| 摘要 |
PROBLEM TO BE SOLVED: To provide a silica fine particle as an external additive for preventing burial in electrophotographic toner resin. SOLUTION: This external additive of the electrophotographic toner is a fine particle having a core shell structure having silica compound in a shell layer, and the specific gravity is 1.8 or lower. COPYRIGHT: (C)2011,JPO&INPIT |
