CN110865779A - Data extraction method, device and equipment for single-nozzle multi-color printing and storage medium - Google Patents
Data extraction method, device and equipment for single-nozzle multi-color printing and storage medium Download PDFInfo
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- 238000007639 printing Methods 0.000 title claims abstract description 268
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- 238000013075 data extraction Methods 0.000 title claims abstract description 41
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- 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
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- 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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- 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
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Abstract
The invention discloses a data extraction method, a device, equipment and a storage medium for single-nozzle multi-color printing, wherein the method obtains the nozzle row number N and the arrangement characteristics of N rows of nozzles of a single nozzle in the main scanning direction, N is more than or equal to 2, and N is an integer; acquiring the number M of color types printed by a single sprayer and the nozzle rows for printing each color according to the number N of the nozzle rows and the arrangement characteristics, wherein M is more than or equal to 2, N is more than or equal to M, and M is an integer; acquiring the resolution of a nozzle row for printing each color and the printing precision of an image to be printed; and extracting the printing data required by current printing from the data array for printing each color according to the resolution possessed by the nozzle array for printing each color and the printing precision. The invention realizes the printing of multiple colors by a single spray head, ensures the printing precision and saves the printing cost.
Description
Technical Field
The invention relates to the technical field of ink-jet printing, in particular to a data extraction method, a device, equipment and a storage medium for single-nozzle multi-color printing.
Background
The ink jet printing technology refers to a technology of ejecting ink droplets through nozzles on an ejection head onto a printing medium to obtain an image or characters. As shown in fig. 1, the conventional inkjet head is generally composed of a plurality of rows of nozzles in an interleaved manner due to machining accuracy and the like, and can improve the printing accuracy of the inkjet head in one-time scanning, as shown in fig. 1, the inkjet head is composed of 2 rows of nozzles, the resolution of one row of nozzles is 300DPI, and as the two rows of nozzles are arranged in an interleaved manner, the resolution of two rows of nozzles is 600DPI, that is, the printing accuracy of 600DPI can be realized, and the printing accuracy can be improved by adopting two rows of nozzles to print together; although the printing precision of once scanning has been improved to current ink gun, but an ink gun can only print an ink, if need realize the colour, need adopt C, M, Y, K altogether 4 kinds of inks to print usually, then must increase 3 shower nozzles of shower nozzle again and count, this will lead to the cost greatly increased that prints, if only adopt a shower nozzle can't satisfy the requirement that the colour printed again, consequently utilize single shower nozzle to realize polychrome and print a problem that needs to solve urgently in the present inkjet printing field.
Disclosure of Invention
The embodiment of the invention provides a data extraction method, a device, equipment and a storage medium for single-nozzle multi-color printing, which are used for solving the technical problem that the cost of single-color printing of a high-precision nozzle is too high in the prior art.
In a first aspect, an embodiment of the present invention provides a data extraction method for single-nozzle multi-color printing, where the method includes:
acquiring the nozzle row number N of a single nozzle in the main scanning direction and the arrangement characteristics of N rows of nozzles, wherein N is not less than 2 and is an integer;
acquiring the number M of color types printed by a single sprayer and the nozzle rows for printing each color according to the number N of the nozzle rows and the arrangement characteristics, wherein M is more than or equal to 2, N is more than or equal to M, and M is an integer;
acquiring the resolution of a nozzle row for printing each color and the printing precision of an image to be printed;
and extracting printing data required by current printing from the data array for printing each color according to the resolution of the nozzle array for printing each color and the printing precision.
Preferably, the extracting, from the data array for printing each color, print data required for current printing according to the resolution of the nozzle array for printing each color and the printing accuracy includes:
when the resolution of the nozzle array for printing each color is less than or equal to the printing precision, acquiring the total printing covering times of the unit area for printing each color according to the resolution of the nozzle array for printing each color and the printing precision;
and extracting printing data required by each printing from the data array for printing each color according to the total printing coverage times.
Preferably, the extracting, from the data array for printing each color, print data required for each printing according to the total number of print coverage includes:
acquiring the current printing covering times of a unit area for printing each color;
determining the number of the line numbers of the currently required printing data in the dot matrix data corresponding to the unit area according to the current printing covering times and the total printing covering times;
and extracting printing data from the dot matrix data corresponding to the unit area according to the line number.
Preferably, the line number L is calculated by the following formula:
wherein p represents the total number of print coverage, p is nd, d is the number of dots inserted by the head, x represents the current number of print coverage, Y represents the number of print coverageoffsetAnd the offset value of the nozzle array for printing the color is shown, n is a natural number, p is more than or equal to 1, x is more than or equal to 1, d is more than or equal to 1, and p, x and d are integers.
Preferably, the extracting, from the data array for printing each color, print data required for current printing according to the resolution of the nozzle array for printing each color and the printing accuracy includes:
when the resolution of the nozzle array for printing each color is larger than the printing precision, acquiring the number of the nozzle which is currently printed with ink according to the resolution of the nozzle array for printing each color and the printing precision;
and inputting the printing data required by current printing into the corresponding nozzle according to the nozzle number.
Preferably, when 2 ≦ N ≦ 4, then M ≦ N, and one column of nozzles prints one color.
Preferably, when N > 4, then M ═ 4, and the color types printed by the single nozzle include cyan, magenta, yellow and black.
In a second aspect, an embodiment of the present invention provides a data extraction device for single-nozzle multi-color printing, where the device includes:
the nozzle information acquisition module is used for acquiring the nozzle row number N of a single nozzle in the main scanning direction and the arrangement characteristics of N rows of nozzles, wherein N is not less than 2, and N is an integer;
the printing color obtaining module is used for obtaining the number M of color types printed by a single sprayer and the nozzle rows for printing each color according to the nozzle row number N and the arrangement characteristics, wherein M is more than or equal to 2, N is more than or equal to M, and M is an integer;
the printing precision acquisition module is used for acquiring the resolution of the nozzle array for printing each color and the printing precision of the image to be printed;
and the data extraction module is used for extracting the printing data required by current printing from the data array for printing each color according to the resolution of the nozzle array for printing each color and the printing precision.
In a third aspect, an embodiment of the present invention provides a data extraction device for single-nozzle multi-color printing, 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 of 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 the method of the first aspect in the above embodiments.
In summary, in the data extraction method, the apparatus, the device, and the storage medium for single-nozzle multi-color printing provided in the embodiments of the present invention, a single nozzle with at least 2 rows of nozzles is used to realize printing of at least two colors, specifically, the number of types of colors that can be printed is determined by the number of rows of nozzles in the single nozzle, and the row of nozzles for printing each color is determined, and then print data required for each printing is accurately extracted from the data array corresponding to each color according to the resolution of the row of nozzles for printing each color and the printing accuracy of an image to be printed, thereby realizing multi-color printing by a single nozzle, ensuring the printing accuracy, and saving the printing cost.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of the arrangement of nozzles in a prior art sprinkler head.
Fig. 2 is a schematic flow chart of a data extraction method for single-nozzle multi-color printing according to a first embodiment of the invention.
Fig. 3 is a schematic diagram showing the arrangement characteristics of nozzles in the data extraction method for single-nozzle multi-color printing according to the first embodiment of the present invention.
Fig. 4 is a flowchart illustrating a data extraction method for single-nozzle multi-color printing according to a second embodiment of the present invention.
Fig. 5 is a flowchart illustrating a data extraction method for single-nozzle multi-color printing according to a third embodiment of the present invention.
Fig. 6 is a data extraction diagram of a data extraction method for single-nozzle multi-color printing according to a third embodiment of the present invention.
Fig. 7 is a schematic flow chart of a data extraction method for single-nozzle multi-color printing according to a fourth embodiment of the invention.
Fig. 8 is a schematic structural diagram of a data extraction device for single-nozzle multi-color printing according to an embodiment of the present invention.
Fig. 9 is a schematic structural diagram of a data extraction device for single-nozzle multi-color printing according to an 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 objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting 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 present invention by illustrating examples of the present invention.
It is noted that, herein, relational terms such as first and second, and the like may be 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. Also, 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 identical elements in a process, method, article, or apparatus that comprises the element.
Referring to fig. 2, an embodiment of the present invention provides a data extraction method for single-nozzle multi-color printing, where the method includes the following steps:
s1, acquiring the nozzle row number N of a single spray head in the main scanning direction and the arrangement characteristics of N rows of nozzles, wherein N is more than or equal to 2 and is an integer;
specifically, the printing technology commonly used in the field of ink-jet printing is reciprocating scanning printing, and is mainly applied to flat-panel printers and photo printers, and the specific printing method comprises the following steps: the printing trolley provided with the spray head continuously scans along the direction of the cross beam, namely the main scanning direction, and controls the spray nozzle to spray ink on a printing medium to form an image in the scanning process, and the printing trolley moves for a certain distance in the sub-scanning direction perpendicular to the main scanning direction after scanning once along the main scanning direction, so that high-precision printing is realized.
Different spray head models have different resolutions and spray nozzle arrangement conditions, and different arrangement conditions have different plug points and offset values; as shown in FIG. 3(a), in this embodiment, there are 3 rows of nozzles J in the head1Row nozzles, J2Row nozzles, J3When the nozzles in the rows are arranged in a stepwise manner in the main scanning direction, the number of insertion points of the nozzles in fig. 3(a) is 3, J1The row of nozzles being at the very front in the head, hence J1The offset value of the row of nozzles relative to the front nozzle row in the head is Yoffset0＝0，J2Row nozzle relative to J1Offset value of row nozzle
J3Row nozzle relative to J1Offset value of row nozzle
Wherein q is the distance between two adjacent nozzles in a row of nozzles; referring to FIG. 3(b), in this embodiment, there are 4 rows of nozzles J in the head1Row nozzles, J2Row nozzles, J3Row nozzles, J4The row nozzles, 4 rows of nozzles are staggered in the main scanning direction, and it is apparent from fig. 3(b) that there is a step interpolation between only two rows of nozzles, so the number of interpolation points in this embodiment is 2, J1Row nozzles and J3The rows of nozzles being co-located at the very front of the head, so that J1Offset value of row nozzle is Yoffset0＝0，J3Offset value of row nozzle is Yoffset2＝0，J2Row nozzle relative to J1Offset value of row nozzle
J4Row nozzle relative to J1Offset value of row nozzle
From the figureIn which Y can be seenoffset1＝Yoffset3(ii) a As shown in fig. 3(c), in the present embodiment, there are 8 rows of nozzles in the head, the 8 rows of nozzles are staggered in the main scanning direction, and it is obvious from fig. 3(c) that there is a step interpolation between only two rows of nozzles, so the number of interpolation points in the present embodiment is 2.
S2, acquiring the number M of color types printed by a single nozzle and the nozzle row for printing each color according to the nozzle row number N and the arrangement characteristics, wherein M is more than or equal to 2, N is more than or equal to M, and M is an integer;
specifically, when N is not less than 2 and not more than 4, M is not less than N, and one row of nozzles prints one color, then nozzles need to be added to realize color printing, so as to ensure that the nozzles print in four primary colors; when N is more than 4, M is 4, the color types printed by a single nozzle comprise cyan, magenta, yellow and black, as shown in FIG. 3(c), 8 rows of nozzles are arranged in the nozzle, each two rows of nozzles print one color, the specific 1 st row and 2 nd row print cyan, the specific 3 rd row and 4 th row print magenta, the specific 5 th row and 6 th row print yellow, and the specific 7 th row and 8 th row print black; when special color ink exists and needs to be printed, such as gloss oil, and when N is greater than 4, M is equal to 5, and the colors printed by the single nozzle are cyan, magenta, yellow, black and gloss oil.
S3, acquiring the resolution of the nozzle array for printing each color and the printing precision of the image to be printed;
and S4, extracting the printing data required by current printing from the data array for printing each color according to the resolution of the nozzle array for printing each color and the printing precision.
Specifically, referring to fig. 4, when the resolution of the nozzle row for printing each color is less than or equal to the printing precision, the step S4 specifically includes:
s411, acquiring the total printing covering times of a unit area for printing each color according to the resolution of the nozzle array for printing each color and the printing precision;
and S412, extracting printing data required by each printing from the data array for printing each color according to the total printing coverage times.
Specifically, assuming that the resolution of the nozzle row for printing each color is J and the printing precision is D, the total printing coverage number p is:
referring to fig. 5, the step S412 specifically includes:
s4121, acquiring the current printing covering times of the unit area for printing each color;
s4122, determining the number of the line numbers of the currently required printing data in the dot matrix data corresponding to the unit area according to the current printing coverage times and the total printing coverage times;
s4123, extracting printing data from the dot matrix data corresponding to the unit area according to the line number.
Preferably, the line number L is calculated by the following formula:
wherein p represents the total number of print coverage, p is nd, d is the number of dots inserted by the head, x represents the current number of print coverage, Y represents the number of print coverageoffsetAnd the offset value of the nozzle row for printing the color is shown, n is a natural number, p is more than or equal to 1, x is more than or equal to 1, d is more than or equal to 1, and p, x and d are integers.
Specifically, referring to fig. 6, in the embodiment, the nozzle head has 4 rows of nozzles in the main scanning direction, which are respectively the first nozzle row J1And a second nozzle row J2And a third nozzle row J3And a fourth nozzle row J4The 4 rows of nozzles are staggered in the main scanning direction, the number of the insertion points d of the nozzle is 2, each row of nozzles prints one color, and the specific first nozzle row J1Printing cyan C, second nozzle array J2Red M, third nozzle row J of print3Printing yellow Y, fourth nozzle column J4Printing black K, as can also be seen in the figure, the first nozzle row J1And a third nozzle row J3At the forefront of the head, the first nozzle row J1And a third nozzle row J3The offset values of the nozzle rows for printing the color are Yoffset0＝0、Y offset20, second nozzle row J2Relative to the first nozzle row J1Is Yoffset10.5q, second nozzle row J4Relative to the first nozzle row J1Is Yoffset1Q is the distance between two adjacent nozzles in a row of nozzles, 0.5 q. The printing precision of an image to be printed is 600DPI, the resolution of each row of nozzles is 300DPI, the printing precision of the image to be printed can be realized only by printing twice in the main scanning direction, namely the total printing coverage number of a unit area of the image to be printed is 2 times, the requirement that p is nd is met, for example, the image line number needing to be printed in the unit areas of cyan C, magenta M, yellow Y and black K is shown in FIG. 6, and the data of 0, 2, 4 … … 598 and 600 lines are extracted from the data unit of the cyan C to the first nozzle row J in the first scanning1Extracting data of 1, 3, 5 … … 597, 599 rows from the data unit of magenta M to the second nozzle row J2Extracting data of 0, 2, 4 … … 598, 600 rows from the data cell of yellow Y to the third nozzle column J3Extracting data of 1, 3, 5 … … 597, 599 rows from the data unit of black K to the fourth nozzle column J4(ii) a In the second scan, data of 1, 3, 5 … … 597, 599 rows are extracted from the data cell of cyan C to the first nozzle row J1Data of 0, 2, 4 … … 598, 600 rows are extracted from the data cell of magenta M to the second nozzle column J2Extracting data of 1, 3, 5 … … 597, 599 rows from the data cell of yellow Y to the third nozzle column J3Extracting data of 0, 2, 4 … … 598, 600 rows from the data unit of black K to the fourth nozzle column J4Then, printing of one unit area is completed, 600DPI printing is realized by adopting two times of interpolation printing, then all the unit areas are repeatedly printed until the printing of the image to be printed is completed, and then 600DPI printing is completed by adopting a single spray head with the resolution of 300 DPI.
Preferably, referring to fig. 7, in another embodiment, when the resolution of the nozzle row for printing each color is less than or equal to the printing precision, the step S4 specifically includes:
421. acquiring the number of the nozzle which is currently printed with ink according to the resolution ratio of the nozzle row which prints each color and the printing precision;
422. and inputting the printing data required by current printing into the corresponding nozzle according to the nozzle number.
Assuming that the nozzle row for printing each color has a resolution J and a printing precision D, the nozzle number S is obtained by the following formula:
specifically, if the printing precision of an image to be printed is 300DPI, and the resolution of each row of nozzles is 600DPI, printing can be completed by one scanning, but if all the nozzles are inked, the printing precision is too high, and the product appearance is affected. With continued reference to FIG. 6, data extracted from the data cell of cyan C during printing is sequentially sent to the first nozzle row J1Of the 0 th, 2 th, 4 … … 598 th, 600 th nozzles, the data extracted from the data cell of magenta M is sequentially sent to the second nozzle row J2Of the 0 th, 2 th, 4 … … 598 th, 600 th nozzles, data extracted from the data cell of yellow Y is sequentially sent to the third nozzle row J3Of the 0 th, 2 th, 4 … … 598 th, 600 th nozzles, the data extracted from the data cell of black K is sequentially sent to the fourth nozzle row J 40, 2, 4 … … 598, 600, and now low precision printing.
Referring to fig. 8, an embodiment of the present invention provides a data extraction apparatus for single-nozzle multi-color printing, where the apparatus includes:
the nozzle information acquisition module 10 is used for acquiring the nozzle row number N of a single nozzle in the main scanning direction and the arrangement characteristics of N rows of nozzles, wherein N is not less than 2, and N is an integer;
the printing color obtaining module 20 is configured to obtain the number M of color types printed by a single nozzle and the nozzle rows for printing each color according to the number N of the nozzle rows and the arrangement characteristics, where M is greater than or equal to 2, N is greater than or equal to M, and M is an integer;
a printing precision obtaining module 30, configured to obtain a resolution of a nozzle row for printing each color and a printing precision of an image to be printed;
and the data extraction module 40 is used for extracting the printing data required by current printing from the data array for printing each color according to the resolution of the nozzle array for printing each color and the printing precision.
Preferably, the data extraction module 40 includes:
a total printing coverage number acquisition unit configured to acquire, when a resolution of a nozzle array for printing each color is equal to or less than the printing accuracy, a total printing coverage number of printing a unit area for each color in accordance with the resolution of the nozzle array for printing each color and the printing accuracy;
and the first data extraction unit is used for extracting printing data required by each printing from the data array for printing each color according to the total printing coverage times.
Preferably, the first data extraction unit is further configured to acquire a current print coverage number of printing the unit area of each color; determining the number of the line numbers of the currently required printing data in the dot matrix data corresponding to the unit area according to the current printing covering times and the total printing covering times; and extracting printing data from the dot matrix data corresponding to the unit area according to the line number.
Preferably, the line number L is calculated by the following formula:
preferably, the row number Y is calculated by the following formula:
wherein p represents the total number of print coverage, p is nd, d is the number of dots inserted by the head, x represents the current number of print coverage, Y represents the number of print coverageoffsetAnd the offset value of the nozzle array for printing the color is shown, n is a natural number, p is more than or equal to 1, x is more than or equal to 1, d is more than or equal to 1, and p, x and d are integers.
Preferably, the data extraction module 40 further includes:
a nozzle number acquiring unit configured to acquire a nozzle number of currently printed ink according to a resolution of a nozzle array for printing each color and a printing precision when the resolution of the nozzle array for printing each color is greater than the printing precision;
and the second data extraction unit is used for inputting the printing data required by current printing into the corresponding nozzle according to the nozzle number.
Preferably, when 2 ≦ N ≦ 4, then M ≦ N, and one column of nozzles prints one color.
Preferably, when N > 4, then M ═ 4, and the color types printed by the single nozzle include cyan, magenta, yellow and black.
In addition, the data extraction method for single-nozzle multi-color printing according to the embodiment of the present invention described in conjunction with fig. 2 may be implemented by a data extraction apparatus for single-nozzle multi-color printing. Fig. 9 is a schematic diagram illustrating a hardware configuration of a data extraction device for single-nozzle multi-color printing according to an embodiment of the present invention.
A data extraction device for single-jet multi-color printing may include a processor 401 and a memory 402 having stored thereon computer program instructions.
Specifically, the processor 401 may include a Central Processing Unit (CPU), or an 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 realize the data extraction method for single-nozzle multi-color printing in any one of the above embodiments.
In one example, the data extraction device for single-nozzle multi-color printing may also include a communication interface 403 and a bus 410. As shown in fig. 9, the processor 401, the memory 402, and the communication interface 403 are connected via a bus 410 to complete communication therebetween.
The communication interface 403 is mainly used for implementing communication between modules, apparatuses, units and/or devices in the embodiments of the present invention.
In addition, in combination with the data extraction method for single-nozzle multi-color printing 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 having stored thereon computer program instructions; the computer program instructions, when executed by a processor, implement any one of the above-described embodiments of the data extraction method for single-nozzle multi-color printing.
In summary, in the data extraction method, the apparatus, the device, and the storage medium for single-nozzle multi-color printing provided in the embodiments of the present invention, a single nozzle with at least 2 rows of nozzles is used to realize printing of at least two colors, specifically, the number of types of colors that can be printed is determined by the number of rows of nozzles in the single nozzle, and the row of nozzles for printing each color is determined, and then print data required for each printing is accurately extracted from the data array corresponding to each color according to the resolution of the row of nozzles for printing each color and the printing accuracy of an image to be printed, so that printing of multiple colors by a single nozzle is realized, the printing accuracy is ensured, and the printing cost is saved.
It is to be understood that the invention is not limited to the specific arrangements and instrumentality described above and shown in the drawings. A detailed description of known methods is omitted herein for the sake of brevity. 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 illustrated, and those skilled in the art can make various changes, modifications and additions or change the order between the steps after comprehending the spirit of the present invention.
The functional blocks shown in the above-described structural block diagrams may be implemented as 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, plug-in, 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 by a data signal carried in a carrier wave over a transmission medium or a communication link. A "machine-readable medium" may include any medium that can store or transfer information. Examples of a machine-readable medium include electronic circuits, 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 so forth. The code segments may be downloaded via computer networks such as the internet, intranet, etc.
It should also be noted that the exemplary embodiments mentioned in this patent 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, may be performed in an order different from the order in the embodiments, or may be performed simultaneously.
As described above, only the specific embodiments of the present invention are provided, and it can be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working processes of the system, the module and the unit described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again. It should be understood that the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive various equivalent modifications or substitutions within the technical scope of the present invention, and these modifications or substitutions should be covered within the scope of the present invention.
Claims (10)
1. A data extraction method for single-nozzle multi-color printing is characterized by comprising the following steps:
acquiring the nozzle row number N of a single nozzle in the main scanning direction and the arrangement characteristics of N rows of nozzles, wherein N is not less than 2 and is an integer;
acquiring the number M of color types printed by a single sprayer and the nozzle rows for printing each color according to the number N of the nozzle rows and the arrangement characteristics, wherein M is more than or equal to 2, N is more than or equal to M, and M is an integer;
acquiring the resolution of a nozzle row for printing each color and the printing precision of an image to be printed;
and extracting printing data required by current printing from the data array for printing each color according to the resolution of the nozzle array for printing each color and the printing precision.
2. The method for extracting data of single-nozzle multi-color printing according to claim 1, wherein the extracting of print data required for current printing from a data array for printing each color according to the resolution of nozzle columns for printing each color and the printing precision comprises:
when the resolution of the nozzle array for printing each color is less than or equal to the printing precision, acquiring the total printing covering times of the unit area for printing each color according to the resolution of the nozzle array for printing each color and the printing precision;
and extracting printing data required by each printing from the data array for printing each color according to the total printing coverage times.
3. The method for extracting data of single-nozzle multi-color printing according to claim 2, wherein the extracting print data required for each printing from the data array for printing each color according to the total printing coverage number comprises:
acquiring the current printing covering times of a unit area for printing each color;
determining the number of the line numbers of the currently required printing data in the dot matrix data corresponding to the unit area according to the current printing covering times and the total printing covering times;
and extracting printing data from the dot matrix data corresponding to the unit area according to the line number.
4. The method for extracting data of single-nozzle multi-color printing according to claim 3, wherein the line number L is calculated by the following formula:
wherein p represents the total number of print coverage, p is nd, d is the number of dots inserted by the head, x represents the current number of print coverage, Y represents the number of print coverageoffsetAnd the offset value of the nozzle array for printing the color is shown, n is a natural number, p is more than or equal to 1, x is more than or equal to 1, d is more than or equal to 1, and p, x and d are integers.
5. The method for extracting data of single-nozzle multi-color printing according to claim 1, wherein the extracting of print data required for current printing from a data array for printing each color according to the resolution of nozzle columns for printing each color and the printing precision comprises:
when the resolution of the nozzle array for printing each color is larger than the printing precision, acquiring the number of the nozzle which is currently printed with ink according to the resolution of the nozzle array for printing each color and the printing precision;
and inputting the printing data required by current printing into the corresponding nozzle according to the nozzle number.
6. The method for extracting data of single-nozzle multi-color printing according to any one of claims 1 to 5, wherein when 2 ≦ N ≦ 4, M ≦ N, and one column of nozzles prints one color.
7. The method for extracting data of single-nozzle multi-color printing according to any one of claims 1 to 5, wherein when N > 4, M is 4, and the color types printed by the single nozzle comprise cyan, magenta, yellow and black.
8. A data extraction device for single-nozzle multi-color printing, the device comprising:
the nozzle information acquisition module is used for acquiring the nozzle row number N of a single nozzle in the main scanning direction and the arrangement characteristics of N rows of nozzles, wherein N is not less than 2, and N is an integer;
the printing color obtaining module is used for obtaining the number M of color types printed by a single sprayer and the nozzle rows for printing each color according to the nozzle row number N and the arrangement characteristics, wherein M is more than or equal to 2, N is more than or equal to M, and M is an integer;
the printing precision acquisition module is used for acquiring the resolution of the nozzle array for printing each color and the printing precision of the image to be printed;
and the data extraction module is used for extracting the printing data required by current printing from the data array for printing each color according to the resolution of the nozzle array for printing each color and the printing precision.
9. A data extraction apparatus for single-nozzle multi-color printing, comprising: at least one processor, at least one memory, and computer program instructions stored in the memory that, when executed by the processor, implement the method of any of claims 1-7.
10. A storage medium having computer program instructions stored thereon, which when executed by a processor implement the method of any one of claims 1-7.
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| CN114103439A (en) * | 2020-08-26 | 2022-03-01 | 森大（深圳）技术有限公司 | Precision differential printing method, device and equipment for image and storage medium |
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