ELECTROSTATIC LATENT IMAGE DEVELOPING TONER

摘要

An electrostatic latent image developing toner includes toner particles each including a core and a shell layer disposed over a surface of the core. The shell layer contains first resin particles having a number average particle diameter of 60 nm to 100 nm and second resin particles having a number average particle diameter of 10 nm to 50 nm. A particle diameter difference obtained by subtracting the number average particle diameter of the second resin particles from the number average particle diameter of the first resin particles is +20 nm to +50 nm. The first resin particles contain a charge control agent. The first resin particles have a higher softening point than the second resin particles. A ratio of a mass of the first resin particles to a sum of the mass of the first resin particles and a mass of the second resin particles is 0.7 to 0.9.

主权项

1. An electrostatic latent image developing toner comprising a plurality of toner particles each including a core and a shell layer disposed over a surface of the core, wherein
the shell layer contains first resin particles having a number average particle diameter of at least 60 nm and no greater than 100 nm, and second resin particles having a number average particle diameter of at least 10 nm and no greater than 50 nm, a particle diameter difference obtained by subtracting the number average particle diameter of the second resin particles from the number average particle diameter of the first resin particles is at least +20 nm and no greater than +50 nm, the first resin particles contain a charge control agent, the first resin particles have a higher softening point than a softening point of the second resin particles, and a ratio of a mass of the first resin particles to a sum of the mass of the first resin particles and a mass of the second resin particles is at least 0.7 and no greater than 0.9.