Ink monitoring and adjustment method and system for color printing

Abstract

The present application relates to the technical field of printing quality detection, and discloses an ink monitoring and adjustment method and system for color printing, the method comprising obtaining sample arrangement information to determine the arrangement position of the next color evaluation sample, obtaining the area to be printed and the color number to be printed of the next evaluation task from the detection allocation form; generating a color evaluation printing signal based on the arrangement position, the area to be printed and the color number to be printed of the next color evaluation sample and inputting it into a printing controller; receiving a detection in-place signal and sending it to an adjustable lamp to obtain light source parameters; obtaining a printing material model, and evaluating the theoretical light analysis parameters of the sample to be detected for the test light in combination with the area to be printed and the color number to be printed; obtaining actual light analysis parameters, and generating color evaluation abnormality information when the deviation rate of the actual light analysis parameters relative to the theoretical light analysis parameters is greater than a preset deviation threshold; the present application has the effect of reducing the maintenance cost of hardware facilities for printing quality detection.

Description

Technical Field

[0001] The present application relates to the technical field of printing quality detection, and in particular to an ink monitoring and adjustment method and system for color printing. Background Art

[0002] In the industrial printing process, the printing efficiency is relatively high, so it is usually necessary to regularly inspect the quality of printed products in order to improve the timeliness of the discovery of printing quality problems, so as to facilitate timely discovery, stopping printing and troubleshooting when printing quality problems occur; the current detection method for printing quality problems is mainly to photograph the printed products to be inspected by imaging equipment, and use image processing algorithms to process the printed product images to identify possible quality problems of the printed products to be inspected. However, the detection of printed products to be inspected by image processing algorithms has high requirements for imaging equipment and lighting conditions, and the image processing algorithms are relatively complex, and the computer equipment running the image processing algorithms is also required to be high; therefore, the above-mentioned related technologies have the problem of high maintenance costs for printing quality detection hardware facilities. Summary of the invention

[0003] In order to reduce the maintenance cost of printing quality detection hardware facilities, the present application provides an ink monitoring and adjustment method and system for color printing.

[0004] The first invention objective of this application is achieved by adopting the following technical solution:

[0005] Ink monitoring and adjustment method for color printing, including:

[0006] Obtaining sample arrangement information to determine the arrangement position of the next color evaluation sample, and obtaining the to-be-printed area and the to-be-printed color number corresponding to the next evaluation task from a preset detection allocation form;

[0007] Generate a color evaluation printing signal based on the arrangement position of the next color evaluation sample, the area to be printed and the color number to be printed, and input it to the printing controller to print the color block pattern to be detected on the color evaluation sample to obtain the sample to be detected;

[0008] Receive a detection position signal and send it to the adjustable lamp to control the adjustable lamp to emit test light and obtain light source parameters of the test light;

[0009] Obtain the printing material model, and evaluate the theoretical light analysis parameters of the sample to be tested for the test light based on the to-be-printed area, the to-be-printed color number and the printing material model corresponding to the sample to be tested;

[0010] Acquire actual light analysis parameters of the sample to be tested, and generate color evaluation abnormality information when the deviation rate of the actual light analysis parameters relative to the theoretical light analysis parameters is greater than a preset deviation threshold;

[0011] The sample arrangement information refers to information used to record the arrangement positions of several color evaluation samples in the paper to be printed; the sample to be tested refers to a color evaluation sample printed with a color block pattern to be tested; the color evaluation sample is provided with several color band areas; the light analysis parameter refers to a parameter determined by analyzing the light reflected by the sample to be tested on the test light.

[0012] By adopting the above technical solution, the sample arrangement information is obtained to determine the arrangement position of the next color evaluation sample in the paper to be printed, and the area to be printed and the color number to be printed corresponding to the next evaluation task are obtained from the preset detection allocation form, so as to determine the color number type and the corresponding printing area required to be detected for the next evaluation task; based on the arrangement position, the area to be printed and the color number to be printed of the next color evaluation sample, a color evaluation printing signal is generated and input into the printing controller, so that when the color evaluation sample is transmitted to the printer body, the printer body is controlled to print the color block pattern to be detected on the color evaluation sample, so as to obtain the sample to be detected, so as to further detect the printing effect of the printer on several color numbers to be printed; when the sample to be detected is input into the light detection cabin, the detection position signal is received and sent to the adjustable lamp, so as to control the adjustable lamp to emit test light to illuminate the sample to be detected, and obtain the test light. The light source parameters of the light are obtained for subsequent analysis of the theoretical reflection of the test light by the sample to be tested; the printing material model is obtained, and the theoretical reflection effect of the test light by the sample to be tested is evaluated based on the to-be-printed area, the to-be-printed color number and the printing material model corresponding to the sample to be tested, so as to obtain the theoretical light analysis parameters; the actual light analysis parameters of the sample to be tested are obtained from the detection sensor and compared with the theoretical light analysis parameters. When the deviation rate of the actual light analysis parameters relative to the theoretical light analysis parameters is greater than the preset deviation threshold, it is considered that the actual reflection effect of the test light by the sample to be tested deviates greatly from the theoretical reflection effect, and thus there is a printing abnormality, and color evaluation abnormality information is generated so that the management personnel can be informed of the situation in time and intervene to deal with the printing color abnormality fault. The printing color abnormality is detected by the reflection effect of the test light by the sample to be tested, thereby reducing the maintenance cost of the printing quality detection hardware facilities.

[0013] In a preferred example of the present application: the sample arrangement information is obtained to determine the arrangement position of the next color evaluation sample, and the area to be printed and the color number to be printed corresponding to the next evaluation task are obtained from the preset detection allocation form:

[0014] The ink types include three basic color inks and several special color inks; the color evaluation sample is associated with a sample identification; the detection allocation form records the areas to be printed and the color numbers to be printed corresponding to several evaluation tasks; the color evaluation sample is a new paper to be printed or a recycled sample to be tested whose unprinted area is larger than the area to be printed, wherein the area to be printed is the unprinted area of ​​the color evaluation sample; each printing color number corresponds to a single ink type and a combination of several ink types.

[0015] By adopting the above technical scheme, the ink types include three basic color inks for printing a variety of different colors through different ratios, and the ink types also include several special color inks for printing colors that cannot be formed by basic color inks; the color evaluation sample is associated with a sample identification, which is convenient for subsequent distinguishing different color evaluation samples and matching evaluation tasks; the color evaluation sample is a new paper to be printed or a recycled sample to be tested whose unprinted area is larger than the area to be printed, wherein the area to be printed of the color evaluation sample is the unprinted area of ​​the color evaluation sample, so as to reduce the use of new paper to be printed by recycling the sample to be tested and setting the area to be printed on the recycled sample to be tested next to the printing area, which is helpful to environmental protection; each color number to be printed corresponds to a single ink type and a combination of several ink types, so that quality inspection can be performed on various colors printed by the printing press.

[0016] In a preferred example of the present application, the method of obtaining the printing material model and evaluating the theoretical light analysis parameters of the sample to be tested for the test light based on the to-be-printed area, the to-be-printed color number and the printing material model corresponding to the sample to be tested includes:

[0017] Obtaining a printing material model, and matching a corresponding target light analysis experimental parameter set in an experimental parameter library based on the printing material model;

[0018] Based on the to-be-printed color number, to-be-printed area, printed color number, printed area and target light analysis experimental parameter set corresponding to the to-be-tested sample, the theoretical light analysis parameters of the to-be-tested sample for the test light are evaluated;

[0019] The experimental parameter library stores several optical analysis experimental parameter sets; the optical analysis experimental parameter sets record the local theoretical optical analysis parameters of a specific model of printing material in the unprinted area and the area corresponding to the printed pattern of different color numbers to be printed during the printer's factory standard experiment; the printed color number refers to the printing color number and printing area of ​​the color block pattern to be tested corresponding to the historical evaluation task of the sample to be tested.

[0020] By adopting the above technical solution, the printing material model is obtained, and the corresponding target light analysis experimental parameter set is matched in the experimental parameter library based on the printing material model, so as to subsequently determine the local theoretical light analysis parameters of the printing material model corresponding to the sample to be tested in the unprinted area and the area corresponding to the printed pattern of different color numbers to be printed; based on the color number to be printed, the area to be printed, the printed color number, the printed area and the target light analysis experimental parameter set corresponding to the sample to be tested, the theoretical light analysis parameters of the sample to be tested as a whole for the test light are evaluated.

[0021] In a preferred example of the present application: the optical analysis parameters include temperature values ​​of several points in the sample to be detected and spectral spectrum parameters of each color block pattern to be detected; wherein, in the theoretical optical analysis parameters, the temperature values ​​of all points in the same color block pattern to be detected are equal.

[0022] By adopting the above technical scheme, the optical analysis parameters include the temperature values ​​of multiple points in the sample to be detected and the spectral parameters of each color block pattern to be detected, wherein the uniformity of the ink spraying amount and the degree of clogging are judged according to the deviation of the temperature values ​​of several points in the same color block pattern to be detected in the sample to be detected, so as to troubleshoot printer failures such as nozzle clogging or abnormal ink fluidity; and the color characteristic values ​​of each color block pattern to be detected are judged according to the spectral parameters of each color block pattern to be detected.

[0023] In a preferred example of the present application, the actual light analysis parameters of the sample to be tested are obtained, and when the deviation rate of the actual light analysis parameters relative to the theoretical light analysis parameters is greater than a preset deviation threshold, the color evaluation abnormality information is generated, including:

[0024] Acquire actual light analysis parameters of the sample to be detected, and when the deviation rate of the mean of each temperature value in any color block pattern to be detected in the actual light analysis parameters relative to the mean of the temperature value in the corresponding color block pattern to be detected in the theoretical light analysis parameters is greater than a preset deviation threshold, generate color evaluation abnormality information of abnormal inkjet amount;

[0025] When the deviation rate of the spectral spectrum parameters of any color block pattern to be detected in the actual light analysis parameters relative to the spectral spectrum parameters of the corresponding color block pattern to be detected in the theoretical light analysis parameters is greater than a preset deviation threshold, color assessment abnormality information of color accuracy abnormality is generated;

[0026] When the variance of each temperature value in any color block pattern to be detected in the actual light analysis parameter is greater than a preset variance threshold, color evaluation abnormality information of abnormal inkjet uniformity is generated.

[0027] By adopting the above technical solution, by comparing the difference between the actual light analysis parameters and the theoretical light analysis parameters, it is possible to identify whether there is a printer failure such as abnormal inkjet volume, abnormal color accuracy, and abnormal inkjet uniformity, thereby obtaining color evaluation abnormality information, which makes it easy for maintenance personnel to know the type of printer failure in a timely manner and perform targeted maintenance.

[0028] The second invention objective of this application is achieved by the following technical solution:

[0029] An ink monitoring and adjustment system for color printing comprises a printer body, a light detection cabin and a detection processor, wherein the light detection cabin is provided with a detection feed port and a detection discharge port, wherein the detection feed port is connected to the printing discharge port of the printer body, a positioning fixture for positioning a sample to be detected is provided at the bottom of the light detection cabin, an adjustable lamp for irradiating the sample to be detected and a detection sensor for detecting light analysis parameters of the sample to be detected are provided in the light detection cabin, the detection processor is electrically connected to the printer body and the light detection cabin, and is applied to any of the above-mentioned ink monitoring and adjustment methods for color printing, comprising:

[0030] The evaluation task analysis module is used to obtain the sample arrangement information to determine the arrangement position of the next color evaluation sample, and obtain the to-be-printed area and the to-be-printed color number corresponding to the next evaluation task from the preset detection allocation form;

[0031] A sample printing module to be detected is used to generate a color evaluation printing signal based on the arrangement position of the next color evaluation sample, the area to be printed and the color number to be printed, and input it to the printing controller to print the color block pattern to be detected on the color evaluation sample to obtain the sample to be detected;

[0032] A test light parameter acquisition module is used to receive a detection position signal and send it to the adjustable lamp to control the adjustable lamp to emit test light and obtain light source parameters of the test light;

[0033] Theoretical light analysis parameter evaluation module, used to obtain the printing material model, and evaluate the theoretical light analysis parameters of the sample to be tested for the test light based on the to-be-printed area, to-be-printed color number and printing material model corresponding to the sample to be tested;

[0034] A color evaluation abnormality information generating module is used to obtain actual light analysis parameters of the sample to be tested, and generate color evaluation abnormality information when the deviation rate of the actual light analysis parameters relative to the theoretical light analysis parameters is greater than a preset deviation threshold;

[0035] The sample arrangement information refers to information used to record the arrangement position of the color evaluation sample in the paper to be printed; the sample to be tested refers to a color evaluation sample printed with a color block pattern to be tested; the color evaluation sample is provided with a plurality of color band areas; the light analysis parameter refers to a parameter determined by analyzing the light reflected by the sample to be tested on the test light.

[0036] By adopting the above technical solution, the printer body is connected to a light detection chamber so that the adjustable lamp in the light detection chamber can be used to emit test light that meets specific light source parameters, and the detection sensor is used to detect the absorption or reflection of the test light by the sample to be detected to obtain actual light analysis parameters, and the actual light analysis parameters are compared with the theoretical light analysis parameters to determine whether there is a printing abnormality in the color block pattern to be detected in the sample to be detected. If so, the type of printing abnormality can be further analyzed.

[0037] In a preferred example of the present application: the detection sensor includes a thermal imager and a spectrophotometer for detecting each color block pattern to be detected.

[0038] By adopting the above technical solution, the thermal imager can easily measure the temperature values ​​of multiple points on the sample to be tested at one time, so as to judge the uniformity of ink spraying amount and the degree of blockage according to the deviation of the temperature values ​​of several points in the same color block pattern to be tested in the sample to be tested, so as to troubleshoot printer failures such as nozzle blockage or abnormal ink fluidity; and judge the color characteristic value of each color block pattern to be tested according to the spectral spectrum parameters of each color block pattern to be tested.

[0039] In a preferred example of the present application: the inner wall of the light detection chamber is provided with a light absorbing layer.

[0040] By adopting the above technical solution, a light absorbing layer is set on the inner wall of the light detection chamber to minimize the heat generated by the light source reflected from the surface of the sample to be detected and then re-irradiated on the surface of the sample to be detected, so as to reduce errors and increase the probability of detecting abnormal printing quality.

[0041] The third invention objective of this application is achieved by the following technical solution:

[0042] A computer device comprises a memory, a processor and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the steps of the ink monitoring and adjusting method for color printing are implemented.

[0043] The fourth invention objective of this application is achieved by the following technical solution:

[0044] A computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the ink monitoring and adjustment method for color printing are implemented.

[0045] In summary, the present application includes at least one of the following beneficial technical effects:

[0046] 1. Obtain the arrangement information of the sample sheets to determine the arrangement position of the next color evaluation sample sheet in the paper to be printed, obtain the area to be printed and the color number to be printed corresponding to the next evaluation task from the preset detection allocation form, so as to determine the color number type and the corresponding printing area required to be detected for the next evaluation task; generate a color evaluation printing signal based on the arrangement position, area to be printed and color number to be printed of the next color evaluation sample sheet and input it to the printing controller, so as to control the printer body to print the color block pattern to be detected on the color evaluation sample sheet when the color evaluation sample sheet is transmitted to the printer body, thereby obtaining the sample sheet to be detected, so as to further detect the printing effect of the printer on several color numbers to be printed; when the sample sheet to be detected is input into the light detection cabin, receive the detection position signal and send it to the adjustable lamp, so as to control the adjustable lamp to emit test light to illuminate the sample sheet to be detected, and obtain the light source of the test light. Parameters are obtained for subsequent analysis of the theoretical reflection of the test light by the sample to be tested; the printing material model is obtained, and the theoretical reflection effect of the test light by the sample to be tested is evaluated based on the to-be-tested area, the to-be-printed color number and the printing material model corresponding to the sample to be tested, so as to obtain the theoretical light analysis parameters; the actual light analysis parameters of the sample to be tested are obtained from the detection sensor and compared with the theoretical light analysis parameters. When the deviation rate of the actual light analysis parameters relative to the theoretical light analysis parameters is greater than the preset deviation threshold, it is considered that the deviation between the actual reflection effect of the test light by the sample to be tested and the theoretical reflection effect is large, so there is a printing abnormality, and color evaluation abnormality information is generated so that the management personnel can be informed of the situation in time and intervene to deal with the printing color abnormality fault. The printing color abnormality is detected by the reflection effect of the test light by the sample to be tested, which reduces the maintenance cost of the printing quality detection hardware facilities.

[0047] 2. The ink types include three basic color inks, which are used to print a variety of different colors in different proportions. The ink types also include several special color inks, which are used to print colors that cannot be formed by basic color inks. The color evaluation samples are associated with sample identification to facilitate the subsequent distinction between different color evaluation samples and matching evaluation tasks. The color evaluation samples are new paper to be printed or recycled samples to be tested whose unprinted area is larger than the area to be printed, wherein the area to be printed of the color evaluation sample is the unprinted area of ​​the color evaluation sample, so as to reduce the use of new paper to be printed by recycling the samples to be tested and setting the area to be printed on the recycled samples to be tested next to the printed area, which is helpful for environmental protection. Each color number to be printed corresponds to a single ink type and a combination of several ink types, so that quality inspection can be performed on various colors printed by the printing press.

[0048] 3. The printer body is connected to a light detection chamber so that the adjustable lamp in the light detection chamber can be used to emit test light that meets specific light source parameters, and the detection sensor can be used to detect the absorption or reflection of the test light by the sample to be tested to obtain actual light analysis parameters, and the actual light analysis parameters can be compared with the theoretical light analysis parameters to determine whether there is any printing abnormality of the color block pattern to be tested in the sample to be tested. If so, the type of printing abnormality can be further analyzed. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 This is a flow chart of the ink monitoring and adjustment method for color printing in Example 1 of the present application.

[0050] Figure 2 It is a principle block diagram of the ink monitoring and adjustment system for color printing in the second embodiment of the present application.

[0051] Figure 3 It is a schematic diagram of the equipment in Example 3 of the present application. DETAILED DESCRIPTION

[0052] The following is combined with Figures 1 to 3 This application is described in further detail. Embodiment 1

[0053] Reference Figure 1 The present application discloses an ink monitoring and adjustment method for color printing, which specifically comprises the following steps:

[0054] S10: Acquire sample arrangement information to determine the arrangement position of the next color evaluation sample, and obtain the to-be-printed area and the to-be-printed color number corresponding to the next evaluation task from a preset detection allocation form.

[0055] In this embodiment, the sample arrangement information refers to information for recording the arrangement positions of a plurality of color evaluation samples in the paper to be printed.

[0056] The ink types include three basic color inks and several special color inks; the color evaluation sample is associated with a sample identification; the detection allocation form records the areas to be printed and the color numbers to be printed corresponding to several evaluation tasks; the color evaluation sample is a new paper to be printed or a recycled sample to be tested whose unprinted area is larger than the area to be printed, wherein the area to be printed is the unprinted area of ​​the color evaluation sample; each printing color number corresponds to a single ink type and a combination of several ink types.

[0057] Among them, the ink types include three basic color inks, which are used to print a variety of different colors through different ratios. The ink types also include several special color inks, which are used to print colors that cannot be formed by basic color inks; the color evaluation samples are associated with sample identification, which is convenient for subsequent distinguishing different color evaluation samples and matching evaluation tasks; the color evaluation samples are new paper to be printed or recycled samples to be tested whose unprinted area is larger than the area to be printed, wherein the area to be printed of the color evaluation samples is the unprinted area of ​​the color evaluation samples, so as to reduce the use of new paper to be printed by recycling the samples to be tested and setting the area to be printed on the recycled samples to be tested next to the printed area, which is helpful to environmental protection; each color number to be printed corresponds to a single ink type and a combination of several ink types, so that quality inspection can be performed on various colors printed by the printing press.

[0058] Specifically, the sample arrangement information is obtained to determine the arrangement position of the next color evaluation sample in the paper to be printed, and the area to be printed and the color number to be printed corresponding to the next evaluation task are obtained from the preset detection allocation form, so as to determine the color number type and the corresponding printing area required to be detected for the next evaluation task.

[0059] S20: Generate a color evaluation printing signal based on the arrangement position, the area to be printed and the color number to be printed of the next color evaluation sample and input it to the printing controller to print the color block pattern to be detected on the color evaluation sample to obtain the sample to be detected.

[0060] In this embodiment, the sample to be detected refers to a color evaluation sample printed with a color block pattern to be detected; the color evaluation sample is provided with a plurality of color band areas.

[0061] Specifically, a color evaluation printing signal is generated based on the arrangement position of the next color evaluation sample, the area to be printed and the color number to be printed and input into the printing controller, so that when the color evaluation sample is transmitted to the printer body, the printer body is controlled to print the color block pattern to be detected on the color evaluation sample, thereby obtaining the sample to be detected, so as to further detect the printing effect of the printer on several color numbers to be printed.

[0062] S30: receiving a detection position signal and sending it to the adjustable lamp to control the adjustable lamp to emit a test light and obtain light source parameters of the test light.

[0063] Specifically, when the sample to be inspected is input into the light inspection cabin, a detection position signal is received and sent to the adjustable lamp to control the adjustable lamp to emit test light to illuminate the sample to be inspected, and the light source parameters of the test light are obtained for subsequent analysis of the theoretical reflection of the sample to be inspected to the test light.

[0064] S40: Obtain the printing material model, and evaluate the theoretical light analysis parameters of the sample to be tested for the test light based on the to-be-printed area, the to-be-printed color number and the printing material model corresponding to the sample to be tested.

[0065] In this embodiment, the light analysis parameter refers to a parameter determined by analyzing the light reflected by the test light from the sample to be tested.

[0066] Specifically, the printing material model is obtained, and the theoretical reflection effect of the sample to be tested for the test light is evaluated based on the to-be-printed area, the to-be-printed color number and the printing material model corresponding to the sample to be tested, so as to obtain the theoretical light analysis parameters.

[0067] Wherein, in step S40, it includes:

[0068] S41: Obtain a printing material model, and match a corresponding target light analysis experimental parameter set in an experimental parameter library based on the printing material model.

[0069] In this embodiment, the experimental parameter library stores several optical analysis experimental parameter sets; the optical analysis experimental parameter sets record the local theoretical optical analysis parameters of the unprinted area and the area corresponding to the printed pattern of different color numbers of a specific model of printing material during the factory standard experiment of the printer.

[0070] Specifically, the printing material model is obtained, and the corresponding target light analysis experimental parameter set is matched in the experimental parameter library based on the printing material model, so as to subsequently determine the local theoretical light analysis parameters of the printing material model corresponding to the sample to be tested in the unprinted area and the area corresponding to the printed pattern with different color numbers to be printed.

[0071] S42: Based on the to-be-printed color number, to-be-printed area, printed color number, printed area and target light analysis experimental parameter set corresponding to the to-be-tested sample, the theoretical light analysis parameters of the to-be-tested sample for the test light are evaluated.

[0072] In this embodiment, the printed color number refers to the printed color number and printed area of ​​the color block pattern to be detected corresponding to the historical evaluation task of the sample to be detected.

[0073] Specifically, based on the color number to be printed, the area to be printed, the printed color number, the printed area and the target light analysis experimental parameter set corresponding to the sample to be tested, the theoretical light analysis parameters of the entire sample to be tested for the test light are evaluated.

[0074] S50: Acquire actual light analysis parameters of the sample to be detected, and generate color evaluation abnormality information when the deviation rate of the actual light analysis parameters relative to the theoretical light analysis parameters is greater than a preset deviation threshold.

[0075] Specifically, the actual light analysis parameters of the sample to be tested are obtained from the detection sensor and compared with the theoretical light analysis parameters. When the deviation rate of the actual light analysis parameters relative to the theoretical light analysis parameters is greater than the preset deviation threshold, it is considered that the deviation between the actual reflection effect of the test light of the sample to be tested and the theoretical reflection effect is large, and thus there is a printing abnormality. Color evaluation abnormality information is generated so that the management personnel can be informed of the situation in time and intervene to deal with the printing color abnormality fault. The printing color abnormality is detected by the reflection effect of the test light of the sample to be tested, thereby reducing the maintenance cost of the printing quality detection hardware facilities.

[0076] Wherein, in step S50, it includes:

[0077] S51: Acquire actual light analysis parameters of the sample to be detected. When the deviation rate of the mean value of each temperature value in any color block pattern to be detected in the actual light analysis parameters relative to the mean value of the temperature value in the corresponding color block pattern to be detected in the theoretical light analysis parameters is greater than a preset deviation threshold, generate color evaluation abnormality information of abnormal inkjet amount.

[0078] S52: When the deviation rate of the spectral spectrum parameters of any color block pattern to be detected in the actual light analysis parameters relative to the spectral spectrum parameters of the corresponding color block pattern to be detected in the theoretical light analysis parameters is greater than a preset deviation threshold, color assessment abnormality information of color accuracy abnormality is generated.

[0079] S53: When the variance of each temperature value in any color block pattern to be detected in the actual light analysis parameter is greater than a preset variance threshold, color evaluation abnormality information of abnormal inkjet uniformity is generated.

[0080] Specifically, by comparing the difference between actual light analysis parameters and theoretical light analysis parameters, it is possible to identify whether there are printer failures such as abnormal inkjet volume, abnormal color accuracy, and abnormal inkjet uniformity, thereby obtaining color evaluation abnormality information, which makes it easy for maintenance personnel to promptly learn the type of printer failure and perform targeted maintenance.

[0081] It should be understood that the serial numbers of the steps in the above embodiments do not imply a sequence of execution. The execution sequence of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application. Embodiment 2

[0082] An ink monitoring and regulating system for color printing comprises a printer body, a light detection cabin and a detection processor, wherein the light detection cabin is provided with a detection feed port and a detection discharge port, the detection feed port is connected to the printing discharge port of the printer body, a positioning fixture for positioning a sample to be detected is provided at the bottom of the light detection cabin, an adjustable lamp for irradiating the sample to be detected and a detection sensor for detecting light analysis parameters of the sample to be detected are provided in the light detection cabin, and the detection processor is electrically connected to the printer body and the light detection cabin.

[0083] The printer body is connected to a light detection chamber so that the adjustable lamp in the light detection chamber can be used to emit test light that meets specific light source parameters, and the detection sensor can be used to detect the absorption or reflection of the test light by the sample to be tested to obtain actual light analysis parameters, and the actual light analysis parameters can be compared with the theoretical light analysis parameters to determine whether there is any printing abnormality in the color block pattern to be tested in the sample to be tested. If so, the type of printing abnormality can be further analyzed.

[0084] The detection sensor includes a thermal imager and a spectrophotometer for detecting each color block pattern to be detected.

[0085] Among them, the thermal imager is convenient for measuring the temperature values ​​of multiple points on the sample to be tested at one time, so as to judge the uniformity of ink spraying amount and the degree of blockage according to the deviation of the temperature values ​​of several points in the same color block pattern to be tested in the sample to be tested, so as to troubleshoot printer failures such as nozzle blockage or abnormal ink fluidity; and judge the color characteristic value of each color block pattern to be tested according to the spectral spectrum parameters of each color block pattern to be tested.

[0086] The inner wall of the light detection chamber is provided with a light absorbing layer.

[0087] A light absorbing layer is arranged on the inner wall of the light detection chamber to minimize the heat generated by the light source reflected from the surface of the sample to be detected and then re-irradiated on the surface of the sample to be detected, so as to reduce the error and increase the probability of detecting abnormal printing quality.

[0088] The detection processor is applied to any of the above-mentioned ink monitoring and adjustment methods for color printing.

[0089] like Figure 2 As shown, the detection processor includes an evaluation task analysis module, a sample printing module to be detected, a test light parameter acquisition module, a theoretical light analysis parameter evaluation module and a color evaluation abnormality information generation module. The detailed description of each functional module is as follows:

[0090] The evaluation task analysis module is used to obtain the sample arrangement information to determine the arrangement position of the next color evaluation sample, and obtain the to-be-printed area and the to-be-printed color number corresponding to the next evaluation task from the preset detection allocation form;

[0091] A sample printing module to be detected is used to generate a color evaluation printing signal based on the arrangement position of the next color evaluation sample, the area to be printed and the color number to be printed, and input it to the printing controller to print the color block pattern to be detected on the color evaluation sample to obtain the sample to be detected;

[0092] A test light parameter acquisition module is used to receive a detection position signal and send it to the adjustable lamp to control the adjustable lamp to emit test light and obtain light source parameters of the test light;

[0093] Theoretical light analysis parameter evaluation module, used to obtain the printing material model, and evaluate the theoretical light analysis parameters of the sample to be tested for the test light based on the to-be-printed area, to-be-printed color number and printing material model corresponding to the sample to be tested;

[0094] The color evaluation abnormality information generation module is used to obtain the actual light analysis parameters of the sample to be tested, and generate color evaluation abnormality information when the deviation rate of the actual light analysis parameters relative to the theoretical light analysis parameters is greater than a preset deviation threshold.

[0095] For the specific limitations of the ink monitoring and adjustment system for color printing, please refer to the limitations of the ink monitoring and adjustment method for color printing mentioned above, which will not be repeated here; the various modules in the above-mentioned ink monitoring and adjustment system for color printing can be implemented in whole or in part through software, hardware and their combination; the above-mentioned modules can be embedded in or independent of the processor in the computer device in the form of hardware, or can be stored in the memory of the computer device in the form of software, so that the processor can call and execute the corresponding operations of the above-mentioned modules. Embodiment 3

[0096] A computer device, which may be a server, may have an internal structure as shown in Figure 3 As shown. The computer device includes a processor, a memory, a network interface and a database connected through a system bus. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The database of the computer device is used to store data such as sample layout information. The network interface of the computer device is used to communicate with an external terminal through a network connection. When the computer program is executed by the processor, an ink monitoring and adjustment method for color printing is implemented.

[0097] In one embodiment, a computer device is provided, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the following steps when executing the computer program:

[0098] S10: Acquire sample arrangement information to determine the arrangement position of the next color evaluation sample, and obtain the to-be-printed area and the to-be-printed color number corresponding to the next evaluation task from a preset detection allocation form;

[0099] S20: generating a color evaluation printing signal based on the arrangement position of the next color evaluation sample, the area to be printed and the color number to be printed, and inputting the signal to the printing controller to print the color block pattern to be detected on the color evaluation sample to obtain the sample to be detected;

[0100] S30: receiving a detection position signal and sending it to the adjustable lamp to control the adjustable lamp to emit a test light and obtain light source parameters of the test light;

[0101] S40: Obtaining a printing material model, and evaluating theoretical light analysis parameters of the sample to be tested for the test light based on the to-be-printed area, the to-be-printed color number, and the printing material model corresponding to the sample to be tested;

[0102] S50: Acquire actual light analysis parameters of the sample to be detected, and generate color evaluation abnormality information when the deviation rate of the actual light analysis parameters relative to the theoretical light analysis parameters is greater than a preset deviation threshold.

[0103] In one embodiment, a computer readable storage medium is provided, on which a computer program is stored, and when the computer program is executed by a processor, the following steps are implemented:

[0104] S10: Acquire sample arrangement information to determine the arrangement position of the next color evaluation sample, and obtain the to-be-printed area and the to-be-printed color number corresponding to the next evaluation task from a preset detection allocation form;

[0105] S20: generating a color evaluation printing signal based on the arrangement position of the next color evaluation sample, the area to be printed and the color number to be printed, and inputting the signal to the printing controller to print the color block pattern to be detected on the color evaluation sample to obtain the sample to be detected;

[0106] S30: receiving a detection position signal and sending it to the adjustable lamp to control the adjustable lamp to emit a test light and obtain light source parameters of the test light;

[0107] S40: Obtaining a printing material model, and evaluating theoretical light analysis parameters of the sample to be tested for the test light based on the to-be-printed area, the to-be-printed color number, and the printing material model corresponding to the sample to be tested;

[0108] S50: Acquire actual light analysis parameters of the sample to be detected, and generate color evaluation abnormality information when the deviation rate of the actual light analysis parameters relative to the theoretical light analysis parameters is greater than a preset deviation threshold.

[0109] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided in this application may include non-volatile and / or volatile memory. Non-volatile memory may include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory may include random access memory (RAM) or external cache memory. As an illustration and not limitation, RAM is available in many forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink), DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).

[0110] Those skilled in the art can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example. In actual applications, the above-mentioned functions can be distributed and completed by different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above.

[0111] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, it should be understood by those skilled in the art that the technical solutions described in the aforementioned embodiments may still be modified, or some of the features thereof may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. An ink monitoring and adjustment method for color printing, characterized in that: include: Obtaining sample arrangement information to determine the arrangement position of the next color evaluation sample, and obtaining the to-be-printed area and the to-be-printed color number corresponding to the next evaluation task from a preset detection allocation form; Generate a color evaluation printing signal based on the arrangement position of the next color evaluation sample, the area to be printed and the color number to be printed, and input it to the printing controller to print the color block pattern to be detected on the color evaluation sample to obtain the sample to be detected; Receive a detection position signal and send it to the adjustable lamp to control the adjustable lamp to emit test light and obtain light source parameters of the test light; Obtain the printing material model, and evaluate the theoretical light analysis parameters of the sample to be tested for the test light based on the to-be-printed area, the to-be-printed color number and the printing material model corresponding to the sample to be tested; Acquire actual light analysis parameters of the sample to be tested, and generate color evaluation abnormality information when the deviation rate of the actual light analysis parameters relative to the theoretical light analysis parameters is greater than a preset deviation threshold; The sample arrangement information refers to information used to record the arrangement positions of a plurality of color evaluation samples in the paper to be printed; the sample to be tested refers to a color evaluation sample printed with a color block pattern to be tested; the color evaluation sample is provided with a plurality of color band areas; the light analysis parameter refers to a parameter determined by analyzing the light reflected by the sample to be tested on the test light; The optical analysis parameters include the temperature values ​​of several points in the sample to be detected and the spectroscopic spectrum parameters of each color block pattern to be detected; wherein the temperature values ​​of all points in the same color block pattern to be detected in the theoretical optical analysis parameters are equal; The step of obtaining the actual light analysis parameters of the sample to be tested and generating color evaluation abnormality information when the deviation rate of the actual light analysis parameters relative to the theoretical light analysis parameters is greater than a preset deviation threshold includes: Acquire actual light analysis parameters of the sample to be detected, and when the deviation rate of the mean of each temperature value in any color block pattern to be detected in the actual light analysis parameters relative to the mean of the temperature value in the corresponding color block pattern to be detected in the theoretical light analysis parameters is greater than a preset deviation threshold, generate color evaluation abnormality information of abnormal inkjet amount; When the deviation rate of the spectral spectrum parameters of any color block pattern to be detected in the actual light analysis parameters relative to the spectral spectrum parameters of the corresponding color block pattern to be detected in the theoretical light analysis parameters is greater than a preset deviation threshold, color assessment abnormality information of color accuracy abnormality is generated; When the variance of each temperature value in any color block pattern to be detected in the actual light analysis parameter is greater than a preset variance threshold, color evaluation abnormality information of abnormal inkjet uniformity is generated.

2. The ink monitoring and adjustment method for color printing according to claim 1, characterized in that: The sample arrangement information is obtained to determine the arrangement position of the next color evaluation sample, and the area to be printed and the color number to be printed corresponding to the next evaluation task are obtained from the preset detection allocation form: The ink types include three basic color inks and several special color inks; the color evaluation sample is associated with a sample identification; the detection allocation form records the to-be-printed areas and to-be-printed color numbers corresponding to several evaluation tasks; the color evaluation sample is a new to-be-printed paper or a recycled to-be-tested sample with an unprinted area larger than the to-be-printed area, wherein the to-be-printed area is the unprinted area of ​​the color evaluation sample; Each of the printing color numbers corresponds to a single ink type and a combination of several ink types.

3. The ink monitoring and adjustment method for color printing according to claim 1, characterized in that: The obtaining of the printing material model and evaluating the theoretical light analysis parameters of the sample to be tested for the test light based on the to-be-printed area, the to-be-printed color number and the printing material model corresponding to the sample to be tested include: Obtaining a printing material model, and matching a corresponding target light analysis experimental parameter set in an experimental parameter library based on the printing material model; Based on the to-be-printed color number, to-be-printed area, printed color number, printed area and target light analysis experimental parameter set corresponding to the to-be-tested sample, the theoretical light analysis parameters of the to-be-tested sample for the test light are evaluated; The experimental parameter library stores several optical analysis experimental parameter sets; the optical analysis experimental parameter sets record the local theoretical optical analysis parameters of a specific model of printing material in the unprinted area and the area corresponding to the printed pattern of different color numbers to be printed during the printer's factory standard experiment; the printed color number refers to the printing color number and printing area of ​​the color block pattern to be tested corresponding to the historical evaluation task of the sample to be tested.

4. An ink monitoring and regulating system for color printing, characterized in that: The invention comprises a printer body, a light detection cabin and a detection processor, wherein the light detection cabin is provided with a detection feed port and a detection discharge port, wherein the detection feed port is connected to the printing discharge port of the printer body, a positioning fixture for positioning a sample to be detected is provided at the bottom of the light detection cabin, an adjustable lamp for irradiating the sample to be detected and a detection sensor for detecting light analysis parameters of the sample to be detected are provided in the light detection cabin, the detection processor is electrically connected to the printer body and the light detection cabin, and is applied to the ink monitoring and adjustment method for color printing according to any one of claims 1 to 3, comprising: The evaluation task analysis module is used to obtain the sample arrangement information to determine the arrangement position of the next color evaluation sample, and obtain the to-be-printed area and the to-be-printed color number corresponding to the next evaluation task from the preset detection allocation form; A sample printing module to be detected is used to generate a color evaluation printing signal based on the arrangement position of the next color evaluation sample, the area to be printed and the color number to be printed, and input it to the printing controller to print the color block pattern to be detected on the color evaluation sample to obtain the sample to be detected; A test light parameter acquisition module is used to receive a detection position signal and send it to the adjustable lamp to control the adjustable lamp to emit test light and obtain light source parameters of the test light; Theoretical light analysis parameter evaluation module, used to obtain the printing material model, and evaluate the theoretical light analysis parameters of the sample to be tested for the test light based on the to-be-printed area, to-be-printed color number and printing material model corresponding to the sample to be tested; A color evaluation abnormality information generating module is used to obtain actual light analysis parameters of the sample to be tested, and generate color evaluation abnormality information when the deviation rate of the actual light analysis parameters relative to the theoretical light analysis parameters is greater than a preset deviation threshold; The sample arrangement information refers to information used to record the arrangement position of the color evaluation sample in the paper to be printed; the sample to be tested refers to the color evaluation sample printed with the color block pattern to be tested; the color evaluation sample is provided with a plurality of color band areas; the light analysis parameter refers to the parameter determined by analyzing the light reflected by the sample to be tested on the test light; The optical analysis parameters include the temperature values ​​of several points in the sample to be detected and the spectroscopic spectrum parameters of each color block pattern to be detected; wherein the temperature values ​​of all points in the same color block pattern to be detected in the theoretical optical analysis parameters are equal; The step of obtaining the actual light analysis parameters of the sample to be tested and generating color evaluation abnormality information when the deviation rate of the actual light analysis parameters relative to the theoretical light analysis parameters is greater than a preset deviation threshold includes: Acquire actual light analysis parameters of the sample to be detected, and when the deviation rate of the mean of each temperature value in any color block pattern to be detected in the actual light analysis parameters relative to the mean of the temperature value in the corresponding color block pattern to be detected in the theoretical light analysis parameters is greater than a preset deviation threshold, generate color evaluation abnormality information of abnormal inkjet amount; When the deviation rate of the spectral spectrum parameters of any color block pattern to be detected in the actual light analysis parameters relative to the spectral spectrum parameters of the corresponding color block pattern to be detected in the theoretical light analysis parameters is greater than a preset deviation threshold, color assessment abnormality information of color accuracy abnormality is generated; When the variance of each temperature value in any color block pattern to be detected in the actual light analysis parameter is greater than a preset variance threshold, color evaluation abnormality information of abnormal inkjet uniformity is generated.

5. The ink monitoring and regulating system for color printing according to claim 4, characterized in that: The detection sensor comprises a thermal imager and a spectrophotometer for detecting each color block pattern to be detected.

6. The ink monitoring and regulating system for color printing according to claim 4, characterized in that: The inner wall of the light detection chamber is provided with a light absorbing layer.

7. A computer device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the steps of the ink monitoring and adjustment method for color printing as claimed in any one of claims 1 to 3 are implemented.

8. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the steps of the ink monitoring and adjustment method for color printing according to any one of claims 1 to 3 are implemented.

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