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Toner

  • US 7,629,100 B2
  • Filed: 08/20/2007
  • Issued: 12/08/2009
  • Est. Priority Date: 05/25/2006
  • Status: Active Grant
First Claim
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1. A toner comprising toner particles each containing at least a binder resin and a colorant,wherein, in a case where a tetrahydrofuran (THF) insoluble matter of the binder resin in the toner when the toner is subjected to Soxhlet extraction with THF for 2 hours is represented by A (mass %), a THF insoluble matter of the binder resin in the toner when the toner is subjected to Soxhlet extraction with THF for 4 hours is represented by B (mass %), a THF insoluble matter of the binder resin in the toner when the toner is subjected to Soxhlet extraction with THF for 8 hours is represented by C (mass %), and a THF insoluble matter of the binder resin in the toner when the toner is subjected to Soxhlet extraction with THF for 16 hours is represented by D (mass %), A, B, C, and D satisfy the following expression (1):


  • (A−

    B
    )/2>

    (B−

    C
    )/4>

    (C−

    D
    )/8 



    (1)where 40<

    A≦

    75 (mass %) and 1.0<

    D<

    40 (mass %).

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