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Development of Ink-Particle Flight Simulation for Continuous Inkjet Printer

[+] Author Affiliations
Masato Ikegawa, Eiji Ishii

Hitachi Research Laboratory, Hitachi, Ltd., Hitachinaka, Ibaraki, Japan

Nobuhiro Harada, Tsuneaki Takagishi

Hitachi Industrial Equipment Systems Co., Ltd., Hitachi, Ibaraki, Japan

Paper No. IMECE2013-63094, pp. V07AT08A001; 7 pages
  • ASME 2013 International Mechanical Engineering Congress and Exposition
  • Volume 7A: Fluids Engineering Systems and Technologies
  • San Diego, California, USA, November 15–21, 2013
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-5631-4
  • Copyright © 2013 by ASME


An ink-particle flight simulation method for industrial, continuous-type inkjet printers was developed to clarify the factors that influence the print distortion. Print distortion is produced by aerodynamic and electric interference between the ink-particles flying from the nozzle onto the print-target. The necessary functions to do this, such as the calculation of electrostatic force in the electric field between the electrodes, the Coulomb’s force from other charged ink-particles, and the drag force in the inkjet stream for many flying ink-particles were added to a Lagrangian method in the fluid dynamic analysis software that was used for the simulation. The trajectories of the ink-particles flying from this nozzle onto the print target and the air-flow caused by them were calculated simultaneously in the simulation. The simulation results for the velocities and trajectories of the flying ink-particles were compared with the experimental ones using a high-speed camera. These simulation results were in good agreement with the experimental ones, and this helps to clarify the factors that influence the print distortion.

Copyright © 2013 by ASME



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