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Epson Develops a Next-Generation Inkjet Print Head Using an Original Thin-Film Piezo Element That Has the World’s Highest Degree of Distortion Epson用一种超薄压电薄膜开发出新一代喷墨打印头,它具有世界最高的曲变度。 
   – TOKYO, Japan, March 27, 2007 
   –日本东京,2007年3月27日 

   Seiko Epson Corporation (“Epson “) has succeeded in developing a thin-film piezo element that boasts the world’s highest* degree of distortion. Volume production of next-generation Micro Piezo print heads that feature these elements as actuators will be launched in April 2007.
   精工爱普生(Epson)已经成功开发出一种超薄压电薄膜器件,它达到了当今世界最高曲变度,,Epson将用这种新型压电器件作为驱动器,大量生产下一代微压电喷头,并在2007年4月开始上市。 

   The Micro Piezo print head is an inkjet print head which utilizes Epson’s original Micro Piezo technology. This technology uses electrical signals to change the shape of piezo elements and then fires ink droplets according to the physical force generated by the change in shape of these elements. Epson’s Stylus Photo and Stylus Pro inkjet printers, which utilize Micro Piezo print head technology, are photo-quality printers that have consistently played leading roles in the Japanese inkjet printer market and earned high approval and trust from customers.
   微压电喷头是喷墨打印头的一种,它应用了Epson原创的微压电技术,这种技术用电信号使压电元件产生变形,墨滴依靠这种变形所产生的推力喷射出去。应用了微压电打印技术的Epson Stylus Photo和Stylus Pro系列是照片品质的打印机,一直在日本乃至全球的喷墨打印机市场上扮演了领导者角色,并赢得了客户的高度赞誉和信任。 

   Inkjet systems are currently attracting a great deal of attention as they are being put to use more and more frequently in printing and manufacturing processes. Inkjet systems have the advantages of being ideally suited to small print loads and of being gentler on the environment. Compared to other inkjet systems, Micro Piezo technology offers superior ink ejection performance, compatibility with a wide variety of inks, and durability. As a result, this technology is already being utilized effectively in various commercial and industrial fields such as photo lab printing, digital printing, textile printing, and color filter manufacturing. The Micro Piezo print head is not only suitable for functions ranging from consumer applications to commercial and industrial applications, but it also offers outstanding cost effectiveness due to its high degree of reliability and production volume efficiency.
   随着喷墨打印系统越来越多地应用在印刷和工业领域,它也越来越多地吸引了人们的目光。喷墨打印系统具有适合小量打印、环保等优势。相对于其他的喷墨打印技术,微压电技术具有墨水喷射性能好、墨水兼容性强、耐用等优势,因之,这种技术被广泛地应用在各商业和工业领域:影楼照片打印、数码印刷、印染。。。,微压电打印头不光应用范围广,而且具有因其可靠性和适于量产所产生的成本优势。

   Epson is currently focusing its development efforts on creating a next-generation Micro Piezo print head to support expansion of the inkjet field beyond consumer printers and to strengthen its applications for business and industry. Through these efforts, Epson has achieved the following:
   随着消费及商业和工业领域对喷墨打印需求的日益扩大, Epson目前致力于开发新一代微压电喷头,有了这项成果,Epson已经实现了:


  1. Created a piezo element with the world’s highest degree of distortion through film thickness reduction and materials development. 通过减小压电薄膜的厚度,开发出了世界最高的曲变度的压电薄膜元件。

  2. Raised density levels by developing and utilizing innovative thin-film processing techniques. 因为这种创新的薄膜技术,提高了喷嘴的密度。

  3. Designed a high-density ink reservoir through independent MEMS technology development. 通过独立的MEMS技术开发设计出高密度墨水仓


   As a result, Epson has managed to develop a nozzle with a density of 360 dpi—the world’s highest* for an inkjet print head using piezoelectric technology—while at the same time maintaining the advantages of conventional Micro Piezo print heads. Epson has also managed to establish a completely independent manufacturing process by producing the piezoelectric materials in-house. The installation of these next-generation Micro Piezo print heads in printers and other devices will make it possible to design speedier and more compact inkjet equipment than ever before.
   基于这个基础,Epson开发了喷嘴密度为360DPI的喷头—基于压电技术的目前全世界物理精度最高喷头(根据Epson自己的调查),并保留了前代产品的所有优点。为此Epson建立了一个完全独立运行的属于自己生产基地,装有此种新一代喷头的打印机和相关设备将比以往的产品更加紧凑,更利于设计制造。 

   In the future, Epson plans to focus on Micro Piezo technology as one of its core technologies. By continuing to develop Micro Piezo technology, Epson will be able to expand its usage potential beyond consumer applications to encompass other areas such as business and industry.
   今后,Epson计划聚焦于微压电技术,并把它作为自己的核心技术。通过持续不断地开发,Epson将能够拓展微压电技术在消费应用以外的新的领域,例如商业和工业方面。 
*According to Epson’s research

   Special characteristics of Epson’s original Micro Piezo print head
   This print head fulfills all the requirements for an inkjet print head—superior ink ejection performance, compatibility with a wide variety of inks, and durability. The print head also makes it possible to control not only water-based pigment ink with superior water and light resistance, but also a wide variety of ink types in miniscule quantities, and fire them with high precision.
   Epson原创的微压电喷头的特性 
   这种喷头满足喷头所需要的一切性能—优异的喷墨性能、墨水兼容性强、稳定耐用。。。,也使另外一种需求变成可能:不但能够控制低阻抗的水性颜料墨水,而且能让其他种类的墨水完美地喷射,打印出很好的质量。 
   1. Ink ejection performance墨水喷射性能



  • Meniscus control, which limits vibration on the surface of the liquid in the nozzle, makes it possible to achieve improved gradation and faster print speeds in addition to the following advantages: 很好的弯曲面的控制除了提高喷射速度以外,能够实现如下优点:


    1. Perfectly spherical dots 完美球型墨点

    2. High precision impact point control 准确的喷射点控制

    3. Higher drive frequencies 更高的喷射频率

    4. Variable-sized ink droplets (MSDT: multi-sized dot technology) 可变墨滴大小(MSDT:墨滴多种尺寸技术)


   2. Ink compatibility墨水兼容性



  • Epson’s original pigment ink achieves high levels of color reproduction and durability. Epson原厂颜料墨水色彩还原性好,耐牢度高。

  • Industrial applications such as solvent ink, color filters, and UV ink are currently under development. 工业领域的应用如溶剂墨水、UV光固化墨水等正在开发之中。


   3. Durability经久耐用



  • Because it utilizes a permanent print head, the technology is applicable to a wide range of uses ranging from consumer printers to industrial manufacturing equipment. 因为喷头费耗材而是永久部件,因之会在从消费市场到工业领域都会得到很好的应用。


   Features of the next-generation Micro Piezo print head
   新一代微压电喷头的特点: 
   By independently developing a thin-film piezo element which has the world’s highest degree of distortion and using it as an actuator, Epson has succeeded in taking full advantage of the features of conventional Micro Piezo print heads while at the same time doubling nozzle density. A conventional Micro Piezo print head’s nozzle density is 180 dpi (maximum) whereas a next-generation Micro Piezo print head’s is 360 dpi.
   有了独立开发的全世界最高弯曲度的超薄压电薄膜元件作为喷墨仓,Epson的新喷头不但保留了原来喷头的所有优点,并使喷嘴密度提高一倍,原来的喷头物理精度为180DPI,而新一代喷头为360DPI。


  1. 新一代微压电喷头的原理图     
          



    新一代喷头 
    一列中喷嘴按照360DPI排列,间距71微米 
    一个喷头两列喷嘴,720DPI,间距35微米



    目前的喷头 
    一列中喷嘴按照180DPI排列,间距141微米 
    一个喷头两列喷嘴,360DPI,间距71微米

 2. 喷头表面的放大图片(喷嘴分布)
          



 


    3.压电薄膜变形

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