CN115593115B - Printing nozzle bubble discharge method and device and computer readable storage medium - Google Patents
Printing nozzle bubble discharge method and device and computer readable storage medium Download PDFInfo
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- CN115593115B CN115593115B CN202211496380.3A CN202211496380A CN115593115B CN 115593115 B CN115593115 B CN 115593115B CN 202211496380 A CN202211496380 A CN 202211496380A CN 115593115 B CN115593115 B CN 115593115B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/17—Ink jet characterised by ink handling
- B41J2/19—Ink jet characterised by ink handling for removing air bubbles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/135—Nozzles
- B41J2/14—Structure thereof only for on-demand ink jet heads
- B41J2/14201—Structure of print heads with piezoelectric elements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/135—Nozzles
- B41J2/165—Preventing or detecting of nozzle clogging, e.g. cleaning, capping or moistening for nozzles
Abstract
The invention provides a printing nozzle bubble discharge method and device and a computer readable storage medium, and relates to the technical field of OLED printing, wherein the printing nozzle bubble discharge method comprises the steps of defining the state of bubbles in a nozzle; preprocessing the bubble state, and acquiring a preset printing parameter and a preset bubble discharging parameter corresponding to the bubble state; mapping preset printing parameters, preset bubble discharge parameters and bubble states one by one and storing the mapping in a database; detecting a first printing parameter of the nozzle; determining a bubble state according to the first printing parameter and a preset printing parameter; determining bubble discharge parameters of the nozzle according to the bubble state and preset bubble discharge parameters; controlling the nozzle to discharge bubbles according to the bubble discharge parameters. According to the technical scheme, the bubble state is defined and preprocessed to generate the database, when the nozzle is subjected to bubble discharge, only the first printing parameter of the nozzle needs to be detected, the bubble discharge parameter of the nozzle is determined, and the nozzle is controlled to discharge bubbles according to the bubble discharge parameter. The bubble discharging efficiency is improved.
Description
Technical Field
The invention relates to the technical field of OLED printing, in particular to a method and a device for discharging bubbles of a printing nozzle and a computer readable storage medium.
Background
The liquid in the pipeline is easy to generate bubbles under the back-and-forth impact, and meanwhile, gas dissolved in the liquid can overflow along with the pressure change to generate bubbles. The presence of air bubbles is disadvantageous in some conditions. In the printing display field, high accuracy OLED prints the shower nozzle and is distributing thousands of nozzles and print, and the existence of bubble can lead to micron order size's nozzle to be stopped up to unable normal printing reduces the printing efficiency who prints the shower nozzle, or because of the existence of bubble causes the nozzle to appear speed deviation when spouting, the influence prints the printing precision of shower nozzle. Therefore, the discharge of air bubbles from the liquid pipe connecting the heads and the nozzles of the heads is important for the printing display device.
In the prior art, at present, the bubbles in the high-precision OLED printing nozzle are displayed by printing, a liquid inlet pipe of the nozzle is mainly connected by manual high-frequency extrusion to discharge most of the bubbles, and the residual bubbles are discharged through long-time circulation of liquid in the nozzle. Because the shower nozzle is sealed in the glove box during printing, therefore manual extrusion is extremely inconvenient, implements the difficulty, and is inefficient, needs manual extrusion half an hour and above to have the effect, and long-time high frequency is extruded hard and is very easily caused the operator hand discomfort, and long-term manual extrusion leads to the waste of ink. Meanwhile, the time consumption is too long through the cyclic removal method, and the efficiency is not high.
Disclosure of Invention
The invention mainly aims to provide a method and a device for discharging bubbles of a printing nozzle and a computer readable storage medium, and aims to solve the technical problems that the bubble discharging operation of the printing nozzle is complex, the real-time operation is difficult and the bubble discharging efficiency is low in the prior art.
In order to achieve the above object, the present invention provides a method for discharging bubbles from a print head, the print head having a nozzle thereon, the method comprising:
defining a bubble state within the nozzle;
preprocessing the bubble state, and acquiring a preset printing parameter and a preset bubble discharging parameter corresponding to the bubble state;
mapping the preset printing parameters, the preset bubble discharge parameters and the bubble states one by one and storing the mapping in a database;
detecting a first printing parameter of the nozzle;
determining the bubble state according to the first printing parameter and the preset printing parameter;
determining the bubble discharge parameters of the nozzle according to the bubble state and the preset bubble discharge parameters;
and controlling the nozzle to carry out bubble discharge according to the bubble discharge parameters.
Optionally, the number of the nozzles is multiple, and the step of determining the bubble discharge parameter of the nozzle according to the bubble state and the preset bubble discharge parameter includes:
acquiring the bubble states of all the nozzles;
classifying according to the bubble state corresponding to the nozzle;
and determining the bubble discharge parameters of the nozzles of the same type according to the bubble state and the preset bubble discharge parameters.
Optionally, the step of defining the bubble state within the nozzle comprises:
providing simulation parameters of the number, the position and the size of the bubbles;
and determining the bubble state according to the number of the bubbles, the positions of the bubbles and the sizes of the bubbles.
Optionally, the step of preprocessing the bubble state and acquiring a preset printing parameter and a preset bubble discharging parameter corresponding to the bubble state includes:
carrying out fluid simulation analysis on the nozzle according to the bubble state;
and acquiring preset printing parameters and preset bubble discharge parameters corresponding to the bubble states according to the simulation analysis result.
Optionally, the step of determining the bubble state according to the first printing parameter and the preset printing parameter includes:
searching a database for the preset printing parameters matched with the first printing parameters;
and acquiring the bubble state mapped with the preset printing parameters.
Optionally, the first printing parameters comprise outlet flow rate information and outlet pressure information of the nozzle.
Optionally, after the step of controlling the nozzle to perform bubble discharge with the bubble discharge parameter, the method further includes:
detecting a second printing parameter of the nozzle;
acquiring standard printing parameters of the nozzle;
judging whether the nozzle normally discharges bubbles according to the second printing parameters and the standard printing parameters;
and when the nozzles do not normally discharge bubbles, executing the step of detecting the first printing parameters of the nozzles.
In addition, in order to solve the above problems, the present invention further provides a bubble discharging device for a print head, including: nozzle, memory, controller and store on the memory and can print shower nozzle row bubble procedure of operation on the controller, wherein:
the nozzle is in signal connection with the controller;
when being executed by the controller, the printing nozzle bubble discharge program realizes the steps of the printing nozzle bubble discharge method.
Optionally, the nozzle has an ink channel therein and a piezoelectric ceramic disposed on the ink channel, the piezoelectric ceramic being electrically connected to the controller.
In addition, in order to solve the above problem, the present invention further provides a computer-readable storage medium, wherein a print head bubble discharge program is stored on the computer-readable storage medium, and when executed by a controller, the print head bubble discharge program implements the steps of the print head bubble discharge method as described above.
According to the technical scheme, the bubble state is defined and preprocessed to generate the database, when the nozzle is subjected to bubble discharge, the bubble discharge parameter of the nozzle can be determined only by detecting the first printing parameter of the nozzle, and the nozzle is controlled to discharge bubbles according to the bubble discharge parameter. The automation degree of the foam discharging is improved, and the foam discharging efficiency is improved.
Drawings
In order to more clearly illustrate the embodiments or technical solutions of the present invention, the drawings used in the embodiments or technical solutions of the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic flow chart illustrating a bubble discharge method of a print head according to a first embodiment of the present invention;
FIG. 2 is a schematic flow chart illustrating a bubble discharge method of a print head according to a second embodiment of the present invention;
FIG. 3 is a schematic flow chart illustrating a bubble discharge method of a print head according to a third embodiment of the present invention;
FIG. 4 is a schematic flow chart illustrating a bubble discharge method of a print head according to a fourth embodiment of the present invention;
FIG. 5 is a schematic flow chart illustrating a fifth embodiment of a bubble discharge method of a print head according to the present invention;
fig. 6 is a schematic structural diagram of a bubble discharge device of a print head according to the present invention.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 10 | Nozzle with a |
11 | |
| 12 | Ink channel |
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all the directional indicators (such as upper, lower, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, the technical solutions in the embodiments of the present invention may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination of technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The invention provides a printing nozzle bubble discharge method, and please refer to fig. 1, wherein fig. 1 is a schematic flow chart of a first embodiment of the printing nozzle bubble discharge method, and the printing nozzle bubble discharge method comprises the following steps:
step S10: defining a bubble state within the nozzle;
step S20: preprocessing the bubble state, and acquiring a preset printing parameter and a preset bubble discharging parameter corresponding to the bubble state;
step S30: mapping the preset printing parameters, the preset bubble discharge parameters and the bubble states one by one and storing the mapping in a database;
step S40: detecting a first printing parameter of the nozzle 10;
step S50: determining the bubble state according to the first printing parameter and the preset printing parameter;
step S60: determining the bubble discharge parameters of the nozzle 10 according to the bubble state and the preset bubble discharge parameters;
step S70: controlling the nozzle 10 to discharge bubbles according to the bubble discharge parameters.
The nozzle 10 has an ink channel 12 therein, and bubbles can be attached to various positions of the ink channel 12, and the number and size of the attached bubbles are different. Referring to fig. 6, piezoelectric ceramics 11 are provided in the ink channels 12, and a plurality of bubbles (such as bubbles a, bubbles b, and bubbles c) having different sizes are attached to the different ink channels 12. By controlling the shape and size of the piezoelectric ceramic 11, a pressure F is generated toward the ink channel 12 side, and bubbles are pushed out from the ink channel 12.
Since the air bubbles are hidden in the micro-or nano-scale ink channels 12 that cannot be observed, the state of the air bubbles in the ink channels 12, that is, the positions where the air bubbles are attached, the number of air bubbles, the size of the air bubbles, and the like cannot be directly confirmed. Therefore, it is necessary for the system to learn the influence of various bubble states, that is, the positions where bubbles are attached, the number of bubbles, the size of bubbles, and other factors on the printing parameters of the nozzle 10; and the bubble discharge parameters for extruding the bubbles out of the ink channel 12 under different bubble states; namely, the bubble state is preprocessed, so that the preset printing parameters and the preset bubble discharging parameters corresponding to the bubble state are obtained.
When discharging bubbles, only the first printing parameters of the nozzle 10 need to be detected, and the corresponding bubble state under the first printing parameters and the bubble discharge parameters needed to be adopted under the bubble state can be determined by combining the preset printing parameters and the preset bubble discharge parameters. Specifically, the first printing parameters include outlet flow rate information and outlet pressure information of the nozzle 10. The bubble discharge parameter is a squeeze pressure waveform (period, amplitude, phase, or the like), and for example, a trapezoidal signal, a sine signal, a cosine signal, or the like can be used to squeeze bubbles at different pressures by controlling the shape and size change of the piezoelectric ceramic 11 by the squeeze pressure waveform.
According to the technical scheme, the bubble state is defined and preprocessed to generate the database, when the nozzle 10 is subjected to bubble discharge, the bubble discharge parameters of the nozzle 10 can be determined only by detecting the first printing parameters of the nozzle 10, and the nozzle 10 is controlled to discharge bubbles according to the bubble discharge parameters. The automation degree of the foam discharging is improved, and the foam discharging efficiency is improved.
Further, the number of the nozzles 10 is plural, please refer to fig. 2, fig. 2 is a schematic flow chart of a second embodiment of the method for discharging bubbles of a print head according to the present invention, and step S60 includes:
step S61: acquiring the bubble states of all the nozzles 10;
step S62: classifying according to the bubble state corresponding to the nozzle 10;
step S63: and determining the bubble discharge parameters of the nozzles 10 of the same type according to the bubble state and the preset bubble discharge parameters.
Generally, a printing apparatus has a plurality of nozzles 10, and referring to fig. 6, since all the nozzles 10 are uniformly controlled in pressure, that is, a discharge parameter controls all the nozzles 10, but the nozzles 10 can be independently selected to be controlled or not.
Therefore, in the present embodiment, in order to improve the bubble discharge efficiency, all the nozzles 10 are classified after the bubble states of all the nozzles 10 are detected. Such as nozzles 10 of the same bubble state.
After all the categories of the nozzles 10 are obtained, each category of the bubble state corresponds to one bubble discharge parameter. Therefore, all the bubble discharging operations of the nozzles 10 can be completed only by sequentially discharging bubbles according to the preset sequence and the corresponding bubble discharging parameters according to the types of the nozzles 10.
In this embodiment, the deep learning mode may be performed by the system, so that the nozzles 10 are quickly classified according to the bubble state in the actual bubble discharge according to the deep learning, and the corresponding bubble discharge parameters, that is, the pressure waveforms, are output for bubble discharge.
According to the invention, the state of the bubbles in the nozzle 10 can be measured and judged by the outlet pressure, the flow rate and the like of the nozzle 10 finally through a mode of combining fluid simulation analysis and deep learning.
Further, referring to fig. 3, fig. 3 is a schematic flow chart of a third embodiment of a method for discharging bubbles from a print head according to the present invention, and step S10 includes:
step S11: providing simulation parameters of the number, the position and the size of the bubbles;
step S12: and determining the bubble state according to the number of the bubbles, the positions of the bubbles and the sizes of the bubbles.
Step S20 includes:
step S21: performing fluid simulation analysis on the nozzle 10 according to the bubble state;
step S22: and acquiring preset printing parameters and preset bubble discharge parameters corresponding to the bubble states according to the simulation analysis result.
The system in this embodiment learns in a fluid simulation manner. Firstly, defining the bubble state in simulation software, namely taking the bubble state as a variable, obtaining outlet flow rate information and outlet pressure information corresponding to the nozzle 10 in various bubble states through simulation, and taking the outlet flow rate information and the outlet pressure information as simulated dependent variables, namely preset printing information.
Meanwhile, the bubble state is taken as a variable, simulation is continued, and a pressure waveform required by discharging the current bubble state, namely preset bubble discharge parameters, is obtained.
Through simulation learning, each bubble state corresponds to a preset printing parameter and a preset bubble discharge parameter. And mapping and associating the bubble state with the corresponding preset printing parameters and preset bubble discharge parameters one by one, and storing the bubble state into a database.
The bubble state includes the number of bubbles, the position of the bubbles, and the size of the bubbles, and the number of bubbles, the position of the bubbles, and the size of the bubbles existing in the ink channel 12 may be first simulated before the simulation is performed. To facilitate the analytical calculations, the number of bubbles, the position of the bubbles and the size of the bubbles may be graded. For example, the number of bubbles is more than a first predetermined number (e.g., 4), less than a second predetermined number (e.g., 2), and is between the first predetermined number and the second predetermined number. Similarly, the position of the bubble can be graded according to the distance from the outlet close to the nozzle 10, and the size of the bubble can be graded according to the size of the bubble. Therefore, the calculation efficiency is improved, and the bubble discharge efficiency is further improved.
Further, referring to fig. 4, fig. 4 is a schematic flowchart illustrating a fourth embodiment of a method for discharging bubbles from a print head according to the present invention, and step S50 includes:
step S51: searching a database for the preset printing parameters matched with the first printing parameters;
step S52: and acquiring the bubble state mapped with the preset printing parameters.
After the first printing parameters are detected, traversing the database, searching for preset printing parameters which are matched with or identical to the first printing parameters, and quickly determining the type of the nozzle 10 and the pressure waveform required by bubble discharge according to the preset bubble state and the preset bubble discharge parameters associated with the preset printing parameters.
Further, referring to fig. 5, fig. 5 is a flowchart illustrating a fifth embodiment of a method for discharging bubbles from a print head according to the present invention, and after step S70, the method further includes:
step S80: detecting a second printing parameter of said nozzle 10;
step S90: acquiring standard printing parameters of the nozzle 10;
step S100: judging whether the nozzle 10 normally discharges bubbles according to the second printing parameters and the standard printing parameters;
step S110: when the nozzle 10 does not normally discharge bubbles, step S40 is performed.
In practice, when the nozzle 10 discharges bubbles, there may be a case that small bubbles in the nozzle 10 are coalesced to form large bubbles, or the bubbles are not normally discharged, thereby causing the discharge squeezing pressure to fail. Therefore, in the present embodiment, the outlet flow rate and the outlet pressure of the nozzle 10 under normal conditions, that is, the standard printing parameters, can be detected.
After the bubble is discharged, the outlet flow rate and the outlet pressure of the nozzle 10, i.e., the second printing parameter, are detected for the second time. By comparing the second printing parameters with the standard printing parameters, it is determined whether the nozzle 10 has finished discharging bubbles.
Specifically, when the second printing parameter is matched with the standard printing parameter, it indicates that the outlet pressure and the outlet flow rate of the nozzle 10 are normal, that is, the bubble removal is successful; when the second printing parameter is greatly different from the standard printing parameter, it indicates that the outlet pressure and the outlet flow rate of the nozzle 10 are abnormal, i.e., the bubble discharge fails.
When the bubble discharging of the nozzle 10 fails, the step S40 is re-executed to re-perform the bubble discharging operation on the nozzle 10. The reliability of the printing nozzle bubble discharge method is further improved.
In addition, in order to solve the above problems, the present invention further provides a bubble discharging device for a print head, including: nozzle 10, memory, controller and print head bubble discharging program stored on the memory and operable on the controller, wherein:
the nozzle 10 is electrically connected with the controller;
and when being executed by the controller, the printing nozzle bubble discharge program realizes the steps of the printing nozzle bubble discharge method.
The nozzle 10 has an ink channel 12 therein, and bubbles can be attached to the ink channel 12 at various positions, and the number and size of the attached bubbles are different. Referring to fig. 6, piezoelectric ceramics 11 are provided in the ink channels 12, and a plurality of bubbles (such as bubbles a, bubbles b, and bubbles c) having different sizes are attached to the different ink channels 12. By controlling the shape and size of the piezoelectric ceramic 11, air bubbles are pushed out from the ink channel 12.
Since the air bubbles are hidden in the micro-or nano-scale ink channels 12 that cannot be observed, the state of the air bubbles in the ink channels 12, that is, the positions where the air bubbles are attached, the number of air bubbles, the size of the air bubbles, and the like cannot be directly confirmed. Therefore, it is necessary for the system to learn the influence of various bubble states, that is, the positions where bubbles are attached, the number of bubbles, the size of bubbles, and other factors on the printing parameters of the nozzle 10; and the bubble discharge parameters for extruding the bubbles out of the ink channel 12 under different bubble states; namely, the bubble state is preprocessed, so that preset printing parameters and preset bubble discharging parameters corresponding to the bubble state are obtained.
When discharging bubbles, only the first printing parameters of the nozzle 10 need to be detected, and the corresponding bubble state under the first printing parameters and the bubble discharge parameters needed to be adopted under the bubble state can be determined by combining the preset printing parameters and the preset bubble discharge parameters. Specifically, the first printing parameters include outlet flow rate information and outlet pressure information of the nozzle 10. The bubble discharge parameter is a pressure waveform (period, amplitude, phase, etc.), and for example, a sine signal or a cosine signal can be used to control the shape and size of the piezoelectric ceramic 11 to be changed by the pressure waveform, thereby pressing bubbles at different pressures.
According to the technical scheme, the bubble state is defined and preprocessed to generate the database, when the nozzle 10 is subjected to bubble discharge, the bubble discharge parameters of the nozzle 10 can be determined only by detecting the first printing parameters of the nozzle 10, and the nozzle 10 is controlled to discharge bubbles according to the bubble discharge parameters. The automation degree of bubble discharging is improved, and the bubble discharging efficiency is improved.
In addition, in order to solve the above problem, the present invention further provides a computer-readable storage medium, on which a print head bubble discharge program is stored, and the print head bubble discharge program, when executed by a controller, implements the steps of the print head bubble discharge method as described above.
According to the technical scheme, the bubble state is defined and preprocessed to generate the database, when the nozzle 10 is subjected to bubble discharge, the bubble discharge parameter of the nozzle 10 can be determined only by detecting the first printing parameter of the nozzle 10, and the nozzle 10 is controlled to discharge bubbles according to the bubble discharge parameter. The automation degree of the foam discharging is improved, and the foam discharging efficiency is improved.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (9)
1. A bubble discharge method for a printing nozzle with a nozzle is characterized by comprising the following steps:
defining a bubble state within the nozzle;
preprocessing the bubble state, and acquiring a preset printing parameter and a preset bubble discharging parameter corresponding to the bubble state;
mapping the preset printing parameters, the preset bubble discharge parameters and the bubble states one by one and storing the mapping in a database;
detecting a first printing parameter of the nozzle;
determining the bubble state according to the first printing parameter and the preset printing parameter;
determining the bubble discharge parameters of the nozzle according to the bubble state and the preset bubble discharge parameters;
controlling the nozzle to carry out bubble discharge according to the bubble discharge parameters;
the first printing parameters are outlet flow speed information and outlet pressure information of the nozzle before bubble discharge; the bubble discharge parameter is an extrusion pressure waveform to control different pressures to extrude bubbles; the bubble state includes a bubble number, a bubble location, and a bubble size.
2. The print head bubble discharge method according to claim 1, wherein the number of the nozzles is plural, and the step of determining the bubble discharge parameters of the nozzles according to the bubble state and the preset bubble discharge parameters comprises:
acquiring the bubble states of all the nozzles;
classifying according to the bubble state corresponding to the nozzle;
and determining the bubble discharge parameters of the nozzles of the same type according to the bubble state and the preset bubble discharge parameters.
3. The print head bubble discharge method of claim 1, wherein the step of defining the bubble state within the nozzle comprises:
providing simulation parameters of the number, the position and the size of the bubbles;
and determining the bubble state according to the number of the bubbles, the positions of the bubbles and the sizes of the bubbles.
4. The method for discharging bubbles of a printing nozzle according to claim 1, wherein the step of preprocessing the bubble state and acquiring preset printing parameters and preset bubble discharge parameters corresponding to the bubble state comprises the steps of:
carrying out fluid simulation analysis on the nozzle according to the bubble state;
and acquiring preset printing parameters and preset bubble discharge parameters corresponding to the bubble states according to the simulation analysis result.
5. The print head bubble discharge method of claim 1, wherein the step of determining the bubble status according to the first print parameter and the preset print parameter comprises:
searching a database for the preset printing parameters matched with the first printing parameters;
and acquiring the bubble state mapped with the preset printing parameters.
6. The print head bubbling method of any one of claims 1~5, wherein after the step of controlling the nozzles to bubble with the bubbling parameters, further comprising:
detecting a second printing parameter of the nozzle;
acquiring standard printing parameters of the nozzle;
judging whether the nozzle normally discharges bubbles according to the second printing parameters and the standard printing parameters;
when the nozzles do not normally discharge bubbles, executing a step of detecting first printing parameters of the nozzles;
the second printing parameters are the outlet flow rate and the outlet pressure of the nozzle after bubble discharge.
7. A print head bubble discharge device, characterized in that, print head bubble discharge device includes: nozzle, memory, controller and the printing shower nozzle who stores on the memory and can be operated on the controller arrange bubble program, wherein:
the nozzle is in signal connection with the controller;
the print head bubble discharge program when executed by the controller implements the steps of the print head bubble discharge method according to any one of claims 1 to 6.
8. The print head bubble discharge apparatus of claim 7, wherein the nozzle has an ink channel therein and a piezoelectric ceramic disposed on the ink channel, the piezoelectric ceramic being electrically connected to the controller.
9. A computer-readable storage medium, wherein the computer-readable storage medium has stored thereon a print head bubble discharging program, which when executed by a controller, implements the steps of the print head bubble discharging method according to any one of claims 1 to 6.
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| JP6597777B2 (en) * | 2015-05-25 | 2019-10-30 | コニカミノルタ株式会社 | Inkjet head, bubble removal method for inkjet head, and inkjet recording apparatus |
| CN109823049B (en) * | 2018-12-26 | 2019-12-24 | 华中科技大学 | Multi-target jet frequency control method and device for jet printing liquid drops |
| JP7246216B2 (en) * | 2019-03-19 | 2023-03-27 | エスアイアイ・プリンテック株式会社 | LIQUID JET HEAD AND LIQUID JET RECORDING APPARATUS |
| CN111070900B (en) * | 2020-01-17 | 2021-01-29 | 福州大学 | Piezoelectric ink-jet printing device for removing printing ink bubbles and control method thereof |
| CN111645425B (en) * | 2020-06-10 | 2021-07-06 | Tcl华星光电技术有限公司 | Ink jet printing apparatus and bubble discharge method thereof |
| CN215792633U (en) * | 2021-03-12 | 2022-02-11 | 福建华佳彩有限公司 | Ink jet head capable of removing air bubbles |
| CN113635674B (en) * | 2021-09-06 | 2022-09-06 | 南京智能高端装备产业研究院有限公司 | Ink supply system for ceramic ink printing |
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