CN115230333B - Print data processing method, device, equipment and medium for increasing eclosion area - Google Patents
Print data processing method, device, equipment and medium for increasing eclosion area Download PDFInfo
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- CN115230333B CN115230333B CN202210687991.XA CN202210687991A CN115230333B CN 115230333 B CN115230333 B CN 115230333B CN 202210687991 A CN202210687991 A CN 202210687991A CN 115230333 B CN115230333 B CN 115230333B
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- 230000032669 eclosion Effects 0.000 title claims abstract description 170
- 238000003672 processing method Methods 0.000 title claims abstract description 29
- 238000007639 printing Methods 0.000 claims abstract description 182
- 239000011159 matrix material Substances 0.000 claims abstract description 158
- 238000000034 method Methods 0.000 claims abstract description 34
- 238000007641 inkjet printing Methods 0.000 claims abstract description 21
- 230000000295 complement effect Effects 0.000 claims description 71
- 238000012545 processing Methods 0.000 claims description 37
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- 238000005516 engineering process Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/21—Ink jet for multi-colour printing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J29/00—Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
- B41J29/38—Drives, motors, controls or automatic cut-off devices for the entire printing mechanism
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
- B41J3/44—Typewriters or selective printing mechanisms having dual functions or combined with, or coupled to, apparatus performing other functions
- B41J3/445—Printers integrated in other types of apparatus, e.g. printers integrated in cameras
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
Abstract
The invention discloses a print data processing method, a device, equipment and a medium for increasing an eclosion area, wherein the method comprises the following steps: acquiring an eclosion area and a non-eclosion area in a first printing data matrix corresponding to each scanning of the nozzle along the main scanning direction; adding the eclosion area or reducing the print data in the non-eclosion area in the first print data matrix to obtain a second print data matrix corresponding to each scanning; and performing ink-jet printing according to the second printing data matrix corresponding to each scanning to obtain a second printing image. The invention can eliminate the problem of uneven printed images.
Description
The application is a divisional application of an invention patent application with application number 202010124279.X, which is filed on 2/27/2020 and is named as a data processing method, a device, equipment and a medium for eliminating image ink dot overlapping.
Technical Field
The present invention relates to the field of inkjet printing technologies, and in particular, to a method, an apparatus, a device, and a medium for processing print data for increasing an feathering area.
Background
The ink jet printing technology refers to a technology of ejecting ink drops onto a printing medium through nozzles on a nozzle to obtain images or characters, and mainly comprises reciprocating scanning printing, disposable scanning printing, multi-nozzle side-by-side scanning printing and the like, wherein the reciprocating scanning printing is also called multi-pass scanning printing, the multi-pass scanning printing refers to that each unit of an image to be printed can be printed only by performing interpolation for a plurality of times, each unit consists of a plurality of pixel points, if 2-pass scanning printing, each unit consists of 2 pixel points, and if 3-pass scanning printing, each unit consists of 3 pixel points; the one-time scanning printing is also called as single pass scanning printing, and the single pass scanning printing means that each unit of an image to be printed can be printed by only one scanning; the multi-nozzle side-by-side scanning printing is also called Onepass scanning printing, and the Onepass scanning printing refers to one-time printing completion of an image to be printed.
As shown in fig. 1, due to the reasons of printing precision and driving motor errors of the inkjet printing device, it is difficult to ensure that the distance between each relative movement of the nozzle and the printing medium is completely equal when the printer works, so that in the process of printing back and forth by the nozzle, the printed image part ink dots are overlapped due to the errors of the moving distance, and further, the phenomenon of exposing and whitening of the printed image is caused to be uneven, and the quality of the printed image is poor. Therefore, how to find a data processing method for eliminating the overlapping of the image ink dots has become a technical problem to be solved in the art.
Disclosure of Invention
The embodiment of the invention provides a print data processing method, a device, equipment and a medium for increasing an eclosion area, which are used for solving the problem of uneven printed images in the prior art.
In a first aspect, an embodiment of the present invention provides a print data processing method for increasing an eclosion area, the method including:
acquiring an eclosion area and a non-eclosion area in a first printing data matrix corresponding to each scanning of the nozzle along the main scanning direction;
adding the eclosion area or reducing the print data in the non-eclosion area in the first print data matrix to obtain a second print data matrix corresponding to each scanning;
and performing ink-jet printing according to the second printing data matrix corresponding to each scanning to obtain a second printing image.
Preferably, before the acquiring nozzle scans the feathered area and the non-feathered area in the corresponding first print data matrix along the main scanning direction, the method further includes:
and performing ink-jet printing according to the first printing data matrix corresponding to each scanning to obtain a first printing image.
Preferably, the eclosion area includes a first sub eclosion area and a second sub eclosion area, and adding the print data in the eclosion area in the first print data matrix to obtain a second print data matrix corresponding to each scan includes:
Increasing the number of ink outlet points in an eclosion template corresponding to the first sub eclosion area and the number of ink outlet points in a complementary template corresponding to the second sub eclosion area according to the first printed image;
processing original printing data corresponding to the first sub-eclosion area in an original printing data matrix corresponding to each scanning of the nozzle along the main scanning direction according to the eclosion template with the increased ink outlet number, and processing original printing data corresponding to the second sub-eclosion area in the original printing data matrix corresponding to each scanning of the nozzle along the main scanning direction according to the complementary template with the increased ink outlet number to obtain a second printing data matrix;
and the total ink outlet number of the eclosion template and the complementary template is larger than the total ink outlet number of the original printing data corresponding to the eclosion area.
Preferably, the eclosion templates include a cyan eclosion template, a magenta eclosion template, a yellow eclosion template, and a black eclosion template, and the complementary templates include a cyan complementary template, a magenta complementary template, a yellow complementary template, and a black complementary template.
Preferably, the cyan, magenta, yellow and black feathering templates are all the same, and the cyan, magenta, yellow and black complementary templates are all the same.
Preferably, at least two of the cyan, magenta, yellow and black feathering templates are different, and at least two of the cyan, magenta, yellow and black complementary templates are different.
Preferably, the adding the print data in the feathering area in the first print data matrix to obtain a second print data matrix corresponding to each scan includes:
determining a percentage of increase of each ink drop in the feathered area in the first print data matrix according to the first print image, wherein the ink drop comprises a large dot, a middle dot and a small dot;
and adjusting the printing data corresponding to the eclosion area in the first printing data matrix according to the increasing percentage of each ink drop in the eclosion area to obtain a second printing data matrix corresponding to each scanning.
Preferably, the reducing the print data in the non-eclosion area to obtain the second print data matrix corresponding to each scan includes:
obtaining a filtering template for filtering the non-eclosion area according to the first printing image;
And processing the printing data corresponding to the non-eclosion area in the first printing data matrix according to the filtering template to obtain a second printing data matrix.
In a second aspect, an embodiment of the present invention provides a print data processing apparatus that increases an feathering area, the apparatus including:
the region acquisition module is used for acquiring an eclosion region and a non-eclosion region in a first printing data matrix corresponding to each scanning of the nozzle along the main scanning direction;
a second print data matrix acquisition module, which is used for increasing the eclosion area or reducing the print data in the non-eclosion area in the first print data matrix to acquire a second print data matrix corresponding to each scanning;
and the second printing image acquisition module is used for carrying out ink-jet printing according to a second printing data matrix corresponding to each scanning to obtain a second printing image.
In a third aspect, an embodiment of the present invention provides a print data processing apparatus that increases an eclosion area, including: at least one processor, at least one memory and computer program instructions stored in the memory, which when executed by the processor, implement the method as in the first aspect of the embodiments described above.
In a fourth aspect, embodiments of the present invention provide a storage medium having stored thereon computer program instructions which, when executed by a processor, implement a method as in the first aspect of the embodiments described above.
In summary, according to the print data processing method, device, equipment and medium for increasing the eclosion area provided by the embodiments of the present invention, the method obtains the second print data matrix corresponding to each scan by increasing the eclosion area or decreasing the print data in the non-eclosion area, so that the final print density of the eclosion area and the non-eclosion area in the second print data matrix is the same, and the problem of uneven print image due to the different print density of the eclosion area and the non-eclosion area caused by mechanical error is eliminated.
Drawings
In order to more clearly illustrate the technical solution of the embodiments of the present invention, the drawings that are needed to be used in the embodiments of the present invention will be briefly described, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a prior art printed non-uniform image.
Fig. 2 is a flowchart of a data processing method of eliminating overlapping of image dots according to a first embodiment of the present invention.
FIG. 3 is a schematic diagram of a nozzle in a data processing method of the present invention for eliminating image ink dot overlap.
Fig. 4 is a schematic printing diagram in the data processing method of the present invention for eliminating the overlapping of image dots.
Fig. 5 is a schematic diagram showing the division of the feathering and non-feathering regions in the data processing method of eliminating the image dot overlap of the present invention.
Fig. 6 is a flowchart of a data processing method of eliminating overlapping of image dots according to a second embodiment of the present invention.
FIG. 7 is a schematic illustration of dot types in a data processing method of the present invention for eliminating image dot overlap.
Fig. 8 is a flowchart of a data processing method of eliminating overlapping of image dots according to a third embodiment of the present invention.
Fig. 9 is a flowchart of a data processing method of eliminating overlapping of image dots according to a fourth embodiment of the present invention.
Fig. 10 is a flowchart of a data processing method of eliminating overlapping of image dots according to a fifth embodiment of the present invention.
Fig. 11 is a schematic structural view of a data processing apparatus for eliminating overlapping of image dots according to a sixth embodiment of the present invention.
Fig. 12 is a schematic structural view of a data processing apparatus for eliminating overlapping of image dots according to a seventh embodiment of the present invention.
Detailed Description
Features and exemplary embodiments of various aspects of the present invention will be described in detail below, and in order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely configured to illustrate the invention and are not configured to limit the invention. It will be apparent to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the invention by showing examples of the invention.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises the element.
The image may be a representation of pixels, each pixel having color values such as RGB values representing red R, green G, blue B or CMYK values of cyan C, magenta M, yellow Y, black K, etc. of the printed primary colors, respectively; the image may be a representation of a matrix, the rows and columns of which may correspond to rows of pixels or groups of pixels in the length and width directions, respectively, and each value in the matrix may correspond to a pixel value, which may be a scalar or tuple represented in CMYK values. The image may be subdivided into a plurality of portions, each portion again being an image, in which case the resulting matrix may have fewer rows or fewer columns than the original image; the images may also be organized with each other such that the matrix associated with the resulting organized image may have fewer rows or fewer columns than the original image.
Referring to fig. 2, an embodiment of the present invention provides a data processing method for eliminating overlapping of image dots, where the method obtains a second print data matrix corresponding to each scan by adding the feathered area or reducing the print data in the non-feathered area, so that the final print density of the feathered area and the non-feathered area in the second print data matrix is the same, and the problem of non-uniformity of the printed image due to the difference of the print densities of the feathered area and the non-feathered area caused by mechanical error is eliminated. The method specifically comprises the following steps:
s1, acquiring an eclosion area and a non-eclosion area in a first printing data matrix corresponding to each scanning of a nozzle along a main scanning direction;
referring to fig. 3, in the present embodiment, the nozzle 100 has a plurality of nozzles 101, and the plurality of nozzles 101 are arranged along the sub-scanning direction L 2 Distributed at uniform intervals, the heads 100 are arranged in the main scanning direction L 1 And scanning back and forth to form an image, wherein the main scanning direction is perpendicular to the sub scanning direction. Each of the prints due to multiple pass scanThe units need to be interpolated for multiple times to complete printing, so that the nozzle 100 needs to be divided into multiple parts according to the pass number, for example, in 2pass printing in fig. 4, the nozzle 100 is divided into two parts 100a and 100b, each part has the same number of nozzles, and after printing is started, the nozzle 100 first scans along the main scanning direction L 1 The nozzle of the part 100a discharges ink while scanning, the nozzle of the part 100b does not discharge ink, and then the head 100 is in the sub-scanning direction L 2 Moving the height of the nozzle 100a part, in which case the nozzle 100b part is positioned at the start of the image area A printed by 100a for the first time, the head 100 is moved in the main scanning direction L for the second time 1 The nozzles of the two parts 100a and 100B are both inked during scanning, and the image area A is printed, and the two parts 100a and 100B are printed respectively, and the image area B is printed once, and the nozzle 100 continues in the sub-scanning direction L 2 Moving the height of the nozzle 100a at the beginning of the image area B, the nozzle 100B is positioned at the beginning of the image area B, the 3 rd time along the main scanning direction L 1 The nozzles of both parts 100a and 100B are inked during the scanning, and the image area B is printed, and the printing is continued until the whole image is printed, and it can be seen from the above printing process that each image area is printed twice, and the relative movement of the nozzle 100 and the printing medium is required in two processes. Because of the printing precision of the ink jet printing device and the error of the driving motor, it is difficult to ensure that the distance between the nozzle and the printing medium in each relative movement is completely equal when the printer works, so that in the process of printing back and forth by the nozzle, the movement distance has the error, so that part of ink points between the printed image areas are overlapped, and a pass channel as shown in fig. 1a appears. Referring to FIG. 5, in order to eliminate the problem of the pass, the first print data matrix corresponding to each scan of the head along the main scanning direction is divided into an eclosion area and a non-eclosion area, that is, the head is also divided into an eclosion area and a non-eclosion area, the eclosion area is located on the upper and lower sides of the head in the sub-scanning direction, and the data of the upper eclosion area is complementary with the data of the lower eclosion area, and the upper eclosion data and the lower eclosion data are combined to form complete print data, and the eclosion area data is printed in two times and is not eclosion And (3) printing the data of the chemical area normally so as to eliminate the pass channel at the joint of the image areas.
S2, adding the eclosion area or reducing the printing data in the non-eclosion area in the first printing data matrix to obtain a second printing data matrix corresponding to each scanning;
however, since the overlapping of some ink points also causes that some areas have no ink points, so that the exposure condition as shown in fig. 1b occurs, in order to eliminate the exposure condition of a printed image, the invention adopts to increase the feathering area or reduce the printing data in the non-feathering area in the first printing data matrix to obtain a second printing data matrix corresponding to each scanning, so that the final printing concentration of the feathering area and the non-feathering area in the second printing data matrix is the same, and the problem that the printing image is uneven due to the printing concentration of the feathering area and the non-feathering area which are caused by mechanical errors is different is eliminated.
In this embodiment, the eclosion regions on the upper and lower sides of the nozzle in the sub-scanning direction are respectively named as a first sub eclosion region and a second sub eclosion region, referring to fig. 6, the step S2 specifically includes:
s211, increasing the number of ink outlet points in an eclosion template corresponding to the first sub eclosion area and the number of ink outlet points in a complementary template corresponding to the second sub eclosion area according to the first printed image;
S212, processing original print data corresponding to the first sub-eclosion area in an original print data matrix corresponding to each scanning of the nozzle along the main scanning direction according to the eclosion template with the increased number of ink outlet points, and processing original print data corresponding to the second sub-eclosion area in the original print data matrix corresponding to each scanning of the nozzle along the main scanning direction according to the complementary template with the increased number of ink outlet points to obtain a second print data matrix;
the total ink outlet number of the eclosion template added with the ink outlet number and the complementary template added with the ink outlet number is larger than the total ink outlet number of the original printing data corresponding to the eclosion area.
Specifically, the heights of the printing data matrixes corresponding to the first sub-eclosion area and the second sub-eclosion area are determined according to the printing requirement, the heights of the printing data matrixes corresponding to the first sub-eclosion area and the second sub-eclosion area are equal, an eclosion template for processing the original printing data matrixes corresponding to the first sub-eclosion area is obtained, and then a complementary template for processing the original printing data matrixes corresponding to the second sub-eclosion area is obtained according to the eclosion template, wherein the complementary template is equal to a full matrix minus the eclosion template, and the eclosion template and the eclosion data matrix. Processing original printing data corresponding to the first sub-eclosion area in the original printing data matrix corresponding to each scanning of the nozzle along the main scanning direction according to the eclosion template, and processing original printing data corresponding to the second sub-eclosion area in the original printing data matrix corresponding to each scanning of the nozzle along the main scanning direction according to the complementary template to obtain a first printing data matrix; and performing ink-jet printing according to the first printing data matrix corresponding to each scanning to obtain a first printing image.
And scanning the first printed image to determine the printing effect after the eclosion processing, determining the increased number of ink outlet points in an eclosion template corresponding to the first sub-eclosion area and the increased number of ink outlet points in a complementary template corresponding to the second sub-eclosion area according to the printing effect of the first printed image, wherein the increased number of ink outlet points in the eclosion template and the complementary template can be found in a corresponding original printing data matrix, so that the total number of ink outlet points in the eclosion template with the increased number of ink outlet points is larger than the total number of ink outlet points in original printing data corresponding to the eclosion area, namely the number of printing points in each area is increased, so that partial blank area is filled, the condition that the printed image is exposed is eliminated, then the data matrix corresponding to the increased number of ink outlet points is processed by 'and the original printing data matrix corresponding to the first sub-eclosion area in the main scanning direction of the spray head' is processed by 'and the original printing data matrix corresponding to the second sub-scanning direction of the spray head' in the main scanning direction 'is processed by' the corresponding to the original printing data matrix corresponding to the second sub-scanning direction of the spray head 'in the main scanning direction' each time.
Preferably, in the present embodiment, the nozzles of the printing apparatus are composed of a cyan ink nozzle, a magenta ink nozzle, a yellow ink nozzle, and a black ink nozzle, each of which corresponds to one print data matrix, so that the original print data matrix includes: a cyan raw print data matrix, a magenta raw print data matrix, a yellow raw print data matrix, a black raw print data matrix, the first print data matrix comprising a first cyan print data matrix, a first magenta print data matrix, a first yellow print data matrix, a first black print data matrix, the second print data matrix comprising: the second cyan printing data matrix, the second magenta printing data matrix, the second yellow printing data matrix and the second black printing data matrix, wherein the eclosion templates comprise a cyan eclosion template, a magenta eclosion template, a yellow eclosion template and a black eclosion template, and the complementary templates comprise a cyan complementary template, a magenta complementary template, a yellow complementary template and a black complementary template. Meanwhile, the cyan eclosion template, the magenta eclosion template, the yellow eclosion template and the black eclosion template are all the same, and the cyan complementary template, the magenta complementary template, the yellow complementary template and the black complementary template are all the same. When relief printing is needed, the printing device nozzle further comprises a white ink nozzle, and the type of the ink nozzle owned by the printing device is not particularly limited.
In another variant embodiment, at least two of the cyan feathering template, the magenta feathering template, the yellow feathering template, and the black feathering template are different, and at least two of the cyan complementary template, the magenta complementary template, the yellow complementary template, and the black complementary template are different. Different eclosion templates and complementary templates are adopted for the print data matrixes with different colors, so that actual print data is more dispersed, and further, the image printing is more uniform.
Preferably, referring to fig. 7, in this embodiment, the printing device nozzle is a 2bit nozzle to print 3 kinds of dots, i.e. large dot, middle dot, and small dot, so that the print data of the feathered area can be increased by increasing the percentage of different dots, and referring to fig. 8 specifically, the method includes:
s221, determining the increasing percentage of each ink drop in the eclosion area in the first printing data matrix according to the first printing image, wherein the ink drop comprises a big point, a middle point and a small point;
s222, adjusting the printing data corresponding to the eclosion area in the first printing data matrix according to the increasing percentage of each ink drop in the eclosion area to obtain a second printing data matrix corresponding to each scanning.
Specifically, the first printed image is scanned to determine the printing effect after the feathering process, specifically, a first density value of the first printed image is obtained, the percentage of each ink drop in the feathering area in the first printed data matrix is determined according to the fluctuation condition, namely the variance, of the first density value of the first printed image, for example, when the variance of the first printed image is larger than a first threshold value and smaller than a second threshold value, only the small ink drops in the feathering area in the first printed data matrix are increased by 3%; increasing a midpoint within the feathered area in the first print data matrix by 10% or 3% and a midpoint ink drop by 7% when the variance of the first print image is greater than the second threshold and less than the third threshold; when the variance of the first printed image is greater than a third threshold, the large dots or small dots within the feathered regions in the first print data matrix are increased by 15% or 3%, the medium dots are increased by 7%, and the large dots are increased by 10%.
The step of reducing the print data in the non-feathered region, referring to fig. 9, includes:
S231, acquiring a filtering template for filtering the non-eclosion area according to the first printing image;
s232, processing the printing data corresponding to the non-eclosion area in the first printing data matrix according to the filtering template to obtain a second printing data matrix.
Specifically, the first printed image is scanned to determine the printing effect after the eclosion processing, a filtering template for filtering the non-eclosion area is determined according to the printing effect of the first printed image, the number of ink outlet points in the filtering template is smaller than that in the printing data corresponding to the non-eclosion area, the filtering template is adopted to perform phase AND operation on the printing data corresponding to the non-eclosion area in the first printing data matrix to obtain a second printing data matrix, and the number of ink outlet points in the printing data corresponding to the non-eclosion area is reduced through the filtering template, so that the printed image is uniform.
And S3, performing ink-jet printing according to a second printing data matrix corresponding to each scanning to obtain a second printing image.
Specifically, after the second print data matrix corresponding to each scan is obtained by adding the feathering area or reducing the print data in the non-feathering area in the first print data matrix, the print effect of the second print image obtained by performing inkjet printing according to the second print data matrix corresponding to each scan may be worse, which indicates that the print data in the feathering area cannot be added or reduced, but the print data in the feathering area needs to be reduced, and since the print data in the non-feathering area is already the data originally required to be printed, the print data in the feathering area cannot be increased any more, and therefore only the print data in the feathering area can be reduced. If the printing effect of the second printed image obtained by performing inkjet printing according to the second print data matrix corresponding to each scan is better, but the printed image is uneven, the method for increasing the feathering area or reducing the print data of the non-feathering area can be further processed sufficiently.
Referring to fig. 10, when the printing effect of the second print image obtained by performing inkjet printing according to the second print data matrix corresponding to each scan may be worse, the data processing method further includes:
s4, comparing the first density value of the first printed image with the second density value of the second printed image;
s5, if the second density value is larger than the fluctuation of the first density value, reducing the printing data in the eclosion area in the first printing data matrix to obtain a third printing data matrix corresponding to each scanning;
and S6, performing ink-jet printing according to the third printing data matrix to obtain a third printing image.
Specifically, the first print image and the second print image are scanned to obtain a plurality of first density values of the first print image and a plurality of second density values of the second print image, and variance of the plurality of first density values and variance of the plurality of second density values are calculated to determine fluctuation of the density values, wherein square differences of the plurality of first density values or other calculated values which can represent fluctuation can be calculated, and the calculation of fluctuation is not particularly limited herein. If the second density value is larger than the fluctuation of the first density value, reducing the number of ink outlet points in the eclosion template corresponding to the first sub eclosion area and the number of ink outlet points in the complementary template corresponding to the second sub eclosion area; processing original printing data corresponding to the first sub-eclosion area in an original printing data matrix corresponding to each scanning of the nozzle along the main scanning direction according to the eclosion template with the reduced number of ink outlet points, and processing original printing data corresponding to the second sub-eclosion area in the original printing data matrix corresponding to each scanning of the nozzle along the main scanning direction according to the complementary template with the reduced number of ink outlet points to obtain a second printing data matrix; the total ink outlet number of the eclosion template with the ink outlet number reduced and the complementary template with the ink outlet number reduced is larger than the total ink outlet number of the original printing data corresponding to the eclosion area. When the head of the printing apparatus is composed of a plurality of colors, the feathering templates of each color may be the same or different, and the complementary templates of each color may be the same or different.
Referring to fig. 11, an embodiment of the present invention provides a data processing apparatus for eliminating overlapping of image ink dots, the apparatus including:
a region acquisition module 10, configured to acquire an eclosion region and a non-eclosion region in a first print data matrix corresponding to each scan of the head along the main scanning direction;
a second print data matrix acquiring module 20, configured to increase the eclosion area or decrease print data in the non-eclosion area in the first print data matrix to acquire a second print data matrix corresponding to each scan;
the second print image acquisition module 30 is configured to perform inkjet printing according to a second print data matrix corresponding to each scan to obtain a second print image.
Preferably, the apparatus further comprises:
and the first printing image acquisition module is used for carrying out ink-jet printing according to the first printing data matrix corresponding to each scanning to obtain a first printing image.
Preferably, the apparatus further comprises:
a comparison module for comparing the first density value of the first printed image with the second density value of the second printed image;
a third print data matrix obtaining module, configured to reduce print data in the eclosion area in the first print data matrix to obtain a third print data matrix corresponding to each scan if the second density value is greater than the fluctuation of the first density value;
And the third printing image acquisition module is used for carrying out ink-jet printing according to the third printing data matrix to acquire a third printing image.
Preferably, the second print data matrix acquisition module 20 includes:
an ink-out number increasing unit, configured to increase, according to the first printed image, the number of ink-out numbers in an eclosion template corresponding to the first sub-eclosion area and the number of ink-out numbers in a complementary template corresponding to the second sub-eclosion area;
the second print data matrix obtaining unit is used for processing the original print data corresponding to the first sub-eclosion area in the original print data matrix corresponding to each scanning of the nozzle along the main scanning direction according to the eclosion template with the increased number of ink outlet points, and processing the original print data corresponding to the second sub-eclosion area in the original print data matrix corresponding to each scanning of the nozzle along the main scanning direction according to the complementary template with the increased number of ink outlet points, so as to obtain a second print data matrix;
and the total ink outlet number of the eclosion template and the complementary template is larger than the total ink outlet number of the original printing data corresponding to the eclosion area.
Preferably, the first print data matrix comprises: the system comprises a first cyan printing data matrix, a first magenta printing data matrix, a first yellow printing data matrix and a first black printing data matrix, wherein the eclosion templates comprise a cyan eclosion template, a magenta eclosion template, a yellow eclosion template and a black eclosion template, and the complementary templates comprise a cyan complementary template, a magenta complementary template, a yellow complementary template and a black complementary template.
Preferably, the cyan, magenta, yellow and black feathering templates are all the same, and the cyan, magenta, yellow and black complementary templates are all the same.
Preferably, at least two of the cyan, magenta, yellow and black feathering templates are different, and at least two of the cyan, magenta, yellow and black complementary templates are different.
Preferably, the second print data matrix acquisition module 20 further includes:
a percentage acquisition unit configured to determine, from the first print image, a percentage of increase of each ink droplet in the feathering area in the first print data matrix, the ink droplet including a large dot, a middle dot, and a small dot;
and the second printing data matrix acquisition unit is used for adjusting the printing data corresponding to the eclosion area in the first printing data matrix according to the increasing percentage of each ink drop in the eclosion area to acquire the second printing data matrix corresponding to each scanning.
Preferably, the second print data matrix acquisition module 20 further includes:
a filtering template obtaining unit for obtaining a filtering template for filtering the non-eclosion area according to the first printing image;
and the second printing data matrix acquisition unit is used for processing the printing data corresponding to the non-eclosion area in the first printing data matrix according to the filtering template to obtain a second printing data matrix.
In addition, the data processing method of eliminating image dot overlap of the embodiment of the present invention described in connection with fig. 2 may be implemented by a data processing apparatus that eliminates image dot overlap. Fig. 12 is a schematic diagram showing a hardware configuration of a data processing apparatus for eliminating overlapping of image dots according to an embodiment of the present invention.
The data processing device that eliminates image ink overlap may include a processor 401 and a memory 402 storing computer program instructions.
In particular, the processor 401 described above may include a Central Processing Unit (CPU), or an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), or may be configured as one or more integrated circuits implementing embodiments of the present invention.
The processor 401 reads and executes the computer program instructions stored in the memory 402 to implement any one of the data processing methods of eliminating the image ink dot overlapping in the above embodiments.
In one example, a data processing device that eliminates image ink dot overlap may also include a communication interface 403 and a bus 410. As shown in fig. 12, the processor 401, the memory 402, and the communication interface 403 are connected to each other by a bus 410 and perform communication with each other.
The communication interface 403 is mainly used to implement communication between each module, device, unit and/or apparatus in the embodiment of the present invention.
In addition, in combination with the data processing method for eliminating the overlapping of the image ink dots in the above embodiment, the embodiment of the present invention may be implemented by providing a computer readable storage medium. The computer readable storage medium has stored thereon computer program instructions; the computer program instructions, when executed by a processor, implement any of the data processing methods of the above embodiments to eliminate overlapping of image dots.
In summary, the data processing method, device, equipment and medium for eliminating image ink dot overlap provided by the embodiments of the present invention obtain the second print data matrix corresponding to each scan by increasing the feathering area or reducing the print data in the non-feathering area, so that the final print density of the feathering area and the non-feathering area in the second print data matrix is the same, and the problem of non-uniformity of the printed image due to the different print densities of the feathering area and the non-feathering area caused by mechanical errors is eliminated.
It should be understood that the invention is not limited to the particular arrangements and instrumentality described above and shown in the drawings. For the sake of brevity, a detailed description of known methods is omitted here. In the above embodiments, several specific steps are described and shown as examples. However, the method processes of the present invention are not limited to the specific steps described and shown, and those skilled in the art can make various changes, modifications and additions, or change the order between steps, after appreciating the spirit of the present invention.
The functional blocks shown in the above-described structural block diagrams may be implemented in hardware, software, firmware, or a combination thereof. When implemented in hardware, it may be, for example, an electronic circuit, an Application Specific Integrated Circuit (ASIC), suitable firmware, a plug-in, a function card, or the like. When implemented in software, the elements of the invention are the programs or code segments used to perform the required tasks. The program or code segments may be stored in a machine readable medium or transmitted over transmission media or communication links by a data signal carried in a carrier wave. A "machine-readable medium" may include any medium that can store or transfer information. Examples of machine-readable media include electronic circuitry, semiconductor memory devices, ROM, flash memory, erasable ROM (EROM), floppy disks, CD-ROMs, optical disks, hard disks, fiber optic media, radio Frequency (RF) links, and the like. The code segments may be downloaded via computer networks such as the internet, intranets, etc.
It should also be noted that the exemplary embodiments mentioned in this disclosure describe some methods or systems based on a series of steps or devices. However, the present invention is not limited to the order of the above-described steps, that is, the steps may be performed in the order mentioned in the embodiments, or may be performed in a different order from the order in the embodiments, or several steps may be performed simultaneously.
In the foregoing, only the specific embodiments of the present invention are described, and it will be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working processes of the systems, modules and units described above may refer to the corresponding processes in the foregoing method embodiments, which are not repeated herein. It should be understood that the scope of the present invention is not limited thereto, and any equivalent modifications or substitutions can be easily made by those skilled in the art within the technical scope of the present invention, and they should be included in the scope of the present invention.
Claims (8)
1. A print data processing method of increasing a feathering area, the method comprising:
the method comprises the steps that an eclosion area and a non-eclosion area in a first printing data matrix corresponding to each scanning of the acquisition nozzle along the main scanning direction are acquired, and before the eclosion area and the non-eclosion area in the first printing data matrix corresponding to each scanning of the acquisition nozzle along the main scanning direction are acquired, the method further comprises the steps of: performing ink-jet printing according to the first printing data matrix corresponding to each scanning to obtain a first printing image;
adding the eclosion area or reducing the print data in the non-eclosion area in the first print data matrix to obtain a second print data matrix corresponding to each scanning, wherein the eclosion area comprises a first sub eclosion area and a second sub eclosion area, and adding the print data in the eclosion area in the first print data matrix to obtain the second print data matrix corresponding to each scanning comprises: increasing the number of ink outlet points in an eclosion template corresponding to the first sub eclosion area and the number of ink outlet points in a complementary template corresponding to the second sub eclosion area according to the first printed image; processing original printing data corresponding to the first sub-eclosion area in an original printing data matrix corresponding to each scanning of the nozzle along the main scanning direction according to the eclosion template with the increased ink outlet number, and processing original printing data corresponding to the second sub-eclosion area in the original printing data matrix corresponding to each scanning of the nozzle along the main scanning direction according to the complementary template with the increased ink outlet number to obtain a second printing data matrix; the total ink outlet number of the eclosion template added with the ink outlet number and the complementary template added with the ink outlet number is larger than the total ink outlet number of the original printing data corresponding to the eclosion area;
And performing ink-jet printing according to the second printing data matrix corresponding to each scanning to obtain a second printing image.
2. The print data processing method of increasing an feathering area according to claim 1, wherein the feathering templates include a cyan feathering template, a magenta feathering template, a yellow feathering template, and a black feathering template, the complementary templates include a cyan complementary template, a magenta complementary template, a yellow complementary template, and a black complementary template, the cyan feathering template, the magenta feathering template, the yellow feathering template, and the black feathering template are all the same, and the cyan complementary template, the magenta complementary template, the yellow complementary template, and the black complementary template are all the same.
3. The print data processing method of increasing an eclosion area according to claim 1, wherein the eclosion templates include a cyan eclosion template, a magenta eclosion template, a yellow eclosion template, and a black eclosion template, the complementary templates include a cyan complementary template, a magenta complementary template, a yellow complementary template, and a black complementary template, at least two of the cyan eclosion template, the magenta eclosion template, the yellow eclosion template, and the black eclosion template are different, and at least two of the cyan complementary template, the magenta complementary template, the yellow complementary template, and the black complementary template are different.
4. The print data processing method of increasing a feathering area according to claim 1, wherein the adding print data in the feathering area in the first print data matrix to obtain a second print data matrix corresponding to each scan comprises:
determining a percentage of increase of each ink drop in the feathered area in the first print data matrix according to the first print image, wherein the ink drop comprises a large dot, a middle dot and a small dot;
and adjusting the printing data corresponding to the eclosion area in the first printing data matrix according to the increasing percentage of each ink drop in the eclosion area to obtain a second printing data matrix corresponding to each scanning.
5. The print data processing method of increasing a feathering area according to claim 1, wherein the reducing print data in the non-feathering area to obtain a second print data matrix corresponding to each scan comprises:
obtaining a filtering template for filtering the non-eclosion area according to the first printing image;
and processing the printing data corresponding to the non-eclosion area in the first printing data matrix according to the filtering template to obtain a second printing data matrix.
6. A print data processing apparatus that increases an eclosion area, the apparatus comprising:
the area acquisition module is used for acquiring an eclosion area and a non-eclosion area in a first printing data matrix corresponding to each scanning of the nozzle along the main scanning direction, and the area acquisition module further comprises the following components before the eclosion area and the non-eclosion area in the first printing data matrix corresponding to each scanning of the nozzle along the main scanning direction: performing ink-jet printing according to the first printing data matrix corresponding to each scanning to obtain a first printing image;
a second print data matrix acquisition module, configured to increase the eclosion area or decrease the print data in the non-eclosion area in the first print data matrix to obtain a second print data matrix corresponding to each scan, where the eclosion area includes a first sub-eclosion area and a second sub-eclosion area, and increasing the print data in the eclosion area in the first print data matrix to obtain the second print data matrix corresponding to each scan includes: increasing the number of ink outlet points in an eclosion template corresponding to the first sub eclosion area and the number of ink outlet points in a complementary template corresponding to the second sub eclosion area according to the first printed image; processing original printing data corresponding to the first sub-eclosion area in an original printing data matrix corresponding to each scanning of the nozzle along the main scanning direction according to the eclosion template with the increased ink outlet number, and processing original printing data corresponding to the second sub-eclosion area in the original printing data matrix corresponding to each scanning of the nozzle along the main scanning direction according to the complementary template with the increased ink outlet number to obtain a second printing data matrix; the total ink outlet number of the eclosion template added with the ink outlet number and the complementary template added with the ink outlet number is larger than the total ink outlet number of the original printing data corresponding to the eclosion area;
And the second printing image acquisition module is used for carrying out ink-jet printing according to a second printing data matrix corresponding to each scanning to obtain a second printing image.
7. A print data processing apparatus that increases a feathering area, comprising: at least one processor, at least one memory, and computer program instructions stored in the memory, which when executed by the processor, implement the method of any one of claims 1-5.
8. A medium having stored thereon computer program instructions, which when executed by a processor, implement the method of any of claims 1-5.
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