CN111376587B - Printing control method, equipment and storage medium in printing process - Google Patents
Printing control method, equipment and storage medium in printing process Download PDFInfo
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- CN111376587B CN111376587B CN201811620129.7A CN201811620129A CN111376587B CN 111376587 B CN111376587 B CN 111376587B CN 201811620129 A CN201811620129 A CN 201811620129A CN 111376587 B CN111376587 B CN 111376587B
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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
- B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
- B41J3/407—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for marking on special material
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Abstract
The invention is suitable for the technical field of computers, and provides a printing control method, printing control equipment and a storage medium in a printing process, wherein the method comprises the following steps: acquiring target position information of abnormal ink drops falling on a substrate, which is sent by ink drop detection equipment; determining an abnormal printing nozzle which ejects the abnormal ink drop based on the target position information; and marking the abnormal printing spray head as a printing spray head which prohibits continuously spraying ink to the substrate. In the above manner, the printing control device acquires the position information of the abnormal ink drop on the substrate, which is sent when the ink drop detection device detects that the position of the ink drop sprayed by the printing nozzle on the substrate is deviated, determines the abnormal printing nozzle spraying the abnormal ink drop according to the position information, and prohibits the abnormal printing nozzle from continuously spraying ink to the substrate. The abnormal printing nozzle is forbidden to continue printing in the printing process, so that the printing accuracy is ensured, the yield of printed products is improved, the production cost is saved, and the quality of final printed devices is ensured.
Description
Technical Field
The invention belongs to the technical field of computers, and particularly relates to a printing control method, printing control equipment and a storage medium in a printing process.
Background
In recent years, Ink-jet printing (Ink-jet printing) technology has been studied and applied more and more deeply in the development of large-sized Organic Light-Emitting Diodes (OLEDs) and Quantum Dot Light Emitting Diodes (QLEDs) and other flat panel display devices. The ink jet printing technology is known as the most potential manufacturing method for realizing large-sized, low-cost flat panel displays because of its high material utilization and production efficiency.
In the process of manufacturing a flat panel display device by using an inkjet printing method, it is required to ensure that printed ink droplets accurately fall into a pixel slot, and not only certain requirements are placed on the printability (for example, proper viscosity, surface tension, and the like) of ink of a functional layer material, but also the ink droplets ejected by a nozzle used in the printing process are required to have proper volume, speed, angle, and the like, so that the ink droplets ejected by the nozzle can be ensured to accurately fall into the pixel slot.
In the existing ink-jet printing technology, parameters such as volume, speed, angle and the like of ink drops ejected by a printer nozzle are generally monitored, and then a proper nozzle is screened out for the next printing. However, at present, due to the fact that abnormal nozzles can not be detected in the printing process, even if screened nozzles are used for printing, printed ink drops often deviate from the pixel slots, the printing accuracy can not be guaranteed, the performance of a final printing device is affected, the yield of printed products is reduced, and the production cost is increased.
Disclosure of Invention
In view of this, embodiments of the present invention provide a printing control method, a printing control apparatus, and a storage medium in a printing process, so as to solve the problems in the prior art that an abnormal printing nozzle cannot be detected in the printing process, which causes a positional deviation of a printed ink droplet on a substrate, and the problems include low printing accuracy, high production cost, and low yield of printed products.
A first aspect of an embodiment of the present invention provides a printing control method in a printing process, including:
acquiring target position information of abnormal ink drops falling on a substrate, which is sent by ink drop detection equipment; the target position information is sent by the ink droplet detection equipment when detecting that the position of the ink droplet sprayed by the printing nozzle on the substrate is deviated;
determining an abnormal printing nozzle which ejects the abnormal ink drop based on the target position information;
and marking the abnormal printing spray head as a printing spray head which prohibits continuously spraying ink to the substrate.
A second aspect of an embodiment of the present invention provides an apparatus, including:
the acquisition unit is used for acquiring target position information of the abnormal ink drops falling on the substrate sent by the ink drop detection equipment; the target position information is sent by the ink droplet detection equipment when detecting that the position of the ink droplet sprayed by the printing nozzle on the substrate is deviated;
a determination unit configured to determine an abnormal printing head that ejects the abnormal ink droplet based on the target position information;
and the marking unit is used for marking the abnormal printing spray head as the printing spray head which prohibits continuing to spray ink to the substrate.
A third aspect of the embodiments of the present invention provides another device, including a processor, an input device, an output device, and a memory, where the processor, the input device, the output device, and the memory are connected to each other, where the memory is used to store a computer program that supports a device to execute the above method, where the computer program includes program instructions, and the processor is configured to call the program instructions to perform the following steps:
acquiring target position information of abnormal ink drops falling on a substrate, which is sent by ink drop detection equipment; the target position information is sent by the ink droplet detection equipment when detecting that the position of the ink droplet sprayed by the printing nozzle on the substrate is deviated;
determining an abnormal printing nozzle which ejects the abnormal ink drop based on the target position information;
and marking the abnormal printing spray head as a printing spray head which prohibits continuously spraying ink to the substrate.
A fourth aspect of embodiments of the present invention provides a computer-readable storage medium storing a computer program which, when executed by a processor, implements the steps of:
acquiring target position information of abnormal ink drops falling on a substrate, which is sent by ink drop detection equipment; the target position information is sent by the ink droplet detection equipment when detecting that the position of the ink droplet sprayed by the printing nozzle on the substrate is deviated;
determining an abnormal printing nozzle which ejects the abnormal ink drop based on the target position information;
and marking the abnormal printing spray head as a printing spray head which prohibits continuously spraying ink to the substrate.
According to the embodiment of the invention, target position information of abnormal ink drops falling on a substrate sent by ink drop detection equipment is obtained; determining an abnormal printing nozzle which ejects the abnormal ink drop based on the target position information; and marking the abnormal printing spray head as a printing spray head which prohibits continuously spraying ink to the substrate. The printing control device acquires the position information of the abnormal ink drop on the substrate sent by the ink drop detection device when the position of the ink drop sprayed by the printing nozzle on the substrate is detected to be deviated, determines the abnormal printing nozzle for spraying the abnormal ink drop according to the position information, and prohibits the abnormal printing nozzle from continuously spraying ink to the substrate. The abnormal printing nozzle is forbidden to continue printing in the printing process, so that the printing accuracy is ensured, the yield of printed products is improved, the production cost is saved, and the quality of final printed devices is ensured.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a flowchart illustrating an implementation of a printing control method in a printing process according to an embodiment of the present invention;
fig. 2 is a device diagram corresponding to a printing control method in a printing process according to another embodiment of the present invention;
FIG. 3 is a schematic view of a sample substrate according to an embodiment of the present invention;
FIG. 4 is a flowchart illustrating an implementation of a printing control method in a printing process according to another embodiment of the present invention;
FIG. 5 is a schematic diagram of an apparatus provided by an embodiment of the present invention;
fig. 6 is a schematic diagram of an apparatus according to another embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, fig. 1 is a schematic flow chart of a printing control method in a printing process according to an embodiment of the present invention. The main execution body of the printing control method in the printing process in this embodiment is the printing control device, and the device only needs to implement the relevant functions in this scheme, and does not limit the type, kind, name, number, and the like of the device. The printing control method in the printing process as shown in fig. 1 may include:
s101: target position information of an abnormal ink drop landing on a substrate sent by an ink drop detection device is acquired.
As shown in fig. 2, the printing control device is composed of a printing controller 200, an ink cartridge 210 and a printing nozzle 220, the ink droplet detection device is composed of an ink droplet detection controller 300 and a camera 310, a transparent or semitransparent slot 110 is arranged on the sample base station 100 for placing a sample substrate to be printed, the sample substrate is also transparent or semitransparent, and thus the camera arranged below the sample base station can shoot the sample substrate in real time. The printing nozzles 220 are arranged in a straight line, and can be adjusted to a horizontal line or a vertical line according to actual conditions, or can be adjusted to other arrangement modes. It should be noted that the above devices are only exemplary, and any device that can perform the relevant function may be used, and the type, category, name, number, etc. of the device are not limited.
The printing control device acquires target position information on the substrate on which the abnormal ink droplets sent by the ink droplet detection device land. The target position information is transmitted by the ink droplet detecting device when the position of the ink droplet ejected from the printing head on the substrate is detected to be shifted. The printing controller controls the printing nozzle to spray ink drops to the sample substrate, when the ink drop detection device detects that the positions of the ink drops sprayed by the printing nozzle on the sample substrate are deviated, the ink drops are recorded as abnormal ink drops and position information of the ink drops on the sample substrate is recorded, the ink drop detection device sends the position information of the abnormal ink drops on the substrate to the printing control device, and the printing controller obtains the position information of the abnormal ink drops sent by the ink drop detection device.
Specifically, as shown in fig. 3, the sample substrate is formed by regularly arranging a plurality of pixel slots, and in the printing process, the printing controller controls the printing nozzle to eject ink droplets onto the sample substrate, which can also be understood as controlling the printing nozzle to eject ink droplets onto the sample substrate by the printing controller, so that the ink droplets accurately fall into the pixel slots.
The camera in the ink droplet detection equipment moves synchronously with the printing nozzle, the camera is connected with a detector, the camera shoots position information pictures of ink droplets sprayed by the printing nozzle and falling on the sample substrate in real time, the detector connected with the camera analyzes the shooting result, and whether the positions of the ink droplets are deviated or not can be analyzed according to the characteristics of the color, the shape and the like of the ink droplets falling on the sample substrate. When the ink drop accurately falls into the pixel groove (namely, the position of the ink drop on the sample substrate is accurate and no offset occurs), the shape of the ink drop is shot to be a regular pixel groove shape. When the shape of the shot ink drop is irregular, the detector analyzes the ink drop as an abnormal ink drop, the position information (the coordinate information of the recordable pixel slot) of the ink drop falling on the sample substrate is recorded, the detector transmits the position information of the abnormal ink drop to the ink drop detection controller, the ink drop detection controller transmits the position information of the abnormal ink drop to the printing controller, and the printing controller acquires the position information of the abnormal ink drop.
Or in the printing process, acquiring the information of an abnormal printing nozzle which ejects abnormal ink drops and is sent by the ink drop detection equipment; and the information of the abnormal printing nozzle is sent by the ink drop detection equipment when the parameters of the ink drops sprayed by the printing nozzle are detected to be out of the preset parameter range.
Specifically, the preset parameter range is input into the ink droplet detecting device in advance by the user according to the actual demand for the ink droplet, and the preset parameter range includes, but is not limited to, the volume of the ink droplet, the amount of ejected ink, the ejection speed of the ink droplet, the ejection power, the angle of ejected ink droplet, and the like. In the actual printing process, if the requirements on parameters of all aspects of the parameters of the ink droplets ejected by the printing nozzles are high, the preset parameter range can be set to be smaller, if the requirements on parameters of all aspects of the ink droplets ejected by the printing nozzles are not high, the preset parameter range can be set to be loose, the specific parameter range value can be set according to the specific requirements of users on the ink droplets, and the method is not limited to this.
When the parameters of the ink drops sprayed by the printing nozzle do not belong to the preset parameter range, judging the ink drops to be abnormal ink drops; when the parameters of the ink drops ejected by the printing nozzle belong to the preset parameter range, the ink drops are judged to be normal ink drops. It should be noted that the preset parameter types may be set to one or more types according to actual conditions, and when the preset parameter types are set to multiple types, for example, the ranges of three parameter types of the volume of the ink drop, the angle of the ejected ink drop, and the ejection speed of the ink drop are set, the ink drop ejected by the print head simultaneously conforms to the ranges of the three parameter types, and then belongs to the normal ink drop.
The printing controller controls the printing nozzle to spray ink drops to the sample substrate, when the ink drop detection device detects that parameters of the ink drops sprayed by the printing nozzle do not belong to a preset parameter range, the ink drops are recorded as abnormal ink drops, information of the abnormal printing nozzle spraying the abnormal ink drops is searched, the ink drop detection device sends the information of the abnormal printing nozzle to the printing control device, and the printing controller obtains the information of the abnormal printing nozzle sent by the ink drop detection device.
A camera in the ink droplet detection equipment moves synchronously with the printing nozzle, a detector is connected to the camera, the camera shoots pictures of ink droplets sprayed by the printing nozzle in real time, and the detector connected with the camera analyzes shooting results. For example, the volume of the ink droplets may be analyzed according to the shape, diameter, etc. of the captured ink droplets, the velocity of the ink droplets may be analyzed according to the time when two consecutive ink droplet photographs are captured, or the angle of the ink droplets may be analyzed according to the position where two consecutive ink droplet photographs are captured.
And judging whether the parameter result obtained by analysis is within a preset parameter range input into the ink droplet detection equipment by a user in advance. When the parameters of the ink drops do not belong to the preset parameter range, the ink drops are judged to be abnormal ink drops, a printing nozzle which ejects the abnormal ink drops is searched, the nozzle is an abnormal nozzle, the ink drop detection controller sends the information of the abnormal printing nozzle to the printing controller, and the printing controller obtains the information of the abnormal printing nozzle.
S102: and determining an abnormal printing nozzle which ejects the abnormal ink drop based on the target position information.
The printing control device determines an abnormal printing head which ejects the abnormal ink drop according to the position information of the abnormal ink drop which lands on the substrate. Before printing begins, a printing controller in the printing control device establishes printing connection (a specific printing path) with a printing nozzle and stores the printing connection in the printing controller. Specifically, a printing path is planned according to an area to be printed in the sample substrate, the number of nozzles in the printing nozzles, and the arrangement mode of the nozzles. As shown in fig. 3, assuming that the area of the sample substrate to be printed is the area shown in fig. 3, i.e. the area to be printed which is composed of 20 × 4 pixel slots, the printing head is composed of 20 heads arranged transversely. When the printing path is planned, one nozzle can be set to spray four ink drops, so that the four ink drops fall into corresponding four pixel slots, for example, a first ink drop sprayed by the first nozzle needs to fall into a pixel slot of a first row and a first column, a second ink drop needs to fall into a pixel slot of a second row and a first column, a third ink drop needs to fall into a pixel slot of a third row and a first column, and a fourth ink drop needs to fall into a pixel slot of a fourth row and a first column; the first ink drop ejected by the second nozzle needs to fall into the pixel slot of the first row and the second column, the second ink drop needs to fall into the pixel slot of the second row and the second column, the third ink drop needs to fall into the pixel slot of the third row and the second column, and the fourth ink drop needs to fall into the pixel slot of the fourth row and the second column; and by analogy, planning all printing paths.
In the printing process, the printing nozzle firstly prints the area to be printed formed by the first row of pixel grooves, and then prints the area to be printed formed by the second row of pixel grooves until all the areas to be printed are printed. Specifically, after the first ink drop ejected by the first nozzle falls into the pixel slot in the first row and the first column, the second nozzle ejects the first ink drop to fall into the pixel slot in the first row and the second column, and the third nozzle … …, until the printing of the area to be printed composed of the pixel slots in the first row is completed, the printing of the second row is started.
When the position of a certain ink drop on the sample substrate is deviated, the printing nozzle for ejecting the ink drop can be determined according to the position of the ink drop on the sample substrate. For example, if the ink droplet that would fall into the pixel slot in the first row and the fourth column on the sample substrate does not completely fall into the pixel slot, it is proved that the position where the ink droplet falls onto the sample substrate is shifted, and the corresponding nozzle is the fourth nozzle, and the nozzle is determined to be the abnormal printing nozzle.
Further, the printing nozzle has a nozzle number.
Each print head has a head number that can be used to identify the head. The specific number can be set according to actual conditions, and can be set as a numerical value, a letter, and the like, which is not limited in this regard. The numbers of the heads are usually set to values that are incremented one by one, and for example, when there are 10 heads, the numbers are 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, respectively, and may also be set to 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, respectively. It is worth noting that the number of the nozzle is unique in one complete printing process. For example, before the printing is started, the printing controller and the printing nozzle in the printing control device plan the printing path, and at this time, the nozzle number is set, and the nozzle number that is set at the beginning is used until the printing is completed.
Further, in order to quickly and accurately determine the abnormal printing head that ejects the abnormal ink droplet, S102 may include: and determining the nozzle number of the abnormal printing nozzle which ejects the abnormal ink drop according to the preset corresponding relation among the target position information, the position information of the ink drops ejected by all the printing nozzles falling on the substrate and the nozzle number.
The user can preset the corresponding relation between the positions of the ink drops sprayed by the printing nozzles on the sample substrate and the nozzle numbers, and the nozzle numbers of the abnormal printing nozzles spraying the abnormal ink drops are determined according to the position information of the abnormal ink drops on the substrate. Specifically, each ink droplet ejected from the print head needs to accurately fall on a fixed position on the sample substrate (it can also be understood that each ink droplet ejected from the print head needs to accurately fall in a pixel slot on the sample substrate), each head number may correspond to one or more positions where the ink droplet falls on the substrate, and when the position where a certain ink droplet falls on the substrate is shifted, the head number of the print head ejecting the ink droplet is searched.
When each head number corresponds to a position at which an ink droplet lands on the substrate, for example, as shown in fig. 3, assuming that the area of the sample substrate to be printed is the first row of the area illustrated in fig. 3, i.e., the area to be printed consisting of the pixel groove arrangement of 20 × 1, the printing head consists of 20 heads arranged laterally. Wherein each pixel slot represents a location where each ink drop lands on the sample substrate. The numbers of the heads of the 20 heads are set to 0, 1, 2, 3, 4, 5 … … 17, 18, and 19, respectively. When a coordinate system is established with the pixel grooves in the first row and the first column shown in fig. 3 as the origin, the coordinates of the positions where the ink droplets ejected from the print head land on the sample substrate are (0, 0), (1, 0), (2, 0), (3, 0), (4, 0), (5, 0), … …, (17, 0), (18, 0), (19, 0), respectively. The position coordinates of the ink drops sprayed by the printing nozzles on the sample substrate correspond to the serial numbers of the nozzles one to one.
When the position coordinates of the ink drops falling on the sample substrate are (0, 0), the number of the corresponding nozzle is 0; when the position coordinate of the ink drop on the sample substrate is (1, 0), the number of the corresponding nozzle is 1; when the position coordinate of the ink drop on the sample substrate is (2, 0), the number of the corresponding nozzle is 2; when the position coordinate of the ink droplet landing on the sample substrate is (3, 0), the corresponding head number is 3 … …, and when the position coordinate of the ink droplet landing on the sample substrate is (18, 0), the corresponding head number is 18; when the position coordinate of the ink droplet landing on the sample substrate is (19, 0), the corresponding head number is 19. In the printing process, if the position of the ink drop which is supposed to fall on the sample substrate and has the position coordinate of (2, 0) is detected to have deviation (if the ink drop does not fall into the position accurately, the ink drop only falls into a half or does not fall into the position completely), the corresponding nozzle number is searched for to be 2 according to the position information (2, 0), namely the nozzle number of the abnormal printing nozzle which ejects the abnormal ink drop is 2; if the ink drop position which is originally landed on the sample substrate and has the position coordinate of (3, 0) is detected to have deviation, searching the corresponding nozzle number of 3 according to the position information (3, 0), namely, the nozzle number of the abnormal printing nozzle which ejects the abnormal ink drop is 3; if the position of the ink drop which is supposed to fall on the sample substrate and has the position coordinate of (17, 0) is detected to be deviated, the corresponding nozzle number 17 is searched according to the position information (17, 0), namely the nozzle number of the abnormal printing nozzle which ejects the abnormal ink drop is 17. And by analogy, the nozzle number of the abnormal printing nozzle which ejects the abnormal ink drop is obtained. It should be noted that the coordinate information indicating the position of the ink drop on the sample substrate is only an exemplary example, and other indication methods are also possible, which are not limited to this.
When each head number corresponds to a position where a plurality of ink droplets land on the substrate, for example, as shown in fig. 3, assuming that a sample substrate area to be printed is an area illustrated in fig. 3, i.e., an area to be printed composed of an arrangement of pixel grooves of 20 × 4, the printing head is composed of 20 heads arranged laterally. Wherein each pixel slot represents a location where each ink drop lands on the sample substrate. The numbers of the heads of the 20 heads are set to 0, 1, 2, 3, 4, 5, … …, 17, 18, and 19, respectively. Establishing a coordinate system by taking the pixel grooves in the fourth row and the first column shown in fig. 3 as an origin, and setting coordinates of positions where ink droplets ejected from the printing head land on the sample substrate as (0, 0), (1, 0), (2, 0), … …, (17, 0), (18, 0), (19, 0); (0, 1), (1, 1), (2, 1), … …, (17, 1), (18, 1), (19, 1); (0, 2), (1, 2), (2, 2), … …, (17, 2), (18, 2), (19, 2); (0, 3), (1, 3), (2, 3), … …, (17, 3), (18, 3), (19, 3). The head number and the position coordinates of the ink droplets ejected from the print head on the sample substrate are in a one-to-many relationship.
Specifically, when the coordinates of the positions where the ink droplets land on the sample substrate are (0, 0), (0, 1), (0, 2), and (0, 3), respectively, the corresponding numbers of the heads are all 0; when the coordinates of the positions of the ink drops falling on the sample substrate are (1, 0), (1, 1), (1, 2) and (1, 3), the corresponding spray heads are all numbered as 1; when the coordinates of the positions where the ink droplets land on the sample substrate are (2, 0), (2, 1), (2, 2), and (2, 3), respectively, the corresponding head numbers are all 2 … …, and when the coordinates of the positions where the ink droplets land on the sample substrate are (18, 0), (18, 1), (18, 2), (18, 3), respectively, the corresponding head numbers are all 18; when the coordinates of the positions where the ink droplets land on the sample substrate are (19, 0), (19, 1), (19, 2), and (19, 3), respectively, the corresponding head numbers are all 19.
If the ink drop position which is originally landed on the sample substrate and has the position coordinate of (1, 0) is detected to have deviation, searching the corresponding nozzle number of 1 according to the position information of (1, 0), namely, the nozzle number of the abnormal printing nozzle which ejects the abnormal ink drop is 1; if the ink drop position which is originally landed on the sample substrate and has the position coordinate of (1, 1) is detected to have deviation, searching the corresponding nozzle number of 1 according to the position information (1, 1), namely, the nozzle number of the abnormal printing nozzle which ejects the abnormal ink drop is 1; if the ink drop position which is originally landed on the sample substrate and has the position coordinate of (19, 0) is detected to have deviation, the corresponding nozzle number of 19 is searched according to the position information (19, 0), namely the nozzle number of the abnormal printing nozzle which ejects the abnormal ink drop is 19; if the position of the ink drop which is supposed to fall on the sample substrate and has the position coordinate of (19, 1) is detected to be deviated, the corresponding nozzle number 19 is searched according to the position information (19, 1), namely the nozzle number of the abnormal printing nozzle which ejects the abnormal ink drop is 19. And by analogy, the nozzle number of the abnormal printing nozzle which ejects the abnormal ink drop is obtained.
S103: and marking the abnormal printing spray head as a printing spray head which prohibits continuously spraying ink to the substrate.
The print control apparatus marks the abnormal print head as a print head that prohibits continuing ink ejection to the sample substrate. And after determining the abnormal printing nozzle which ejects the abnormal ink drop, the printing controller marks the abnormal printing nozzle for inhibiting printing, and controls the printing nozzle to stop using the abnormal printing nozzle to continuously jet ink drops to the sample substrate.
Specifically, each spray head has a spray head number that can be used to identify the spray head. When the printing controller determines the abnormal printing nozzle which ejects the abnormal ink drop, the number of the abnormal printing nozzle can be marked with red, or the number X and the like are marked after the number of the abnormal printing nozzle is marked as a mark for prohibiting printing of the abnormal printing nozzle, and when the printing controller controls the printing nozzle to eject the ink drop, the number of the abnormal printing nozzle is not called, namely the abnormal printing nozzle is not used for continuously ejecting the ink drop to the sample substrate.
It should be noted that the manner of inhibiting the print of the mark by the abnormal print head may be specifically set according to actual situations, and the above-mentioned marking manner is only an exemplary illustration and is not limited thereto.
According to the scheme, the printing control equipment is used for acquiring the position information of the abnormal ink drop on the substrate, which is sent when the ink drop detection equipment detects that the position of the ink drop sprayed by the printing nozzle on the substrate is deviated, determining the abnormal printing nozzle for spraying the abnormal ink drop according to the position information, and forbidding the abnormal printing nozzle to continuously spray ink to the substrate. The abnormal printing nozzle is forbidden to continue printing in the printing process, so that the printing accuracy is ensured, the yield of printed products is improved, the production cost is saved, and the quality of final printed devices is ensured.
Referring to fig. 4, fig. 4 is a schematic flowchart of another printing control method in a printing process according to an embodiment of the present invention. The main execution body of the printing control method in the printing process in this embodiment is the printing control device, and the device only needs to implement the relevant functions in this scheme, and does not limit the type, kind, name, number, and the like of the device. The printing control method in the printing process as shown in fig. 4 may include:
s201: acquiring target position information of abnormal ink drops falling on a substrate, which is sent by ink drop detection equipment; the target position information is sent by the ink droplet detection equipment when detecting that the position of the ink droplet sprayed by the printing nozzle on the substrate is deviated.
In this embodiment, S201 is identical to S101 in the previous embodiment, and please refer to the related description of S101 in the previous embodiment, which is not repeated herein.
In order to make the subsequent abnormal nozzle searching simpler and more accurate, optionally, before S201, the method further includes acquiring information of an abnormal printing nozzle which is sent by the ink droplet detection device and ejects an abnormal ink droplet, and marking the abnormal printing nozzle as a printing nozzle which prohibits ink from being continuously ejected to the substrate; and the information of the abnormal printing nozzle is sent by the ink drop detection equipment when the parameters of the abnormal ink drops are detected to be out of the preset parameter range before the ink drops sprayed by the printing nozzle fall on the sample substrate.
The printing control device acquires information of an abnormal printing nozzle which ejects an abnormal ink droplet and is sent by the ink droplet detection device, and marks the abnormal printing nozzle as a printing nozzle which prohibits continuous ink ejection to the sample substrate. And the information of the abnormal printing nozzle is sent by the ink drop detection equipment when the parameters of the abnormal ink drops are detected to be out of the preset parameter range before the ink drops sprayed by the printing nozzle fall on the sample substrate.
Specifically, the preset parameter range is input into the ink droplet detecting device in advance by the user according to the actual demand for the ink droplet, and the preset parameter range includes, but is not limited to, the volume of the ink droplet, the amount of ejected ink, the ejection speed of the ink droplet, the ejection power, the angle of ejected ink droplet, and the like. In the actual printing process, if the requirements on parameters of all aspects of the parameters of the ink droplets ejected by the printing nozzles are high, the preset parameter range can be set to be smaller, if the requirements on parameters of all aspects of the ink droplets ejected by the printing nozzles are not high, the preset parameter range can be set to be loose, the specific parameter range value can be set according to the specific requirements of users on the ink droplets, and the method is not limited to this.
When the parameters of the ink drops sprayed by the printing nozzle do not belong to the preset parameter range, judging the ink drops to be abnormal ink drops; when the parameters of the ink drops ejected by the printing nozzle belong to the preset parameter range, the ink drops are judged to be normal ink drops. It should be noted that the preset parameter types may be set to one or more types according to actual conditions, and when the preset parameter types are set to multiple types, for example, the ranges of three parameter types of the volume of the ink drop, the angle of the ejected ink drop, and the ejection speed of the ink drop are set, the ink drop ejected by the print head simultaneously conforms to the ranges of the three parameter types, and then belongs to the normal ink drop.
The printing controller controls the printing nozzle to spray ink drops to the sample substrate, when the ink drop detection device detects that parameters of the ink drops sprayed by the printing nozzle do not belong to a preset parameter range, the ink drops are recorded as abnormal ink drops, information of the abnormal printing nozzle spraying the abnormal ink drops is searched, the ink drop detection device sends the information of the abnormal printing nozzle to the printing control device, and the printing controller obtains the information of the abnormal printing nozzle sent by the ink drop detection device.
The camera in the ink droplet detection equipment moves synchronously with the printing nozzle, the camera is connected with a detector, the camera shoots a picture of the ink droplet sprayed by the printing nozzle in real time, the detector connected with the camera analyzes a shooting result, parameters of the ink droplet can be analyzed according to characteristics such as the shape of the shot ink droplet, and whether the analysis parameter result belongs to a preset parameter range input into the ink droplet detection equipment by a user in advance is judged. When the parameters of the ink drops do not belong to the preset parameter range, the ink drops are judged to be abnormal ink drops, a printing nozzle which ejects the abnormal ink drops is searched, the nozzle is an abnormal nozzle, the ink drop detection controller sends the information of the abnormal printing nozzle to the printing controller, and the printing controller obtains the information of the abnormal printing nozzle. The printing controller marks the abnormal printing nozzle as a printing nozzle which prohibits to continuously jet ink to the sample substrate according to the information of the abnormal printing nozzle, such as the nozzle number.
When the ink drop detection equipment detects that the position of an ink drop on a substrate is deviated, searching for an abnormal printing nozzle corresponding to the ink drop, marking the abnormal printing nozzle as a printing nozzle which prohibits to continuously jet ink to the sample substrate, performing one-time printing, analyzing whether the parameters of the ink drop jetted by the printing nozzle belong to a preset parameter range, judging whether the ink drop belongs to a normal ink drop or an abnormal ink drop, and when the ink drop belongs to the abnormal ink drop, searching for the abnormal printing nozzle jetting the abnormal ink drop and marking the abnormal printing nozzle jetting the abnormal ink drop as the printing nozzle which prohibits to continuously jet ink to the sample substrate. Therefore, the subsequent abnormal nozzle detection process can be concise, convenient and quick, the detection result is more accurate, and the working efficiency is improved.
S202: and controlling all the printing nozzles to stop jetting ink to the substrate, marking and storing the target position information.
And controlling all printing nozzles to stop jetting ink to the sample substrate, marking and storing target position information.
Specifically, after the printing control device acquires the target position information of the abnormal ink drop falling on the substrate sent by the ink drop detection device, the current printing process is suspended, that is, all printing nozzles are controlled to stop jetting ink to the sample substrate, and the position information of the abnormal ink drop falling on the sample substrate is marked and stored.
S203: and determining an abnormal printing nozzle which ejects the abnormal ink drop based on the target position information.
In this embodiment, S203 is identical to S102 in the previous embodiment, and please refer to the related description of S102 in the previous embodiment, which is not repeated herein.
S204: and marking the abnormal printing spray head as a printing spray head which prohibits continuously spraying ink to the substrate.
In this embodiment, S204 is identical to S103 in the previous embodiment, and please refer to the related description of S103 in the previous embodiment, which is not repeated herein.
Further, S204 may also include S205 to S206, specifically as follows:
s205: and calculating the number of available printing spray heads based on the total number of the printing spray heads and the number of the abnormal printing spray heads.
And calculating the number of available printing spray heads according to the total number of the printing spray heads and the number of the abnormal printing spray heads. Assuming that the total number of the printing nozzles in the current printing is 20, and the number of the detected abnormal printing nozzles is 1, the number of the remaining available printing nozzles is 19.
S206: and replanning a printing path based on the position information, the residual area to be printed in the substrate and the number of the available printing spray heads, and continuing printing according to the printing path.
And replanning the printing path according to the position information of the ink drops falling on the sample substrate, the residual area to be printed in the substrate and the number of the available printing nozzles, and controlling the available printing nozzles to continue printing according to the printing path.
The camera shoots all ink drops on the current sample substrate, the detector analyzes the information of the remaining area to be printed in the sample substrate and sends the information to the printing control equipment, and the printing control equipment plans the printing path again according to the remaining area to be printed, the number of available printing nozzles and the position information of the ink drops which fall on the sample substrate. It should be noted that, when the path is re-planned, the remaining area to be printed in the substrate includes the correct area where the abnormal ink drop should fall into the sample substrate.
Specifically, assuming that the area of the sample substrate to be printed is the area shown in fig. 3, i.e., the area to be printed, which is composed of 20 × 4 pixel slots, the printing head is composed of 20 nozzles arranged in the transverse direction. Wherein each pixel slot represents a location where each ink drop lands on the sample substrate. The numbers of the heads of the 20 heads are set to 0, 1, 2, 3, 4, 5 … … 17, 18, and 19, respectively. Establishing a coordinate system by taking the pixel grooves in the fourth row and the first column shown in fig. 3 as an origin, and setting coordinates of positions where ink droplets ejected from the printing head land on the sample substrate as (0, 0), (1, 0), (2, 0), … …, (17, 0), (18, 0), (19, 0); (0, 1), (1, 1), (2, 1), … …, (17, 1), (18, 1), (19, 1); (0, 2), (1, 2), (2, 2), … …, (17, 2), (18, 2), (19, 2); (0, 3), (1, 3), (2, 3), … …, (17, 3), (18, 3), (19, 3).
When the ink drop detection device detects that the ink drop which is supposed to fall at the position coordinate (0, 2) does not accurately fall at the position, the ink drop is proved to be an abnormal ink drop, the printing control device acquires the position information of the abnormal ink drop which is sent by the ink drop detection device and falls on the substrate, the printing process is suspended, and the position information is marked and stored. And according to the preset corresponding relation between the position information of the ink drop falling on the substrate and the serial number of the nozzle, searching out the serial number 0 of the printing nozzle of the abnormal ink drop, and marking the serial number 0 of the printing nozzle as red so that the nozzle with the serial number 0 does not continuously jet ink drops to the sample substrate.
At this time, the remaining areas to be printed are areas surrounded by the position coordinates (0, 2), (0, 3), (19, 2), (19, 3), the number of available printing heads is 19, and the position coordinates at which the ink droplets are required to land on the sample substrate are (0, 2), (1, 2), (2, 2), … …, (17, 2), (18, 2), (19, 2); (0, 3), (1, 3), (2, 3), … …, (17, 3), (18, 3), (19, 3); (0, 4), (19, 3), (19, 4).
Specifically, when the coordinates of the positions where the ink droplets land on the sample substrate are (0, 2), respectively, the corresponding head number is 1; when the coordinates of the positions of the ink drops falling on the sample substrate are (1) and (2), the number of the corresponding nozzle is 2; when the coordinates of the positions of the ink drops landed on the sample substrate are (1, 3), the corresponding nozzle is numbered 3 … …, and so on, and a new printing path is planned.
After the new printing path is planned, the printing process is resumed, the new printing path can cover the printing path established before printing, and the printing control equipment can control the available printing nozzles to continue printing according to the printing path.
When each spray head number corresponds to the position of one ink drop on the substrate (namely when each spray head only sprays one ink drop), in the printing process, when an abnormal ink drop occurs, the printing control equipment marks and stores the position information of the abnormal ink drop on the sample substrate, the printing route is not planned again, other printing spray heads continue to print the remaining area to be printed according to the printing route stored before the printing control equipment, and after the printing is finished, the printing control equipment controls the available printing spray heads to independently print the ink drop according to the marked and stored position information of the abnormal ink drop on the sample substrate. If the ink drop detection device detects that the ink drops which completely fall into the pixel grooves of the sample substrate only fall into a half, the information is transmitted to the printing control device, and the printing control device controls the printing spray head to spray half of the ink drop amount to the position.
When each nozzle number corresponds to the position of a plurality of ink drops on the substrate (namely each nozzle needs to eject a plurality of ink drops), in the printing process, when abnormal ink drops occur, the printing control equipment marks and stores the position information of the abnormal ink drops on the sample substrate, and then the printing route does not need to be planned again. Specifically, after the abnormal printing ink drop occurs, the printing process is suspended, ink is jetted to the correct position where the abnormal ink drop originally falls on the substrate by the next adjacent nozzle of the abnormal printing nozzle which jets the abnormal ink drop, and after the independent ink jetting is finished, the rest printing nozzles continue to print the remaining area to be printed according to the printing path which is stored before the printing control equipment except the abnormal printing nozzle. Since each head number corresponds to the position where a plurality of ink droplets land on the substrate, when an abnormal print head is encountered again and abnormal ink droplets are ejected, the problem is still solved as described above. Therefore, when the printing workload is moderate, the time for replanning the printing path is saved, and the printing efficiency is further improved.
According to the scheme, the printing control equipment is used for acquiring the position information of the abnormal ink drop on the substrate, which is sent when the ink drop detection equipment detects that the position of the ink drop sprayed by the printing nozzle on the substrate is deviated, determining the abnormal printing nozzle for spraying the abnormal ink drop according to the position information, and forbidding the abnormal printing nozzle to continuously spray ink to the substrate. The abnormal printing nozzle is forbidden to continue printing in the printing process, so that the printing accuracy is ensured, the yield of printed products is improved, the production cost is saved, and the quality of final printed devices is ensured.
Referring to fig. 5, fig. 5 is a schematic diagram of an apparatus according to an embodiment of the present invention. The device comprises units for performing the steps in the embodiments corresponding to fig. 1 and 4. Please refer to fig. 1 and fig. 4 for the corresponding embodiments. For convenience of explanation, only the portions related to the present embodiment are shown. Referring to fig. 4, the apparatus 4 includes:
an acquisition unit 410 for acquiring target position information of an abnormal ink droplet landing on a substrate sent by an ink droplet detection device; the target position information is sent by the ink droplet detection equipment when detecting that the position of the ink droplet sprayed by the printing nozzle on the substrate is deviated.
A determination unit 420 for determining an abnormal printing head which ejects the abnormal ink droplet based on the target position information.
A marking unit 430, configured to mark the abnormal print head as a print head that prohibits ink from being continuously ejected to the substrate.
Further, the print head has a head number, and the determining unit 420 is specifically configured to: and determining the nozzle number of the abnormal printing nozzle which ejects the abnormal ink drop according to the preset corresponding relation among the target position information, the position information of the ink drops ejected by all the printing nozzles falling on the substrate and the nozzle number.
Further, the apparatus further comprises:
and the control unit is used for controlling all the printing nozzles to stop jetting ink to the substrate, marking and storing the target position information.
Further, the apparatus further comprises:
and the calculating unit is used for calculating the number of the available printing spray heads based on the total number of the printing spray heads and the number of the abnormal printing spray heads.
And the planning unit is used for re-planning a printing path based on the position information, the residual area to be printed in the substrate and the number of the available printing spray heads, and continuing printing according to the printing path.
Further, the apparatus may further include:
the detection unit is used for acquiring information of an abnormal printing nozzle which ejects abnormal ink drops and is sent by the ink drop detection equipment, and marking the abnormal printing nozzle as a printing nozzle which prohibits ink from being continuously jetted to the substrate; and the information of the abnormal printing nozzle is sent by the ink drop detection equipment when the parameters of the abnormal ink drops are detected to be out of the preset parameter range before the ink drops sprayed by the printing nozzle fall on the sample substrate.
Referring to fig. 6, fig. 6 is a schematic diagram of an apparatus according to another embodiment of the present invention. As shown in fig. 6, the apparatus 5 of this embodiment includes: a processor 50, a memory 51 and a computer program 52 stored in said memory 51 and executable on said processor 50. The processor 50, when executing the computer program 52, implements the steps in the print control method embodiment in the printing process of each apparatus described above, such as S101 to S103 shown in fig. 1. Alternatively, the processor 50, when executing the computer program 52, implements the functions of the units in the device embodiments, such as the functions of the units 410 to 430 shown in fig. 5.
Illustratively, the computer program 52 may be divided into one or more units, which are stored in the memory 51 and executed by the processor 50 to accomplish the present invention. The one or more units may be a series of computer program instruction segments capable of performing specific functions, which are used to describe the execution of the computer program 52 in the device 5. For example, the computer program 52 may be divided into an acquisition unit, a determination unit, and a labeling unit, each unit functioning specifically as described above.
The apparatus may include, but is not limited to, a processor 50, a memory 51. Those skilled in the art will appreciate that fig. 6 is merely an example of a device 5 and does not constitute a limitation of device 5 and may include more or fewer components than shown, or some components in combination, or different components, e.g., the device may also include input output devices, network access devices, buses, etc.
The Processor 60 may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic, discrete hardware components, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The memory 51 may be an internal storage unit of the device 5, such as a hard disk or a memory of the device 5. The memory 51 may also be an external storage device of the device 5, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), etc. provided on the device 5. Further, the memory 51 may also include both an internal storage unit and an external storage device of the device 5. The memory 51 is used for storing the computer program and other programs and data required by the device. The memory 51 may also be used to temporarily store data that has been output or is to be output.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present 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 solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.
Claims (9)
1. A print control method in a printing process, comprising:
acquiring information of an abnormal printing nozzle which ejects abnormal ink drops and is sent by ink drop detection equipment, and marking the abnormal printing nozzle as a printing nozzle which prohibits ink from being continuously jetted to a substrate; the information of the abnormal printing nozzle is sent by the ink droplet detection equipment when detecting that the parameters of the abnormal ink droplet do not belong to a preset parameter range before the ink droplet sprayed by the printing nozzle falls on the sample substrate, wherein the preset parameters comprise ink droplet volume, ink ejection amount, ink droplet ejection speed, ejection power and ink droplet ejection angle, and when any one of the preset parameters does not belong to the preset parameter range, the ink droplet is abnormal;
acquiring target position information of abnormal ink drops falling on a substrate, which is sent by ink drop detection equipment; the substrate is a transparent substrate or a semitransparent substrate;
determining an abnormal printing nozzle which ejects the abnormal ink drop based on the target position information;
and marking the abnormal printing spray head as a printing spray head which prohibits continuously spraying ink to the substrate.
2. A print control method in a printing process according to claim 1, wherein said printing head has a head number, and said determining an abnormal printing head which ejects said abnormal ink droplet based on said target position information includes:
and determining the nozzle number of the abnormal printing nozzle which ejects the abnormal ink drop according to the preset corresponding relation among the target position information, the position information of the ink drops ejected by all the printing nozzles falling on the substrate and the nozzle number.
3. The printing control method in the printing process according to claim 1, wherein after acquiring the target position information that the abnormal ink droplet sent by the droplet detecting device lands on the substrate, further comprising:
and controlling all the printing nozzles to stop jetting ink to the substrate, marking and storing the target position information.
4. A print control method in a printing process according to claim 3, wherein after marking the abnormal print head as a print head that prohibits continuing ink ejection to the substrate, further comprising:
calculating the number of available printing nozzles based on the total number of the printing nozzles and the number of the abnormal printing nozzles;
and replanning a printing path based on the position information, the residual area to be printed in the substrate and the number of the available printing spray heads, and continuing printing according to the printing path.
5. A print control apparatus characterized by comprising:
the detection unit is used for acquiring information of an abnormal printing nozzle which ejects abnormal ink drops and is sent by the ink drop detection equipment, and marking the abnormal printing nozzle as a printing nozzle which prohibits ink from being continuously jetted to the substrate; the information of the abnormal printing nozzle is sent by the ink droplet detection equipment when detecting that the parameters of the abnormal ink droplet do not belong to a preset parameter range before the ink droplet sprayed by the printing nozzle falls on the sample substrate, wherein the preset parameters comprise ink droplet volume, ink ejection amount, ink droplet ejection speed, ejection power and ink droplet ejection angle, and when any one of the preset parameters does not belong to the preset parameter range, the ink droplet is abnormal;
the acquisition unit is used for acquiring target position information of the abnormal ink drops falling on the substrate sent by the ink drop detection equipment; the target position information is sent by the ink droplet detection equipment when detecting that the position of the ink droplet sprayed by the printing nozzle on the substrate is deviated; the substrate is a transparent substrate or a semitransparent substrate;
a determination unit configured to determine an abnormal printing head that ejects the abnormal ink droplet based on the target position information;
and the marking unit is used for marking the abnormal printing spray head as the printing spray head which prohibits continuing to spray ink to the substrate.
6. The print control apparatus according to claim 5, wherein the print head has a head number, and the determination unit is specifically configured to:
and determining the nozzle number of the abnormal printing nozzle which ejects the abnormal ink drop according to the preset corresponding relation among the target position information, the position information of the ink drops ejected by all the printing nozzles falling on the substrate and the nozzle number.
7. The print control apparatus according to claim 5, wherein said apparatus further comprises:
a calculating unit, configured to calculate the number of available printing nozzles based on the total number of printing nozzles and the number of abnormal printing nozzles;
and the planning unit is used for re-planning a printing path based on the position information, the residual area to be printed in the substrate and the number of the available printing spray heads, and continuing printing according to the printing path.
8. A print control apparatus comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that the processor implements the steps of the method according to any one of claims 1 to 4 when executing the computer program.
9. A computer-readable storage medium, in which a computer program is stored which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 4.
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| PCT/CN2019/108665 WO2020134262A1 (en) | 2018-12-28 | 2019-09-27 | Method, apparatus and device for printing control in printing process, and storage medium |
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| CN115366539B (en) * | 2021-09-23 | 2024-01-23 | 广东聚华印刷显示技术有限公司 | Ink jet printing compensation method and ink jet printing control method |
| CN113959350B (en) * | 2021-11-03 | 2023-11-28 | Tcl华星光电技术有限公司 | Ink jet printing detection system and detection method |
| CN114523764B (en) * | 2022-03-03 | 2023-05-02 | 深圳市华星光电半导体显示技术有限公司 | Ink-jet printing device and printing method thereof |
| CN115107371B (en) * | 2022-06-28 | 2023-07-25 | 昇捷丰标识科技(厦门)有限公司 | Control method and system for multi-equipment combined jet printing |
| CN116061583B (en) * | 2023-02-03 | 2023-06-20 | 季华实验室 | OLED (organic light emitting diode) ink-jet printing data processing and controlling method |
| CN116329043B (en) * | 2023-04-19 | 2024-05-14 | 一汽丰田汽车有限公司 | Bumper spraying method and device, electronic equipment and storage medium |
| CN116691203B (en) * | 2023-08-08 | 2023-10-20 | 武汉国创科光电装备有限公司 | Ink-jet printing process method and system for display device and display device |
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