| abstract |
(57) [Summary] [Structure] In an electrophotographic toner containing at least a binder resin and a colorant, the main component of the binder resin is a linear polyester, and the pulverizability index of the binder resin is Is from 14 to 40, an electrophotographic toner, And a developer composition in which the toner is supported on a magnetic carrier. [Effect] When the electrophotographic toner or developer composition of the present invention is used, it is possible to maintain high image quality even after long-term use due to its excellent impact resistance, and it is possible to use these in any environment of low temperature low humidity and high temperature high humidity. Has a very small effect, is highly transparent, and can form a smooth fixing surface. Low temperature fixing is possible. |