Cooper & Dunham LLP
Polymer particles and toner for electrophotography using 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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C08F G03G Y10S Y10T Y10S G03G G03G
inventional inventional additional additional additional inventional inventional
Keiko Hiroshi Hiromitsu
Shiraishi Yamashita Kawase