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    • 5. 发明专利
    • AT331003T
    • 2006-07-15
    • AT04009605
    • 2004-04-22
    • FUJI PHOTO FILM CO LTD
    • AOSHIMA KEITAROKAWASHIRI
    • C09D11/00
    • An inkjet recording ink composition and an ink jet recording method is provided, which can ensure that an ink droplet can be always stably ejected in long-term inkjet recording, a high-quality image can be formed for a long period of time and, even when the recorded materials are superposed, the image-recorded materials do not adhere to each other in aging, the ink composition comprising a dispersion medium and a charged particle containing a coloring material, wherein said ink composition satisfies all of the conditions (A) to (D): (A) the electric conductivity at 20 DEG C of the ink composition is from 10 to 300 nS/m, (B) the electric conductivity at 20 DEG C of the charged particle is 50% or more of the electric conductivity of the ink composition, (C) the volume average diameter of the charged particle is from 0.2 to 5.0 mu m, and (D) the viscosity at 20 DEG C of the ink composition is from 0.5 to 5 mPa.s.