The present invention also provides a book margin pattern processing device, comprising: A clamp configured to hold a book, wherein the material of the edge to be processed is stone paper, synthetic paper, hot stamping layer or hot stamping ink composite layer; A laser device includes one or more laser heads and a motion module, wherein the laser heads are configured to emit laser light, and the motion module is configured to drive the laser heads to move; and, The control unit, coupled to the laser device, is configured as follows: Obtain the first correspondence relationship of the book edge to be processed, wherein the first correspondence relationship is the correspondence between the laser dot density and the actual brightness of the book edge to be processed; A second correspondence is determined based on the first correspondence, wherein the second correspondence is the correspondence between the laser dot density and the digital grayscale of the edge of the book to be processed. Based on the second correspondence and the grayscale information of the preset pattern, the laser device is controlled to laser-dot the edge of the book to be processed to form a pattern.

[0013] According to one aspect of the present invention, the control unit is configured to read the density-brightness data table of the laser dot test on the edge of the sample book and obtain the first correspondence.

[0014] According to one aspect of the invention, the control unit is configured to: The digital grayscale is divided into multiple grayscale ranges, and each grayscale range includes one or more grayscale levels; The actual brightness corresponding to the laser dot density is matched with the grayscale range to establish the correspondence between laser dot density and grayscale range, and the second correspondence is determined.

[0015] According to one aspect of the invention, the control unit is configured to: Based on the second correspondence and the grayscale information of the preset pattern, the laser dot density corresponding to each pixel in the preset pattern is determined; Based on the laser dot density corresponding to each pixel in the preset pattern, laser dots are applied to the corresponding positions of the edge of the book to be processed.

[0016] According to one aspect of the invention, the wavelength of the laser emitted by the laser head is 280-400 nm.

[0017] According to one aspect of the invention, the clamp comprises: The substrate has a supporting surface for supporting books; A fixing plate is fixedly installed on the first side of the base; A movable clamping plate is movably disposed on the first side of the base, wherein a clamping space is formed between the bearing surface, the fixed clamping plate, and the movable clamping plate; and A drive module, connected to the movable clamping plate, is configured to drive the movable clamping plate to switch between a clamping position and a release position.

[0018] According to one aspect of the present invention, the plurality of laser heads includes a first laser head, a second laser head, and a third laser head, wherein the first laser head is located on the front side of the clamp, the second laser head is located on the rear side of the clamp, and the third laser head is located on the upper side of the clamp; The motion module includes a first module, a second module, and a third module. The first module is connected to the first laser head and configured to drive the first laser head to move, thereby adjusting the relative position of the first laser head and the fixture. The second module is connected to the second laser head and configured to drive the second laser head to move, thereby adjusting the relative position of the second laser head and the fixture. The third module is connected to the third laser head and configured to drive the third laser head to move, thereby adjusting the relative position of the third laser head and the fixture.

[0019] According to one aspect of the invention, the book edge hot stamping equipment further includes a lifting device connected to the clamp and configured to drive the clamp to rise and fall.

[0020] Compared with the prior art, embodiments of the present invention provide a method and equipment for processing book edge patterns based on laser dot notation. Compared with the prior art, the embodiments of the present invention provide a method and equipment for processing book edge patterns based on laser dotting. By replacing traditional ink printing with laser dotting technology, it realizes inkless and non-contact precision pattern processing on various book edge materials such as stone paper, synthetic paper, hot stamping layer and hot stamping ink composite layer, fundamentally avoiding problems such as ink drying, curing and re-transfer. Attached Figure Description

[0021] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 A flowchart of a book edge pattern processing method based on laser dotting according to an embodiment of the present invention is shown; Figure 2 A schematic diagram of a calibration target pattern according to an embodiment of the present invention is shown; Figure 3 A schematic diagram of a finished book edge according to an embodiment of the present invention is shown; Figure 4 A schematic diagram of a book margin pattern processing device according to an embodiment of the present invention is shown. Detailed Implementation

[0022] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0023] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0024] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows for communication; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0025] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0026] The following disclosure provides many different embodiments or examples for implementing various structures of the invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0027] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0028] Figure 1 A flowchart of a book edge pattern processing method 100 based on laser dotting according to an embodiment of the present invention is shown. Figure 1 As shown, the book edge pattern processing method 100 includes the following steps, which are described in detail below.

[0029] In step S100: Obtain the first correspondence of the book edge to be processed.

[0030] The edge to be processed refers to the edge of the book to be processed, including at least one of the top, foreground, and spine. In this embodiment, the book block is made of stone paper, synthetic paper, or ordinary paper. Stone paper is an environmentally friendly paper made primarily of limestone, possessing properties such as tear resistance, water resistance, and controllable degradation. Synthetic paper is made primarily of synthetic polymers such as polyethylene and polypropylene, also known as chemical film paper or plastic paper, possessing properties such as tear resistance, water resistance, and corrosion resistance. Ordinary paper includes, for example, offset paper, coated paper, newsprint, and white cardstock, which are conventional paper used for book and magazine printing. It should be noted that when the book block is made of ordinary paper, the edge to be processed is hot-stamped or treated with hot-stamping ink (hot-stamping followed by inkjet printing). The hot-stamping layer can be, for example, an aluminized film layer, and the color of the hot-stamping layer can be, for example, gold, red-gold, blue-gold, silver, or black-gold. Those skilled in the art will readily understand that, after the above treatment, a hot stamping layer or a hot stamping ink composite layer is formed on the surface of the book edge to be processed. Therefore, in this invention, the material of the book edge to be processed is stone paper, synthetic paper, a hot stamping layer, or a hot stamping ink composite layer.

[0031] The first correspondence is the relationship between the laser dot density on the edge of the book to be processed and the actual brightness.

[0032] In some embodiments, laser dot density refers to the number of laser dots per unit area (number density). In other embodiments, laser dot density refers to the percentage of the effective modified area (ablation point) formed by laser dotting per unit area to the total area (area density). Those skilled in the art will readily understand that, given a constant size of individual ablation points, number density and area density are positively correlated. It should be noted that for the same book edge to be processed, a higher laser dot density results in deeper ablation of the material surface, enhanced light scattering / absorption, and lower actual brightness; conversely, a lower dot density retains more of the original reflective surface, resulting in higher actual brightness. Therefore, by applying differentiated laser dot densities to different areas of the book edge, grayscale patterns with varying brightness can be formed.

[0033] It should also be noted that different materials used for book edges (such as stone paper, synthetic paper, hot stamping layers, etc.) have different optical properties and laser absorption rates, resulting in different actual brightness levels for the same laser dot density. Even for the same material, the actual brightness presented by the same laser dot density may differ between the paper surface and the book edge.

[0034] In a specific implementation, the initial relationship between the edge of the book to be processed and the sample book edge can be obtained through laser dot-mapping testing. Specifically, a sample book can be obtained first, with the edge material being the same as that of the edge to be processed. Preferably, the edge condition of the sample book (such as cutting accuracy, surface flatness, etc.) is consistent with the condition of the edge to be processed.

[0035] A gradient-density laser dotting technique can be used to mark different areas along the edges of sample books to create a calibration target image. Figure 2 A schematic diagram of a calibration target pattern according to an embodiment of the present invention is shown. The laser dot density should cover the entire range of the intended process window, typically with 10-20 density levels. Preferably, adjacent density levels can be distributed in an arithmetic sequence to meet the spatial resolution requirements of optical brightness detection and avoid measurement errors caused by edge effects.

[0036] Optical detection equipment (such as a spectrophotometer) can be used to measure the brightness of each area of ​​the calibration target image to determine the actual brightness of each area. This allows for the establishment of a mapping relationship between laser dot density and actual brightness, thus determining the first correspondence between the laser dot density and the actual brightness of the edge to be processed. In establishing this first correspondence, it is not necessary to include the laser dot density and actual brightness of all areas. Instead, representative areas with significant light-dark contrast can be selected, and their corresponding laser dot density and actual brightness can be included in the first correspondence to ensure its accuracy and discriminative power.

[0037] In some embodiments, the first correspondence obtained from the laser dot test of the sample book edge is stored in a predetermined storage location, such as a local database, a cloud server, or a process parameter library, in the form of a density-brightness data table. When implementing the book edge pattern processing method 100, the pre-stored density-brightness data can be directly read to obtain the first correspondence that matches the book edge to be processed, without having to repeat the laser dot test of the sample book edge.

[0038] In step S120: Determine the second correspondence based on the first correspondence.

[0039] The second correspondence is the correspondence between the laser dot density of the edge of the book to be processed and the digital grayscale.

[0040] Those skilled in the art will readily understand that digital grayscale contains 256 grayscale levels (0-255), where 0 represents pure black and 255 represents pure white. However, due to the material properties of the book edge to be processed and the laser processing technology, after laser dotting, the brightest part of the book edge (where the laser dot density is the lowest) may not achieve pure white, and the darkest part of the book edge (where the laser dot density is the highest) may not achieve pure black. Therefore, the actual achievable brightness range of the book edge to be processed may be less than the full color gamut of 0-255, and the laser dot density cannot be directly correlated with digital grayscale. Furthermore, due to limitations in the efficiency and cost of calibration testing, the number of density-brightness data sampling points obtained from laser dot testing of sample book edges is usually far less than 256, making it difficult to achieve a one-to-one mapping of color levels.

[0041] Therefore, digital grayscale can be divided into multiple grayscale intervals. This can be done by uniformly dividing the digital grayscale (0-255) into N intervals, each containing the same grayscale levels, for example, dividing it into 16 intervals, each containing 16 grayscale levels (0-15, 16-31, ..., 240-255). Alternatively, the digital grayscale (0-255) can be non-uniformly divided into n intervals according to human eye brightness perception, where dark intervals are denser and bright intervals are sparser, making the brightness variations in each interval more consistent in human eye perception. For example, dividing it into 8 intervals, each containing several grayscale levels (0-15, 16-35, 36-60, 61-90, 91-130, 131-180, 181-220, 221-255). It should be noted that the values ​​of N and n correspond to the number of laser dot densities in the first correspondence.

[0042] The actual brightness and grayscale range corresponding to each laser dot density in the first correspondence can be matched to establish the correspondence between laser dot density and grayscale range. The second correspondence is then determined by establishing the correspondence based on the relative brightness (e.g., the minimum brightness corresponds to the darkest range, the maximum brightness corresponds to the brightest range, and the intermediate brightness corresponds to the intermediate range in sequence).

[0043] In step S130: Based on the second correspondence and the grayscale information of the preset pattern, laser dots are applied to the edge of the book to be processed to form a pattern.

[0044] In a specific implementation, the laser dot density corresponding to each pixel in the preset pattern can be determined based on the second correspondence and the grayscale information of the preset pattern. Here, the preset pattern refers to the design draft corresponding to the pattern expected to be presented on the edge of the book to be processed. It is usually represented in the form of a digital image, which contains the grayscale information of each pixel and can reflect the light and dark distribution of each area of ​​the pattern and the details of the pattern (line outline, texture, etc.).

[0045] Figure 3 A schematic diagram of a finished book edge according to an embodiment of the present invention is shown. Figure 3 As shown, laser dots can be applied to corresponding positions on the edge of the book to be processed based on the laser dot density corresponding to each pixel in the preset pattern, thereby forming a pattern. Specifically, the laser device can be controlled to perform laser dotting operations at the corresponding positions on the edge of the book to be processed according to the pixel arrangement order of the preset pattern, so that the surface of the edge forms a light and dark distribution and pattern details corresponding to the grayscale distribution of the preset pattern, achieving accurate reproduction of the designed pattern on the edge surface. Preferably, when the laser device performs laser dotting operations, the laser wavelength is 280-400nm. The laser energy in this wavelength range can be effectively absorbed by the surface material of the edge of the book to be processed (especially the hot stamping layer), thereby forming an effective modified area (ablation point), ensuring the stability and durability of the processed pattern.

[0046] Compared with the prior art, the embodiments of the present invention provide a book edge pattern processing method 100 based on laser dotting. By replacing traditional ink printing with laser dotting technology, it realizes inkless and non-contact precision pattern processing on various book edge materials such as stone paper, synthetic paper, hot stamping layer and hot stamping ink composite layer, fundamentally avoiding problems such as ink drying, curing and re-transfer.

[0047] Figure 4 A schematic diagram of a book margin pattern processing device 200 according to an embodiment of the present invention is shown below, in conjunction with... Figure 4 Provide a detailed description.

[0048] like Figure 4As shown, the book edge pattern processing equipment 200 mainly includes a clamp 210, a laser device 220, and a control unit 230. The clamp 210 has a clamping space for holding books, the material of which the book edge to be processed is stone paper, synthetic paper, a hot stamping layer, or a hot stamping ink composite layer. After the book is placed in the clamping space, the clamp 210 can fix the book, ensuring that the book will not shift or deform during the pattern processing. The laser device 220 includes one or more laser heads 221, which can emit laser light to form an effective modified area (ablation point) on the book edge to be processed. In addition, the laser device 220 also includes a motion module 222, which is connected to the laser head 221 and can drive the laser head 221 to move, ensuring that the laser head 221 maintains a suitable relative position with the clamp 210. The control unit 230 is coupled to the laser device 220 and configured to acquire a first correspondence relationship of the edge to be processed; determine a second correspondence relationship based on the first correspondence relationship; and control the laser device 220 to perform laser dot-mapping on the edge to be processed to form a pattern based on the second correspondence relationship and the grayscale information of a preset pattern. As mentioned above, the first correspondence relationship is the correspondence between the laser dot density and the actual brightness of the edge to be processed; the second correspondence relationship is the correspondence between the laser dot density and the digital grayscale of the edge to be processed.

[0049] According to one embodiment of the present invention, such as Figure 4 As shown, the clamp 210 mainly includes a base 211, a fixed clamping plate 212, a movable clamping plate 213, and a drive module 214. The base 211 can be a plate-like structure, with its upper surface serving as a support surface for books. This support surface provides good support and positioning for the books, ensuring they are neatly arranged. In other embodiments, the base 211 can also adopt a frame structure, a rod structure, or other support structures; this invention is not limited to these.

[0050] Fixed clamping plates 212 and movable clamping plates 213 are spaced apart and arranged on the upper side (first side) of the base 211, forming the aforementioned clamping space between the bearing surface, the fixed clamping plates 212, and the movable clamping plates 213. It should be noted that the fixed clamping plate 212 is fixed relative to the base 211. They can be designed as a single integral component or as two separate components, rigidly connected by methods such as bonding, welding, or bolting. Preferably, two movable clamping plates 213 are provided, located on opposite sides of the fixed clamping plate 212, thus forming two clamping spaces. The movable clamping plates 213 can move relative to the fixed clamping plate 212 under the action of the drive module 214. Specifically, the drive module 214 can be a linear drive device such as a cylinder, hydraulic cylinder, or electric push rod, which can be integrated inside the base 211. Its output end is connected to the movable clamping plate 213, which can drive the movable clamping plate 213 to move linearly, thereby switching the movable clamping plate 213 between the clamping position and the release position, so as to realize the clamping and releasing of the book by the clamp 210.

[0051] According to one embodiment of the present invention, such as Figure 4 As shown, the book edge pattern processing equipment 200 includes multiple laser heads 221, namely a first laser head 221-a, a second laser head 221-b and a third laser head 221-c. The first laser head 221-a is located on the front side of the fixture 210, the second laser head 221-b is located on the rear side of the fixture 210, and the third laser head 221-c is located above the fixture 210.

[0052] Accordingly, the motion module 222 includes a first module 222-a, a second module 222-b, and a third module 222-c. The first module 222-a is connected to the first laser head 221-a and configured to drive the first laser head 221-a to move, for example, by driving the first laser head 221-a to move along a first direction and a second direction, thereby adjusting the relative position of the first laser head 221-a and the clamp 210. The second module 222-b is connected to the second laser head 221-b and configured to drive the second laser head 221-b to move, for example, by driving the second laser head 221-b to move along a first direction and a second direction, thereby adjusting the relative position of the second laser head 221-b and the clamp 210. The third module 222-c is connected to the third laser head 221-c and configured to drive the third laser head 221-c to move, for example, by driving the third laser head 221-c to move along a first direction and a third direction, thereby adjusting the relative position of the third laser head 221-c and the clamp 210. Optionally, the first module 222-a, the second module 222-b, and the third module 222-c are each composed of two vertically arranged linear drive devices (e.g., linear slides).

[0053] According to one embodiment of the present invention, such as Figure 4As shown, the book edge pattern processing equipment 200 may also include a lifting device 240. The lifting device 240 is installed at the bottom of the clamp 210 and is used to drive the clamp 210 to rise and fall, so as to facilitate the user to load and unload books.

[0054] According to one embodiment of the present invention, the control unit 230 is configured to read the density-brightness data of the laser dot test on the edge of the sample book and obtain the first correspondence.

[0055] According to one embodiment of the present invention, the control unit 230 is configured as follows: The digital grayscale is divided into multiple grayscale ranges, and each grayscale range includes one or more grayscale levels; The actual brightness corresponding to the laser dot density is matched with the grayscale range to establish the correspondence between laser dot density and grayscale range, and the second correspondence is determined.

[0056] According to one embodiment of the present invention, the control unit 230 is configured as follows: Based on the second correspondence and the grayscale information of the preset pattern, the laser dot density corresponding to each pixel in the preset pattern is determined; Based on the laser dot density corresponding to each pixel in the preset pattern, laser dots are applied to the corresponding positions of the edge of the book to be processed.

[0057] According to one embodiment of the present invention, the wavelength of the laser emitted by the laser head 221 is 280-400nm.

[0058] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A method for processing book edge patterns based on laser dot marking, comprising: Obtain the first correspondence relationship of the book edge to be processed, wherein the material of the book edge to be processed is stone paper, synthetic paper, hot stamping layer or hot stamping ink composite layer, and the first correspondence relationship is the correspondence relationship between the laser dot density and the actual brightness of the book edge to be processed. A second correspondence is determined based on the first correspondence, wherein the second correspondence is the correspondence between the laser dot density and the digital grayscale of the edge of the book to be processed. Based on the second correspondence and the grayscale information of the preset pattern, laser dots are applied to the edge of the book to be processed to form a pattern.

2. The method for processing book margin patterns according to claim 1, wherein, The steps to obtain the first correspondence between the edges to be processed include: Read the density-brightness data table of the laser dot test on the edge of the sample book and obtain the first correspondence.

3. The method for processing book margin patterns according to claim 1, wherein, The steps to obtain the first correspondence between the edges to be processed include: Obtain a sample book, wherein the edge material of the sample book is the same as the edge material of the book to be processed; Laser dots were applied to different areas along the edges of the sample books using varying laser dot densities. The actual brightness of each area is detected to determine the first correspondence.

4. The book edge processing method according to claim 1, wherein, The steps for determining the second correspondence based on the first correspondence include: The digital grayscale is divided into multiple grayscale ranges, and each grayscale range includes one or more grayscale levels; The actual brightness corresponding to the laser dot density is matched with the grayscale range to establish the correspondence between laser dot density and grayscale range, and the second correspondence is determined.

5. The book edge processing method according to claim 1, wherein, The step of laser marking the edge of the book to be processed according to the second correspondence and the grayscale information of the preset pattern includes: Based on the second correspondence and the grayscale information of the preset pattern, the laser dot density corresponding to each pixel in the preset pattern is determined; Based on the laser dot density corresponding to each pixel in the preset pattern, laser dots are applied to the corresponding positions of the edge of the book to be processed.

6. The book edge processing method according to any one of claims 1-5, wherein, The laser wavelength for laser dotting is 280-400nm.

7. A book border pattern processing device, comprising: A clamp configured to hold a book, wherein the material of the edge to be processed is stone paper, synthetic paper, hot stamping layer or hot stamping ink composite layer; A laser device includes one or more laser heads and a motion module, wherein the laser heads are configured to emit laser light, and the motion module is configured to drive the laser heads to move; and, The control unit, coupled to the laser device, is configured as follows: Obtain the first correspondence relationship of the book edge to be processed, wherein the first correspondence relationship is the correspondence between the laser dot density and the actual brightness of the book edge to be processed; A second correspondence is determined based on the first correspondence, wherein the second correspondence is the correspondence between the laser dot density and the digital grayscale of the edge of the book to be processed. Based on the second correspondence and the grayscale information of the preset pattern, the laser device is controlled to laser-dot the edge of the book to be processed to form a pattern.

8. The book margin pattern processing equipment according to claim 7, wherein, The control unit is configured to read the density-brightness data table of the laser dot test on the edge of the sample book and obtain the first correspondence.

9. The book margin pattern processing equipment according to claim 7, wherein, The control unit is configured as follows: The digital grayscale is divided into multiple grayscale ranges, and each grayscale range includes one or more grayscale levels; The actual brightness corresponding to the laser dot density is matched with the grayscale range to establish the correspondence between laser dot density and grayscale range, and the second correspondence is determined.

10. The book margin pattern processing equipment according to claim 7, wherein, The control unit is configured as follows: Based on the second correspondence and the grayscale information of the preset pattern, the laser dot density corresponding to each pixel in the preset pattern is determined; Based on the laser dot density corresponding to each pixel in the preset pattern, laser dots are applied to the corresponding positions of the edge of the book to be processed.

11. The book margin pattern processing equipment according to any one of claims 7-10, wherein, The laser emitted by the laser head has a wavelength of 280-400nm.

12. The book margin pattern processing equipment according to any one of claims 7-10, wherein, The clamp includes: The substrate has a supporting surface for supporting books; A fixing plate is fixedly installed on the first side of the base; A movable clamping plate is movably disposed on the first side of the base, wherein a clamping space is formed between the bearing surface, the fixed clamping plate, and the movable clamping plate; and A drive module, connected to the movable clamping plate, is configured to drive the movable clamping plate to switch between a clamping position and a release position.

13. The book margin pattern processing equipment according to any one of claims 7-10, wherein, The plurality of laser heads includes a first laser head, a second laser head, and a third laser head, wherein the first laser head is located on the front side of the fixture, the second laser head is located on the rear side of the fixture, and the third laser head is located on the upper side of the fixture; The motion module includes a first module, a second module, and a third module. The first module is connected to the first laser head and configured to drive the first laser head to move, thereby adjusting the relative position of the first laser head and the fixture. The second module is connected to the second laser head and configured to drive the second laser head to move, thereby adjusting the relative position of the second laser head and the fixture. The third module is connected to the third laser head and configured to drive the third laser head to move, thereby adjusting the relative position of the third laser head and the fixture.

14. The book margin pattern processing equipment according to any one of claims 7-10, wherein, The book edge hot stamping equipment also includes a lifting device, which is connected to the clamp and configured to drive the clamp to rise and fall.

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