| 摘要 |
PURPOSE:To offer an electrostatic charge image developer which makes electrostatic charge quantity to stabilize, does not bring lowering image density and is excellent in transportating property by controlling triboelectric chargeability of a composite particulate. CONSTITUTION:In the electrostatic charge image developer containing a coloring particle, containing at least a resin and a coloring agent, and the composite particulate which is made by sticking an inorganic particulate on a surface of a resin particulate, triboelectric charge quantity of the composite particulate H(Q/M) and triboelectric charge quantity of the coloring particle T(Q/M) are satisfied with the relation expressed by the formula I and II. The formula I; [T(Q/M)]X[H(Q/M)]<=0, the formula II; 20>=¦H(Q/M)¦ where unit of T(Q/M) and H(Q/M) muC/g. |
