CN115635769A

CN115635769A - Method, device and equipment for splicing and calibrating multiple rows of nozzles and storage medium

Info

Publication number: CN115635769A
Application number: CN202110819932.9A
Authority: CN
Inventors: 何伟; 陈艳; 黄中琨
Original assignee: Senda Shenzhen Technology Co Ltd
Current assignee: Senda Shenzhen Technology Co Ltd
Priority date: 2021-07-20
Filing date: 2021-07-20
Publication date: 2023-01-24

Abstract

The invention belongs to the technical field of printing equipment, solves the technical problems of high judgment difficulty and low accuracy in the prior art of calibrating a spliced spray head, and provides a method, a device, equipment and a storage medium for splicing and calibrating multiple rows of nozzles. Grouping nozzles in each row of a nozzle to obtain a plurality of nozzle groups, dividing a test chart into a plurality of image areas according to the number of the nozzle groups, and respectively setting different image data for each image area according to the mutual position relation of each image area so as to obtain the test image data corresponding to the complete test chart; the test chart corresponding to the test image data obtained by the method can be compared in different areas, the offset effect of the offset of the splicing positions of the nozzles in different rows is enhanced, and then the positions of the nozzles in each row are calibrated, so that the nozzle mounting efficiency is improved.

Description

Method, device and equipment for splicing and calibrating multiple rows of nozzles and storage medium

Technical Field

The invention relates to the field of printing equipment, in particular to a method, a device, equipment and a storage medium for splicing and calibrating multiple rows of nozzles.

Background

The ink jet printing technology is that the printer forms images or characters by controlling the movement of a nozzle, and the nozzle of the nozzle performs ink jet printing on a printing medium in the process of moving along with the nozzle.

When two or more rows of nozzles exist in one nozzle, the nozzles in the same position in two adjacent rows of nozzles are arranged in parallel or in a staggered manner, and the nozzles in the rows of the nozzles are manually spliced and installed, so that the installation position needs to be calibrated, the condition that the quality of a printed image is influenced by image overlapping or deviation of the nozzles in different rows at the splicing position during printing is prevented, the conventional calibration method is to control all the nozzles of the nozzle to print straight lines corresponding to the nozzles on a printing medium, and scan and analyze a test chart consisting of the straight lines to judge whether the splicing of the nozzles in the rows of the nozzles meets the printing requirement, and the method has the problems of high judgment difficulty and low accuracy.

Disclosure of Invention

In view of this, embodiments of the present invention provide a method, an apparatus, a device, and a storage medium for multi-row nozzle splicing calibration, so as to solve the technical problems of high judgment difficulty and low accuracy in the existing calibration of spliced nozzles.

The technical scheme adopted by the invention is as follows:

the invention provides a method for splicing and calibrating a plurality of rows of nozzles, which comprises the following steps:

grouping the nozzles in each row of the spray head to obtain a plurality of nozzle groups;

correspondingly setting a plurality of image areas according to the number of the nozzle groups;

according to the mutual position relation of the image areas, corresponding image data are respectively configured for the image areas to obtain test image data of a test chart;

testing and printing are carried out according to the test image data, the offset calibration parameters of all spliced rows of nozzles are output, and the positions of all rows of nozzles are calibrated;

wherein the image data of each image area is different.

Preferably, the grouping of the rows of nozzles of the nozzle head to obtain a plurality of nozzle groups includes:

acquiring the nozzle row number of the sprayer and the grouping rule of each row of nozzles of the sprayer;

obtaining each nozzle group according to the grouping rule and the number of the nozzle columns;

wherein the grouping rules include at least one of: grouping according to the preset interval column number and grouping according to the nozzle column number.

Preferably, each of the nozzle groups includes: at least one row of nozzles or at least two rows of nozzles spaced apart by a predetermined number of rows.

Preferably, the step of configuring corresponding image data for each of the image regions according to the mutual position relationship of each of the image regions, and obtaining the test image data of the test chart includes:

configuring corresponding image data for each nozzle group, combining the image data configured for each nozzle group according to the sequencing serial number of each nozzle group, and outputting a plurality of groups of image data corresponding to each image area;

according to the mutual position relation of the image areas, corresponding the image data to the image areas one by one, and outputting the test image data of the test chart;

wherein, the image data of at most one nozzle in all the nozzles at the same position along the length direction of the nozzle in each row is the ink output data.

Preferably, the configuring the image data corresponding to each nozzle group, and combining the image data configured for each nozzle group according to the sort number of each nozzle group, and outputting a plurality of sets of image data corresponding to each image area includes:

sequencing the nozzle groups to obtain sequencing serial numbers of the nozzle groups;

and circularly arranging the image data of each nozzle group according to the sequence number to obtain and output a plurality of groups of image data corresponding to each image area.

Preferably, the nozzle includes a first row of nozzles and a second row of nozzles, and the cyclically arranging the image data of each nozzle group according to the sorting number to obtain and output a plurality of sets of image data corresponding to each image area includes:

segmenting the first image region and/or the second image region into a plurality of image sub-regions;

in the first image region, an image sub-region includes first row data corresponding to one row of data in image data of a first column of nozzles and second row data corresponding to one row of data in image data of a second column of nozzles;

in the second image region, the image sub-region includes second row data corresponding to one row of data in the image data of the first column of nozzles and first row data corresponding to one row of data in the image data of the second column of nozzles;

respectively obtaining image data of a first image area and image data of a second image area according to the image data of the first row of nozzles and the image data of the second row of nozzles;

the first line data and the second line data are image data containing ink output data, any ink output data of the first line data is only adjacent to an ink output position corresponding to one ink output data of the second line data, and any ink output data of the second line data is only adjacent to an ink output position corresponding to one ink output data of the first line data.

Preferably, after the step of setting image data for each of the image regions according to the mutual position relationship of each of the image regions to obtain test image data of a test chart, the method further includes:

controlling a spray head to perform ink jet test printing according to the test image data to form an actual test chart;

analyzing the actual test chart, determining the calibration parameters of each row of nozzles of the sprayer, and calibrating;

and repeating the two steps until the actual test chart meets the printing requirement.

The invention also provides a device for splicing and calibrating the multiple rows of nozzles, which comprises:

a nozzle grouping module: the nozzle groups are used for grouping the rows of nozzles of the spray head to obtain a plurality of nozzle groups;

an image partitioning module: a plurality of image areas are correspondingly arranged according to the number of the nozzle groups;

an image data module: the image data processing device is used for respectively configuring corresponding image data for each image area according to the mutual position relation of each image area to obtain test image data of a test chart;

a position calibration module: the calibration device is used for carrying out test printing according to the test image data, outputting calibration parameters of deviation of spliced rows of nozzles and calibrating the positions of the rows of nozzles;

wherein the image data of each image area is different.

The present invention also provides a printing apparatus 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 the above.

The present invention also provides a storage medium having stored thereon computer program instructions which, when executed by a processor, implement the method of any one of the above.

In conclusion, the beneficial effects of the invention are as follows:

the invention provides a method, a device, equipment and a storage medium for splicing and calibrating a plurality of rows of nozzles, wherein the method comprises the steps of grouping the rows of nozzles of a nozzle head in a row manner to obtain a plurality of nozzle groups, dividing a test chart into a plurality of image areas according to the number of the nozzle groups, and respectively setting different image data for each image area according to the mutual position relationship of each image area so as to obtain the test image data corresponding to a complete test chart; the test chart corresponding to the test image data obtained by the method can be compared in different areas to strengthen the offset effect of the splicing position offset of nozzles in different rows, so that the offset direction and the offset can be quickly and accurately determined, and then the positions of the nozzles in each row are calibrated.

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 structural view of a showerhead including a plurality of rows of spliced nozzles according to embodiment 1 of the present invention;

FIG. 2 is a schematic flow chart of a multi-row nozzle splicing calibration method in embodiment 1 of the present invention;

FIG. 3 is a schematic diagram of a test including calibration of a plurality of nozzle sets in example 1 of the present invention;

FIG. 4 is a schematic view showing a flow chart for grouping a plurality of rows of nozzles in example 1 of the present invention;

FIG. 5 is a schematic view of a process for acquiring test image data according to embodiment 1 of the present invention;

fig. 6 is a schematic flow chart of acquiring image data of each image area in embodiment 1 of the present invention;

fig. 7 is a schematic flowchart of acquiring test image data corresponding to two image areas in embodiment 1 of the present invention;

FIG. 8 is a schematic flow chart illustrating a process for calibrating a showerhead in embodiment 1 of the present invention;

FIG. 9 is a schematic diagram showing the test of example 1 of the present invention including two rows of nozzles;

FIG. 10 is a schematic diagram of a test of the positive shift of two rows of nozzles in the Y-axis direction during the splicing process in example 1 of the present invention;

FIG. 11 is a schematic diagram of a test of the negative Y-axis offset of two rows of nozzles during the splicing process in example 1 of the present invention;

FIG. 12 is a schematic structural diagram of an apparatus for multi-row nozzle splicing calibration in example 2 of the present invention;

fig. 13 is a schematic configuration diagram of a printing apparatus in embodiment 3 of the present invention.

The drawings of fig. 1 to 8 illustrate:

1. a test chart; 101. a first image area; 102. a second image region; 2. a spray head; 201. a first row of nozzles; 202. the second row of nozzles.

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 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 various features of the present invention and embodiments may be combined with each other and are within the scope of the present invention.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a showerhead, where fig. 1 (a) shows that the showerhead 1 includes a plurality of rows of nozzles, fig. 1 (b) and (c) show two different splicing manners corresponding to two rows of nozzles, respectively, fig. 1 (b) shows that the projections of the co-located nozzles of the first row of nozzles 201 and the second row of nozzles 202 in the Y-axis direction are not overlapped, and fig. 1 (c) shows that the projections of the co-located nozzles of the first row of nozzles 201 and the second row of nozzles 202 in the Y-axis direction are overlapped.

For the convenience of the discussion herein, the following explanation is made,

a co-located nozzle: respectively projecting nozzles in different rows in the length direction (Y-axis direction in FIG. 1) of the nozzle rows, respectively sorting the projection positions of all the nozzles in each row according to the nozzle rows, and recording the nozzles with the same sequence number in the nozzles in different rows as nozzles with the same position;

example 1:

referring to fig. 2, fig. 2 is a flow chart of a testing method for multi-row nozzle calibration, the method includes:

s1: grouping the nozzles in each row of the spray head to obtain a plurality of nozzle groups;

in an embodiment, referring to fig. 4, the S1 includes:

s11: acquiring the nozzle row number of the sprayer and the grouping rule of each row of nozzles of the sprayer;

s12: obtaining each nozzle group according to the grouping rule and the number of the nozzle columns;

Specifically, each row of nozzles to be spliced is numbered, and then the nozzles are grouped according to the number of the rows of nozzles or the preset interval number; the number of nozzle rows is grouped as: each row of nozzles corresponds to one group, namely the number of the nozzle groups is equal to the number of the nozzle rows; grouping according to the number of the nozzle rows, if three rows of nozzles are included, obtaining three groups of nozzles; grouping according to the preset interval column number as follows: classifying all the nozzle rows according to the preset interval row number, wherein each type is a group of nozzles; referring to fig. 3, N rows of nozzles are divided into N +1 groups at predetermined intervals, in a first image region, first row data is image data corresponding to nozzles of the 1 st, N +1 th, 8230, and k (N + 1) th columns, second row data is image data corresponding to nozzles of the 2 nd, N +2 nd, 8230, and k (N + 1) +1 th columns, \8230, N +1 th row data is image data corresponding to nozzles of the N +1 th, 2n +1 th, and 8230, and image data corresponding to nozzles of the k (N + 1) + N columns, in a second image region, the data of the first line is not printed, the data of the first line is added to the (N + 2) th line for printing, namely the (N + 2) th line is the image data corresponding to the nozzles of the (1) th column, the (N + 1) th column, \ 8230, the (k + 1) th column, and so on, in the Q-th image area, the data of the first line to the Q-1 th line are not printed, and the Q-1 line is added to the (N + 2) th line to the (N + Q + 1) th line for printing the data of the first line to the Q-1 th line, wherein Q, k and N are positive integers. When N is equal to 1, the nozzle groups are divided into odd groups and even groups according to parity, when N =2, the nozzle groups are divided into a first group, a second group, a third group, and so on, and the nozzle groups are divided into a first group, a second group, a third group, \ 8230, an Nth group and an N +1 th group according to N columns of nozzles at intervals; if 10 rows of nozzles are included and the preset spacing row number is 2 rows, the 1 st row, the 4 th row, the 7 th row and the 10 th row of nozzles form a group of nozzles, the 2 nd row, the 5 th row and the 7 th row of nozzles form a group of nozzles, and the 3 rd row, the 6 th row and the 9 th row of nozzles form a group of nozzles, which totals 3 groups of nozzles.

It should be noted that: the grouping rule is not limited to the above two methods, and may be to limit the number of nozzle rows in each group, and the grouping method is not particularly limited here.

It should be noted that: the number of lines corresponding to each image area may be a whole number, or may be an area number for a line in which ink discharge data exists and which is adjacent to each other; as shown in fig. 9, when the overall numbering is performed: then the ink data exists at the 1 st, 4 th, 5 th, 8 th, 9 th, 12 th and 13 th areas of the first image area and the ink data exists at the 1 st, 2 th, 5 th, 6 th, 9 th and 10 th areas of the second image area; when the partial number is given, the number of the ink discharge data lines having the entire numbers 4, 8, and 12 can be expressed as the 1 st line, the number of the ink discharge data lines having the entire numbers 1, 5, 9, and 13 can be expressed as the 2 nd line, the number of the ink discharge data lines having the entire numbers 1, 5, and 9 can be expressed as the 1 st line, and the number of the ink discharge data lines having the

entire numbers

2, 6, and 10 can be expressed as the 2 nd line in the second image region.

In one embodiment, each of the nozzle groups includes: at least one row of nozzles or at least two rows of nozzles spaced apart by a predetermined number of rows.

S2: correspondingly setting a plurality of image areas according to the number of the nozzle groups;

specifically, all rows of nozzles of the nozzle are divided into a plurality of groups, each row of nozzles serves as a unit, the test chart 1 is divided into a plurality of areas according to the number of groups of the nozzle groups, and if the test chart is divided into two groups of nozzles (odd groups and even groups) according to the odd-even attribute of each row of nozzles, the test chart is divided into a first image area 101 and a second image area 102; if the nozzles are grouped at intervals of 2 rows to obtain three groups of nozzles, the test chart is divided into a first image area, a second image area and a third image area, and the grouping mode of the nozzle groups is not specifically limited here.

It should be noted that: each row of nozzles has image data in any image area, and the image data comprises ink discharge data and ink non-discharge data; the ink discharging data is that the ink jet position corresponding to the image data is required to jet ink by the nozzle, and the ink non-discharging data is that the ink jet position corresponding to the image data is not required to jet ink by the nozzle.

S3: according to the mutual position relation of the image areas, corresponding image data are respectively configured for the image areas to obtain test image data of a test chart;

specifically, the test chart 1 is divided into a plurality of image areas, and different image data is set for each image area, so that test image data of the test chart is obtained; controlling the same nozzle to perform ink jet printing according to the data of the test image, scanning the test chart, analyzing the actual test chart and the theoretical test chart, and determining whether the nozzles in each row have offset; because the image data of each image area is different, when the spliced rows of nozzles have offset, the characteristics of the image offset of each image area are different, and therefore the characteristics of the image offset of each image area are analyzed, and the offset direction among the rows of nozzles is determined.

In an embodiment, referring to fig. 5, the S3 includes:

s31: configuring corresponding image data for each nozzle group, combining the image data configured for each nozzle group according to the sequencing serial number of each nozzle group, and outputting a plurality of groups of image data corresponding to each image area;

specifically, different image data are respectively set according to the number of the nozzle groups, and the image data of each nozzle group are combined in different image areas according to a certain rule, so that the image data of each image area is obtained; for example, the image data printed by the first group of nozzles is set to have a first color, the image data printed by the second group of nozzles is set to have a second color, the positions of the ink discharge data corresponding to the first group of nozzles in the first image region 101 and the second image region 102 are different from the positions of the ink discharge data corresponding to the second group of nozzles, and the ink ejection positions of the first image region 101 and the second image region 102 for the first group of nozzles and the second group of nozzles are in reverse order. In the first image area 101, when the first group of nozzles discharge ink in the first line, the second group of nozzles discharge ink in other lines after the first line, such as the second line; when the second group of nozzles is discharging ink in the first line in the second image area 102, the first group of nozzles is discharging ink in other lines after the first line, such as the second line; referring to FIG. 9, "\9679", data for the first row of nozzles, noted as color one; ". O" indicates data for the second row of nozzles, noted as color two; in the first image area, the first line data is image data corresponding to color one, the second line data is image data corresponding to color two, in the second image area, the first line data is image data corresponding to color two, and the second line data is image data corresponding to color one, as shown in fig. 9, the preceding data line may be used as the first line data, the following data line is used as the second line data, and the first line and the second line may be adjacent or not; the first line data and the second line data may be all ink discharge data or may be partially ink discharge data.

In one embodiment, referring to fig. 6, S31 includes:

s311: sequencing the nozzle groups to obtain sequencing serial numbers of the nozzle groups;

specifically, the nozzle groups are marked by sequence numbers, and if the nozzle groups comprise N nozzle groups, the nozzle groups are marked as a 1 st group, a 2 nd group, 8230, and an Nth group, wherein N is a positive integer greater than or equal to 2.

S312: and circularly arranging the image data of each nozzle group according to the sequencing serial number to obtain and output a plurality of groups of image data corresponding to each image area.

Specifically, image data corresponding to each nozzle group is cyclically arranged according to the serial number of the nozzle group, so that a plurality of image data corresponding to the number of nozzle groups is formed, for example, 4 nozzle groups are included, the first nozzle group corresponds to the first image data, and is denoted by (1), the second image data corresponding to the second nozzle group, is denoted by (2), the third image data corresponding to the third nozzle group, is denoted by (3), and the fourth image data corresponding to the fourth nozzle group is denoted by (4), after cyclic arrangement, four groups of image data formed in the printing order are obtained, namely, image data formed by (1), (2), (3), (4), (1), (2), and (4), and image data formed by (1), (2), (3), and image data formed by the four groups of image data correspond to 4 image areas, that is, image data corresponding to each group of nozzles are different in the order in the four image areas.

In an embodiment, referring to fig. 7, the nozzle includes a first row of nozzles and a second row of nozzles, and the S312 includes:

s3121: segmenting the first image region and/or the second image region into a plurality of image sub-regions;

specifically, the nozzle comprises a first row of nozzles and a spliced second row of nozzles, the test chart 1 comprises a first image area 101 and a second image area 102, wherein the first image area 101 and/or the second image area 102 comprises a plurality of image sub-areas, each image sub-area at least comprises a row of first row data and a row of second row data, the first row data is that ink outlet data exists in the row, and the second row data is that ink outlet data also exists in the row; the first line data and the second line data may be image data corresponding to the first group of nozzles, or may be image data corresponding to the second group of nozzles, and the first line precedes the second line in the positive direction along the Y axis (Y-axis arrow direction).

S3122: in the first image region, the image sub-region includes first row data corresponding to one row of the image data of the first column of nozzles and second row data corresponding to one row of the image data of the second column of nozzles;

specifically, in the first image area 101, the first line data is image data corresponding to a first group of nozzles, and the second line data is image data corresponding to a second group of nozzles.

S3123: in the second image region, the image sub-region includes second row data corresponding to one row of data in the image data of the first column of nozzles and first row data corresponding to one row of data in the image data of the second column of nozzles;

specifically, in the second image area 102, the first line data is image data corresponding to the second group of nozzles, and the second line data is image data corresponding to the first group of nozzles.

S2134: respectively obtaining image data of a first image area and image data of a second image area according to the image data of the first row of nozzles and the image data of the second row of nozzles;

Specifically, by setting the image data of the first line data and the image data of the second line data in the first image area 101 and the second image area 102 in opposite directions, it is ensured that the test chart obtained in the first image area and the second image area has a strong contrast effect, and any ink discharge data of the first line data is adjacent to only the ink discharge position corresponding to one ink discharge data of the second line data, and at the same time, any ink discharge data of the second line data is adjacent to only the ink discharge position corresponding to one ink discharge data of the first line data, it can be understood that: performing gridding processing on the test chart, representing the test chart by using odd-even positions, and if the image data corresponding to the pixel point of the 3 rd column and the 3 rd row of the 3 rd column is ink outlet data, if the image data corresponding to the pixel point of the 2 nd row and the 3 rd column is ink outlet data, then the image data corresponding to the pixel point of the 4 th row and the 3 rd column is ink outlet data; when the image data corresponding to the pixel point in the 3 rd row and the 6 th row is ink output data, if the image data corresponding to the pixel point in the 5 th row and the 3 rd row is ink output data, the image data corresponding to the pixel point in the 7 th row and the 3 rd row is ink output data; the ink discharge information of the image data of the pixel points at the other positions is not particularly limited.

S32: according to the mutual positions of the image areas, corresponding the image data to the image areas one by one, and outputting test image data of the test chart;

Specifically, the longitudinal direction of the head is the Y direction shown in fig. 1, assuming that there are 10 rows of nozzles, each row of nozzles has 10 nozzles, and if the first nozzle of the first row of nozzles discharges ink, the first nozzles of all the remaining nozzle rows do not discharge ink.

S4, performing test printing according to the test image data, outputting the offset calibration parameters of the spliced nozzles in each row, and calibrating the positions of the nozzles in each row;

wherein the image data of each image area is different.

In an embodiment, referring to fig. 8, the S4 includes:

s5: controlling a spray head to perform ink jet test printing according to the test image data to form an actual test chart;

s6: analyzing the actual test chart, determining the calibration parameters of each row of nozzles of the sprayer, and calibrating;

specifically, the analysis of the actual test chart includes scanning the actual test chart with a CCD camera, analyzing the image of the test chart with a computer, and determining whether the imaging result of each row of nozzles in each image area meets the requirements, for example, dividing the nozzles into odd groups and even groups, where the test chart includes a first image area 101 and a second image area 102, where in the first image area 101, the image corresponding to the odd groups is above the even groups, and in the second image area 102, the image corresponding to the odd groups is below the even groups, and if the images formed by the odd groups and the even groups in the first image area 101 are separated, and the images formed by the odd groups and the even groups in the second image area 102 are close, the nozzles in the even groups are shifted in the negative direction of the Y axis, or the nozzles in the odd groups are shifted in the positive direction of the Y axis; conversely, the even groups of nozzles are offset in the positive direction of the Y-axis, or the odd groups of nozzles are offset in the negative direction of the Y-axis. That is, if the nozzles of the K-th group are shifted in the positive direction of the Y-axis, the distance between the test image corresponding to the nozzles of the K-th group and the test image corresponding to the nozzles of the K-1-th group is shortened, and the distance between the test image corresponding to the nozzles of the K-th group and the test image corresponding to the nozzles of the K + 1-th group is increased; if the nozzle of the K group is shifted along the negative direction of the Y axis, the distance between the test image corresponding to the nozzle of the K group and the test image corresponding to the nozzle of the K-1 group is increased, and the distance between the test image corresponding to the nozzle of the K group and the test image corresponding to the nozzle of the K +1 group is shortened, wherein K belongs to N, and N is the number of groups formed by grouping the rows of nozzles of the sprayer. Referring to fig. 10, fig. 10 shows a head including a first row of nozzles and a second row of nozzles, where in a first image region, a distance between an image region corresponding to the first row of nozzles and an image region corresponding to the second row of nozzles increases, and in a second image region, a distance between an image region corresponding to the first row of nozzles and an image region corresponding to the second row of nozzles decreases (images overlap), so that a splicing position of the second row of nozzles and the first row of nozzles is shifted toward a negative direction of the Y-axis compared with a standard position. Referring to fig. 11, fig. 11 shows a head including a first row of nozzles and a second row of nozzles, where in a first image region, the distance between an image region corresponding to the first row of nozzles and an image region corresponding to the second row of nozzles is shortened (images are overlapped), and in a second image region, the distance between an image region corresponding to the first row of nozzles and an image region corresponding to the second row of nozzles is increased, so that the positions of the second row of nozzles and the first row of nozzles are shifted in the positive direction of the Y axis compared to the standard position.

S7: and repeating the steps from S4 to S6 until the actual test chart meets the printing requirement.

The method for splicing and calibrating the multiple rows of nozzles in the embodiment 1 is adopted, and comprises the steps of grouping the nozzles in each row of the nozzle to obtain a plurality of nozzle groups, dividing the test chart into a plurality of image areas according to the number of the nozzle groups, and respectively setting different image data for each image area according to the mutual position relation of each image area, so as to obtain the test image data corresponding to the complete test chart; the test chart corresponding to the test image data obtained by the method can be compared in different areas, and the offset effect of the offset of the splicing positions of the nozzles in different rows is enhanced, so that the offset direction and the offset can be quickly and accurately determined.

Example 2

The invention also provides a device for splicing and calibrating a plurality of rows of nozzles, as shown in fig. 12, comprising:

a nozzle grouping module: a plurality of image areas are correspondingly arranged according to the number of the nozzle groups;

wherein the image data of each image area is different.

The device for splicing and calibrating the multiple rows of nozzles in the embodiment is adopted, the method comprises the steps of grouping the nozzles in each row of the nozzle to obtain a plurality of nozzle groups, dividing the test chart into a plurality of image areas according to the number of the nozzle groups, and respectively setting different image data for each image area according to the mutual position relation of each image area, so that the test image data corresponding to the complete test chart is obtained; the test chart corresponding to the test image data obtained by the method can be compared in different areas, and the offset effect of the offset of the splicing positions of the nozzles in different rows is enhanced, so that the offset direction and the offset can be quickly and accurately determined.

In one embodiment, the nozzle grouping module includes:

a grouping rule acquisition unit: acquiring the nozzle row number of the spray head and the grouping rule of each row of nozzles of the spray head;

a nozzle grouping unit: obtaining each nozzle group according to the grouping rule and the nozzle row number;

In one embodiment, the image data module comprises:

an image data allocation unit: configuring corresponding image data for each nozzle group, combining the image data configured for each nozzle group according to the sequencing serial number of each nozzle group, and outputting a plurality of groups of image data corresponding to each image area;

an image data combining unit: according to the mutual position relation of the image areas, corresponding the image data to the image areas one by one, and outputting the test image data of the test chart;

In one embodiment, the image data distribution unit includes:

a nozzle group sorting unit: sequencing the nozzle groups to obtain sequencing serial numbers of the nozzle groups;

circular combined data unit: and circularly arranging the image data of each nozzle group according to the sequencing serial number to obtain and output a plurality of groups of image data corresponding to each image area.

In one embodiment, the showerhead includes a first column of nozzles and a second column of nozzles, the cycle composition data unit includes:

an image area unit: segmenting the first image region and/or the second image region into a plurality of image sub-regions;

a first area unit: in the first image region, the image sub-region includes first row data corresponding to one row of the image data of the first column of nozzles and second row data corresponding to one row of the image data of the second column of nozzles;

a second area unit: in the second image region, the image sub-region includes second row data corresponding to one row of data in the image data of the first column of nozzles and first row data corresponding to one row of data in the image data of the second column of nozzles;

a test data unit: respectively obtaining image data of a first image area and image data of a second image area according to the image data of the first row of nozzles and the image data of the second row of nozzles;

In an embodiment, after the setting image data for each of the image regions according to the mutual position relationship of each of the image regions, and obtaining the test image data of the test chart, the method further includes:

a test unit: controlling a spray head to perform ink jet test printing according to the test image data to form an actual test chart;

a data analysis unit: analyzing the actual test chart, determining the calibration parameters of each row of nozzles of the sprayer, and calibrating;

repeating the test unit: and repeating the two steps until the actual test chart meets the printing requirement.

The method comprises the steps of grouping nozzles in rows of a sprayer to obtain a plurality of nozzle groups, dividing a test chart into a plurality of image areas according to the number of the nozzle groups, and respectively setting different image data for each image area according to the mutual position relation of each image area so as to obtain the test image data corresponding to a complete test chart; the test chart corresponding to the test image data obtained by the method can be compared in different areas to strengthen the offset effect of the splicing position offset of nozzles in different rows, so that the offset direction and the offset can be quickly and accurately determined, then the positions of the nozzles in each row are calibrated, and the calibration efficiency is improved.

Example 3

Embodiment 3 of the present invention discloses a printing apparatus, as shown in fig. 13, comprising at least one processor, at least one memory, and computer program instructions stored in the memory.

In particular, the processor may include a Central Processing Unit (CPU), or an Application Specific Integrated Circuit (ASIC), or one or more Integrated circuits that may be configured to implement embodiments of the present invention.

The memory may include mass storage for data or instructions. By way of example, and not limitation, memory may include a Hard Disk Drive (HDD), floppy Disk Drive, flash memory, optical Disk, magneto-optical Disk, magnetic tape, or Universal Serial Bus (USB) Drive or a combination of two or more of these. The memory may include removable or non-removable (or fixed) media, where appropriate. The memory may be internal or external to the data processing apparatus, where appropriate. In a particular embodiment, the memory is non-volatile solid-state memory. In a particular embodiment, the memory 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 Alterable ROM (EAROM), or flash memory, or a combination of two or more of these.

The processor reads and executes the computer program instructions stored in the memory to implement the method for multi-column nozzle stitching calibration as described in embodiment 1 above.

In one example, the printing device may also include a communication interface and a bus. The processor, the memory and the communication interface are connected through a bus and complete mutual communication.

The communication interface is mainly used for realizing communication among modules, devices, units and/or equipment in the embodiment of the invention.

The bus includes hardware, software, or both that couple the components of the printing device to one another. 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. A bus 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.

In summary, the method, apparatus, device and storage medium for multi-row nozzle stitching calibration according to the embodiments of the present invention include grouping nozzles in rows of a nozzle to obtain a plurality of nozzle groups, dividing a test chart into a plurality of image areas according to the number of the nozzle groups, and setting different image data for each image area according to the mutual position relationship of each image area, so as to obtain test image data corresponding to a complete test chart; the test chart corresponding to the test image data obtained by the method can be compared in different areas, and the offset effect of the offset of the splicing positions of the nozzles in different rows is enhanced, so that the offset direction and the offset can be quickly and accurately determined.

It is to be understood that the invention is not limited to the precise arrangements and instrumentalities shown. 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.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and these modifications or substitutions do not depart from the spirit of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. A method of multi-row nozzle stitching calibration, the method comprising:

according to the mutual position relation of each image area, corresponding image data is respectively configured for each image area, and test image data of a test chart is obtained;

wherein the image data of each image area is different.

2. The method of multi-column nozzle stitching calibration according to claim 1, wherein grouping the columns of nozzles of the nozzle tip into a plurality of nozzle groups comprises:

acquiring the nozzle row number of the spray head and the grouping rule of each row of nozzles of the spray head;

3. The method of multi-row nozzle stitching calibration according to claim 2, wherein each of the nozzle groups comprises: at least one row of nozzles or at least two rows of nozzles spaced by a predetermined number of rows.

4. The method of multi-column nozzle stitching calibration according to claim 1, wherein the obtaining test image data of the test chart by respectively arranging corresponding image data for each of the image regions according to the mutual position relationship of the image regions comprises:

5. The method of multi-row nozzle stitching calibration according to claim 4, wherein the allocating corresponding image data for each nozzle group, combining the image data allocated for each nozzle group according to the sorting number of each nozzle group, and outputting the sets of image data corresponding to each image area comprises:

and circularly arranging the image data of each nozzle group according to the sequencing serial number to obtain and output a plurality of groups of image data corresponding to each image area.

6. The method for multi-row nozzle stitching calibration according to claim 5, wherein the nozzle head includes a first row of nozzles and a second row of nozzles, and the cyclically arranging the image data of each nozzle group according to the sorting order number to obtain and output a plurality of sets of image data corresponding to each image area includes:

in the first image region, the image sub-region includes first row data corresponding to one row of the image data of the first column of nozzles and second row data corresponding to one row of the image data of the second column of nozzles;

7. The method of multi-column nozzle stitching calibration according to any one of claims 1 to 6, wherein the performing test printing according to the test image data, outputting calibration parameters of the offset of each column of nozzles to be stitched, and performing calibration on each column of nozzles comprises:

analyzing the actual test chart, determining calibration parameters of all rows of nozzles of the sprayer, and calibrating;

8. An apparatus for multi-row nozzle stitching calibration, the apparatus comprising:

a nozzle grouping module: the nozzle groups are used for grouping the nozzles of each row of the spray head to obtain a plurality of nozzle groups;

an image data module: the image processing device is used for configuring corresponding image data for each image area according to the mutual position relation of each image area to obtain test image data of a test chart;

wherein the image data of each image area is different.

9. A printing apparatus, comprising: at least one processor, at least one memory, and computer program instructions stored in the memory, which when executed by the processor, implement the method of any one of claims 1-7.

10. A storage medium having stored thereon computer program instructions which, when executed by a processor, implement the method of any one of claims 1-7.