Cooper & Dunham LLP
Polymer particles, method of producing the same, and toner for use in electrophotography comprising the polymer particles
 Polymer particles which are substantially spherical and have protrusions on the surface thereof, with such a particle size distribution that the volume mean diameter dv thereof is 1.ltoreq.dv.ltoreq.15 (.mu.m), and the ratio of the volume mean diameter dv to the number mean diameter dn thereof, that is, dv/dn, is 1.ltoreq.dv/dn.ltoreq.1.2, are prepared, and used as a component for a toner for use in electrophotography. 
Ricoh Company, Ltd.
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G03G G03G Y10T C08F Y10S G03G Y10S
inventional inventional additional inventional additional inventional additional
Hiroshi Keiko Hiromitsu
Yamashita Shiraishi Kawase