| 摘要 |
A developer for electrostatography containing a positive charge controlling agent comprising fumed silica particles treated with a silane coupling agent or titanate coupling agent and controlled to an appropriate degree of hydrophobicity has a stable and sharp distribution in amount of positive triboelectric charges under a variety of conditions including higher temperature-higher humidity or lower temperature-lower humidity conditions. This developer is useful particularly in an electrophotographic process employing a developer carrying member for charging of the developer. |
