Toner for electrostatic image development and image forming method using the same

  • US 7,449,274 B2
  • Filed: 11/01/2005
  • Issued: 11/11/2008
  • Est. Priority Date: 11/01/2004
  • Status: Active Grant
First Claim
Patent Images

1. A toner for electrostatic image development, comprising toner particles in which not more than 13 percent by number of the toner particles have a particle diameter of smaller than 4 μ

  • m, not less than 20 percent by number of the toner particles have a particle diameter of 4 μ

    m to 6 μ

    m, not more than 2.0 percent by volume of the toner particles have a particle diameter of 16 μ

    m or greater, wherein the toner particles have a volume average diameter of 4 μ

    m to 9 μ

    m and at least an external additive is added to the toner particles.

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