| 摘要 |
PURPOSE:To prevent attachment of carrier and to improve image quality by adding 0.05 - 5.0 pts.wt. of BaO and/or CaO to 100 pts.wt. of the specified ferrite. CONSTITUTION:The hundred pts.wt. of the carrier component represented by the formula (MO)100-x(Fe2O3)x, M being a combination of divalent metal elements composed essentially of Cu and Zn, and x being 55 - 95 mol %, contain 0.05 - 5.0 pts.wt. of BaO and/or CaO, thus permitting attachment of the carrier in a developing zone to be prevented, and image density and resolution to be enhanced due to high electric resistance and high triboelectrifiability. |
