Distance-based UV lamp power adjustment method, device, equipment and storage medium

Abstract

The present invention belongs to the field of printing technology, and specifically provides a distance-based UV lamp power adjustment method, device, equipment and storage medium. The method includes: determining the amount of printed ink in each printing area; determining the power weight of each light source for each printing area; and determining the output power of the light source according to the amount of printed ink in each printing area and the power weight of each light source for each printing area. The device includes: a printing ink amount determination module; a power weight determination module; and an output power determination module. The embodiment of the present invention determines the output power of the light source by the amount of printed ink in each printing area and the power weight of the light source for each printing area, so that the output power of the light source is better adapted to the amount of printed ink in each printing area and the distance between the light source and each printing area, so that the curing degree of the ink in each printing area can be as close to the ideal degree as possible, thereby suppressing the curing path and improving the quality of the printed product.

Description

[0001] This application is a divisional application of the invention patent application filed on October 21, 2020, with the invention name "Power adjustment method, device, equipment and storage medium of UV lamp" and application number 202011134722.8. Technical Field

[0002] The present invention relates to the field of printing technology, and in particular to a distance-based UV lamp power adjustment method, device, equipment and storage medium. Background Art

[0003] UV printers (Ultraviolet LED Inkjet Printers) use UV (Ultraviolet, UV for short) for printing. UV inks are cured under the ultraviolet radiation emitted by UV lamps. The resulting printed products are clean, saturated in color, with delicate images and high gloss. They are particularly suitable for high-speed printing and have excellent adsorption and mechanical properties for various print media. Therefore, UV printing has been widely used today.

[0004] In the prior art, UV lamps are usually used to indiscriminately irradiate UV ink on the printing medium, that is, all light sources on the UV lamp use the same power to irradiate the UV ink on the entire printing medium. However, due to the different amounts of ink in each printing area on the printing medium, the indiscriminate irradiation technical solution causes different degrees of UV ink curing, resulting in uneven image quality on the printing medium, that is, there is a technical problem of curing channel. Summary of the Invention

[0005] In view of this, the embodiments of the present invention provide a distance-based UV lamp power adjustment method, device, equipment and storage medium to solve the technical problem of curing channel in the prior art to a certain extent.

[0006] In a first aspect, an embodiment of the present invention provides a distance-based UV lamp power adjustment method, wherein the UV lamp includes multiple light sources, and the UV lamp is used to irradiate at least one printing area. The method includes:

[0007] S10: Acquire printing parameters, and determine the printing ink volume of each printing area according to the printing parameters;

[0008] S20: determining a power weight of each light source for each printing area according to a distance between each light source and each printing area;

[0009] S30: determining the output power of each light source according to the power weight of each light source for each printing area and the amount of printing ink in each printing area;

[0010] Among them, in S20, it also includes:

[0011] S24: Obtaining a distance threshold;

[0012] S25: comparing the distance between each light source and each printing area with the distance threshold;

[0013] S26: If the distance between the light source and the printing area is less than the distance threshold, the power weight is determined according to the distance; if the distance between the light source and the printing area is greater than or equal to the distance threshold, the step of determining the power weight according to the distance is skipped.

[0014] Preferably, steps S24 to S25 are replaced by the following steps:

[0015] S21: Get weight threshold;

[0016] S22: Compare the power weight with the weight threshold;

[0017] S23: Adjust the power weight that is less than or equal to the weight threshold to zero.

[0018] Preferably, in S10, the following steps are included:

[0019] S11: performing fitting processing on the printing ink amount of each printing area to obtain a fitting curve or a fitting straight line;

[0020] S12: re-determining the printing ink amount of each printing area according to the fitting curve or the fitting straight line.

[0021] Preferably, the UV lamp includes n light sources, and the UV lamp is used to irradiate m printing areas, where n and m are both positive integers. In S20, the power weight satisfies a first conversion formula, which is:

[0022]

[0023] Among them, W ij represents the power weight of the j-th light source for the i-th printing area, d ij Represents the distance between the j-th light source and the i-th printing area, where A and k are both positive real numbers, 1≤k, i and j are both positive integers, 1≤i≤m, 1≤j≤n.

[0024] Preferably, the S20 includes:

[0025] According to the d ij and the W ij A one-to-one mapping relationship is established to establish a lookup table;

[0026] The distance between each light source and each printing area is obtained, and the distance is used as an index to search the lookup table to obtain the corresponding power weight.

[0027] Preferably, the UV lamp includes n light sources, and the UV lamp is used to irradiate m printing areas, where n and m are both positive integers. In S30, the output power of the light source satisfies a second conversion formula, which is:

[0028]

[0029] Among them, P j Denotes the output power of the jth light source, D i represents the amount of printing ink in the i-th printing area, W ij It represents the power weight of the j-th light source for the i-th printing area, where i and j are both positive integers, 1≤i≤m, 1≤j≤n.

[0030] Preferably, the UV lamp includes n light sources, where n is a positive integer. In S30, the output power of the light source satisfies a third conversion formula, which is:

[0031] P j =D j_near *W j_near

[0032] Among them, P j Denotes the output power of the jth light source, D j_near W represents the amount of ink printed in the printing area closest to the jth light source. j_near It represents the power weight of the j-th light source for the printing area closest to it, where j is a positive integer, 1≤j≤n.

[0033] In a second aspect, an embodiment of the present invention provides a distance-based UV lamp power adjustment device, wherein the UV lamp includes multiple light sources, and the UV lamp is used to irradiate at least one printing area, and the device includes:

[0034] a printing ink quantity determination module, the printing ink quantity determination module being configured to obtain printing parameters and determine the printing ink quantity of each printing area according to the printing parameters;

[0035] A power weight determination module, the power weight determination module is used to determine the power weight of each light source for each printing area based on the distance between each light source and each printing area; and also includes: obtaining a distance threshold; comparing the distance between each light source and each printing area with the distance threshold; if the distance between the light source and the printing area is less than the distance threshold, determining the power weight based on the distance; if the distance between the light source and the printing area is greater than or equal to the distance threshold, skipping the step of determining the power weight based on the distance.

[0036] An output power determination module is configured to determine the output power of each light source according to a power weight of each light source for each printing area and an amount of printed ink in each printing area.

[0037] In a third aspect, an embodiment of the present invention provides a printing device, which further includes at least one processor, at least one memory, and computer program instructions stored in the memory, and when the computer program instructions are executed by the processor, implements any one of the methods described in the first aspect above.

[0038] In a fourth aspect, an embodiment of the present invention provides a storage medium having computer program instructions stored thereon, which implement any one of the methods described in the first aspect when the computer program instructions are executed by a processor. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work, and these are all within the scope of protection of the present invention.

[0040] Figure 1 This is a schematic diagram of curing ink on a printing medium provided by an embodiment of the present invention.

[0041] Figure 2 The present invention provides a flow chart of a UV lamp power regulation method.

[0042] Figure 3A This is a schematic diagram of determining the amount of printing ink provided by an embodiment of the present invention.

[0043] Figure 3B This is another schematic diagram of determining the amount of printing ink provided by an embodiment of the present invention.

[0044] Figure 4 This is a flow chart of a method for determining power weight provided by an embodiment of the present invention.

[0045] Figure 5 This is a flowchart of another method for determining power weight provided by an embodiment of the present invention.

[0046] Figure 6 The figure is a flow chart of a method for determining the amount of printing ink provided by an embodiment of the present invention.

[0047] Figure 7A This is a schematic diagram of a linear fitting of the printing ink volume provided by an embodiment of the present invention.

[0048] Figure 7B This is a schematic diagram of curve fitting for printing ink volume provided by an embodiment of the present invention.

[0049] Figure 8 The figure is a schematic structural diagram of a power adjustment device for a UV lamp provided by an embodiment of the present invention.

[0050] Figure 9 It is a structural schematic diagram of a printing device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0051] The features and exemplary embodiments of various aspects of the present invention will be described in detail below. In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below in conjunction with the accompanying drawings and Examples. 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 implemented without the need for some of these specific details. The following description of the embodiments is merely to provide a better understanding of the present invention by illustrating examples of the present invention.

[0052] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, the elements defined by the phrase "comprising..." do not exclude the presence of other identical elements in the process, method, article, or device comprising the elements.

[0053] It should be noted that, in this document, the terms "UV ink", "UV ink", "ink", "ink" and "varnish" are generally used interchangeably. The terms "irradiation" and "radiation" are also generally used interchangeably.

[0054] See Figure 1 , is a schematic diagram of UV lamp curing ink on multiple printing areas.

[0055] The printing medium 120 includes a plurality of printing areas, namely, printing area 1, printing area 2 and printing area 3.

[0056] The nozzle 130 is used to spray ink on the printing medium 120. The nozzle 130 includes 9 nozzles. For ease of description, the nozzles are arranged in the direction of their height (i.e. Figure 1 The nozzles are numbered as shown in the figure (from top to bottom). Nozzles 1-3 spray ink in printing area 1, nozzles 4-6 spray ink in printing area 2, and nozzles 7-9 spray ink in printing area 3.

[0057] The UV lamp 110 includes multiple light sources, namely light source 1, light source 2, light source 3 and light source 4. The four light sources are used to emit light of a specific wavelength (usually invisible light, such as ultraviolet light) to irradiate the ink on the printing medium 120 to achieve the technical effect of curing the varnish.

[0058] In most applications, the amount of ink printed on print area 1, print area 2, and print area 3 is unequal. However, existing technologies employ a uniform irradiation method for these three print areas. Specifically, light sources 1, 2, 3, and 4 irradiate these three print areas with equal output power. This results in different degrees of ink curing in these three print areas, leading to uneven print quality on print medium 120, i.e., the presence of curing bands. Furthermore, existing technologies typically operate UV lamps at maximum output power, resulting in high energy consumption.

[0059] In this regard, the present invention proposes a power adjustment method, device, equipment and storage medium for a UV lamp to solve the technical problems of the curing channel to a certain extent.

[0060] See Figure 2 , is a flow chart of a UV lamp power adjustment method provided by an embodiment of the present invention, the method includes the following steps.

[0061] S10: Acquire printing parameters, and determine the printing ink volume of each printing area according to the printing parameters;

[0062] S20: determining a power weight of each light source for each printing area according to a distance between each light source and each printing area;

[0063] S30: Determine the output power of each light source according to the power weight of each light source for each printing area and the amount of printing ink in each printing area.

[0064] Wherein, the UV lamp includes multiple light sources, and the UV lamp is used to irradiate at least one printing area.

[0065] The printing parameters include one or more of image dot matrix data, printing mode, feather height, and step distance.

[0066] Printing modes include OnePass printing mode, Multi-Pass scanning and printing mode, and Single Pass scanning and printing mode.

[0067] Multi-pass scanning and printing means that each unit of the printed image must be interpolated multiple times before printing is completed. Each unit is composed of multiple pixels. For example, in 2-pass scanning and printing, each unit is composed of 2 pixels, and in 3-pass scanning and printing, each unit is composed of 3 pixels. Multi-pass scanning and printing has low efficiency and low output, but it is cheap and suitable for small batch and intermittent production. Wide-format printed products are achieved through nozzle splicing or continuous multi-pass printing. Multi-pass scanning and printing modes are further divided according to the number of times the nozzle scans the same area, that is, the number of passes. For example, the 2-pass printing mode requires 2 scans to complete printing, and the 4-pass printing mode requires 4 scans to complete printing.

[0068] Single-pass scanning and printing means that each unit of the printed image only needs one scan to complete the printing.

[0069] One-pass printing uses multiple printheads scanning side by side to print the image in one pass. One-pass printing offers high efficiency and throughput, making it suitable for high-volume, continuous production.

[0070] Unless otherwise specified, single-pass printing in this application refers to a single print pass. For example, in 4-pass printing mode, the first or second pass printing process is a single-pass print pass. In the case of One-pass printing, a single-pass print pass means the print head completes the printing process in a single scan.

[0071] During a single scan, the printhead prints ink onto the print medium while moving along the scanning direction (usually perpendicular to the printhead height direction) to form a corresponding printed image. Therefore, the amount of ink printed in each print area can be determined based on the print mode, the ink output of each nozzle, and the correspondence between each nozzle in the printhead and the print area. The ink output of each nozzle can be determined based on the image dot matrix data. In particular, if feathering processing is also performed, the ink output of each nozzle can be determined based on the image dot matrix data and the feathering height. The "ink output of a print area" referred to in the embodiments of the present invention refers to the average ink output of that print area.

[0072] For easier understanding, see Figure 3A The nozzle 130 includes 9 nozzles in total. Figure 3A In the order from top to bottom, they are recorded as nozzles 1 to 9. In a single scan printing, the ink output of nozzles 1 to 9 is Y1, Y2, ..., Y9 respectively.

[0073] As mentioned above, nozzles 1 to 3 spray ink on printing area 1, nozzles 4 to 6 spray ink on printing area 2, and nozzles 7 to 9 spray ink on printing area 3. Therefore, the amount of printing ink in printing area 1 is The amount of ink printed in printing area 2 is The printing ink volume of printing area 3 is

[0074] In the embodiment of the present invention, if one printing area is printed by only one nozzle for ink jetting, the amount of printing ink in the printing area is equal to the amount of ink ejected by the nozzle.

[0075] In another embodiment of the present invention, another method for determining the amount of printing ink in a multi-pass printing and scanning mode is also provided. Figure 3B In the multi-pass scanning printing mode, the nozzle moves along Figure 3B The vertical downward direction is stepped by PassH, where PassH represents the step distance. When printing the third pass, the printing area 1 includes the ink printed by the first pass, the ink printed by the second pass, and the ink printed by the third pass. Therefore, the printing ink volume of the printing area 1 is The amount of ink printed in printing area 2 is ; The amount of printing ink in printing area 3 is In this embodiment, the printed ink volume is the cumulative printed ink volume of the printing area, thereby taking into account the ink volume of multiple interpolations of multiple passes, so as to improve the adaptability between output power and printed ink volume in subsequent processing.

[0076] The distance between the light source and the printing area refers to the distance between the center of the light source and the center of the printing area. In another embodiment of the present invention, the distance between the light source and the printing area may also be the shortest distance between the light source and the printing area. In other embodiments of the present invention, the distance between the light source and the printing area may be the distance between any point on the light source and any point on the printing area.

[0077] In S20, the distances between each light source and each printing area are different, and different distances correspond to different power weights, where the power weight is a positive real number. In one embodiment of the present invention, the power weight is less than or equal to 1. In a preferred embodiment of the present invention, the distance between the light source and the printing area is inversely proportional to the power weight, i.e., the greater the distance, the smaller the power weight.

[0078] Therefore, the output power of each light source can be determined based on the power weight of the light source relative to each printing area and the amount of printed ink in each printing area. In one embodiment, the output power of any light source is equal to the sum of the product of the amount of printed ink in i of all printing areas and the power weight of the light source for these i printing areas. Taking the three printing areas shown in the above embodiment as an example, the value of i ranges from 1 ≤ i ≤ 3, where i is a positive integer. For example, the output power of light source 1 is equal to the product of the power weight of light source 1 relative to printing area 1 and the amount of printed ink in printing area 1. Alternatively, the output power of light source 2 is equal to the sum of the power weight of light source 2 relative to printing area 2 and the amount of printed ink in printing area 2, and the power weight of light source 2 relative to printing area 3 and the amount of printed ink in printing area 3. Alternatively, the output power of light source 3 is equal to the sum of the power weight of light source 3 relative to printing area 1 and the amount of printed ink in printing area 1, the power weight of light source 3 relative to printing area 2 and the amount of printed ink in printing area 2, and the power weight of light source 3 relative to printing area 3 and the amount of printed ink in printing area 3.

[0079] In an embodiment of the present invention, the amount of ink printed in each printing area is determined by the printing parameters, and the power weight of the light source relative to the printing area is determined based on the distance between the light source and the printing area. Ultimately, the output power of each light source is determined based on the amount of ink printed in each printing area and the power weight. Because the amount of ink printed in each printing area is not the same, the output power of each light source of the UV lamp in an embodiment of the present invention is adjusted based on the amount of ink printed in each printing area. During the curing process, different output powers are used to cure printing areas with different amounts of ink printed. In this way, even though the amount of ink printed in each printing area is not the same, the output power of each light source of the UV lamp can be adapted to the amount of ink printed in each printing area, thereby accurately curing each printing area. This allows the degree of ink curing in each printing area to be as close to the ideal level as possible, thereby suppressing curing stagnation and significantly improving the quality of the printed product. In addition, since the distances between the light sources and each printing area are not the same, the output power of each light source of the UV lamp in the embodiment of the present invention is adjusted according to the distance between each light source and the printing area. During the curing process, different output powers are used to cure the printing areas at different distances from the light source. In this way, although the distances between the light source and the printing area are not the same, the output power of each light source of the UV lamp can be adapted to the distance of each printing area relative to the light source, thereby accurately curing each printing area, so that the curing degree of the ink in each printing area can be as close to the ideal degree as possible, thereby suppressing the curing path and significantly improving the quality of the printed product.

[0080] In one embodiment of the present invention, the UV lamp includes n light sources, and the UV lamp is used to irradiate m printing areas, where n and m are both positive integers. In the aforementioned step S20: determining the power weight of each light source for each printing area based on the distance between each light source and each printing area, the power weight satisfies a first conversion formula, which is:

[0081]

[0082] Among them, W ij represents the power weight of the j-th light source for the i-th printing area, d ij represents the distance between the j-th light source and the i-th printing area, A and k are both positive real numbers, i and j are both positive integers, 1≤k, 1≤i≤m, 1≤j≤n.

[0083] For easier understanding, please refer to Figure 1 , taking light source 1 and printing area 1 as an example, the power weight of light source 1 for printing area 1 is:

[0084]

[0085] Among them, W 11represents the power weight of light source 1 for printing area 1, d 11 Indicates the distance between light source 1 and printing area 1.

[0086] The values of A and k may vary due to differences in ink, print media, UV lamps, etc. Therefore, the optimal values of A and k can be determined by printing a large number of test images based on specific inks, specific print media, and specific UV lamps. These values can then be continuously optimized during product iterations.

[0087] For example, a large number of test images are generated using the aforementioned method, each corresponding to a specific set of values for A and k. Using these test images as samples, machine learning is performed on an integrated circuit with training capabilities (e.g., a Tensor Processing Unit (TPU), GPU, or FPGA) to generate a specific model. Subsequently, using the image to be printed as input to the model, the values for A and k are determined through inference using an integrated circuit with inference capabilities.

[0088] To simplify the processing, in another embodiment of the present invention, d ij and W ij In the field of industrial printing, the distance between each light source and the printing area is usually fixed. Therefore, the distance d between each light source and the printing area can be pre-set. ij Calculate the corresponding power weight W ij , based on the one-to-one correspondence, a database or lookup table is established.

[0089] Therefore, the aforementioned S20 can be simplified to: based on the distance between each light source and each printing area, using this distance as an index, search the database or lookup table to obtain the corresponding power weight. In this embodiment, it is possible to avoid calculating the power weight each time and directly extract the corresponding power weight from the database or lookup table, thereby improving efficiency.

[0090] In another embodiment of the present invention, the UV lamp includes n light sources, and the UV lamp is used to irradiate m printing areas, where n and m are both positive integers. In S30, the output power of the light source satisfies a second conversion formula, which is:

[0091]

[0092] Among them, P j Denotes the output power of the jth light source, D i represents the amount of printing ink in the i-th printing area, W ij It represents the power weight of the j-th light source for the i-th printing area, where i and j are both positive integers, 1≤i≤m, 1≤j≤n.

[0093] As mentioned above, W ij It can be obtained through the first conversion formula or through a lookup table or database. Therefore, the output power of each light source can be determined through the second conversion formula.

[0094] For easier understanding, please refer to Figure 1 , taking light source 1 as an example, its output power is:

[0095]

[0096] Where P1 represents the output power of light source 1, W 11 Represents the power weight of light source 1 for printing area 1, W 21 Represents the power weight of light source 1 for printing area 2, W 31 Indicates the power weight of light source 1 to printing area 3.

[0097] In another embodiment of the present invention, the UV lamp includes n light sources, where n is a positive integer. In S30, the output power of the light source satisfies a third conversion formula, which is:

[0098] P j =D j_near *W j_near

[0099] Among them, P j Denotes the output power of the jth light source, D j_near W represents the amount of ink printed in the printing area closest to the jth light source. j_near It represents the power weight of the j-th light source for the printing area closest to it, where j is a positive integer, 1≤j≤n.

[0100] For easier understanding, please refer to Figure 1 Taking light source 1 as an example, the printing area closest to light source 1 is printing area 1, and the printing ink volume of printing area 1 is , the power weight of light source 1 for printing area 1 is W 1_near , then the output power of light source 1 is

[0101] In another embodiment of the present invention, see Figure 4 , in S20, also includes:

[0102] S21: Get weight threshold;

[0103] S22: Compare the power weight with the weight threshold;

[0104] S23: Adjust the power weight that is less than or equal to the weight threshold to zero.

[0105] For example, in the aforementioned embodiment, W 31 If W is less than the weight threshold, 31 If the value of is set to 0, the output power of light source 1 is: Converts to:

[0106] In another embodiment of the present invention, see Figure 5 , in S20, also includes:

[0107] S24: Obtaining a distance threshold;

[0108] S25: comparing the distance between each light source and each printing area with the distance threshold;

[0109] S26: If the distance between the light source and the printing area is less than the distance threshold, the power weight is determined according to the distance; if the distance between the light source and the printing area is greater than or equal to the distance threshold, the step of determining the power weight according to the distance is skipped.

[0110] For example, in the above example, the distance d between the light source 1 and the printing area 3 is 31 If the distance is greater than the threshold, skip the 31 Calculate or find W 31 Steps. Correspondingly, W 31 is zero or null. Therefore, the output power of light source 1 is given by: Converts to:

[0111] In another embodiment of the present invention, see Figure 6 , in S10, including:

[0112] S11: performing fitting processing on the printing ink amount of each printing area to obtain a fitting curve or a fitting straight line;

[0113] S12: re-determining the printing ink amount of each printing area according to the fitting curve or the fitting straight line.

[0114] See Figure 7A , is a schematic diagram of a fitting process for printing ink amounts of multiple printing areas provided by an embodiment of the present invention.

[0115] Printing area 1 is sprayed with ink from nozzles 1 to 3, printing area 2 is sprayed with ink from nozzles 4 to 6, and printing area 3 is sprayed with ink from nozzles 7 to 9. As mentioned above, the ink output of nozzles 1 to 9 is Y1, Y2, ..., Y9 respectively. Figure 7AAs shown, a straight line is fitted to the ink output of the nine nozzles to obtain a fitted line. The midpoint of print area 1 is used as the coordinate value in the nozzle height direction, and the value of the fitted line corresponding to it is used as the ink output of print area 1. Similarly, the midpoint of print area 2 is used as the coordinate value in the nozzle height direction, and the value of the fitted line corresponding to it is used as the ink output of print area 2. The midpoint of print area 3 is used as the coordinate value in the nozzle height direction, and the value of the fitted line corresponding to it is used as the ink output of print area 3.

[0116] See Figure 7B , is another schematic diagram of fitting the ink volume of multiple printing areas provided by an embodiment of the present invention. As mentioned above, the ink output of nozzles 1 to 9 are Y1, Y2, ..., Y9 respectively. Figure 7A As shown in the figure, a curve fitting is performed on the ink output of the nine nozzles to obtain a fitting curve. The midpoint of print area 1 is used as the coordinate value in the nozzle height direction, and the corresponding value of the fitting curve is used as the ink output of print area 1. Similarly, the midpoint of print area 2 is used as the coordinate value in the nozzle height direction, and the corresponding value of the fitting curve is used as the ink output of print area 2. The midpoint of print area 3 is used as the coordinate value in the nozzle height direction, and the corresponding value of the fitting curve is used as the ink output of print area 3.

[0117] The present invention also provides a power adjustment device for UV lamps. Figure 8 , is a schematic structural diagram of a power adjustment device for a UV lamp provided in an embodiment of the present invention, wherein the UV lamp includes multiple light sources, and the UV lamp is used to irradiate at least one printing area, and the device includes:

[0118] a printing ink quantity determination module 810, configured to obtain printing parameters and determine the printing ink quantity of each printing area according to the printing parameters;

[0119] a power weight determination module 820, configured to determine a power weight of each light source for each printing area based on a distance between each light source and each printing area;

[0120] The output power determination module 830 is configured to determine the output power of each light source according to the power weight of each light source for each printing area and the amount of printed ink in each printing area.

[0121] In addition, the power adjustment method of the UV lamp in the above embodiment can be implemented by a printing device. Figure 9 A schematic diagram of the hardware structure of a printing device provided by an embodiment of the present invention is shown.

[0122] Printing device 900 may include a processor and a memory storing computer program instructions.

[0123] Specifically, the processor may include a central processing unit (CPU), or an application-specific integrated circuit (ASIC), or may be configured to implement one or more integrated circuits of the embodiment of the present invention.

[0124] The memory may include a large capacity memory for data or instructions. By way of example and not limitation, the memory may include a hard disk drive (HDD), a floppy disk drive, a flash memory, an optical disk, a magneto-optical disk, a magnetic tape, or a universal serial bus (USB) drive, or a combination of two or more of these. Where appropriate, the memory may include a removable or non-removable (or fixed) medium. Where appropriate, the memory may be inside or outside the data processing device. In a specific embodiment, the memory is a non-volatile solid-state memory. In a specific embodiment, the memory includes a 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 a flash memory, or a combination of two or more of these.

[0125] The processor implements any one of the UV lamp power adjustment methods in the above embodiments by reading and executing computer program instructions stored in the memory.

[0126] In one example, the printing device may further include a communication interface and a bus. Figure 9 As shown, the processor, memory, and communication interface are connected via a bus and communicate with each other.

[0127] The communication interface is mainly used to implement communication between the modules, devices, units and / or equipment in the embodiments of the present invention.

[0128] Bus comprises hardware, software or both, couples the parts of printing device to each other.For example, and not limitation, bus can comprise accelerated graphics port (AGP) or other graphics bus, enhanced industry standard architecture (EISA) bus, front side bus (FSB), hypertransport (HT) interconnection, industry standard architecture (ISA) bus, infinite bandwidth interconnection, low pin count (LPC) bus, memory bus, micro channel architecture (MCA) bus, peripheral component interconnection (PCI) bus, PCI-Express (PCI-X) bus, serial advanced technology attachment (SATA) bus, video electronics standard association local (VLB) bus or other suitable bus or two or more of these combinations.In suitable cases, bus can comprise one or more buses.Although the embodiment of the present invention describes and shows specific bus, the present invention considers any suitable bus or interconnection.

[0129] In addition, in conjunction with the UV lamp power adjustment method in the above embodiments, embodiments of the present invention may provide a computer-readable storage medium for implementation. The computer-readable storage medium stores computer program instructions; when the computer program instructions are executed by a processor, any of the UV lamp power adjustment methods in the above embodiments is implemented.

[0130] It should be understood that the present invention is not limited to the specific configurations and processes described above and illustrated in the figures. For the sake of brevity, a detailed description of known methods is omitted. In the above embodiments, several specific steps are described and illustrated as examples. However, the method of the present invention is not limited to the specific steps described and illustrated. Those skilled in the art may make various changes, modifications, and additions, or change the order of the steps after understanding the spirit of the present invention.

[0131] The functional blocks shown in the above-described block diagram can be implemented as hardware, software, firmware or a combination thereof. When implemented in hardware, it can be, for example, an electronic circuit, an application specific integrated circuit (ASIC), appropriate firmware, a plug-in unit, a function card or the like. When implemented in software, the elements of the present invention are programs or code segments that are used to perform the required tasks. The program or code segment can be stored in a machine-readable medium, or transmitted on a transmission medium or a communication link by a data signal 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, ROMs, flash memories, erasable ROMs (EROMs), floppy disks, CD-ROMs, optical disks, hard disks, optical fiber media, radio frequency (RF) links, etc. The code segment can be downloaded via a computer network such as the Internet, an intranet, etc.

[0132] It should also be noted that the exemplary embodiments described herein describe methods or systems based on a series of steps or devices. However, the present invention is not limited to the order of the steps described above. In other words, the steps may be performed in the order described in the embodiments, or in a different order, or several steps may be performed simultaneously.

[0133] The above description is only a specific embodiment of the present invention. Those skilled in the art will clearly understand that for the convenience and brevity of description, the specific working processes of the systems, modules and units described above can refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here. It should be understood that the protection scope of the present invention is not limited to this. Any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should be included in the protection scope of the present invention.

Claims

1. A method for adjusting the power of a UV lamp based on distance, wherein the UV lamp comprises a plurality of light sources and is used to irradiate at least one printing area, characterized in that: The method comprises: S10: Obtaining printing parameters, and determining the amount of printed ink for each printing area based on the printing parameters, including: the printing parameters include one or more of image dot matrix data, printing mode, feather height, and step distance; when single-scan printing is performed, the amount of printed ink for each printing area is determined based on the ink output of each nozzle and the correspondence between each nozzle in the printhead and the printing area, wherein the ink output of each nozzle is determined by the image dot matrix data and feather height; when multiple-scan printing is performed, the printed ink amount is the cumulative amount of printed ink after multiple scans and printing of each printing area; Alternatively, fitting processing is performed on the printing ink volume of each printing area to obtain a fitting curve or a fitting straight line; and the printing ink volume of each printing area is re-determined based on the fitting curve or the fitting straight line; S20: determining a power weight of each light source for each printing area according to a distance between each light source and each printing area; S30: determining the output power of each light source according to the power weight of each light source for each printing area and the amount of printing ink in each printing area; Among them, in S20, it also includes: S24: Obtaining a distance threshold; S25: comparing the distance between each light source and each printing area with the distance threshold; S26: If the distance between the light source and the printing area is less than the distance threshold, the power weight is determined according to the distance; if the distance between the light source and the printing area is greater than or equal to the distance threshold, the step of determining the power weight according to the distance is skipped.

2. The method according to claim 1, characterized in that Steps S24 to S25 are replaced by the following steps: S21: Get weight threshold; S22: Compare the power weight with the weight threshold; S23: Adjust the power weight that is less than or equal to the weight threshold to zero.

3. The method according to claim 1 or 2, characterized in that The UV lamp includes n light sources, and the UV lamp is used to irradiate m printing areas, where n and m are both positive integers. In S20, the power weight satisfies a first conversion formula, which is: in, represents the power weight of the j-th light source for the i-th printing area, Represents the distance between the j-th light source and the i-th printing area, where A and k are both positive real numbers, 1≤k, i and j are both positive integers, 1≤i≤m, 1≤j≤n.

4. The method according to claim 3, characterized in that The S20 includes: According to the and stated A one-to-one mapping relationship is established to establish a lookup table; The distance between each light source and each printing area is obtained, and the distance is used as an index to search the lookup table to obtain the corresponding power weight.

5. The method according to claim 1 or 2, characterized in that The UV lamp includes n light sources, and the UV lamp is used to irradiate m printing areas, where n and m are both positive integers. In S30, the output power of the light source satisfies a second conversion formula, which is: in, represents the output power of the j-th light source, Indicates the amount of printing ink in the i-th printing area, It represents the power weight of the j-th light source for the i-th printing area, where i and j are both positive integers, 1≤i≤m, 1≤j≤n.

6. The method according to claim 1 or 2, characterized in that The UV lamp includes n light sources, where n is a positive integer. In S30, the output power of the light sources satisfies a third conversion formula, which is: in, represents the output power of the j-th light source, represents the amount of printing ink in the printing area closest to the jth light source, It represents the power weight of the j-th light source for the printing area closest to it, where j is a positive integer, 1≤j≤n.

7. A distance-based UV lamp power adjustment device, wherein the UV lamp includes multiple light sources and is used to irradiate at least one printing area, characterized in that: The device comprises: A printing ink volume determination module, the printing ink volume determination module being configured to obtain printing parameters and determine the printing ink volume of each printing area based on the printing parameters, including: the printing parameters including one or more of image dot matrix data, printing mode, feather height, and step distance; when single-scan printing is performed, the printing ink volume of each printing area is determined based on the printing mode and the ink output of each nozzle, as well as the correspondence between each nozzle in the printhead and the printing area, wherein the ink output of each nozzle is determined by the image dot matrix data and feather height; when multiple-scan printing is performed, the printing ink volume is the cumulative printing ink volume after multiple scans and printing of each printing area; or, fitting the printing ink volume of each printing area to obtain a fitting curve or a fitting line; and re-determining the printing ink volume of each printing area based on the fitting curve or the fitting line; A power weight determination module, the power weight determination module is used to determine the power weight of each light source for each printing area based on the distance between each light source and each printing area; and further includes: obtaining a distance threshold; comparing the distance between each light source and each printing area with the distance threshold; if the distance between the light source and the printing area is less than the distance threshold, determining the power weight based on the distance; if the distance between the light source and the printing area is greater than or equal to the distance threshold, skipping the step of determining the power weight based on the distance; An output power determination module is configured to determine the output power of each light source according to a power weight of each light source for each printing area and an amount of printed ink in each printing area.

8. A printing device, characterized in that: The printing device comprises at least one processor, at least one memory, and computer program instructions stored in the memory, and when the computer program instructions are executed by the processor, the method according to any one of claims 1 to 6 is implemented.

9. A storage medium having computer program instructions stored thereon, characterized in that: When the computer program instructions are executed by a processor, the method according to any one of claims 1 to 6 is implemented.

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