发明授权
US08658339B2 Negative charge controlling agent and static charge image developing toner using the same, and method for producing the same 有权
负电荷控制剂和使用其的静电荷图像显影调色剂及其制造方法

Negative charge controlling agent and static charge image developing toner using the same, and method for producing the same
摘要:
A negative charge controlling agent, wherein: the negative charge controlling agent comprises polycondensation product obtained by a polycondensation reaction of phenols and aldehydes; and the phenols comprises a (A) mononucleus phenolic compound which has one phenolic hydroxy group in which a hydrogen is bonded at the ortho position of a hydroxyl group of the phenolic hydroxy group and a (B) multinucleus phenolic compound which has at least two phenolic hydroxy groups in which a hydrogen is bonded at the ortho position of a hydroxyl group of each of the phenolic hydroxy group; and the content of the (B) phenolic compound in the phenols is 1 to 30 mol %.
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