公开(公告)号：WO2021125687A1

公开(公告)日：2021-06-24

申请号：PCT/KR2020/017987

申请日：2020-12-09

Applicant: 한국기계연구원

Inventor： 허신 ,  이덕규 ,  이보연

IPC: B41J2/045 ,  B41J2/07 ,  B41J29/393 ,  B41J2/14 ,  B41J2/04588 ,  B41J2/14056

Abstract: 액적 토출 장치 및 이를 이용한 액적 토출 방법에서, 상기 액적 토출장치는 용액 공급유닛, 노즐 및 정재파 발생유닛을 포함한다. 상기 용액 공급유닛은 용액에 가압력을 제공한다. 상기 노즐은 연결관을 매개로 상기 용액 공급유닛에 연결되며 상기 용액을 액적 형태로 토출시킨다. 상기 정재파 발생유닛은 상기 액적이 형성되는 상기 노즐의 주변 영역에 정재파를 형성하여, 상기 액적을 상기 노즐로부터 분리시킨다.

公开(公告)号：WO2022172210A2

公开(公告)日：2022-08-18

申请号：PCT/IB2022/051232

申请日：2022-02-11

Applicant: XTPL S.A.

Inventor： ŁYSIEŃ, Mateusz ,  SCHNEIDER, Ludovic ,  TARAPATA, Grzegorz ,  GRANEK, Filip

IPC: B41J2/045 ,  C09D11/322 ,  C09D11/36 ,  C09D11/52 ,  B41J2/04508 ,  B41J2/04516 ,  B41J2/04581 ,  B41J2/04588 ,  B41J2/04596 ,  B41J2/04598 ,  B41J2202/04 ,  C09D11/326

Abstract: A method of forming a feature by dispensing a metallic nanoparticle composition from an ink-jet print head is disclosed. A jetting waveform is applied to piezoelectric actuator to dispense droplets of the metallic nanoparticle composition through nozzle opening. The droplets range in volume between 0.5 picoliter and 2.0 picoliter. The jetting waveform includes an intermediate contraction waveform portion, a final contraction waveform portion after the intermediate contraction waveform portion, and an expansion waveform portion after the final contraction waveform portion. During the intermediate contraction waveform portion, an applied voltage increases from an initial low voltage to an intermediate voltage and then is held at the intermediate voltage. During the final contraction waveform portion, the applied voltage increases from the intermediate voltage to maximum voltage and then is held at the maximum voltage. During the expansion waveform portion, the applied voltage decreases from the maximum voltage to a final low voltage.

公开(公告)号：WO2021197756A1

公开(公告)日：2021-10-07

申请号：PCT/EP2021/055548

申请日：2021-03-05

Applicant: AGFA NV

Inventor： DE MEUTTER, Stefaan ,  TILEMANS, David ,  LENAERTS, Jens

IPC: B41J2/045 ,  B41M1/26 ,  B41M5/50 ,  B44C1/00 ,  B44C5/04 ,  C09D11/00 ,  B41M5/52 ,  B41M7/00 ,  C09D11/40 ,  C09D11/322 ,  B41J2/04516 ,  B41J2/04581 ,  B41J2/04588 ,  B41J2/04595 ,  B41J2/04596 ,  B41J2202/03 ,  B41J2202/12 ,  B41M5/5218 ,  B41M5/5245 ,  B41M5/5254 ,  B41M7/0027

Abstract: A grayscale inkjet printing method including the steps of: a) supplying a pigmented inkjet ink to a grayscale print head having nozzles with an outer nozzle surface area smaller than 500 μm2 and having an acoustic resonance period ARP of not more than 5.5 μs; and b) applying a voltage wave form for ejecting pigmented inkjet ink from a nozzle of the grayscale print head within one jetting cycle; wherein the pigmented inkjet ink has a viscosity of at least 3.8 mPa.s at jetting temperature and a shear rate of 1,000 s-1; wherein the voltage wave form for ejecting the largest ink droplet includes, in chronological order, a first ejecting pulse having an amplitude A1 and a second ejecting pulse having an amplitude A3 with the amplitude A1 complying with the relationship: 0.50 x A3