CN117283990B - Arrayed electrofluidic nozzle for ink-jet printing and ink-jet printing equipment - Google Patents
Arrayed electrofluidic nozzle for ink-jet printing and ink-jet printing equipment Download PDFInfo
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- CN117283990B CN117283990B CN202311423948.3A CN202311423948A CN117283990B CN 117283990 B CN117283990 B CN 117283990B CN 202311423948 A CN202311423948 A CN 202311423948A CN 117283990 B CN117283990 B CN 117283990B
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- nozzles
- electrofluidic
- arrayed
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- 238000007641 inkjet printing Methods 0.000 title claims abstract description 44
- 230000005684 electric field Effects 0.000 claims abstract description 52
- 239000007921 spray Substances 0.000 claims abstract description 13
- 239000000758 substrate Substances 0.000 claims description 19
- 239000011521 glass Substances 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000007639 printing Methods 0.000 abstract description 16
- 238000004891 communication Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 238000012545 processing Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000001259 photo etching Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
-
- 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
- B41J2/015—Ink jet characterised by the jet generation process
- B41J2/04—Ink jet characterised by the jet generation process generating single droplets or particles on demand
- B41J2/06—Ink jet characterised by the jet generation process generating single droplets or particles on demand by electric or magnetic field
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- Coating Apparatus (AREA)
Abstract
The application relates to an arrayed electrofluidic nozzle for ink-jet printing and a jet printing device, wherein the nozzle comprises a nozzle seat; the spray nozzles are arranged on the spray head seat; the first electrode assembly comprises a first electrode, and applies first electric field force to the solution in the nozzles, wherein the first electric field force enables the solution in the nozzles to be stressed and balanced in the vertical direction; and the second electrode assembly comprises a plurality of second electrodes which are respectively arranged at the plurality of nozzles and apply a second electric field force to the solution in the plurality of nozzles, and the second electric field force enables the solution in the nozzles to be sprayed out. According to the application, the solution in the nozzles is balanced in force in the vertical direction through the first electrode assembly, and then the plurality of nozzles are independently controlled through the second electrode assembly, so that the voltage required to be controlled is reduced, the cost required for realizing independent control of the nozzles is saved, and each nozzle is ensured to be accurately and independently controlled.
Description
Technical Field
The application relates to the technical field of display panel processing, in particular to an arrayed electrofluidic nozzle for inkjet printing and inkjet printing equipment.
Background
The ink jet printing technology is used as an additive manufacturing technology, has the advantages of non-contact, large area, no need of mask, rapid manufacturing, low cost of finished products, capability of directly manufacturing patterns on a plane/curved surface substrate, and the like, is a main manufacturing technology of printed electronics for replacing photoetching/vacuum long-flow processes (development, etching, exposure, cleaning, and the like), and is widely applied to the fields of display, sensing, chips, energy sources, aerospace, and the like.
The electric fluid jet printing technology adopts electric field force to pull out liquid drops in the nozzle, so that the diameter of a printed point is far smaller than that of the nozzle, the diameter of the sprayed liquid drops is reduced, the printing requirement of higher pixel density is met, and the printing resolution is greatly improved.
In the related art, printing is achieved by providing an electrode at a nozzle, and providing an electrode on a substrate or a carrier plate for carrying the substrate to form an electric field, and pulling out the droplet by overcoming the tension of the droplet in the nozzle by the electric field force.
However, the voltage applied to the nozzles is several kilovolts to meet the printing requirements, and when the head is integrated with a plurality of nozzles, each nozzle needs to be independently controlled, i.e., the voltage supplied to each nozzle needs to be controlled so that the different nozzles operate independently.
Because the voltage supplied to each nozzle is higher, when the voltage is controlled, a control board suitable for high-voltage control is needed to be selected, so that the cost of the control board is higher, when the required control voltage is higher, the corresponding control board is not matched with the control board, the voltage supplied to the nozzle is difficult to control, and the independent control of the nozzle cannot be realized.
Disclosure of Invention
The embodiment of the application provides an arrayed electrofluidic nozzle for ink-jet printing and an ink-jet printing device, which are used for solving the problems that a driving plate for adapting to high-voltage control in the related art is high in cost, and is difficult to control over high voltage and independent control over nozzles cannot be realized.
In a first aspect, there is provided an arrayed electrofluidic nozzle for inkjet printing, comprising:
the spray head seat is internally provided with a flow passage;
The spray nozzles are arranged on the spray head seat and are communicated with the flow channel;
A first electrode assembly including a first electrode disposed adjacent to the plurality of nozzles for forming a first electric field between the substrate and the first electrode, the first electric field applying a first electric field force to the solution in the plurality of nozzles, the first electric field force balancing the solution in the nozzles in a vertical direction;
And a second electrode assembly including a plurality of second electrodes respectively arranged at the plurality of nozzles for forming a plurality of second electric fields between the substrate and the plurality of second electrodes, the plurality of second electric fields respectively applying a second electric field force to the solutions in the plurality of nozzles, the second electric field force causing the solutions in the nozzles to be ejected.
In some embodiments, the first electrode and the plurality of second electrodes are arranged at intervals in the length direction of the nozzle, and the plurality of second electrodes are respectively arranged near the outlet ends of the plurality of nozzles.
In some embodiments, the second electrode assembly further comprises a second power supply member comprising:
a second power supply;
the voltage input end of the voltage switch board is electrically connected with the second power supply, and the voltage output ends of the voltage switch board are respectively and electrically connected with the second electrodes so as to respectively control the voltages input to the second electrodes;
And the driving plate is electrically connected with the voltage switch plate so as to control a plurality of voltage output ends of the voltage switch plate.
In some embodiments, the first electrode assembly further comprises a first power supply comprising a first power source electrically connected to the first electrode.
In some embodiments, the first electrode includes a first electric plate, the first electric plate is connected to the nozzle base, and the plurality of nozzles are all disposed through the first electric plate.
In some embodiments, the second electrode includes a conductive ring, and a plurality of the conductive rings are respectively sleeved on a plurality of the nozzles.
In some embodiments, the second electrode assembly further includes a power supply plate, the power supply plate is connected to the nozzle base, and the plurality of conductive rings are all disposed through the power supply plate, or the first electrode plate is disposed above the plurality of nozzles.
In some embodiments, the second electrode comprises a conductive wire that passes through the nozzle.
In some embodiments, the nozzle comprises a capillary glass needle tube.
The technical scheme provided by the application has the beneficial effects that:
The embodiment of the application provides an arrayed electrofluidic nozzle for ink-jet printing, which is characterized in that a first electrode assembly is arranged, a higher voltage is applied to a first electrode, a first electric field force is applied to solutions in a plurality of nozzles, and the solutions in each nozzle are subjected to force balance in the vertical direction through the first electric field force. And then the second electrode assembly is arranged, and the solution in the nozzle can be pulled out through the second electric field force by applying lower voltage to the second electrode, so that the printing function is realized. Because the voltage supplied to the second electrode is lower, the control board with lower cost can be selected to control the voltage supplied to the second electrode, so that the control cost of the spray head is saved, the situation that the required control voltage is higher and cannot be controlled is avoided, and each nozzle is ensured to be accurately and independently controlled.
In a second aspect, there is provided an inkjet printing apparatus comprising an arrayed electrofluidic nozzle head as described above for inkjet printing.
In another embodiment of the present application, since the inkjet printing apparatus includes the arrayed electrofluidic nozzle for inkjet printing described above, the beneficial effects of the inkjet printing apparatus are consistent with those of the arrayed electrofluidic nozzle for inkjet printing described above, and will not be described herein.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of an arrayed electrofluidic nozzle for inkjet printing according to an embodiment of the present application;
FIG. 2 is an enlarged view of FIG. 1 at A;
FIG. 3 is a bottom view of an arrayed electrofluidic nozzle for inkjet printing according to an embodiment of the present application;
FIG. 4 is a schematic diagram of an arrayed electrofluidic nozzle for inkjet printing according to an embodiment of the present application;
FIG. 5 is a schematic diagram of an arrayed electrofluidic nozzle for inkjet printing according to an embodiment of the present application;
FIG. 6 is a schematic diagram of an arrayed electrofluidic nozzle for inkjet printing according to another embodiment of the present application;
FIG. 7 is a side view of an arrayed electrofluidic nozzle for ink jet printing according to another embodiment of the present application;
FIG. 8 is a schematic diagram of an arrayed electrofluidic nozzle for inkjet printing according to another embodiment of the present application;
FIG. 9 is a schematic diagram of an arrayed electrofluidic nozzle for inkjet printing according to another embodiment of the present application;
Fig. 10 is a schematic control diagram of the second power supply and the second electrode according to an embodiment of the present application.
In the figure: 1. a nozzle seat; 11. a flow passage; 12. an ink inlet pipe; 13. an ink outlet tube; 2. a nozzle; 3. a first electrode assembly; 31. a first electrode; 32. a first power supply member; 4. a second electrode assembly; 41. a second electrode; 42. a second power supply member; 421. a second power supply; 422. a voltage switching board; 423. a driving plate; 43. a power supply board; 5. a substrate; 6. and a bearing plate.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
The embodiment of the application provides an arrayed electrofluidic spray head for ink-jet printing and a jet printing device, wherein the spray head enables solution in a nozzle to be stressed and balanced in the vertical direction through a first electrode assembly, and a plurality of nozzles are independently controlled through a second electrode assembly, so that the voltage required to be controlled is reduced, the cost is saved, and each nozzle is ensured to be accurately and independently controlled. The application solves the problems that the cost of a driving plate for adapting to high-voltage control in the related technology is high, the control on the excessive high voltage is difficult, and the independent control on the nozzle can not be realized.
Referring to fig. 1 and 2, an arrayed electrofluidic cartridge for inkjet printing includes a cartridge 1, a plurality of nozzles 2, a first electrode assembly 3, and a second electrode assembly 4. The first electrode assembly 3 applies a first electric field force to the solution in the plurality of nozzles 2 so as to balance the force of the solution in the nozzles 2 in the vertical direction, the second electrode assembly 4 applies a second electric field force to the solution in the plurality of nozzles 2 respectively, and the solution in the nozzles 2 is pulled out by the second electric field force. The plurality of nozzles 2 are independently controlled by controlling the second electrode assembly 4. The first electric field force makes the second electric field force sprayed by the solution in the nozzle 2 smaller, so that the voltage required to be controlled by the second electrode assembly 4 is smaller, the control board with lower cost is convenient to select to control the second electrode assembly 4, the condition that the required control voltage is higher and cannot be controlled is avoided, and each nozzle 2 is ensured to be accurately and independently controlled.
Referring to fig. 1, a flow channel 11 is provided in a nozzle holder 1, a plurality of nozzles 2 are all mounted on the nozzle holder 1, and the plurality of nozzles 2 are all disposed through the nozzle holder 1. A plurality of communication holes are formed in the flow channel 11, and the inlet end of the nozzle 2 is inserted into the flow channel 11 through the communication holes, so that the inlet end of the nozzle 2 is communicated with the flow channel 11, and ink supply to the nozzle 2 is realized.
Referring to fig. 1, the length direction of the flow channel 11 is consistent with the length direction of the arrangement of the plurality of nozzles 2, and the two ends of the flow channel 11 are respectively communicated with an ink inlet pipe 12 and an ink outlet pipe 13, the ink inlet pipe 12 and the ink outlet pipe 13 are arranged on the nozzle base 1 in a penetrating way, and the ink inlet pipe 12 and the ink outlet pipe 13 are used for supplying ink to the flow channel 11 and discharging redundant solution in the flow channel 11. In addition, the circulation of the solution in the flow channel 11 can be realized through the ink inlet pipe 12 and the ink outlet pipe 13 so as to support the circulation ink supply, reduce bubbles in the solution and ensure the printing quality.
Referring to fig. 1 and 3, in the present embodiment, the nozzles 2 are arranged in a plurality of rows, and the nozzles 2 between different rows are staggered from each other, so as to improve the printing efficiency and meet the printing requirement of higher resolution.
Referring to fig. 1 and 7, when the nozzles 2 are provided in a plurality of rows, a flow dividing plate is provided in the flow path 11, so that the flow path 11 is divided into a plurality of branches, and the plurality of branches are respectively communicated by the plurality of rows of nozzles 2. Thereby improving the stability of the flow of the solution in the flow channel 11 and reducing the possibility of occurrence of bubbles.
Referring to fig. 4 and 5, in which, at the time of printing, the substrate 5 is positioned below the nozzles 2, and the substrate 5 is supported by the carrier plate 6.
Referring to fig. 4 and 5, the first electrode assembly 3 includes a first electrode 31 and a first power supply member 32. The first electrode 31 is disposed near the plurality of nozzles 2, and the first power supply member 32 is configured to supply a voltage to the first electrode 31, and at the same time, the first power supply member 32 is configured to supply a voltage to the substrate 5 or the carrier plate 6, so as to form a first electric field between the substrate 5 and the first electrode 31, where the first electric field applies a first electric field force to the solutions in the plurality of nozzles 2. The first electric field force balances the solution in the nozzle 2 in the vertical direction.
Referring to fig. 4, in the present embodiment, the first power supply member 32 supplies power to the substrate 5. Referring to fig. 5, in other embodiments, the first power supply member 32 supplies power to the carrier plate 6.
The solution in the nozzles 2 is in a stress balance state in the vertical direction under the action of the first electric field force, so that the solution in the nozzles 2 can be pulled out only by applying small downward force to the solution in the nozzles 2, and printing processing is realized. In the present embodiment, the high voltage supplied to the substrate 5 and the first electrode 31 does not need to be independently controlled, so that the supply of the high voltage does not need to be controlled, and a control board corresponding to the high voltage control does not need to be matched, thereby saving the cost.
Referring to fig. 4 and 5, in particular, the first electrode 31 includes a first electric plate. In this embodiment, the first electric plate is fixed on the nozzle base 1 by bolts, and a plurality of through holes for passing through the plurality of nozzles 2 respectively are formed in the first electric plate. A plurality of nozzles 2 each pass through the first electric plate. A first electric field can be formed between the first electric plate and the substrate 5, and the solution in the nozzle 2 is balanced in the vertical direction by the force of the first electric field.
In some embodiments, the first electric plate is located above the plurality of nozzles 2, specifically, the first electric plate is fixed on the bottom surface of the flow channel 11, and a plurality of through holes respectively communicating with the plurality of communication holes are formed on the first electric plate, so that the solution in the flow channel 11 enters the communication holes to be supplied to the plurality of nozzles 2.
Preferably, the first electric plate comprises a stainless steel plate so as to reduce ionization influence on the solution after the first electric plate is electrified, and the first electric plate is not easy to rust and ensures that the solution is not polluted.
Specifically, the first power supply member 32 includes a first power source, which is preferably a direct current power source that can supply a high voltage at low cost, and is simple to install and has a small voltage supply loss.
Referring to fig. 4 and 5, the second electrode assembly 4 includes a second power supply 42 and a plurality of second electrodes 41. A plurality of second electrodes 41 are arranged at the plurality of nozzles 2, respectively. The second power supply member 42 is configured to supply voltages to the plurality of second electrodes 41 independently, and at the same time, the second power supply member 42 is configured to supply voltages to the substrate 5 or the carrier plate 6, so as to form a plurality of second electric fields between the substrate 5 and the plurality of second electrodes 41, respectively, and the plurality of second electric fields apply second electric field forces to the solutions in the plurality of nozzles 2, respectively.
In the present embodiment, referring to fig. 4, the second power supply member 42 supplies power to the substrate 5. Referring to fig. 5, in other embodiments, the second power supply member 42 supplies power to the carrier plate 6.
So arranged, the solutions in the plurality of nozzles 2 are all force balanced in the vertical direction due to the first electric field force. The solution in the nozzle 2 is pulled out by the second electric field force, and the required second electric field force is small, so that the intensity of the formed second electric field is also small, and correspondingly, the voltage supplied to the second electrode 41 is low. In addition, by independently supplying power to the plurality of second electrodes 41, and the supply voltage is low, the voltage supplied to the plurality of second electrodes 41 can be conveniently and independently controlled at low cost, so that the plurality of nozzles 2 can be conveniently and independently controlled, and the situation that the nozzles 2 cannot be independently controlled due to a control board without adaptation is not easy to occur. Therefore, the plurality of nozzles 2 can be independently controlled at low cost and with high accuracy.
Referring to fig. 4 and 5, it is preferable that the first electrode 31 and the second electrode 41 are each disposed at intervals in the length direction of the nozzles 2, and the plurality of second electrodes 41 are disposed near the outlet ends of the plurality of nozzles 2, respectively. It will be appreciated that in a print operation, the plurality of second electrodes 41 are disposed below the first electrodes 31.
So arranged, the second electrode 41 is arranged close to the outlet of the nozzle 2, and the second electric field force applied to the solution at the outlet of the nozzle 2 is larger, so that the second electric field force generated by the second electric field on the solution is fully utilized.
Referring to fig. 4 and 5, the second electrode 41 includes a conductive ring, and a plurality of conductive rings are respectively sleeved on the plurality of nozzles 2. The first power supply 32 causes the solution in the nozzle 2 to be pulled out by supplying a voltage to the plurality of conductive rings. Because the conducting ring is positioned at the outer side of the nozzle 2, the conducting ring is difficult to ionize the solution in the nozzle 2 after being electrified.
Referring to fig. 2, 4 and 5, further, the second electrode assembly 4 further includes a power supply plate 43, and the power supply plate 43 is fastened to the nozzle mount 1 by bolts. The plurality of conductive rings are all arranged on the power supply plate 43 in a penetrating way. Therefore, the plurality of conductive rings are convenient to install, the inner diameter of each conductive ring is larger than the outer diameter of the nozzle 2, the conductive rings are convenient to sleeve the nozzle 2, the conductive rings are prevented from being contacted with the nozzle 2, and the nozzle 2 is not easy to be electrified and ionization to the solution in the nozzle 2 is also difficult to be caused.
Specifically, the power supply board 43 includes a printed circuit board, and the conductive ring is a copper ring so as to be printed onto the printed circuit board. The power supply board 43 is printed with a plurality of power supply circuits, and the plurality of power supply circuits are respectively arranged corresponding to the plurality of conductive rings. One end of the power supply circuit is connected with the conductive ring, and the other end of the power supply circuit is connected with the second power supply piece 42 through the wire body. Whereby it is convenient to supply voltages independently to the plurality of conductive rings through the power supply plate 43.
Referring to fig. 6-9, in other embodiments, the second electrode 41 comprises a conductive wire that passes through the nozzle 2. Specifically, one end of the conductive wire is inserted into the nozzle 2, the other end of the conductive wire is inserted from the inlet of the nozzle 2, and one end of the conductive wire extending from the inlet of the nozzle 2 is inserted from the side wall of the nozzle holder 1, so as to be electrically connected with the second power supply member 42.
Note that in this embodiment, the nozzle 2 is inserted into the communication hole, but not into the flow passage 11, and the nozzle 2 communicates with the flow passage 11 through the communication hole. The conductive wire passes out of the nozzle base 1 from the hole wall of the communication hole.
Wherein the conductive wire comprises a tungsten wire.
By supplying a voltage to the conductive wire to form a second electric field between the conductive wire and the substrate 5, the cost of arranging the conductive wire is low, and the structure of the entire head is simpler and the assembling efficiency of the nozzle 2 is higher.
Referring to fig. 10, in detail, the second power supply 42 includes a second power source 421, a voltage switching board 422, and a driving board 423. The voltage input terminal of the voltage switching board 422 is electrically connected to the second power source 421, and the plurality of voltage output terminals of the voltage switching board 422 are electrically connected to the plurality of second electrodes 41, respectively, to control voltages input to the plurality of second electrodes 41, respectively. The driving board 423 is electrically connected to the voltage switching board 422 to control a plurality of voltage output terminals of the voltage switching board 422.
In particular, the voltage switch board 422 comprises a MOSFET switch board. The driving board 423 mainly realizes low-voltage side electrical signal processing, and the MOSFET switch board mainly realizes high-voltage side electrical signal processing. In order to avoid the system control failure caused by the mutual interference of the high voltage and the low voltage signals, the low voltage and the high voltage circuits are respectively and independently designed as single boards, and meanwhile, the interconnection control signals are designed as isolation circuits on the side of the driving board 423 so as to avoid the mutual crosstalk between the high voltage and the low voltage signals and ensure the precise control of the voltages supplied to the plurality of second electrodes 41.
Specifically, the second power supply 421 includes an ac power supply, and controls the magnitude of the voltage supplied to the second electrodes 41 and the supply interval time by adjusting the waveform of the ac power supplied to the plurality of second electrodes 41, thereby facilitating control of the operation state of the nozzle 2.
The arrayed electrofluidic nozzle for inkjet printing further comprises a connecting terminal, the first power supply piece 32 is electrically connected with the first electrode 31 through the connecting terminal, and the second power supply piece 42 is electrically connected with the plurality of second electrodes 41 through the connecting terminal, so that power can be conveniently supplied to the first electrode 31 and the second electrodes 41.
In this embodiment, the nozzle 2 includes a capillary glass needle tube, which is manufactured by a drawing process, and has an outer diameter and an inner diameter that are kept in a small range due to the processing characteristics, and generally, the inner diameter of the capillary glass needle tube can reach 2-10 micrometers, and the outlet end of the capillary glass needle tube is cone-shaped, so that the diameter of the outlet is further reduced, and droplets with smaller diameters can be ejected to meet the requirement of high-resolution printing. Compared with the metal needle mouth, the metal needle mouth has the minimum inner diameter of about 80 microns due to limited processing, and is difficult to meet the high-resolution printing requirement.
In other embodiments, the nozzle 2 comprises a steel needle or a silicon-based spray head.
The embodiment of the application provides an arrayed electrofluidic nozzle for ink-jet printing, which is characterized in that due to the arrangement of a first electrode assembly 3, a first electric field force is applied to a solution in a plurality of nozzles 2 by applying a higher voltage to a first electrode 31, and the solution in each of the plurality of nozzles 2 is balanced in a stress direction by the first electric field force. By providing the second electrode assembly 4, the solution in the nozzle 2 can be pulled out by the second electric field force by applying a lower voltage to the second electrode 41, thereby realizing the printing function. Because the voltage supplied to the second electrode 41 is low, a control board with low cost can be selected to control the voltage supplied to the second electrode 41, so that the control cost of the spray head is saved, the situation that the required control voltage is high and cannot be controlled is avoided, and each nozzle 2 is ensured to be accurately and independently controlled.
Another embodiment of the present application provides an inkjet printing apparatus comprising an arrayed electrofluidic nozzle for inkjet printing as described above.
Since the inkjet printing apparatus includes the above-described arrayed electrofluidic nozzle for inkjet printing, the beneficial effects of the inkjet printing apparatus are consistent with those of the above-described arrayed electrofluidic nozzle for inkjet printing, and will not be described in detail herein.
In the description of the present application, it should be noted that the azimuth or positional relationship indicated by the terms "upper", "lower", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present application and simplifying the description, and are not indicative or implying that the apparatus or element in question must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present application. Unless specifically stated or limited otherwise, the terms "mounted," "connected," and "coupled" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
It should be noted that in the present application, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The foregoing is only a specific embodiment of the application to enable those skilled in the art to understand or practice the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. An arrayed electrofluidic nozzle for inkjet printing, comprising:
the spray head seat is internally provided with a flow passage;
The spray nozzles are arranged on the spray head seat and are communicated with the flow channel;
A first electrode assembly including a first electrode disposed adjacent to the plurality of nozzles for forming a first electric field between the substrate and the first electrode, the first electric field applying a first electric field force to the solution in the plurality of nozzles, the first electric field force balancing the solution in the nozzles in a vertical direction;
A second electrode assembly including a plurality of second electrodes respectively arranged at the plurality of nozzles for forming a plurality of second electric fields between the substrate and the plurality of second electrodes, the plurality of second electric fields respectively applying a second electric field force to the solutions in the plurality of nozzles, the second electric field force causing the solutions in the nozzles to be ejected; wherein,
The first electrode and the plurality of second electrodes are arranged at intervals in the length direction of the nozzle.
2. An arrayed electrofluidic nozzle tip for ink jet printing as claimed in claim 1, wherein a plurality of said second electrodes are disposed adjacent to the outlet ends of a plurality of said nozzles, respectively.
3. The arrayed electrofluidic nozzle of claim 1 or 2, wherein the second electrode assembly further comprises a second power supply comprising:
a second power supply;
the voltage input end of the voltage switch board is electrically connected with the second power supply, and the voltage output ends of the voltage switch board are respectively and electrically connected with the second electrodes so as to respectively control the voltages input to the second electrodes;
And the driving plate is electrically connected with the voltage switch plate so as to control a plurality of voltage output ends of the voltage switch plate.
4. The arrayed electrofluidic nozzle of claim 1 or 2, wherein the first electrode assembly further comprises a first power supply comprising a first power source electrically connected to the first electrode.
5. The arrayed electrofluidic nozzle tip for inkjet printing of claim 1, wherein the first electrode comprises a first electrical plate, the first electrical plate being connected to the nozzle tip seat, a plurality of the nozzles each penetrating the first electrical plate, or the first electrical plate being located above a plurality of the nozzles.
6. The arrayed electrofluidic nozzle tip for inkjet printing of claim 1, wherein the second electrode comprises a conductive ring, the plurality of conductive rings being respectively sleeved on the plurality of nozzles.
7. The arrayed electrofluidic nozzle of claim 6, wherein the second electrode assembly further comprises a power plate, the power plate being connected to the nozzle base, the plurality of conductive rings each passing through the power plate.
8. The arrayed electrofluidic nozzle tip for inkjet printing of claim 1, wherein the second electrode comprises a conductive wire that passes through the nozzle.
9. An arrayed electrofluidic nozzle for inkjet printing according to claim 1 wherein the nozzle comprises a capillary glass needle tube.
10. Inkjet printing apparatus comprising an arrayed electrofluidic nozzle head for inkjet printing according to any one of claims 1 to 9.
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| CN202311423948.3A CN117283990B (en) | 2023-10-30 | 2023-10-30 | Arrayed electrofluidic nozzle for ink-jet printing and ink-jet printing equipment |
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| CN117283990B true CN117283990B (en) | 2024-06-04 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5815178A (en) * | 1995-04-12 | 1998-09-29 | Eastman Kodak Company | Printing method and apparatus employing electrostatic drop separation |
| US5923346A (en) * | 1995-10-23 | 1999-07-13 | Imaging Technology International | Shadow pulse compensation of an ink jet printer |
| JP2004066531A (en) * | 2002-08-02 | 2004-03-04 | Canon Inc | Inkjet apparatus and method for forming ink liquid drop |
| JP2004136656A (en) * | 2002-09-24 | 2004-05-13 | Konica Minolta Holdings Inc | Process for manufacturing electrostatic attraction liquid ejection head, process for manufacturing nozzle plate, driving method for electrostatic attraction liquid ejection head, and electrostatic attraction liquid ejector |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4044012B2 (en) * | 2003-08-29 | 2008-02-06 | シャープ株式会社 | Electrostatic suction type fluid discharge device |
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2023
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5815178A (en) * | 1995-04-12 | 1998-09-29 | Eastman Kodak Company | Printing method and apparatus employing electrostatic drop separation |
| US5923346A (en) * | 1995-10-23 | 1999-07-13 | Imaging Technology International | Shadow pulse compensation of an ink jet printer |
| JP2004066531A (en) * | 2002-08-02 | 2004-03-04 | Canon Inc | Inkjet apparatus and method for forming ink liquid drop |
| JP2004136656A (en) * | 2002-09-24 | 2004-05-13 | Konica Minolta Holdings Inc | Process for manufacturing electrostatic attraction liquid ejection head, process for manufacturing nozzle plate, driving method for electrostatic attraction liquid ejection head, and electrostatic attraction liquid ejector |
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| CN117283990A (en) | 2023-12-26 |
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