Toner for electrostatic latent image development
AssigneeKYOCERA Document Solutions Inc.
InventorsHiroaki Moriyama, Yukinori Nakayama, Takeo Mizobe, Takanori Tanaka, Hiroki Uemura
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Abstract
A toner for electrostatic latent image development is comprised toner particles containing toner core particle containing at least a binder resin and a shell layer coating the toner core particle. The shell layer is smoothened to a predetermined level. The average particle diameter of the resin fine particles is from 45 nm to 300 nm. And, when cross-sections of the toner particles are observed using a transmission electron microscope, cracks approximately perpendicular to surfaces of the toner core particles are observable inside the shell layer.
Claims5
A toner for electrostatic latent image development including a plurality of toner particles, each of the plurality of toner particles comprising a toner core particle containing at least a binder resin and a shell layer coating the toner core particle, wherein:
- the shell layer comprises spherical resin fine particles adhere to an entire surface of the toner core particle such that the spherical resin fine particles do not overlap in a direction perpendicular to the surface of the toner core particle,
- an average particle diameter of the resin fine particles is from 45 nm to 300 nm, and
- the shell layer further comprises cracks on a surface which is contacting toner core particle, the cracks are approximately perpendicular to surface of the toner core particle and originate at phase boundaries of the resin fine particles themselves.
Dependencies are inferred from the claim text.