Fine metal oxide powder having high dispersibility and toner composition comprising the same
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United States of America Patent
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Jan 13, 2004
Grant Date -
Apr 24, 2003
app pub date -
Sep 5, 2002
filing date -
Dec 8, 1999
priority date (Note) -
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status (Latency Note)
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Abstract
Regarding the metal oxide fine powder, which is used as the additive of a powder material and is hydrophobic treated on the surface, the peak of the particle size distribution of the agglomerated particle is made to be less than the same level of average size of the powder material, so that said powder has high dispersibility in the powder material. When this metal oxide fine powder is used as the external additive, such as the toner for the electronic photograph, the standup of the electrostatic charge, the image quality, and the cleaning characteristic are improved remarkably.
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