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. 发明专利
    • A head unit, a liquid ejecting apparatus, and a method of driving the head unit
    • JP5359632B2
    • 2013-12-04
    • JP2009167129
    • 2009-07-15
    • セイコーエプソン株式会社
    • 欣也 小澤俊華 張
    • B41J2/055B41J2/045
    • PROBLEM TO BE SOLVED: To make a liquid droplet minute when ejecting a high-viscosity liquid and to prevent separation of dots by suppressing occurrence of mist or the like. SOLUTION: The head unit includes a nozzle for ejecting the liquid, a pressure generating chamber for applying pressure change to the liquid, a liquid supply part for supplying the liquid, an element for applying the pressure change to the liquid, and an ejection pulse generating part for allowing the element to operate. The ejection pulse has such pulse waveform that includes a first expansion element for drawing in a meniscus to the pressure generating chamber side, a contraction element for pushing out the meniscus to an ejection side by contracting the pressure generating chamber, and a second expansion element for drawing in the meniscus to the pressure generating chamber side again by expanding the pressure generating chamber. The first and second pressure generating chamber expansion elements have a plurality of different potential change rates, and area of an aperture on the ejection side of the nozzle is set to be equal to or less than 1/10 of area of the aperture on the pressure generating chamber side, that is, an aperture of the liquid supply part. COPYRIGHT: (C)2011,JPO&INPIT