Inkjet Printing Color Difference Adjustment Method, Device and Equipment Based on Ink Dot Adjustment

Abstract

The present invention belongs to the technical field of printing devices, solves the technical problem of color difference caused by ink output differences of local nozzles in the prior art, which affects the printing image effect, and provides an inkjet printing color difference adjustment method, device, equipment and storage medium based on ink dot adjustment. The inkjet printing color difference adjustment method based on ink dot adjustment includes: controlling a print head to perform monochromatic printing to obtain a test image; acquiring color density difference information of the test image; processing original print data according to the color density difference information of the test image to obtain target print data; and controlling the print head to print an image to be printed according to the target print data. The present invention further includes a device, equipment and storage medium for executing the above method. By performing monochromatic test printing, the present invention adjusts the print data corresponding to the image in the abnormal area, eliminates the image color difference, and ensures the effect of the printed image.

Description

[0001] This application is a divisional application of the invention patent application with the title of "Inkjet Printing Color Difference Adjustment Method, Device, Equipment and Storage Medium", application number 202010603785.7, and filed on June 29, 2020. Technical Field

[0002] The present invention relates to the field of printing equipment, and in particular, to an inkjet printing color difference adjustment method, device and equipment based on ink dot adjustment. Background Art

[0003] Inkjet printing technology refers to a technology in which ink droplets are ejected onto a printing medium through nozzles on a print head to obtain an image or text.

[0004] As Figure 1 shown, in order to improve the ink dot density and printing efficiency of a printed image, a printer print head generally consists of multiple columns of nozzles; as Figure 2 shown, in order to increase the area that the print head can cover in one scan (i.e., the height that can be printed in each scan), each print head is composed of 4 small columns of nozzles spliced together. Due to the manufacturing differences of each hole of the nozzles, the ink volume ejected from each hole of the print head is not exactly the same, resulting in color differences in the printed image.

[0005] The prior art adjusts the color difference of the print head by adjusting the driving voltage (i.e., the driving waveform) of the print head. This method can only perform overall voltage regulation on one print head or one column of nozzles (i.e., between print heads, or between each column of nozzles), and cannot adjust the color difference of the printed image caused by the different characteristics of some nozzles, which affects the printing effect. Summary of the Invention

[0006] In view of this, embodiments of the present invention provide an inkjet printing color difference adjustment method, device and equipment based on ink dot adjustment to solve the technical problem that color differences caused by different ink outputs of local nozzles affect the effect of the printed image.

[0007] The technical solution adopted by the present invention is:

[0008] Embodiments of the present invention provide an inkjet printing color difference adjustment method based on ink dot adjustment. The method includes:

[0009] Controlling the print head to perform single-color printing to obtain a test image;

[0010] Obtaining color density difference information of the test image;

[0011] After processing the original print data according to the color density difference information of the test image, target print data is obtained, including: obtaining an abnormal image area corresponding to the color density difference information and print data corresponding to the abnormal image area; adjusting the ink amount of the inkjet dots of the print data corresponding to the abnormal image area, or adjusting the number of inkjet dots of the print data corresponding to the abnormal image area;

[0012] Controlling the print head to print the image to be printed according to the target print data.

[0013] Preferably, when printing with multiple types of the inkjet dots, the adjusting the number of the inkjet dots of the print data corresponding to the abnormal image area includes:

[0014] Obtaining the number of types n of the inkjet dots and the number of each type of the inkjet dots, where n is a positive integer;

[0015] Adjusting the number of at least one type of inkjet dots according to the color density of the abnormal image area.

[0016] Preferably, the adjusting the number of at least one type of inkjet dots according to the color density of the abnormal image area includes:

[0017] Obtaining the number of each type of inkjet dots in the color density abnormal area;

[0018] Obtaining the quantity adjustment ratio of each type of inkjet dots;

[0019] Adjusting the number of each type of inkjet dots respectively according to the quantity adjustment ratio of each type of inkjet dots.

[0020] Preferably, when printing with a single type of inkjet dot, the adjusting the number of the inkjet dots of the print data corresponding to the abnormal image area includes:

[0021] Obtaining the number of inkjet dots included in the abnormal image area;

[0022] Dividing the inkjet dots into several portions according to the number of inkjet dots included in the abnormal image area;

[0023] Reducing or increasing the same number of dots from each portion to adjust the number of inkjet dots corresponding to the abnormal image area.

[0024] Preferably, when printing with multiple types of the inkjet dots, the adjusting the ink amount of the inkjet dots of the print data corresponding to the abnormal image area includes:

[0025] Obtaining the number of types n of the inkjet dots, where n is a positive integer;

[0026] Adjust the ink amount of the inkjet dots by adjusting the types of the inkjet dots according to the color density of the abnormal image area.

[0027] Preferably, adjusting the ink amount of the inkjet dots corresponding to the print data of the abnormal image area includes:

[0028] Obtain the color density corresponding to the normal image area of the test image as the threshold ink amount density;

[0029] Compare the color density of the abnormal image area with the threshold ink amount density;

[0030] If the color density of the abnormal image area is greater than the threshold ink amount density, reduce the ink amount of the inkjet dots in the abnormal image area;

[0031] If the color density of the abnormal image area is less than the threshold ink amount density, increase the ink amount of the inkjet dots in the abnormal image area.

[0032] Preferably, the inkjet dots for printing the image to be printed include a first dot, a second dot, and a third dot; the ink amount of the first dot is greater than the ink amount of the second dot, and the ink amount of the second dot is greater than the ink amount of the third dot; if the color density of the abnormal image area is greater than the threshold ink amount density, reducing the ink amount of the inkjet dots in the abnormal image area includes:

[0033] If the abnormal image area is printed by the first dot, adjust the inkjet dots to the second dot and / or the third dot; if the abnormal image area is printed by the second dot, adjust the inkjet dots to the third dot.

[0034] If the color density of the abnormal image area is less than the threshold ink amount density, increasing the ink amount of the inkjet dots in the abnormal image area includes: if the abnormal image area is printed by the third dot, adjust the inkjet dots to the first dot and / or the second dot; if the abnormal image area is printed by the second dot, adjust the inkjet dots to the first dot. The present invention also provides a printing device, including:

[0035] A test printing module: used to control the print head to perform monochromatic printing to obtain a test image;

[0036] A test analysis module: used to obtain the color density difference information of the test image;

[0037] Data adjustment module: It is used to process the original print data according to the color concentration difference information of the test image to obtain the target print data, including: obtaining the abnormal image area corresponding to the color concentration difference information and the print data corresponding to the abnormal image area; adjusting the ink amount of the inkjet dots of the print data corresponding to the abnormal image area, or adjusting the number of inkjet dots of the print data corresponding to the abnormal image area;

[0038] Target printing module: It is used to control the print head to print the image to be printed according to the target print data.

[0039] The present invention also provides a printing device, including: at least one processor, at least one memory, and computer program instructions stored in the memory, which implement the method described in any one of the above when the computer program instructions are executed by the processor.

[0040] The present invention also provides a storage medium, on which computer program instructions are stored, and characterized in that the method described in any one of the above is implemented when the computer program instructions are executed by a processor.

[0041] In summary, the beneficial effects of the present invention are as follows:

[0042] An inkjet printing color difference adjustment method, device and equipment based on ink dot adjustment provided by the present invention are used to solve the technical problem that the color difference caused by the ink output difference of local nozzles affects the effect of the printed image.

[0043] Beneficial effect 1:

[0044] By performing monochromatic test printing on the print head and according to the color concentration difference information of the test image, the present invention can obtain which areas of the inkjet dots in the print head have inkjet concentrations that do not meet the requirements, and then adjust the print data corresponding to the abnormal area image to complete the adjustment of the ink amount of the inkjet in the abnormal image area, ensuring the effect of the printed image.

[0045] Beneficial effect 2:

[0046] By performing monochromatic test printing on the print head and according to the color concentration difference information of the test image, the present invention can obtain which areas of the inkjet dots in the print head have inkjet concentrations that do not meet the requirements, and then adjust the print data corresponding to the abnormal area image, eliminating the inkjet difference caused by manufacturing differences of the nozzles of the print head; preventing color differences from occurring when the print head is normally inkjetting; improving the printing quality of the device and facilitating product promotion. Description of the Drawings

[0047] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required to be used in the embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings, and all of these are within the protection scope of the present invention.

[0048] Figure 1 It is a schematic diagram of the nozzle layout of the nozzle in the background technology of the present invention;

[0049] Figure 2 It is another schematic diagram of the nozzle layout of the nozzle in the background technology of the present invention;

[0050] Figure 3 It is a flowchart of the inkjet printing color difference adjustment method in Embodiment 1 of the present invention;

[0051] Figure 4 It is a test schematic diagram of the print test of the inkjet printing color difference adjustment method in Embodiment 1 of the present invention;

[0052] Figure 5 It is a flowchart of the adjustment of the color density difference information of the inkjet printing color difference adjustment method in Embodiment 1 of the present invention;

[0053] Figure 6 It is a flowchart of the adjustment of the color density difference information of multiple inkjet dots printing of the inkjet printing color difference adjustment method in Embodiment 1 of the present invention;

[0054] Figure 6-1 It is a flowchart of the adjustment of the ink amount of multiple adjusted inkjet dots of the inkjet printing color difference adjustment method in Embodiment 1 of the present invention;

[0055] Figure 6-2 It is a flowchart of the adjustment of the number of inkjet dots of the inkjet printing color difference adjustment method in Embodiment 1 of the present invention;

[0056] Figure 7 It is a schematic diagram of different nozzle inkjet dot styles of the inkjet printing color difference adjustment method in Embodiment 1 of the present invention;

[0057] Figure 8 It is a flowchart of the inkjet printing color difference adjustment device in Embodiment 2 of the present invention;

[0058] Figure 9 It is a schematic diagram of the structure of the printing device in Embodiment 3 of the present invention.

[0059] Parts, components and numbers in the figure:

[0060] 1. Inkjet head; 2. Nozzle; 21. First ink dot; 22. Second ink dot; 23. Third ink dot; 3. Printing medium; 4. Test image. Detailed implementation manners

[0061] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. It should be noted that in this text, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. In the description of the present invention, it should be understood that the orientation or positional relationships indicated by terms such as "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. Moreover, the term "comprising", "including", or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article, or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such a process, method, article, or device. Without further limitation, the elements defined by the statement "including..." do not exclude the existence of additional identical elements in the process, method, article, or device including the said elements. If there is no conflict, the embodiments of the present invention and the various features in the embodiments can be combined with each other, and all are within the protection scope of the present invention.

[0062] As Figure 4 shown, on the premise that the ink dot concentrations of the initial print data in area a and area b are the same, that is, the resolution is the same, due to the differences in the manufacturing of the nozzles of the print head, color differences exist in the images of area a and area b. Area a represents a darker image color, and area b represents a lighter image color. Specifically, the ink amounts ejected between the nozzles are not equal, resulting in color differences.

[0063] For the convenience of understanding this article, the following explanations are made:

[0064] Single inkjet ink dot printing: The printed image is formed by an inkjet printing with the ink ejection and / or non-ink ejection of one type of inkjet ink dot. For example, a test image completely printed with the first ink dot;

[0065] Multiple inkjet ink dot printing: The printed image is formed by an inkjet printing with the ink ejection and / or non-ink ejection of multiple inkjet ink dots with different ink amounts in cooperation. For example, a test image printed with at least two of the first ink dot, the second ink dot, and the third ink dot.

[0066] Embodiment 1:

[0067] As Figure 3As shown in the figure, Embodiment 1 of the present invention discloses a method for adjusting the color difference in inkjet printing. The method includes:

[0068] S1: Control the print head to perform single-color printing to obtain a test image;

[0069] S2: Obtain the color density difference information of the test image;

[0070] S3: Process the original print data according to the color density difference information of the test image to obtain the target print data;

[0071] S4: Control the print head to print the image to be printed according to the target print data.

[0072] For the multi-pass printing mode, obtain the original print data corresponding to each scan of print head 1 in the print scanning direction, determine the inkjet dot conditions of print head 1 in the abnormal image area and the normal image area, obtain the color difference data of the inkjet dots in the normal image area and the abnormal image area according to the test image, and adjust (increase or decrease) the inkjet dots of the original print data to obtain the target print data.

[0073] For the One-pass printing mode, directly obtain the original print data corresponding to print head 1, obtain the color difference data of the inkjet dots in the abnormal image area and the normal image area according to the test image, and adjust (increase or decrease) the inkjet dots of the original print data to obtain the target print data.

[0074] Specifically, for example, printing is performed using the colors in CMYK4 respectively, where C represents cyan, M represents magenta, Y represents yellow, and K represents black; it can also be other single-color tests for printing. Each time, one color is used for printing, and the four different colors are printed in different areas of the same printing medium or on different printing media. The test images printed with each color have a color density difference in the image due to the physical error of print head 1 itself, such as Figure 4 As shown, according to the color density difference information, obtain the position and color difference situation of the color difference of each ink dot printed by each print head 1. It should be noted that the printing medium 3 is preferably a test printing medium because marks for easy statistics, such as scales and brightness, are provided on the test printing medium, and the test printing medium can be used multiple times.

[0075] As can be seen from the test image 4, there is a color difference between the test image printed by the nozzles in area a of print head 1 and the test image printed by the nozzles in area b of print head 1. The image in area a is significantly darker in color than the image in area b. Taking the image in area b as the normal concentration image area and the image in area a as the abnormal concentration image area; according to the color concentration difference between the images in area a and area b, adjust the ink dot concentration of the nozzles in area a, which can be repeated multiple times until a print test image without color difference is obtained; then take the difference between the ink output concentration of the nozzles in the corresponding area a of the print test image without color difference and the ink output concentration of the nozzles in area b as the image concentration difference (which can be used as the adjustment amount of the image concentration difference for this printing task or as a basic amount, and in each printing, add this basic amount to the printing task).

[0076] In one embodiment, a specific implementation of an inkjet printing color difference adjustment method is provided;

[0077] As Figure 5 shown, S3 includes:

[0078] S31: Obtain the abnormal image area corresponding to the color concentration difference information and the printing data corresponding to the abnormal image area;

[0079] S32: Adjust the ink volume and / or the number of inkjet dots of the printing data corresponding to the color concentration abnormal area.

[0080] In one embodiment, a specific implementation of an inkjet printing color difference adjustment method is provided;

[0081] Preferably, as Figure 6 shown, when printing with multiple types of the inkjet dots, in S32, it includes:

[0082] S3201: Obtain the number of types n of the inkjet dots and the number of each type of the inkjet dots;

[0083] S3202: Adjust the ink volume of the inkjet dots by adjusting the types of the inkjet dots according to the color concentration of the abnormal image area; and / or adjust the number of at least one type of inkjet dots according to the color concentration of the abnormal image area;

[0084] where n is a positive integer.

[0085] In one embodiment, a specific implementation of an inkjet printing color difference adjustment method is provided;

[0086] Preferably, as Figure 6-1 shown, in S32,

[0087] S3211: Obtain the color density corresponding to the normal image area of the test image as the threshold ink volume density;

[0088] S3212: Compare the color density of the abnormal image area with the threshold ink volume density;

[0089] S3213: If the color density of the abnormal image area is greater than the threshold ink volume density, reduce the ink volume of the inkjet dots in the abnormal image area;

[0090] S3214: If the color density of the abnormal image area is less than the threshold ink volume density, increase the ink volume of the inkjet dots in the abnormal image area.

[0091] Preferably, the inkjet dots used for printing the image to be printed include first ink dots, second ink dots, and third ink dots; the ink volume of the first ink dots is greater than the ink volume of the second ink dots, and the ink volume of the second ink dots is greater than the ink volume of the third ink dots;

[0092] In S3213, if the abnormal image area is printed by the first ink dots, adjust the inkjet dots to the second ink dots and / or the third ink dots; if the abnormal image area is printed by the second ink dots, adjust the inkjet dots to the third ink dots;

[0093] In S3214, if the abnormal image area is printed by the third ink dots, adjust the inkjet dots to the first ink dots and / or the second ink dots; if the abnormal image area is printed by the second ink dots, adjust the inkjet dots to the first ink dots.

[0094] Specifically, judge the concentration of the ink volume of the inkjet dots in the abnormal image area according to the printed test image. If the concentration is greater than the threshold, adjust the specification of the inkjet dots to the inkjet dots with a lower ink volume concentration, as Figure 7 shown, the nozzle 2 of the print head 1 is divided into nozzles for the first ink dots 21, the second ink dots 22, and the third ink dots 23; assume Figure 4 the test image 4 is printed by the first ink dots 21 of the nozzle 2, then the image data of area a can be adjusted to be printed by the second ink dots 22 of the nozzle 2, or by the third ink dots 23 with smaller inkjet dots, so as to eliminate the color difference.

[0095] In one embodiment, a specific implementation manner of an inkjet printing color difference adjustment method is provided;

[0096] Preferably, as Figure 6-2 shown, S32 includes:

[0097] S3221: Obtain the number of various types of inkjet dots in the color density abnormal area;

[0098] S3222: Obtain the quantity adjustment ratios of inkjet ink dots of various types;

[0099] S3223: Adjust the quantity of each type of inkjet ink dot respectively according to the quantity adjustment ratios of inkjet ink dots of various types.

[0100] Specifically, assume that the abnormal concentration image area of the test image 4 includes 1000 inkjet dots; if the print head for printing this test image is an n-bit type print head, taking a 2-bit print head as an example, these 1000 inkjet dots include 330 third ink dots 23, 330 second ink dots 22, and 340 first ink dots 21, and the three types of inkjet dots are evenly distributed. Similarly, if 100 ink ejection dots need to be reduced, the 1000 ink ejection dots are divided into 10 portions, and 10 dots are reduced from each portion. These 10 dots are evenly distributed among the three types of inkjet dots, that is, each third ink dot 23 is reduced by 3 ink ejection dots, the second ink dot 22 is reduced by 3 ink ejection dots, and the first ink dot 21 is reduced by 4 ink ejection dots; if 100 ink ejection dots need to be increased, the 1000 ink ejection dots are divided into 10 portions, and 10 dots are increased from each portion. These 10 dots are evenly distributed among the three types of inkjet dots, that is, each third ink dot 23 is increased by 3 ink ejection dots, the second ink dot 22 is increased by 3 ink ejection dots, and the first ink dot 21 is increased by 4 ink ejection dots.

[0101] Specifically, when reducing or increasing the ink ejection dots in the abnormal concentration image area, the ink ejection dots are increased or reduced in the form of a percentage of the total ink ejection dots; taking 1000 ink ejection dots as an example, each adjustment is made at 10% of the ink ejection dots (not limited to this ratio adjustment), and it can be based on the initial ink ejection dots or the adjusted ink ejection dots.

[0102] Case 1, when the quantity of the initial ink ejection dots is used as the adjustment base, the first adjustment quantity is to increase 100 ink ejection dots, and the total number of ink ejection dots becomes 1100; or reduce 100 ink ejection dots, and the total number of ink ejection dots becomes 900; the second adjustment quantity is still to increase 100 ink ejection dots, and the total number of ink ejection dots becomes 1200; or reduce 100 touch points, and the total number of ink ejection dots becomes 800, and so on until the requirements are met.

[0103] Case 2, when the quantity of the adjusted ink ejection dots is used as the adjustment base, the first adjustment quantity is to increase 100 ink ejection dots, and the total number of ink ejection dots becomes 1100; or reduce 100 ink ejection dots, and the total number of ink ejection dots becomes 900; the second adjustment quantity is still to increase 110 ink ejection dots, and the total number of ink ejection dots becomes 1210; or reduce 90 touch points, and the total number of ink ejection dots becomes 810, and so on until the requirements are met.

[0104] In an embodiment, a specific implementation manner of an inkjet printing color difference adjustment method is provided;

[0105] Preferably, when performing single inkjet droplet printing, in step S302, the number of inkjet droplets of the print data corresponding to the color density abnormal area is adjusted.

[0106] Specifically, assume that the abnormal density image area of the test image 4 includes 1000 inkjet dots; if the printhead for printing this test image is a 1-bit type printhead, then these 1000 inkjet dots correspond to 1000 ink ejection points; at this time, directly reduce the rated number of ink ejection points evenly from these 1000 ink ejection points. For example, if 100 ink ejection points need to be reduced, then divide the 1000 ink ejection points into 10 parts, and reduce 10 ink ejection points from each part; if 100 ink ejection points need to be increased, then divide the 1000 ink ejection points into 10 parts, and increase 10 ink ejection points in each part.

[0107] Using the inkjet printing color difference adjustment method of Embodiment 1, by performing monochromatic test printing on the printhead, according to the color density difference information of the test image, it can be obtained which areas of the inkjet dots in the printhead have inkjet density not meeting the requirements, and then the print data corresponding to the abnormal area image is adjusted. Specifically, the number and / or type of inkjet dots can be adjusted to complete the adjustment of the inkjet volume in the abnormal image area and ensure the effect of the printed image.

[0108] At the same time, by performing monochromatic test printing on the printhead, according to the color density difference information of the test image, it can be obtained which areas of the inkjet dots in the printhead have inkjet density not meeting the requirements, and then the print data corresponding to the abnormal area image is adjusted, eliminating the inkjet difference caused by manufacturing differences of the nozzles of the printhead; preventing color differences from occurring when the printhead is ejecting ink normally; improving the printing quality of the device, and can improve the printing efficiency and save resources.

[0109] Embodiment 2

[0110] The present invention also provides a printing device, as Figure 8 shown, including:

[0111] A test printing module: used to control the printhead to perform monochromatic printing to obtain a test image;

[0112] A test analysis module: used to obtain the color density difference information of the test image;

[0113] A data adjustment module: used to process the original print data according to the color density difference information of the test image to obtain target print data;

[0114] A target printing module: used to control the printhead to print the image to be printed according to the target print data.

[0115] Embodiment 3:

[0116] Embodiment 3 of the present invention discloses a printing device, such as Figure 9 shown, which includes at least one processor, at least one memory, and computer program instructions stored in the memory.

[0117] Specifically, the above-mentioned processor may include a central processing unit (CPU), or an application specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of the present invention.

[0118] The memory may include a mass storage for data or instructions. By way of example and not limitation, the memory may include a hard disk drive (HDD), a floppy disk drive, a flash memory, an optical disk, a magneto-optical disk, a magnetic tape, or a universal serial bus (USB) drive, or a combination of two or more of these. In a suitable case, the memory may include a removable or non-removable (or fixed) medium. In a suitable case, the memory may be internal or external to the data processing device. In a specific embodiment, the memory is a non-volatile solid state memory. In a specific embodiment, the memory includes a read-only memory (ROM). In a suitable case, the ROM may be a mask-programmed ROM, a programmable ROM (PROM), an erasable PROM (EPROM), an electrically erasable PROM (EEPROM), an electrically rewritable ROM (EAROM), or a flash memory, or a combination of two or more of these.

[0119] The processor reads and executes the computer program instructions stored in the memory to implement any one of the inkjet printing color difference adjustment methods in Embodiment 1 above.

[0120] In one example, the printing device may further include a communication interface and a bus. Among them, the processor, the memory, and the communication interface are connected through the bus and complete communication with each other.

[0121] The communication interface is mainly used to implement communication between the various modules, devices, units, and / or devices in the embodiments of the present invention.

[0122] The bus includes hardware, software, or both, and couples the components of the printing device together. By way of example and not limitation, the bus may include an Accelerated Graphics Port (AGP) or other graphics bus, an Enhanced Industry Standard Architecture (EISA) bus, a Front Side Bus (FSB), a HyperTransport (HT) interconnect, an Industry Standard Architecture (ISA) bus, an InfiniBand interconnect, a Low Pin Count (LPC) bus, a memory bus, a MicroChannel Architecture (MCA) bus, a Peripheral Component Interconnect (PCI) bus, a PCI-Express (PCI-X) bus, a Serial Advanced Technology Attachment (SATA) bus, a Video Electronics Standards Association Local (VLB) bus, or other suitable buses or a combination of two or more of these. Where appropriate, the bus may include one or more buses. Although embodiments of the present invention describe and illustrate specific buses, the present invention contemplates any suitable bus or interconnect.

[0123] Embodiment 4

[0124] In addition, in combination with the inkjet printing color difference adjustment method in Embodiment 1 above, an embodiment of the present invention can be implemented by providing a computer-readable storage medium. Computer program instructions are stored on the computer-readable storage medium; when the computer program instructions are executed by a processor, any one of the inkjet printing color difference adjustment methods in Embodiment 1 above is implemented.

[0125] In summary, the embodiments of the present invention provide an inkjet printing color difference adjustment method, device, equipment, and storage medium.

[0126] It should be clear that the present invention is not limited to the specific configurations and processes described above and illustrated in the figures. For the sake of brevity, detailed descriptions of known methods are omitted here. In the above embodiments, several specific steps are described and illustrated as examples. However, the method process of the present invention is not limited to the specific steps described and illustrated, and those skilled in the art can make various changes, modifications, and additions, or change the order between steps after understanding the spirit of the present invention.

[0127] The functional blocks shown in the above-described structural block diagrams can be implemented as hardware, software, firmware, or a combination thereof. When implemented in hardware, it can be, for example, an electronic circuit, an application specific integrated circuit (ASIC), appropriate firmware, a plug-in, a functional card, and so on. When implemented in software, the elements of the present invention are programs or code segments for performing the required tasks. The program or code segment can be stored in a machine-readable medium or transmitted via a data signal carried in a carrier wave on a transmission medium or a communication link. A "machine-readable medium" can include any medium capable of storing or transmitting information. Examples of machine-readable media include electronic circuits, semiconductor memory devices, ROM, flash memory, erasable ROM (EROM), floppy disks, CD-ROMs, optical disks, hard disks, optical fiber media, radio frequency (RF) links, and so on. The code segment can be downloaded via a computer network such as the Internet, an intranet, and so on.

[0128] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An inkjet printing color difference adjustment method based on ink dot adjustment, characterized in that, The method includes: Controlling the print head to perform monochromatic printing to obtain a test image; Obtaining color density difference information of the test image; Processing the original print data according to the color density difference information of the test image to obtain target print data, including: obtaining an abnormal image area corresponding to the color density difference information and print data corresponding to the abnormal image area; adjusting the number of inkjet dots of the print data corresponding to the abnormal image area; Controlling the print head to print the image to be printed according to the target print data; Wherein, when single-inkjet dot printing is performed, the adjusting the number of inkjet dots of the print data corresponding to the abnormal image area includes: Obtaining the number of inkjet dots included in the abnormal image area; Dividing the inkjet dots into several portions according to the number of inkjet dots included in the abnormal image area; Reducing or increasing the same number of dots from each portion to adjust the number of inkjet dots corresponding to the abnormal image area.

2. A printing device, characterized in that, Including: A test printing module: for controlling the print head to perform monochromatic printing to obtain a test image; A test analysis module: for obtaining color density difference information of the test image; A data adjustment module: for processing the original print data according to the color density difference information of the test image to obtain target print data, including: obtaining an abnormal image area corresponding to the color density difference information and print data corresponding to the abnormal image area; adjusting the number of inkjet dots of the print data corresponding to the abnormal image area; wherein, when single-inkjet dot printing is performed, the adjusting the number of inkjet dots of the print data corresponding to the abnormal image area includes: obtaining the number of inkjet dots included in the abnormal image area; dividing the inkjet dots into several portions according to the number of inkjet dots included in the abnormal image area; reducing or increasing the same number of dots from each portion to adjust the number of inkjet dots corresponding to the abnormal image area; A target printing module: for controlling the print head to print the image to be printed according to the target print data.

3. A printing device, characterized in that, Including: At least one processor, at least one memory, and computer program instructions stored in the memory, and when the computer program instructions are executed by the processor, the method described in claim 1 is implemented.

4. A storage medium having computer program instructions stored thereon, characterized in that, When the computer program instructions are executed by the processor, the method described in claim 1 is implemented.

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