Etching inkjet printing method, apparatus, device and medium based on same grating

Abstract

The application discloses an etching inkjet printing method and device based on the same grating, equipment and medium, and relates to the technical field of inkjet printing. The method comprises the following steps: acquiring a laser pulse signal corresponding to each etching position according to a to-be-printed image and etching parameters; acquiring an inkjet pulse signal corresponding to each printing position according to the to-be-printed image and printing parameters; acquiring the actual positions of a laser nozzle and the inkjet nozzle according to the grating code value of the printing trolley; controlling the laser nozzle to perform laser etching according to the actual position of the laser nozzle and the laser pulse signal, so as to obtain an etching image; and controlling the inkjet nozzle to perform inkjet printing on the etching image according to the actual position of the inkjet nozzle and the inkjet pulse signal, so as to obtain a target image. The same grating is used for positioning, new equipment does not need to be introduced, the complexity is reduced, and the cost is lowered.

Description

Technical Field

[0001] This invention relates to the field of inkjet printing technology, and in particular to an etching inkjet printing method, apparatus, equipment and medium based on the same grating. Background Technology

[0002] In existing inkjet printing technologies, different colored inks are typically sprayed onto a substrate through a printhead to form patterns and text. With changing consumer demands, inkjet printing technology is being used on a wide variety of materials to create products with pre-defined patterns and text. Laser etching is a technique that uses a high-energy-density laser beam to etch the surface of a material. This technique typically uses a laser beam to irradiate the material surface, causing it to heat up and be evaporated or oxidized. Laser etching is widely used in manufacturing, electronics, aerospace, semiconductors, and medicine. It can be used to create tiny, intricate structures such as circuit boards, microchips, and micromechanical systems.

[0003] Combining laser etching with multi-pass inkjet printing enables the creation of high-precision, high-definition patterns. Laser etching achieves high precision, while multi-pass inkjet printing produces patterns with even higher resolution. The combination of the two creates more detailed and clearer patterns, making products more aesthetically pleasing and upscale. Furthermore, multi-pass inkjet printing produces richer and more vibrant colors, while laser etching enhances the clarity of lines, resulting in superior printing quality.

[0004] In existing technologies, laser etching employs various methods to locate the etching medium and perform etching at precise positions. One common method is positioning using machine vision. Specifically, a camera or scanner is used to acquire images of the medium to be etched. Image processing algorithms are then used to analyze the morphology and positional information of the medium's surface, thereby controlling the laser to etch at the desired location. Another method involves using sensors to monitor the medium in real time, such as laser rangefinders. By calculating the measured distance, the laser can be controlled to etch at the desired location. However, integrating laser etching positioning technology into inkjet printing equipment would increase the complexity and cost of the equipment. Summary of the Invention

[0005] This invention provides an etching inkjet printing method, apparatus, device, and storage medium based on the same grating, to solve the technical problem of high complexity in existing inkjet printing and laser etching positioning methods.

[0006] In a first aspect, the present invention provides an etching inkjet printing method based on the same grating, characterized in that it is used in an inkjet printer, the inkjet printer comprising an inkjet printhead and a laser printhead disposed on a printing carriage, the method comprising:

[0007] Based on the image to be printed and the etching parameters, obtain the laser pulse signal corresponding to each etching position;

[0008] Based on the image to be printed and the printing parameters, obtain the inkjet pulse signal corresponding to each printing position;

[0009] The actual positions of the laser printhead and the inkjet printhead are obtained based on the raster encoding value of the printing carriage.

[0010] Based on the actual position of the laser nozzle and the laser pulse signal, the laser nozzle is controlled to perform laser etching to obtain an etched image;

[0011] Based on the actual position of the inkjet printhead and the inkjet pulse signal, the inkjet printhead is controlled to perform inkjet printing on the etched image to obtain the target image.

[0012] The etching parameters include a preset etching depth and a target etching depth, and the printing parameters include the number of print passes and the inkjet step distance.

[0013] Preferably, the step of obtaining the laser pulse signal corresponding to each etching position based on the image to be printed and etching parameters includes:

[0014] Based on the image to be printed and the etching parameters, etching data corresponding to each pixel of the image to be printed is obtained, wherein the etching data includes laser emission frequency and laser power;

[0015] Based on each of the etching data, obtain the corresponding laser pulse signal;

[0016] Establish a mapping relationship between each laser pulse signal and each etched position in the printing area.

[0017] The step of obtaining etching data corresponding to each pixel of the image to be printed based on the image to be printed and the etching parameters includes:

[0018] The image to be printed is binarized to obtain a binarized image;

[0019] The binarized image is smoothed according to a preset smoothing method to obtain the target etched image;

[0020] The target etched image is rasterized to obtain etched image data;

[0021] Preferably, the laser printhead and the inkjet printhead are mounted on the same printing carriage. In the stepping direction, the laser printhead is located in front of the inkjet printhead, and the distance between the laser printhead and the inkjet printhead is a first preset distance. The step of obtaining the actual positions of the laser printhead and the inkjet printhead based on the raster encoding value of the printing carriage includes:

[0022] The inkjet step distance is obtained based on the image to be printed and the printing parameters;

[0023] The etching step distance is obtained based on the image to be printed and the etching parameters;

[0024] The etching step distance and the inkjet step distance are compared to obtain the comparison results;

[0025] Based on the comparison results, the actual step distance is obtained;

[0026] The actual positions of the laser printhead and the inkjet printhead are obtained based on the actual step distance, the grating encoding value, and the first preset distance.

[0027] Preferably, the printing carriage includes a laser carriage and an inkjet carriage, the inkjet printhead is disposed on the inkjet carriage, and the laser printhead is disposed on the laser carriage. The step of obtaining the actual positions of the laser printhead and the inkjet printhead based on the raster code value of the printing carriage includes:

[0028] The inkjet step distance is obtained based on the image to be printed and the printing parameters;

[0029] The etching step distance is obtained based on the image to be printed and the etching parameters;

[0030] The actual position of the laser nozzle is obtained based on the grating code value of the laser carriage and the etching step distance;

[0031] The actual position of the inkjet printhead is obtained based on the grating code value of the inkjet carriage and the etching step distance.

[0032] Preferably, the step of controlling the laser nozzle to perform laser etching to obtain an etched image based on the actual position of the laser nozzle and the laser pulse signal includes:

[0033] Based on the actual position of the laser nozzle and the mapping relationship, the corresponding laser pulse signal is obtained;

[0034] Based on the laser pulse signal, the laser nozzle is controlled to perform laser etching to obtain an etched image.

[0035] Preferably, the distance between the laser carriage and the inkjet carriage in the stepping direction is greater than or equal to a second preset distance.

[0036] Secondly, the present invention provides an etching inkjet printing apparatus based on the same grating for use in an inkjet printer, the inkjet printer including an inkjet printhead and a laser printhead disposed on a printing carriage, the method comprising:

[0037] The first pulse signal acquisition module is used to acquire the laser pulse signal corresponding to each etching position based on the image to be printed and the etching parameters.

[0038] The second pulse signal acquisition module is used to acquire the inkjet pulse signal corresponding to each printing position based on the image to be printed and the printing parameters.

[0039] The actual position acquisition module is used to acquire the actual positions of the laser printhead and the inkjet printhead based on the raster encoding value of the printing carriage.

[0040] The laser etching module is used to control the laser nozzle to perform laser etching based on the actual position of the laser nozzle and the laser pulse signal, so as to obtain an etched image;

[0041] The inkjet printing module is used to control the inkjet printhead to perform inkjet printing on the etched image according to the actual position of the inkjet printhead and the inkjet pulse signal, so as to obtain the target image;

[0042] The etching parameters include a preset etching depth and a target etching depth, and the printing parameters include the number of print passes and the inkjet step distance.

[0043] Thirdly, the present invention provides a printing device for outputting arbitrary multiples of ink volume, including at least one processor, at least one memory, and computer program instructions stored in the memory, which, when executed by the processor, implement the method described in the first aspect.

[0044] Fourthly, the present invention provides a storage medium having stored thereon computer program instructions that, when executed by a processor, implement the method described in the first aspect.

[0045] In summary, the beneficial effects of this application are as follows:

[0046] The etching inkjet printing method based on the same grating in this application ensures consistent positional accuracy between laser etching and inkjet printing by using the same grating for positioning. This avoids positional deviations caused by different positioning methods, thus improving the quality and accuracy of the final print. Simultaneously, using the same grating for positioning reduces system complexity, eliminating the need for new positioning equipment, simplifying system design and maintenance, lowering costs, and improving system stability and reliability. Furthermore, laser etching enables high-precision processing of the printing medium surface, while multi-pass inkjet printing achieves high-resolution color output; the combination of both allows for the creation of more intricate patterns and text. Attached Figure Description

[0047] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments of the present invention will be briefly introduced below. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0048] Figure 1 This is a schematic diagram illustrating the principle of using multiple scans and printing to improve image resolution in this invention.

[0049] Figure 2 This is a flowchart of the etching inkjet printing method based on the same grating of the present invention.

[0050] Figure 3 This is a schematic diagram of the laser printhead and inkjet printhead of the present invention being arranged on the same printing carriage.

[0051] Figure 4 This is a schematic diagram of the laser printhead and inkjet printhead of the present invention being arranged on different printing carriages.

[0052] Figure 5 This is a schematic diagram of the structure of the etching inkjet printing method apparatus based on the same grating of the present invention.

[0053] Figure 6 This is a schematic diagram of the printing device of the present invention. Detailed Implementation

[0054] The features and exemplary embodiments of various aspects of the present invention will now be described in detail. To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only configured to explain the present invention and are not configured to limit the present invention. For those skilled in the art, the present invention can be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present invention by illustrating examples of the invention.

[0055] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes said element.

[0056] Example 1

[0057] The inkjet printhead of a printing device consists of multiple nozzles arranged vertically in one or more rows. This determines that the inkjet printhead has a fixed resolution, or inherent resolution. For example, the resolution of a certain nozzle is 300 DPI, which means there are 300 nozzles per inch.

[0058] like Figure 1 As shown, high-resolution image printing can be accomplished by multiple back-and-forth printing cycles from the inkjet printhead. For example, to print a 600 DPI image using a 300 DPI nozzle, the printhead needs to perform two scans and two print cycles to completely print the image data. Figure 1 As shown, both the triangle and the circle represent a single ink dot ejected from the printhead. The printhead can print an image formed by the dots represented by the circles in a single scan, with a resolution of 300 DPI. Then, the printhead can scan again to print the dots represented by the triangles, ultimately forming an image with a resolution of 600 DPI. Specifically, the printhead first scans the dots represented by the circles, then moves a certain distance along the vertical direction and scans again to print the dots represented by the triangles; this distance is the inkjet step distance. Since this process requires two scans, the initial number of scans is 2. If each scan is considered a pass, this is a 2-pass print.

[0059] The present invention is as follows Figure 2 As shown, an etching inkjet printing method based on the same grating is provided for an inkjet printer, the inkjet printer including an inkjet printhead and a laser printhead disposed on a printing carriage, the method comprising:

[0060] S1. Based on the image to be printed and the etching parameters, obtain the laser pulse signal corresponding to each etching position;

[0061] Specifically, firstly, based on the image to be printed and etching parameters, a laser pulse signal corresponding to each etching position is obtained. The etching position is obtained through the image to be printed. When the laser nozzle moves to the etching position, the laser nozzle is triggered to perform laser etching based on the laser pulse signal at the current position. The etching parameters include a target etching depth and a preset etching depth. The target etching depth refers to the desired etching depth during the actual etching process. Due to factors such as material properties and etching time, the actual etching depth may differ from the preset etching depth. The etching parameters can be adjusted according to the actual situation to achieve the target etching depth. The preset etching depth is the depth to which the laser nozzle performs one etching operation on the printing medium. Different printing media have different preset etching depths. To obtain an accurate preset etching depth, the device parameters also include printing medium information. The corresponding etching depth can be obtained based on the printing medium information.

[0062] In one embodiment, the step of obtaining the laser pulse signal corresponding to each etching position based on the image to be printed and etching parameters includes:

[0063] S11. Based on the image to be printed and the etching parameters, obtain etching data corresponding to each pixel of the image to be printed, wherein the etching data includes laser emission frequency and laser power;

[0064] Specifically, for an image to be printed, different pixels require different etching data to achieve the final etching effect. The etching data includes the laser emission frequency and laser power, which are key parameters controlling the laser etching depth and speed. Therefore, before laser etching, it is necessary to obtain etching data corresponding to each pixel based on the image to be printed and the etching parameters to ensure that the final etching effect meets the requirements. Laser emission frequency and laser power are two important parameters affecting the laser etching effect. The laser emission frequency determines the speed and frequency of the laser pulse, affecting the laser's interaction time and depth in the medium; the laser power determines the laser's energy, affecting the thermal effect and etching speed in the medium. Therefore, during laser etching, it is necessary to select appropriate laser emission frequency and laser power according to different media and etching depths to achieve the best etching effect.

[0065] In one embodiment, the step of obtaining etching data corresponding to each pixel of the image to be printed based on the image to be printed and the etching parameters includes:

[0066] S111. The image to be printed is binarized to obtain a binarized image;

[0067] The first step is to binarize the image to be printed. In image processing, it is often necessary to separate the target object from the background for subsequent processing. Binarization converts the pixels in the image into black and white pixels based on their grayscale values, thus separating the target object from the background. The binarized image is also easier to process morphologically and extract features. In laser etching, the image to be etched is converted into a binarized image, and then morphological operations are performed to obtain the boundary and position information of the etched area, so as to control the laser to perform precise etching.

[0068] Image binarization can be performed using several methods, exemplified but not limited to, including thresholding, histogram-based methods, and clustering-based methods. Thresholding compares the grayscale value of all pixels in a grayscale image to a pre-defined threshold; pixels with values ​​greater than the threshold are set to white, and those less than or equal to the threshold are set to black. The threshold can be adjusted according to the specific application scenario. Histogram-based methods utilize the image's grayscale histogram information to find a valley, dividing the grayscale into two parts, corresponding to black and white respectively. Clustering-based methods cluster image pixels according to their grayscale values, assigning different colors to pixels in different clusters, thus achieving image segmentation and binarization. For laser-etched images, the black-and-white contrast is usually high, so both global thresholding and adaptive thresholding methods can be considered. Global thresholding is suitable for images with relatively uniform brightness, while adaptive thresholding is suitable for images with large brightness variations or uneven illumination. Besides thresholding, histogram-based methods can also be considered, especially Otsu's algorithm, which can automatically find a suitable threshold and is suitable for images with significant differences between the background and foreground.

[0069] S112. The binarized image is smoothed according to a preset smoothing method to obtain the target etched image;

[0070] During laser etching, smoothing the image can reduce noise and make it clearer. It also helps to more accurately determine the boundaries of elements within the image. Therefore, after acquiring the binarized image, it is smoothed according to a preset smoothing method. This preset smoothing method includes Gaussian filtering and median filtering. Gaussian filtering is a linear smoothing method that eliminates noise and details by performing a convolution operation on the image, making it smoother. Median filtering, on the other hand, is a non-linear smoothing method that sorts the pixel values ​​in the image and selects the median value as the current pixel value to eliminate noise and details.

[0071] S113. Perform rasterization processing on the target etched image to obtain etched image data;

[0072] Rasterization is the process of converting continuous image data into discrete raster data, dividing the image into small pixels and converting the positions of these pixels into coordinates for laser etching. By rasterizing an image, continuous image information can be discretized, facilitating image processing and control by computers. Furthermore, for applications requiring high precision, such as laser etching or inkjet printing, rasterization can improve image processing accuracy to the pixel level, resulting in higher control precision and more accurate etching or printing results.

[0073] S12. Obtain the corresponding laser pulse signal based on each of the etching data;

[0074] For each pixel, the corresponding laser emission frequency and laser power can be calculated based on the corresponding etching data and provided to the modulator to generate the corresponding laser pulse signal for laser etching of the corresponding pixel.

[0075] S13. Establish the mapping relationship between each laser pulse signal and each etched position in the printing area;

[0076] Establishing a mapping relationship between each laser pulse signal and each etched position in the printing area enables precise positioning and fine control of laser etching. This mapping relationship allows each etched position to be associated with a corresponding laser pulse signal, enabling control of the laser printhead and thus accurately engraving the desired pattern on the target material surface. Simultaneously, the mapping relationship can also be used to control the movement of the printing carriage and inkjet printhead, thereby achieving the printing of the target image.

[0077] S2. Based on the image to be printed and the printing parameters, obtain the inkjet pulse signal corresponding to each printing position;

[0078] Specifically, the printing parameters include the number of print passes and the inkjet step distance. The inkjet pulse signal corresponding to each printing position can be obtained by rasterizing the image to be printed. Rasterization divides the printing area into small pixels. During printing, for each pixel, the amount of ink to be ejected and the corresponding ink type are calculated based on the printing parameters and converted into a corresponding inkjet pulse signal. Therefore, through rasterization, it is possible to obtain the inkjet pulse signal corresponding to each printing position based on the image to be printed and the printing parameters.

[0079] S3. Obtain the actual positions of the laser printhead and the inkjet printhead based on the grating code value of the printing carriage;

[0080] Specifically, since both the laser printhead and inkjet printhead are mounted on the print carriage, the printhead reciprocates along the guide beam relative to the printing medium. A grating is installed on the guide beam, and the position of the print carriage and the ink ejection position of the printhead are determined by the grating. Typically, the grating consists of a grating strip (grating ruler) and a grating decoder. The grating strip is a ruler fixed to the machine. When the carriage moves, it moves the grating decoder along the grating strip. The hardware can then read the position signal change caused by the grating decoder's movement along the grating strip, thereby determining the position of the print carriage and the ink ejection position of the printhead.

[0081] Using the same grating for positioning ensures consistent positional accuracy between laser etching and inkjet printing, avoiding positional deviations caused by different positioning methods and improving the final print quality and precision. Furthermore, using the same grating reduces system complexity, eliminating the need for new positioning equipment, simplifying system design and maintenance, lowering costs, and improving system stability and reliability.

[0082] S4. Based on the actual position of the laser nozzle and the laser pulse signal, control the laser nozzle to perform laser etching to obtain an etched image;

[0083] Specifically, the step of controlling the laser nozzle to perform laser etching to obtain an etched image based on the actual position of the laser nozzle and the laser pulse signal includes:

[0084] Based on the actual position of the laser nozzle and the mapping relationship, the corresponding laser pulse signal is obtained;

[0085] Based on the laser pulse signal, the laser nozzle is controlled to perform laser etching to obtain an etched image.

[0086] In one embodiment, after step S4 and before step S5, the method further includes:

[0087] Clean the printing substrate according to the preset cleaning method;

[0088] Specifically, the substrate can be glass, crystal, metal, plastic (including PVC, ABS, acrylic, etc.), stone, etc. After laser etching, the printing medium needs to be properly cleaned before inkjet printing. This is because some residues, such as smoke, microparticles, or oxides, may be generated during the laser etching process. These residues may affect the quality of inkjet printing, causing uneven ink adhesion or impurities. For example, the preset cleaning method includes one of air jet cleaning, vacuum cleaning, and electrostatic dust removal.

[0089] Specifically, the air jet cleaning method uses a gas spray gun or compressed air jet to remove impurities and dust from the surface of the printing media. Ensure that clean compressed air is used and maintain an appropriate spray distance and angle to avoid damaging the printing media. The vacuum cleaning method uses a vacuum cleaner to adsorb dust and impurities from the surface of the printing media. Depending on the material of the printing media, the suction power of the vacuum cleaner needs to be adjusted to avoid damaging the printing media.

[0090] In one embodiment, different cleaning methods can be used for different printing media, and the step of cleaning the printing media according to the preset cleaning method includes:

[0091] Based on the printing medium and the preset cleaning method, obtain the target cleaning method;

[0092] The printing medium is cleaned according to the target cleaning method described above;

[0093] Specifically, when the printing medium is a metal material, use solvents or acidic cleaners to remove etching residues; when the printing medium is a plastic material, avoid using acidic or solvent-based cleaners, as these may damage the plastic surface. Instead, use warm water and a neutral cleaner to clean the surface. When the printing medium is glass, it is relatively easy to clean. Use regular glass cleaner or warm water and a neutral cleaner, and wipe with a clean cloth to ensure there are no residues or watermarks.

[0094] S5. Based on the actual position of the inkjet printhead and the inkjet pulse signal, control the inkjet printhead to perform inkjet printing on the etched image to obtain the target image;

[0095] Specifically, after obtaining the actual positions of the laser printhead and inkjet printhead, the laser pulse signal and inkjet pulse signal corresponding to the current position can be obtained, thereby performing etching and inkjet printing. Within the same printing area, inkjet printing is performed only after laser etching is completed, ensuring that the inkjet print is on the etched image to obtain the target image. Laser etching can achieve high-precision processing of the printing medium surface, and multi-pass inkjet printing can achieve high-resolution color output. The combination of the two can achieve more refined patterns and text.

[0096] In one embodiment, the method further includes the following steps before step S1:

[0097] According to a preset layering processing method, the image to be printed is subjected to layering processing to obtain multiple layered images;

[0098] Specifically, in this embodiment, to enhance the three-dimensionality and detail of the printed product, the image to be printed is first processed into layers according to a preset layering method. This preset layering method includes: a color channel-based layering method, which decomposes the image into different color channels, such as red, green, and blue channels, each of which can be considered an independent layer; a depth and transparency-based layering method, which creates layers based on the image's depth or transparency information. The depth layer defines the spatial relationships of objects, while the transparency layer controls the image's transparency. Based on depth or transparency information, the image can be divided into multiple layers, each representing a different depth or transparency range; and an object recognition-based layering method, which uses computer vision technology to identify and segment objects in the image to be printed, then treats them as different layers, each of which can be processed independently or have effects added. Different layering methods produce different effects, and users can choose according to their needs.

[0099] Since the image is processed into several layered images, step S1 in this embodiment specifically includes: obtaining a laser pulse signal corresponding to each etching position based on each layered image and etching parameters;

[0100] Step S2 specifically includes: obtaining the inkjet pulse signal corresponding to each printing position based on each layer image and printing parameters;

[0101] After acquiring the laser pulse signal and inkjet pulse signal corresponding to each layer image, laser etching and printing of each layer image can be performed. In a specific embodiment, after layer processing, the image to be printed is divided into three layer images, referred to as the first layer image, the second layer image, and the third layer image, respectively. First, laser etching is performed according to the laser pulse signal corresponding to the first layer image, and then inkjet printing is performed according to the inkjet pulse signal corresponding to the first layer image to form a first image on the substrate. Subsequently, to protect the first image obtained from the etching and inkjet printing below, a transparent medium is filled on the first image according to the first layer image. The transparent medium includes transparent resin, such as photocurable resin (UV resin), epoxy resin, etc., which have good fluidity and curing properties to fill the grooves and gaps of the etched layer and ensure complete filling. Then, laser etching is performed according to the laser pulse signal corresponding to the second layer image, and inkjet printing is performed according to the inkjet pulse signal corresponding to the second layer image to form a second image on the substrate. A transparent medium is then filled on the second image according to the second layer image, and so on, to complete the laser etching and inkjet printing of all layer images.

[0102] Because the same grating triggers both laser etching and inkjet printing, multiple positioning steps are unnecessary during the laser etching and printing of each layer of the image, ensuring the precision of etching and printing while improving efficiency. Furthermore, since the etching and inkjet printing of each layer are precisely controlled, better three-dimensionality and detail can be achieved in the printed work. The superposition of colors or textures on different layers enhances the three-dimensionality and layering of the work, allowing the final printed product to form a three-dimensional effect similar to resin painting. In addition, the filling of the transparent medium forms a protective layer that protects the underlying etched and inkjet printed patterns from external environmental influences and damage. The transparent medium filling also provides a smoother surface, which helps to achieve a fine presentation of the etched and inkjet printed patterns.

[0103] Example 2

[0104] like Figure 3 As shown, the laser printhead and the inkjet printhead are mounted on the same printing carriage. In the stepping direction, the laser printhead is located in front of the inkjet printhead, and the distance between the laser printhead and the inkjet printhead is a first preset distance. The step of obtaining the actual positions of the laser printhead and the inkjet printhead based on the raster encoding value of the printing carriage includes:

[0105] S31. Obtain the inkjet step distance based on the image to be printed and the printing parameters;

[0106] S32. Obtain the etching step distance based on the image to be printed and the etching parameters;

[0107] S33. Compare the etching step distance and the inkjet step distance to obtain the comparison result;

[0108] S34. Based on the comparison results, obtain the actual step distance;

[0109] Specifically, the inkjet step distance can be determined based on the image size and resolution, as well as the inkjet printhead's precision. The etching step distance is determined based on the laser printhead's length and the number of etching passes. The etching and inkjet step distances are then compared. Since laser etching and inkjet printing occur on the same printing carriage, their speeds must be matched; otherwise, print quality will degrade. If the etching step distance is greater than the inkjet step distance, the actual step distance equals the inkjet step distance. If the etching step distance is less than the inkjet step distance, it means the inkjet speed is faster than the etching speed. If inkjet printing were performed according to the etching step distance, the inkjet speed would be too high, exceeding the laser etching speed, thus affecting print quality. Therefore, in this case, the actual step distance equals the etching step distance, thus matching the inkjet speed with the etching speed.

[0110] S35. Obtain the actual positions of the laser printhead and the inkjet printhead based on the actual step distance, the grating encoding value, and the first preset distance.

[0111] Specifically, after obtaining the actual step distance, the grating encoding value, and the first preset distance, the actual positions of the laser printhead and the inkjet printhead can be obtained. Since the inkjet printhead and the laser printhead are set on the same carriage, errors and deviations between different devices can be avoided, thereby improving printing accuracy and consistency, and avoiding the problem of collision between the inkjet printhead and the laser printhead. With the laser printhead and the inkjet printhead set on the same printing carriage, the etching and inkjet printing processes can be completed on the same platform, thereby saving equipment space and time and improving production efficiency.

[0112] Example 3

[0113] In this embodiment, the printing carriage includes a laser carriage and an inkjet carriage. The inkjet printhead is disposed on the inkjet carriage, and the laser printhead is disposed on the laser carriage. The step of obtaining the actual positions of the laser printhead and the inkjet printhead based on the raster code value of the printing carriage includes:

[0114] S031. Obtain the inkjet step distance based on the image to be printed and the printing parameters;

[0115] S032. Obtain the etching step distance based on the image to be printed and the etching parameters;

[0116] S033. Obtain the actual position of the laser nozzle based on the grating code value of the laser carriage and the etching step distance;

[0117] S034. Obtain the actual position of the inkjet printhead based on the grating code value of the inkjet carriage and the etching step distance.

[0118] Specifically, in this embodiment, such as Figure 4 As shown, the printing carriage includes a laser carriage and an inkjet carriage. The inkjet printhead is mounted on the inkjet carriage, and the laser printhead is mounted on the laser carriage. Since the inkjet printhead and the laser printhead are not mounted on the same carriage, they can move independently, thereby achieving more efficient printing. At the same time, the inkjet printhead and the laser printhead can focus on their own tasks, avoiding interference and conflict between them. Furthermore, there is no need to consider the speed matching problem during laser etching and inkjet printing. In the stepping direction, the laser carriage is always in front of the inkjet carriage, ensuring that laser etching is performed first to obtain the etched image, and then inkjet printing is performed on the etched image.

[0119] At different positions in the printing area, the laser printhead and the inkjet printhead may work simultaneously. To ensure that the movement trajectories of the inkjet printhead and the laser printhead do not interfere with each other during the printing process, which could lead to unsatisfactory printing results or collisions between the image to be printed and the inkjet carriage, the distance between the laser carriage and the inkjet carriage in the stepping direction is greater than or equal to a second preset distance. The second preset distance is determined based on the length of the laser carriage and the inkjet carriage, and no specific limitation is made here.

[0120] Example 4

[0121] Please see Figure 5 This invention provides an etching inkjet printing device based on the same grating for an inkjet printer. The inkjet printer includes an inkjet printhead and a laser printhead mounted on a printing carriage, and a first pulse signal acquisition module for acquiring a laser pulse signal corresponding to each etching position based on the image to be printed and etching parameters.

[0122] The second pulse signal acquisition module is used to acquire the inkjet pulse signal corresponding to each printing position based on the image to be printed and the printing parameters.

[0123] The actual position acquisition module is used to acquire the actual positions of the laser printhead and the inkjet printhead based on the raster encoding value of the printing carriage.

[0124] The laser etching module is used to control the laser nozzle to perform laser etching based on the actual position of the laser nozzle and the laser pulse signal, so as to obtain an etched image;

[0125] The inkjet printing module is used to control the inkjet printhead to perform inkjet printing on the etched image according to the actual position of the inkjet printhead and the inkjet pulse signal, so as to obtain the target image;

[0126] The etching parameters include a preset etching depth and a target etching depth, and the printing parameters include the number of print passes and the inkjet step distance.

[0127] It should be noted that each module and unit in the etching inkjet printing device based on the same grating in this embodiment corresponds one-to-one with each step in the etching inkjet printing method based on the same grating in the aforementioned embodiment. Therefore, the specific implementation of this embodiment can refer to the implementation of the etching inkjet printing method based on the same grating in the aforementioned embodiment, and will not be repeated here.

[0128] Example 5

[0129] In addition, combined Figure 6 The etching inkjet printing method based on the same grating described in the embodiments of the present invention can be implemented by a printing device. Figure 6 A schematic diagram of the hardware structure of the printing device provided in an embodiment of the present invention is shown.

[0130] The printing device may include a processor 401 and a memory 402 storing computer program instructions.

[0131] Specifically, the processor 401 may include a central processing unit (CPU), an application specific integrated circuit (ASIC), or one or more integrated circuits that can be configured to implement the embodiments of the present invention.

[0132] Memory 402 may include mass storage for data or instructions. For example, and not limitingly, memory 402 may include a hard disk drive (HDD), floppy disk drive, flash memory, optical disk, magneto-optical disk, magnetic tape, or Universal Serial Bus (USB) drive, or a combination of two or more of these. Where appropriate, memory 402 may include removable or non-removable (or fixed) media. Where appropriate, memory 402 may be internal or external to a data processing device. In a particular embodiment, memory 402 is a non-volatile solid-state memory. In a particular embodiment, memory 402 includes read-only memory (ROM). Where appropriate, the ROM may be a mask-programmed ROM, a programmable ROM (PROM), an erasable PROM (EPROM), an electrically erasable PROM (EEPROM), an electrically rewritable ROM (EAROM), or flash memory, or a combination of two or more of these.

[0133] The processor 401 reads and executes computer program instructions stored in the memory 402 to implement any of the data addressing methods for random area printing in the above embodiments.

[0134] In one example, a printing device for arbitrary ink volume output may also include a communication interface 403 and a bus 410. Wherein, as Figure 6 As shown, the processor 401, memory 402, and communication interface 403 are connected through bus 410 and complete communication with each other.

[0135] The communication interface 403 is mainly used to realize communication between various modules, devices, units and / or equipment in the embodiments of the present invention.

[0136] Bus 410 includes hardware, software, or both, that couples components used for arbitrary volume output together. For example, and not limitingly, the bus may include an Accelerated Graphics Port (AGP) or other graphics bus, an Enhanced Industry Standard Architecture (EISA) bus, a Front Side Bus (FSB), HyperTransport (HT) interconnect, an Industry Standard Architecture (ISA) bus, an Infinite Bandwidth Interconnect, a Low Pin Count (LPC) bus, a memory bus, a Microchannel Architecture (MCA) bus, a Peripheral Component Interconnect (PCI) bus, a PCI-Express (PCI-X) bus, a Serial Advanced Technology Attachment (SATA) bus, a Video Electronics Standards Association Local (VLB) bus, or other suitable buses, or combinations of two or more of these. Where appropriate, bus 410 may include one or more buses. While specific buses are described and illustrated in embodiments of the invention, the invention contemplates any suitable bus or interconnect.

[0137] Example 6

[0138] Furthermore, in conjunction with the etching inkjet printing method based on the same grating in the above embodiments, this invention can be implemented using a computer-readable storage medium. This computer-readable storage medium stores computer program instructions; when executed by a processor, these computer program instructions implement any of the etching inkjet printing methods based on the same grating in the above embodiments.

[0139] The above is a detailed description of the etching inkjet printing method, apparatus, equipment, and storage device based on the same grating provided in the embodiments of the present invention.

[0140] It should be clarified that the present invention is not limited to the specific configurations and processes described above and shown in the figures. For the sake of brevity, detailed descriptions of known methods are omitted here. In the above embodiments, several specific steps are described and shown as examples. However, the method process of the present invention is not limited to the specific steps described and shown. Those skilled in the art can make various changes, modifications, and additions, or change the order of steps, after understanding the spirit of the present invention.

[0141] The functional blocks shown in the above-described structural diagram can be implemented as hardware, software, firmware, or a combination thereof. When implemented in hardware, they can be, for example, electronic circuits, application-specific integrated circuits (ASICs), appropriate firmware, plug-ins, function cards, etc. When implemented in software, the elements of this invention are programs or code segments used to perform the required tasks. The programs or code segments can be stored on a machine-readable medium or transmitted over a transmission medium or communication link via data signals carried in a carrier wave. "Machine-readable medium" can include any medium capable of storing or transmitting information. Examples of machine-readable media include electronic circuits, semiconductor memory devices, ROM, flash memory, erasable ROM (EROM), floppy disks, CD-ROMs, optical disks, hard disks, fiber optic media, radio frequency (RF) links, etc. Code segments can be downloaded via computer networks such as the Internet, intranets, etc.

[0142] It should also be noted that the exemplary embodiments mentioned in this invention describe methods or systems based on a series of steps or apparatus. However, this invention is not limited to the order of the steps described above; that is, the steps can be performed in the order mentioned in the embodiments, or in a different order, or several steps can be performed simultaneously.

[0143] The above description is merely a specific embodiment of the present invention. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, modules, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here. It should be understood that the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should all be covered within the protection scope of the present invention.

Claims

1. An etching inkjet printing method based on the same grating, characterized in that, For an inkjet printer, the inkjet printer includes an inkjet printhead and a laser printhead disposed on a printing carriage, the inkjet printer is used for multi-pass printing, the method includes: Based on the image to be printed and the etching parameters, obtain the laser pulse signal corresponding to each etching position; Based on the image to be printed and the printing parameters, obtain the inkjet pulse signal corresponding to each printing position; The actual positions of the laser printhead and the inkjet printhead are obtained based on the raster encoding value of the printing carriage. Based on the actual position of the laser nozzle and the laser pulse signal, the laser nozzle is controlled to perform laser etching to obtain an etched image; Based on the actual position of the inkjet printhead and the inkjet pulse signal, the inkjet printhead is controlled to perform inkjet printing on the etched image to obtain the target image. The etching parameters include a preset etching depth and a target etching depth, and the printing parameters include the number of print passes and the inkjet step distance. The target etching depth refers to the etching depth that is desired to be achieved in the actual etching process, and the preset etching depth is the depth to which the laser printhead performs one etching on the printing medium. The step of obtaining the laser pulse signal corresponding to each etching position based on the image to be printed and etching parameters includes: Based on the image to be printed and the etching parameters, etching data corresponding to each pixel of the image to be printed is obtained, wherein the etching data includes laser emission frequency and laser power; Based on each of the etching data, obtain the corresponding laser pulse signal; Establish a mapping relationship between each laser pulse signal and each etch position in the printing area; The step of obtaining etching data corresponding to each pixel of the image to be printed based on the image to be printed and the etching parameters includes: The image to be printed is binarized to obtain a binarized image; The binarized image is smoothed according to a preset smoothing method to obtain the target etched image; The target etched image is rasterized to obtain etched image data; Based on the etching parameters and the etching image data, the etching data corresponding to each pixel is obtained.

2. The etching inkjet printing method based on the same grating according to claim 1, characterized in that, The laser printhead and the inkjet printhead are mounted on the same printing carriage. In the stepping direction, the laser printhead is located in front of the inkjet printhead, and the distance between the laser printhead and the inkjet printhead is a first preset distance. The step of obtaining the actual positions of the laser printhead and the inkjet printhead based on the raster encoding value of the printing carriage includes: The inkjet step distance is obtained based on the image to be printed and the printing parameters; The etching step distance is obtained based on the image to be printed and the etching parameters; The etching step distance and the inkjet step distance are compared to obtain the comparison results; Based on the comparison results, the actual step distance is obtained; The actual positions of the laser printhead and the inkjet printhead are obtained based on the actual step distance, the grating encoding value, and the first preset distance.

3. The etching inkjet printing method based on the same grating according to claim 1, characterized in that, The printing carriage includes a laser carriage and an inkjet carriage. The inkjet printhead is disposed on the inkjet carriage, and the laser printhead is disposed on the laser carriage. The step of obtaining the actual positions of the laser printhead and the inkjet printhead based on the raster code value of the printing carriage includes: The inkjet step distance is obtained based on the image to be printed and the printing parameters; The etching step distance is obtained based on the image to be printed and the etching parameters; The actual position of the laser nozzle is obtained based on the grating code value of the laser carriage and the etching step distance; The actual position of the inkjet printhead is obtained based on the raster code value of the inkjet carriage and the inkjet step distance.

4. The etching inkjet printing method based on the same grating according to claim 1, characterized in that, The step of controlling the laser nozzle to perform laser etching to obtain an etched image based on the actual position of the laser nozzle and the laser pulse signal includes: Based on the actual position of the laser nozzle and the mapping relationship, the corresponding laser pulse signal is obtained; Based on the laser pulse signal, the laser nozzle is controlled to perform laser etching to obtain an etched image.

5. The etching inkjet printing method based on the same grating according to claim 3, characterized in that, The distance between the laser carriage and the inkjet carriage in the stepping direction is greater than or equal to the second preset distance.

6. An etching inkjet printing apparatus based on the same grating, characterized in that, For an inkjet printer, the inkjet printer includes an inkjet printhead and a laser printhead disposed on a printing carriage, the inkjet printer is used for multi-pass printing, the device includes: The first pulse signal acquisition module is used to acquire a laser pulse signal corresponding to each etching position based on the image to be printed and etching parameters. Specifically, it is used to: acquire etching data corresponding to each pixel of the image to be printed based on the image to be printed and the etching parameters, wherein the etching data includes laser emission frequency and laser power, and the etching parameters include a preset etching depth and a target etching depth, the target etching depth being the desired etching depth in the actual etching process, and the preset etching depth being the depth to which the laser nozzle performs one etching on the printing medium; acquire a corresponding laser pulse signal based on each etching data; and establish a mapping relationship between each laser pulse signal and each etching position in the printing area. The first pulse signal acquisition module is further used to: perform binarization processing on the image to be printed to obtain a binarized image; perform smoothing processing on the binarized image according to a preset smoothing processing method to obtain a target etched image; perform rasterization processing on the target etched image to obtain etched image data; and acquire etching data corresponding to each pixel based on the etching parameters and the etched image data. The second pulse signal acquisition module is used to acquire the inkjet pulse signal corresponding to each printing position based on the image to be printed and the printing parameters. The actual position acquisition module is used to acquire the actual positions of the laser printhead and the inkjet printhead based on the raster encoding value of the printing carriage. The laser etching module is used to control the laser nozzle to perform laser etching based on the actual position of the laser nozzle and the laser pulse signal, so as to obtain an etched image; The inkjet printing module is used to control the inkjet printhead to perform inkjet printing on the etched image according to the actual position of the inkjet printhead and the inkjet pulse signal, so as to obtain the target image; The printing parameters include the number of print passes and the inkjet step distance.

7. A printing device, characterized in that, It includes at least one processor, at least one memory, and computer program instructions stored in the memory, which, when executed by the processor, implement the method as described in any one of claims 1-5.

8. A storage medium storing computer program instructions thereon, characterized in that, When the computer program instructions are executed by a processor, the method as described in any one of claims 1-5 is implemented.

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