| 摘要 |
PURPOSE:To eliminate the fluctuation in the positive electrostatic charge quantity among toner particles by incorporating metal complex of arom. oxyaldehydes as an electric charge control agent into a titled compsn. CONSTITUTION:The metal complex of the arom. oxyaldehydes expressed by the formula is added as the charge control agent to the developer compsn. In the formula, R denotes H, (un)substd.alkyl, halogen. For example, a Mn complex or Co complex of 2-hydroxy-1-naphthoaldehyde, etc., are usable for said complex. This complex is used by being added and dispersed into a binder resin of a one-component or two-component developer or being adhered to the surface of the toner particles in the case of using the complex for said developers. The complex is added to a coating agent or binder of a carrier to control the electrostatic charge of the toner in the case of using the complex for the carrier. |
