×

TONER

  • US 20190339629A1
  • Filed: 04/08/2019
  • Published: 11/07/2019
  • Est. Priority Date: 05/01/2018
  • Status: Active Grant
First Claim
Patent Images

1. A toner comprising a toner particle including a binder resin and a crystalline polyester resin, whereinthe binder resin is an amorphous polyester resin having a linear alkyl group at a molecular chain terminal,the crystalline polyester resin is a polycondensate of a diol and a dicarboxylic acid,where the number of carbon atoms of the linear alkyl group is denoted by CaPES, the number of carbon atoms of the diol is denoted by COH, and the number of carbon atoms of the dicarboxylic acid, excluding carbon that belongs to carboxyl groups, is denoted by CAc,the CaPES, the COH, and the CAc satisfy the following relationships (1), and (2) or (3), anda glass transition temperature of the toner as measured by a differential scanning calorimeter is from 40.0°

  • C. to 55.0°

    C.
    8≤

    CaPES

    20 



    (1)
    CAc/COH

    3.5 and 0≤

    |CAc

    CaPES|≤

    3 



    (2)
    COH/CAc

    3.5 and 0≤

    |COH

    CaPES|≤

    3. 



    (3)

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×