WO2018107347A1 - 一种喷墨打印喷头及喷墨打印设备 - Google Patents

一种喷墨打印喷头及喷墨打印设备 Download PDF

Info

Publication number
WO2018107347A1
WO2018107347A1 PCT/CN2016/109562 CN2016109562W WO2018107347A1 WO 2018107347 A1 WO2018107347 A1 WO 2018107347A1 CN 2016109562 W CN2016109562 W CN 2016109562W WO 2018107347 A1 WO2018107347 A1 WO 2018107347A1
Authority
WO
WIPO (PCT)
Prior art keywords
ink
sub
peripheral wall
print head
inkjet
Prior art date
Application number
PCT/CN2016/109562
Other languages
English (en)
French (fr)
Inventor
胡耀
Original Assignee
深圳市柔宇科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 深圳市柔宇科技有限公司 filed Critical 深圳市柔宇科技有限公司
Priority to CN201680036570.3A priority Critical patent/CN107820464B/zh
Priority to PCT/CN2016/109562 priority patent/WO2018107347A1/zh
Publication of WO2018107347A1 publication Critical patent/WO2018107347A1/zh

Links

Images

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
    • 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
    • B41J29/393—Devices for controlling or analysing the entire machine ; Controlling or analysing mechanical parameters involving printing of test patterns

Definitions

  • the present invention relates to the field of printing, and in particular to an inkjet printing head and an inkjet printing apparatus.
  • Inkjet printers were developed after the dot matrix printer and used a non-strike mode of operation. The outstanding advantages are small size, simple and convenient operation, low printing noise, and pictures that can be compared with photos when using special paper.
  • Existing inkjet printers typically achieve a printing effect by applying a certain pressure to the ink chamber to extrude the ink to form ink droplets.
  • this pressure extrusion printing method does not easily control the amount of ink dropped, resulting in an inability to adapt to high-precision printing requirements, particularly the printing accuracy requirements of touch electrodes for touch screens.
  • Embodiments of the present invention provide an inkjet printhead that meets high precision printing requirements.
  • Embodiments of the present invention also provide an inkjet printing apparatus.
  • the invention provides an inkjet printing nozzle, which is applied to an inkjet printing device, which comprises a peripheral wall of a nozzle and an ink inlet and an ink outlet at opposite ends of the peripheral wall of the nozzle, and the peripheral wall of the nozzle is formed to accommodate a space for containing ink entering through the ink inlet, the ink outlet for ejecting the ink onto a substrate, the peripheral wall of the showerhead being electrically connected to a control unit of the inkjet device for receiving The voltage is controlled to vary the opening width of the ink outlet in accordance with the control voltage.
  • the peripheral wall of the nozzle is made of a piezoelectric material.
  • the peripheral wall of the nozzle includes a first sidewall and a second sidewall
  • the control unit controls the first sidewall and the second sidewall to close or separate from each other to change the width of the ink outlet.
  • the ink outlet is closed when the first side wall and the second side wall are close together, and the ink outlet is opened when the first side wall is separated from the second side wall.
  • the ink is a charged ink.
  • the ink is dripped from the ink outlet by an electric field drive.
  • the ink includes a conductive polymer having an acidic functional group and a basic functional group.
  • the ink is charged by adding an alkaline substance.
  • the ink includes a sulfonic acid group and is charged by adding ammonia water.
  • the peripheral wall of the nozzle includes a first sub-peripheral wall and a second sub-peripheral wall, the first end of the first sub-circumference wall is the ink outlet, and the second sub-peripheral wall is connected to the second end of the first sub-peripheral wall
  • the first sub-peripheral wall is composed of a piezoelectric material, and the first sub-peripheral wall is electrically connected to the control unit.
  • the second sub-circumference wall is a non-piezoelectric material, and the second sub-circumference wall encloses an ink inlet.
  • the inkjet print head further includes an inner valve, the inner valve being disposed on the second sub-perimeter wall, the inner valve having a restriction port to allow ink flowing in from the ink inlet to pass through the restriction port Flow out to the ink outlet.
  • the inner valve is also connected to the control unit such that the control unit controls activation of the restriction port of the inner valve.
  • the inner valve includes a first sub-gate and a second sub-door
  • the control unit electrically connects the first sub-gate and the second sub-door to control the first sub-door and the second sub-door Closing and opening, when the first sub-door and the second sub-door are closed, the restriction opening is closed to prohibit ink from flowing into the ink outlet, when the first sub-door and the second sub-door are opened,
  • the restriction port is formed between the first and second sub-doors.
  • the present invention provides an inkjet printing apparatus comprising a control unit and the above-described inkjet printing head.
  • the inkjet printing device further comprises an ink storage chamber and a feeding chamber, the feeding chamber is disposed below the ink outlet, the ink storage chamber is for storing ink, and the ink storage chamber is disposed at the Above the ink inlet.
  • the inkjet printing apparatus further includes a micro electric field emission plate for generating an electric field in the charging chamber to drive the ink to drip from the ink outlet.
  • micro-electric field reflector is located below the input cavity.
  • the control unit includes a spray point circuit, the spray point circuit includes a first switch tube and a second switch tube, and the control end of the first switch tube receives a selected voltage, and the first end of the first switch tube Connecting a data voltage, a second end of the first switch tube is connected to a control end of the second switch tube, a first end of the second switch tube receives a regulation voltage, and a second end of the second switch tube As an output, it is used to supply a control voltage to the peripheral wall of the nozzle.
  • the method further includes a capacitor connected between the first end and the second end of the second switch tube.
  • the inkjet printing head of the present invention is applied to an inkjet printing apparatus, which comprises a spray a head circumference wall and an ink inlet and an ink outlet at opposite ends of the peripheral wall of the head, wherein a peripheral space is formed in the peripheral wall of the head to accommodate ink entering through the ink inlet, and the ink outlet is used to discharge the ink Sprayed onto the substrate, the peripheral wall of the showerhead is also coupled to a control unit of the inkjet device for receiving a control voltage to vary the opening width of the ink outlet in accordance with the control voltage. Since the opening width of the ink outlet is controlled by the control unit, the amount of dripping of the ink can be accurately controlled, thereby satisfying high-precision printing requirements.
  • FIG. 1 is a schematic view showing an ink jet printing head according to a first embodiment of the first embodiment of the present invention in a first state.
  • FIG. 2 is a schematic view showing an inkjet printing head according to a first embodiment of the first embodiment of the present invention in a second state.
  • FIG. 3 is a schematic diagram of an inkjet printing head according to a second embodiment of the first embodiment of the present invention in a first state.
  • FIG. 4 is a schematic cross-sectional view of an inkjet printing apparatus according to a second embodiment of the present invention.
  • Figure 5 is a circuit diagram of the dot circuit of Figure 4.
  • a first embodiment of the present invention provides an inkjet printhead 100.
  • the inkjet printhead 100 is applied to an inkjet printing apparatus.
  • the inkjet printhead 100 includes a showerhead peripheral wall 10 and an ink inlet 20 and an ink outlet 30 at opposite ends of the showerhead peripheral wall 10.
  • An accommodation space 12 is formed in the peripheral wall 10 of the showerhead to accommodate ink entering through the ink inlet 20.
  • the ink outlet 30 is used to eject the ink onto a substrate (not shown).
  • the showerhead peripheral wall 10 is electrically connected to a control unit (not shown) of the inkjet device for receiving a control voltage for control A voltage is applied to vary the opening width of the ink outlet 30.
  • the ink is a conductive ink.
  • the conductive ink adopts a sol formed by PEDOT:PSS (polyethylenedioxythiophene-doped polystyrenesulfonic acid), and the conductive polymer itself contains both an acidic functional group and a basic functional group, so there is an isoelectric point. (It is electrically neutral at a certain pH), and it has the characteristic of being non-electrically neutral over this range.
  • the pH was set to 10 based on the process operability, and the pH of the conductive ink was adjusted using ammonia water.
  • ammonia water is a volatile substance which volatilizes during the process of ink dripping and solidification, and does not have much influence on the final printing effect.
  • the colloid of the ink contains a sulfonic acid group, which is an acidic functional group and belongs to a hydrophilic group. Therefore, the ink is charged by adding ammonia water NH3 ⁇ H2O to the colloid to adjust the colloid to leave the isoelectric point.
  • the ink is used to form a touch electrode, a lead, and the like of the touch screen.
  • the inkjet print head 100 has a truncated cone shape.
  • the inkjet printhead 100 can be composed of two halves of a semi-circumferential wall (such as two semi-circular semi-circumferential walls).
  • the projection of the peripheral wall 10 of the showerhead on the substrate is circular.
  • One end of the peripheral wall 10 of the head is the ink inlet 20.
  • the other end of the peripheral wall 10 of the showerhead is the ink outlet 30.
  • the diameter of the ink inlet 20 is larger than the diameter of the ink outlet 30.
  • the shape of the inkjet printhead 100 can be varied as needed.
  • the nozzle peripheral wall 10 is made of a piezoelectric material. Specifically, it may be a piezoelectric ceramic material.
  • the piezoelectric material can be deformed under voltage. Therefore, when the control unit does not apply a voltage to the peripheral wall 10 of the head, the ink outlets 30 are gathered together to be closed (see Fig. 1), and the ink inside the accommodating space 12 is kept from dripping.
  • the control unit applies a voltage to the peripheral wall 10 of the head, the ink outlet 30 is deformed, and the ink outlet 30 is opened (see FIG. 2), so that the ink in the accommodating space 12 is discharged from the ink. Exit 30 drops.
  • the inkjet printhead 100 is adapted to flow ink particles of different sizes from the ink outlet 30 without causing clogging of the ink to meet printing requirements.
  • the showerhead peripheral wall 10 can be a monolithic continuous piezoelectric material that expands or contracts circumferentially by a piezoelectric effect, thereby changing the size of the ink outlet 30.
  • the peripheral wall 10 of the nozzle can also be packaged.
  • Two independent side walls made of piezoelectric material ie, the peripheral wall 10 of the showerhead includes a first side wall and a second side wall), and two side walls (ie, the first side wall and the second side are controlled by the control unit)
  • the voltage of the wall causes the two side walls to close or separate from each other, thereby changing the size of the ink outlet 30.
  • the ink outlet 30 is closed; when the two side walls are separated, the ink outlet 30 is opened.
  • the number of the side walls is not limited to two, and may be three, four or the like. The more the number of side walls, the more precise the degree of opening of the ink outlet 30 is.
  • the showerhead peripheral wall 10 includes a first sub-peripheral wall 14 and a second sub-peripheral wall 16.
  • the first end of the first sub-peripheral wall 14 is the ink outlet 30.
  • the second sub-peripheral wall 16 is connected to the second end of the first sub-peripheral wall 14.
  • the first sub-peripheral wall 14 is made of a piezoelectric material.
  • the first sub-peripheral wall 14 is electrically connected to the control unit.
  • the second sub-peripheral wall 16 is a non-piezoelectric material, and the second sub-peripheral wall 16 encloses an ink inlet 20 .
  • the control unit controls the deformation of the first sub-peripheral wall 14 to change the size of the ink outlet 30.
  • the second sub-peripheral wall 16 is then uncontrolled by the control unit, that is to say the size of the ink inlet 20 does not change.
  • a second embodiment of the present invention provides an inkjet printhead 200.
  • the inkjet printhead 200 provided by the second embodiment is similar to the inkjet printhead 100 of the first embodiment, except that the inkjet printhead 100 further includes an inner valve 40.
  • the inner valve 40 is disposed on the second sub-perimeter wall 16, and the inner valve 40 has a restricting port (not shown) to allow ink flowing in from the ink inlet 20 to flow out to the Ink outlet 30.
  • the inner valve 40 is also electrically connected to the control unit such that the control unit controls opening and closing of the restriction port of the inner valve 40.
  • the inner valve 40 is a non-piezoelectric material.
  • the amount of ink to be inked may be too small to be controlled.
  • the inner valve 40 can be opened when a voltage is applied to the piezoelectric material, the ink flows into the space below the inner valve 40, and the degree of opening of the inner valve 40 is controlled by the control unit so that the ink can flow into the interior The amount of ink in the space below the valve 40 is limited.
  • the inner valve 40 can continue to be opened for a period of time to allow a portion of the ink to enter the space below the inner valve 40 and then close. These portions of ink entering the space below the inner valve 40 can be used directly when the next piezoelectric material is opened, without waiting for the ink above the inner valve 40 to fall, thereby saving ink ejection time.
  • the inner valve 40 may also not be electrically connected to the control unit. Place The restriction port of the inner valve 40 is always in an open state to restrict the flow of the ink.
  • the inner valve 40 includes a first sub-door 41 and a second sub-door 42.
  • the control unit electrically connects the first and second sub-doors 41 and 42 to control the first sub-door 41 and the second sub-door 42 to close and open.
  • the restricting opening is closed to inhibit ink from flowing into the ink outlet.
  • the restriction opening is opened.
  • the first and second sub-doors 41 and 42 are electrically connected to the control unit, and when the control unit controls the first and second sub-doors 41 and 42 to be closed, the inner The valve 40 isolates the receiving space 12 into two separate spaces, one in communication with the ink inlet 20 and the other in communication with the ink outlet 30.
  • the first and second sub-doors 41 and 42 may not be electrically connected to the control unit, and the first and second sub-doors 41 and 42 are in an always-on state, and The extent to which the first and second sub-doors 41 and 42 are opened allows the inner valve 40 to function as a current limiting.
  • a second embodiment of the present invention provides an inkjet printing apparatus 400.
  • the inkjet printing apparatus 400 includes a control unit 410 inkjet printhead.
  • the inkjet print head can be the inkjet print head 100 provided in the first embodiment. Since the inkjet print head has been described in detail in the above embodiments, it will not be described herein.
  • the inkjet printing apparatus 400 includes a control unit 410 and the inkjet printhead 100.
  • the peripheral wall 10 of the inkjet print head 100 is made of a piezoelectric material.
  • the piezoelectric material can be deformed under voltage. Therefore, when the control unit 410 does not apply a voltage to the peripheral wall 10 of the head, the ink outlets 30 are gathered together to be closed, and the ink inside the accommodating space 12 is kept from dripping.
  • the control unit 410 applies a voltage to the peripheral wall 10 of the head, the ink outlet 30 is deformed, and the ink outlet 30 is opened, so that the ink in the accommodating space 12 is dripped from the ink outlet 30. .
  • the inkjet printing apparatus 400 is adapted to flow ink particles of different sizes from the ink outlet 30 without causing clogging of the ink, thereby Meet the printing needs.
  • the inkjet printing apparatus 400 further includes a micro electric field emission plate 420 and an ink storage cavity 430. And feeding chamber 440.
  • the ink storage chamber 430 is used to store ink and communicate with the ink inlet 20.
  • the ink in the ink storage chamber 430 is squeezed by the upper air pressure and diffused into the inkjet print head 100 by layer tension.
  • the control unit 410 and the ink storage chamber 430 are disposed above the ink inlet 20 , and the feeding chamber 440 and the micro electric field emitting plate 420 are sequentially disposed below the ink outlet 30 .
  • the micro-electric field emission plate 420 is configured to generate an electrostatic field perpendicular to the flow direction of the ink in the feed chamber 440 to generate a force from the ink inlet 20 to the ink outlet 30 for the ink, thereby driving the The ink drip from the ink outlet 30.
  • the feed chamber 440 is located above the micro-electric field emission plate 420 for placing a substrate to which ink is to be attached. Wherein the ink is a charged ink.
  • the ink since the diameter of the ink is small, the gravity of the ink itself is not easily dropped by the air resistance. Therefore, by using the micro-electric field emission plate 420 to generate an electric field, the ink is driven to be driven. Can accurately fall in the desired position. That is, the electric field generated by the micro-field emission plate 420 drives the ink to move toward the substrate, causing the ink to drip on the surface of the substrate. It will be appreciated that the micro-electric field emission plate 420 can also be placed on the side of the inkjet printing device 400 or above the ink storage chamber 430, only to ensure that an electric field that drives the ink toward the substrate can be created. Of course, if the ink has a large diameter, it can also fall to a specific position of the substrate under the action of gravity, and thus it is not necessary to use the micro-electric field emission plate 420, and it is not necessary to charge the ink.
  • the control unit 410 includes a spotting circuit 450.
  • the spray point circuit 450 includes a first switch tube T1, a second switch tube T2, and a capacitor C.
  • the control end of the first switch tube T1 receives the selected voltage Vsel.
  • the first end of the first switch tube T1 is connected to the data voltage Vdata.
  • the second end of the first switch tube T1 is connected to the control end of the second switch tube T2, and the first end of the second switch tube T2 receives the adjustment voltage Vdd.
  • the second end of the second switch tube T2 serves as an output terminal U for supplying a control voltage to the peripheral wall 10 of the nozzle.
  • the capacitor C is connected between the first end and the second end of the second switch tube T2.
  • the first switching transistor T1 when the selection voltage Vsel is input, the first switching transistor T1 is turned on, and the data voltage Vdata charges the capacitor C. At this time, a control voltage is applied to the peripheral wall 10 of the nozzle, thereby opening the ink outlet 30.
  • the first switching transistor T1 When the selected voltage Vsel is not input, the first switching transistor T1 is turned off, the data voltage Vdata cannot be applied to the control terminal of the second switching transistor T, the second switching transistor T2 is closed, and the capacitor C is discharged.
  • the control voltage of the peripheral wall 10 of the shower head disappears to cause the ink outlet 30 to close.
  • the capacitor C ensures a minimum differential pressure across the piezoelectric material to eliminate the addition The interference of the electric field.
  • the first and second switching tubes T1 and T2 are N-type field effect transistors.
  • the control terminal, the first terminal and the second terminal of the first and second switching transistors T1 and T2 are respectively a gate, a drain and a source of the transistor.
  • the first and second switching transistors T1 and T2 may also be other types of transistors.

Landscapes

  • Coating Apparatus (AREA)
  • Ink Jet (AREA)

Abstract

一种应用于喷墨打印设备（400）的喷墨打印喷头（100），包括喷头周壁（10）及位于喷头周壁（10）的两相对端的油墨入口（20）及油墨出口（30），所述喷头周壁（10）内形成有容纳空间（12），以收容经由油墨入口（20）进入的油墨，油墨出口（30）用于将油墨喷出至基材上，喷头周壁（10）还连接至喷墨打印设备（400）的控制单元，用于接收控制电压，以根据控制电压来改变油墨出口（30）的开口宽度。所述喷墨打印喷头（100）可适应高精度的打印需求，并且可以适应不同尺寸的油墨颗粒从油墨出口（30）流出，不会造成阻塞。还公开了一种喷墨打印设备（400）。

Description

一种喷墨打印喷头及喷墨打印设备 技术领域
本发明涉及打印领域，尤其涉及一种喷墨打印喷头及喷墨打印设备。
背景技术
喷墨打印机是在针式打印机之后发展起来的，采用非打击的工作方式。比较突出的优点有体积小、操作简单方便、打印噪音低、使用专用纸张时可以打出和照片相媲美的图片等等。现有的喷墨打印机通常是通过在墨水腔施加一定的压力，将墨水挤出形成墨滴，实现打印效果。然而，这种压力挤出的打印方式不容易控制滴落的墨水量，导致无法适应高精度的打印需求，特别是触摸屏用触控电极的打印精度需求。
发明内容
本发明实施例提供一种喷墨打印喷头，满足高精度打印需求。
本发明实施例还提供一种喷墨打印设备。
本发明提供一种喷墨打印喷头，应用于喷墨打印设备，所述喷墨打印喷头包括喷头周壁及位于所述喷头周壁的两相对端的油墨入口及油墨出口，所述喷头周壁内形成有容纳空间，以收容经由及所述油墨入口进入的油墨，所述油墨出口用于将所述油墨喷出至基材上，所述喷头周壁电连接至所述喷墨设备的控制单元，用于接收控制电压，以根据控制电压来改变所述油墨出口的开口宽度。
其中，所述喷头周壁是由压电材料构成。
其中，所述喷头周壁包括第一侧壁及第二侧壁，控制单元控制第一侧壁与第二侧壁相互靠拢或分离来改变油墨出口的宽度。
其中，第一侧壁与第二侧壁靠拢时油墨出口封闭，第一侧壁与第二侧壁分离时油墨出口开启。
其中，油墨为带电油墨。
其中，油墨通过电场驱动从油墨出口滴落。
其中，油墨包括具有酸性官能团及碱性官能团的导电聚合物。
其中，油墨通过加入碱性物质带电。
其中，油墨包括磺酸基，通过加入氨水带电。
其中，所述喷头周壁包括第一子周壁及第二子周壁，所述第一子周壁的第一端为所述油墨出口，所述第二子周壁连接所述第一子周壁的第二端，所述第一子周壁是由压电材料构成，所述第一子周壁电连接至所述控制单元。
其中，所述第二子周壁为非压电材料，第二子周壁围设形成油墨入口。
其中，所述喷墨打印喷头还包括内阀门，所述内阀门设置于所述第二子周壁上，所述内阀门具有限制口，以使从所述油墨入口流入的油墨经由所述限制口流出至所述油墨出口。
其中，所述内阀门还连接至所述控制单元，以使所述控制单元控制所述内阀门的限制口的启动。
其中，所述内阀门包括第一子门及第二子门，所述控制单元电连接所述第一子门及第二子门，以控制所述第一子门与所述第二子门闭合及断开，当所述第一子门及第二子门闭合时，所述限制口闭合，以禁止油墨流入所述油墨出口，当所述第一子门及第二子门打开时，所述第一及第二子门之间形成有所述限制口。
本发明提供一种喷墨打印设备，包括控制单元及上述的喷墨打印喷头。
其中，所述喷墨打印设备还包括油墨储存腔及入料腔，所述入料腔设置于所述油墨出口的下方，所述油墨存储腔用于存储油墨，所述油墨存储腔设置于所述油墨入口上方。
其中，所述喷墨打印设备还包括微电场发射板，所述微电场发射板用于在所述入料腔内产生电场，以驱动所述油墨从油墨出口滴落。
其中，微电场反射板位于入料腔下方。
其中，所述控制单元包括喷点电路，所述喷点电路包括第一开关管、第二开关管，所述第一开关管的控制端接收选取电压，所述第一开关管的第一端连接数据电压，所述第一开关管的第二端连接至所述第二开关管的控制端，所述第二开关管的第一端接收调节电压，所述第二开关管的第二端作为输出端，用于给所述喷头周壁提供控制电压。
其中，还包括连接在所述第二开关管的第一端及第二端之间的电容。
本发明的喷墨打印喷头，应用于喷墨打印设备，所述喷墨打印喷头包括喷 头周壁及位于所述喷头周壁的两相对端的油墨入口及油墨出口，所述喷头周壁内形成有容纳空间，以收容经由及所述油墨入口进入的油墨，所述油墨出口用于将所述油墨喷出至基材上，所述喷头周壁还连接至所述喷墨设备的控制单元，用于接收控制电压，以根据控制电压来改变所述油墨出口的开口宽度。由于所述油墨出口的开口宽度受控于所述控制单元，因此，可以精确地控制油墨的滴落量，从而满足高精度的打印需求。
附图说明
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是本发明第一方案第一实施例提供的一种喷墨打印喷头处于第一状态的示意图。
图2是本发明第一方案第一实施例提供的一种喷墨打印喷头处于第二状态的示意图。
图3本发明第一方案第二实施例提供的一种喷墨打印喷头处于第一状态的示意图。
图4是本发明第二方案实施例提供的一种喷墨打印设备的截面示意图。
图5是图4中喷点电路的电路图。
具体实施方式
下面将结合本发明实施方式中的附图，对本发明实施方式中的技术方案进行清楚、完整地描述。
请参阅图1，本发明第一方案实施例提供一种喷墨打印喷头100。所述喷墨打印喷头100应用于喷墨打印设备。所述喷墨打印喷头100包括喷头周壁10及位于所述喷头周壁10的两相对端的油墨入口20及油墨出口30。所述喷头周壁10内形成有容纳空间12，以收容经由及所述油墨入口20进入的油墨。所述油墨出口30用于将所述油墨喷出至基材(未示出)上。所述喷头周壁10电连接至所述喷墨设备的控制单元(未示出)，用于接收控制电压，以根据控 制电压来改变所述油墨出口30的开口宽度。
需要说明的是，所述油墨为导电油墨。所述导电油墨采用PEDOT：PSS(聚乙烯二氧噻吩掺杂聚苯乙烯磺酸)形成的溶胶，这种导电聚合物自身是既含有酸性官能团，又含有碱性官能团，因此存在着等电点(在一定的PH下是呈现电中性的)，其具备越过这个范围就呈现非电中性的特性。在本实施例中，基于工艺可操作性将PH定为10，并采用氨水调整导电油墨的PH值。采用氨水的原因在于氨水为易挥发性物质，其在油墨滴落及凝固的过程中会挥发出去，不会对最终的打印效果造成太大的影响。油墨的胶体中含有磺酸基，其是酸性官能团，属于亲水集团，因此，通过向胶体中加入氨水NH3·H2O以调整胶体离开等电点，使得油墨带电。油墨用于形成触摸屏的触控电极、引线等线路。
在本实施例中，所述喷墨打印喷头100呈锥台状。所述喷墨打印喷头100可以由两个对半的半周壁(比如两个半圆形的半周壁)组成。所述喷头周壁10在所述基材上的投影为圆形。所述喷头周壁10的一端为所述油墨入口20。所述喷头周壁10的另一端为所述油墨出口30。所述油墨入口20的口径大于所述油墨出口30的口径。在其他实施例中，所述喷墨打印喷头100的形状可以根据实际需要改变。
其中，所述喷头周壁10是由压电材料构成。具体可以为压电陶瓷材料。所述压电材料可在受到电压的情况下发生变形。因此，当所述控制单元未施加电压给所述喷头周壁10时，所述油墨出口30聚拢于一起而封闭(参见图1)，保持所述容纳空间12里面的油墨不会滴落。当所述控制单元施加电压给所述喷头周壁10时，所述油墨出口30发生形变，所述油墨出口30张开(参见图2)，从而使所述容纳空间12内的油墨从所述油墨出口30滴落。且当所述控制单元施加给所述喷头周壁10的电压的不同，所述油墨出口30的形变量不同，从而所述油墨出口30张开的程度不同，进而从所述油墨出口30流出的油墨量也不同。同时所述油墨出口30的开口程度可以通过所述控制单元进行调节，因此，可以精确地控制油墨的滴落量，使得实现高精度的打印效果。并且，所述喷墨打印喷头100适用不同尺寸的油墨颗粒从所述油墨出口30流出，不会造成油墨的阻塞，从而满足打印需求。
所述喷头周壁10可以是一整块连续的压电材料，其通过压电效应向周向张开或收缩，从而改变油墨出口30的大小。当然，所述喷头周壁10也可以包 括由压电材料制造的两个独立的侧壁(即所述喷头周壁10包括第一侧壁及第二侧壁)，通过控制单元控制两个侧壁(即第一侧壁及第二侧壁)的电压，使得两个侧壁相互靠拢或分离，从而改变油墨出口30的大小。当两个侧壁靠拢时，油墨出口30被封闭；当两个侧壁分离时，油墨出口30开启。当然，侧壁的数量也并不局限于两个，也可以为三个、四个等多个，侧壁数量越多，对于油墨出口30的开启程度控制越为精确。
另一实施方式中，所述喷头周壁10包括第一子周壁14及第二子周壁16。所述第一子周壁14的第一端为所述油墨出口30。所述第二子周壁16连接所述第一子周壁14的第二端。所述第一子周壁14是由压电材料构成。所述第一子周壁14电连接至所述控制单元。所述第二子周壁16为非压电材料，所述第二子周壁16围设形成油墨入口20。所述控制单元控制第一子周壁14形变，从而改变油墨出口30大小。所述第二子周壁16则不受控制单元控制，也就是说油墨入口20大小并不会变化。
请参阅图3，本发明第一方案第二实施例提供一种喷墨打印喷头200。所述第二实施例提供的喷墨打印喷头200与所述第一实施例提供的喷墨打印喷头100相似，两者的区别在于：所述喷墨打印喷头100还包括内阀门40。所述内阀门40设置于所述第二子周壁16上，所述内阀门40具有限制口(未示出)，以使从所述油墨入口20流入的油墨经由所述限制口流出至所述油墨出口30。
在本实施例中，所述内阀门40还电连接至所述控制单元，以使所述控制单元控制所述内阀门40的限制口的启闭。其中，所述内阀门40为非压电材料。
需要说明的是，当所述喷头周壁10全部或所述第一子周壁14全部采用压电材料可能会导致下墨量太大不好控制。所述内阀门40可以在给压电材料施加电压时打开，供油墨流入内阀门40下方的空间内，且所述内阀门40打开的程度受控于所述控制单元，从而可以对油墨流入内阀门40下方的空间的油墨量进行限流。另外，当没有所述控制单元施加电压给压电材料时，内阀门40还可以继续打开一段时间，使部分油墨进入内阀门40下方的空间内，然后再关闭。这些进入内阀门40下方空间的部分油墨可供下次压电材料打开时直接使用，而不用等到内阀门40上方的油墨掉落，从而节省了喷墨时间。
在其他实施方式中，所述内阀门40也可以不电连接至所述控制单元。所 述内阀门40的限制口一直处于开启状态，以对所述油墨进行限流。
具体地，所述内阀门40包括第一子门41及第二子门42。所述控制单元电连接所述第一及第二子门41及42，以控制所述第一子门41与所述第二子门42闭合及打开。当所述第一及第二子门41及42闭合时，所述限制口封闭，以禁止油墨流入所述油墨出口。当所述第一及第二子门41及42打开时，所述限制口开启。
在本实施例中，所述第一及第二子门41及42电连接至所述控制单元，当所述控制单元控制所述第一及第二子门41及42闭合时，所述内阀门40将所述容纳空间12隔离呈两个独立的空间，一个与油墨入口20连通，另外一个与油墨出口30连通。在其他实施例中，所述第一及第二子门41及42也可以不电连接至所述控制单元，第一及第二子门41及42处于始终打开状态，且通过设置所述第一及第二子门41及42打开的程度，使得所述内阀门40可以起到限流的作用。
请参阅图4，本发明第二方案实施例提供一种喷墨打印设备400。所述喷墨打印设备400包括控制单元410喷墨打印喷头。其中，所述喷墨打印喷头可以为上述第一方案实施例提供的喷墨打印喷头100。由于所述喷墨打印喷头已在上述实施例中进行了详细描述，故在此不再赘述。
在本实施例中，所述喷墨打印设备400包括控制单元410及所述喷墨打印喷头100。其中，所述喷墨打印喷头100的喷头周壁10是由压电材料构成。所述压电材料可在受到电压的情况下发生变形。因此，当所述控制单元410未施加电压给所述喷头周壁10时，所述油墨出口30聚拢于一起而封闭，保持所述容纳空间12里面的油墨不会滴落。当所述控制单元410施加电压给所述喷头周壁10时，所述油墨出口30发生形变，所述油墨出口30张开，从而使所述容纳空间12内的油墨从所述油墨出口30滴落。且当所述控制单元410施加给所述喷头周壁10的电压的不同，所述油墨出口30的形变量不同，从而所述油墨出口30张开的程度不同，进而从所述油墨出口30流出的油墨量也不同。同时所述油墨出口30的开口程度可以通过所述控制单元410进行调节，因此，所述喷墨打印设备400适用不同尺寸的油墨颗粒从所述油墨出口30流出，不会造成油墨的阻塞，从而满足打印需求。
具体地，所述喷墨打印设备400还包括微电场发射板420、油墨储存腔430 及入料腔440。所述油墨存储腔430用于存储油墨并与油墨入口20连通。所述油墨存储腔430内的油墨通过上方气压挤压并通过层面张力扩散进入喷墨打印喷头100内。所述控制单元410及所述油墨存储腔430均设置于所述油墨入口20上方，所述入料腔440及所述微电场发射板420依次设置于所述油墨出口30的下方。所述微电场发射板420用于在所述入料腔440内产生垂直于所述油墨流动方向的静电场，以对所述油墨产生自油墨入口20到油墨出口30的力，从而驱动所述油墨从所述油墨出口30滴落。
所述入料腔440位于所述微电场发射板420上方，用于供要附着油墨的基材放入。其中，所述油墨为带电油墨。
需要说明的是，由于油墨的直径较小，在空气阻力的作用下，仅依靠油墨本身的重力不易掉落，因此，通过利用所述微电场发射板420来产生电场，从而驱动油墨，使其能准确地落在所需要的位置。也就是说，通过微电场发射板420所产生的电场，驱动油墨朝向基材移动，使油墨滴落在基材表面。可以理解地，微电场发射板420也可以放在喷墨打印设备400的侧面或者位于油墨存储腔430的上方，只需要确保能够产生将油墨朝向基材驱动的电场即可。当然，如果油墨直径较大，其在重力作用下也可以掉落在基材的特定位置上，此时就无需使用微电场发射板420，也不需要给油墨带电。
请参阅图5，所述控制单元410包括喷点电路450。所述喷点电路450包括第一开关管T1、第二开关管T2及电容C。所述第一开关管T1的控制端接收选取电压Vsel。所述第一开关管T1的第一端连接数据电压Vdata。所述第一开关管T1的第二端连接至所述第二开关管T2的控制端，所述第二开关管T2的第一端接收调节电压Vdd。所述第二开关管T2的第二端作为输出端U，用于给所述喷头周壁10提供控制电压。所述电容C连接在所述第二开关管T2的第一端及第二端之间。
需要说明的是，当输入选取电压Vsel，第一开关管T1导通，所述数据电压Vdata对电容C进行充电，此时喷头周壁10上被施加控制电压，从而开启油墨出口30。当未输入选取电压Vsel，第一开关管T1截止，所述数据电压Vdata无法施加到所述第二开关管T的控制端，所述第二开关管T2闭合，所述电容C放电，所述喷头周壁10的控制电压消失而使得所述油墨出口30闭合。其中，所述电容C会保证在压电材料两端有一个最小压差，来消除外加 电场的干扰。
在本实施例中，所述第一及第二开关管T1及T2为N型场效应管。所述第一及第二开关管T1及T2的控制端、第一端及第二端分别为所述晶体管的栅极、漏极及源极。在其他实施例中，所述第一及第二开关管T1及T2也可以为其他类型的晶体管。
以上所述是本发明的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也视为本发明的保护范围。

Claims (20)

  1. 一种喷墨打印喷头，应用于喷墨打印设备，其特征在于：所述喷墨打印喷头包括喷头周壁及位于所述喷头周壁的两相对端的油墨入口及油墨出口，所述喷头周壁内形成有容纳空间，以收容经由及所述油墨入口进入的油墨，所述油墨出口用于将所述油墨喷出至基材上，所述喷头周壁电连接至所述喷墨设备的控制单元，用于接收控制电压，以根据控制电压来改变所述油墨出口的开口宽度。
  2. 如权利要求1所述的喷墨打印喷头，其特征在于，所述喷头周壁是由压电材料构成。
  3. 如权利要求1所述的喷墨打印喷头，其特征在于，所述喷头周壁包括第一侧壁及第二侧壁，控制单元控制第一侧壁与第二侧壁相互靠拢或分离来改变油墨出口的宽度。
  4. 如权利要求3所述的喷墨打印喷头，其特征在于，第一侧壁与第二侧壁靠拢时油墨出口封闭，第一侧壁与第二侧壁分离时油墨出口开启。
  5. 如权利要求1所述的喷墨打印喷头，其特征在于，油墨为带电油墨。
  6. 如权利要求6所述的喷墨打印喷头，其特征在于，油墨通过电场驱动从油墨出口滴落。
  7. 如权利要求5所述的喷墨打印喷头，其特征在于，油墨包括具有酸性官能团及碱性官能团的导电聚合物。
  8. 如权利要求7所述的喷墨打印喷头，其特征在于，油墨通过加入碱性物质带电。
  9. 如权利要求8所述的喷墨打印喷头，其特征在于，油墨包括磺酸基，通过加入氨水带电。
  10. 如权利要求1至9任一项所述的喷墨打印喷头，其特征在于，所述喷头周壁包括第一子周壁及第二子周壁，所述第一子周壁的第一端为所述油墨出口，所述第二子周壁连接所述第一子周壁的第二端，所述第一子周壁是由压电材料构成，所述第一子周壁电连接至所述控制单元。
  11. 如权利要求10所述的喷墨打印喷头，其特征在于，所述第二子周壁为非压电材料，第二子周壁围设形成油墨入口。
  12. 如权利要求10所述的喷墨打印喷头，其特征在于，所述喷墨打印喷头还包括内阀门，所述内阀门设置于所述第二子周壁上，所述内阀门具有限制口，以使从所述油墨入口流入的油墨经由所述限制口流出至所述油墨出口。
  13. 如权利要求12所述的喷墨打印喷头，其特征在于，所述内阀门还电连接至所述控制单元，以使所述控制单元控制所述内阀门的限制口的启动。
  14. 如权利要求13所述的喷墨打印喷头，其特征在于，所述内阀门包括第一子门及第二子门，所述控制单元电连接所述第一子门及第二子门，以控制所述第一子门与所述第二子门闭合及断开，当所述第一子门及第二子门闭合时，所述限制口闭合，以禁止油墨流入所述油墨出口，当所述第一子门及第二子门打开时，所述第一子门及第二子门之间形成有所述限制口。
  15. 一种喷墨打印设备，包括控制单元及如权利要求1-14任一项所述的喷墨打印喷头。
  16. 如权利要求15所述的喷墨打印设备，其特征在于，所述喷墨打印设备还包括油墨储存腔及入料腔，所述入料腔设置于所述油墨出口的下方，所述油墨存储腔用于存储油墨，所述油墨存储腔设置于所述油墨入口上方。
  17. 如权利要求16所述的喷墨打印设备，其特征在于，所述喷墨打印设备还包括微电场发射板，所述微电场发射板用于在所述油墨出口产生电场，以驱动所述油墨从油墨出口滴落。
  18. 如权利要求17所述的喷墨打印设备，其特征在于，微电场反射板位于入料腔下方。
  19. 如权利要求15所述的喷墨打印设备，其特征在于，所述控制单元包括喷点电路，所述喷点电路包括第一开关管、第二开关管，所述第一开关管的控制端接收选取电压，所述第一开关管的第一端连接数据电压，所述第一开关管的第二端连接至所述第二开关管的控制端，所述第二开关管的第一端接收调节电压，所述第二开关管的第二端作为输出端，用于给所述喷头周壁提供控制电压。
  20. 如权利要求19所述的喷墨打印设备，其特征在于，还包括连接在所述第二开关管的第一端及第二端之间的电容。
PCT/CN2016/109562 2016-12-13 2016-12-13 一种喷墨打印喷头及喷墨打印设备 WO2018107347A1 (zh)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201680036570.3A CN107820464B (zh) 2016-12-13 2016-12-13 一种喷墨打印喷头及喷墨打印设备
PCT/CN2016/109562 WO2018107347A1 (zh) 2016-12-13 2016-12-13 一种喷墨打印喷头及喷墨打印设备

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2016/109562 WO2018107347A1 (zh) 2016-12-13 2016-12-13 一种喷墨打印喷头及喷墨打印设备

Publications (1)

Publication Number Publication Date
WO2018107347A1 true WO2018107347A1 (zh) 2018-06-21

Family

ID=61600939

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2016/109562 WO2018107347A1 (zh) 2016-12-13 2016-12-13 一种喷墨打印喷头及喷墨打印设备

Country Status (2)

Country Link
CN (1) CN107820464B (zh)
WO (1) WO2018107347A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117261452A (zh) * 2023-11-21 2023-12-22 江苏皓兮新能源技术开发有限公司 一种太阳能光伏电池印刷设备及印刷方法

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109980084B (zh) * 2019-04-09 2020-12-01 京东方科技集团股份有限公司 喷墨打印头和喷墨打印设备
CN112373033B (zh) * 2020-12-02 2025-01-28 上海建工建材科技集团股份有限公司 出口尺寸可智能调控的3d打印喷头及其使用方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0145131A2 (en) * 1983-08-31 1985-06-19 Nec Corporation On-demand type ink-jet print head having an air flow path
EP2583831A1 (en) * 2010-03-19 2013-04-24 Fujifilm Corporation Bonded circuits and seals in a printing device
CN105584219A (zh) * 2016-03-21 2016-05-18 浙江百事德办公设备有限公司 一种彩色打印机喷头
CN205416753U (zh) * 2016-03-21 2016-08-03 浙江百事德办公设备有限公司 一种彩色打印机喷头
CN106042646A (zh) * 2016-06-21 2016-10-26 祖海娇 一体化喷雾式打印喷头

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100503249C (zh) * 2004-12-20 2009-06-24 柯尼卡美能达控股株式会社 喷液头、喷液装置和喷液方法
DE102006001223A1 (de) * 2006-01-10 2007-07-12 Khs Ag Vorrichtung zum Bedrucken von Flaschen oder dergleichen Behälter

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0145131A2 (en) * 1983-08-31 1985-06-19 Nec Corporation On-demand type ink-jet print head having an air flow path
EP2583831A1 (en) * 2010-03-19 2013-04-24 Fujifilm Corporation Bonded circuits and seals in a printing device
CN105584219A (zh) * 2016-03-21 2016-05-18 浙江百事德办公设备有限公司 一种彩色打印机喷头
CN205416753U (zh) * 2016-03-21 2016-08-03 浙江百事德办公设备有限公司 一种彩色打印机喷头
CN106042646A (zh) * 2016-06-21 2016-10-26 祖海娇 一体化喷雾式打印喷头

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117261452A (zh) * 2023-11-21 2023-12-22 江苏皓兮新能源技术开发有限公司 一种太阳能光伏电池印刷设备及印刷方法
CN117261452B (zh) * 2023-11-21 2024-03-01 江苏皓兮新能源技术开发有限公司 一种太阳能光伏电池印刷设备及印刷方法

Also Published As

Publication number Publication date
CN107820464B (zh) 2020-04-14
CN107820464A (zh) 2018-03-20

Similar Documents

Publication Publication Date Title
US9156262B2 (en) Fluid ejection device with two-layer tophat
CN102186675B (zh) 流体喷射分配装置
WO2018107347A1 (zh) 一种喷墨打印喷头及喷墨打印设备
JP2010241003A (ja) 液滴吐出ヘッド
JP2009154123A (ja) 高粘度流体吐出装置および高粘度流体吐出方法
US20100245465A1 (en) Liquid supplying apparatus and liquid ejecting apparatus
US8449053B2 (en) Liquid ejecting apparatus and liquid charging method
US20050275679A1 (en) Removing gas from a printhead
BR112021015384A2 (pt) Circuito integrado com acionadores de endereço para matriz fluídica
US10518529B2 (en) Liquid discharge device
CN107206790A (zh) 带打印机流体止回阀的打印头
CN108656733A (zh) 液体喷出装置
CN102343717B (zh) 液体喷射设备以及液体喷射方法
CN104339869A (zh) 液体喷射头以及液体喷射装置
CN108621573B (zh) 维护装置和液体喷出装置
US10029471B2 (en) Liquid ejecting apparatus and method for controlling liquid ejecting apparatus
JP2018165005A (ja) 液体吐出装置および液体吐出方法
US20090135228A1 (en) Inkjet printhead and method of ejecting ink using the same
US10589521B2 (en) Fluid ejection via different field-effect transistors
CN109070616A (zh) 选择性地触发流体循环元件
CN107548360B (zh) 可喷射材料喷发腔室的止回阀
JP2013248894A (ja) 液体噴射装置
JP2018008379A (ja) 液体噴射装置
US10029457B2 (en) Pre-charge line routed over pre-charge transistor
JP2004216898A (ja) イオン風を利用した流体吐出方法及びこれを採用したインクジェットプリントヘッド

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 16924016

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

32PN Ep: public notification in the ep bulletin as address of the adressee cannot be established

Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC

122 Ep: pct application non-entry in european phase

Ref document number: 16924016

Country of ref document: EP

Kind code of ref document: A1