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TONER FOR ELECTROSTATIC CHARGE IMAGE DEVELOPMENT

  • US 20190310565A1
  • Filed: 02/26/2019
  • Published: 10/10/2019
  • Est. Priority Date: 04/09/2018
  • Status: Abandoned Application
First Claim
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1. A toner for electrostatic charge image development comprising:

  • a toner base particle containing a binder resin; and

    an external additive containing a strontium titanate fine particle, whereinthe binder resin contains an amorphous resin and a crystalline polyester resin, in which the crystalline polyester resin is a polycondensate of an aliphatic dicarboxylic acid having from 6 to 14 carbon atoms and an aliphatic diol having from 6 to 14 carbon atoms, andthe strontium titanate fine particle contains a strontium titanate fine particle (A) and a strontium titanate fine particle (B), in which a particle diameter RA of a peak top in number particle size distribution of the strontium titanate fine particle (A) is smaller than a particle diameter RB of a peak top in number particle size distribution of the strontium titanate fine particle (B).

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