顔料インク表面の凝集がインクジェット特性に与える影響(流体工学,流体機械)

概要

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When pigmented ink is used in an inkjet printer, the first drop sometimes fails to fly after a short intermission. In the precedent paper, it was shown that the misfire phenomenon is concerned with the dispersed particle condensation and cohesion at the ink surface where the dispersion liquid evaporates. In this paper, perturbation method is used to analyze the dynamics of the air-liquid interface on the condition that the liquid is pressurized to move outward. Calculated results show the unexpected characteristics that the most influential parameter is not the viscosity but. the surface tension of ink. To exblain the misfire phenomenon by using these results, the hypothesis is presented that the lateral capillary force is generated by the particles piled up on the ink surface. This force is considered to work as reinforced surface tension, and causes the interference like the misfire in inkjet motion.
社団法人日本機械学会の論文
2004-07-25