CN114523764B - Ink-jet printing device and printing method thereof - Google Patents
Ink-jet printing device and printing method thereof Download PDFInfo
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- CN114523764B CN114523764B CN202210202363.8A CN202210202363A CN114523764B CN 114523764 B CN114523764 B CN 114523764B CN 202210202363 A CN202210202363 A CN 202210202363A CN 114523764 B CN114523764 B CN 114523764B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J29/00—Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
- B41J29/38—Drives, motors, controls or automatic cut-off devices for the entire printing mechanism
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
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- Ink Jet (AREA)
Abstract
The embodiment of the invention discloses an ink jet printing device and a printing method thereof, wherein the ink jet printing device comprises a nozzle and a control piece arranged at the nozzle, and the control piece comprises a measuring unit for measuring the actual emergent angle of ink drops sprayed from the nozzle; the judging unit is connected with the measuring unit and is used for judging whether the actual emergent angle is normal or not; and the confirmation unit is connected with the judging unit and is used for forbidding the nozzle with abnormal actual emergent angle of the ejected ink drops when the actual emergent angle is confirmed to be abnormal. By monitoring the actual exit angle of the ink drops ejected from each nozzle in real time, if the actual exit angle is larger than the preset exit angle, the nozzles with abnormal ejected ink drops are forbidden, so that more defective products are avoided, and a large number of bad losses in the production process are prevented.
Description
Technical Field
The invention relates to the field of display panels, in particular to an inkjet printing device and a printing method thereof.
Background
Organic electroluminescent devices (Organic Light Emitting Diode, OLED) are the most promising new display devices in recent years due to their self-luminescence, all-solid state, high contrast, etc. The preparation of OLED devices by vapor deposition equipment is the main stream mode of current production, but the defects of low material utilization rate and poor uniformity of vapor deposition technology have been lacking in effective solutions. The OLED film prepared by the solution method has the advantages of high material utilization rate, low equipment cost and the like, and has obvious advantages.
The solution method includes spin coating, printing, and Printing, in which a solution containing a luminescent (or functional) material is dropped at a predetermined position in the form of tiny droplets (pl level), and then a solvent is evaporated and removed, and only a thin film formed of a solute (luminescent or functional material) is left, which is simply called Ink-Jet Printing (IJP), which is a brand new preparation method, and the basic principle of which is similar to all printers in daily life; compared with the traditional evaporation technology, the technology has the advantages of low cost and full-size production, and the product has the advantages of light weight, flexibility, green environmental protection and the like, so the technology is considered to be the development direction of novel display front technology in the future.
Currently, with respect to IJP devices, at the very heart is a printhead module, which to some extent determines the overall level of development of printing technology. The Nozzle principle commonly used at present is to extrude ink from a Nozzle (Nozzle) by deformation of a piezoelectric ceramic material (PZT), form stable ink droplets and print the ink droplets into pixels (pixels) of a substrate. However, in the actual printing process, the ink drops are often disturbed or splashed due to the characteristics of the ink during the ejection process of the nozzle, that is, satellite points, so that deviation of the dropping route of the ink drops is caused, the ink drops are not dropped according to the expected positions, bad defects are caused on products, and the yield loss of mass production is caused.
Therefore, there is a need to develop a new type of ink jet printing apparatus to solve the technical problem that in the prior art, the ink drops dropped from the nozzles of the ink jet printing apparatus are disturbed to cause deviation of the drop route.
Disclosure of Invention
The embodiment of the invention provides an ink jet printing device, which is used for solving the technical problem that in the prior art, ink drops dropped from nozzles in the ink jet printing device are disturbed to cause deviation of drop dropping routes.
In order to solve the technical problems, the embodiment of the invention discloses the following technical scheme:
in one aspect, an inkjet printing apparatus is provided that includes a nozzle and a control member disposed at the nozzle, the control member including
A measuring unit for measuring an actual exit angle of the ink droplets ejected from the nozzles;
the judging unit is connected with the measuring unit and is used for judging whether the actual emergent angle is normal or not;
and the confirmation unit is connected with the judging unit and is used for forbidding the nozzle with abnormal actual emergent angle of the ejected ink drops when the actual emergent angle is confirmed to be abnormal.
In addition to or in lieu of one or more of the features disclosed above, the measurement unit includes a miniature pulse detection device.
In addition to or in lieu of one or more of the features disclosed above, the miniature pulse detection apparatus comprises a pulse transmitting system and a pulse receiving system.
In addition to or in lieu of one or more of the features disclosed above, the control is disposed around the nozzle.
In addition to or in lieu of one or more of the features disclosed above, the number of nozzles is at least two, each of which is correspondingly provided with the control member.
In addition to or in lieu of one or more of the features disclosed above, the inkjet printing device may further comprise a memory, each of the nozzles being correspondingly provided with the memory, the memory being connected to the control member, the memory having disposed therein a preset exit angle for ink droplets ejected by the nozzle.
In addition to one or more features disclosed above, or alternatively, when an actual exit angle of the ink droplet ejected from the nozzle is greater than the preset exit angle, determining that the actual exit angle is abnormal; and when the actual emergent angle of the ink drops sprayed by the nozzle is smaller than or equal to the preset emergent angle, judging that the actual emergent angle is normal.
Through setting up miniature pulse detection equipment in inkjet printing device's nozzle department, the actual exit angle of every nozzle spun ink droplet of real-time supervision, compare actual exit angle with preset exit angle again, if judge that actual exit angle is greater than preset exit angle, the nozzle of the unusual actual exit angle of the jet ink droplet of forbidden, avoid causing more defective products, the prevention takes place a large amount of bad losses in the production process.
In another aspect, there is further disclosed a printing method of an inkjet printing apparatus including nozzles, the printing method comprising the steps of:
measuring an actual exit angle of ink droplets ejected from the nozzle;
judging whether the actual emergent angle is normal or not;
and when the actual emergent angle is confirmed to be abnormal, disabling the nozzle from which the actual emergent angle of the ink drop is sprayed.
In addition to one or more features disclosed above, or alternatively, the inkjet printing device is provided with a preset exit angle for ink droplets ejected from the nozzles.
In addition to one or more features disclosed above, or alternatively, in the step of determining whether the actual exit angle is normal, when the actual exit angle of the ink droplet ejected from the nozzle is greater than the preset exit angle, determining that the actual exit angle is abnormal; and when the actual emergent angle of the ink drops sprayed by the nozzle is smaller than or equal to the preset emergent angle, judging that the actual emergent angle is normal.
One of the above technical solutions has the following advantages or beneficial effects: through setting up miniature pulse detection equipment in inkjet printing device's nozzle department, the actual exit angle of every nozzle spun ink droplet of real-time supervision, compare actual exit angle with preset exit angle again, if judge that actual exit angle is greater than preset exit angle, the nozzle of the unusual actual exit angle of the jet ink droplet of forbidden, avoid causing more defective products, the prevention takes place a large amount of bad losses in the production process.
Drawings
The technical solution and other advantageous effects of the present invention will be made apparent by the following detailed description of the specific embodiments of the present invention with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of an inkjet printing apparatus according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a control member according to an embodiment of the present invention;
fig. 3 is a flowchart of a printing method of an inkjet printing apparatus according to an embodiment of the present invention.
Description of the drawings:
an inkjet printing device-100;
a main body 1-1; a nozzle-2;
control member-3; a measuring unit-301;
a judgment unit-302; a validation unit-303.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an inkjet printing apparatus according to an embodiment of the present invention, and an inkjet printing apparatus 100 includes a main body 1, a nozzle 2 disposed on the main body, a control member 3 disposed at the nozzle, and a memory (not shown).
The number of nozzles 2 is at least two, each nozzle 2 being provided with a corresponding control 3 and a corresponding memory.
The control member 3 is disposed around the nozzle, and the memory is connected to the control member 3, and a preset exit angle (half of the included angle between two dotted lines as shown in fig. 1) corresponding to the ink droplet ejected from the nozzle 2 is disposed in the memory.
Referring to fig. 2, fig. 2 is a schematic structural diagram of a control member 3 according to an embodiment of the present invention. The control member 3 includes a measuring unit 301, a judging unit 302, and a confirming unit 303. The measurement unit 301 is used to measure the actual exit angle of ink droplets ejected from the nozzles.
In this embodiment, the measuring unit 301 is a micro pulse detecting device. The miniature pulse detection device comprises a pulse emitting system and a pulse receiving system, wherein the pulse emitting system is used for emitting pulses to ink drops ejected by corresponding nozzles, and feeding back the current landing route of the ejected ink drops to the pulse receiving system.
The judging unit 302 is connected to the measuring unit 301 for judging whether the actual exit angle of the ink droplets ejected from the nozzles 2 is normal. When the pulse receiving system receives that the actual emergent angle of the ink drops sprayed by the nozzle 2 is larger than a preset emergent angle, judging that the actual emergent angle is abnormal; when the pulse receiving system receives that the actual emergent angle of the ink drops sprayed by the nozzles 2 is smaller than or equal to the preset emergent angle, the actual emergent angle is judged to be normal.
When the actual emergent angle of the ink drop is larger than the preset emergent angle, the pulse transmitting system immediately feeds back the ink drop to the pulse receiving system. The shorter the drop path of the ink drops deviates from the normal drop path, the shorter the feedback time of the pulse emitting system, as shown in fig. 1, the feedback time of b is smaller than the feedback time of a, and the feedback time of c is equal to the feedback time of a.
The confirmation unit 303 is connected to the determination unit 302, and is configured to disable the nozzle 2 from ejecting the ink droplet when the actual ejection angle is abnormal, so as to prevent occurrence of a large number of adverse losses in the production process.
Through setting up miniature pulse detection equipment in inkjet printing device's nozzle department, the actual exit angle of every nozzle spun ink droplet of real-time supervision, compare actual exit angle with preset exit angle again, if judge to be greater than preset exit angle, forbid the nozzle that the actual exit angle of spun ink droplet is abnormal, avoid causing more defective products, prevent to take place a large amount of bad losses in the production process.
The embodiment also provides a printing method of the inkjet printing device, the inkjet printing device comprises a nozzle, and fig. 3 is a flowchart of the printing method of the inkjet printing device provided by the embodiment of the invention, and the printing method comprises steps 1-3.
Step 1: the actual exit angle of the ink droplets ejected from the nozzles is measured.
Step 2: and judging whether the actual emergent angle is normal.
The ink jet printing device is provided with a preset emergent angle corresponding to ink drops ejected by the nozzles.
When the actual emergent angle of the ink drops sprayed by the nozzle is larger than the preset emergent angle, judging that the actual emergent angle is abnormal; when the actual emergent angle of the ink drops sprayed by the nozzle is smaller than or equal to the preset emergent angle, judging that the actual emergent angle is normal.
Step 3: and when the actual emergent angle is confirmed to be abnormal, disabling the nozzle from which the actual emergent angle of the ink drop is sprayed.
The actual emergent angle of the ink drop sprayed by each nozzle is monitored in real time at the nozzle of the ink-jet printing device, the actual emergent angle is compared with the preset emergent angle, if the actual emergent angle is larger than the preset emergent angle, the nozzle with abnormal actual emergent angle of the sprayed ink drop is forbidden, more defective products are avoided, and a large amount of defective losses are prevented from occurring in the production process.
The above description is made in detail on an inkjet printing apparatus and a printing method thereof provided by the embodiments of the present invention, and specific examples are applied to explain the principles and embodiments of the present invention, and the above description of the embodiments is only for helping to understand the technical solution and core ideas of the present invention; those of ordinary skill in the art will appreciate that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (7)
1. An inkjet printing apparatus comprising a nozzle and a control member disposed at the nozzle, the control member comprising
A measuring unit for measuring an actual exit angle of the ink droplets ejected from the nozzles;
the judging unit is connected with the measuring unit and is used for judging whether the actual emergent angle is normal or not;
the confirming unit is connected with the judging unit and is used for forbidding the nozzle with abnormal actual emergent angle of the ejected ink drops when the actual emergent angle is confirmed to be abnormal;
wherein each nozzle is correspondingly provided with the control piece, and the control piece is arranged around the nozzle; the measuring unit comprises a miniature pulse detecting device, wherein the miniature pulse detecting device comprises a pulse emitting system and a pulse receiving system, the pulse emitting system emits pulses to ink drops ejected from the corresponding nozzles, and the current ejected ink drop dropping route is fed back to the pulse receiving system.
2. The inkjet printing apparatus of claim 1 wherein the number of nozzles is at least two.
3. The inkjet printing apparatus of claim 2 further comprising a memory, wherein each of the nozzles is provided with the memory, wherein the memory is connected to the control member, and wherein the memory is provided with a predetermined exit angle corresponding to the ink droplets ejected from the nozzles.
4. The inkjet printing apparatus according to claim 3 wherein when the actual exit angle of the ink droplets ejected from the nozzles is greater than the preset exit angle, the actual exit angle is judged to be abnormal; and when the actual emergent angle of the ink drops sprayed by the nozzle is smaller than or equal to the preset emergent angle, judging that the actual emergent angle is normal.
5. A printing method of an inkjet printing apparatus according to claim 1 wherein the inkjet printing apparatus includes nozzles, the printing method comprising the steps of:
measuring an actual exit angle of ink droplets ejected from the nozzle;
judging whether the actual emergent angle is normal or not;
and when the actual emergent angle is confirmed to be abnormal, disabling the nozzle from which the actual emergent angle of the ink drop is sprayed.
6. The printing method according to claim 5, wherein the inkjet printing apparatus is provided with a preset exit angle corresponding to the ink droplets ejected from the nozzles.
7. The printing method according to claim 6, wherein in the step of judging whether the actual exit angle is normal, when the actual exit angle of the ink droplet ejected from the nozzle is larger than the preset exit angle, the actual exit angle is judged to be abnormal; and when the actual emergent angle of the ink drops sprayed by the nozzle is smaller than or equal to the preset emergent angle, judging that the actual emergent angle is normal.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210202363.8A CN114523764B (en) | 2022-03-03 | 2022-03-03 | Ink-jet printing device and printing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210202363.8A CN114523764B (en) | 2022-03-03 | 2022-03-03 | Ink-jet printing device and printing method thereof |
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| CN114523764A CN114523764A (en) | 2022-05-24 |
| CN114523764B true CN114523764B (en) | 2023-05-02 |
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| JP3813762B2 (en) * | 1999-05-18 | 2006-08-23 | ローム株式会社 | Ejected ink detection device |
| WO2006036023A1 (en) * | 2004-09-30 | 2006-04-06 | Seiko Epson Corporation | Image forming apparatus, image forming program, image forming method, data generating apparatus, data generating program, data generating method, and recording medium with the program recorded therein |
| JP4645811B2 (en) * | 2005-01-14 | 2011-03-09 | 富士フイルム株式会社 | Liquid ejection apparatus, image forming apparatus, and ejection detection method |
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| JP2010058442A (en) * | 2008-09-05 | 2010-03-18 | Ricoh Co Ltd | Image forming system, printing method, and program |
| US9527276B2 (en) * | 2013-01-23 | 2016-12-27 | Hewlett-Packard Development Company, L.P. | Testing a printhead |
| CN107328359B (en) * | 2017-07-03 | 2021-12-03 | 京东方科技集团股份有限公司 | Device and method for detecting ink drops |
| CN207901880U (en) * | 2018-02-28 | 2018-09-25 | 森大（深圳）技术有限公司 | Nozzle detecting device and ink-jet printer with nozzle detecting device |
| CN111376587B (en) * | 2018-12-28 | 2022-02-15 | Tcl科技集团股份有限公司 | Printing control method, equipment and storage medium in printing process |
| CN110293762B (en) * | 2019-06-20 | 2021-02-26 | 森大（深圳）技术有限公司 | Method and device for dynamically detecting abnormal nozzle in printing process and storage medium |
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| CN112319051B (en) * | 2019-12-23 | 2022-03-01 | 广东聚华印刷显示技术有限公司 | Ink jet printing head mechanism, ink jet printing apparatus, and ink droplet ejection angle correction method |
| CN112757796B (en) * | 2020-12-30 | 2022-04-08 | 华中科技大学 | System and method for detecting quality of display device in whole spray printing manufacturing process |
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| CN1763605A (en) * | 2004-10-05 | 2006-04-26 | 应用材料股份有限公司 | Droplet visualization of inkjetting |
| CN103029438A (en) * | 2011-09-30 | 2013-04-10 | 富士胶片株式会社 | Inkjet recording apparatus and method, and abnormal nozzle determination method |
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