Resin particle and method for producing the same

摘要

A resin particle including: a resin mother particle; and silica particles externally added onto a surface of the resin mother particle, wherein primary particles of the silica particles, the primary particles which have a volume average particle diameter of from 80 nm to 300 nm, a particle size distribution index of from 1.10 to 1.40, an average circularity of from 0.70 to 0.92 and an average circularity distribution index of from 1.05 to 1.50, and a proportion of the primary particles having an average circularity of 0.95 or more is not more 10% by number.

主权项

1. A resin particle, comprising:
a resin mother particle; and a silica particles externally added onto a surface of the resin mother particle,
whereinprimary particles of the silica particles have a volume average particle diameter of from 80 nm to 300 nm, a particle size distribution index of from 1.10 to 1.40, an average circularity of from 0.70 to 0.92 and an average circularity distribution index of from 1.05 to 1.50, anda proportion of the primary particles having an average circularity of 0.95 or more is not more 10% by number,
whereinthe particle size distribution index (GSDv) is (D84v/D16v)0.5, where D84v is a particle diameter at an accumulation of 84% and D16v is a particle diameter at an accumulation of 16%, andthe average circularity distribution index is a square root of a value obtained by dividing 84% circularity by 16% circularity in cumulative frequency.