| 摘要 |
PROBLEM TO BE SOLVED: To obtain a positive charge type toner having a large amount of charge and small temperature and humidity dependence in development, free of deterioration in its properties due to thermal stress in storage, having good dispersibility of a charge control agent in a binder resin and excellent developing performance, free of in-machine scattering, and having excellent persistence. SOLUTION: The electrostatic charge image developing toner contains at least a binder resin, a colorant and a charge control agent. A composition prepared by mixing a nigrosine base with xylene resin is contained as the charge control agent. COPYRIGHT: (C)2005,JPO&NCIPI |
