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Ink composition and ink jet recording method

  • US 7,041,162 B2
  • Filed: 08/07/2003
  • Issued: 05/09/2006
  • Est. Priority Date: 08/15/2002
  • Status: Expired due to Fees
First Claim
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1. An aqueous ink composition comprising:

  • a color microparticle dispersion comprising an oil-soluble dye;

    a hydrophilic organic solvent; and

    a fluorine t surfactant represented by Formula (1) or Formula (2);


    R—

    (CF2)m

    (CH2)n

    Y1-L1-Z 



    Formula (1)wherein R represents a hydrogen atom or a fluorine atom;

    m denotes a number of 3 to 8;

    n denotes a number of 0 to 6;

    Y1 represents a connecting group selected from the group consisting of —

    O—

    , —

    S—

    , —

    SO2— and



    SO—

    ;

    L1 represents a constitutional divalent group having 2 or more carbon atoms; and

    Z represents an anionic group or its salt, or embedded imagewherein R represents a hydrogen atom or a fluorine atom;

    m denotes a number of 3 to 8;

    n denotes a number of 0 to 6;

    Y2 represents a connecting group selected from the group consisting of —

    O—

    , —

    S—

    , —

    SO2— and



    SO—

    ;

    L2 represents a constitutional divalent group having 2 or more carbon atoms; and

    Z represents an anionic group or its salt.

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