| 摘要 |
By simultaneously atomizing a siloxane and two organometallic compounds of different metals M1 and M2 exclusive of silicon in a flame for combustion, spherical amorphous ternary complex oxide fine particles are obtained which are substantially free of chlorine, have a particle size of 10-500 nm, and have a silica content A of 1-99 wt %, a M1 oxide content B of 1-90 wt % and a M2 oxide content C of 1-90 wt %, all based on the weight of oxides excluding carbon, provided that A+B+C≈100. An electrostatic image developer comprising the fine particles is improved in fluidity and cleanability and bears a uniform and stable quantity of electric charge.
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