申请人:Hodogaya Chemical Co., Ltd.
公开号:EP2618220A1
公开(公告)日:2013-07-24
To provide a charge controlling agent for electrophotography, which presents sufficient triboelectric chargeability to a toner, is useful particularly for a color toner and further for a polymerized toner, increases a charge rising rate, has a high electric charge amount, is excellent in charging characteristics, stability over time and environmental stability and yet is safe without posing any problem regarding waste regulations, and a negatively chargeable toner for developing an electrostatic image, which uses such a charge controlling agent and which has a high charging performance. A charge controlling agent comprising, as an effective component, at least one type of cyclic phenol sulfide represented by the following formula (1), and a toner comprising such a charge controlling agent:
提供一种用于电子照相的电荷控制剂,该电荷控制剂对墨粉具有足够的三电荷性,特别适用于彩色墨粉,还适用于聚合墨粉,能提高电荷上升率,具有高电荷量,在充电特性、长期稳定性和环境稳定性方面都很出色,而且安全,不会造成任何废物方面的问题;还提供一种用于显影静电图像的负电荷墨粉,该墨粉使用了这种电荷控制剂,具有很高的充电性能。一种电荷控制剂,其有效成分包括至少一种由下式(1)表示的环状苯酚硫化物,以及一种包含这种电荷控制剂的墨粉: