会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 1. 发明公开
    • VERFAHREN ZUR ANSTEUERUNG EINES TINTENDRUCKKOPFS
    • EP3322589A2
    • 2018-05-23
    • EP16758262.6
    • 2016-07-11
    • Franck, Jan
    • Franck, Jan
    • B41J2/045B41J2/21
    • The invention relates to a method for actuating an ink-jet print head, comprising at least one printing system that has a nozzle positioned on the side of an ink chamber that faces a substrate to be printed, said ink chamber being delimited at least in some sections, and preferably in the region thereof that faces away from the printing substrate, by a membrane which can be moved away from the ink chamber by electrically actuating a piezo-element that is mechanically coupled to said membrane, such that ink is sucked into the ink chamber from a storage chamber, and which membrane can be moved into the ink chamber such that an ink drop is pushed out through the nozzle, wherein the printing system, which consists of the ink chamber, membrane, piezo element and the electronic actuation element thereof, constitutes a vibrating structure that, upon a high-energy actuation, is excited to vibrate with a natural frequency fres exhibiting a resonance, i.e. the vibration with the cycle T
      res = 1 /
      fres is not or is only slightly attenuated, wherein the brightness of an image point being printed is varied by a sequence of a plurality of ink drops being pushed out of the same nozzle one after the other, for each image point, with a temporal spacing of T
      tropf = 1 /
      ftropf , and energy is only introduced into the printing system by said actuation signal precisely when an ink drop should also actually be pushed out.