CN114379256B - Method, device, equipment and storage medium for adjusting power of UV lamp - Google Patents
Method, device, equipment and storage medium for adjusting power of UV lamp Download PDFInfo
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- CN114379256B CN114379256B CN202011134722.8A CN202011134722A CN114379256B CN 114379256 B CN114379256 B CN 114379256B CN 202011134722 A CN202011134722 A CN 202011134722A CN 114379256 B CN114379256 B CN 114379256B
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- 238000000034 method Methods 0.000 title claims abstract description 58
- 238000003860 storage Methods 0.000 title claims abstract description 11
- 238000007639 printing Methods 0.000 claims abstract description 369
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J11/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
- B41J11/0015—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form for treating before, during or after printing or for uniform coating or laminating the copy material before or after printing
- B41J11/002—Curing or drying the ink on the copy materials, e.g. by heating or irradiating
- B41J11/0021—Curing or drying the ink on the copy materials, e.g. by heating or irradiating using irradiation
- B41J11/00212—Controlling the irradiation means, e.g. image-based controlling of the irradiation zone or control of the duration or intensity of the irradiation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J11/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
- B41J11/0015—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form for treating before, during or after printing or for uniform coating or laminating the copy material before or after printing
- B41J11/002—Curing or drying the ink on the copy materials, e.g. by heating or irradiating
- B41J11/0021—Curing or drying the ink on the copy materials, e.g. by heating or irradiating using irradiation
- B41J11/00214—Curing or drying the ink on the copy materials, e.g. by heating or irradiating using irradiation using UV radiation
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Abstract
The invention belongs to the technical field of printing, and particularly provides a power adjusting method, device and equipment of a UV lamp and a storage medium. The method comprises the following steps: determining the amount of printing ink of each printing area; determining the power weight of each light source for each printing area; the output power of the light source is determined based on the amount of ink printed for each print zone and the power weight of each light source for each print zone. The device comprises: a printing ink amount determining module; a power weight determining module; and an output power determining module. According to the embodiment of the invention, the output power of the light source is determined through the printing ink quantity of 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 printing ink quantity of each printing area and the distance between the light source and each printing area, the curing degree of the ink of each printing area can be maximally close to the ideal degree, the curing channel is restrained, and the quality of a printed product is improved.
Description
Technical Field
The present invention relates to the field of printing technologies, and in particular, to a method, an apparatus, a device, and a storage medium for adjusting power of a UV lamp.
Background
The UV printer (Ultraviolet LED Inkjet Printer) adopts UV (Ultraviolet, UV for short) to print, UV ink is solidified under the Ultraviolet radiation emitted by a UV lamp, the obtained printed matter has clean layout, saturated color, exquisite image and high glossiness, is particularly suitable for high-speed printing, and has good adsorption performance and mechanical performance on various printing media. UV printing is therefore widely used today.
In the prior art, UV light is generally used to radiate UV ink on a printing medium in an indiscriminate manner, that is, all light sources on the UV light radiate UV ink on the whole printing medium with the same power, but due to different amounts of ink in each printing area on the printing medium, the technical scheme of indiscriminate irradiation causes different curing degrees of UV ink, thereby causing uneven image quality on the printing medium, that is, the technical problem of curing channels.
Disclosure of Invention
In view of the above, the embodiments of the present invention provide a method, an apparatus, a device and a storage medium for adjusting power of a UV lamp, so as to solve the technical problem of curing channels in the prior art to a certain extent.
In a first aspect, an embodiment of the present invention provides a method for adjusting power of a UV lamp, the UV lamp including a plurality of light sources, the UV lamp being configured to illuminate at least 1 print area, the method comprising:
s10: acquiring printing parameters, and determining the printing ink quantity of each printing area according to the printing parameters;
s20: determining the power weight of each light source for each printing area according to the distance between each light source and each printing area;
s30: and determining the output power of each light source according to the power weight of each light source for each printing area and the printing ink quantity of each printing area.
According to the embodiment of the invention, the printing ink quantity of each printing area is determined through the printing parameters, the power weight of the light source for the printing area is determined according to the distance between the light source and the printing area, and finally the output power of each light source is determined according to the printing ink quantity and the power weight. Because the printing ink amounts of all the printing areas are different, the output power of each light source of the UV lamp is adjusted according to the printing ink amounts of all the printing areas, and different output powers are adopted to cure the printing areas with different printing ink amounts in the curing process, so that the output power of each light source of the UV lamp can be mutually matched with the printing ink amounts of all the printing areas even though the printing ink amounts of all the printing areas are different, and each printing area is accurately cured, so that the curing degree of the printing ink of each printing area can be maximally close to the ideal degree, the curing channel is restrained, and the quality of a printing product is greatly improved. In addition, because the distances between the light sources and the printing areas are different, the output power of each light source of the UV lamp is adjusted according to the distance between each light source and the printing area, and different output powers are adopted to cure the printing areas with different distances from the light sources in the curing process, so that the output power of each light source of the UV lamp can be matched with the distance between each printing area and the light source even though the distances between the light sources and the printing areas are different, and each printing area can be accurately cured, so that the curing degree of the ink of each printing area can be maximally close to the ideal degree, the curing channel is restrained, and the quality of a printed product is greatly improved.
Preferably, in S20, further comprising:
s21: acquiring a weight threshold value;
s22: comparing the power weight with the weight threshold;
s23: and adjusting the power weight less than or equal to the weight threshold to zero.
As described above, according to the difference in the distance between the light source and the print area, the power weight of the light source to the print area is different, in general, the further the distance between the light source and a certain print area is, the smaller the power weight of the light source to the print area is, when the power weight is less than or equal to the weight threshold, the further the distance between the print area and the light source is considered, that is, when curing, the radiation effect of the light source to the print area is weak, and when determining the output power by introducing the print area, the obtained output power has a larger error to other print areas. Therefore, in order to avoid that the printing area greatly influences the determination of the output power of the light source, the embodiment of the invention compares the power weight with the weight threshold value and adjusts the power weight smaller than or equal to the weight threshold value to zero, so that the printing area is not introduced to determine the output power of the light source, and the error of the output power relative to other printing areas is reduced.
Preferably, in S20, further comprising:
s24: acquiring 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 smaller than the distance threshold value, determining the power weight according to the distance; and if the distance between the light source and the printing area is greater than or equal to the distance threshold value, skipping the step of determining the power weight according to the distance.
As described above, if the radiation effect of the light source on the print area is weak when the distance between the print area and the light source is long, if the determination of the output power is performed by introducing the print area, the determination of the obtained output power has a large error for other print areas. Therefore, the embodiment of the invention compares the distance between the light source and the printing area with the distance threshold value, and skips the step of determining the power weight according to the distance when the distance between the light source and the printing area is larger than or equal to the distance threshold value, so that the printing area is not introduced to determine the output power of the light source, and the error of the output power relative to other printing areas is reduced. Meanwhile, the flow of determining the power weight by the distance is reduced, and the efficiency is improved.
Preferably, the UV lamp includes n light sources, the UV lamp is used for illuminating m printing areas, n and m are both positive integers, and in S20, the power weight satisfies a first conversion formula, the first conversion formula is:
wherein W is ij Represents the power weight, d, of the jth light source for the ith print zone ij The distance between the jth light source and the ith printing area is represented, A and k are positive real numbers, k is equal to or less than 1, i and j are positive integers, i is equal to or less than 1 and less than or equal to m, and j is equal to or less than 1 and less than or equal to n.
According to the embodiment of the invention, the power weight is determined by the distance between the light source and the printing area through the first conversion formula, so that different distances are ensured to correspond to different power weights, and in subsequent processing, the obtained output power is determined by the power weight to have more accurate adaptation degree to the distance between the light source and the printing area, so that the curing channel is further restrained, and the printing effect is improved.
Preferably, the UV lamp includes n light sources, the UV lamp is used for illuminating m printing areas, n and m are both positive integers, and in S30, the output power of the light sources satisfies a second conversion formula, where the second conversion formula is:
wherein P is j Represents the output power of the jth light source, D i Representing the printing ink quantity of the ith printing area, W ij The power weight of the jth light source to the ith printing area is represented, i and j are positive integers, i is more than or equal to 1 and less than or equal to m, and j is more than or equal to 1 and less than or equal to n.
According to the embodiment of the invention, through the second conversion formula, the output power of the light source is determined according to the power weight of the light source for m printing areas and the printing ink quantity of the m printing areas, so that the output power of the light source is determined by the m printing areas (when the power weight of the light source for the m printing areas is not 0), the output power of the light source can be well matched with the m printing areas, the curing channel is further restrained, and the printing effect is improved.
Preferably, the UV lamp includes n light sources, n is a positive integer, and in S30, the output power of the light sources satisfies a third conversion formula, where the third conversion formula is:
P j ＝D j_near *W j_near
wherein P is j Represents the output power of the jth light source, D j_near Representing the amount of ink printed in the print area nearest to the jth light source, W j_near The power weight of the j-th light source for the printing area nearest to the j-th light source is represented, j is a positive integer, and j is more than or equal to 1 and less than or equal to n.
As previously mentioned, the light source radiates the most strongly to the printing area nearest to it when curing. In other words, the curing effect of a certain print area is mainly dependent on the output power of the light source nearest to it. Therefore, the embodiment of the invention determines the output power of the light source according to the third conversion formula by the printing area closest to the light source, so that the output power of each light source is determined by the printing area closest to the light source, the output power of each light source is better adapted to the printing ink quantity of the printing area closest to the light source, the solidification degree of the ink of each printing area can be maximally close to the ideal degree, the solidification channel is restrained, and the quality of the printed product is greatly improved.
Preferably, in S10, it includes:
s11: fitting the printing ink quantity of each printing area to obtain a fitting curve or a fitting straight line;
s12: and re-determining the printing ink quantity of each printing area according to the fitting curve or the fitting straight line.
When the difference of printing ink quantity in adjacent printing areas is large, a curing channel is easy to exist during curing, in the embodiment of the invention, a fitting curve or a fitting straight line is obtained by fitting the printing ink quantity in each printing area, the printing ink quantity in each printing area is redetermined according to the fitting curve or the fitting straight line, in the subsequent processing, the output power is determined according to the redetermined printing ink quantity, so that the determined output power can be well adapted to different printing areas with large printing ink quantity difference, the curing channel is further restrained, and the printing effect is improved.
In a second aspect, an embodiment of the present invention provides a power adjustment device for a UV lamp including a plurality of light sources, the UV lamp being for illuminating at least 1 print area, the device comprising:
the printing ink quantity determining module is used for acquiring printing parameters and determining the printing ink quantity of each printing area according to the printing parameters;
the power weight determining module is used for determining the power weight of each light source for each printing area according to the distance between each light source and each printing area;
and the output power determining module is used for determining the output power of each light source according to the power weight of each light source for each printing area and the printing ink quantity of each printing area.
In a third aspect, embodiments of the present invention provide a printing apparatus further comprising at least one processor, at least one memory and computer program instructions stored in the memory, which when executed by the processor, implement any of the methods of the first aspect described above.
In a fourth aspect, an embodiment of the present invention provides a storage medium having stored thereon computer program instructions which, when executed by a processor, implement any of the methods of the first aspect described above.
Drawings
In order to more clearly illustrate the technical solution of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described, and it is within the scope of the present invention to obtain other drawings according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of curing ink on a printing medium according to an embodiment of the present invention.
Fig. 2 is a schematic flow chart of a power adjustment method of a UV lamp according to an embodiment of the invention.
Fig. 3A is a schematic diagram of determining the amount of printing ink provided by an embodiment of the present invention.
Fig. 3B is a schematic diagram of another determination of the amount of printing ink provided by an embodiment of the present invention.
Fig. 4 is a flowchart of a method for determining a power weight according to an embodiment of the present invention.
Fig. 5 is a flowchart of another method for determining a power weight according to an embodiment of the present invention.
Fig. 6 is a flowchart of a method for determining a printing ink amount according to an embodiment of the present invention.
Fig. 7A is a schematic diagram of a straight line fitting of the amount of printing ink according to an embodiment of the present invention.
Fig. 7B is a schematic diagram of curve fitting the amount of printing ink according to an embodiment of the present invention.
Fig. 8 is a schematic structural diagram of a power adjusting device of a UV lamp according to an embodiment of the present invention.
Fig. 9 is a schematic structural view of a printing apparatus according to an embodiment of the present invention.
Detailed Description
Features and exemplary embodiments of various aspects of the present invention will be described in detail below, and in order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely configured to illustrate the invention and are not configured to limit the invention. It will be apparent to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the invention by showing examples of the invention.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises the element.
It should be noted that, in this document, the terms "UV ink", "ink" and "gloss oil" may be used interchangeably in general. The words "irradiating", "irradiating" and the like may also be used interchangeably in general.
Referring to fig. 1, a schematic diagram of UV lamp curing ink on multiple print zones is shown.
The printing medium 120 includes a plurality of printing areas, namely, a printing area 1, a printing area 2, and a printing area 3.
The head 130 is used to eject ink on the print medium 120, and the head 130 includes 9 nozzles, which are numbered in their height direction (i.e., the top-to-bottom direction shown in fig. 1) for ease of description. Wherein, the No. 1-3 nozzles spray ink in the printing area 1, the No. 4-6 nozzles spray ink in the printing area 2, and the No. 7-9 nozzles spray ink in the printing area 3.
The UV lamp 110 includes a plurality of light sources, respectively, a light source 1, a light source 2, a light source 3, and a light source 4. The 4 light sources are used to emit light of a characteristic wavelength (typically invisible light, such as ultraviolet light) to radiate ink on the print medium 120 to achieve the technical effect of photo-oil curing.
In most application scenarios, the amounts of the printing ink in the printing area 1, the printing area 2 and the printing area 3 are not equal, but the prior art adopts an indiscriminate irradiation mode to uniformly radiate the 3 printing areas, that is, the light source 1, the light source 2, the light source 3 and the light source 4 radiate the 3 printing areas with equal output power, which causes the technical problem that the curing degrees of the printing ink in the 3 printing areas are different, so that the printing image quality on the printing medium 120 is uneven, that is, curing channels exist. Meanwhile, the prior art generally drives the UV lamp at maximum output power, and the energy consumption is large.
In order to solve the technical problem of the curing tunnel to a certain extent, the invention provides a power adjusting method, a device, equipment and a storage medium of a UV lamp.
Fig. 2 is a flowchart of a method for adjusting power of a UV lamp according to an embodiment of the invention, which includes the following steps.
S10: acquiring printing parameters, and determining the printing ink quantity of each printing area according to the printing parameters;
s20: determining the power weight of each light source for each printing area according to the distance between each light source and each printing area;
s30: and determining the output power of each light source according to the power weight of each light source for each printing area and the printing ink quantity of each printing area.
Wherein the UV lamp comprises a plurality of light sources for illuminating at least 1 print area.
The printing parameters include one or more of image dot matrix data, printing mode, feathering height, step distance.
The print modes include Onepass print mode, multiple Pass scan print mode, and single Pass scan print mode.
The multiple Pass scan printing means that each unit of the printed image is subjected to multiple interpolation to complete the printing, each unit is composed of multiple pixel points, for example, if the multiple Pass scan printing is performed, each unit is composed of 2 pixel points, and if the multiple Pass scan printing is performed, each unit is composed of 3 pixel points. The multi Pass scanning printing has low efficiency and small yield, but the cost is low, and the multi Pass scanning printing device is suitable for small-batch intermittent production. Wide width printed products are realized by spray head splicing or continuous multipass printing. The multiple Pass printing mode is divided according to the number of Pass times of the same area nozzle, for example, the 2Pass printing mode requiring 2 passes to complete printing, the 4Pass printing mode requiring 4 passes to complete printing, etc.
Single Pass scan printing refers to printing of an image with only one scan per unit of the image.
Onepass printing refers to that a plurality of spray heads are used for scanning side by side, so that a printed image is printed at one time. The Onepasts printing has the advantages of high efficiency and large yield, and is suitable for a mass and continuous production mode.
The term "one-pass printing" used herein refers to one-pass printing by a head, unless otherwise specified. For example, in the 4Pass printing mode, the printing of the 1 st Pass or the printing process of the 2 nd Pass is a single scan printing process. In the case of Onepass printing, single scan printing means that the head finishes the process of printing an image in one scan.
The inkjet head ejects ink onto a print medium while moving in a scanning direction (generally orthogonal to the direction of the height of the inkjet head) during a single scan printing process to form a corresponding print image. Therefore, the printing ink quantity of each printing area can be determined according to the printing mode, the ink quantity of each nozzle and the corresponding relation between each nozzle in the spray head and the printing area. Wherein the ink output of each nozzle can be determined by the image dot matrix data. In particular, if the feathering process is also performed, the ink discharge amount of each nozzle can be determined based on the image dot matrix data and the feathering height. The printing ink quantity of the printing area in the embodiment of the invention refers to the average printing ink quantity of the printing area.
For ease of understanding, referring to fig. 3A, the spray head 130 includes 9 nozzles in total, which are respectively denoted as nozzles 1 to 9 in the order from top to bottom in fig. 3A. In the single scanning printing, the ink discharge amounts of the nozzle No. 1 to the nozzle No. 9 are Y1, Y2, …, Y9, respectively.
As described above, nozzles No. 1 to 3 jet ink on the printing area 1, nozzles No. 4 to 6 jet ink on the printing area 2, and nozzles No. 7 to 9 jet ink on the printing area 3. Therefore, the printing ink amount of the printing area 1 is
The printing ink quantity of the printing area 2 is +.>
The printing ink quantity of the printing area 3 is +.>
In the embodiment of the present invention, if 1 print area is printed by only 1 nozzle to perform ink ejection, the amount of ink printed in the print area is equal to the amount of ink output from the nozzle.
In another embodiment of the present invention, there is also provided, inter alia, another method of determining the amount of printing ink in a multiple Pass print scan mode. Referring to fig. 3B, in the multiple Pass scan printing mode, the head steps PassH, which represents the step distance, each time in the vertically downward direction in fig. 3B. When 3Pass printing is performed, the printing region 1 includes ink of 1Pass printing, ink of 2Pass printing, and ink of 3Pass printing. Therefore, the printing ink amount of the printing area 1 is
The printing ink quantity of the printing area 2 is +.>
The printing ink quantity of the printing area 3 is +.>
In the present embodiment, the printing ink amount is the accumulated printing ink amount of the printing area, so that the amount of the ink of the multiple interpolation of the multiple Pass is taken into consideration to improve the degree of adaptation of the output power to the printing ink amount in the subsequent processing.
The distance between the light source and the printing area refers to the distance between the center position of the light source and the center position of the printing area. In another embodiment of the present invention, the distance between the light source and the printing area may be the shortest distance between the light source and the printing area. In other embodiments of the invention, the distance between the light source and the print zone may be the distance between any point of the light source and any point of the print zone.
In S20, the distances between the light sources and the printing areas are different, and the different distances correspond to different power weights, and the power weights are positive real numbers. In one embodiment of the invention, the power weight is less than or equal to 1. In a preferred embodiment of the invention, the distance between the light source and the print area is inversely proportional to the power weight, i.e. the greater the distance the smaller the power weight.
Accordingly, the output power of each light source can be determined based on the power weight of the light source with respect to each print area and the amount of ink printed in each print area, respectively. In one embodiment, the output power of any one light source is equal to the sum of the product of the amount of printing ink of i of all the printing areas and the power weight of that light source for the i printing areas. Taking 3 printing areas as an example, i is equal to or greater than 1 and equal to or less than 3, wherein i is a positive integer. For example, the output power of the light source 1 is equal to the product of the power weight of the light source 1 to the printing area 1 and the amount of printing ink of the printing area 1. Alternatively, the output power of the light source 2 is equal to the sum of the product of the power weight of the light source 2 to the printing area 2 and the amount of printing ink of the printing area 2 and the product of the power weight of the light source 2 to the printing area 3 and the amount of printing ink of the printing area 3. Alternatively, the output power of the light source 3 is equal to the sum of the product of the power weight of the light source 3 for the printing area 1 and the amount of printing ink of the printing area 1, the product of the power weight of the light source 3 for the printing area 2 and the amount of printing ink of the printing area 2, and the product of the power weight of the light source 3 for the printing area 3 and the amount of printing ink of the printing area 3.
According to the embodiment of the invention, the printing ink quantity of each printing area is determined through the printing parameters, the power weight of the light source for the printing area is determined according to the distance between the light source and the printing area, and finally the output power of each light source is determined according to the printing ink quantity and the power weight. Because the printing ink amounts of all the printing areas are different, the output power of each light source of the UV lamp is adjusted according to the printing ink amounts of all the printing areas, and different output powers are adopted to cure the printing areas with different printing ink amounts in the curing process, so that the output power of each light source of the UV lamp can be mutually matched with the printing ink amounts of all the printing areas even though the printing ink amounts of all the printing areas are different, and each printing area is accurately cured, so that the curing degree of the printing ink of each printing area can be maximally close to the ideal degree, the curing channel is restrained, and the quality of a printing product is greatly improved. In addition, because the distances between the light sources and the printing areas are different, the output power of each light source of the UV lamp is adjusted according to the distance between each light source and the printing area, and different output powers are adopted to cure the printing areas with different distances from the light sources in the curing process, so that the output power of each light source of the UV lamp can be matched with the distance between each printing area and the light source even though the distances between the light sources and the printing areas are different, and each printing area can be accurately cured, so that the curing degree of the ink of each printing area can be maximally close to the ideal degree, the curing channel is restrained, and the quality of a printed product is greatly improved.
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 positive integers, and in the foregoing step S20: determining the power weight of each light source for each printing area according to the distance between each light source and each printing area, wherein the power weight meets a first conversion formula, and the first conversion formula is as follows:
wherein W is ij Represents the power weight, d, of the jth light source for the ith print zone ij The distance between the jth light source and the ith printing area is represented, A and k are positive real numbers, i and j are positive integers, 1-k, 1-i-m, 1-j-n.
For ease of understanding, please continue to refer to fig. 1, taking light source 1 and print area 1 as examples, the power weight of light source 1 to print area 1 is:
wherein W is 11 Represents the power weight of the light source 1 to the print area 1, d 11 Indicating the distance between the light source 1 and the print area 1.
Wherein the values of a and k may be different due to differences in ink, print media, UV lamps, etc. Thus, the optimal values of a and k can be determined by printing a large number of test images based on a particular ink, a particular print medium, and a particular UV lamp, and continuously optimized over successive iterations of the product.
For example, a number of test images are obtained by the method described above, each corresponding to a particular set of values for a and k. Machine learning is performed on an integrated circuit (e.g., TPU, GPU, FPGA) with training functions using the test image as a sample to obtain a specific model. And then, based on an integrated circuit with an inference function, taking the image to be printed as the input of the model, and obtaining the values of A and k through inference.
In another embodiment of the present invention, d may be ij And W is ij A Look-Up-Table (LUT) is established. In the field of industrial printing, the distance between the individual light sources and the printing area is usually fixed. Therefore, the distance d between each light source and the printing area can be pre-determined ij Calculating to obtain corresponding power weight W ij And establishing a database or a lookup table according to the one-to-one correspondence.
Therefore, the aforementioned S20 can be simplified as: and according to the distance between each light source and each printing area, searching the database or the lookup table by taking the distance as an index to obtain the corresponding power weight. In this embodiment, the power weights are prevented from being operated every time, and the corresponding power weights are directly extracted from the database or the lookup table, so that the efficiency is improved.
In another embodiment of the present invention, the UV lamp includes n light sources, the UV lamp is used for illuminating m print areas, n and m are positive integers, and in S30, the output power of the light sources satisfies a second conversion formula, where the second conversion formula is:
wherein P is j Represents the output power of the jth light source, D i Representing the amount of printing ink of the ith printing area，W ij The power weight of the jth light source to the ith printing area is represented, i and j are positive integers, i is more than or equal to 1 and less than or equal to m, and j is more than or equal to 1 and less than or equal to n.
As previously described, W ij Either through a first conversion formula or through a look-up table or database. Thus, the output power of each light source can be determined by the second conversion formula.
For ease of understanding, please continue to refer to fig. 1, taking the light source 1 as an example, its output power is:
wherein P is 1 Indicating the output power of the light source 1, W 11 Representing the power weight, W, of the light source 1 for the print zone 1 21 Representing the power weight, W, of the light source 1 for the print zone 2 31 The power weight of the light source 1 for the print zone 3 is indicated.
In another embodiment of the present invention, the UV lamp includes n light sources, n is a positive integer, and in S30, the output power of the light sources satisfies a third conversion formula, where the third conversion formula is:
P j ＝D j_near *W j_near
wherein P is j Represents the output power of the jth light source, D j_near Representing the amount of ink printed in the print area nearest to the jth light source, W j_near The power weight of the j-th light source for the printing area nearest to the j-th light source is represented, j is a positive integer, and j is more than or equal to 1 and less than or equal to n.
For ease of understanding, please continue to refer to fig. 1, taking the light source 1 as an example, the printing area closest to the light source 1 is the printing area 1, and the amount of printing ink in the printing area 1 is
The power weight of the light source 1 to the printing area 1 is W 1_near The output power of the light source 1>
In another embodiment of the present invention, referring to fig. 4, in S20, the method further includes:
s21: acquiring a weight threshold value;
s22: comparing the power weight with the weight threshold;
s23: and adjusting the power weight less than or equal to the weight threshold to zero.
For example, in the foregoing embodiment, W 31 Less than the weight threshold, then W will be 31 The value of (2) is set to 0, the output power of the light source 1 is defined by:
the conversion is as follows: />
In another embodiment of the present invention, referring to fig. 5, in S20, the method further includes:
s24: acquiring 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 smaller than the distance threshold value, determining the power weight according to the distance; and if the distance between the light source and the printing area is greater than or equal to the distance threshold value, skipping the step of determining the power weight according to the distance.
For example, in the foregoing example, the distance d between the light source 1 and the printing region 3 31 Greater than the distance threshold, skip by d 31 Calculating or searching to obtain W 31 Is carried out by a method comprising the steps of. Correspondingly, W 31 Zero or null. Therefore, the output power of the light source 1 is defined by:
the conversion is as follows:
in another embodiment of the present invention, referring to fig. 6, in S10, the method includes:
s11: fitting the printing ink quantity of each printing area to obtain a fitting curve or a fitting straight line;
s12: and re-determining the printing ink quantity of each printing area according to the fitting curve or the fitting straight line.
Fig. 7A is a schematic diagram of a fitting process for printing ink amounts of a plurality of printing areas according to an embodiment of the present invention.
The printing area 1 is ejected by nozzles 1 to 3, the printing area 2 is ejected by nozzles 4 to 6, and the printing area 3 is ejected by nozzles 7 to 9. As described above, the ink output amounts of the nozzles 1 to 9 are Y1, Y2, …, and Y9, respectively, and as shown in fig. 7A, the ink output amounts of the nozzles 9 are subjected to straight line fitting to obtain a fitting straight line, the midpoint of the printing area 1 is used as the coordinate value in the height direction of the head, and the value of the fitting straight line corresponding to the fitting straight line is used as the printing ink amount of the printing area 1. Similarly, the middle point of the printing area 2 is used as the coordinate value of the height direction of the nozzle, and the value of the fitting straight line corresponding to the coordinate value is used as the printing ink quantity of the printing area 2. The middle point of the printing area 3 is used as the coordinate value of the height direction of the spray head, and the value of the corresponding fitting straight line is used as the printing ink quantity of the printing area 3.
Fig. 7B is a schematic diagram of another fitting process for the amounts of printing ink of a plurality of printing areas according to an embodiment of the present invention. As described above, the ink output amounts of the nozzles 1 to 9 are Y1, Y2, …, and Y9, respectively, and as shown in fig. 7A, curve fitting is performed on the ink output amounts of the nozzles 9 to obtain a fitted curve. The middle point of the printing area 1 is used as the coordinate value of the height direction of the spray head, and the corresponding fitting curve value is used as the printing ink quantity of the printing area 1. Similarly, the middle point of the printing area 2 is used as the coordinate value of the height direction of the spray head, and the corresponding fitting curve value is used as the printing ink quantity of the printing area 2. The middle point of the printing area 3 is used as the coordinate value of the height direction of the spray head, and the corresponding fitting curve value is used as the printing ink quantity of the printing area 3.
An embodiment of the present invention further provides a power adjustment device for a UV lamp, please refer to fig. 8, which is a schematic structural diagram of the power adjustment device for a UV lamp provided in the embodiment of the present invention, where the UV lamp includes a plurality of light sources, and the UV lamp is used for illuminating at least 1 printing area, and the device includes:
a printing ink amount determining module 810, wherein the printing ink amount determining module 810 is configured to obtain a printing parameter, and determine a printing ink amount of each printing area according to the printing parameter;
a power weight determining module 820, where the power weight determining module 820 is configured to determine a power weight of each light source for each printing area according to a distance between each light source and each printing area;
and an output power determining module 830, where the output power determining module 830 is configured to determine an output power of each light source according to a power weight of each light source for each printing area and an amount of printing ink of each printing area.
In addition, the power adjustment method of the UV lamp of the above embodiment may be implemented by a printing apparatus. Fig. 9 shows a schematic hardware configuration of a printing apparatus according to an embodiment of the present invention.
The printing device 900 can include a processor and memory storing computer program instructions.
In particular, the processor may comprise a Central Processing Unit (CPU), or an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), or may be configured as one or more integrated circuits that implement embodiments of the present invention.
The memory may include mass storage for data or instructions. By way of example, and not limitation, the memory may comprise a Hard Disk Drive (HDD), floppy Disk Drive, flash memory, optical Disk, magneto-optical Disk, magnetic tape, or universal serial bus (Universal Serial Bus, USB) Drive, or a combination of two or more of the foregoing. The memory may include removable or non-removable (or fixed) media, where appropriate. The memory may be internal or external to the data processing apparatus, where appropriate. In a particular embodiment, the memory is a non-volatile solid state memory. In a particular embodiment, the memory includes Read Only Memory (ROM). The ROM may be mask programmed ROM, programmable ROM (PROM), erasable PROM (EPROM), electrically Erasable PROM (EEPROM), electrically rewritable ROM (EAROM), or flash memory, or a combination of two or more of these, where appropriate.
The processor reads and executes the computer program instructions stored in the memory to implement the power adjustment method of any of the UV lamps of the above embodiments.
In one example, the printing device may also include a communication interface and a bus. The processor, the memory, and the communication interface are connected by a bus and complete communication with each other, as shown in fig. 9.
The communication interface is mainly used for realizing communication among the modules, the devices, the units and/or the equipment in the embodiment of the invention.
The bus includes hardware, software, or both, that couple components of the printing device to each other. By way of example, and not limitation, the buses may include an Accelerated Graphics Port (AGP) or other graphics bus, an Enhanced Industry Standard Architecture (EISA) bus, a Front Side Bus (FSB), a HyperTransport (HT) interconnect, an Industry Standard Architecture (ISA) bus, an infiniband interconnect, a Low Pin Count (LPC) bus, a memory bus, a micro channel 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 bus, or a combination of two or more of the above. The bus may include one or more buses, where appropriate. Although embodiments of the invention have been described and illustrated with respect to a particular bus, the invention contemplates any suitable bus or interconnect.
In addition, in combination with the power adjustment method of the UV lamp in the above embodiment, the embodiment of the invention may be implemented by providing a computer readable storage medium. The computer readable storage medium has stored thereon computer program instructions; the computer program instructions, when executed by a processor, implement a method of power adjustment of a UV lamp in any of the above embodiments.
It should be understood that the invention is not limited to the particular arrangements and instrumentality described above and shown in the drawings. For the sake of brevity, a detailed description of known methods is omitted here. In the above embodiments, several specific steps are described and shown as examples. However, the method processes of the present invention are not limited to the specific steps described and shown, and those skilled in the art can make various changes, modifications and additions, or change the order between steps, after appreciating the spirit of the present invention.
The functional blocks shown in the above-described structural block diagrams may be implemented in hardware, software, firmware, or a combination thereof. When implemented in hardware, it may be, for example, an electronic circuit, an Application Specific Integrated Circuit (ASIC), suitable firmware, a plug-in, a function card, or the like. When implemented in software, the elements of the invention are the programs or code segments used to perform the required tasks. The program or code segments may be stored in a machine readable medium or transmitted over transmission media or communication links by a data signal carried in a carrier wave. A "machine-readable medium" may include any medium that can store or transfer information. Examples of machine-readable media include electronic circuitry, semiconductor memory devices, ROM, flash memory, erasable ROM (EROM), floppy disks, CD-ROMs, optical disks, hard disks, fiber optic media, radio Frequency (RF) links, and the like. The code segments may be downloaded via computer networks such as the internet, intranets, etc.
It should also be noted that the exemplary embodiments mentioned in this disclosure describe some methods or systems based on a series of steps or devices. However, the present invention is not limited to the order of the above-described steps, that is, the steps may be performed in the order mentioned in the embodiments, or may be performed in a different order from the order in the embodiments, or several steps may be performed simultaneously.
In the foregoing, only the specific embodiments of the present invention are described, and it will be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working processes of the systems, modules and units described above may refer to the corresponding processes in the foregoing method embodiments, which are not repeated herein. It should be understood that the scope of the present invention is not limited thereto, and any equivalent modifications or substitutions can be easily made by those skilled in the art within the technical scope of the present invention, and they should be included in the scope of the present invention.
Claims (8)
1. A method of power adjustment of a UV lamp comprising a plurality of light sources for illuminating at least 1 print zone, the method comprising:
s10: acquiring printing parameters, and determining the printing ink quantity of each printing area according to the printing parameters;
s20: determining the power weight of each light source for each printing area according to the distance between each light source and each printing area;
s21: acquiring a weight threshold value;
s22: comparing the power weight with the weight threshold;
s23: adjusting the power weight less than or equal to the weight threshold to zero;
s24: acquiring 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 smaller than the distance threshold value, determining the power weight according to 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 according to the distance;
s30: and determining the output power of each light source according to the power weight of each light source for each printing area and the printing ink quantity of each printing area.
2. The method according to claim 1, wherein the UV lamp comprises n light sources, the UV lamp is used to illuminate m print areas, n and m are both positive integers, and in S20, the power weight satisfies a first conversion formula, the first conversion formula is:
wherein,,
representing the power weight of the jth light source for the ith print zone, +.>
The distance between the jth light source and the ith printing area is represented, A and k are positive real numbers, k is equal to or less than 1, i and j are positive integers, i is equal to or less than 1 and less than or equal to m, and j is equal to or less than 1 and less than or equal to n.
3. The method according to claim 1, wherein the UV lamp comprises n light sources for illuminating m print areas, n and m being positive integers, and the output power of the light sources satisfies a second conversion formula in S30, the second conversion formula being:
wherein,,
representing the output power of the jth light source, +.>
The printing ink quantity of the ith printing area is represented, the power weight of the jth light source to the ith printing area is represented, i and j are positive integers, i is more than or equal to 1 and less than or equal to m, and j is more than or equal to 1 and less than or equal to n.
4. The method according to claim 1, wherein the UV lamp comprises n light sources, n being a positive integer, the output power of the light sources satisfying a third conversion formula in S30, the third conversion formula being:
wherein,,
representing the output power of the jth light source, +.>
Representing the amount of ink printed in the print zone nearest to the jth light source, < >>
The power weight of the j-th light source for the printing area nearest to the j-th light source is represented, j is a positive integer, and j is more than or equal to 1 and less than or equal to n.
5. The method according to any one of claims 1 to 4, characterized in that in S10 it comprises:
s11: fitting the printing ink quantity of each printing area to obtain a fitting curve or a fitting straight line;
s12: and re-determining the printing ink quantity of each printing area according to the fitting curve or the fitting straight line.
6. A power adjustment device for a UV lamp comprising a plurality of light sources for illuminating at least 1 print area, the device comprising:
the printing ink quantity determining module is used for acquiring printing parameters and determining the printing ink quantity of each printing area according to the printing parameters;
the power weight determining module is used for determining the power weight of each light source for each printing area according to the distance between each light source and each printing area; acquiring a weight threshold value; comparing the power weight with the weight threshold; adjusting the power weight less than or equal to the weight threshold to zero; acquiring 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 smaller than the distance threshold value, determining the power weight according to 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 according to the distance;
and the output power determining module is used for determining the output power of each light source according to the power weight of each light source for each printing area and the printing ink quantity of each printing area.
7. A printing device comprising 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 of any of claims 1-5.
8. A storage medium having stored thereon computer program instructions, which when executed by a processor, implement the method of any of claims 1-5.
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