| 摘要 |
<p>PROBLEM TO BE SOLVED: To ensure superior stability of a charged state, superior moisture, light and heat resistances and safety, to keep printing density proper and stable at the time of continuous use and to prevent the stain of a copy by incorporating a specified compd. SOLUTION: The objective electrostatic charge controlling agent is a compd. represented by the formula. The objective toner for developing an electrostatic charge image contains the electrostatic charge controlling agent, a resin and a colorant. The objective electric charge imparting material has the electrostatic charge controlling agent on at least part of the surface of the matrix. In the formula, R is H, n-valent hydrocarbon or an n-valent metal, preferably H, alkyl, alkylene or an n-valent metal, especially preferably H, 1-20C alkyl, 1-5C alkylene or a mono- to tetravalent metal, the n-valent metal is, e.g. Li, Na, K, Mg, Ca, Al, Fe, Co, Ni, Cu, Zn or Ba and (n) is an integer of 1-4.</p> |
