CN115447283A - Printing data processing method, device, equipment and medium for improving color block uniformity - Google Patents

Printing data processing method, device, equipment and medium for improving color block uniformity Download PDF

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Publication number
CN115447283A
CN115447283A CN202110638052.1A CN202110638052A CN115447283A CN 115447283 A CN115447283 A CN 115447283A CN 202110638052 A CN202110638052 A CN 202110638052A CN 115447283 A CN115447283 A CN 115447283A
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China
Prior art keywords
printing
nozzle
printing data
data
ink
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Granted
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CN202110638052.1A
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CN115447283B (en
Inventor
吴志亮
何伟
陈艳
黄中琨
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Shenzhen Hansen Software Co.,Ltd.
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Shenzhen Hosonsoft Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/015—Ink jet characterised by the jet generation process
    • B41J2/04—Ink jet characterised by the jet generation process generating single droplets or particles on demand
    • B41J2/045—Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
    • B41J2/04501—Control methods or devices therefor, e.g. driver circuits, control circuits
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
    • B41J3/54—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed with two or more sets of type or printing elements
    • B41J3/543—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed with two or more sets of type or printing elements with multiple inkjet print heads
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Ink Jet (AREA)

Abstract

The invention belongs to the technical field of printing, and provides a method, a device, equipment and a medium for processing printing data, which are used for improving the uniformity of color blocks. The printing data processing method for improving the uniformity of the color blocks comprises the following steps of S1: acquiring an ink amount required by printing an image to be printed by adopting original printing precision as a first printing ink amount; s2: processing the image to be printed according to the precision of the spray head to obtain first printing data; s3: splitting the first printing data into a plurality of sub-printing data corresponding to each spray head according to the number of the spray heads; s4: acquiring sub-printing data corresponding to the first nozzle as target printing data of the first nozzle; s5: and determining target printing data of each second spray head according to the first ink amount value and the sub-printing data corresponding to each spray head, so that the sum of the printing ink amounts of all the spray heads is equal to the first printing ink amount. The invention also includes apparatus, devices and media for performing the above methods. The invention can improve the uniformity of the printed image.

Description

Printing data processing method, device, equipment and medium for improving color block uniformity
Technical Field
The invention relates to the technical field of ink-jet printing, in particular to a method, a device, equipment and a medium for processing printing data, which can improve the uniformity of color blocks.
Background
The ink jet printing technology is a technology for obtaining images or characters by ejecting ink drops to a printing medium through nozzles on a nozzle, and mainly comprises two modes of reciprocating scanning printing and multi-nozzle side-by-side scanning printing. As shown in fig. 1, the shuttle scan printing is also called multi-pass scan printing, and the multi-pass scan printing means that each unit of the image to be printed needs to be interpolated for several times before printing is completed. Although the printing mode can realize printing with precision higher than that of the spray head, each area needs to be printed for multiple times, so that the printing efficiency is low, for example, 4pass scanning printing is adopted, each unit consists of 4 pixel points in the 4pass scanning printing, and one pixel point is printed in each scanning.
With the improvement of the requirements on printing precision and printing speed, in order to meet the requirements on printing precision and printing speed, a plurality of nozzles are spliced for printing at present, but the precision of the nozzles is limited, and the precision required by customers can not be met, so that the high precision can be realized only by adopting an insertion point paper feeding method, when the insertion point paper feeding method has a small hole interval, but the final printed image has the problems of non-uniformity, poor effect and the like due to the conditions of machine paper feeding errors, nozzle installation errors, machine shaking errors and the like. At present, a precision-reducing printing method is adopted, namely, the image precision is printed according to the precision of the spray heads, and other spray heads repeat the printing data of the first spray head, so that the printing ink quantity of the whole image is ensured to be the same.
Disclosure of Invention
In view of this, the present invention provides a method, an apparatus, a device and a medium for processing print data to improve uniformity of color blocks, so as to solve the technical problem that the prior art cannot reduce printing errors while improving uniformity of printed images.
The technical scheme adopted by the invention is as follows:
in a first aspect, the present invention provides a method for processing print data to improve color block uniformity, wherein a nozzle for printing comprises a first nozzle and at least one second nozzle, and the method comprises:
s1: acquiring an ink amount required by printing an image to be printed with original printing precision as a first printing ink amount;
s2: processing an image to be printed according to the precision of the spray head to obtain first printing data;
s3: splitting the first printing data into a plurality of sub-printing data corresponding to each spray head according to the number of the spray heads;
s4: acquiring sub-printing data corresponding to the first nozzle as target printing data of the first nozzle;
s5: and determining target printing data of each second spray head according to the first ink amount value and the sub-printing data corresponding to each spray head, so that the sum of the printing ink amounts of all the spray heads is equal to the first printing ink amount.
The first printing ink amount is the ink amount required by printing an image to be printed with original printing precision, and the target printing data of the second nozzle comprises sub-printing data corresponding to the target printing data.
Preferably, the step S5: determining target printing data of each second nozzle according to the first ink quantity value and the sub-printing data corresponding to each nozzle so that the sum of the printing ink quantities of all the nozzles is equal to the first printing ink quantity, and the method comprises the following steps;
s51: acquiring sub-printing data corresponding to the first spray head and sub-printing data corresponding to each second spray head;
s52: combining the sub-printing data corresponding to each second nozzle with the sub-printing data corresponding to the first nozzle to obtain reference printing data corresponding to each second nozzle;
s53: and determining target printing data of the second nozzle according to the ink amount difference value, the number of nozzles for printing the image to be printed and the reference printing data.
Preferably, the step S53: determining target printing data of a second nozzle according to the number of nozzles for printing the image to be printed and the reference printing data according to the ink amount difference, comprising the following steps;
s531: determining the ink amount required for printing all the sub-printing data as a second ink amount according to the sub-printing data corresponding to each nozzle;
s532: acquiring an ink amount required by target printing data of a first nozzle to be printed as a reference ink amount Vr;
s533: acquiring an ink amount difference Vd between a second printing ink amount and a first printing ink amount;
s534: acquiring the number N of nozzles for printing an image to be printed;
s335: comparing the Vd/Vr with the N-1;
s536: determining target printing data of the second nozzle according to the comparison result and the reference printing data;
wherein N is a positive integer greater than or equal to 2.
Preferably, the step S536: determining target print data of the second nozzle according to the comparison result and the reference print data, comprising the steps of:
s3561: if (Vd/Vr) > (N-1), selecting at least one spray head from the second spray heads as an adjusting spray head;
s3562: increasing the ink amount of the reference printing data corresponding to the adjusted nozzle to obtain target printing data corresponding to the adjusted nozzle;
s3563: and taking the reference printing data corresponding to the rest of the second nozzles as the target printing data corresponding to the rest of the nozzles.
Preferably, the step S536: determining target print data of the second nozzle according to the comparison result and the reference print data, comprising the steps of:
s3564: if (Vd/Vr) < (N-1), selecting at least one spray head from the second spray heads as an adjusting spray head;
s3565: reducing the ink amount of the reference printing data corresponding to the adjusted nozzle to obtain target printing data corresponding to the adjusted nozzle;
s3566: and taking the reference printing data corresponding to the rest of the second nozzles as the target printing data corresponding to the rest of the nozzles.
Preferably, in said S536: and determining target print data of the second nozzles according to the comparison result and the reference print data, and if (Vd/Vr) = (N-1), taking the reference print data corresponding to each second nozzle as the target print data corresponding to each second nozzle.
Preferably, the first print data is dot matrix data, and in S3: and splitting the first printing data into a plurality of sub-printing data corresponding to each sprayer according to the quantity of the sprayers, wherein the sub-printing data is dot matrix data, and the dot matrix position of an ink outlet point of each sub-printing data is different.
In a second aspect, the present invention further provides a device for processing print data to improve uniformity of color patches, the device comprising:
the printing device comprises a first printing ink quantity acquisition module, a second printing ink quantity acquisition module and a printing module, wherein the first printing ink quantity acquisition module is used for acquiring an ink quantity required by printing of an image to be printed with original printing precision as a first printing ink quantity;
the image processing module is used for processing the image to be printed according to the precision of the spray head to obtain first printing data;
the data splitting module is used for splitting the first printing data into a plurality of sub-printing data corresponding to each spray head according to the number of the spray heads;
the first nozzle printing data acquisition module is used for acquiring sub-printing data corresponding to the first nozzle as target printing data of the first nozzle;
and the second nozzle printing data determining module is used for determining target printing data of each second nozzle according to the first ink amount value and the sub-printing data corresponding to each nozzle so that the sum of the printing ink amounts of all the nozzles is equal to the first printing ink amount.
In a third aspect, the present invention further provides a device for processing print data to improve uniformity of color blocks, 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.
The present invention also provides in a fourth aspect a medium having stored thereon computer program instructions which, when executed by a processor, implement the method of the first aspect.
Has the beneficial effects that: the printing data processing method, the device, the equipment and the medium for improving the uniformity of the color blocks divide the data printed according to the precision of the spray heads into a plurality of sub data and print the sub data by the plurality of spray heads together. Since the target print data of the second head includes the sub print data corresponding thereto, the second head can print the sub print data printed with the head accuracy on the one hand and can accumulate the ink amount on the other hand. The first nozzle and the second nozzle respectively print according to the sub-printing data printed by the nozzle precision, on one hand, the fineness of the image is guaranteed, on the other hand, errors printed according to the nozzle precision are diffused, and therefore the printing errors are reduced. Meanwhile, the second nozzle is used for accumulating ink quantity, so that the final ink quantity is accumulated to reach the ink quantity of the original printing precision, and the uniformity of the printed image is ensured. Due to the fact that the nozzle is adopted for printing, the condition that the paper feeding distance is a small multiple of the hole distance is avoided, and therefore printing precision errors caused by machine paper feeding errors or nozzle installation errors or machine shaking errors and the like are avoided.
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, without any creative effort, other drawings may be obtained according to the drawings, and these drawings are all within the protection scope of the present invention.
FIG. 1 is a schematic diagram of multi-pass printing;
FIG. 2 is a flow chart of a method for processing print data to improve uniformity of color patches according to the present invention;
FIG. 3 is a flow chart of a method of determining target print data for a second nozzle in accordance with the present invention;
FIG. 4 is a schematic diagram of a first sub-print data combination according to the present invention;
FIG. 5 is a diagram illustrating a second sub-print data combination according to the present invention;
FIG. 6 is a flowchart of a method of determining target print data of a second head by an ink volume difference value of an accessory and reference print data according to the present invention;
FIG. 7 is a flowchart illustrating a first method of adjusting the ink output of the second nozzle according to the present invention;
FIG. 8 is a schematic view showing a state of an ink discharging point before adjustment of the ink amount according to the present invention;
FIG. 9 is a schematic diagram of an ink discharging point of the present invention after the ink amount is adjusted to be low based on FIG. 8;
FIG. 10 is a flowchart illustrating a second method of adjusting the ink output of the second nozzle according to the present invention;
FIG. 11 is a schematic diagram of an ink discharging point of the present invention after the ink amount is adjusted to be high based on FIG. 9;
FIG. 12 is a schematic structural diagram of a print data processing apparatus for improving uniformity of color patches according to the present invention;
FIG. 13 is a schematic structural diagram of a device for processing print data to improve uniformity of color patches according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments 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. In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention. 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 another like element in a process, method, article, or apparatus that comprises the element. In case of conflict, the embodiments of the present invention and the various features of the embodiments may be combined with each other within the scope of the present invention.
Example 1
As shown in fig. 2, an embodiment of the present invention discloses a method for processing print data to improve uniformity of color blocks, in which a nozzle for printing an image to be printed includes a first nozzle and at least one second nozzle, and the method includes:
s1: acquiring an ink amount required by printing an image to be printed with original printing precision as a first printing ink amount;
the present embodiment takes the amount of ink ejected to print an image with original printing accuracy as a reference standard, wherein a specific method of acquiring the first amount of printing ink is:
s11: acquiring the volume of each type of ink drop of the printing equipment;
the ink drop type in the present embodiment is a type obtained by classifying the volumes of ink drops, that is, ink drops of the same volume are of one type, and ink drops of different volumes are of different types. By controlling the driving waveforms of the nozzles, the nozzles of the printing device can eject ink droplets with different volumes, for example, some printing devices can eject a first ink droplet (a large ink droplet), a second ink droplet (a medium ink droplet) and a third ink droplet (a small ink droplet), wherein the volume of the first ink droplet is larger than that of the second ink droplet, the volume of the second ink droplet is larger than that of the third ink droplet, the number k of the types of ink droplets in this embodiment can be a positive integer of 2 or more, that is, the nozzles can eject ink droplets with at least two different volumes.
S12: acquiring the number of ink drops of each type, which are printed by adopting original printing precision, of an image to be printed;
for example, the printing apparatus can eject the aforementioned first ink droplet, second ink droplet, and third ink droplet, and the number N1 of the first ink droplets ejected from the head, the number N2 of the second ink droplets ejected from the head, and the number N3 of the third ink droplets ejected from the head when printing with the original printing accuracy are found in this step.
S13: and calculating to obtain a first printing ink quantity according to the volume of each type of ink drop and the quantity of each type of ink drop.
The specific calculation method is that the volume of each type of ink drop is multiplied by the number of the type of ink drop to obtain the printing ink quantity of each type of ink drop, and then the printing ink quantities of all types of ink drops are added to obtain the first printing ink quantity. The method of calculating the first printing ink drop by taking the case that the aforementioned nozzle ejects ink drops of three different volumes as an example may be: m1= V1 × N1+ V2 × N2+ V3 × N3, where M1 is the first amount of printing ink, V1 is the volume of the first ink droplet, V2 is the volume of the second ink droplet, and V3 is the volume of the third ink droplet.
S2: processing an image to be printed according to the precision of the spray head to obtain first printing data;
the precision of the nozzle is smaller than the original printing precision of the image to be printed, for example, the original printing precision is 720DPI, and the precision of the nozzle is 360DPI, it can be understood that the precision of the nozzle and the original printing precision in this embodiment may also be other values, as long as the precision of the nozzle is smaller than the original printing precision. Because the precision of the nozzle is less than the original printing precision, the ink amount required when printing is performed with the nozzle precision is less than the ink amount required when printing is performed with the original precision. The method for processing the image to be printed to obtain the first print data may be to input the image to be printed into the color management software, so that the image to be printed is processed according to the precision of the nozzle to obtain the first print data.
S3: splitting the first printing data into a plurality of sub-printing data corresponding to each spray head according to the number of the spray heads;
the method specifically comprises the following steps:
s31: acquiring the number N of nozzles for printing an image to be printed, wherein N is more than or equal to 2;
s32: splitting the first printing data into N parts of sub-printing data;
s33: and distributing the N parts of sub-printing data to N spray heads.
For example, the nozzle for printing an image to be printed is formed by splicing 3 nozzles, namely a nozzle P1, a nozzle P2 and a nozzle P3, wherein the nozzle P1 belongs to a first nozzle, and the nozzle P2 and the nozzle P3 belong to a second nozzle. At this time, the first print data may be divided into 3 copies of sub print data, in which the 1 st copy of sub print data is printed by the head P1, the 2 nd copy of sub print data is printed by the head P2, and the 3 rd copy of sub print data is printed by the head P3. In the step, the data originally printed by the first nozzle is split into N parts of sub-printing data according to the number of the spliced nozzles, then the N parts of sub-printing data are distributed to N nozzles for printing, each nozzle is distributed with one part of sub-printing data, and the N nozzles print the corresponding part of sub-printing data during printing. The first printing data printed according to the precision of the spray heads are printed by different spray heads, so that the error of the data can be diffused, and the conditions that the error of one spray head is large and the printing effect is not good are effectively avoided.
Wherein S32: splitting the first print data into N copies of sub-print data further comprises the steps of:
s321: acquiring a mask template with the same size as the first printing data;
s322: randomly splitting the first printing data into N parts of sub-printing data according to the mask template;
the mask template is a random data splitting template.
As a preferred methodThe first printing data is dot matrix data. The dot matrix data refers to a matrix array formed by a plurality of data distributed in a matrix array, the position of the data in the matrix array is the dot matrix position, for example, a matrix B with r rows and s columns is used for representing the dot matrix data of a first nozzle, for example, a matrix C with r rows and s columns is used for representing the dot matrix data of a second nozzle, wherein the data B ij The lattice position in the matrix array is ith row, jth column, data C ij The lattice position in the matrix array is also the ith row, jth column, in which case the data b ij And data C ij At the same lattice location. The data in the dot matrix data are divided into ink discharge data and ink non-discharge data, if the data is the ink discharge data, the nozzle is controlled to jet ink, and if the data is the ink non-discharge data, the nozzle is controlled not to discharge ink. When the image is processed, the printing equipment processes the image to be printed to obtain the dot matrix data of the printed image, and then controls the spray head to spray ink at the corresponding position of the printing medium according to the dot matrix data to form the printed image.
At the step S3: and splitting the first printing data into a plurality of sub-printing data corresponding to each sprayer according to the quantity of the sprayers, wherein the sub-printing data is dot matrix data, and the dot matrix position of an ink outlet point of each sub-printing data is different. By adopting the method, the same point does not exist when each spray head prints the first printing data, so that the error can be better diffused, and the printing effect is further improved.
S4: acquiring sub-printing data corresponding to the first nozzle as target printing data of the first nozzle;
and after the first printing data is split, one of the plurality of split sub-printing data is selected as target printing data of the first spray head, and the first spray head prints the target printing data.
S5: and determining target printing data of each second spray head according to the first ink amount value and the sub-printing data corresponding to each spray head, so that the sum of the printing ink amounts of all the spray heads is equal to the first printing ink amount.
The first printing ink amount is the ink amount required by printing an image to be printed with original printing precision, and the target printing data of the second nozzle comprises corresponding sub-printing data.
When the target print data of all the nozzles are determined, the printing device can control the first nozzle and the second nozzle to print according to the respective target print data.
When the target print data of the first head is determined, the second head prints according to the remaining sub-print data and the remaining amount of ink. Since the target print data of the second head includes the sub print data corresponding thereto, the second head prints the sub print data printed with the head accuracy on the one hand, and deposits the ink amount on the other hand. The first nozzle and the second nozzle respectively print according to the sub-printing data printed by the nozzle precision, on one hand, the fineness of the image is guaranteed, on the other hand, errors printed according to the nozzle precision are diffused, and therefore the printing errors are reduced. Meanwhile, the second nozzle is used for accumulating ink quantity, so that the final ink quantity is accumulated to reach the ink quantity of the original printing precision, and the uniformity of the printed image is ensured. Because the spray head is adopted for printing, the condition that the paper feeding distance is a small multiple of the hole distance is avoided, and the printing precision error caused by the conditions of machine paper feeding error, spray head installation error, machine shaking error and the like is avoided.
As a preferable embodiment, in this embodiment, the paper feeding distance (refresh height of 1 pass) after one scan printing is the length of one head. By adopting the mode, the ink yield of the printing equipment in the subsequent repeated printing process can be maximized, the uniformity of the image is ensured, and the printing efficiency is improved.
As shown in fig. 3, in the present embodiment, the S5: determining target printing data of each second nozzle according to the first ink quantity value and the sub-printing data corresponding to each nozzle so that the sum of the printing ink quantities of all the nozzles is equal to the first printing ink quantity, and the method comprises the following steps;
s51: acquiring sub-printing data corresponding to the first spray head and sub-printing data corresponding to each second spray head;
for example, the nozzle for printing an image to be printed is formed by splicing 3 nozzles, namely a nozzle P1, a nozzle P2 and a nozzle P3, wherein the nozzle P1 belongs to a first nozzle, and the nozzle P2 and the nozzle P3 belong to a second nozzle. At this time, the first printing data can be divided into 3 parts of sub printing data, namely data1, data2 and data 3. data1 is printed by the nozzle P1, data2 is printed by the nozzle P2, and data3 is printed by the nozzle P3. At this time, the sub print data2 corresponding to P2, the sub print data3 corresponding to P3, and the sub print data1 corresponding to P1 are acquired.
S52: combining the sub-printing data corresponding to each second spray head with the sub-printing data corresponding to the first spray head to obtain reference printing data corresponding to each second spray head;
when the combination is carried out, the reference printing data of each spray head in the second spray heads comprises the sub printing data corresponding to the spray head, and on the basis, the sub printing data originally distributed to the first spray head can be added to some or each second spray head according to the requirement to obtain the reference printing data corresponding to the spray heads.
As shown in fig. 4, for example, 1 part of new print data is obtained by combining the aforementioned 1 part of sub print data1 and one part of sub print data2, and the print data is used as the reference print data corresponding to the head P2, and at the same time, 1 part of new print data is obtained by combining the 1 st part of sub print data1 and the 1 st part of sub print data3, and the print data is used as the reference print data corresponding to the head P3.
For another example, one copy of the sub printing data2 is used as the reference printing data corresponding to the nozzle P2, and meanwhile, the 2 nd sub printing data1 and the 1 st sub printing data3 can be combined together to obtain 1 copy of new printing data, and the printing data is used as the reference printing data corresponding to the nozzle P3.
S53: and determining target printing data of the second nozzle according to the ink amount difference value, the number of nozzles for printing the image to be printed and the reference printing data.
And after the reference printing data is determined, adjusting the reference printing data of the second spray head according to the difference between the ink amount printed by adopting the reference printing data and the first printing ink amount, so that the final printing ink amount is the same as the first printing ink amount.
As shown in fig. 6, the S53: determining target printing data of a second nozzle according to the number of nozzles for printing the image to be printed and the reference printing data according to the ink amount difference, comprising the following steps;
s531: determining the ink amount required for printing all the sub-printing data as a second ink amount according to the sub-printing data corresponding to each nozzle;
the method specifically comprises the following steps:
acquiring the volume of each type of ink drop of the printing equipment;
the number of individual types of ink droplets for all sub-print data is acquired:
and calculating to obtain a second printing ink quantity M2 according to the volume of each type of ink drop and the quantity of each type of ink drop.
S532: acquiring an ink amount required by target printing data of a first nozzle to be printed as a reference ink amount Vr;
the method specifically comprises the following steps:
acquiring the volume of each type of ink drop of the printing equipment;
acquiring the number of each type of ink droplets in the target print data of the first head:
and calculating the reference ink quantity Vr according to the volume of each type of ink drop and the quantity of each type of ink drop.
S533: acquiring an ink amount difference Vd between a second printing ink amount and a first printing ink amount;
where Vd = M1-M2, M1 is the first printing ink amount, and M2 is the second printing ink amount.
S534: acquiring the number N of nozzles for printing an image to be printed;
s335: comparing the Vd/Vr with the N-1;
s536: and determining target printing data of the second nozzle according to the comparison result and the reference printing data.
The comparison result includes the following three cases:
as shown in fig. 7, the first case is (Vd/Vr) < (N-1), when the said S536: determining target print data of the second nozzle according to the comparison result and the reference print data, comprising the steps of:
s3564: if (Vd/Vr) < (N-1), selecting at least one spray head from the second spray heads as an adjusting spray head;
in this step, the second showerhead is divided into an adjustable showerhead and a non-adjustable showerhead (the showerhead except the adjustable showerhead in the second showerhead), wherein the number of the adjustable showerhead may be one or more, but not more than the total number of the second showerhead.
S3565: reducing the ink amount of the reference printing data corresponding to the adjusted nozzle to obtain target printing data corresponding to the adjusted nozzle;
the specific adjustment method may be to adjust some of the ink discharge data in the reference print data to ink discharge-free data to obtain target print data.
For example, when the ink droplets ejected by the printing device include a first ink droplet, a second ink droplet and a third ink droplet, wherein the volume of the first ink droplet is larger than that of the second ink droplet, and the volume of the second ink droplet is larger than that of the third ink droplet, the target print data may be obtained by modifying the data of ink discharge from the third ink droplet in the reference print data into the data of ink discharge.
As shown in fig. 8 and 9, each of the circles with hatching in fig. 8 and 9 represents a dot from which ink is discharged from the head, wherein the largest circle is a dot formed by a first ink droplet, the smallest circle is a dot formed by a second ink droplet, and the second largest circle is a dot formed by a second ink droplet. The target print data obtained by the data adjustment mode can enable the second nozzle to jet the first ink drop at the position where the reference print data jet the first ink drop, jet the second ink drop at the position where the reference print data jet the second ink drop, and not discharge ink at the position where the reference print data jet the third ink drop.
In addition, at least a part of the dot matrix data of the first nozzle may be adjusted to the data of ink discharge using ink droplets of a smaller volume as the dot matrix data of the adjusted nozzle. The adjustment of the ink amount is subject to the final printing ink drop being equal to the first printing ink amount.
S3566: and taking the reference printing data corresponding to the rest of the second nozzles as the target printing data corresponding to the rest of the nozzles.
The rest of the second nozzles, namely the non-adjustment nozzles, can directly adopt the reference printing data to print. In the foregoing case, the second heads repeat printing the print data of the first head in addition to printing the sub print data processed with the head accuracy, and adjust the ink discharge amount of some of the second heads down so that the total ink amount finally printed is equal to the first ink amount.
As shown in fig. 10, the second case is:
(Vd/Vr) > (N-1), when said S536: determining target print data of the second nozzle according to the comparison result and the reference print data, comprising the steps of:
s3561: if (Vd/Vr) > (N-1), selecting at least one spray head from the second spray heads as an adjusting spray head;
in this step, the second showerhead is divided into an adjustable showerhead and a non-adjustable showerhead (the showerhead except the adjustable showerhead in the second showerhead), wherein the number of the adjustable showerhead may be one or more, but not more than the total number of the second showerhead.
S3562: increasing the ink amount of the reference printing data corresponding to the adjusted nozzle to obtain target printing data corresponding to the adjusted nozzle;
the specific adjustment method may be to adjust at least a part of the dot matrix data of the first nozzle to be the data for discharging ink with a smaller volume of ink droplets to be the dot matrix data of the adjusted nozzle after adjusting the data for discharging ink with a larger volume of ink droplets.
For example, when the ink droplets ejected by the printing device include a first ink droplet, a second ink droplet, and a third ink droplet, wherein the volume of the first ink droplet is larger than that of the second ink droplet, and the volume of the second ink droplet is larger than that of the third ink droplet, the data of the third ink droplet may be adjusted to the data of the second ink droplet or the data of the first ink droplet, or the data of the second ink droplet may be adjusted to the data of the first ink droplet.
As shown in fig. 9 and 11, the largest circle in fig. 11 is a dot formed by a first ink droplet, and the second largest circle is a dot formed by a second ink droplet. The data adjusted by the steps can enable the second nozzle to jet the first ink drop with larger volume at the position of the second ink drop with the original equal jetting volume, so that the overall printing ink quantity of the second nozzle is improved, and the total ink quantity printed by all the nozzles can reach the ink quantity of the original printing precision. The ink volume is adjusted so that the final printed ink drop is equal to the first printed ink volume.
S3563: and taking the reference printing data corresponding to the rest of the second nozzles as the target printing data corresponding to the rest of the nozzles.
The rest of the second nozzles, i.e. the non-adjusted nozzles, can directly print by using the reference print data. In the foregoing case, the second heads repeat printing of the print data of the first head in addition to printing of the sub print data processed with the head accuracy, and adjust the ink discharge amount of some of the second heads high so that the total ink amount finally printed is equal to the first ink amount.
The third case is:
at said S536: and determining target print data of the second nozzles according to the comparison result and the reference print data, and if (Vd/Vr) = (N-1), taking the reference print data corresponding to each second nozzle as the target print data corresponding to each second nozzle.
In the foregoing case, the second head repeatedly prints the print data of the first head in addition to the allocated sub print data.
Example 2
Referring to fig. 12, the present embodiment provides a print data processing apparatus for improving uniformity of color patches, including:
the printing device comprises a first printing ink quantity acquisition module, a second printing ink quantity acquisition module and a printing module, wherein the first printing ink quantity acquisition module is used for acquiring an ink quantity required by printing of an image to be printed with original printing precision as a first printing ink quantity;
the image processing module is used for processing the image to be printed according to the precision of the spray head to obtain first printing data;
the data splitting module is used for splitting the first printing data into a plurality of parts of sub-printing data corresponding to each spray head according to the number of the spray heads;
the first nozzle printing data acquisition module is used for acquiring sub-printing data corresponding to the first nozzle as target printing data of the first nozzle;
and the second nozzle printing data determining module is used for determining target printing data of each second nozzle according to the first ink amount value and the sub-printing data corresponding to each nozzle so that the sum of the printing ink amounts of all the nozzles is equal to the first printing ink amount.
The first printing ink amount is the ink amount required by printing an image to be printed with original printing precision, and the target printing data of the second nozzle comprises sub-printing data corresponding to the target printing data.
The second nozzle print data determination module further comprises:
the sub-printing data acquisition sub-module is used for acquiring sub-printing data corresponding to the first spray head and sub-printing data corresponding to each second spray head;
the reference printing data acquisition sub-module is used for combining the sub-printing data corresponding to each second spray head with the sub-printing data corresponding to the first spray head to obtain the reference printing data corresponding to each second spray head;
and the second nozzle target printing data determining submodule is used for determining target printing data of a second nozzle according to the ink quantity difference, the number of nozzles for printing the image to be printed and the reference printing data.
Example 3
In addition, the method for processing the print data to improve the uniformity of the color blocks in the embodiment of the invention described in connection with fig. 13 can be implemented by a device for processing the print data to improve the uniformity of the color blocks. FIG. 13 is a diagram illustrating a hardware structure of a device for processing print data according to an embodiment of the present invention.
A print data processing apparatus to improve patch uniformity may include a processor 401 and a memory 402 storing computer program instructions.
In particular, 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.
Memory 402 may include mass storage for data or instructions. By way of example, and not limitation, memory 402 may include a Hard Disk Drive (HDD), floppy Disk Drive, flash memory, optical Disk, magneto-optical Disk, tape, or Universal Serial Bus (USB) Drive or a combination of two or more of these. Memory 402 may include removable or non-removable (or fixed) media, where appropriate. The 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 certain embodiments, memory 402 comprises Read Only Memory (ROM). Where appropriate, 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.
The processor 401 reads and executes computer program instructions stored in the memory 402 to implement the data addressing method for area random printing in any of the above embodiments.
The print data processing apparatus that improves patch uniformity in one example can 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 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.
The bus 410 includes hardware, software, or both that couple components for fractional ink output to each other. By way of example, and not limitation, a bus may include an Accelerated Graphics Port (AGP) or other graphics bus, an Enhanced Industry Standard Architecture (EISA) bus, a Front Side Bus (FSB), a Hypertransport (HT) interconnect, an Industry Standard Architecture (ISA) bus, an infiniband interconnect, a Low Pin Count (LPC) bus, a memory bus, a 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 these. Bus 410 may include one or more buses, where appropriate. Although specific buses have been described and shown in the embodiments of the invention, any suitable buses or interconnects are contemplated by the invention.
Example 4
In addition, in combination with the print data processing method for improving the uniformity of color blocks in the above embodiments, embodiments of the present invention can provide a computer readable medium for implementation. The computer readable medium having stored thereon computer program instructions; the computer program instructions, when executed by a processor, implement any of the above-described embodiments of a method for processing print data that improves uniformity of color patches.
The above is a detailed description of the method, apparatus, device and medium for processing print data to improve color block uniformity according to the embodiment of the present invention.
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, intranets, 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 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 at the same time.
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. The method for processing the printing data for improving the uniformity of the color blocks is characterized in that a nozzle for printing comprises a first nozzle and at least one second nozzle, and the method comprises the following steps:
s1: acquiring an ink amount required by printing an image to be printed with original printing precision as a first printing ink amount;
s2: processing an image to be printed according to the precision of the spray head to obtain first printing data;
s3: splitting the first printing data into a plurality of parts of sub-printing data corresponding to each spray head according to the number of the spray heads;
s4: acquiring sub-printing data corresponding to the first nozzle as target printing data of the first nozzle;
s5: determining target printing data of each second nozzle according to the first ink amount value and the sub-printing data corresponding to each nozzle, so that the sum of the printing ink amounts of all the nozzles is equal to the first printing ink amount;
the first printing ink amount is the ink amount required by printing an image to be printed with original printing precision, and the target printing data of the second nozzle comprises corresponding sub-printing data.
2. The method for processing the print data with improved color block uniformity as claimed in claim 1, wherein said S5: determining target printing data of each second nozzle according to the first ink quantity value and the sub-printing data corresponding to each nozzle so that the sum of the printing ink quantities of all the nozzles is equal to the first printing ink quantity, and the method comprises the following steps;
s51: acquiring sub-printing data corresponding to the first spray head and sub-printing data corresponding to each second spray head;
s52: combining the sub-printing data corresponding to each second nozzle with the sub-printing data corresponding to the first nozzle to obtain reference printing data corresponding to each second nozzle;
s53: and determining target printing data of the second nozzle according to the ink amount difference, the number of nozzles for printing the image to be printed and the reference printing data.
3. The method for processing print data with improved color block uniformity as claimed in claim 2, wherein said S53: determining target printing data of a second nozzle according to the number of nozzles for printing the image to be printed and the reference printing data according to the ink amount difference, comprising the following steps;
s531: determining the ink amount required for printing all the sub-printing data as a second ink amount according to the sub-printing data corresponding to each nozzle;
s532: acquiring an ink amount required by target printing data of a first nozzle to be printed as a reference ink amount Vr;
s533: acquiring an ink quantity difference Vd between a second printing ink quantity and a first printing ink quantity;
s534: acquiring the number N of nozzles for printing an image to be printed;
s335: comparing the Vd/Vr with the N-1;
s536: determining target printing data of the second nozzle according to the comparison result and the reference printing data;
wherein N is a positive integer greater than or equal to 2.
4. The method for processing print data according to claim 3, wherein the step S536: determining target print data of the second nozzle according to the comparison result and the reference print data, comprising the steps of:
s3561: if (Vd/Vr) > (N-1), selecting at least one spray head from the second spray heads as an adjusting spray head;
s3562: increasing the ink amount of the reference printing data corresponding to the adjusting nozzle to obtain target printing data corresponding to the adjusting nozzle;
s3563: and taking the reference printing data corresponding to the rest of the second nozzles as the target printing data corresponding to the rest of the nozzles.
5. The method for processing print data with improved uniformity of color blocks according to claim 3, wherein: the step S536: determining target print data of the second nozzle according to the comparison result and the reference print data, comprising the steps of:
s3564: if (Vd/Vr) < (N-1), selecting at least one spray head from the second spray heads as an adjusting spray head;
s3565: reducing the ink amount of the reference printing data corresponding to the adjusted nozzle to obtain target printing data corresponding to the adjusted nozzle;
s3566: and taking the reference printing data corresponding to the rest of the second nozzles as the target printing data corresponding to the rest of the nozzles.
6. The method for processing print data with improved color block uniformity as claimed in claim 5, wherein in said S536: and determining target print data of the second nozzles according to the comparison result and the reference print data, and if (Vd/Vr) = (N-1), taking the reference print data corresponding to each second nozzle as the target print data corresponding to each second nozzle.
7. The method for processing the print data with improved color block uniformity according to any one of claims 1 to 6, wherein the first print data is dot matrix data, and in the step S3: and splitting the first printing data into a plurality of sub-printing data corresponding to each sprayer according to the quantity of the sprayers, wherein the sub-printing data is dot matrix data, and the dot matrix position of an ink outlet point of each sub-printing data is different.
8. A print data processing apparatus for improving uniformity of color blocks, comprising:
the printing device comprises a first printing ink quantity acquisition module, a second printing ink quantity acquisition module and a printing module, wherein the first printing ink quantity acquisition module is used for acquiring an ink quantity required by printing of an image to be printed with original printing precision as a first printing ink quantity;
the image processing module is used for processing the image to be printed according to the precision of the spray head to obtain first printing data;
the data splitting module is used for splitting the first printing data into a plurality of parts of sub-printing data corresponding to each spray head according to the number of the spray heads;
the first nozzle printing data acquisition module is used for acquiring sub-printing data corresponding to the first nozzle as target printing data of the first nozzle;
the second nozzle printing data determining module is used for determining target printing data of each second nozzle according to the first ink amount value and the sub-printing data corresponding to each nozzle, so that the sum of the printing ink amounts of all the nozzles is equal to the first printing ink amount;
the first printing ink amount is the ink amount required by printing an image to be printed with original printing precision, and the target printing data of the second nozzle comprises corresponding sub-printing data.
9. Printing data processing equipment for improving color block uniformity is characterized by comprising the following steps: 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 medium having stored thereon computer program instructions, which when executed by a processor, implement the method according to any one of claims 1-7.
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