| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a resin particle maintaining fluidity more than a case that the resin particle does not bear silica particles on the surface of the resin particle body, the primary particle of which has the volume-average particle size of 100-500 nm, the particle size distribution index of 1.40-1.80, and the average degree of circularity of 0.5-0.85, and has a regression line concerning the degree of circularity and the volume-average particle size (nm), expressed by formula (1). <P>SOLUTION: The resin particle is composed of a resin particle body and a silica particle attached on the surface of the resin particle body, where the primary particle of the silica particle has the volume-average particle size of 100-500 nm, the particle size distribution index of 1.40-1.80, and the average degree of circularity of 0.5-0.85, and has a regression line concerning the degree of circularity and the volume-average particle size (nm), expressed by formula (1): degree of circularity=α×(volume-average particle size)/1,000+β (wherein -2.5≤α≤-0.9; and 0.8≤β≤1.2). <P>COPYRIGHT: (C)2012,JPO&INPIT |
