| 摘要 |
PURPOSE:To reduce a change in the extent of electrostatic charge of a toner with the lapse of time and to inhibit the scattering of the toner by using a positively chargeable thermoplastic resin having positive chargeability or a positively chargeable thermoplastic resin provided with positive chargeability by adding a charge controller and a white or colorless quat. ammonium salt. CONSTITUTION:This toner contains a positively chargeable thermoplastic resin having positive chargeability or a positively chargeable thermoplastic resin provided with positive chargeability by adding a charge controller and a white or colorless quat. ammonium salt. The thermoplastic resin having positive chargeability may be a thermoplastic resin having amino groups. The charge controller for providing positive chargeability to a thermoplastic resin may be a compound having an amino group. The thermoplastic resins have preferably about 5,000-30,000 number average mol.wt., and the proper dielectric constant is >=3.0 in a dry state. |
