CN109980084A - Inkjet print head and ink jet printing device - Google Patents
Inkjet print head and ink jet printing device Download PDFInfo
- Publication number
- CN109980084A CN109980084A CN201910281214.3A CN201910281214A CN109980084A CN 109980084 A CN109980084 A CN 109980084A CN 201910281214 A CN201910281214 A CN 201910281214A CN 109980084 A CN109980084 A CN 109980084A
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- China
- Prior art keywords
- ink feed
- ink
- feed groove
- print head
- inkjet print
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Classifications
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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
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/84—Passivation; Containers; Encapsulations
- H10K50/844—Encapsulations
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Particle Formation And Scattering Control In Inkjet Printers (AREA)
Abstract
The present invention provides a kind of inkjet print head and ink jet printing device, wherein inkjet print head includes: public ink tank, the multiple ink feed grooves being connected to the public ink tank and corresponds the multiple nozzles being connected to the multiple ink feed groove；The notch of the multiple ink feed groove is covered with piezoelectric material layer, and the piezoelectric material layer, which generates deformation, can change the capacity of ink feed groove；It is set in each ink feed groove, positioned at the current limiting component of ink feed groove and the public ink tank connectivity part, for blocking the connection between the second ink feed groove and the public ink tank when deformation occurs in the corresponding piezoelectric material region of the first ink feed groove, wherein, the second ink feed groove is the ink feed groove adjacent with the first ink feed groove.Inkjet print head provided by the invention and ink jet printing device, it can be ensured that the print quality of inkjet print head.
Description
Technical field
The present invention relates to inkjet printing technology field more particularly to a kind of inkjet print head and ink jet printing devices.
Background technique
In currently display manufacturing field, for the complexity for further increasing stock utilization, reducing production technology, ink-jet
Printing technique is applied in the preparation process of flat-panel monitor, such as: inkjet printing technology can be applied to flexible OLED film
In packaging technology, it is uniformly to be deposited on organic material on OLED luminescent device in a manner of ink-jet.
The basic functional principle of inkjet printing: first generating small ink droplet, recycles nozzle that tiny ink droplet is directed to setting
Position on, ink droplet is smaller, and the position of drippage is more accurate, and the resolution ratio of printing is higher.Due to inkjet printing to ink ejection amount and
Ink jetting position required precision is very high, and common inkjet print head is all made of many tiny nozzles.
Inkjet print head in the prior art is as shown in Figure 1, include public ink tank 110, multiple ink feed grooves 120 and multiple
Nozzle 130, one end of multiple ink feed grooves 120 and multiple nozzles 130 one-to-one correspondence are connected to, multiple ink feed grooves 120 it is another
End is connected to public ink tank 110；The notch of ink feed groove 120 is covered with the piezoelectric material of flood, by controlling piezoelectric material
Deformation can change the volume of ink feed groove 120, and then realize and squeeze out of ink and dilatation blotting.However, in an ink feed ditch
When the corresponding piezoelectric material deformation of slot, the piezoelectric material of deformation can make the corresponding piezoelectricity of ink feed groove for closing on the ink feed groove
Opposite deformation occurs for material, and ink-jet is caused to harass, this, which is harassed, can make to close on the ink droplet that the nozzle of ink feed groove connection sprays
Volume generates deviation, reduces print quality.
Summary of the invention
The embodiment of the present invention provides a kind of inkjet print head and ink jet printing device, is beaten with solving ink-jet in the prior art
The problem of there is ink-jet and harasses in print head, reduction print quality.
It is as follows that in order to solve the above technical problem, the present invention provides technical solutions:
In a first aspect, the embodiment of the present invention provides a kind of inkjet print head, comprising:
Public ink tank, the multiple ink feed grooves being connected to the public ink tank and with the multiple ink feed groove one by one
Multiple nozzles of corresponding connection；
The notch of the multiple ink feed groove is covered with piezoelectric material layer, and the piezoelectric material layer, which generates deformation, to be changed
The capacity of ink feed groove；
It is set in each ink feed groove, positioned at the current limiting component of ink feed groove and the public ink tank connectivity part, is used for
It is blocked when deformation occurs between the second ink feed groove and the public ink tank in the corresponding piezoelectric material region of the first ink feed groove
Connection, wherein the second ink feed groove be the ink feed groove adjacent with the first ink feed groove.
Further, the current limiting component includes flapper and limited block, one end and the ink feed ditch of the flapper
The cell wall of slot is hinged, and the limited block is used for and the flapper between the flapper and the public ink tank
It abuts to limit the rotational angle of the flapper.
Further, the limited block is fixed on the slot bottom or cell wall of ink feed groove.
Further, the quantity of the flapper is two, and two flappers are located at ink feed groove and set relatively
On the two sides cell wall set.
Further, the sum of radius of gyration of two flappers be equal to the two sides cell wall between it is vertical away from
From.
Further, the inkjet print head further includes control circuit；The current limiting component includes electronic valve, the electricity
Sub- valve is connect with the control circuit, and the control circuit is used to control the opening of the electronic valve, is connected to ink feed groove
With the public ink tank；Alternatively, for controlling the electronic valve closure, isolation ink feed groove and the public ink tank.
It further, further include protective film, the protective film is located at the piezoelectric material layer and the multiple ink feed groove
Between.
Further, the multiple nozzle is connected to the slot bottom of the multiple ink feed groove one-to-one correspondence respectively.
Further, the multiple nozzle equidistantly arranges in the same plane.
Second aspect, the embodiment of the present invention also provide a kind of ink jet printing device, including inkjet print head as described above.
In technical solution provided by the invention, sent out by current limiting component in the corresponding piezoelectric material region of the first ink feed groove
The connection between the second ink feed groove and the public ink tank is blocked when raw deformation, so as to prevent that shape occurs because of piezoelectric material
Change causes the ink volume in the second ink feed groove to change, it is ensured that the ink that the corresponding nozzle of subsequent second ink feed groove sprays
The constancy of volume of water eliminates the influence that ink-jet is harassed, it is ensured that the print quality of ink jet printing device.Therefore, provided by the invention
Technical solution can ensure the print quality of ink jet printing device.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, needed in being described below to the embodiment of the present invention
Attached drawing to be used is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention,
For those of ordinary skill in the art, without any creative labor, it can also obtain according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the structural schematic diagram of inkjet print head in the prior art；
Fig. 2 is the structural schematic diagram for the inkjet print head that one embodiment of the invention provides；
Fig. 3 is the cross-sectional view for the inkjet print head that one embodiment of the invention provides；
One of the position view of flapper in the inkjet print head that Fig. 4 a provides for one embodiment of the invention；
One of the position view of Fig. 4 b is flapper when being Fig. 4 a limited block；
Fig. 4 c is flapper when being Fig. 4 a the two of the position view of limited block；
The two of the position view of flapper in the inkjet print head that Fig. 5 a provides for one embodiment of the invention；
One of the position view of Fig. 5 b is flapper when being Fig. 5 a limited block；
Fig. 5 c is flapper when being Fig. 5 a the two of the position view of limited block；
Fig. 6 is the cross-sectional view for the inkjet print head that one embodiment of the invention provides.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are some of the embodiments of the present invention, instead of all the embodiments.Based on this hair
Embodiment in bright, every other implementation obtained by those of ordinary skill in the art without making creative efforts
Example, shall fall within the protection scope of the present invention.
In the prior art, inkjet print head is as shown in Figure 1, include public ink tank 110, multiple ink feed grooves 120 and multiple
Nozzle 130, one end of multiple ink feed grooves 120 and multiple nozzles 130 one-to-one correspondence are connected to, multiple ink feed grooves 120 it is another
End is connected to public ink tank 110；The notch of ink feed groove 120 is covered with the piezoelectric material (not shown) of flood, passes through control
The deformation of piezoelectric material can change the volume of ink feed groove 120, and then realize and squeeze out of ink and dilatation blotting.However, one
When the corresponding piezoelectric material deformation of a ink feed groove, the piezoelectric material of deformation can make the ink feed groove pair for closing on the ink feed groove
Opposite deformation occurs for the piezoelectric material answered, and ink-jet is caused to harass, this harasses the nozzle spray that can make to close on the connection of ink feed groove
Droplet volume out generates deviation, reduces print quality.
The embodiment of the present invention can be avoided spray in view of the above-mentioned problems, provide a kind of inkjet print head and ink jet printing device
Ink harasses the influence of the droplet volume sprayed to nozzle, it is ensured that the print quality of ink jet printing device.
The embodiment of the present invention provides a kind of inkjet print head, as shown in Figures 2 and 3, comprising:
Public ink tank 210, the multiple ink feed grooves 220 being connected to the public ink tank 210 and with the multiple ink feed
Groove 220 corresponds multiple nozzles 230 of connection；
The notch of the multiple ink feed groove 220 is covered with piezoelectric material layer 240, and the piezoelectric material layer 240 generates shape
Become the capacity that can change ink feed groove 220；
It is set in each ink feed groove 220, positioned at the current limliting of ink feed groove 220 and public 210 connectivity part of ink tank
Component 250, for the corresponding piezoelectric material region of the first ink feed groove blocked when deformation occurs the second ink feed groove with it is described
Connection between public ink tank 210, wherein the second ink feed groove is the ink feed ditch adjacent with the first ink feed groove
Slot.
In technical solution provided by the invention, by current limiting component 250 in the corresponding piezoelectric material area of the first ink feed groove
Domain blocks the connection between the second ink feed groove and the public ink tank 210 when deformation occurs, so as to prevent because of piezoresistive material
Deformation occurs that the ink volume in the second ink feed groove is caused to change for material, it is ensured that the corresponding nozzle of subsequent second ink feed groove
The constancy of volume of the ink of ejection eliminates the influence that ink-jet is harassed, it is ensured that the print quality of ink jet printing device.Therefore, this hair
The technical solution of bright offer can ensure the print quality of ink jet printing device.
Above-mentioned inkjet print head is piezoelectric ink jet head.Deformation occurs for piezoelectric material layer 240 to release ink
Nozzle, it should be noted that piezoelectric material layer 240 can be avoided the while releasing the ink in the first ink feed groove
Ink in two ink feed grooves is pushed out, it is ensured that the normal work of inkjet printing.
Above-mentioned public ink tank 210 includes ink entrance 211 and ink outlet port 212.User can be by ink entrance to public ink tank
Ink is provided in 210, it is ensured that there are enough inks to be supplied to multiple ink feed grooves 220 in public ink tank 210.212 energy of ink outlet port
The ink in public ink tank 220 is enough discharged, adjusts the water level of ink in public ink tank 220.
Ink feed groove 220 is as the drainage trough for being connected to public ink tank 210 and nozzle 230, the quantity and spray of ink feed groove 220
The quantity of mouth is identical.Piezoelectric material layer 240 covers the notch of multiple ink feed grooves 220.Piezoelectric material layer 240 is to ink feed groove
When 220 sunken inside, the spatial content that ink feed groove 220 and piezoelectric material 240 are formed reduces；Piezoelectric material layer 240 is to ink feed ditch
When 220 outer lug of slot, the spatial content that ink feed groove 220 and piezoelectric material are formed increases.
Wherein, the multiple nozzle 230 can be equidistant arrangement in the same plane.
It should be noted that due to the whole notch for covering multiple ink feed grooves 220 of piezoelectric material layer 240, one into
When the corresponding piezoelectric material regional deformation of black groove, the corresponding piezoelectric material region of ink feed groove adjacent thereto in overall structure
Also can adaptability deformation occurs, the spatial content formed so as to cause adjacent ink feed groove with piezoelectric material changes,
To which the quantity of ink in adjacent ink feed groove can also change.
It, can be in the first ink feed ditch by adding current limiting component 250 in ink feed groove 220 and public 210 connectivity part of ink tank
In the case that volume change occurs for slot, the connection between the second ink feed groove and public ink tank 210 is blocked, thus the second ink feed ditch
Quantity of ink in slot will not change, it is ensured that the volume for the ink that the subsequent nozzle being connected to the second ink feed groove sprays is not
Become, it is ensured that the print quality of ink jet printing device.Wherein, how current limiting component 250 blocks the second ink feed groove and public ink tank
The mode of connection between 210, the embodiment of the present invention are not construed as limiting this.
In an optional embodiment, as shown in figure 3, the current limiting component 250 includes flapper 251 and limited block
252, one end of the flapper 251 and the cell wall of ink feed groove 220 are hinged, and the limited block 252 is located at the active catch
Between plate 251 and the public ink tank 210, for being abutted with the flapper 251 to limit turning for the flapper 251
Dynamic angle.
Flapper 251 can be rotated in limited block 252 towards the side of nozzle 230 using hinged end as axis, in work
When dynamic baffle 251 abuts (flapper at left and right sides of such as Fig. 3) with limited block 252, flapper 251 can block ink feed ditch
Connection between slot 220 and public ink tank 210, i.e. isolation ink feed groove 220 and public ink tank 210；Flapper 251 not with limit
When position block 252 abuts (flapper among such as Fig. 3), it is connected between ink feed groove 220 and public ink tank 210.
In the present embodiment, as shown in figure 3, the cross section of ink feed groove 220 can be rectangle, corresponding flapper 251
For Rectangular Plate Structure.Certainly, the cross section of ink feed groove 220 can also be other shapes, be not limited thereto.
Wherein, limited block 252 can be affixed to the slot bottom of ink feed groove 220, be also possible to be fixed on ink feed groove 220
Cell wall.
Further, the quantity of the flapper 251 is two, and two flappers 251 are located at ink feed groove
On the 220 two sides cell walls being oppositely arranged.
In the present embodiment, as shown in figure 3, the quantity of the flapper 251 in each ink feed groove 220 is two, two
Flapper 251 is rotated by axis of hinged end respectively.It is cooperated by two flappers 251 and realizes ink feed groove
Isolation or conducting between 220 and public ink tank 210.
The distance between two flappers 251 and nozzle can be different, when two flappers 251 and limited block 252
When abutting, two 251 parts of flapper are folded to be set (as shown in fig. 4 a), thus between ink feed groove 220 and public ink tank 210
Form complete blocking surface.Wherein, when two flappers 251 are shown in Fig. 4 a, the quantity of limited block 252 can be two
A, two limited blocks 252 abut (as shown in Figure 4 b) with flapper 251 respectively, and the quantity of limited block 252 may be 1,
After limited block 252 is abutted with the flapper 251 close to public ink tank 210, lived by the flapper 252 abutted as another
The limited block (as illustrated in fig. 4 c) of dynamic baffle 251.
The distance between two flappers 251 and nozzle can also be identical, when two flappers 251 and limited block
When 252 abutting, the free end of two flappers 251 abuts (as shown in Figure 5 a), thus in ink feed groove 220 and public ink tank
Complete blocking surface is formed between 210.Wherein, when two flappers 251 are shown in Fig. 5 a, the quantity of limited block 252 can
Think two, two limited blocks 252 abut (as shown in Figure 5 b) with flapper 251 respectively, and the quantity of limited block 252 can also be with
Be 1, limited block 252 with abut (as shown in Figure 5 c) with two flappers 251 simultaneously.Wherein, two flappers
The sum of 251 radius of gyration be equal to the two sides cell wall between vertical range, can two flappers 251 the radius of gyration
It is equal, can also another is short with one long, be not construed as limiting herein.
In another optional embodiment, the inkjet print head further includes control circuit；The current limiting component includes electricity
Sub- valve, the electronic valve are connect with the control circuit, and the control circuit is used to control the opening of the electronic valve,
It is connected to ink feed groove and the public ink tank；Alternatively, for controlling the electronic valve closure, isolation ink feed groove and the public affairs
Ink tank altogether.
In the corresponding piezoelectric material regional deformation of the first ink feed groove, the second ink feed groove will be located at by control circuit
Interior electronic valve is closed, and is blocked the connection between the second ink feed groove and public ink tank 210, is avoided in the second ink feed groove
Ink volume variation, it is ensured that the volume of the subsequent nozzle ink jet being connected with the second ink feed groove, it is ensured that ink jet printing device is beaten
Print quality.
Further, as shown in figure 3, inkjet print head further includes protective film 260, the protective film 260 is located at the pressure
Between material layer 240 and the multiple ink feed groove 220.Protective film 260 can be avoided the ink in ink feed groove 220 to pressure
The destruction of material layer 240, it is ensured that piezoelectric material layer 240 being capable of normal deformation.
Further, as shown in fig. 6, the multiple nozzle 230 respectively with the slot bottom of the multiple ink feed groove 220 one by one
Corresponding connection.
Since piezoelectric material layer 240 is covered on the notch of ink feed groove 220, pressure caused by 240 deformation of piezoelectric material layer
Slot bottom can be reached at the first time, by the way that nozzle 230 to be connected to the slot bottom of ink feed groove 220, can be improved the spirit of nozzle ink jet
Sensitivity.
The embodiment of the invention also provides a kind of ink jet printing devices, including inkjet print head as described above.
Unless otherwise defined, the technical term or scientific term that the disclosure uses should be tool in fields of the present invention
The ordinary meaning for thering is the personage of general technical ability to be understood." first ", " second " used in the disclosure and similar word are simultaneously
Any sequence, quantity or importance are not indicated, and are used only to distinguish different component parts." comprising " or "comprising" etc.
Similar word means that the element or object before the word occur covers the element or object for appearing in the word presented hereinafter
And its it is equivalent, and it is not excluded for other elements or object.The similar word such as " connection " or " connected " is not limited to physics
Or mechanical connection, but may include electrical connection, it is either direct or indirectly."upper", "lower",
"left", "right" etc. is only used for indicating relative positional relationship, and after the absolute position for being described object changes, then the relative position is closed
System may also correspondingly change.
It is appreciated that ought such as layer, film, region or substrate etc element be referred to as be located at another element "above" or "below"
When, which " direct " can be located at "above" or "below" another element, or may exist intermediary element.
The embodiment of the present invention is described with above attached drawing, but the invention is not limited to above-mentioned specific
Embodiment, the above mentioned embodiment is only schematical, rather than restrictive, those skilled in the art
Under the inspiration of the present invention, without breaking away from the scope protected by the purposes and claims of the present invention, it can also make very much
Form belongs within protection of the invention.
Claims (10)
1. a kind of inkjet print head characterized by comprising
Public ink tank, the multiple ink feed grooves being connected to the public ink tank and with the multiple ink feed groove correspond
Multiple nozzles of connection；
The notch of the multiple ink feed groove is covered with piezoelectric material layer, and the piezoelectric material layer, which generates deformation, can change ink feed
The capacity of groove；
It is set in each ink feed groove, positioned at the current limiting component of ink feed groove and the public ink tank connectivity part, is used for the
The corresponding piezoelectric material region of one ink feed groove blocks the company between the second ink feed groove and the public ink tank when deformation occurs
It is logical, wherein the second ink feed groove is the ink feed groove adjacent with the first ink feed groove.
2. inkjet print head according to claim 1, which is characterized in that the current limiting component includes flapper and limit
Block, one end of the flapper and the cell wall of ink feed groove are hinged, and the limited block is located at the flapper and the public affairs
Altogether between ink tank, for being abutted with the flapper to limit the rotational angle of the flapper.
3. inkjet print head according to claim 2, which is characterized in that the limited block is fixed on the slot bottom of ink feed groove
Or on cell wall.
4. inkjet print head according to claim 2 or 3, which is characterized in that the quantity of the flapper be two, two
A flapper is located on the two sides cell wall that ink feed groove is oppositely arranged.
5. inkjet print head according to claim 4, which is characterized in that the sum of the radius of gyration of two flappers
Equal to the vertical range between the two sides cell wall.
6. inkjet print head according to claim 1, which is characterized in that the inkjet print head further includes control circuit；
The current limiting component includes electronic valve, and the electronic valve is connect with the control circuit, and the control circuit is for controlling
The opening of the electronic valve, connection ink feed groove and the public ink tank；Alternatively, for controlling the electronic valve closure,
Ink feed groove and the public ink tank is isolated.
7. inkjet print head according to claim 1, which is characterized in that further include protective film, the protective film is located at institute
It states between piezoelectric material layer and the multiple ink feed groove.
8. inkjet print head according to claim 1, which is characterized in that the multiple nozzle respectively with the multiple ink feed
The slot bottom of groove corresponds connection.
9. inkjet print head according to claim 1, which is characterized in that the multiple nozzle is equidistant in the same plane
Arrangement.
10. a kind of ink jet printing device, which is characterized in that including inkjet print head as claimed in any one of claims 1-9 wherein.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910281214.3A CN109980084B (en) | 2019-04-09 | 2019-04-09 | Ink jet print head and ink jet printing apparatus |
| PCT/CN2020/075941 WO2020207121A1 (en) | 2019-04-09 | 2020-02-20 | Ink-jet printing head and ink-jet printing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910281214.3A CN109980084B (en) | 2019-04-09 | 2019-04-09 | Ink jet print head and ink jet printing apparatus |
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| Publication Number | Publication Date |
|---|---|
| CN109980084A true CN109980084A (en) | 2019-07-05 |
| CN109980084B CN109980084B (en) | 2020-12-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910281214.3A Active CN109980084B (en) | 2019-04-09 | 2019-04-09 | Ink jet print head and ink jet printing apparatus |
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| Country | Link |
|---|---|
| CN (1) | CN109980084B (en) |
| WO (1) | WO2020207121A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020207121A1 (en) * | 2019-04-09 | 2020-10-15 | 京东方科技集团股份有限公司 | Ink-jet printing head and ink-jet printing device |
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| CN109070589A (en) * | 2016-07-26 | 2018-12-21 | 惠普发展公司，有限责任合伙企业 | Fluid ejection apparatus with partition wall |
| CN106476430A (en) * | 2016-09-29 | 2017-03-08 | 江阴职业技术学院 | A kind of portable ink-jet printer and its inkjet printing methods |
| CN108099409A (en) * | 2018-01-03 | 2018-06-01 | 京东方科技集团股份有限公司 | Printing head and ink jet printing device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020207121A1 (en) * | 2019-04-09 | 2020-10-15 | 京东方科技集团股份有限公司 | Ink-jet printing head and ink-jet printing device |
Also Published As
| Publication number | Publication date |
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| CN109980084B (en) | 2020-12-01 |
| WO2020207121A1 (en) | 2020-10-15 |
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