WO2011147240A1 - 喷墨打印机墨盒 - Google Patents

喷墨打印机墨盒 Download PDF

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Publication number
WO2011147240A1
WO2011147240A1 PCT/CN2011/073236 CN2011073236W WO2011147240A1 WO 2011147240 A1 WO2011147240 A1 WO 2011147240A1 CN 2011073236 W CN2011073236 W CN 2011073236W WO 2011147240 A1 WO2011147240 A1 WO 2011147240A1
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Prior art keywords
ink
air guiding
porous foam
foam block
chamber
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PCT/CN2011/073236
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English (en)
French (fr)
Inventor
王铖
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珠海天威飞马打印耗材有限公司
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Publication of WO2011147240A1 publication Critical patent/WO2011147240A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/17—Ink jet characterised by ink handling
    • B41J2/175—Ink supply systems ; Circuit parts therefor
    • B41J2/17503—Ink cartridges
    • B41J2/17513—Inner structure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/17—Ink jet characterised by ink handling
    • B41J2/175—Ink supply systems ; Circuit parts therefor
    • B41J2/17503—Ink cartridges
    • B41J2/1752—Mounting within the printer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/17—Ink jet characterised by ink handling
    • B41J2/175—Ink supply systems ; Circuit parts therefor
    • B41J2/17503—Ink cartridges
    • B41J2/17553—Outer structure

Definitions

  • This invention relates to ink jet printer cartridges.
  • the recording head adapted to the ink cartridge is disposed on the inkjet printer carriage, and the ink cartridge as the ink accommodating device is detachably matched with the inkjet printer carriage, and through the ink supply needle and the corresponding ink flow path The nozzles on the recording head remain connected.
  • the present invention is based on a Chinese utility model patent application filed on May 27, 2010, with the application number 201020205843.2, the content of which is hereby incorporated herein by reference.
  • An inkjet printer which is usually printed by an ink container such as an ink cartridge, supplies ink to a recording head via a corresponding ink flow conduit, and ejects ink from a nozzle provided on the recording head under the driving of a printing signal. Record on a recording medium such as paper to complete the recording of characters or graphics.
  • a recording medium such as paper to complete the recording of characters or graphics.
  • Common commercially available inkjet printers can be classified into piezoelectric inkjet printers and bubble jet printers depending on the configuration of their nozzles.
  • Piezoelectric inkjet printers are provided with one or more piezoelectric crystals on each side of the ink flow pipe near the nozzle of the recording head.
  • the piezoelectric crystal is controlled by a data-modulated printing signal to cause contraction or expansion deformation, and the ink in the extrusion nozzle is ejected from the nozzle to form fine droplets, which are splashed onto a page of a recording medium such as paper to form a recording dot.
  • a bubble jet printer has a recording head structure similar to that of a piezoelectric ink jet printer. The difference is that the bubble jet printer is provided with a heating electrode on the inner wall or the outer wall of the ink flow pipe near the nozzle of the recording head.
  • the data modulated electrical pulse signal is sent to the heating electrode of the nozzle, and the heating electrode is rapidly heated to rapidly vaporize the ink near the nozzle to form a bubble.
  • the pressure generated by the expansion of the bubble causes the ink to form a fine droplet of ink from the nozzle and splashes onto the sheet of paper. After the electric pulse disappears, the ink vapor condenses, and the ink in the nozzle is maintained at a level close to the outer surface of the nozzle by the surface tension.
  • the negative pressure formed after the recording head draws ink directs the ink in the ink reservoir to flow into the ink flow conduit where the nozzle is located.
  • the ink container or ink cartridge that matches it needs to consider the following problem, that is, the ink outlet of the ink cartridge should be turned on when there is a print job, in a timely manner
  • the nozzles of the inkjet printer supply ink and are turned off in the absence of a print job, while interrupting the flow of ink and preventing outflow of ink.
  • a check valve is often used inside to control the flow state of the ink described above.
  • the ink cartridge check valve can achieve the above functions is mainly because the one-way valve is composed of a sealing member and an elastic member such as a spring, or is directly made of a material having elasticity characteristics such as rubber.
  • the use of elastic members or elastic materials can ensure that when the pressure difference between the ink cartridge and the print head is less than a predetermined value, the elastic force generated by the elasticity of the material itself can be forced to force the check valve to be closed; When the pressure difference between the print head and the print head exceeds a certain predetermined value, the elastic deformation of the material itself can be relied upon to force the check valve to be open.
  • the spring or rubber that requires its components must be able to provide reliable and stable spring force or deformation due to the constant pressure difference, and not due to long-term aging of the material, or Potential hazards such as chemical reactions with the ink solution and sealing with other components, causing a wide range of variations in the elastic force or deformation provided, resulting in the check valve not being able to open at the desired set point or shut down.
  • the check valve should meet the extremely high requirements in terms of material characteristics, assembly process, and elastic response in response to the above requirements of the opening and closing function, which undoubtedly increases the production and use of the ink cartridge. Larger cost.
  • an object of the present invention is to provide a simple ink jet printer cartridge which can effectively control the flow state of ink without using a one-way valve.
  • An ink jet printer cartridge designed according to the above object of the present invention comprises a casing and a lid.
  • An ink storage chamber for storing ink is disposed in the casing.
  • the lid is sealed to one side of the casing and becomes a side wall of the ink storage chamber.
  • An ink outlet is formed on the side of the casing opposite to the lid of the ink storage chamber.
  • An air guiding chamber is also provided in the casing.
  • the air guiding chamber is filled with a porous foam block.
  • a liquid is adsorbed in the porous foam block.
  • the outside atmosphere communicates with the air guiding chamber from the air guiding port through the first air guiding passage via the lower surface of the porous foam block.
  • One end of the second air guiding passage communicates with the air guiding chamber above the upper surface of the porous foam block in the direction of gravity, and the other end communicates with the ink storing chamber below the upper surface of the porous foam block in the direction of gravity.
  • the middle portion of the first air guiding passage is expanded to become a first air chamber
  • the middle portion of the second air guiding passage is expanded to become a second air chamber
  • the position of the lower surface of the porous foam block in the direction of gravity is between the bottom wall of the ink reservoir and the ink outlet.
  • the port of the first air guiding passage communicating with the air guiding chamber and the port connecting the second air guiding passage to the ink storage chamber are simultaneously located on the same horizontal surface near the lower surface of the porous foam block in the direction of gravity.
  • the porous foam block is a sponge block.
  • the inkjet printer cartridge described above has an ink injecting port connected to the ink storage chamber and the external environment on the lid thereof.
  • the ink filling port is closed by an openable plug.
  • an air guiding chamber with a porous foam block is added between the air guiding port and the ink storage chamber, and the porous foam block, that is, the sponge block, is filled with liquid, and the first air guiding passage is connected.
  • the port connecting the port of the air guiding chamber and the port connecting the second air guiding channel to the ink storage chamber is disposed at the bottom of the ink cartridge, that is, below the lower surface of the sponge block, so that there is a gap between the ink outlet of the ink cartridge and the air guiding port.
  • the ink cartridge has the advantages of simple structure, low cost, and stable and reliable operation state of keeping the ink with moderate negative pressure.
  • Figure 1 is a perspective view of an ink jet printer cartridge of the present invention
  • Figure 2 is a cross-sectional view of the ink jet printer cartridge of the present invention.
  • FIGS 1 and 2 there are shown perspective and cross-sectional views, respectively, of an ink jet printer cartridge of the present invention.
  • the ink cartridge 100 is composed of an ink cartridge holder 101, a casing 102, and a lid 103.
  • the assembled body 102 and the lid 103 are supported by the ink cartridge holder 101.
  • the casing 102 is made of plastic and has a flat shape.
  • An ink storage chamber 105 for storing the ink 104 is disposed therein.
  • the ink storage chamber 105 is substantially a cubic cavity, and a part of the cavity is in an open state. In a state in which the flat-plate-shaped cover 103 is sealed on the casing 102, the open portion of the cavity is closed to be stored.
  • the ink chamber 105 has a sealed chamber in addition to the ink outlet 106 and the second air passage 107 described below, and the lid 103 also serves as a side wall of the ink reservoir 105.
  • An ink outlet 106 is formed in the cartridge body 102 on a side of the ink reservoir 105 opposite the lid 103 to facilitate supply of ink to the inkjet printer via the ink outlet 106.
  • An ink filling port 109 that communicates with the ink storage chamber 105 and the external environment is opened on the lid 103 thereof.
  • the ink filling port 109 is closed by a plug such as an openable soft rubber so that ink can be replenished to the ink storage chamber 105 through the ink filling port 109 when the ink contained in the ink storage chamber 105 is exhausted.
  • an air guiding chamber 110 is also provided inside the casing 102.
  • the air guiding chamber 110 is filled with a sponge block 111.
  • the sponge block 111 has a liquid adsorbed therein, and is preferably an ink which is homogenous to the ink contained in the ink storage chamber 105.
  • the air guiding port 112 is opened on the cover 103, which is located above the upper surface of the sponge block 111 in the direction of gravity.
  • the air guide port 112 communicates with the air guiding chamber 110 through the lower surface of the sponge block 111 through the first air guiding passage 113.
  • One end of the second air guiding passage 107 communicates with the air guiding chamber 110 above the upper surface of the sponge block 111 in the direction of gravity, and the other end thereof communicates with the ink storing chamber 105 below the upper surface of the sponge block 111 in the direction of gravity.
  • the position of the lower surface of the sponge block 111 in the direction of gravity is between the bottom wall of the ink reservoir 105 and the ink outlet 106.
  • the middle portion of the first air guiding passage 113 is expanded into a first air chamber 114 after being laterally expanded, and the middle portion of the second air guiding passage 107 is expanded into a second air chamber 108 after being laterally expanded.
  • the first air guiding channel 113 and the second air guiding channel 107 are expanded in the lateral dimension, it is convenient to provide a stronger buffering capability when the large pressure fluctuation occurs inside the ink cartridge 100 to prevent the ink from overflowing to the air guiding port 112.
  • the position of the port of the second air guiding passage 107 communicating with the ink storage chamber 105 in the direction of gravity is preferably selected to be below the lower surface of the sponge block 111, and first
  • the air guiding passage 113 communicates with the port of the air guiding chamber 110 and the port of the second air guiding passage 107 that communicates with the ink storage chamber 105, and both of them are located on the same horizontal surface near the lower surface of the sponge block 111 in the direction of gravity.
  • an air guiding chamber with a porous foam block is added between the air guiding port and the ink storage chamber, and the porous foam block, that is, the sponge block, is filled with liquid, and the first air guiding passage is connected.
  • the port connecting the port of the air guiding chamber and the port connecting the second air guiding channel to the ink storage chamber is disposed at the bottom of the ink cartridge, that is, below the lower surface of the sponge block, so that there is a gap between the ink outlet of the ink cartridge and the air guiding port.
  • the ink cartridge has the advantages of simple structure and low cost, and has the advantages of keeping the ink with moderate negative pressure and stable and reliable working state.

Landscapes

  • Ink Jet (AREA)

Description

喷墨打印机墨盒 技术领域
本发明涉及喷墨打印机墨盒。同该墨盒适配的记录头被设置于喷墨打印机字车上，作为墨水容纳器件的墨盒则以可拆卸的方式同喷墨打印机字车相匹配，并通过供墨针和相应墨水流动通路同记录头上的喷嘴保持连通。本发明基于申请日为2010年05月27日、申请号为201020205843.2的中国实用新型专利申请，该申请的内容作为与本发明密切相关的参考文献引入本文。
背景技术
喷墨打印机，其打印方式通常是由墨盒之类的墨水容器提供墨源，经由相应的墨水流动管道将墨水输运至记录头，在打印信号的驱动下将墨水自记录头上设置的喷嘴喷射至纸张等记录介质上，来完成字符或图形的记录。常见的市售喷墨打印机根据其喷嘴的结构形式，可以分为压电式喷墨打印机和气泡式喷墨打印机。
压电式喷墨打印机，是在其记录头喷嘴附近的墨水流动管道两侧各设置一块或多块压电晶体。压电晶体受到由数据调制的打印信号控制，产生收缩或膨胀变形，挤压喷嘴中的墨水自喷嘴射出后形成微细的液滴，溅落至记录介质例如纸张的页面上，形成一个记录点。
气泡式喷墨打印机，其记录头结构与压电式喷墨打印机相似。它们的差别是，气泡式喷墨打印机在记录头喷嘴附近的墨水流动管道内壁或外壁上设置了加热电极。数据调制的电脉冲信号被送到喷嘴的加热电极上，加热电极快速升温，使喷嘴附近的墨水迅速汽化，形成汽泡。汽泡膨胀产生的压力使墨水自喷嘴射出后形成一个个微细的墨滴，溅落至纸张页面上。电脉冲消失后，墨水蒸汽凝聚，喷嘴内的墨水通过表面张力维持在与喷嘴外表面齐口的水平。记录头抽取墨水后形成的负压引导储墨腔内的墨水流入喷嘴所在的墨水流动管道。
无论是压电式喷墨打印机，还是气泡式喷墨打印机，与其相匹配的墨水容器或墨盒均需要考虑以下问题，即墨盒的出墨口应当在有打印任务时处于开启状态，以适时地向喷墨打印机的喷嘴供应墨水，而在无打印任务时处于关闭状态，以及时掐断墨水的流动和防止墨水外流。现有喷墨打印机使用的墨盒，较多地在其内部使用了单向阀来实现前述墨水流动状态的控制。
墨盒单向阀之所以能实现上述功能，主要是因为单向阀由密封部件以及弹性部件，例如弹簧组成，或者是直接采用具有弹性特点的材料，例如橡胶制成。弹性部件或弹性材料的使用，均可保证在墨盒与打印头之间的压强差小于某个预定值时，能够依靠材料自身的弹性所产生的弹力，迫使单向阀处于关闭状态；而当墨盒与打印头之间的压强差超过某个预定值时，又能够依靠材料自身的弹性形变，迫使单向阀处于打开状态。
 技术问题
鉴于墨盒单向阀所必须具有的开启/关闭功能，要求其组成部分的弹簧或橡胶必须能够完成因压强差的不断变化而提供可靠和稳定的弹力或形变，并且不能因材料的长期老化、或与墨水溶液间的化学反应、以及与其他部件的密封性配合等潜在隐患，造成其所提供的弹力或形变发生较大范围的变动，从而导致单向阀无法按预期的设定值进行开启或关闭。无疑地，单向阀在墨盒的实际应用中，因应于上述启闭功能的要求，在材料特性、装配工艺、弹性响应等方面应当满足极高的要求，这无疑给墨盒的生产和使用增加了较大的成本。
技术解决方案
针对上述问题，本发明目的在于提供一种无需使用单向阀即可有效控制墨水流动状态的结构简单的喷墨打印机墨盒。
按照上述本发明目的设计的喷墨打印机墨盒，包括盒体及盒盖。盒体内设置有用于贮存墨水的储墨腔。盒盖封接于盒体的一侧并成为储墨腔的一个侧壁。在盒体上于储墨腔背对于盒盖的一侧开设有出墨口。盒体内还设置有导气腔。导气腔内充填有多孔泡沫块。多孔泡沫块内吸附有液体。外界大气从导气口通过第一导气通道经由多孔泡沫块下表面连通导气腔。第二导气通道的一端在重力方向上于多孔泡沫块上表面的上方连通导气腔而其另一端在重力方向上于多孔泡沫块上表面的下方连通储墨腔。
前述喷墨打印机墨盒，其第一导气通道的中段扩大容积后成为第一气室，其第二导气通道的中段扩大容积后成为第二气室。
前述喷墨打印机墨盒，其多孔泡沫块下表面在重力方向上的位置介于储墨腔的底壁和出墨口之间。
前述喷墨打印机墨盒，其第一导气通道连通导气腔的端口与第二导气通道连通储墨腔的端口沿重力方向同时位于多孔泡沫块下表面附近的同一水平面上。
前述喷墨打印机墨盒，其多孔泡沫块为海绵块。
前述喷墨打印机墨盒，在其盒盖上开设有连通储墨腔和外部环境的注墨口。该注墨口由可启闭的塞封闭。
 有益效果
本发明的喷墨打印机墨盒，在导气口和储墨腔之间采用增设带有多孔泡沫块的导气腔，并在多孔泡沫块即海绵块内充注液体，同时把第一导气通道连通导气腔的端口与第二导气通道连通储墨腔的端口均设置在墨盒底部位置，即海绵块下表面以下的方式，这样就能够保证在墨盒出墨口和导气口之间有一个不小于同海绵块沿重力方向的高度对应的负压值，并且由于海绵对墨水具有的吸附作用，又提供一个额外的吸附力的束缚，进而保证了墨盒内的墨水不会从出墨口内泄漏至外部和在有打印输出需求时对打印头喷嘴的墨水供应。该墨盒结构简单，成本低廉，且保持墨水具有适度负压的工作状态稳定可靠。
附图说明
图1本发明喷墨打印机墨盒透视图；
图2本发明喷墨打印机墨盒剖视图。
 本发明的实施方式
下面结合附图详细描述本发明喷墨打印机墨盒。
参见图1、2，其分别示出本发明喷墨打印机墨盒的透视图和剖视图。
该墨盒100由墨盒支架101、盒体102及盒盖103构成。完成组配后的盒体102及盒盖103被支承于墨盒支架101上。
盒体102采用塑料制备，外形呈扁立方体。其内设置有用于贮存墨水104的储墨腔105。储墨腔105基本为立方体状的空腔，该空腔的一部分呈开放状态，在平板形状的盒盖103封接于盒体102上的状态下，前述空腔的开放部分被封闭，使储墨腔105除了具有下文描述的出墨口106和第二导气通道107之外呈密封的腔室，盒盖103也相应地成为储墨腔105的一个侧壁。在盒体102上于储墨腔105背对于盒盖103的一侧开设有出墨口106，以便于经由此出墨口106向喷墨打印机提供墨水。在其盒盖103上开设有连通储墨腔105和外部环境的注墨口109。注墨口109由可启闭的软胶之类的塞封闭，以便在储墨腔105内容装的墨水耗尽时能够通过此注墨口109向储墨腔105中补充墨水。
在盒体102内，还设置有导气腔110。在导气腔110内充填有海绵块111。海绵块111内吸附有液体，较优的是与储墨腔105内所容纳墨水同质的墨水。导气口112开设于盒盖103上，其在重力方向上位于海绵块111上表面的上方。导气口112通过第一导气通道113经由海绵块111的下表面连通导气腔110。第二导气通道107的一端在重力方向上于海绵块111上表面的上方连通导气腔110，而其另一端则在重力方向上于海绵块111上表面的下方连通储墨腔105。海绵块111的下表面在重力方向上的位置介于储墨腔105的底壁和出墨口106之间。
第一导气通道113的中段经过横向尺寸扩张后即成为第一气室114，第二导气通道107的中段经过横向尺寸扩张后即成为第二气室108。第一导气通道113和第二导气通道107扩张横向尺寸后，便于在墨盒100内部出现较大的压力波动时向其提供更强的缓冲能力，防止墨水倒溢至导气口112。
作为本发明喷墨打印机墨盒专利技术的进一步改进方案，前述第二导气通道107连通储墨腔105的端口在重力方向上的位置最好选择为位于海绵块111下表面的下方，并且第一导气通道113连通导气腔110的端口与第二导气通道107连通储墨腔105的端口，两者沿重力方向同时位于海绵块111下表面附近的同一水平面上。
 工业实用性
本发明的喷墨打印机墨盒，在导气口和储墨腔之间采用增设带有多孔泡沫块的导气腔，并在多孔泡沫块即海绵块内充注液体，同时把第一导气通道连通导气腔的端口与第二导气通道连通储墨腔的端口均设置在墨盒底部位置，即海绵块下表面以下的方式，这样就能够保证在墨盒出墨口和导气口之间有一个不小于同海绵块沿重力方向的高度对应的负压值，并且由于海绵对墨水具有的吸附作用，又提供一个额外的吸附力的束缚，进而一方面保证了无打印输出需求时，墨盒内的墨水不会从出墨口内泄漏至外部；另一方面，又保证了有打印输出需求时，对打印头喷嘴的墨水进行流畅供应。该墨盒结构简单、成本低廉，具有保持墨水具有适度负压和工作状态稳定可靠的优点。

Claims (6)

  1. 喷墨打印机墨盒，包括盒体及盒盖，所述盒体内设置有用于贮存墨水的储墨腔，所述盒盖封接于所述盒体的一侧并成为所述储墨腔的一个侧壁，在所述盒体上于所述储墨腔背对于所述盒盖的一侧开设有出墨口；
    其特征在于：
    所述盒体内还设置有导气腔，所述导气腔内充填有多孔泡沫块，所述多孔泡沫块内吸附有液体，外界大气从导气口通过第一导气通道经由所述多孔泡沫块下表面连通所述导气腔，第二导气通道的一端在重力方向上于所述多孔泡沫块上表面的上方连通所述导气腔而其另一端在重力方向上于所述多孔泡沫块上表面的下方连通所述储墨腔。
  2. 如权利要求1所述喷墨打印机墨盒，其特征在于：
    所述第一导气通道的中段扩大容积后成为第一气室，所述第二导气通道的中段扩大容积后成为第二气室。
  3. 如权利要求1或2所述喷墨打印机墨盒，其特征在于：
    所述第一导气通道连通所述导气腔的端口与所述第二导气通道连通所述储墨腔的端口沿重力方向同时位于所述多孔泡沫块下表面附近的同一水平面上。
  4. 如权利要求3所述喷墨打印机墨盒，其特征在于：
    所述多孔泡沫块为海绵块。
  5. 如权利要求4所述喷墨打印机墨盒，其特征在于：
    在所述盒盖上开设有连通所述储墨腔和外部环境的注墨口，所述注墨口由可启闭的塞封闭。
  6. 如权利要求1或2所述的喷墨打印机墨盒，其特征在于：
    所述多孔泡沫块的下表面在重力方向上的位置介于所述储墨腔的底壁和所述出墨口之间。
PCT/CN2011/073236 2010-05-27 2011-04-25 喷墨打印机墨盒 WO2011147240A1 (zh)

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CN106608109A (zh) * 2015-10-24 2017-05-03 周利平 真空自吸式墨盒
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CN109703202A (zh) * 2019-02-27 2019-05-03 珠海市拓佳科技有限公司 一种墨盒及其压力控制方法
CN114248558A (zh) * 2022-01-20 2022-03-29 深圳市微印办公科技有限公司 一种防沉淀的打印机墨盒

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