CN115447284A - Printing method, device and equipment for eliminating color difference of spray head and storage medium - Google Patents

Printing method, device and equipment for eliminating color difference of spray head and storage medium Download PDF

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Publication number
CN115447284A
CN115447284A CN202110638055.5A CN202110638055A CN115447284A CN 115447284 A CN115447284 A CN 115447284A CN 202110638055 A CN202110638055 A CN 202110638055A CN 115447284 A CN115447284 A CN 115447284A
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China
Prior art keywords
printing
ink
nozzles
nozzle
precision
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CN202110638055.5A
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CN115447284B (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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Priority to CN202110638055.5A priority Critical patent/CN115447284B/en
Priority to CN202311138640.4A priority patent/CN117341362A/en
Publication of CN115447284A publication Critical patent/CN115447284A/en
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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
    • B41J2/04508—Control methods or devices therefor, e.g. driver circuits, control circuits aiming at correcting other parameters
    • 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
    • B41J2/04535—Control methods or devices therefor, e.g. driver circuits, control circuits involving calculation of drop size, weight or volume
    • 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

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  • Ink Jet (AREA)

Abstract

The invention belongs to the technical field of printing, and provides a printing method, a printing device, printing equipment and a storage medium for eliminating color difference of a spray head. The printing method for eliminating the color difference of the nozzle comprises the following steps of S1: acquiring an ink amount required by printing an image to be printed with original printing precision as a first printing ink amount; s2: acquiring the ink amount required by printing the image to be printed by adopting the nozzle precision as a second printing ink amount; s3: acquiring position information of a nozzle of an inkjet color uniformizing portion; s4: and determining the stepping distance of the spray head after one-time scanning printing according to the position information and the ink quantity difference value. S5: and controlling at least one part of nozzles with uniform ink jet colors in the nozzles to print according to the precision of the nozzles, and printing the rest of nozzles according to the dot matrix positions printed by adopting the precision of the nozzles. The invention also comprises a device, equipment and a storage medium for executing the method. The invention can eliminate the color difference of the printed image caused by the nozzle difference in the spray head.

Description

Printing method, device and equipment for eliminating color difference of spray head and storage medium
Technical Field
The invention relates to the technical field of ink-jet printing, in particular to a printing method, a printing device, printing equipment and a storage medium for eliminating color difference of a nozzle.
Background
At present, in the working process of an industrial ink-jet printer, a printer nozzle sprays ink drops to form images or characters on a printing medium. As shown in fig. 1a, in order to satisfy high precision and high efficiency printing, an inkjet print head generally comprises a plurality of rows of nozzles, however, due to the manufacturing difference of each nozzle, an image printed by one nozzle may have a color difference problem, as shown in fig. 1 c; meanwhile, in order to increase the printable height of the nozzles in one-time scanning, a nozzle manufacturer designs the nozzles shown in fig. 1b, each nozzle in fig. 1b is formed by splicing 4 small rows of nozzles (1, 2, 3 and 4), and due to the manufacturing difference of each nozzle, the color difference problem that the colors of images printed by each row of nozzles are inconsistent exists. In the prior art, the adjustment of the color difference of the spray heads is realized by adjusting the pressure, the overall pressure adjustment can be carried out only on one spray head or a row of nozzles, the adjustment can not be carried out on a certain spray nozzle or a plurality of spray nozzles, and the problem of the color difference of the printed image caused by the different characteristics of part of the nozzles still exists.
Disclosure of Invention
In view of this, embodiments of the present invention provide a printing method, apparatus, device and storage medium for eliminating nozzle color difference, so as to solve the technical problem in the prior art that a printed image has color difference due to differences of nozzles in a nozzle.
The technical scheme adopted by the invention is as follows:
in a first aspect, the present invention provides a printing method for eliminating color difference of a nozzle, the method including:
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: acquiring the ink amount required by printing the image to be printed by adopting the nozzle precision as a second printing ink amount;
s3: acquiring the position information of a nozzle of a part with uniform ink jet color in a spray head;
s4: determining the stepping distance of the spray head after one-time scanning printing according to the position information and the ink quantity difference value of the first printing ink quantity and the second printing ink quantity;
s5: and controlling at least one part of nozzles with uniform ink jet colors in the nozzles to print according to the precision of the nozzles according to the stepping distance and the position information, and printing the rest of nozzles according to the dot matrix positions printed by adopting the precision of the nozzles.
Preferably, the ratio of S1: acquiring an ink amount required by printing an image to be printed with original printing precision as a first printing ink amount, and comprising the following steps of:
s11: acquiring the volume of each type of ink drop of the printing equipment;
s12: acquiring the number of ink drops of each type, which are printed by adopting original printing precision, of an image to be printed;
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.
Preferably, the ratio of S2: acquiring the ink amount required by printing an image to be printed by adopting the precision of the spray head as a second printing ink amount, and comprising the following steps of:
s21: acquiring the volume of each type of ink drop of the printing equipment;
s22: acquiring the number of ink drops of each type printed by adopting the nozzle precision;
s23: and calculating to obtain a second printing ink quantity according to the volume of each type of ink drop and the quantity of each type of ink drop.
Preferably, the step S4: determining the stepping distance of the nozzle after one-time scanning printing according to the position information and the ink quantity difference value between the first printing ink quantity and the second printing ink quantity, and comprising the following steps of:
s41: acquiring an ink quantity difference Vd between a second printing ink quantity and a first printing ink quantity;
s42: calculating an initial stepping distance according to a formula D1= 1/(Vd/Vr + 1) × L1, wherein L1 is the length of the nozzle, D1 is the initial stepping distance, and Vr is a second printing ink amount;
s43: determining the length L2 of the ink-jet color uniformizing part in the head according to the position information of the nozzles of the ink-jet color uniformizing part;
s44: comparing the initial stepping distance D1 with the length L2 of the uniform ink jet color part in the spray head;
s45: and determining the stepping distance of the spray head after one-time scanning printing according to the comparison result.
Preferably, the step S45: the step distance after the nozzle is scanned and printed for one time is determined according to the comparison result, which comprises the following steps:
s451: if the initial stepping distance D1 is smaller than or equal to the length L2 of the ink-jet color uniform part in the spray head, taking the initial stepping distance D1 as the stepping distance of the spray head after one-time scanning and printing;
s452: if the initial stepping distance D1 is larger than the length L2 of the ink jet color uniform part in the nozzle, taking the length L2 of the ink jet color uniform part in the nozzle as the stepping distance of the nozzle after one-time scanning printing;
preferably, if the initial step distance D1 is equal to or less than the length L2 of the ink ejection color uniform portion in the head, the S5 includes the steps of:
s51: selecting at least one part of nozzles from the nozzles of the uniform ink jet color part as a first group of nozzles and the rest of nozzles of the spray head as a second group of nozzles according to the stepping distance and the position information;
s52: controlling the first group of nozzles to print according to the precision of the spray head;
s53: acquiring printing data printed by a first group of nozzles as first printing data;
s54: and controlling the second group of nozzles to repeatedly print according to the first printing data.
Preferably, 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 the volume of the second ink droplet, the volume of the second ink droplet is larger than the volume of the third ink droplet, and if the initial stepping distance D1 is less than or equal to the length L2 of the uniform portion of the ink ejection color in the head, the S5 includes the steps of:
s501: selecting at least one part of nozzles from the nozzles with uniform ink jet colors as a first group of nozzles and the rest nozzles of the spray head as a second group of nozzles according to the stepping distance and the position information;
s502: controlling the first group of nozzles to print according to the precision of the spray head;
s503: acquiring printing data printed by a first group of nozzles as first printing data;
s504: adjusting the data of ink output by adopting the third ink drop in the first printing data into the data of ink output failure to obtain first intermediate printing data;
s505: acquiring an ink amount of printing by the second group of nozzles using the first intermediate print data as a third print ink amount;
s506: comparing the third printing ink amount with the ink amount difference value;
s507: obtaining second printing data according to the comparison results of the first intermediate printing data, the third printing ink amount and the ink amount difference value;
s508: and controlling the second group of nozzles to print according to the second printing data.
Preferably, the ink drops ejected by the printing device include a first ink drop, a second ink drop and a third ink drop, wherein the volume of the first ink drop is larger than that of the second ink drop, and the volume of the second ink drop is larger than that of the third ink drop; if the initial stepping distance D1 is larger than the length L2 of the uniform part of the ink jet color in the spray head, the step S5 comprises the following steps:
s510: selecting nozzles of the part with uniform ink jet color as a third group of nozzles according to the position information, and using the rest nozzles of the spray head as the rest nozzles as four groups of nozzles;
s520: controlling the third group of nozzles to print according to the precision of the spray head;
s530: acquiring printing data printed by a third group of nozzles as third printing data;
s540: adjusting the third ink drop ink output data in the third printing data into ink non-output data to obtain second intermediate printing data;
s550: acquiring an ink amount of printing by the second group of nozzles using the second intermediate print data as a fourth print ink amount;
s560: comparing a fourth printing ink amount with the ink amount difference;
s570: obtaining third printing data according to the second intermediate printing data and the comparison result of the fourth printing ink amount and the ink amount difference value;
s580: and controlling the fourth group of nozzles to print according to the third printing data.
In a second aspect, the present invention further provides a printing apparatus for eliminating color difference of a nozzle, the apparatus 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 second printing ink quantity acquisition module is used for acquiring the ink quantity required by printing the image to be printed by adopting the nozzle precision as a second printing ink quantity;
the position information acquisition module is used for acquiring the position information of nozzles of a part with uniform ink jet color in the spray head;
the step distance obtaining module is used for determining the step distance of the spray head after one-time scanning printing according to the position information and the ink quantity difference value of the first printing ink quantity and the second printing ink quantity;
and the control module is used for controlling at least one part of nozzles with uniform ink jet colors in the nozzles to print according to the nozzle precision according to the stepping distance and the position information, and the rest of nozzles print according to the dot matrix positions printed by adopting the nozzle precision.
In a third aspect, the present invention further provides a printing apparatus for eliminating color difference of a nozzle, including: 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 the first aspect.
The present invention also provides in a fourth aspect a storage medium having stored thereon computer program instructions which, when executed by a processor, implement the method of the first aspect.
Has the advantages that: the invention discloses a printing method, a device, equipment and a storage medium for eliminating chromatic aberration of a nozzle. The invention utilizes the nozzles of the part with uniform ink jet color in the nozzle to print according to the precision of the nozzle, and the other nozzles only print repeatedly according to the dot matrix position printed by adopting the precision of the nozzle, thereby not only ensuring the fineness of the image, but also eliminating the defect of non-uniform color of the printed image caused by the inconsistency of the nozzles in the nozzle, and simultaneously keeping the same printing ink amount. Because the precision of 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 progress dislocation caused by the conditions of machine paper feeding errors, spray head installation errors, machine shaking errors and the like can be prevented. In addition, the invention utilizes part of nozzles in the nozzle to print according to the precision of the nozzle, and combines with the repeated printing of the other nozzles at the same position to ensure that the ink quantity reaches the ink quantity of the original printing precision, so that the uniformity of the printed image can be obviously improved.
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. 1a is a schematic structural diagram of a printer head;
FIG. 1b is a schematic view of a printer head assembled by four rows of small nozzles;
FIG. 1c is a printed test chart for obtaining nozzle color difference information;
FIG. 2 is a flow chart of a printing method for eliminating chromatic aberration of a nozzle according to the present invention;
FIG. 3 is a flow chart of a method of determining a step distance in accordance with the present invention;
FIG. 4 is a schematic illustration of the length of the spray head and the nozzle sequencing of the present invention;
FIG. 5 is a flowchart of a first method for controlling a nozzle to print according to the present invention;
FIG. 6 is a flowchart of a second method for controlling a nozzle to print according to the present invention;
FIG. 7 is a schematic diagram of ink discharge from a nozzle during precision printing when the nozzle is installed according to the present invention;
FIG. 8 is a schematic diagram of adjusting the ink discharge of the inkjet head according to the present invention;
FIG. 9 is a schematic view of another embodiment of the present invention for adjusting the ink output of the printhead;
FIG. 10 is a flowchart illustrating a third method for controlling a nozzle to print according to the present invention;
FIG. 11 is a schematic view of multiple pass steps in printing with a nozzle having a uniform initial portion according to the present invention;
FIG. 12 is a schematic structural diagram of a printing apparatus for removing color aberration of a nozzle according to the present invention;
fig. 13 is a schematic structural diagram of a printing apparatus for eliminating chromatic aberration of a nozzle 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 should be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. 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", etc. indicate orientations or positional relationships based on those shown in the drawings, merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to 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 phrases "comprising 8230; \8230;" 8230; "does not exclude the presence of additional like elements 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 printing method for eliminating color difference of a nozzle, where the method includes:
s1: acquiring an ink amount required by printing an image to be printed by adopting 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 type in this embodiment is a type obtained by classifying the volumes of ink droplets, that is, ink droplets having the same volume are one type, and ink droplets having different volumes are classified into different types. By controlling the driving waveform of the ejection head, the ejection head of the printing device can eject ink droplets with different volumes, for example, some printing devices can eject a first ink droplet (large ink droplet), a second ink droplet (medium ink droplet) and a third ink droplet (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, in this embodiment, the number k of the types of ink droplets can be a positive integer greater than or equal to 2, that is, the ejection head 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 the types of ink drops are added to obtain the first printing ink quantity. The method of calculating the first print drop, taking as an example the aforementioned ejection head ejecting three different volumes of drops, may be: m1= V1 × N1+ V2 × N2+ V3 × N3, where M1 is the first printing ink amount, 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: acquiring an ink amount required by printing an image to be printed by adopting the nozzle precision as a second printing ink amount;
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 specific steps of acquiring the second printing ink quantity are as follows;
s21: acquiring the volume of each type of ink drop of the printing equipment;
s22: acquiring the number of each type of ink drop printed by adopting the precision of the spray head;
for example, when printing is performed according to the progress of the nozzles, three types of ink droplets, namely a first type of ink droplet, a second type of ink droplet and a third type of ink droplet, need to be ejected, and then the number of one type of ink droplet ejected by the nozzles, the number of the second type of ink droplet ejected by the nozzles and the number of the third type of ink droplet ejected by the nozzles when printing is performed with the accuracy of the nozzles are found in this step.
S23: and calculating to obtain a second 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 the types of ink drops are added to obtain a second printing ink quantity.
S3: acquiring position information of a nozzle of a part with uniform ink jet color in a nozzle;
as shown in fig. 1c, although the ink jet color of the entire head may be non-uniform, nozzles having uniform ink jet color (e.g., the area A1 in the figure) may exist in a local area of the head, so that the nozzles having uniform ink jet color in this step are areas where several consecutive nozzles having uniform ink jet color exist in the head, and the position information of the nozzles located in the aforementioned areas may be represented by the serial number of the nozzles in the head, for example, in fig. 4, the position of the fourth nozzle located in the longitudinal direction of the head may be represented by the serial number 4 in the figure.
The method in which the positional information of the nozzles of the ink-jet color-uniform portion is acquired can be realized by making a test chart. Specifically, the nozzles are controlled to print a test chart (as shown in fig. 1 c), and then the test chart obtained by scanning and printing is used to obtain the position of each nozzle with chromatic aberration and the situation of chromatic aberration,
s4: and determining the stepping distance of the spray head after one-time scanning printing according to the position information and the ink quantity difference value of the first printing ink quantity and the second printing ink quantity.
Shuttle scan printing is also called multi-pass scan printing. The multi-pass scanning printing is to realize multiple interpolation of each unit of an image to be printed by utilizing the alternation of the spray head in the scanning direction and the stepping direction, wherein the scanning direction is vertical to the nozzle arrangement direction, and the stepping direction is parallel to the nozzle arrangement direction. In multi-pass scanning printing, the nozzle moves a certain distance relative to the printing medium along the stepping direction after completing one scanning printing along the scanning direction, and then the distance is the stepping distance after the next scanning printing.
In multi-pass scanning printing, each unit needs to be subjected to multi-time coverage printing, and if 2-pass scanning printing is adopted, each unit needs 2 times of coverage printing to finish printing of one unit area; 3pass scanning printing needs 3 times of covering printing to finish printing of one unit area; 4pass scan printing completes printing of one unit area every 4 times of overlay printing is required.
Wherein the S4: determining the stepping distance of the nozzle after one-time scanning printing according to the position information and the ink quantity difference value between the first printing ink quantity and the second printing ink quantity, and further comprising the following steps:
s41: acquiring an ink amount difference Vd between a second printing ink amount and a first printing ink amount;
the method for calculating the ink amount difference comprises the following steps: vd = M1-M2, where M1 is the first printing ink amount and M2 is the second printing ink amount.
S42: calculating an initial stepping distance according to a formula D1= 1/(Vd/Vr + 1) × L1, wherein L1 is the length of the nozzle, D1 is the initial stepping distance, and Vr is a second printing ink amount;
as shown in fig. 4, the length of the head refers to the distance from the center of the first nozzle of the head to the center of the last nozzle of the head in the nozzle arrangement direction, i.e., the x direction in fig. 4 (the direction perpendicular to the scanning direction of the head, the y direction in fig. 10), for example, if the distance between two adjacent nozzles in fig. 4 is d, the length of the head having 10 nozzles is 9d. For convenience of calculation, the length of the head may be expressed by the number of nozzles of the head in the nozzle arrangement direction, for example, the head having the length of 9d (corresponding to 10 nozzles) may be expressed by the head having the length of 9 (corresponding to 10 nozzles), where the number is the number of nozzles of the head in the nozzle arrangement direction.
S43: determining the length L2 of the ink jet color uniform part in the spray head according to the position information of the nozzles of the ink jet color uniform part;
the method comprises the following specific steps:
s331: acquiring a minimum nozzle serial number N1 and a maximum nozzle serial number N2 of a part with uniform ink jet color in the nozzle according to the position information;
for example, when nozzles numbered 1 to 5 in the drawing are nozzles of a uniform ink ejection color portion in the head, N1=1 and N2=5.
S332: and calculating the length L2 of the uniform ink jet color part in the spray head according to the formula L2= (N2-N1) × d, wherein d is the distance between two adjacent spray nozzles.
S44: comparing the initial stepping distance D1 with the length L2 of the uniform ink jet color part in the spray head;
s45: and determining the stepping distance of the spray head after one-time scanning printing according to the comparison result.
In order to completely complete the part printed with the precision of the nozzle by the uniform ink jet nozzle, the embodiment compares the initial stepping distance D1 with the length L2 of the uniform ink jet color part in the nozzle, and then determines the final stepping distance for printing according to the comparison result.
And S45: the step distance after the nozzle is scanned and printed for one time is determined according to the comparison result, and the step distance comprises the following steps:
s451: if the initial stepping distance D1 is less than or equal to the length L2 of the ink-jet color uniform part in the spray head, taking the initial stepping distance D1 as the stepping distance of the spray head after one-time scanning printing;
s452: if the initial stepping distance D1 is larger than the length L2 of the ink jet color uniform part in the nozzle, the length L2 of the ink jet color uniform part in the nozzle is used as the stepping distance of the nozzle after one-time scanning printing.
The printing equipment processes an image to be printed to obtain dot matrix data of the printed image, and then controls the spray head to spray ink at the corresponding position of a printing medium according to the dot matrix data to form the printed image.
Because the ink jet is completed by the nozzle, the dot matrix data for controlling the nozzle to jet ink is the dot matrix data corresponding to the nozzle. When the dot matrix data of the ejection head is determined, the amount of printing ink of the ejection head at the time of printing is also determined. The amount of printing ink of the head can be adjusted by adjusting the dot matrix data. The formula for calculating the ink amount difference in this step is Vd = M1-M2, where M1 is the first printing ink amount and M2 is the second printing ink amount.
S5: and controlling at least one part of nozzles with uniform ink jet colors in the nozzles to print according to the precision of the nozzles according to the stepping distance and the position information, and printing the rest of nozzles according to the positions of the dot matrix printed by adopting the precision of the nozzles.
When the nozzles with uniform ink jet colors and accurately printed by the installed spray heads are determined, the image to be printed is processed to obtain the printing data corresponding to the nozzles, and the data obtained by processing the image to be printed is dot matrix data. The dot matrix data is composed of 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, the dot matrix data of a first nozzle is represented by a matrix B with r rows and s columns, for example, the dot matrix data of a second nozzle is represented by a matrix C with r rows and s columns, 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. The dot matrix position printed by the nozzle refers to the dot matrix position of the ink outlet data in the dot matrix data of the nozzle. The other nozzles are printed according to the dot matrix positions printed by adopting the nozzle precision, that is, if the ink jet color is uniform and the data of a certain dot matrix position of the nozzle printed by adopting the nozzle precision is ink non-discharge data, the data of the same dot matrix position of the other nozzles are ink non-discharge data; if the ink jet color is uniform and the data of a certain dot matrix position of the nozzle printed by the nozzle precision is ink output data, the data of the same dot matrix position of the rest nozzles can be the ink output data or the ink non-output data. That is, the dot matrix positions printed by the other nozzles can only be selected from the dot matrix positions of the nozzles which have uniform ink jet colors and are printed by adopting the nozzle precision. Because the dot matrix position of the ink output data corresponds to the ink jet position of the spray head on the printing medium one by one, the rest nozzles only jet ink at the positions of the nozzles which have uniform ink jet colors and adopt the spray head to print accurately.
This embodiment utilizes the nozzle of the even part of inkjet colour to print according to the shower nozzle precision in the shower nozzle, and other nozzles only carry out repeated printing according to the dot matrix position that adopts the shower nozzle precision to print, has so both guaranteed the exquisite degree of image, has eliminated the inhomogeneous defect of printing image colour that the nozzle inconsistency of shower nozzle inside caused again, has kept the china ink volume of the same printing simultaneously. 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 printing progress dislocation caused by the conditions of machine paper feeding errors, spray head installation errors, machine shaking errors and the like can be prevented. In addition, the invention utilizes part of nozzles in the nozzle to print according to the precision of the nozzle, and combines with the repeated printing of the other nozzles at the same position to ensure that the ink quantity reaches the ink quantity of the original printing precision, so that the uniformity of the printed image can be obviously improved.
Example 2
As shown in fig. 5, in the present embodiment, when the initial step distance D1 is equal to or less than the length L2 of the ink ejection color uniform portion in the head, S5: specifically, a method is described in which at least a part of nozzles of the nozzles, which are used for uniformly printing the ink jet color, are controlled to print according to the accuracy of the nozzles according to the step distance and the position information, and the remaining nozzles print according to the positions of a dot matrix printed with the accuracy of the nozzles, the method including the steps of:
s51: selecting at least one part of nozzles from the nozzles of the uniform ink jet color part as a first group of nozzles and the rest of nozzles of the spray head as a second group of nozzles according to the stepping distance and the position information;
when the initial stepping distance D1 is less than or equal to the length L2 of the uniform ink jet color part in the nozzle, the initial stepping distance D1 is used as the stepping distance after the nozzle performs scanning printing once, so that one continuous nozzle can be selected from the nozzles of the uniform ink jet color part to install the nozzle for precision printing, and the rest nozzles perform repeated printing.
For example, if the nozzles numbered 1 to 5 in fig. 4 are nozzles of an ink jet color uniformizing portion, the length L2=4D of the ink jet color uniformizing portion, and if the initial distance D1 is 3D, the nozzles numbered 1 to 4 may be selected as the first group of nozzles, and the nozzles numbered 5 to 10 may be selected as the second group of nozzles.
S52: controlling the first group of nozzles to print according to the precision of the spray head;
that is, the nozzles of the screened ink jet color are controlled to print an image with the head accuracy.
S53: acquiring printing data printed by a first group of nozzles as first printing data;
processing an image to be printed according to the precision of the spray head to obtain dot matrix data printed according to the precision of the spray head, and acquiring printing data printed by a first group of nozzles from the dot matrix data to obtain first printing data.
S54: and controlling the second group of nozzles to repeatedly print according to the first printing data.
I.e., controls the remaining nozzles to repeatedly print the print data of the first group of nozzles.
Example 3
As shown in fig. 6, in the present embodiment, the ink droplets ejected by the printing apparatus include a first ink droplet, a second ink droplet, and a third ink droplet, wherein the first ink droplet has a volume larger than that of the second ink droplet, and the second ink droplet has a volume larger than that of the third ink droplet.
This embodiment is such that when the initial step distance D1 is equal to or less than the length L2 of the ink ejection color uniform portion in the head, S5: specifically, another method is described in which at least a part of nozzles of the nozzles, which have uniform inkjet colors, are controlled to print according to the accuracy of the nozzles according to the step distance and the position information, and the remaining nozzles print according to the positions of a dot matrix printed with the accuracy of the nozzles, the method including the steps of:
s501: selecting at least one part of nozzles from the nozzles of the uniform ink jet color part as a first group of nozzles and the rest of nozzles of the spray head as a second group of nozzles according to the stepping distance and the position information;
because the initial stepping distance D1 is less than or equal to the length L2 of the uniform ink jet color part in the nozzle, the initial stepping distance D1 is used as the stepping distance after the nozzle performs scanning printing once, one continuous nozzle can be selected from the nozzles of the uniform ink jet color part to perform printing according to the precision of the nozzle, and the rest of the nozzles perform repeated printing.
S502: controlling the first group of nozzles to print according to the precision of the spray head;
that is, the nozzles of the screened ink jet color are controlled to print an image with the head accuracy.
S503: acquiring printing data printed by a first group of nozzles as first printing data;
processing an image to be printed according to the precision of the spray head to obtain dot matrix data printed according to the precision of the spray head, and acquiring printing data printed by a first group of nozzles from the dot matrix data to obtain first printing data.
S504: adjusting the data of ink output by adopting the third ink drop in the first printing data into the data of ink output failure to obtain first intermediate printing data;
the first group of nozzles jet three ink drops with different volumes, namely a first ink drop, a second ink drop and a third ink drop when printing according to the nozzle precision. In order to improve printing efficiency while ensuring printing uniformity, the second head ejects first and second ink droplets having relatively large volumes in printing without ejecting third ink droplets having small volumes.
As shown in fig. 7 and 8, each of the circles with hatching in fig. 7 and 8 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 first intermediate dot matrix data obtained by the data adjustment mode can enable the second group of nozzles to jet the first ink drops at the positions where the first group of nozzles jet the first ink drops, jet the second ink drops at the positions where the first group of nozzles jet the second ink drops and not discharge ink at the positions where the first group of nozzles jet the third ink drops, so that a printed image is uniform.
S505: acquiring an ink amount of printing by the second group of nozzles using the first intermediate print data as a third print ink amount;
in the step, the ink quantity when only the first ink drop and the second ink drop with larger volumes are used for printing is calculated as the third printing ink quantity.
S506: comparing a third printing ink amount with the ink amount difference;
s507: obtaining second printing data according to the comparison results of the first intermediate printing data, the third printing ink amount and the ink amount difference value;
if the third printing ink amount is smaller than the ink amount difference, it indicates that the ink amount is insufficient, and otherwise, it indicates that the ink amount is sufficient. If the ink amount is insufficient, part of the second ink droplets is converted into the first ink droplets. As shown in fig. 8 and 9, the largest circle in fig. 9 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 group of nozzles to jet the first ink drop with larger volume at the position of the second ink drop with the original jetting volume being equal, so that the overall printing ink quantity of the second group of nozzles is improved, and the total ink quantity printed by all the nozzles can reach the ink quantity of the original printing precision.
When the ink amount is insufficient, a part of the third ink drop is replenished to obtain second printing data. The first intermediate print data is directly printed as second print data if the amount of ink is sufficient.
S508: and controlling the second group of nozzles to print according to the second printing data.
The second print data may be determined to control the second set of nozzles to repeatedly print according to the second print data.
As shown in fig. 11, as a preferred embodiment, the inkjet color uniform portion is an initial uniform portion, that is, a portion where the inkjet head first enters the printing area to jet ink and the ejected color is uniform. When the initial stepping distance is smaller than the length of the nozzle of the initial uniform part of the color difference of the nozzle, the repeated printing is carried out according to the initial stepping distance, the repeated printing is carried out according to the 1 st printing data in each time, the stepping distance is 1/3 of the height of the nozzle in the figure, the printing is carried out for the first time for installing the nozzle precision, and the printing is carried out for the first time for repeating the second time and the third time.
Example 4
As shown in fig. 10, in the present embodiment, the ink droplets ejected by the printing apparatus include a first ink droplet, a second ink droplet, and a third ink droplet, wherein the first ink droplet has a volume larger than that of the second ink droplet, and the second ink droplet has a volume larger than that of the third ink droplet.
This embodiment is configured such that when the initial step distance D1 is larger than the length L2 of the ink ejection color uniform portion in the head, S5: controlling at least one part of nozzles with uniform ink jet colors in the nozzles to print according to the nozzle precision according to the stepping distance and the position information, and specifically introducing the rest of nozzles to print according to the dot matrix positions printed by the nozzle precision, wherein the method comprises the following steps:
s510: selecting nozzles of the uniform ink jet color part as a third group of nozzles according to the position information, and using the rest nozzles of the spray head as the rest nozzles as four groups of nozzles;
because the initial stepping distance D1 is larger than the length L2 of the uniform ink jet color part in the nozzle, the length L2 of the uniform ink jet color part in the nozzle is used as the stepping distance after the nozzle performs scanning printing once, the nozzle can be installed on the uniform ink jet color part in the nozzle to perform printing with precision, and the rest nozzles perform repeated printing.
S520: controlling the third group of nozzles to print according to the precision of the spray head;
namely, the uniform part of the ink jet color in the nozzle is controlled to print the image according to the accuracy of the nozzle.
S530: acquiring printing data printed by a third group of nozzles as third printing data;
and processing the image to be printed according to the precision of the spray head to obtain dot matrix data printed according to the precision of the spray head, and acquiring the print data printed by the nozzles belonging to the third group from the dot matrix data as third print data.
S540: adjusting the third ink drop ink output data in the third printing data into ink non-output data to obtain second intermediate printing data;
the third group of nozzles jet three ink drops with different volumes, namely a first ink drop, a second ink drop and a third ink drop when printing according to the precision of the nozzle. In order to improve printing efficiency while ensuring printing uniformity, the second head ejects first and second ink droplets having relatively large volumes in printing without ejecting third ink droplets having small volumes.
S550: acquiring an ink amount of printing by the second group of nozzles using the second intermediate print data as a fourth print ink amount;
in the step, the ink quantity when only the first ink drop and the second ink drop with larger volumes are used for printing is calculated as the fourth printing ink quantity.
S560: comparing the fourth printing ink amount with the magnitude of the ink amount difference.
S570: obtaining third printing data according to the intermediate printing data and the comparison result of the fourth printing ink amount and the ink amount difference value;
if the fourth printing ink amount is smaller than the ink amount difference, it indicates that the ink amount is insufficient, and otherwise, it indicates that the ink amount is sufficient. If the ink quantity is insufficient, part of the second ink drops are converted into the first ink drops, and when the ink quantity is insufficient, part of the third ink drops are supplemented to obtain second printing data, so that the total ink quantity printed by all the nozzles can reach the ink quantity of the original printing precision. And if the amount of ink is sufficient, directly printing the second intermediate print data as second print data.
S580: and controlling the fourth group of nozzles to print according to the third printing data.
The second print data may be determined to control the fourth group of nozzles to repeatedly print according to the second print data.
Example 5
Referring to fig. 12, the embodiment provides a printing apparatus for eliminating color difference of a nozzle, 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 second printing ink quantity acquisition module is used for acquiring the ink quantity required by printing the image to be printed by adopting the nozzle precision as a second printing ink quantity;
the position information acquisition module is used for acquiring the position information of nozzles of the part with uniform ink jet color in the spray head;
the step distance determining module is used for determining the step distance after the nozzle performs one-time scanning printing according to the position information and the ink quantity difference value of the first printing ink quantity and the second printing ink quantity;
and the control module is used for controlling at least one part of nozzles with uniform ink jet colors in the nozzles to print according to the precision of the nozzles according to the stepping distance and the position information, and the rest of nozzles print according to the dot matrix positions printed by adopting the precision of the nozzles.
The step distance determination module further comprises:
the ink quantity difference obtaining submodule is used for obtaining an ink quantity difference Vd between the second printing ink quantity and the first printing ink quantity;
a calculation submodule, configured to calculate an initial step distance according to a formula D1= 1/(Vd/Vr + 1) × L1, where L1 is a length of the head, D1 is the initial step distance, and Vr is a second amount of printing ink;
the length obtaining submodule is used for determining the length L2 of the ink jet color uniform part in the spray head according to the position information of the nozzles of the ink jet color uniform part;
the comparison submodule is used for comparing the initial stepping distance D1 with the length L2 of the ink-jet color uniform part in the spray head;
and the step distance determination submodule is used for determining the step distance after the spray head scans and prints for one time according to the comparison result.
Example 6
In addition, the printing method for eliminating the color difference of the nozzles according to the embodiment of the present invention described in connection with fig. 13 can be implemented by a printing apparatus for eliminating the color difference of the nozzles. Fig. 13 is a schematic diagram illustrating a hardware structure of a printing apparatus for eliminating chromatic aberration of a nozzle according to an embodiment of the present invention.
A printing device that eliminates nozzle color differences may include a processor 401 and a memory 402 that stores 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 a 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 non-volatile solid-state memory. In a particular embodiment, the memory 402 includes 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.
A printing device that eliminates nozzle color differences in one example may also include a communication interface 403 and a bus 410. As shown in fig. 6, the processor 401, the memory 402, and the communication interface 403 are connected 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 illustrated with respect to embodiments of the invention, any suitable buses or interconnects are contemplated by the invention.
Example 7
In addition, in combination with the printing method for eliminating color difference of the nozzles in the above embodiments, embodiments of the present invention may provide a computer-readable storage medium to implement the method. 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 a printing method for removing color aberration of a nozzle.
The above is a detailed description of the printing method, apparatus, device and storage medium for eliminating color difference of the nozzle provided by 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-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 (11)

1. A printing method for eliminating chromatic aberration of a nozzle, the method comprising:
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: acquiring the ink amount required by printing the image to be printed by adopting the nozzle precision as a second printing ink amount;
s3: acquiring position information of a nozzle of a part with uniform ink jet color in a nozzle;
s4: determining the stepping distance of the spray head after one-time scanning printing according to the position information and the ink quantity difference value of the first printing ink quantity and the second printing ink quantity;
s5: and controlling at least one part of nozzles with uniform ink jet colors in the nozzles to print according to the precision of the nozzles according to the stepping distance and the position information, and printing the rest of nozzles according to the positions of the dot matrix printed by adopting the precision of the nozzles.
2. The printing method for eliminating the chromatic aberration of the nozzles as claimed in claim 1, wherein the S1: acquiring an ink amount required by printing an image to be printed with original printing precision as a first printing ink amount, and comprising the following steps;
s11: acquiring the volume of each type of ink drop of the printing equipment;
s12: acquiring the number of ink drops of each type, which are printed by adopting original printing precision, of an image to be printed;
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.
3. The printing method for eliminating the chromatic aberration of the nozzles as claimed in claim 1, wherein S2: acquiring the ink amount required by printing an image to be printed by adopting the nozzle precision as a second printing ink amount, and comprising the following steps;
s21: acquiring the volume of each type of ink drop of the printing equipment;
s22: acquiring the number of each type of ink drop printed by adopting the precision of the spray head;
s23: and calculating to obtain a second printing ink quantity according to the volume of each type of ink drop and the quantity of each type of ink drop.
4. The printing method of eliminating color difference of a head according to any one of claims 1 to 3, wherein the S4: determining the stepping distance of the nozzle after one-time scanning printing according to the position information and the ink quantity difference value between the first printing ink quantity and the second printing ink quantity, and comprising the following steps of:
s41: acquiring an ink amount difference Vd between a second printing ink amount and a first printing ink amount;
s42: calculating an initial stepping distance according to a formula D1= 1/(Vd/Vr + 1) × L1, wherein L1 is the length of the nozzle, D1 is the initial stepping distance, and Vr is a second printing ink amount;
s43: determining the length L2 of the ink jet color uniform part in the spray head according to the position information of the nozzles of the ink jet color uniform part;
s44: comparing the initial stepping distance D1 with the length L2 of the ink-jet color uniform part in the spray head;
s45: and determining the stepping distance of the spray head after one-time scanning printing according to the comparison result.
5. The printing method for eliminating the chromatic aberration of the nozzle as claimed in claim 4, wherein: and S45: the step distance after the nozzle is scanned and printed for one time is determined according to the comparison result, which comprises the following steps:
s451: if the initial stepping distance D1 is smaller than or equal to the length L2 of the ink-jet color uniform part in the spray head, taking the initial stepping distance D1 as the stepping distance of the spray head after one-time scanning and printing;
s452: if the initial stepping distance D1 is larger than the length L2 of the ink jet color uniform part in the nozzle, the length L2 of the ink jet color uniform part in the nozzle is used as the stepping distance of the nozzle after one-time scanning printing.
6. The method for eliminating color variations of a nozzle according to claim 5, wherein if the initial step distance D1 is less than or equal to the length L2 of the uniform portion of the ink jet color in the nozzle, the step S5 comprises the steps of:
s51: selecting at least one part of nozzles from the nozzles with uniform ink jet colors as a first group of nozzles and the rest nozzles of the spray head as a second group of nozzles according to the stepping distance and the position information;
s52: controlling the first group of nozzles to print according to the precision of the spray head;
s53: acquiring printing data printed by a first group of nozzles as first printing data;
s54: and controlling the second group of nozzles to repeatedly print according to the first printing data.
7. The method according to claim 5, wherein the ink droplets ejected by the printing device include a first ink droplet, a second ink droplet and a third ink droplet, wherein the first ink droplet has a volume larger than that of the second ink droplet, the second ink droplet has a volume larger than that of the third ink droplet, and if the initial step distance D1 is less than or equal to the length L2 of the uniform portion of the ink ejection color in the ejection head, the step S5 includes the steps of:
s501: selecting at least one part of nozzles from the nozzles of the uniform ink jet color part as a first group of nozzles and the rest of nozzles of the spray head as a second group of nozzles according to the stepping distance and the position information;
s502: controlling the first group of nozzles to print according to the precision of the spray head;
s503: acquiring printing data printed by a first group of nozzles as first printing data;
s504: adjusting the data of ink output by adopting the third ink drop in the first printing data into the data of ink output failure to obtain first intermediate printing data;
s505: acquiring an ink amount of printing by the second group of nozzles using the first intermediate print data as a third print ink amount;
s506: comparing the third printing ink amount with the ink amount difference value;
s507: obtaining second printing data according to the comparison results of the first intermediate printing data, the third printing ink amount and the ink amount difference value;
s508: and controlling the second group of nozzles to print according to the second printing data.
8. The printing method for eliminating color difference of the nozzle according to claim 5, wherein: the ink drops ejected by the printing device comprise a first ink drop, a second ink drop and a third ink drop, wherein the volume of the first ink drop is larger than that of the second ink drop, and the volume of the second ink drop is larger than that of the third ink drop; if the initial stepping distance D1 is larger than the length L2 of the uniform part of the ink jet color in the spray head, the step S5 comprises the following steps:
s510: selecting nozzles of the uniform ink jet color part as a third group of nozzles according to the position information, and using the rest nozzles of the spray head as the rest nozzles as four groups of nozzles;
s520: controlling the third group of nozzles to print according to the precision of the spray head;
s530: acquiring printing data printed by a third group of nozzles as third printing data;
s540: adjusting the third ink drop ink output data in the third printing data into ink non-output data to obtain second intermediate printing data;
s550: acquiring an ink amount of printing by the second group of nozzles using the second intermediate print data as a fourth print ink amount;
s560: comparing the fourth printing ink amount with the ink amount difference;
s570: obtaining third printing data according to the second intermediate printing data and the comparison result of the fourth printing ink amount and the ink amount difference value;
s580: and controlling the fourth group of nozzles to print according to the third printing data.
9. Printing device of elimination shower nozzle colour difference, its characterized in that includes:
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 second printing ink quantity acquisition module is used for acquiring the ink quantity required by printing the image to be printed by adopting the nozzle precision as a second printing ink quantity;
the position information acquisition module is used for acquiring the position information of nozzles of a part with uniform ink jet color in the spray head;
the step distance obtaining module is used for determining the step distance of the spray head after one-time scanning printing according to the position information and the ink quantity difference value of the first printing ink quantity and the second printing ink quantity;
and the control module is used for controlling at least one part of nozzles with uniform ink jet colors in the nozzles to print according to the precision of the nozzles according to the stepping distance and the position information, and the rest of nozzles print according to the dot matrix positions printed by adopting the precision of the nozzles.
10. Printing apparatus for eliminating color difference of a nozzle, 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 1-8.
11. A storage medium having computer program instructions stored thereon, which when executed by a processor implement the method of any one of claims 1-8.
CN202110638055.5A 2021-06-08 2021-06-08 Printing method, device, equipment and storage medium for eliminating nozzle chromatic aberration Active CN115447284B (en)

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