CN115476587B - Inkjet printing method, device, equipment and storage medium based on eclosion template - Google Patents
Inkjet printing method, device, equipment and storage medium based on eclosion template Download PDFInfo
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- CN115476587B CN115476587B CN202211204170.2A CN202211204170A CN115476587B CN 115476587 B CN115476587 B CN 115476587B CN 202211204170 A CN202211204170 A CN 202211204170A CN 115476587 B CN115476587 B CN 115476587B
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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
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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
- B41J29/393—Devices for controlling or analysing the entire machine ; Controlling or analysing mechanical parameters involving printing of test patterns
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/12—Digital output to print unit, e.g. line printer, chain printer
- G06F3/1201—Dedicated interfaces to print systems
- G06F3/1202—Dedicated interfaces to print systems specifically adapted to achieve a particular effect
- G06F3/1203—Improving or facilitating administration, e.g. print management
- G06F3/1208—Improving or facilitating administration, e.g. print management resulting in improved quality of the output result, e.g. print layout, colours, workflows, print preview
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/12—Digital output to print unit, e.g. line printer, chain printer
- G06F3/1201—Dedicated interfaces to print systems
- G06F3/1223—Dedicated interfaces to print systems specifically adapted to use a particular technique
- G06F3/1237—Print job management
- G06F3/1253—Configuration of print job parameters, e.g. using UI at the client
- G06F3/1257—Configuration of print job parameters, e.g. using UI at the client by using pre-stored settings, e.g. job templates, presets, print styles
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- General Engineering & Computer Science (AREA)
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- Quality & Reliability (AREA)
- Ink Jet (AREA)
Abstract
The application discloses an inkjet printing method, device and equipment based on an eclosion template and a storage medium, and relates to the technical field of inkjet printing. The inkjet printing method includes: determining a processing area of original print data to be subjected to feathering; generating at least two different eclosion templates; generating target print data according to at least two different eclosion templates; and performing ink jet printing according to the target printing data. The printing apparatus includes: the system comprises a processing area determining module, an eclosion template generating module, a target printing data generating module and an inkjet printing module. The printing device includes a processor, a memory, and computer program instructions stored in the memory. The storage medium stores computer program instructions. The ink jet printing method, device, equipment and medium of the application can not cause printing texture when the coverage is overlapped by multiple times of printing, thereby seriously affecting the quality of the printed product.
Description
The application relates to an ink-jet printing method, a device, equipment and a storage medium, which are filed on 6/9 th year 2020, and are divisional patent application of application number 202010518547.6.
Technical Field
The application relates to the technical field of ink-jet printing, in particular to an ink-jet printing method, device, equipment and storage medium based on an eclosion template.
Background
Inkjet printing technology refers to technology in which ink droplets are ejected through a head onto a printing medium to obtain an image or text. The technology is non-contact printing, has the technical advantages of high printing speed, small pollution, bright image color, long image retention period, suitability for various printing media and the like, and is widely applied to the fields of advertisement manufacture, office cultural goods devices, printing, proofing and the like.
The inkjet printing technology is a technology of printing ink on a target carrier according to a certain rule through a nozzle, and because the height of the nozzle is certain, a wide-width printing product is realized through nozzle splicing or continuous multiple PASS printing. In order to improve the printing effect, the technique of feathering printing is often adopted to divide the data of the original hard spliced position such as the spliced position of the spray head and the spliced region of the PASS into two parts for fault-tolerant printing, so that one part of the pixel point data of the spliced region is printed for the first time, and the other part is printed for the second time.
However, due to the reasons of machine precision and motors, it is difficult to ensure that the accuracy of splicing and overlapping of the spray heads is completely consistent with each paper feeding and feeding step of the printer in operation, in addition, due to the reasons of frame stability, driving force of the spray heads and the like, the drop point positions of ink drops are not completely consistent with the theoretical positions, and when the overlapping is printed for multiple times, printing textures are easy to appear, so that the quality of a printed product is seriously affected.
Disclosure of Invention
The application provides an inkjet printing method, device, equipment and storage medium based on an eclosion template, which are used for solving the technical problem that the quality of a printed product is seriously affected by the fact that printing textures are easy to occur when a plurality of printing coverage are overlapped in the existing inkjet printing mode.
In a first aspect, the present application provides an inkjet printing method based on an feathering template, comprising the steps of:
s1: determining a processing area of original print data to be subjected to feathering processing according to a current printing mode and printing parameters;
s2: generating at least two different eclosion templates according to the size of the processing area of the original printing data, wherein the size of the processing area of the original printing data is the height of the processing area of the printing data, the eclosion templates comprise a first eclosion template unit and a second eclosion template unit, and generating the eclosion templates comprises: acquiring the eclosion height; dividing an original print data matrix into at least two original print data matrix units according to the eclosion height and the height of a processing area of the print data, wherein the two original print data matrix units comprise a first original print data matrix unit and a second original print data matrix unit; generating a first eclosion template unit and a second eclosion template unit according to the first original printing data matrix unit and the second original printing data matrix unit respectively;
s3: generating target print data according to at least two different eclosion templates and the original print data;
s4: and performing ink jet printing according to the target printing data.
Preferably, the feathering height is equal to half the height of the image per scan of the nozzle.
Preferably, when the feathering height is less than half of the image height per scan of the spray head, the method further comprises:
acquiring partial original print data between the first original print data matrix unit and the second original print data matrix unit, and recording the partial original print data as a third original print data matrix unit;
and acquiring a third eclosion template unit corresponding to the third original printing data matrix unit.
Preferably, when the feathering height is greater than half the height of the processing region of the print data, the method further comprises:
acquiring the overlapped part of the first eclosion template unit and the second eclosion template unit, and marking the overlapped part as an eclosion overlapped part;
and adding positions of emergence points to the eclosion matrix of the eclosion overlapped part.
Preferably: the halftone algorithms of the at least two different feathering templates are different and/or the transition rules are different and/or the feathering granularity and/or the starting position offset are different.
Preferably, the at least two different feathering templates include a first feathering template and a second feathering template, the density of the ink corresponding to the second feathering template gradually increases with a first density gradient along a first direction of the printed image, the density of the ink corresponding to the first feathering template gradually increases with a second density gradient along the first direction of the printed image, and the first density gradient and the second density gradient are different.
Preferably, the at least two different eclosion templates include a first eclosion template and a second eclosion template generated from the same base template, the first eclosion template having a start position that is a first position offset by a first distance in a width direction from the base template, and the second eclosion template having a second position offset by a second distance in the width direction from the base template.
In a second aspect, the present application provides an inkjet printing apparatus based on an feathering template, comprising:
the processing area determining module is used for determining a processing area of original print data to be subjected to feathering processing according to the current printing mode and the printing parameters;
the system comprises an eclosion template generation module, a first eclosion template generation module and a second eclosion template generation module, wherein the eclosion template generation module is used for generating at least two different eclosion templates according to the size of a processing area of original printing data, the size of the processing area of the original printing data is the height of the processing area of the printing data, the eclosion template comprises a first eclosion template unit and a second eclosion template unit, and the generating of the eclosion template comprises: acquiring the eclosion height; dividing an original print data matrix into at least two original print data matrix units according to the eclosion height and the height of a processing area of the print data, wherein the two original print data matrix units comprise a first original print data matrix unit and a second original print data matrix unit; generating a first eclosion template unit and a second eclosion template unit according to the first original printing data matrix unit and the second original printing data matrix unit respectively;
the target printing data generation module is used for generating target printing data according to at least two different eclosion templates and original printing data;
and the ink-jet printing module is used for carrying out ink-jet printing according to the target printing data.
In a third aspect, the present application provides an inkjet printing apparatus 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 the first aspect.
In a fourth aspect, the present application provides a storage medium having stored thereon computer program instructions which, when executed by a processor, implement the method of the first aspect:
the beneficial effects are that: in summary, the inkjet printing method, the device, the equipment and the storage medium provided by the application generate a plurality of different eclosion templates according to the printing mode and the printing parameters, and select the different eclosion templates to carry out eclosion processing on the printing data.
Drawings
In order to more clearly illustrate the technical solution of the embodiments of the present application, the drawings that are needed to be used in the embodiments of the present application 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 flowchart of an inkjet printing method according to embodiment 1 of the present application.
FIG. 2 is a flow chart of the present application for generating an eclosion template.
Fig. 3 is a schematic diagram of correspondence between the eclosion template and the original print data matrix of the present application.
Fig. 4 is a schematic view of two eclosion template units with overlapping portions.
FIG. 5 is a flow chart of generating different eclosion templates according to embodiment 2 of the present application.
FIG. 6 is a schematic diagram showing the process of 4pass printing according to example 2 of the present application.
FIG. 7 is a flow chart of generating different eclosion templates according to embodiment 3 of the present application.
Fig. 8 is a schematic view of the nozzle portion of the present application entering a print zone.
FIG. 9 is a schematic diagram of a process of 6pass printing according to example 3 of the present application.
Fig. 10 is a block diagram of the structure of an inkjet printing apparatus according to embodiment 5 of the present application.
Fig. 11 is a block diagram of the structure of a printing apparatus of embodiment 6 of the present application.
Detailed Description
Features and exemplary embodiments of various aspects of the present application will be described in detail below, and in order to make the objects, technical solutions and advantages of the present application more apparent, the present application 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 application and are not configured to limit the application. It will be apparent to one skilled in the art that the present application 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 application by showing examples of the application.
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.
Example 1
According to the ink-jet printing method, a plurality of different eclosion templates are generated according to the printing mode and the printing parameters, different eclosion templates are selected to carry out eclosion processing on printing data, and when the same area of a printing medium is subjected to ink-jet printing, the printing data processed by the different eclosion templates are used for printing, so that the problem that the quality of a printing product is affected due to the occurrence of printing textures in the printing process is effectively avoided.
Referring to fig. 1, the inkjet printing method provided in the present embodiment includes the following steps:
s1: determining a processing area of original print data to be subjected to feathering processing according to a current printing mode and printing parameters;
s2: generating at least two different eclosion templates according to the size of a processing area of the original printing data, a printing mode and/or printing channel information;
s3: generating target print data according to at least two different eclosion templates and the original print data;
s4: and performing ink jet printing according to the target printing data.
The printing modes comprise an Onepass printing mode and a multiple pass printing mode.
The multi-pass scanning printing refers to that each unit of an image to be printed can be printed only by performing multiple interpolation, each unit consists of a plurality of pixel points, if 2-pass scanning printing is performed, each unit consists of 2 pixel points, and if 3-pass scanning printing is performed, each unit consists of 3 pixel points; the disposable scanning printing is also called single pass scanning printing multi-pass printing, which has low efficiency and small yield, but low price, and is suitable for small-batch and intermittent production. 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. The Onepasts printing has the advantages of high efficiency and large yield, and is suitable for a mass and continuous production mode.
Wide width printed products are realized by spray head splicing or continuous multipass printing. The multiple pass printing mode is divided according to the number of times of scanning the same area nozzle, i.e. pass number, for example, the mode is a 2pass printing mode which needs to be scanned for 2 times to finish printing, the mode is a 4pass printing mode which needs to be scanned for 4 times to finish printing, and the like.
Wherein the printing parameters include the number of printing channels, channel length, head structure, image size, printing accuracy, etc.
When the printer software processes a print job, firstly, an image to be printed is converted into an image matrix, then the print image matrix is converted into a print data matrix corresponding to the image matrix, and the original print data in the text refers to the print data matrix obtained by conversion among the print image matrices. When in printing, the original printing data matrix corresponding to the image to be printed can be divided into a plurality of sub-original printing data matrixes with the same size according to the number of pass of printing, and the spray head prints one sub-original printing data matrix once every scanning; in this embodiment, determining the area of the print image matrix to be feathered according to the current print mode and the print parameters refers to determining the height of the print image matrix to be feathered in printing a sub-original print data matrix.
As shown in fig. 2, the eclosion template includes a first eclosion template unit and a second eclosion template unit, and the method for generating the eclosion template includes:
s210: acquiring the feathering height
S220: dividing the raw print data matrix 200 into at least two raw print data matrix units according to the feathering height and the height of the processing region of the print data, the two raw print data matrix units including a first raw print data matrix unit 210 and a second raw print data matrix unit 220;
s230: generating a first eclosion template unit 110 and a second eclosion template unit 140 according to the first original print data matrix unit 210 and the second original print data matrix unit 220 respectively;
when in printing, the original printing data matrix corresponding to the image to be printed can be divided into a plurality of sub-original printing data matrixes with the same size according to the number of pass of printing, and the sprayer prints one original printing data matrix once; the height of each original print data matrix is thus equal to the height of the head: the eclosion height refers to a height value of the sub-original print data matrix, which needs to be subjected to eclosion processing.
In this embodiment, the eclosion process is performed on the upper and lower parts of a sub-original print data matrix, and the original print data matrix is divided into at least two original print data matrix units accordingly, where the height of the first original print data matrix unit is the same as the eclosion height, and the height of the second original print data matrix unit is the same as the eclosion height.
As shown in fig. 3, when the feathering height is less than half of the height of the image per scan of the head, the heights of the first and second primitive print data matrix units 210 and 220 and the accuracy value of the head are less than that of the printer, there is a portion between the first and second primitive print data matrix units which does not need to be feathered. The partial original print data matrix may be regarded as a third original print data matrix unit, and corresponding to the third original print data matrix unit is a third eclosion template unit 130.
When the feathering height is equal to half of the height of the image per scan of the head, the sum of the heights of the first and second original print data matrix units is equal to half of the height of the image per scan of the head, and there is no portion between the first and second original print data matrix units that does not need to be feathered. At this time, the first eclosion template unit 110 and the second eclosion template unit 140 constitute one complete eclosion template 100.
As shown in fig. 4, when the eclosion height is greater than half of the height of the processing area of the print data, the first and second primitive print data matrix units are partially overlapped, and accordingly, the first and second eclosion template units 110 and 140, which are complementary eclosion template units, are partially overlapped, and the overlapping portions of the first and second eclosion template units are obtained by the phase of the portions corresponding to the first and second eclosion template units. To avoid the decrease in the ink amount of the feathering overlapped portion, the feathering matrix of the feathering overlapped portion may appropriately increase the position of the emergence point.
In this embodiment, after the print data is feathered by using different feathering templates, the print textures caused by feathering are not repeatedly superimposed due to multiple times of printing, and after the data processed by different feathering templates is printed for multiple times in the same print area, the textures generated by each time of printing can be mutually offset, so that the phenomenon that the print textures are generated by adopting the existing inkjet printing mode is successfully eliminated.
Example 2
The embodiment introduces a method for carrying out ink-jet printing by adopting different eclosion templates by different pass in multi-pass printing, which specifically comprises the following steps:
as shown in fig. 5, the inkjet printing is multipass printing, and the step S2: generating at least two different feathering templates based on the size of the processing area, print mode, and/or print channel information of the raw print data comprises:
s21: dividing the original printing data into n parts of sub original printing data according to the number n of the printing pass, wherein each 1pass corresponds to 1 part of sub original printing data;
s22: generating n different eclosion templates according to the number n of print pass and the size of the processing area of the original print data;
at the S3: generating target print data based on at least two different eclosion templates and raw print data
S31: n different eclosion templates are allocated to n parts of sub original printing data in a one-to-one correspondence manner;
s32: generating n parts of sub-target printing data according to n parts of sub-original printing data and n different eclosion templates corresponding to the n parts of sub-original printing data;
s33: and combining the n parts of target printing data to obtain target printing data.
Since in the multipass printing, a part of print data is printed by the printer performing the scan printing once, the present embodiment divides the original print data into several sub-original print data according to the number of passes in the print mode (the number of times each unit of the image to be printed in the multipass printing needs to be interpolated). Each pass of the printer prints one piece of sub-original print data, namely 1 piece of sub-original print data is corresponding to each 1 pass. Then generating n different eclosion templates corresponding to the pass number n, and distributing an eclosion template for each pass to ensure that the eclosion templates corresponding to each pass are different. And after different eclosion templates are distributed to each part of sub-original printing data, eclosion processing is carried out by utilizing eclosion template pairs corresponding to the sub-original printing data to obtain final printed target printing data.
The eclosion processing mode adopted by the printer for each scanning printing is different, and the situation that printing textures are formed by overlapping two or several times of printing can not occur.
The following description will take a 4pass print mode as an example:
in this embodiment, the nozzle row height of the nozzle used in the present embodiment is 360, that is, 360 nozzles are included, the nozzle arrangement precision is 360DPI, the grating reference precision is 360DPI, and the working state of the nozzle during printing is as shown
The eclosion template is generated according to the information of the spray head, the printing mode and the image to be printed, and the eclosion height is 100, namely the height corresponding to 100 nozzle arrays can be seen from the figure. Where the paper feed distance z=65. Since the 4pass printing mode is adopted, 4 different eclosion templates are correspondingly generated, and the 4 eclosion templates are an eclosion template 1, an eclosion template 2, an eclosion template 3 and an eclosion template 4 respectively.
As shown in fig. 8, when the head portion enters the printing area, the portion of the head that enters the printing area corresponds to a portion of the printing data, and the portion of the head that does not enter the printing area does not correspond to any data, the data of this portion is first filled with zero, and data corresponding to the head height is generated.
And distributing a serial number to each pass according to the print pass mode, and correspondingly distributing a serial number to the eclosion template corresponding to the pass. For example, in this embodiment, the 4pass mode is adopted, so that the serial numbers of the 4 passes are 1, 2, 3 and 4, and the serial numbers of the corresponding eclosion templates are 1, 2, 3 and 4.
The printing process is shown in FIG. 6
When the 1 st pass is printed, namely when the current pass number is 1, an eclosion template with the number 1 is selected to carry out eclosion treatment on the printed data, and an eclosion matrix and a print data matrix corresponding to the eclosion template with the number 1 are combined to obtain target print data of the 1 st pass;
when the 2 nd pass is printed, namely when the current pass serial number is 2, an eclosion template with the serial number of 2 is selected to carry out eclosion treatment on the printed data, and an eclosion matrix and a print data matrix corresponding to the eclosion template with the serial number of 2 are combined to obtain target print data of the 2 nd pass;
when the 3 rd pass is printed, namely when the current pass serial number is 3, an eclosion template with the serial number of 3 is selected to carry out eclosion treatment on the printed data, and an eclosion matrix and a print data matrix corresponding to the eclosion template with the serial number of 3 are combined to obtain target print data of the 3 rd pass;
when the 4 th pass is printed, namely when the current pass number is 4, an eclosion template with the number of 4 is selected to carry out eclosion treatment on the printed data, and an eclosion matrix and a print data matrix corresponding to the eclosion template with the number of 4 are combined to obtain target print data of the 4 th pass;
when the spray heads completely enter the printing area, the whole spray heads correspond to a part of printing data, and the printing process of the 4pass is repeated until the spray heads completely leave the printing area, and printing is completed.
Example 3
As shown in fig. 7, this embodiment describes a method for performing inkjet printing using different feathering templates in different color channels, specifically:
the S2 is used for generating at least two different eclosion templates according to the size of a processing area of the original printing data, the printing mode and/or the printing channel information;
s021: dividing the original printing data into m parts of sub-original printing data according to the number m of the printing channels divided by colors, wherein each color channel corresponds to one part of sub-original printing data;
s022: generating m different eclosion templates according to the number m of printing channels and the size of a processing area of original printing data;
at the S3: generating target print data based on at least two different eclosion templates and raw print data
S031: distributing m different eclosion templates to m parts of sub original printing data in a one-to-one correspondence manner;
s032: generating m parts of sub-target printing data according to m parts of sub-original printing data and m different eclosion templates corresponding to the m parts of sub-original printing data;
s033: and combining the m parts of sub-target printing data to obtain target printing data.
In inkjet printing, it is often necessary to use a plurality of different colors for printing, and the different colors also use different print channels accordingly, one print channel being assigned to each color. Accordingly, in this embodiment, the original print data is divided into a plurality of sub-original print data according to the number of print channels divided by colors, so that each sub-original print data corresponds to a print channel of one color, that is, a print channel of one color corresponds to a print of one sub-original print data.
And then generating m different eclosion templates for the number m of the printing channels, and distributing an eclosion template for each color printing channel to ensure that the eclosion templates corresponding to each color channel are different. And after different eclosion templates are distributed to the sub-original printing data printed by each color channel, eclosion processing is carried out by utilizing eclosion template pairs corresponding to the sub-original printing data to obtain final printed sub-target printing data.
In this way, the eclosion templates adopted by the printing data output by each color channel are different in the inkjet printing, so that the situation that printing textures are formed by overlapping certain two or certain times of printing does not occur.
The following description will take four color channels of C channel, M channel, Y channel and K channel as examples.
As shown in fig. 9, in this example, the nozzle row height of the nozzle used in the present example is 360, that is, the nozzle row includes 360 nozzles, the nozzle arrangement precision is 360DPI, the grating reference precision is 360DPI, and the working state of the nozzle during printing in the 6PASS printing mode is as follows:
the eclosion template is generated according to the information of the spray head, the printing mode and the image to be printed, and the eclosion height is 72, namely the height corresponding to 72 nozzle arrays can be seen from the figure 9. The paper feeding distance is 48. Since the printing is performed by using four color channels, 4 different eclosion templates are correspondingly generated, and the 4 eclosion templates are an eclosion template 1, an eclosion template 2, an eclosion template 3 and an eclosion template 4 respectively. And distributing the 4 eclosion templates to four color channels of a C channel, an M channel, a Y channel and a K channel, namely, the C channel corresponds to the eclosion template 1, the M channel corresponds to the eclosion template 2, the Y channel corresponds to the eclosion template 3 and the K channel corresponds to the eclosion template 4. And then, performing eclosion treatment on the printing data of the C channel by using an eclosion template 1 to obtain eclosion sub-target printing data, performing eclosion treatment on the printing data of the M channel by using an eclosion template 2 to obtain eclosion sub-target printing data, performing eclosion treatment on the printing data of the Y channel by using an eclosion template 3 to obtain eclosion sub-target printing data, and performing eclosion treatment on the printing data of the K channel by using an eclosion template 4 to obtain eclosion sub-target printing data.
The printing process is shown as
In the printing process, the spray head gradually enters a printing area, when the spray head part enters the printing area at the beginning, a part of printing data corresponding to the part of the spray head entering the printing area does not correspond to any data, the part of data not entering the printing area is filled with zero, and data corresponding to the height of the spray head is generated;
when the spray heads completely enter the printing area, the whole spray heads correspond to a part of printing data, and the printing process of the 6pass is repeated until the spray heads completely leave the printing area, and printing is completed.
Example 4
This embodiment describes a method of generating different eclosion templates.
In this embodiment, the halftone algorithms of the at least two different eclosion templates are different and/or the transition rules are different and/or the eclosion granularity and/or the starting position offset are different.
The halftone algorithm may employ the following:
dithering method: is a typical algorithm of the point processing method and is mainly divided into two main categories of random dithering and ordered dithering. Both algorithms require a template, also called dither matrix or threshold matrix, which determines not only the order in which dots become black when the brightness or gray value decreases, but also the quality of the halftone image, so the key to the dither algorithm is the construction of the dither matrix. The algorithm compares with a dither matrix, where the range of values for each threshold in the matrix is between the maximum and minimum gray values for the image.
Error diffusion method: in the ordered dithering process, a pixel point is compared with a dithering matrix to determine whether to place a micro-point at a location, which is essentially a point process. In 1976 Floyd and Steinberg proposed an error diffusion algorithm that transitioned halftoning from "point processing" to "neighborhood processing".
After different eclosion templates adopt different halftone algorithms, the distribution situation of ink points is obviously different when the coverage is printed each time, the phenomenon of printing overlapping is well eliminated, and the printing effect is greatly improved.
Iterative method: the best binary output is found by minimizing the error of the original image and the halftone image.
Wherein the transition rule may be a transition rule of a density of ink corresponding to the feathering template
For example, the at least two different feathering templates include a first feathering template having a concentration of ink that gradually increases along a first direction of the printed image and a second feathering template having a concentration of ink that gradually decreases along the first direction of the printed image.
For example, the concentration of the ink corresponding to the first feathering template gradually increases from top to bottom, and the concentration of the ink corresponding to the first feathering template gradually decreases from top to bottom. In this way, the texture printed by the first eclosion template and the texture printed by the second eclosion template can be mutually offset, so that the printing texture is eliminated.
For example, the density of the ink corresponding to the first feathering template is gradually increased along the first direction of the printed image and is gradually increased along the second direction of the printed image, and the density of the ink corresponding to the second feathering template is gradually decreased along the first direction of the printed image and is gradually decreased along the second direction of the printed image. Wherein the first direction and the second direction may be perpendicular to each other.
For example, the concentration of the first eclosion template decreases according to a first law, while the concentration of the second eclosion template decreases according to a second law.
For example, the concentration of the ink corresponding to the second feathering template gradually increases along the first direction of the printed image with a first concentration gradient, the concentration of the ink corresponding to the first feathering template gradually increases along the first direction of the printed image with a second concentration gradient, and the first concentration gradient and the second concentration gradient are different.
The template granularity refers to the pixel combination form of the smallest aggregation unit in the template, for example, the first eclosion template granularity may be 3×2, i.e. the combination form of 3 pixels in the width direction and 2 pixels in the height direction of the smallest aggregation unit in the template, and the second template granularity may be 4×3, i.e. the combination form of 4 pixels in the width direction and 3 pixels in the height direction of the smallest aggregation unit in the template
As an example, if the width of the template to be generated is 300 and the height is 300, the method for generating the first eclosion template is:
first, an initial template having a width of 300 ≡3=100 and a height of 300 ≡2=150 is generated;
then, scaling the width direction of the initial template to be three times of the original width direction, and expanding the height direction to be 2 times of the original height direction to obtain an expanded template as a first eclosion template;
the width of the template to be generated is 300, the height is 300, the granularity of the second eclosion template is 4 multiplied by 3, and the method for generating the second eclosion template is as follows:
first, an initial template having a width of 300++4=75 and a height of 300++3=100 is generated;
then, the width direction of the initial template is scaled four times as much as the original width direction, and the height direction is expanded three times as much as the original height direction, so that the expanded template is obtained as a second eclosion template.
Since the width of the image to be printed is very wide, if a template of a corresponding width is generated according to the width of the actual image, it may take up a relatively large amount of resources such as memory, and it is preferable to generate a template of a fixed width, and the actual image is recycled when it is wider than the template.
Based on the above usage, different starting position offsets may be set to obtain different templates. The first eclosion template and the second eclosion module may be generated from a fixed width base template pre-stored in memory. That is, the at least two different eclosion templates include a first eclosion template and a second eclosion template generated from the same base template, wherein a start position of the first eclosion template is a first position offset by a first distance in a width direction from the base template, and a start position of the second eclosion template is a second position offset by a second distance in the width direction from the base template. Wherein the width direction is the direction perpendicular to the height direction of the eclosion template.
Example 5
Referring to fig. 10, an embodiment of the present application provides an inkjet printing apparatus, which includes:
the processing area determining module is used for determining a processing area of original print data to be subjected to feathering according to a current printing mode and printing parameters;
the eclosion template generation module is used for generating at least two different eclosion templates according to the size of a processing area of the original printing data, a printing mode and/or printing channel information;
the target printing data generation module is used for generating target printing data according to at least two different eclosion templates and original printing data;
and the ink-jet printing module is used for carrying out ink-jet printing according to the target printing data.
Wherein the eclosion template generation module includes:
the printing data dividing sub-module is used for dividing the original printing data into n parts of sub-original printing data according to the number n of printing pass, and each pass corresponds to one part of sub-original printing data;
the eclosion template generation submodule is used for generating n different eclosion templates according to the number n of printing pass and the size of a processing area of original printing data;
the target print data generation module comprises
The eclosion template allocation submodule is used for allocating n different eclosion templates to n parts of sub original printing data in a one-to-one correspondence manner;
the sub-target printing data sub-module is used for generating n parts of sub-target printing data according to n parts of sub-original printing data and n different eclosion templates corresponding to the n parts of sub-original printing data;
and the target printing data combination submodule is used for combining the n parts of target printing data to obtain target printing data.
Example 6
In addition, the inkjet printing method according to the embodiment of the present application described in connection with fig. 11 may be implemented by using an inkjet printing apparatus. Fig. 11 shows a schematic diagram of a hardware configuration of an inkjet printing apparatus according to an embodiment of the present application.
The inkjet printing apparatus may include a processor 401 and a memory 402 in which computer program instructions are stored.
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 application.
Memory 402 may include mass storage for data or instructions. By way of example, and not limitation, memory 402 may comprise a Hard Disk Drive (HDD), floppy Disk Drive, flash memory, optical Disk, magneto-optical Disk, magnetic tape, or universal serial bus (Universal Serial Bus, USB) Drive, or a combination of two or more of the foregoing. Memory 402 may include removable or non-removable (or fixed) media, where appropriate. Memory 402 may be internal or external to the data processing apparatus, where appropriate. In a particular embodiment, the memory 402 is a non-volatile solid state memory. In a particular embodiment, the memory 402 includes Read Only Memory (ROM). The ROM may be mask programmed ROM, programmable ROM (PROM), erasable PROM (EPROM), electrically Erasable PROM (EEPROM), electrically rewritable ROM (EAROM), or flash memory, or a combination of two or more of these, where appropriate.
The processor 401 implements the data addressing method of random area printing in any of the above embodiments by reading and executing computer program instructions stored in the memory 402.
The inkjet printing apparatus in one example may also include a communication interface 403 and a bus 410. As shown in fig. 6, the processor 401, the memory 402, and the communication interface 403 are connected 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 application.
Bus 410 includes hardware, software, or both, coupling components for fractional ink volume output to each other. By way of example, and not limitation, the buses may include an Accelerated Graphics Port (AGP) or other graphics bus, an Enhanced Industry Standard Architecture (EISA) bus, a Front Side Bus (FSB), a HyperTransport (HT) interconnect, an Industry Standard Architecture (ISA) bus, an infiniband interconnect, a Low Pin Count (LPC) bus, a memory bus, a micro channel architecture (MCa) bus, a Peripheral Component Interconnect (PCI) bus, a PCI-Express (PCI-X) bus, a Serial Advanced Technology Attachment (SATA) bus, a video electronics standards association local (VLB) bus, or other suitable bus, or a combination of two or more of the above. Bus 410 may include one or more buses, where appropriate. Although embodiments of the application have been described and illustrated with respect to a particular bus, the application contemplates any suitable bus or interconnect.
Example 7
In addition, in combination with the inkjet printing method in the above embodiment, the embodiment of the present application 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 inkjet printing methods of the above embodiments.
The above is a detailed description of the inkjet printing method, apparatus, device and storage medium provided by the embodiment of the present application.
It should be understood that the application 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 application 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 application.
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 application 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 application 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 application 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 application 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 application, and they should be included in the scope of the present application.
Claims (10)
1. An inkjet printing method based on an feathering template is characterized by comprising the following steps:
s1: determining a processing area of original print data to be subjected to feathering processing according to a current printing mode and printing parameters;
s2: generating at least two different eclosion templates according to the size of the processing area of the original printing data, wherein the size of the processing area of the original printing data is the height of the processing area of the printing data, the eclosion templates comprise a first eclosion template unit and a second eclosion template unit, and generating the eclosion templates comprises: acquiring the eclosion height; dividing an original print data matrix into at least two original print data matrix units according to the eclosion height and the height of a processing area of the print data, wherein the two original print data matrix units comprise a first original print data matrix unit and a second original print data matrix unit; generating a first eclosion template unit and a second eclosion template unit according to the first original printing data matrix unit and the second original printing data matrix unit respectively;
s3: generating target print data according to at least two different eclosion templates and the original print data;
s4: and performing ink jet printing according to the target printing data.
2. The feathering template-based inkjet printing method according to claim 1, wherein the feathering height is equal to half of the height of an image per scan of a head.
3. The feathering template-based inkjet printing method according to claim 1, wherein when the feathering height is less than half of the image height per scan of the inkjet head, the method further comprises:
acquiring partial original print data between the first original print data matrix unit and the second original print data matrix unit, and recording the partial original print data as a third original print data matrix unit;
and acquiring a third eclosion template unit corresponding to the third original printing data matrix unit.
4. The feathering template-based inkjet printing method according to claim 1, wherein when the feathering height is greater than half the height of a processing region of print data, the method further comprises:
acquiring the overlapped part of the first eclosion template unit and the second eclosion template unit, and marking the overlapped part as an eclosion overlapped part;
and adding positions of emergence points to the eclosion matrix of the eclosion overlapped part.
5. The feathering template-based inkjet printing method according to any one of claims 1 to 4, wherein: the halftone algorithms of the at least two different feathering templates are different and/or the transition rules are different and/or the feathering granularity and/or the starting position offset are different.
6. The feathering template-based ink jet printing method according to claim 5, wherein the at least two different feathering templates comprise a first feathering template and a second feathering template, the concentration of the ink corresponding to the second feathering template gradually increases along a first direction of the printed image with a first concentration gradient, the concentration of the ink corresponding to the first feathering template gradually increases along a first direction of the printed image with a second concentration gradient, and the first concentration gradient and the second concentration gradient are different.
7. The feathering template-based ink jet printing method according to claim 5, wherein the at least two different feathering templates comprise a first feathering template and a second feathering template generated from the same base template, wherein a start position of the first feathering template is a first position shifted by a first distance in a width direction from the base template, and wherein the second feathering template is a second position shifted by a second distance in the width direction from the base template.
8. Inkjet printing device based on eclosion template, characterized by comprising:
the processing area determining module is used for determining a processing area of original print data to be subjected to feathering processing according to the current printing mode and the printing parameters;
the system comprises an eclosion template generation module, a first eclosion template generation module and a second eclosion template generation module, wherein the eclosion template generation module is used for generating at least two different eclosion templates according to the size of a processing area of original printing data, the size of the processing area of the original printing data is the height of the processing area of the printing data, the eclosion template comprises a first eclosion template unit and a second eclosion template unit, and the generating of the eclosion template comprises: acquiring the eclosion height; dividing an original print data matrix into at least two original print data matrix units according to the eclosion height and the height of a processing area of the print data, wherein the two original print data matrix units comprise a first original print data matrix unit and a second original print data matrix unit; generating a first eclosion template unit and a second eclosion template unit according to the first original printing data matrix unit and the second original printing data matrix unit respectively;
the target printing data generation module is used for generating target printing data according to at least two different eclosion templates and original printing data;
and the ink-jet printing module is used for carrying out ink-jet printing according to the target printing data.
9. Inkjet printing device, characterized in that it comprises at least one processor, at least one memory and computer program instructions stored in said memory, which when executed by said processor, implement the method according to any of claims 1-7.
10. A storage medium having stored thereon computer program instructions, which when executed by a processor, implement the method of any of claims 1-7.
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