A color calibration method, apparatus and system

Abstract

The application provides a color calibration method, device and system. The method comprises: controlling a color spraying device to print a gradual color block array on a first printing medium based on a target ink step total ink amount percentage; the step total ink amount percentage comprises a plurality of total ink amount percentages increasing in steps; the gradual color block array comprises a hue gradient column printed based on each total ink amount percentage; the gradual color block array is used to determine a peak value of the total ink amount percentage; based on the peak value and a plurality of target color values, color performance of each target color value on the packaging material is determined; based on the peak value and the color performance of each target color value on the packaging material, a color calibration printing configuration file is generated; the color calibration printing configuration file is used for color calibration when the packaging material laminated with the photovoltaic module is inkjet printed. Through the method, the color printed by the color spraying device is closer to the input color.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of photovoltaic technology, in particular to a color calibration method, device and system. BACKGROUND

[0002] The main role of the packaging material of the photovoltaic module is to protect the battery piece from environmental erosion, while ensuring long-term power generation efficiency. The packaging material usually needs to select a material with certain transparency (i.e. light transmittance), for example, photovoltaic glass, PET (polyethylene terephthalate), PVC (polyvinyl chloride), PVDF (polyvinylidene fluoride), water-resistant film, etc.

[0003] At present, since the photovoltaic module itself has a certain base color, and the packaging material is usually a material with certain transparency, therefore, after the packaging material and the photovoltaic module are laminated, the color of the photovoltaic module itself can be seen through the packaging material. At this time, when the color spraying equipment sprays the input color (i.e. the color in the to-be-printed image) on the packaging material, the sprayed color presented on the packaging material will be inaccurate. For example, it is intended to spray a red pattern (i.e. the to-be-printed image is a red pattern) on the packaging material, but since the photovoltaic module is black, the sprayed color presented on the packaging material is usually a dark red pattern. It can be seen that there is a large difference between the sprayed color presented on the packaging material and the input color when the current color spraying equipment sprays the input color on the packaging material. SUMMARY

[0004] Therefore, the purpose of the present application is to provide a color calibration method, device and system, so that the sprayed color printed on the packaging material by the color spraying equipment is closer to the input color (i.e. the color in the to-be-printed image).

[0005] In a first aspect, an embodiment of the present application provides a color calibration method, comprising:

[0006] Based on the target ink step total ink percentage, the color spraying equipment is controlled to print a gradient color block array on a first printing medium by inkjet printing; the step total ink percentage includes a plurality of total ink percentages in a step increment; the gradient color block array includes a hue gradient column printed by inkjet printing based on each total ink percentage; the hue gradient column includes a first color block of different hues under the total ink percentage; the first printing medium is a packaging material laminated with a photovoltaic module, and the transparency of the packaging material is within a preset transparency range; the gradient color block array is used to determine the peak value of the total ink percentage, and the peak value is determined according to the color step change in the gradient color block array;

[0007] Based on the peak value and a plurality of target color values, the color performance of each target color value on the packaging material is determined.

[0008] generate a color calibration printing configuration file based on the peak value and the color appearance of each of the target color values on the encapsulating material; the color calibration printing configuration file is used for color calibration when performing inkjet printing on the encapsulating material laminated with the photovoltaic module.

[0009] With reference to the first aspect, in a first possible implementation manner of the first aspect, the determining the color appearance of each of the target color values on the encapsulating material based on the peak value and the plurality of target color values comprises:

[0010] controlling the color spraying device to inkjet print a second color block corresponding to each of the target color values on a target printing medium; the target printing medium is the encapsulating material laminated with the photovoltaic module;

[0011] controlling the color matching instrument to scan the second color block corresponding to each of the target color values inkjet printed on the target printing medium, and matching the target color value corresponding to each of the second color blocks with the color appearance of the second color block to obtain a matching result corresponding to each of the target color values;

[0012] The generating the color calibration printing configuration file based on the peak value and the color appearance of each of the target color values on the encapsulating material comprises:

[0013] generating the color calibration printing configuration file based on the peak value and each of the matching results.

[0014] With reference to the first aspect, in a second possible implementation manner of the first aspect, the controlling the color spraying device to inkjet print the array of gradient color blocks based on the step total ink percentage of the target ink comprises:

[0015] performing color formation detection on the inkjet printing performance of the color spraying device and the target ink used when inkjet printing.

[0016] With reference to the second possible implementation manner of the first aspect, in a third possible implementation manner of the first aspect, the target ink comprises a plurality of basic color inks; and the performing color formation detection on the inkjet printing performance of the color spraying device and the target ink used when inkjet printing comprises:

[0017] control the color spraying device to spray and print the step color block pattern on the second printing medium based on the step color block pattern contained in the step color block image; wherein the step color block pattern comprises a plurality of third color blocks with color density of each corresponding basic color ink changing in steps; and the second printing medium is the packaging material laminated with the photovoltaic module.

[0018] control the color calibration instrument to scan the step color block pattern sprayed and printed on the second printing medium to obtain a first scanning image, and generate a linearization curve corresponding to each basic color ink based on the first scanning image; wherein the linearization curve is used to represent the color saturation of the basic color ink corresponding thereto on the packaging material.

[0019] when the color saturation of each basic color ink on the packaging material meets the preset saturation requirement, control the color spraying device to spray and print a test pattern in each test image on a third printing medium based on a plurality of test images; and each test pattern sprayed and printed on the third printing medium is used to verify whether the inkjet printing performance of the color spraying device and the color formation detection of the target ink used when inkjet printing pass.

[0020] With reference to the third possible implementation manner of the first aspect, the fourth possible implementation manner of the first aspect is provided in the embodiments of the present application, and the method further comprises:

[0021] when the color saturation of at least one basic color ink on the packaging material does not meet the preset saturation requirement, detecting the saturation of the basic color ink itself, detecting the cleanliness of the second printing medium, and detecting the inkjet covering power of the inkjet end corresponding to the basic color ink in the color spraying device to determine the reason why the color saturation of the basic color ink on the packaging material does not meet the preset saturation requirement;

[0022] after eliminating the reason why the color saturation of the basic color ink on the packaging material does not meet the preset saturation requirement, control the color spraying device to re-spray and print the step color block pattern on a new second printing medium based on the step color block pattern contained in the step color block image until the color saturation of each basic color ink on the packaging material meets the preset saturation requirement, and then continue to execute the subsequent steps of controlling the color spraying device to spray and print a test pattern in each test image on a third printing medium based on a plurality of test images.

[0023] With reference to the third possible implementation of the first aspect, the test pattern comprises a line pattern with different line thicknesses, a character pattern with different font sizes, and a color superposition pattern.

[0024] With reference to the first possible implementation of the first aspect, the target ink comprises a plurality of base color inks, and the target color value is composed of ink percentage of each base color ink in the calibration color corresponding to the target color value. Based on the peak value and the target color values, the color spraying device is controlled to print second color blocks corresponding to the target color values on the target printing medium, comprising:

[0025] For each target color value, a corresponding white ink percentage is configured for the target color value based on the depth of the calibration color corresponding to the target color value. The deeper the calibration color corresponding to the target color value, the less white ink percentage is configured for the target color value. The shallower the calibration color corresponding to the target color value, the more white ink percentage is configured for the target color value.

[0026] For each target color value, it is determined whether the sum of ink percentages of each base color ink contained in the target color value is greater than the peak value.

[0027] When the sum of ink percentages of each base color ink contained in the target color value is less than or equal to the peak value, the color spraying device is controlled to print second color blocks corresponding to the target color values on the target printing medium based on the ink percentages of each base color ink contained in the target color value and the white ink percentage configured for the target color value.

[0028] When the sum of ink percentages of each base color ink contained in the target color value is greater than the peak value, the color spraying device is controlled to print second color blocks corresponding to the target color values on the target printing medium based on the peak value and the white ink percentage configured for the target color value. The color calibration printing configuration file further comprises the white ink percentage configured for each target color value.

[0029] With reference to the sixth possible implementation of the first aspect, the corresponding white ink percentage configured for the target color value based on the depth of the calibration color corresponding to the target color value comprises:

[0030] The corresponding white ink percentage configured for the target color value is calculated by the following formula:

[0031]

[0032] Wherein, m represents the sum of ink percentage of each base color ink contained in the target color value; w represents the white ink percentage configured for the target color value; the value range of ink percentage of each base color ink is 0-100%.

[0033] With reference to the sixth possible implementation manner of the first aspect, the application provides an eighth possible implementation manner of the first aspect.

[0034] After receiving the to-be-printed image, the color spraying device is controlled to determine the color representation corresponding to each color in the to-be-printed image in the color calibration printing configuration file;

[0035] The target color value corresponding to the color representation and the white ink percentage configured for the target color value are taken as the inkjet printing color information after color calibration.

[0036] The inkjet printing color information is used to control the color spraying device to print the color on a to-be-printed medium; the to-be-printed medium is the packaging material laminated with the photovoltaic module.

[0037] In the second aspect, the application further provides a color calibration device, which comprises:

[0038] The first control module is configured to control the color spraying device to inkjet print a gradual color block array on a first printing medium based on a target ink ladder total ink percentage; the target ink ladder total ink percentage comprises a plurality of total ink percentages in a ladder increment; the gradual color block array comprises a hue gradient column inkjet printed based on each total ink percentage; the hue gradient column comprises a first color block of different hues under the total ink percentage; the first printing medium is a packaging material laminated with a photovoltaic module, and the transparency of the packaging material is within a preset transparency range; the gradual color block array is used to determine a peak value of the total ink percentage, and the peak value is determined according to the color step change in the gradual color block array.

[0039] The first determination module is configured to determine the color representation of each target color value on the packaging material based on the peak value and a plurality of target color values.

[0040] The generation module is configured to generate a color calibration printing configuration file based on the peak value and the color representation of each target color value on the packaging material; the color calibration printing configuration file is used for color calibration when inkjet printing the packaging material laminated with the photovoltaic module.

[0041] In the third aspect, the application further provides a color calibration system, which comprises a color spraying device and a color calibration instrument.

[0042] The color spraying device is configured to control the color spraying device to print a gradient color block array on the first printing medium based on a target ink step total ink amount percentage, the step total ink amount percentage comprises a plurality of total ink amount percentages in a step increment, the gradient color block array comprises a hue gradient column printed based on each total ink amount percentage, the hue gradient column comprises a first color block of different hues under the total ink amount percentage, the first printing medium is a packaging material laminated with a photovoltaic module, the transparency of the packaging material is within a preset transparency range, and the gradient color block array is used to determine a peak value of the total ink amount percentage, the peak value is determined according to a color step change in the gradient color block array.

[0043] The color calibration instrument is configured to determine color performances of each target color value on the packaging material based on the peak value and the target color values.

[0044] The color calibration instrument is further configured to generate a color calibration printing configuration file based on the peak value and the color performances of each target color value on the packaging material, and the color calibration printing configuration file is used for color calibration when performing inkjet printing on the packaging material laminated with the photovoltaic module.

[0045] The color calibration method, device and system provided by the embodiment of the present application, by generating a color calibration printing configuration file, the color spraying device is used to perform color calibration on the input image to be printed using the color calibration printing configuration file when performing inkjet printing on the packaging material laminated with the photovoltaic module, so as to facilitate the color spraying device to print the color closer to the color performance in the image to be printed.

[0046] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the following preferred embodiments are described in detail below, and the accompanying drawings are described as follows. BRIEF DESCRIPTION OF DRAWINGS

[0047] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments, and it should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0048] Figure 1 A flowchart of a color calibration method provided by an embodiment of the present application is shown;

[0049] Figure 2A gradient color block array diagram printed on a first printing medium by the embodiment of the present application is shown;

[0050] Figure 3 A diagram showing the embodiment of the present application for printing second color blocks corresponding to each target color value on a target printing medium is shown;

[0051] Figure 4 A diagram showing the embodiment of the present application for printing a gradient color block pattern is shown;

[0052] Figure 5 A diagram showing the embodiment of the present application for printing a linearization curve is shown;

[0053] Figure 6 A diagram showing the embodiment of the present application for printing a linearization curve is shown. DETAILED DESCRIPTION

[0054] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0055] Considering that the photovoltaic module itself has a certain base color (for example, black), and the encapsulating material is usually a material with a certain transparency, therefore, after the encapsulating material is laminated with the photovoltaic module, the color of the photovoltaic module itself can be seen through the encapsulating material. At this time, when the color spraying device sprays the input color (i.e. the color in the image to be printed) on the encapsulating material, the sprayed color presented on the encapsulating material will be inaccurate. For example, it is intended to spray a red pattern (i.e. the image to be printed is a red pattern) on the encapsulating material, but since the photovoltaic module is black, the sprayed color presented on the encapsulating material is usually a dark red pattern. It can be seen that there is a large difference between the sprayed color presented on the encapsulating material and the input color when the current color spraying device sprays the input color on the encapsulating material. Based on this, the embodiments of the present application provide a color calibration method, device and system, which are described below through embodiments.

[0056] It is worth noting that in the embodiment, the packaging material laminated with the photovoltaic module is actually a layer of colored photoelectric material compounded on the surface of the photovoltaic module, and the photovoltaic module and the layer of colored photoelectric material compounded on the surface of the photovoltaic module together constitute a full-color photoelectric functional material. Through the full-color photoelectric functional material, the appearance of the traditional photovoltaic module has color and pattern, and thus the external visual effect of being integrated with the environment is achieved. The full-color photoelectric functional material can realize customization of full-color photoelectric functional material products of different colors, patterns and functions according to different needs and application scenarios, so as to meet diversified needs.

[0057] To facilitate the understanding of the embodiment, first, a color calibration method disclosed in the embodiment is introduced in detail. As shown in Figure 1 the following steps S101-S103 are included:

[0058] S101: Based on the step total ink amount percentage of the target ink, control the color spraying equipment to spray ink and print a gradual color block array on the first printing medium; the step total ink amount percentage includes a plurality of step total ink amount percentages; the gradual color block array includes a hue gradient column sprayed and printed based on each total ink amount percentage; the hue gradient column includes a first color block of different hues under the total ink amount percentage; the first printing medium is a packaging material laminated with a photovoltaic module, and the transparency of the packaging material is within a preset transparency range; the gradual color block array is used to determine the peak value of the total ink amount percentage, and the peak value is determined according to the color step change in the gradual color block array.

[0059] S102: Based on the peak value and a plurality of target color values, determine the color performance of each target color value on the packaging material.

[0060] S103: Based on the peak value and the color performance of each target color value on the packaging material, generate a color calibration printing configuration file; the color calibration printing configuration file is used for color calibration when spraying ink on the packaging material laminated with the photovoltaic module.

[0061] In step S101, the color spraying equipment can be a full-color micro-layer color forming device, which adopts a multi-nozzle configuration, and different nozzles are configured with different color inks.

[0062] The target ink includes a plurality of basic color inks, for example, the target ink includes inks of four basic colors of cyan (Cyan), magenta (Magenta), yellow (Yellow) and black (Key / Black). Different basic color inks are configured in the ink path corresponding to different nozzles of the color spraying equipment, so that each nozzle can spray out the ink of the corresponding basic color, and full-color output is realized through the superposition and mixing of the four basic colors.

[0063] The photovoltaic module is generally black, and the transparency of the encapsulating material laminated with the photovoltaic module is within a preset transparency range, where the preset transparency range is (0, 100%], where the transparency of 0 means completely opaque, that is, when the transparency is 0, the encapsulating material is an opaque material; the transparency of 100% means completely transparent, that is, when the transparency is 100%, the encapsulating material is a completely transparent material.

[0064] Therefore, the color (black) of the photovoltaic module itself can be seen through the encapsulating material. The encapsulating material is any one of the following: photovoltaic glass, PET, PVC, PVDF, and water-blocking film. Preferably, the encapsulating material is photovoltaic glass.

[0065] In this embodiment, the total ink percentage value ranges from 0 to 400%. As shown in Figure 2 , a plurality of total ink percentages with step increments are shown, which are 150%, 160%,..., 400%, respectively. The total ink percentage is equal to the sum of the ink percentages corresponding to the four basic colors of CMYK, respectively. For example, when the ink percentages corresponding to the four basic colors of CMYK are 100%, 100%, 100%, and 100%, respectively, the total ink percentage corresponding to CMYK (100%, 100%, 100%, 100%) is 400%. When the ink percentages corresponding to the four basic colors of CMYK are 0%, 0%, 0%, and 0%, respectively, the total ink percentage corresponding to CMYK (0%, 0%, 0%, 0) is 0%.

[0066] In this example, as can be seen from Figure 2 , when the total ink percentage is 360% or more, the color does not change much, which indicates that the combination of the four basic colors has reached the peak at 360%, and there is no need to increase the ink amount, that is, the peak value of the total ink percentage in this example is 360%.

[0067] In step S102, when step S102 is performed, the following steps S1021-S1022 can be performed:

[0068] S1021: based on the peak value and the plurality of target color values, controlling the color spraying device to spray and print the second color blocks corresponding to the plurality of target color values on the target printing medium; the target printing medium is the encapsulating material laminated with the photovoltaic module.

[0069] S1022: controlling the color matching instrument to scan the second color blocks corresponding to the plurality of target color values sprayed and printed on the target printing medium, matching the target color values corresponding to the second color blocks with the color performance of the second color blocks, and obtaining the matching results corresponding to the plurality of target color values.

[0070] In step S1021, the target color value is constituted by the ink amount percentage of each base color ink in the calibration color corresponding to the target color value. For example, when the target color value is CMYK (0, 0, 0, 0), the calibration color corresponding to the target color value is white, and the ink amount percentage of each base color ink is 0% respectively. Generally, as shown in the following table, when the target color value is CMYK (0, 0, 0, 0), the calibration color corresponding to the target color value is white, and the ink amount percentage of each base color ink is 0% respectively. Figure 3 As shown, the second color block has thousands of second color blocks.

[0071] In this embodiment, when step S1021 is performed, it can be performed according to the following steps S10211-S10212:

[0072] S10211: For each target color value, configure the white ink amount percentage of the target color value based on the depth of the calibration color corresponding to the target color value; the deeper the calibration color corresponding to the target color value, the less white ink amount percentage is configured for the target color value; the lighter the calibration color corresponding to the target color value, the more white ink amount percentage is configured for the target color value.

[0073] S10212: For each target color value, determine whether the sum of the ink amount percentage of each base color ink contained in the target color value is greater than the peak value.

[0074] S10213: When it is less than or equal to the peak value, control the color spraying device to inkjet print the second color block corresponding to the target color value on the target printing medium based on the ink amount percentage of each base color ink contained in the target color value and the white ink amount percentage configured for the target color value.

[0075] S10214: When it is greater than the peak value, control the color spraying device to inkjet print the second color block corresponding to the target color value on the target printing medium based on the peak value and the white ink amount percentage configured for the target color value; the color calibration printing configuration file further contains the white ink amount percentage configured for each target color value.

[0076] In step S10211, considering that when inkjet printing is performed on the encapsulating material (laminated with the photovoltaic module), the photovoltaic module located at the dark color pattern will be weak in light transmittance (i.e., strong in shading rate), thus causing the photovoltaic module at the dark color pattern to act as a load in the entire photovoltaic module and absorb the electric energy generated by the photovoltaic module at other positions, thereby causing hot spot effect at the photovoltaic module at the dark color pattern.

[0077] To solve the problem, in the embodiment, for each target color value, when the calibration color corresponding to the target color value is lighter, the white ink amount percentage configured for the target color value is more, so as to reduce the light transmittance and increase the hiding rate; when the calibration color corresponding to the target color value is darker, the white ink amount percentage configured for the target color value is less, so as to increase the light transmittance and reduce the hiding rate.

[0078] Based on this, in the embodiment, when step S10211 is performed, the corresponding white ink amount percentage configured for the target color value can be calculated by the following formula:

[0079]

[0080] Wherein, m represents the sum of the ink amount percentages of each basic color ink contained in the target color value; w represents the corresponding white ink amount percentage configured for the target color value; the value range of the ink amount percentage of each basic color ink is 0-100%.

[0081] In step S10212, when performing inkjet printing on the packaging material (laminated with the photovoltaic module), for example, for black CMYK (100%, 100%, 100%, 100%), the sum of the ink amount percentages of each basic color ink contained in the target color value is 400%, which is greater than the peak value 360%. For white CMYK (0%, 0%, 0%, 0%), the sum of the ink amount percentages of each basic color ink contained in the target color value is 0%, which is less than the peak value 360%.

[0082] In step S10214, by Figure 2 It can be seen that, for example, when the total ink amount percentage is 360%-400%, the color performance of inkjet printing is consistent, therefore, if the sum of the ink amount percentages of each basic color ink is 400% which is greater than the peak value 360%, directly based on the peak value and the white ink amount percentage configured for the target color value, inkjet printing the second color block corresponding to the target color value on the target printing medium is beneficial to save the ink amount while ensuring the consistency of the color performance of inkjet printing.

[0083] In step S103, when step S103 is performed, it can be performed according to the following steps:

[0084] Based on the peak value and each matching result, a color calibration printing configuration file is generated.

[0085] In the embodiment, the color calibration printing configuration file contains the peak value and each matching result.

[0086] In a possible implementation, after the color calibration printing profile is generated, the color calibration printing profile is used for color calibration, which can be specifically performed according to the following steps S1041-S1043:

[0087] S1041: After receiving the to-be-printed image, the color spraying device is controlled to determine, according to each color in the to-be-printed image, a color representation corresponding to the color in the color calibration printing profile;

[0088] S1042: The target color value corresponding to the color representation and the white ink amount percentage configured for the target color value are taken as the color calibration inkjet printing color information;

[0089] S1043: The inkjet printing color information is used to control the color spraying device to print the color on the to-be-printed medium; the to-be-printed medium is packaging material laminated with a photovoltaic module.

[0090] In a possible implementation, before step S101 is performed, the following steps can also be performed:

[0091] S100: Color formation detection is performed on the inkjet printing performance of the color spraying device and the target ink used when the inkjet printing is performed.

[0092] In this embodiment, after the color formation detection on the inkjet printing performance of the color spraying device and the target ink used when the inkjet printing is performed is passed, step S101 and subsequent steps are continued to be performed.

[0093] In a possible implementation, the target ink includes a plurality of basic color inks; when step S101 is performed, the following steps S1001-S1003 can be specifically performed:

[0094] S1001: Based on the step color block pattern included in the step color block image, the color spraying device is controlled to inkjet print the step color block pattern on the second printing medium; the step color block pattern includes a plurality of third color blocks with color density of each basic color ink changing in steps; the second printing medium is packaging material laminated with a photovoltaic module.

[0095] S1002: The color calibration instrument is controlled to scan the inkjet printed step color block pattern on the second printing medium to obtain a first scanning image, and a linearization curve corresponding to each basic color ink is generated based on the first scanning image; the linearization curve is used to represent the color saturation of the basic color ink corresponding thereto on the packaging material.

[0096] S1003: When the color saturation of each base color ink on the encapsulating material meets the preset saturation requirement, based on the received multiple test images, control the color spraying device to spray and print the test patterns in the test images on a third printing medium; each test pattern sprayed and printed on the third printing medium is used to verify whether the inkjet printing performance of the color spraying device and the color formation detection of the target ink used during inkjet printing pass.

[0097] In step S1001, as shown in the step block pattern, the step block pattern includes multiple third blocks corresponding to the color density step changes of the respective colors of the CMYK four base color inks. Figure 4 Figure 4 The horizontal coordinate is used to represent the ink percentage of the base color ink. The greater the ink percentage, the deeper the color density of the corresponding base color ink; otherwise, the smaller the ink percentage, the lighter the color density of the corresponding base color ink. Generally, the value range of the ink percentage is 0-100%.

[0098] Figure 5 In each base color ink, a linear curve corresponding to the base color ink is used to represent the color saturation of the base color ink on the encapsulating material.

[0099] Figure 5 The trend of the linear curve corresponding to each base color ink in the step block pattern meets the normal color saturation of the base color ink on the encapsulating material (for example, when the ink percentage of the yellow ink is 100%, the vertical coordinate of the linear curve corresponding to the yellow ink should be 100 under normal circumstances), so the color saturation of each base color ink on the encapsulating material in this example meets the preset saturation requirement.

[0100] In step S1002, the horizontal coordinate of the linear curve is used to represent the ink percentage of the base color ink, and the vertical coordinate is used to represent the color saturation of the base color ink on the encapsulating material. Under normal circumstances, the greater the ink percentage of the base color ink, the higher the color saturation of the base color ink on the encapsulating material, and vice versa, the smaller the ink percentage of the base color ink, the lower the color saturation of the base color ink on the encapsulating material.

[0101] In step S1003, when the color saturation of each base color ink on the encapsulating material meets the preset saturation requirement, the test patterns sprayed and printed on the third printing medium are used to further verify whether the inkjet printing performance of the color spraying device and the color formation detection of the target ink used during inkjet printing pass. The third printing medium is the encapsulating material laminated with the photovoltaic module.

[0102] ​In this embodiment, the target ink is subjected to preliminary colorimetric testing in steps S1001-S1002. After the preliminary colorimetric testing is passed, the color spraying equipment and the target ink are further subjected to colorimetric testing in step S1003.

[0103] In one possible implementation, such as Figure 6 As shown, the test patterns include: line patterns with different line thicknesses, text patterns with different font sizes, and color overlay patterns.

[0104] In this embodiment, if the line thickness in the line pattern is clear, the text in the text pattern is clear, and the color overlay in the color overlay pattern is well represented, it indicates that the inkjet printing performance of the color spraying equipment and the color of the target ink used in inkjet printing have passed the test.

[0105] In another possible implementation, after performing step S1002, the following steps may also be performed:

[0106] S1004: When the color saturation of at least one basic color ink on the packaging material does not meet the preset saturation requirement, the saturation of the basic color ink that does not meet the preset saturation requirement is detected, the cleanliness of the second printing medium is detected, and the inkjet opacity of the inkjet end corresponding to the basic color ink in the color spraying equipment is detected, so as to determine the reason why the color saturation of the basic color ink on the packaging material does not meet the preset saturation requirement.

[0107] S1005: After eliminating the cause that the color saturation of the base color ink on the packaging material does not meet the preset saturation requirement, based on the stepped color block pattern contained in the stepped color block image, control the color spraying equipment to re-inkjet print the stepped color block pattern on a new second printing medium until the color saturation of each base color ink on the packaging material meets the preset saturation requirement. Then, continue to execute the test pattern in each test image and subsequent steps based on multiple test images, controlling the color spraying equipment to inkjet print the test pattern in each test image on a third printing medium.

[0108] In step S1004, as Figure 5 As shown, if the linearization curve corresponding to black ink has a horizontal axis of 100 (i.e., 100%) and a vertical axis of 50, it means that the trend of the linearization curve corresponding to black ink does not conform to the color saturation of the base color ink on the packaging material under normal circumstances, that is, the color saturation of black ink on the packaging material does not meet the preset saturation requirements.

[0109] At this time, it is necessary to detect the saturation of the black ink itself, detect the cleanliness of the second printing medium, and detect the ink jet covering power of the ink jet end (i.e. the ink jet head) corresponding to the black ink in the color spraying device, so as to determine the reason why the color saturation of the black ink on the packaging material does not meet the preset saturation requirement.

[0110] In step S1005, after excluding the reason why the color saturation of the base color ink on the packaging material does not meet the preset saturation requirement, steps S1001-S1002 are re-executed until the color saturation of each base color ink on the packaging material meets the preset saturation requirement, and then step S1013 is executed to control the color spraying device to print the test pattern in each test image on the third printing medium based on the received test images.

[0111] Based on the same technical concept, the embodiment of the present application also provides a color calibration device, which comprises:

[0112] The first control module is configured to control the color spraying device to print a gradual color block array on the first printing medium based on the step total ink amount percentage of the target ink; the step total ink amount percentage comprises a plurality of total ink amount percentages in steps; the gradual color block array comprises a hue gradient column printed based on each total ink amount percentage; the hue gradient column comprises a first color block of different hues under the total ink amount percentage; the first printing medium is packaging material laminated with a photovoltaic module, and the transparency of the packaging material is within a preset transparency range; the gradual color block array is used to determine a peak value of the total ink amount percentage, and the peak value is determined according to the color step change in the gradual color block array;

[0113] The first determination module is configured to determine the color performance of each target color value on the packaging material based on the peak value and a plurality of target color values.

[0114] The generation module is configured to generate a color calibration printing configuration file based on the peak value and the color performance of each target color value on the packaging material; and the color calibration printing configuration file is used for color calibration when the packaging material laminated with the photovoltaic module is ink jet printed.

[0115] Optionally, when the first determination module is used to determine the color performance of each target color value on the packaging material based on the peak value and a plurality of target color values, the first determination module is specifically configured to:

[0116] control the color spraying device to spray ink to print out a second color block corresponding to each target color value on a target printing medium based on the peak value and the target color values; the target printing medium is the encapsulating material laminated with the photovoltaic module;

[0117] control the color calibration instrument to scan the second color block corresponding to each target color value on the target printing medium, match the target color value corresponding to each second color block with the color performance of the second color block, and obtain a matching result corresponding to each target color value;

[0118] The generation module is specifically configured to:

[0119] generate a color calibration printing configuration file based on the peak value and the color performance of each target color value on the encapsulating material.

[0120] Optionally, the device further comprises:

[0121] The detection module is configured to perform color formation detection on the inkjet printing performance of the color spraying device and the target ink used in inkjet printing before the first control module controls the color spraying device to spray ink to print out the array of gradient color blocks on the first printing medium based on the total ink percentage of the target ink.

[0122] Optionally, the target ink comprises a plurality of basic color inks; the detection module is specifically configured to:

[0123] control the color spraying device to spray ink to print out a ladder color block pattern on a second printing medium based on the ladder color block pattern contained in the ladder color block image; the ladder color block pattern comprises a plurality of third color blocks with color density ladder changes corresponding to the plurality of basic color inks respectively; the second printing medium is the encapsulating material laminated with the photovoltaic module;

[0124] control the color calibration instrument to scan the ladder color block pattern sprayed on the second printing medium to obtain a first scan image, and generate a linearization curve corresponding to each basic color ink based on the first scan image; the linearization curve is used to represent the color saturation of the basic color ink corresponding thereto on the encapsulating material;

[0125] When the color saturation of each of the base color inks on the packaging material meets the preset saturation requirement, based on the plurality of test images, the color spraying device is controlled to spray and print test patterns in the test images on a third printing medium; and the test patterns sprayed and printed on the third printing medium are used to verify the inkjet printing performance of the color spraying device and whether the color formation detection of the target ink used in inkjet printing is passed.

[0126] Optionally, the detection module is further configured to:

[0127] When there is at least one base color ink whose color saturation on the packaging material does not meet the preset saturation requirement, the saturation of the base color ink itself, the cleanliness of the second printing medium, and the inkjet covering power of the inkjet end corresponding to the base color ink in the color spraying device are detected to determine the cause of the base color ink whose color saturation on the packaging material does not meet the preset saturation requirement;

[0128] After eliminating the cause of the base color ink whose color saturation on the packaging material does not meet the preset saturation requirement, based on the step color block patterns contained in the step color block images, the color spraying device is controlled to spray and print the step color block patterns on a new second printing medium until the color saturation of each of the base color inks on the packaging material meets the preset saturation requirement, and then the color spraying device is controlled to spray and print test patterns in the test images on a third printing medium based on the plurality of test images, and subsequent steps are continued.

[0129] Optionally, the test patterns include line patterns with different line thicknesses, character patterns with different font sizes, and color superposition patterns.

[0130] Optionally, the target ink includes a plurality of base color inks; the target color value is composed of the ink percentage of each base color ink in the calibration color corresponding to the target color value; and the first determination module is specifically configured to:

[0131] For each target color value, a corresponding white ink percentage is configured for the target color value based on the depth of the calibration color corresponding to the target color value; the deeper the calibration color corresponding to the target color value, the less white ink percentage is configured for the target color value; and the shallower the calibration color corresponding to the target color value, the more white ink percentage is configured for the target color value.

[0132] determining whether the sum of the ink percentage of each base color ink contained in the target color value is greater than the peak value for each target color value;

[0133] when less than or equal to the peak value, controlling the color spraying device to print out the second color block corresponding to the target color value on the target printing medium based on the ink percentage of each base color ink contained in the target color value and the white ink percentage configured for the target color value;

[0134] when greater than the peak value, controlling the color spraying device to print out the second color block corresponding to the target color value on the target printing medium based on the peak value and the white ink percentage configured for the target color value; the color calibration printing configuration file further contains the white ink percentage configured for each target color value.

[0135] Optionally, the first determining module, when used for configuring the corresponding white ink percentage for the target color value based on the lightness of the calibration color corresponding to the target color value, is specifically used for:

[0136] configuring the corresponding white ink percentage for the target color value by the following formula:

[0137]

[0138] wherein m represents the sum of the ink percentage of each base color ink contained in the target color value; w represents the corresponding white ink percentage configured for the target color value; the value range of the ink percentage of each base color ink is 0-100%.

[0139] Optionally, the apparatus further comprises:

[0140] a second determining module configured to, after receiving the image to be printed, control the color spraying device to determine the color representation corresponding to each color in the image to be printed in the color calibration printing configuration file;

[0141] a third determining module configured to take the target color value corresponding to the color representation and the white ink percentage configured for the target color value as the inkjet printing color information after color calibration;

[0142] a second control module configured to control the color spraying device to print out the color on the printing medium to be printed by using the inkjet printing color information; the printing medium to be printed is the encapsulating material laminated with the photovoltaic module.

[0143] Based on the same technical concept, the embodiment of the present application further provides a color calibration system, which comprises a color spraying device and a color calibration instrument.

[0144] The color spraying device is configured to control the color spraying device to spray ink to print a gradient color block array on a first printing medium based on a target ink step total ink amount percentage; the step total ink amount percentage includes a plurality of total ink amount percentages that increase step by step; the gradient color block array includes a hue gradient column sprayed and printed based on each total ink amount percentage; the hue gradient column includes a first color block of different hues under the total ink amount percentage; the first printing medium is a packaging material laminated with a photovoltaic module, and transparency of the packaging material is within a preset transparency range; and the gradient color block array is used to determine a peak value of the total ink amount percentage, and the peak value is determined according to a color step change in the gradient color block array.

[0145] The color calibration instrument is configured to determine color performance of each target color value on the packaging material based on the peak value and the plurality of target color values.

[0146] The color calibration instrument is further configured to generate a color calibration printing configuration file based on the peak value and the color performance of each target color value on the packaging material; and the color calibration printing configuration file is used for color calibration when inkjet printing is performed on the packaging material laminated with the photovoltaic module.

[0147] Optionally, when the color calibration instrument is configured to determine color performance of each target color value on the packaging material based on the peak value and the plurality of target color values, the color calibration instrument includes:

[0148] The color spraying device is configured to control the color spraying device to spray ink to print a second color block corresponding to each target color value on a target printing medium based on the peak value and the plurality of target color values; and the target printing medium is the packaging material laminated with the photovoltaic module.

[0149] The color calibration instrument is configured to control the color calibration instrument to scan the second color block corresponding to each target color value sprayed and printed on the target printing medium, match the target color value corresponding to each second color block with color performance of the second color block, and obtain a matching result corresponding to each target color value.

[0150] When the color calibration instrument is configured to generate a color calibration printing configuration file based on the peak value and the color performance of each target color value on the packaging material, the color calibration instrument is specifically configured to:

[0151] generate the color calibration printing configuration file based on the peak value and the matching result corresponding to each target color value.

[0152] Optionally, the color spraying device is further configured to perform color formation detection on inkjet printing performance of the color spraying device and target ink used in inkjet printing.

[0153] Optionally, the target ink comprises a plurality of base color inks; and the color spraying device, when performing color formation detection on inkjet printing performance of the color spraying device and target ink used in inkjet printing, comprises:

[0154] The color spraying device is specifically configured to control the color spraying device to inkjet print the step color block pattern on the second printing medium based on the step color block pattern contained in the step color block image; wherein the step color block pattern comprises a plurality of third color blocks each corresponding to a color density step change of a respective base color ink; and the second printing medium is the encapsulating material laminated with the photovoltaic module.

[0155] The color calibration instrument is specifically configured to control the color calibration instrument to scan the step color block pattern inkjet printed on the second printing medium to obtain a first scan image, and generate a linearization curve corresponding to each base color ink based on the first scan image; wherein the linearization curve is used to represent color saturation of the corresponding base color ink on the encapsulating material.

[0156] The color spraying device is specifically configured to, when the color saturation of each base color ink on the encapsulating material meets a preset saturation requirement, control the color spraying device to inkjet print a test pattern in each test image on a third printing medium based on a plurality of test images; and each test pattern inkjet printed on the third printing medium is used to verify whether the color formation detection of the inkjet printing performance of the color spraying device and the target ink used in inkjet printing passes.

[0157] Optionally, the color spraying device is further configured to:

[0158] When the color saturation of at least one base color ink on the encapsulating material does not meet the preset saturation requirement, the saturation of the base color ink itself that does not meet the preset saturation requirement is detected, the cleanliness of the second printing medium is detected, and the inkjet covering power of the inkjet end corresponding to the base color ink in the color spraying device is detected to determine the cause of the color saturation of the base color ink on the encapsulating material not meeting the preset saturation requirement.

[0159] After eliminating the reason that causes the color saturation of the base color ink on the encapsulating material to not meet the preset saturation requirement, the color spraying device is controlled to spray and print the step block pattern on a new second printing medium based on the step block pattern contained in the step block image until the color saturation of each base color ink on the encapsulating material meets the preset saturation requirement, and then the color spraying device is controlled to spray and print the test pattern in each test image on a third printing medium based on a plurality of test images, and subsequent steps are performed.

[0160] Optionally, the test pattern includes a line pattern with different line thicknesses, a character pattern with different font sizes, and a color superposition pattern.

[0161] Optionally, the target ink includes a plurality of base color inks, and the target color value is composed of the ink percentage of each base color ink in the calibration color corresponding to the target color value. When the color spraying device is used to control the color spraying device to spray and print the second color block corresponding to each target color value on a target printing medium based on the peak value and a plurality of target color values, it is specifically used to:

[0162] For each target color value, a corresponding white ink percentage is configured for the target color value based on the depth of the calibration color corresponding to the target color value. The deeper the calibration color corresponding to the target color value, the less white ink percentage is configured for the target color value. The lighter the calibration color corresponding to the target color value, the more white ink percentage is configured for the target color value.

[0163] For each target color value, it is determined whether the sum of the ink percentages of each base color ink contained in the target color value is greater than the peak value.

[0164] When it is less than or equal to the peak value, the color spraying device is controlled to spray and print the second color block corresponding to the target color value on a target printing medium based on the ink percentage of each base color ink contained in the target color value and the white ink percentage configured for the target color value.

[0165] When it is greater than the peak value, the color spraying device is controlled to spray and print the second color block corresponding to the target color value on a target printing medium based on the peak value and the white ink percentage configured for the target color value. The color calibration printing configuration file further includes the white ink percentage configured for each target color value.

[0166] Optionally, when the color spraying device is used to configure a corresponding white ink percentage for the target color value based on the depth of the calibration color corresponding to the target color value, it is specifically used to:

[0167] The corresponding white ink ink amount percentage is configured for the target color value by the following formula:

[0168]

[0169] Wherein, m represents the sum of ink amount percentages of each base color ink contained in the target color value; w represents the corresponding white ink ink amount percentage configured for the target color value; the value range of the ink amount percentage of each base color ink is 0-100%.

[0170] Optionally, the color spraying device is further used for:

[0171] After receiving the to-be-printed image, according to each color in the to-be-printed image, the color spraying device determines the color representation corresponding to the color in the color calibration printing configuration file;

[0172] The target color value corresponding to the color representation and the white ink ink amount percentage configured for the target color value are taken as the color-calibrated inkjet printing color information;

[0173] The inkjet printing color information is used to control the color spraying device to print the color on the to-be-printed medium; the to-be-printed medium is the packaging material laminated with the photovoltaic module.

[0174] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the above-described device and system can refer to the corresponding process in the foregoing method embodiments, which will not be repeated here.

[0175] In several embodiments provided in the present application, it should be understood that the disclosed method, device and system can be implemented by other ways. The device embodiments described above are only schematic, for example, the division of the modules is only a logical function division, and actual implementation can have another division manner, for example, a plurality of modules or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the shown or discussed units can be indirect coupling or communication connection through some communication interfaces, devices or units, which can be electrical, mechanical or other forms.

[0176] The units described as separate components can or can not be physically separate, and the components shown as units can or can not be physical units, that is, they can be located in one place, or can be distributed on a plurality of network units. According to actual needs, part or all of the units can be selected to achieve the purpose of the embodiment scheme.

[0177] In addition, each functional unit in each embodiment of the present application can be integrated in one processing unit, or each unit can be physically present separately, or two or more units can be integrated in one unit.

[0178] If the functions are realized in the form of software functional units and sold or used as independent products, they can be stored in a nonvolatile computer readable storage medium executable by a processor. Based on this understanding, the technical solutions of the present application or the part of the present application that essentially contributes to the prior art or the part of the technical solutions of the present application can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes a plurality of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and various program code storage media.

[0179] Finally, it should be noted that: the above-described embodiments are merely specific embodiments of the present application, used to illustrate the technical solutions of the present application, and not to limit them. The protection scope of the present application is not limited thereto, although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can modify or easily think of changes to the technical solutions described in the foregoing embodiments within the technical scope disclosed by the present application, or replace some technical features with equivalent replacements; and these modifications, changes or replacements do not make the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A color calibration method, characterized by, The method comprises the following steps: controlling a color spraying device to print a gradient color block array on a first printing medium based on a target ink step total ink percentage; the step total ink percentage comprises a plurality of step total ink percentages; the target ink comprises four basic color inks; the total ink percentage ranges from 0 to 400%; the total ink percentage is equal to the sum of the ink percentages of the four basic color inks; the gradient color block array comprises a hue gradient column printed based on each total ink percentage; the hue gradient column comprises a first color block of different hues under the total ink percentage; the first printing medium is a packaging material laminated with a photovoltaic module; the transparency of the packaging material is within a preset transparency range; the gradient color block array is used to determine a peak value of the total ink percentage, which is determined according to the color step change in the gradient color block array; determining the color performance of each target color value on the packaging material based on the peak value and a plurality of target color values; generating a color calibration printing configuration file based on the peak value and the color performance of each target color value on the packaging material; the color calibration printing configuration file is used for color calibration when the packaging material laminated with the photovoltaic module is inkjet printed; the target color value is composed of the ink percentages of the basic color inks in the calibration color corresponding to the target color value; the method of determining the color performance of each target color value on the packaging material based on the peak value and a plurality of target color values comprises: for each target color value, configuring a corresponding white ink percentage for the target color value based on the depth of the calibration color corresponding to the target color value; the deeper the calibration color corresponding to the target color value, the less white ink percentage is configured for the target color value; the shallower the calibration color corresponding to the target color value, the more white ink percentage is configured for the target color value; for each target color value, determining whether the sum of the ink percentages of the basic color inks contained in the target color value is greater than the peak value; when less than or equal to the peak value, controlling the color spraying device to print a second color block corresponding to the target color value on a target printing medium based on the ink percentages of the basic color inks contained in the target color value and the white ink percentage configured for the target color value; the target printing medium is the packaging material laminated with the photovoltaic module; when greater than the peak value, controlling the color spraying device to print a second color block corresponding to the target color value on a target printing medium based on the peak value and the white ink percentage configured for the target color value; the color calibration printing configuration file further comprises the white ink percentage configured for each target color value. The control calibration instrument scans the second color blocks corresponding to the target color values on the target printing medium, and matches the target color values corresponding to the second color blocks with the color performance of the second color blocks to obtain a matching result corresponding to each target color value.

2. The method of claim 1, wherein, The color calibration printing profile is generated based on the peak value and the color performance of each target color value on the encapsulating material, including: The color calibration printing profile is generated based on the peak value and the matching result.

3. The method of claim 1, wherein, The method further includes the following steps before the color spraying equipment prints the gradient color block array image on the first printing medium based on the target ink step total ink percentage: The color performance of the color spraying equipment and the target ink used in inkjet printing are detected.

4. The method of claim 3, wherein, The target ink includes a plurality of basic color inks; The color performance of the color spraying equipment and the target ink used in inkjet printing are detected, including: The color spraying equipment is controlled to print the step color block pattern on the second printing medium based on the step color block pattern included in the step color block image; the step color block pattern includes a plurality of third color blocks corresponding to the color concentration step change of each basic color ink; and the second printing medium is the encapsulating material laminated with the photovoltaic module. The calibration instrument is controlled to scan the step color block pattern printed on the second printing medium to obtain a first scanning image, and a linearization curve corresponding to each basic color ink is generated based on the first scanning image; the linearization curve is used to represent the color saturation of the basic color ink corresponding thereto on the encapsulating material. When the color saturation of each basic color ink on the encapsulating material meets the preset saturation requirement, a test pattern in each test image is printed on a third printing medium by the color spraying equipment based on a plurality of test images; and each test pattern printed on the third printing medium is used to verify whether the color performance of the color spraying equipment and the color detection of the target ink used in inkjet printing pass.

5. The method of claim 4, wherein, The method further includes the following steps: When the color saturation of at least one basic color ink on the encapsulating material does not meet the preset saturation requirement, the saturation of the basic color ink itself that does not meet the preset saturation requirement is detected, the cleanliness of the second printing medium is detected, and the inkjet covering power of the inkjet end corresponding to the basic color ink in the color spraying equipment is detected to determine the cause of the color saturation of the basic color ink on the encapsulating material not meeting the preset saturation requirement. After eliminating the reason that causes the color saturation of the base color ink on the encapsulating material to not meet the preset saturation requirement, the color spraying device is controlled to spray and print the step block pattern in the step block image on a new second printing medium until the color saturation of each base color ink on the encapsulating material meets the preset saturation requirement, and then the color spraying device is controlled to spray and print the test pattern in each test image on a third printing medium based on a plurality of test images and subsequent steps.

6. The method of claim 4, wherein, The test pattern includes a line pattern with different line thicknesses, a character pattern with different font sizes, and a color superposition pattern.

7. The method of claim 1, wherein, The target color value is configured with a corresponding white ink amount percentage based on the lightness of the calibration color corresponding to the target color value, and the method comprises the following steps of: The target color value is configured with a corresponding white ink amount percentage based on the lightness of the calibration color corresponding to the target color value, and the method comprises the following steps of: The target color value is configured with a corresponding white ink amount percentage based on the lightness of the calibration color corresponding to the target color value, and the method comprises the following steps of:

8. The method of claim 2, wherein, The method further comprises the following steps of: After receiving the to-be-printed image, the color spraying device is controlled to determine the color performance corresponding to each color in the to-be-printed image in the color calibration printing configuration file; The target color value corresponding to the color performance and the white ink amount percentage configured for the target color value are used as the inkjet printing color information after color calibration; The color spraying device is controlled to print the color on a to-be-printed medium using the inkjet printing color information; the to-be-printed medium is the encapsulating material laminated with a photovoltaic module.

9. A color calibration apparatus, characterized by, The device comprises: A first control module is configured to control a color spraying device to spray and print a gradual color block array on a first printing medium based on a step total ink amount percentage of a target ink; the step total ink amount percentage comprises a plurality of total ink amount percentages that increase in steps; the target ink comprises four base color inks, and the total ink amount percentage ranges from 0 to 400%; the total ink amount percentage is equal to the sum of the ink amount percentages corresponding to the four base colors; the gradual color block array comprises a hue gradient column sprayed based on each total ink amount percentage; the hue gradient column comprises a first color block with different hues at the total ink amount percentage; the first printing medium is an encapsulating material laminated with a photovoltaic module, and the transparency of the encapsulating material is within a preset transparency range; the gradual color block array is used to determine a peak value of the total ink amount percentage, and the peak value is determined according to the color step change in the gradual color block array; A first determination module is configured to determine the color performance of each target color value on the encapsulating material based on the peak value and a plurality of target color values. The generating module is configured to generate a color calibration printing configuration file based on the peak value and color performances of the target color values on the encapsulating material; and the color calibration printing configuration file is used for color calibration when performing inkjet printing on the encapsulating material laminated with the photovoltaic module. The target color value is composed of ink percentage of each base color ink in the calibration color corresponding to the target color value; and the first determining module is specifically configured to: For each target color value, the ink percentage of white ink corresponding to the target color value is configured based on the depth of the calibration color corresponding to the target color value; wherein the deeper the calibration color corresponding to the target color value, the less the ink percentage of white ink configured for the target color value; and the shallower the calibration color corresponding to the target color value, the more the ink percentage of white ink configured for the target color value. For each target color value, it is determined whether the sum of ink percentages of each base color ink contained in the target color value is greater than the peak value. When less than or equal to the peak value, the color spraying equipment is controlled to perform inkjet printing on a target printing medium to print out second color blocks corresponding to the target color values respectively based on the ink percentages of each base color ink contained in the target color value and the ink percentage of white ink configured for the target color value; the target printing medium is the encapsulating material laminated with the photovoltaic module. When greater than the peak value, the color spraying equipment is controlled to perform inkjet printing on a target printing medium to print out second color blocks corresponding to the target color values respectively based on the peak value and the ink percentage of white ink configured for the target color value; the color calibration printing configuration file further contains the ink percentage of white ink configured for each target color value. The color calibration instrument is controlled to scan the second color blocks corresponding to the target color values respectively on the target printing medium, match the target color values corresponding to the second color blocks with color performances of the second color blocks respectively, and obtain matching results corresponding to the target color values.

10. A color calibration system, characterized by, The system comprises a color spraying equipment and a color calibration instrument. The color spraying device is configured to control the color spraying device to spray ink to print a gradient color block array on a first printing medium based on a target ink step total ink amount percentage; the step total ink amount percentage includes a plurality of total ink amount percentages that increase in steps; the target ink includes four basic color inks, and the total ink amount percentage ranges from 0 to 400%; the total ink amount percentage is equal to the sum of the ink amount percentages of the four basic color inks; the gradient color block array includes a hue gradient column sprayed and printed based on each total ink amount percentage; the hue gradient column includes a first color block of different hues under the total ink amount percentage; the first printing medium is a packaging material laminated with a photovoltaic module, and the transparency of the packaging material is within a preset transparency range; and the gradient color block array is used to determine a peak value of the total ink amount percentage, and the peak value is determined according to the color step change in the gradient color block array. The color calibration instrument is configured to determine the color performance of each target color value on the packaging material based on the peak value and a plurality of target color values. The color calibration instrument is further configured to generate a color calibration printing configuration file based on the peak value and the color performance of each target color value on the packaging material; and the color calibration printing configuration file is used for color calibration when the packaging material laminated with the photovoltaic module is subjected to inkjet printing. The target color value is composed of the ink amount percentages of each basic color ink in the calibration color corresponding to the target color value; and when determining the color performance of each target color value on the packaging material based on the peak value and a plurality of target color values, the color calibration instrument includes the following steps. For each target color value, a corresponding white ink amount percentage is configured for the target color value based on the depth of the calibration color corresponding to the target color value; the deeper the calibration color corresponding to the target color value, the less white ink amount percentage is configured for the target color value; and the shallower the calibration color corresponding to the target color value, the more white ink amount percentage is configured for the target color value. For each target color value, it is determined whether the sum of the ink amount percentages of each basic color ink included in the target color value is greater than the peak value. When less than or equal to the peak value, the color spraying device is controlled to spray ink to print a second color block corresponding to the target color value on a target printing medium based on the ink amount percentages of each basic color ink included in the target color value and the white ink amount percentage configured for the target color value; and the target printing medium is the packaging material laminated with the photovoltaic module. When greater than the peak value, the color spraying device is controlled to spray ink to print a second color block corresponding to the target color value on a target printing medium based on the peak value and the white ink amount percentage configured for the target color value; and the color calibration printing configuration file further includes the white ink amount percentage configured for each target color value. The color calibration instrument is used for controlling the color calibration instrument to scan a second color block corresponding to each target color value of the inkjet printing on the target printing medium, matching the target color value corresponding to each second color block with the color performance of the second color block, and obtaining a matching result corresponding to each target color value.

Images