CN114385094B - Onepass printing abnormal nozzle compensation method, device, equipment and medium - Google Patents
Onepass printing abnormal nozzle compensation method, device, equipment and medium Download PDFInfo
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/12—Digital output to print unit, e.g. line printer, chain printer
- G06F3/1201—Dedicated interfaces to print systems
- G06F3/1202—Dedicated interfaces to print systems specifically adapted to achieve a particular effect
- G06F3/121—Facilitating exception or error detection and recovery, e.g. fault, media or consumables depleted
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J29/00—Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
- B41J29/38—Drives, motors, controls or automatic cut-off devices for the entire printing mechanism
- B41J29/393—Devices for controlling or analysing the entire machine ; Controlling or analysing mechanical parameters involving printing of test patterns
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/12—Digital output to print unit, e.g. line printer, chain printer
- G06F3/1201—Dedicated interfaces to print systems
- G06F3/1202—Dedicated interfaces to print systems specifically adapted to achieve a particular effect
- G06F3/1203—Improving or facilitating administration, e.g. print management
- G06F3/1208—Improving or facilitating administration, e.g. print management resulting in improved quality of the output result, e.g. print layout, colours, workflows, print preview
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- G06F3/1201—Dedicated interfaces to print systems
- G06F3/1223—Dedicated interfaces to print systems specifically adapted to use a particular technique
- G06F3/1229—Printer resources management or printer maintenance, e.g. device status, power levels
- G06F3/1234—Errors handling and recovery, e.g. reprinting
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Abstract
The invention belongs to the technical field of industrial inkjet printing, solves the technical problems of resource waste and cost increase caused by replacement of the whole nozzle when few abnormal nozzles cannot be printed normally in the prior art, and provides a method, a device, equipment and a medium for compensating abnormal nozzles in Onepass printing. The Onepass printing abnormal nozzle compensation method comprises the steps of adjusting the printing position of each ink outlet row of an image to be printed according to the position information of an abnormal nozzle and the image lattice data of the image to be printed, enabling the ink outlet row printed by the abnormal nozzle to be adjusted from a first ink outlet row to a second ink outlet row, adjusting image data corresponding to adjacent nozzles of the abnormal nozzle, and then performing ink jet printing. The invention also includes an apparatus, a device and a medium for performing the above method. The invention can ensure the quality of the printed image when the nozzle with the abnormal nozzle is used for printing, thereby prolonging the service life of the nozzle.
Description
Technical Field
The invention relates to the technical field of industrial inkjet printing, in particular to a method, a device, equipment and a medium for compensating abnormal nozzles in Onepass printing.
Background
Inkjet printing refers to the ejection of ink droplets through orifices in a printhead onto a print medium to produce images or text. The Onepasts ink-jet printing technology is a high-speed printing technology in the current ink-jet printing field, the Onepasts ink-jet printing technology is to connect a plurality of spray heads end to form a spray head group, the spray head group can cover the whole image to be printed, the spray head group forms the image to be printed on a printing medium through one-time scanning, the printing speed is high, the efficiency is high, the spray head group is a spray head installation schematic diagram of Onepasts ink-jet printing, the spray head group comprises n spray heads, and in the printing process, the printing medium moves along the X direction relative to the spray head group Q.
After the inkjet printer nozzle works for a long time, due to reasons such as ink path pollution, ink precipitation, dust and water vapor, the nozzle state is easy to be abnormal, such as blockage, oblique spraying, deficiency, insufficient ink quantity and the like, so that the printed image is caused to have the problems of stay wires, blank and the like, the quality of products is seriously influenced, when the whole nozzle is replaced only because a small part of nozzle state is abnormal and printing cannot be compensated, the production progress is influenced, and simultaneously, the resource waste and the cost increase are caused.
Disclosure of Invention
In view of the above, the embodiments of the present invention provide a method, an apparatus, a device, and a medium for compensating abnormal nozzles for Onepass printing, which are used for solving the technical problems of resource waste and cost increase caused by replacement of the entire nozzle when a few abnormal nozzles cannot print normally in the prior art.
The technical scheme adopted by the invention is as follows:
the invention provides a method for compensating abnormal nozzles in Onepass printing, which comprises the following steps:
s1: acquiring position information of an abnormal nozzle of a spray head and image lattice data of an image to be printed;
s2: according to the position information of the abnormal nozzle and the image lattice data, adjusting the printing position corresponding to each ink outlet line of the image to be printed, so that the ink outlet line printed by the abnormal nozzle is adjusted from a first ink outlet line to a second ink outlet line;
s3: adjusting image data corresponding to adjacent nozzles of the abnormal nozzles to obtain actual image data;
s4: performing ink-jet printing on a printing medium according to the actual image data to form a printing image;
the number of ink outlet points of the first ink outlet row is larger than that of the second ink outlet row.
Preferably, the second ink outlet line is the ink outlet line with the least ink outlet points in the image dot matrix data.
Preferably, the S2 includes:
s21: acquiring ink point position information of each ink outlet point in the image dot matrix data;
s22: obtaining the number of ink outlet points of each ink outlet row in the image dot matrix data according to the ink point position information of each ink outlet point;
s23: according to the number of ink outlet points of each ink outlet row, adjusting the second ink outlet row to a printing position corresponding to the abnormal nozzle;
s24: and sequentially adjusting the printing positions of the other ink outlet rows according to the adjustment mode of the second ink outlet row.
Preferably, the S3 includes:
s31: acquiring image data corresponding to the abnormal nozzle and original image data corresponding to adjacent nozzles of the abnormal nozzle;
s32: and adjusting the original image data corresponding to the adjacent nozzles according to the image data corresponding to the abnormal nozzles and the original image data corresponding to the adjacent nozzles to obtain the actual image data.
Preferably, the S32 includes:
s321: if the ink output represented by the original image data corresponding to the adjacent nozzles is zero, taking the image data corresponding to the abnormal nozzles as the image data corresponding to the adjacent nozzles to obtain the actual image data;
S322: if the ink output represented by the original image data corresponding to the adjacent nozzle is not zero, the ink output of the original image data corresponding to the adjacent nozzle is increased and then used as the image data corresponding to the adjacent nozzle, and the actual image data is obtained.
Preferably, adjacent nozzles of the abnormal nozzle are recorded as compensating nozzles of the abnormal nozzle; the step S4 comprises the following steps: in the printing stroke, the compensating nozzle prints the image data corresponding to the compensating nozzle in the actual image data at the corresponding printing position.
Preferably, the S1 includes:
s101: acquiring position information of each nozzle of the spray head;
s102: detecting ink outlet information of each nozzle through a sensor to obtain detection information of each nozzle;
s103: and obtaining the position information of the abnormal nozzles according to the position information of the nozzles and the nozzle detection information.
The invention also provides a printing device, comprising:
and a data acquisition module: the method comprises the steps of acquiring position information of abnormal nozzles of a spray head and image lattice data of an image to be printed;
and a data processing module: the printing position corresponding to each ink outlet line of the image to be printed is adjusted according to the position information of the abnormal nozzle and the image lattice data, so that the ink outlet line printed by the abnormal nozzle is adjusted from a first ink outlet line to a second ink outlet line;
And a data calibration module: the method comprises the steps of adjusting image data corresponding to adjacent nozzles of the abnormal nozzles to obtain actual image data;
and a data printing module: for performing inkjet printing on a printing medium according to the actual image data to form a printed image;
the number of ink outlet points of the first ink outlet row is larger than that of the second ink outlet row.
The invention also provides Onepass printing equipment, which comprises: 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 of the above.
The invention also provides a medium having stored thereon computer program instructions which when executed by a processor implement a method as claimed in any one of the preceding claims.
In summary, the beneficial effects of the invention are as follows:
the invention provides a method, a device, equipment and a medium for compensating abnormal nozzles in Onepass printing, which are characterized in that position information of abnormal nozzles and image lattice data of an image to be printed are obtained, then printing positions of ink outlet rows of the image to be printed are adjusted, so that the image data printed by the abnormal nozzles are adjusted from a first ink outlet row to image data corresponding to a second ink outlet row, and simultaneously, image data corresponding to adjacent nozzles of the abnormal nozzles are adjusted to obtain actual image data; and then printing according to the actual image data, and changing the printing data of the printing image corresponding to the abnormal nozzles by adjusting the printing position of each ink outlet line of the printing image, and simultaneously printing according to the actual image data, so that the adjacent nozzles of the abnormal nozzles form compensation printing for the printing area corresponding to the abnormal nozzles in the printing process, the quality of the printing image is ensured, and the service life of the spray head is prolonged.
Drawings
In order to more clearly illustrate the technical solution of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described, and it is within the scope of the present invention to obtain other drawings according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a spray head structure for Onepasts printing in the prior art;
FIG. 2 is a schematic flow chart of the method for compensating abnormal nozzle in Onepass printing in embodiment 1 of the present invention;
fig. 3 is a schematic diagram of the structure of image dot matrix data of an image to be printed in embodiment 1 of the present invention;
FIG. 4 is a schematic view showing the structure of the abnormal nozzle position in embodiment 1 of the present invention;
FIG. 5 is a schematic flow chart of determining the printing position of each ink outlet line of an image to be printed in embodiment 1 of the present invention;
FIG. 6 is a flow chart of determining actual image data in embodiment 1 of the present invention;
FIG. 7 is a flow chart of determining image data corresponding to a compensating nozzle in embodiment 1 of the present invention;
FIG. 8 is a flow chart of determining position information of abnormal nozzles in embodiment 1 of the present invention;
fig. 9 is a schematic diagram showing the structure of a printing apparatus according to embodiment 2 of the present invention;
Fig. 10 is a schematic diagram of the structure of Onepass printing apparatus in embodiment 3 of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. In the description of the present invention, it should 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 the orientation or positional relationships shown in the drawings, merely to facilitate description of the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises the element. If not conflicting, the embodiments of the present invention and the features of the embodiments may be combined with each other, which are all within the protection scope of the present invention.
Onepass printing is also called Single Pass printing, is a technology of forming a printing image by performing one-time scanning ink-jet on a printing medium by using ink-jet equipment, and is mainly suitable for small-format rapid printing scenes, such as label printing, logistics printing (two-dimensional code labels), silk ribbon printing, shopping bag printing, textile cut-parts printing, bottle cap printing, commemorative coin printing and the like; the ink jet device scans an area to be printed for 1Pass.
Example 1
Fig. 2 is a flow chart of a method for compensating abnormal nozzle for Onepass printing provided in embodiment 1 of the present invention, as shown in fig. 2, the method includes:
s1: acquiring position information of an abnormal nozzle of a spray head and image lattice data of an image to be printed;
specifically, the position information includes a position of the abnormal nozzle in the head group corresponding to the head and a position of the abnormal nozzle in the corresponding head, such as a y-th nozzle in an x-th head in the head group; the image to be printed adopts a matrix mode to represent the position of each pixel point of the image to be printed, in Onepass printing, each row of data in the image lattice data corresponds to a unique nozzle, as shown in fig. 3, the lattice data comprises 15 columns of data, then 15 continuous nozzles respectively correspond to one column of lattice data, and then printing is completed through one-time scanning; as shown in FIG. 4, J can be used 1 To J 15 A total of 15 consecutive nozzles print the image dot matrix data including 15 columns in fig. 3.
S2: according to the position information of the abnormal nozzle and the image lattice data, adjusting the printing position corresponding to each ink outlet line of the image to be printed, so that the ink outlet line printed by the abnormal nozzle is adjusted from a first ink outlet line to a second ink outlet line;
specifically, according to the position information of the abnormal nozzle, the printing position of each ink outlet line of the image to be printed is adjusted, so that the ink outlet line corresponding to the abnormal nozzle is adjusted from the first ink outlet line to the second ink outlet line. It should be noted that, when the ink outlet line corresponding to the abnormal nozzle is adjusted from the first ink outlet line to the second ink outlet line, the ink outlet lines corresponding to the other nozzles are also adjusted accordingly, so as to maintain the integrity of the image to be printed. For easy understanding, please refer to FIGS. 3 and 4, if J in FIG. 4 is used 1 To J 15 The image dot matrix data including 15 rows in fig. 3 is printed by 15 continuous nozzles, and the image dot matrix data corresponds to each other from left to right, namely A 1 The image data of the line is composed of J 1 Nozzle printing, and so on, J 15 Nozzle printing A 15 Image data of the line; thus, the difference can be obtainedConstant nozzle J 8 Printing A 8 Line image data, at this time J 8 The number of ink points required to be ejected is 17; that is, there are 17 ink discharge anomalies (little or no ink discharge) in this way, by adjusting the printing position corresponding to each ink discharge line of the image to be printed, such that the image is printed by J in FIG. 4 2 To J 16 Or J 3 To J 17 A total of 15 consecutive nozzles to print the image dot matrix data including 15 lines in FIG. 3, thereby causing an abnormal nozzle J 8 Printing A 7 Or A 6 Line image data such that the number of dots of ink abnormality is reduced; it can be understood that the dot matrix data is shifted by one line overall to the left or one line overall to the right, so that the number of ink discharge dots of the ink discharge line to which the abnormal nozzle actually corresponds is reduced.
It should be noted that: the first ink outlet line and the second ink outlet line may be two adjacent lines or two non-adjacent lines.
S3: adjusting image data corresponding to adjacent nozzles of the abnormal nozzles to obtain actual image data;
specifically, adjusting image data corresponding to adjacent nozzles of the abnormal nozzles to obtain actual image data, and adjusting the image data of the image to be printed by adjusting the image data corresponding to the adjacent nozzles; the image data of the adjacent nozzles at the corresponding printing positions are changed, so that the influence of poor effect caused by abnormal ink outlet of the image area corresponding to the abnormal nozzle is weakened.
S4: performing ink-jet printing on a printing medium according to the actual image data to form a printing image;
the number of ink outlet points of the first ink outlet row is larger than that of the second ink outlet row.
It should be noted that: the ink outlet rows in the image lattice data are determined by the arrangement direction of the spray heads, and as shown in fig. 1, the spray heads are arranged along the direction vertical to the X direction, and the ink outlet rows are formed; if the nozzles are arranged in the X direction, the ink outlet line is not particularly limited herein.
According to the Onepass printing abnormal nozzle compensation method provided by the embodiment 1 of the invention, the position information of the abnormal nozzle and the image lattice data of the image to be printed are obtained, then the printing position of each ink outlet row of the image to be printed is adjusted, so that the image data printed by the abnormal nozzle is adjusted from the first ink outlet row to the image data corresponding to the second ink outlet row, and meanwhile, the image data corresponding to the adjacent nozzle of the abnormal nozzle is adjusted, so that the actual image data is obtained; and then printing according to the actual image data, and changing the printing data of the printing image corresponding to the abnormal nozzles by adjusting the printing position of each ink outlet line of the printing image, and simultaneously printing according to the actual image data, so that the adjacent nozzles of the abnormal nozzles form compensation printing for the printing area corresponding to the abnormal nozzles in the printing process, the quality of the printing image is ensured, and the service life of the spray head is prolonged.
In one embodiment:
and the second ink outlet row is the ink outlet row with the least ink outlet points in the image dot matrix data.
Specifically, as shown in FIGS. 3 and 4, J is employed 2 To J 16 A total of 15 consecutive nozzles to print the image dot matrix data including 15 lines in FIG. 3, thereby causing an abnormal nozzle J 8 Printing A 7 Line image data, the number of abnormal ink discharge in the resulting image is minimized, i.e., A 7 The 11 ink outlet points in the row do not normally discharge ink, and other ink outlet rows correspondingly adjust the printing position, which can be understood as an abnormal nozzle J 8 The corresponding printed ink outlet line is formed by A 7 The image data corresponding to the line is changed into printing A after being moved rightwards by one line 8 And (3) moving the other ink outlet rows to the right by one row in the image data corresponding to the rows, so as to obtain new nozzles for printing. The integrity of the image can be ensured, and the quality of the printed image can be ensured.
It should be noted that: the second ink outlet line can be the ink outlet line with the least ink outlet quantity, and can also be the ink outlet line with the most ink outlet points corresponding to the printing requirement; the printing requirement of the ink outlet row is that the number of the ink outlet points cannot be larger than m; the number of ink outlet points of the first ink outlet row is n, and n is greater than m; the second ink outlet line can be formed as long as the number of ink outlet lines is smaller than m.
It should be noted that: if a plurality of second ink outlet rows meeting the requirements exist, selecting according to the overall offset distance of the ink outlet rows of the image lattice data, the number of ink outlet points of each row and the position of the printing platform where the printing medium is placed; if the offset distance is too large, a large area waste exists in the printing medium; in this case, an ink outlet line having a small offset distance and a relatively small number of ink outlet dots is preferentially selected as the second ink outlet line.
In one embodiment:
FIG. 5 is a flow chart of a method for compensating for abnormal nozzles in Onepass printing according to an embodiment of the present invention;
as shown in fig. 5, the S2 includes:
s21: acquiring ink point position information of each ink outlet point in the image dot matrix data;
specifically, after performing image screening processing on an image to be printed, obtaining image lattice data; determining the positions of all the ink outlet points according to the image dot matrix data, wherein the positions of all the ink outlet points in each row in the image dot matrix data are shown in fig. 3; as in A 1 The first column of the row is the ink outlet point, A 2 The third column of rows is the ink outlet dot 15 The fifth column of rows is the ink outlet dot, etc.
S22: obtaining the number of ink outlet points of each ink outlet row in the image dot matrix data according to the ink point position information of each ink outlet point;
Specifically, the number of ink outlet points of each row in the image dot matrix data is obtained by the positions of the ink outlet points, as shown in FIG. 3, A 1 The line has 18 ink outlet points A 2 There are 18 ink outlet dots in a row 7 The row has 11 ink outlet points A 8 There are 17 ink outlet dots in a row 15 There are 20 ink outlet dots in a row.
S23: according to the number of ink outlet points of each ink outlet row, adjusting the second ink outlet row to a printing position corresponding to the abnormal nozzle;
specifically, according to the number of ink outlet points of each ink outlet line, the printing position of a second ink outlet line with the number of ink outlet points smaller than that of the first ink outlet line is adjusted to the printing position corresponding to the abnormal nozzle, and the adjustment mode is that all the ink outlet lines are integrally adjusted.
S24: and sequentially adjusting the printing positions of the other ink outlet rows according to the adjustment mode of the second ink outlet row.
In particular, please refer to fig. 3 and 4, if J in fig. 4 is used 1 To J 15 The image dot matrix data including 15 rows in fig. 3 is printed by 15 continuous nozzles, and the image dot matrix data corresponds to each other from left to right, namely A 1 The image data of the line is composed of J 1 Nozzle printing, and so on, J 15 Nozzle printing A 15 Image data of the line; thus, an abnormal nozzle J can be obtained 8 Printing A 8 Line image data, at this time J 8 The number of ink points required to be ejected is 17; that is, there are 17 ink discharge anomalies (little or no ink discharge) in this way, by adjusting the printing position corresponding to each ink discharge line of the image to be printed, such that the image is printed by J in FIG. 4 2 To J 16 Or J 3 To J 17 A total of 15 consecutive nozzles to print the image dot matrix data including 15 lines in FIG. 3, thereby causing an abnormal nozzle J 8 Printing A 7 Or A 6 Line image data such that the number of dots of ink abnormality is reduced; it can be understood that the dot matrix data is shifted by one line overall to the left or one line overall to the right, so that the number of ink discharge dots of the ink discharge line to which the abnormal nozzle actually corresponds is reduced.
In one embodiment:
FIG. 6 is a flow chart of a method for compensating for abnormal nozzles in Onepass printing according to an embodiment of the present invention;
as shown in fig. 6, the S3 includes:
s31: acquiring image data corresponding to the abnormal nozzle and original image data corresponding to adjacent nozzles of the abnormal nozzle;
specifically, the original image data of the adjacent nozzles includes the number of ink outlet dots of the ink outlet row corresponding to the image data, the positions of the ink outlet dots, the ink outlet amount of each ink outlet dot, and the color information of each pixel dot.
S32: according to the image data corresponding to the abnormal nozzle and the original image data corresponding to the adjacent nozzle, the original image data corresponding to the adjacent nozzle is adjusted to obtain the actual image data;
Specifically, comparing the image data corresponding to the abnormal nozzle with the image data corresponding to the adjacent nozzle, and then adjusting the image data corresponding to the adjacent nozzle to obtain the actual data printed by the adjacent nozzle of the abnormal nozzle, thereby obtaining the actual image data of the image to be printed.
In one embodiment:
FIG. 7 is a flow chart of a method for compensating for abnormal nozzles in Onepass printing according to an embodiment of the present invention;
as shown in fig. 7, the S32 includes:
s321: if the ink output represented by the original image data corresponding to the adjacent nozzles is zero, taking the image data corresponding to the abnormal nozzles as the image data corresponding to the adjacent nozzles to obtain the actual image data;
specifically, if the ink output represented by the original image data is zero, it can be understood that the image data corresponding to the adjacent nozzle of the abnormal nozzle before adjustment is not ink output data, that is, the ink jet device does not jet ink at the position; the image data of the adjacent nozzles of the abnormal nozzles in the actual image data is the image data corresponding to the abnormal nozzles, and it can be understood that the adjacent nozzles of the abnormal nozzles print the image data corresponding to the abnormal nozzles at the corresponding printing positions, namely, the image corresponding to the abnormal nozzles is printed at the printing positions corresponding to the adjacent nozzles of the abnormal nozzles; please refer to fig. 3 and 4, use J 2 To J 16 For 15 consecutive nozzles to print the image dot matrix data including 15 lines in fig. 3, the abnormal nozzle J 8 Printing A 7 Line image data, adjacent nozzle J 7 Printing A 6 Line image data, A 7 Transferring image data corresponding to ink dots of 8 th column of row image data to A 6 Row 8 column (top to bottom) from J 7 Printing by nozzle A 7 Printing an image corresponding to the 8 th column ink dots of the row image data on A 6 The number of unprinted ink-out dots is further reduced by the image position corresponding to the 8 th row of the row, so that the quality of a printed image is ensured.
S322: if the ink output represented by the original image data corresponding to the adjacent nozzle is not zero, the ink output of the original image data corresponding to the adjacent nozzle is increased and then used as the image data corresponding to the adjacent nozzle, and the actual image data is obtained.
Specifically, if the ink output represented by the original image data is not zero, it can be understood that the image data corresponding to the abnormal nozzle before the adjacent nozzle is adjusted is the ink output data, that is, the ink jet device performs ink jet at the position; the image data of the adjacent nozzles of the abnormal nozzles in the actual image data is the image data after the ink output amount is increased, wherein the original image data corresponding to the adjacent nozzles of the abnormal nozzles is the image data after the ink output amount is increased, and it can be understood that if the original image data corresponding to the compensating nozzles is the ink output point, the ink output amount of the original image data is increased (the color information is unchanged, and only the ink output amount is added); that is, the adjacent nozzles of the abnormal nozzles still print the original image data at the corresponding printing positions, and only the ink quantity of the ink jet is larger than the ink output quantity in the original image data; please refer to fig. 3 and 4, use J 2 To J 16 For 15 consecutive nozzles to print the image dot matrix data including 15 lines in fig. 3, the abnormal nozzle J 8 Printing A 7 Line image data, adjacent nozzle J 7 Printing A 6 Line image data, A 7 Column 5 of the line image data is ink outlet dot, A 6 Column 5 of the line image data is also the ink outlet point, at which time A is increased 6 The ink output of the ink outlet point of the 5 th column of the row image data can be diffused to A 7 The image position listed in column 5 of the line image data (because the position is printed by the abnormal nozzle, i.e. no ink or insufficient ink exists), so that the ink exists in the printing area corresponding to the abnormal nozzle, and no obvious blank image exists in visual effect, thereby ensuring the quality of the printed image.
It should be noted that: the ink outlet amount of the nozzle can be controlled by adjusting the ink outlet hole, for example: the original image data corresponding to the adjacent nozzles of the abnormal nozzle is ink outlet data, so that the ink outlet amount of the original image data of the adjacent nozzles of the abnormal nozzle is increased, and the ink outlet amount is divided into a first aperture, a second aperture and a third aperture according to the apertures of the nozzles; the ink outlet of the first aperture corresponds to the ink outlet quantity, the ink outlet of the second aperture corresponds to the ink outlet quantity and the ink outlet of the third aperture corresponds to the ink outlet quantity, the ink outlet of the first aperture is larger than the ink outlet of the second aperture, the ink outlet of the second aperture is larger than the ink outlet of the third aperture, the first aperture is larger than the second aperture, and the second aperture is larger than the third aperture; when the original image data of the adjacent nozzles of the abnormal nozzle corresponds to the ink outlet amount of the second aperture, and the abnormal image data of the abnormal nozzle corresponds to the ink outlet amount of the second aperture or the third aperture, the original image data of the compensating nozzle is adjusted to correspond to the ink outlet amount of the first aperture; when the original image data of the adjacent nozzles of the abnormal nozzle corresponds to the ink outlet amount of the first aperture, and the abnormal image data of the abnormal nozzle corresponds to the ink outlet amount of the first aperture, the second aperture or the third aperture, the original image data of the adjacent nozzles of the abnormal nozzle is adjusted to correspond to the ink outlet amount of the first aperture; when the original image data of the adjacent nozzles of the abnormal nozzle corresponds to the ink outlet amount of the third aperture and the abnormal image data of the abnormal nozzle corresponds to the second aperture, the original image data of the adjacent nozzles of the abnormal nozzle is adjusted to correspond to the ink outlet amount of the first aperture; when the original image data of the adjacent nozzles of the abnormal nozzle corresponds to the ink outlet amount of the third aperture, and the abnormal image data of the abnormal nozzle corresponds to the ink outlet amount of the third aperture, the original image data of the adjacent nozzles of the abnormal nozzle is adjusted to correspond to the ink outlet amount of the second aperture.
It should be noted that: in the printing process, the adjacent nozzles of the abnormal nozzles print the image data corresponding to the adjacent nozzles of the abnormal nozzles in the actual image data at the corresponding printing positions, namely the adjacent nozzles of the abnormal nozzles are not only the normal printing of the adjacent nozzles but also the compensating printing of the abnormal nozzles at the corresponding printing positions.
Printing image data corresponding to the abnormal nozzle at a printing position corresponding to the compensating nozzle by taking a nozzle adjacent to the abnormal nozzle as the compensating nozzle of the abnormal nozzle, so that the number of unprinted ink dots is reduced, and the printing position is an adjacent position; the whole effect of the image is not affected; meanwhile, original image data corresponding to the compensation nozzle with increased ink quantity is printed at the printing position corresponding to the compensation nozzle, so that ink drops printed by the compensation nozzle can be fully diffused to a printing position area corresponding to the abnormal nozzle, a white gap caused by that the abnormal nozzle does not discharge ink is eliminated, and the effect of printing an image is ensured.
In one embodiment:
FIG. 8 is a flow chart of a method for compensating for abnormal nozzles in Onepass printing according to an embodiment of the present invention;
as shown in fig. 8, the S1 includes:
s101: acquiring position information of each nozzle of the spray head;
S102: detecting ink outlet information of each nozzle through a sensor to obtain detection information of each nozzle;
s103: and obtaining the position information of the abnormal nozzles according to the position information of the nozzles and the nozzle detection information.
Specifically, the position information of each nozzle is recorded, then the ink jet state of each nozzle is directly detected by a sensor, whether the ink is discharged normally or not, namely whether the ink is discharged or not or whether the ink concentration meets the requirement or not is judged, and the nozzle with abnormal ink discharge is marked as an abnormal nozzle.
In an embodiment, there is also provided a method of determining position information of an abnormal nozzle by printing a test chart;
the first step: acquiring position information of a nozzle of the spray head;
and a second step of: according to the position information of the nozzle, printing test data with the position mark of the nozzle is manufactured;
and a third step of: controlling the spray head to print according to the printing test data to obtain a test pattern;
fourth step: and obtaining the position information of the abnormal nozzle according to the test pattern.
Specifically, performing ink-jet test printing by controlling a spray head to obtain a test pattern; and determining the position information of the abnormal nozzle of the spray head according to the abnormal position in the test pattern. If the spray heads have no abnormal nozzles, the printed state diagram is formed by V 2 Each line segment is composed ofThe position mark corresponds to a unique nozzle, and each line segment is formed by independently printing one nozzle; when an abnormal nozzle appears in the spray head, the printed state diagram has obvious missing line segment conditions, and then the specific position information of the abnormal nozzle can be known according to the position identification of the missing line segment.
According to the Onepass printing abnormal nozzle compensation method provided by the embodiment 1 of the invention, the position information of the abnormal nozzle and the image lattice data of the image to be printed are obtained, then the printing position of each ink outlet row of the image to be printed is adjusted, so that the image data printed by the abnormal nozzle is adjusted from the first ink outlet row to the image data corresponding to the second ink outlet row, and meanwhile, the image data corresponding to the adjacent nozzle of the abnormal nozzle is adjusted, so that the actual image data is obtained; and then printing according to the actual image data, and changing the printing data of the printing image corresponding to the abnormal nozzles by adjusting the printing position of each ink outlet line of the printing image, and simultaneously printing according to the actual image data, so that the adjacent nozzles of the abnormal nozzles form compensation printing for the printing area corresponding to the abnormal nozzles in the printing process, the quality of the printing image is ensured, and the service life of the spray head is prolonged.
Example 2
The present invention also provides a printing apparatus, as shown in fig. 9, comprising:
and a data acquisition module: the method comprises the steps of acquiring position information of abnormal nozzles of a spray head and image lattice data of an image to be printed;
and a data processing module: the printing position corresponding to each ink outlet line of the image to be printed is adjusted according to the position information of the abnormal nozzle and the image lattice data, so that the ink outlet line printed by the abnormal nozzle is adjusted from a first ink outlet line to a second ink outlet line;
and a data calibration module: the method comprises the steps of adjusting image data corresponding to adjacent nozzles of the abnormal nozzles to obtain actual image data;
and a data printing module: for performing inkjet printing on a printing medium according to the actual image data to form a printed image;
the number of ink outlet points of the first ink outlet row is larger than that of the second ink outlet row.
According to the printing device provided by the embodiment 2 of the invention, the position information of the abnormal nozzles and the image lattice data of the image to be printed are acquired, then the printing positions of the ink outlet rows of the image to be printed are adjusted, so that the image data printed by the abnormal nozzles are adjusted from the first ink outlet row to the image data corresponding to the second ink outlet row, and meanwhile, the image data corresponding to the adjacent nozzles of the abnormal nozzles are adjusted, so that the actual image data is obtained; and then printing according to the actual image data, and changing the printing data of the printing image corresponding to the abnormal nozzles by adjusting the printing position of each ink outlet line of the printing image, and simultaneously printing according to the actual image data, so that the adjacent nozzles of the abnormal nozzles form compensation printing for the printing area corresponding to the abnormal nozzles in the printing process, the quality of the printing image is ensured, and the service life of the spray head is prolonged.
In one embodiment, a printing apparatus is provided;
the data processing module comprises:
determining an ink dot position unit: acquiring ink point position information of each ink outlet point in the image dot matrix data;
determining the minimum row of ink dots: obtaining the number of ink outlet points of each ink outlet row in the image dot matrix data according to the ink point position information of each ink outlet point;
a print position adjustment unit: according to the number of ink outlet points of each ink outlet row, adjusting the second ink outlet row to a printing position corresponding to the abnormal nozzle;
an image position adjustment unit: and sequentially adjusting the printing positions of the other ink outlet rows according to the adjustment mode of the second ink outlet row.
In one embodiment, a printing apparatus is provided;
the data calibration module comprises:
compensating nozzle unit: acquiring image data corresponding to the abnormal nozzle and original image data corresponding to adjacent nozzles of the abnormal nozzle;
compensation data unit: and adjusting the original image data corresponding to the adjacent nozzles according to the image data corresponding to the abnormal nozzles and the original image data corresponding to the adjacent nozzles to obtain the actual image data.
Preferably, the compensation data unit includes:
A data first adjusting unit: if the ink output represented by the original image data corresponding to the adjacent nozzles is zero, taking the image data corresponding to the abnormal nozzles as the image data corresponding to the adjacent nozzles to obtain the actual image data;
a data second adjusting unit: if the ink output represented by the original image data corresponding to the adjacent nozzle is not zero, the ink output of the original image data corresponding to the adjacent nozzle is increased and then used as the image data corresponding to the adjacent nozzle, and the actual image data is obtained.
In one embodiment, a printing apparatus is provided;
the data acquisition module comprises:
position acquisition unit: acquiring position information of each nozzle of the spray head;
an ink amount detecting unit: detecting ink outlet information of each nozzle through a sensor to obtain detection information of each nozzle;
position unit: and obtaining the position information of the abnormal nozzles according to the position information of the nozzles and the nozzle detection information.
Adopting the image broken hole printing device of the embodiment 2, by acquiring the position information of the abnormal nozzle and the image lattice data of the image to be printed, then adjusting the printing position of each ink outlet line of the image to be printed, so that the image data printed by the abnormal nozzle is adjusted from the first ink outlet line to the image data corresponding to the second ink outlet line, and simultaneously, the image data corresponding to the adjacent nozzle of the abnormal nozzle is adjusted to obtain the actual image data; and then printing according to the actual image data, and changing the printing data of the printing image corresponding to the abnormal nozzles by adjusting the printing position of each ink outlet line of the printing image, and simultaneously printing according to the actual image data, so that the adjacent nozzles of the abnormal nozzles form compensation printing for the printing area corresponding to the abnormal nozzles in the printing process, the quality of the printing image is ensured, and the service life of the spray head is prolonged.
Example 3
In particular, the processor may comprise a Central Processing Unit (CPU), or an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), or may be configured as one or more integrated circuits that implement embodiments of the present invention.
The memory may include mass storage for data or instructions. By way of example, and not limitation, the memory may comprise a Hard Disk Drive (HDD), floppy Disk Drive, flash memory, optical Disk, magneto-optical Disk, magnetic tape, or universal serial bus (Universal Serial Bus, USB) Drive, or a combination of two or more of the foregoing. 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 a non-volatile solid state memory. In a particular embodiment, the memory includes Read Only Memory (ROM). The ROM may be mask programmed ROM, programmable ROM (PROM), erasable PROM (EPROM), electrically Erasable PROM (EEPROM), electrically rewritable ROM (EAROM), or flash memory, or a combination of two or more of these, where appropriate.
The processor reads and executes the computer program instructions stored in the memory to implement any one of the Onepass printing abnormal nozzle compensation methods of embodiment 1 described 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 communication with each other.
The communication interface is mainly used for realizing communication among the modules, the devices, the units and/or the equipment in the embodiment of the invention.
The bus includes hardware, software, or both, that couple components of the printing device to each other. By way of example, and not limitation, the buses may include an Accelerated Graphics Port (AGP) or other graphics bus, an Enhanced Industry Standard Architecture (EISA) bus, a Front Side Bus (FSB), a HyperTransport (HT) interconnect, an Industry Standard Architecture (ISA) bus, an infiniband interconnect, a Low Pin Count (LPC) bus, a memory bus, a micro channel architecture (MCa) bus, a Peripheral Component Interconnect (PCI) bus, a PCI-Express (PCI-X) bus, a Serial Advanced Technology Attachment (SATA) bus, a video electronics standards association local (VLB) bus, or other suitable bus, or a combination of two or more of the above. The bus may include one or more buses, where appropriate. Although embodiments of the invention have been described and illustrated with respect to a particular bus, the invention contemplates any suitable bus or interconnect.
Example 4
In addition, in combination with the Onepass printing abnormal nozzle compensation method in the above embodiment 1, an embodiment of the present invention may be implemented by providing a computer readable medium. The computer readable medium has stored thereon computer program instructions; the computer program instructions, when executed by a processor, implement any one of the Onepass printing anomaly nozzle compensation methods described above in embodiment 1.
In summary, the method, the device, the equipment and the medium for compensating the abnormal nozzle of Onepass printing provided by the embodiment of the invention.
The method comprises the steps of obtaining position information of an abnormal nozzle and image lattice data of an image to be printed, then adjusting the printing position of each ink outlet line of the image to be printed, so that the image data printed by the abnormal nozzle is adjusted from a first ink outlet line to image data corresponding to a second ink outlet line, and simultaneously, adjusting the image data corresponding to adjacent nozzles of the abnormal nozzle to obtain actual image data; and then printing according to the actual image data, and changing the printing data of the printing image corresponding to the abnormal nozzles by adjusting the printing position of each ink outlet line of the printing image, and simultaneously printing according to the actual image data, so that the adjacent nozzles of the abnormal nozzles form compensation printing for the printing area corresponding to the abnormal nozzles in the printing process, the quality of the printing image is ensured, and the service life of the spray head is prolonged.
It should be understood that the invention is not limited to the particular arrangements and instrumentality described above and shown in the drawings. For the sake of brevity, a detailed description of known methods is omitted here. In the above embodiments, several specific steps are described and shown as examples. However, the method processes of the present invention are not limited to the specific steps described and shown, and those skilled in the art can make various changes, modifications and additions, or change the order between steps, after appreciating the spirit of the present invention.
The functional blocks shown in the above-described structural block diagrams may be implemented in hardware, software, firmware, or a combination thereof. When implemented in hardware, it may be, for example, an electronic circuit, an Application Specific Integrated Circuit (ASIC), suitable firmware, a plug-in, a function card, or the like. When implemented in software, the elements of the 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 over transmission media or communication links by a data signal carried in a carrier wave. A "machine-readable medium" may include any medium that can store or transfer information. Examples of machine-readable media include electronic circuitry, semiconductor memory devices, ROM, flash memory, erasable ROM (EROM), floppy disks, CD-ROMs, optical disks, hard disks, fiber optic media, radio Frequency (RF) links, and the like. The code segments may be downloaded via computer networks such as the internet, intranets, etc.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (10)
1. A method of Onepass printing anomaly nozzle compensation, the method comprising:
s1: acquiring position information of an abnormal nozzle of a spray head and image lattice data of an image to be printed;
s2: according to the position information of the abnormal nozzle and the image lattice data, adjusting the printing position corresponding to each ink outlet line of the image to be printed, so that the ink outlet line printed by the abnormal nozzle is adjusted from a first ink outlet line to a second ink outlet line;
s3: adjusting image data corresponding to adjacent nozzles of the abnormal nozzles to obtain actual image data;
s4: performing ink-jet printing on a printing medium according to the actual image data to form a printing image;
The number of ink outlet points of the first ink outlet row is larger than that of the second ink outlet row.
2. The Onepass printing anomaly nozzle compensation method of claim 1, wherein said second ink-out action is an ink-out action with a minimum ink-out point in said image dot matrix data.
3. The Onepass printing abnormal nozzle compensation method according to claim 1, wherein said S2 comprises:
s21: acquiring ink point position information of each ink outlet point in the image dot matrix data;
s22: obtaining the number of ink outlet points of each ink outlet row in the image dot matrix data according to the ink point position information of each ink outlet point;
s23: according to the number of ink outlet points of each ink outlet row, adjusting the second ink outlet row to a printing position corresponding to the abnormal nozzle;
s24: and sequentially adjusting the printing positions of the other ink outlet rows according to the adjustment mode of the second ink outlet row.
4. The Onepass printing abnormal nozzle compensation method according to claim 1, wherein said S3 comprises:
s31: acquiring image data corresponding to the abnormal nozzle and original image data corresponding to adjacent nozzles of the abnormal nozzle;
s32: according to the image data corresponding to the abnormal nozzle and the original image data corresponding to the adjacent nozzle, the original image data corresponding to the adjacent nozzle is adjusted to obtain the actual image data;
The original image data is the image data after the first ink outlet line is adjusted to the second ink outlet line.
5. The Onepass printing abnormal nozzle compensation method according to claim 4, wherein said S32 comprises:
s321: if the ink output represented by the original image data corresponding to the adjacent nozzles is zero, taking the image data corresponding to the abnormal nozzles as the image data corresponding to the adjacent nozzles to obtain the actual image data;
s322: if the ink output represented by the original image data corresponding to the adjacent nozzle is not zero, the ink output of the original image data corresponding to the adjacent nozzle is increased and then used as the image data corresponding to the adjacent nozzle, and the actual image data is obtained.
6. The Onepass printing abnormal nozzle compensation method according to claim 5, wherein adjacent nozzles to the abnormal nozzle are noted as compensation nozzles for the abnormal nozzle; the step S4 comprises the following steps: in the printing stroke, the compensating nozzle prints the image data corresponding to the compensating nozzle in the actual image data at the corresponding printing position.
7. The Onepass printing abnormal nozzle compensation method according to any one of claims 1 to 6, wherein S1 comprises:
S101: acquiring position information of each nozzle of the spray head;
s102: detecting ink outlet information of each nozzle through a sensor to obtain detection information of each nozzle;
s103: and obtaining the position information of the abnormal nozzles according to the position information of the nozzles and the nozzle detection information.
8. An Onepass printing apparatus comprising:
and a data acquisition module: the method comprises the steps of acquiring position information of abnormal nozzles of a spray head and image lattice data of an image to be printed;
and a data processing module: the printing position corresponding to each ink outlet line of the image to be printed is adjusted according to the position information of the abnormal nozzle and the image lattice data, so that the ink outlet line printed by the abnormal nozzle is adjusted from a first ink outlet line to a second ink outlet line;
and a data calibration module: the method comprises the steps of adjusting image data corresponding to adjacent nozzles of the abnormal nozzles to obtain actual image data;
and a data printing module: for performing inkjet printing on a printing medium according to the actual image data to form a printed image;
the number of ink outlet points of the first ink outlet row is larger than that of the second ink outlet row.
9. An Onepass 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 medium having stored thereon computer program instructions, which when executed by a processor, implement the method of any of claims 1-7.
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