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Invention Grant
CN1912755B 调色剂 有权 复审申请

调色剂
Abstract:
本发明的调色剂至少含有粘合树脂、着色剂。该粘合树脂至少含有聚酯单元及乙烯类共聚单元。其特征为，该调色剂经特定方法提取的特定四氢呋喃(THF)可溶性成分A利用凝胶渗透色谱法(GPC)测定的分子量分布中，在分子量2000～7000的范围内有主峰MpA。特定的THF可溶性成分B利用GPC法测定得到的分子量分布中，在分子量5000～10000的范围内有主峰MpB，分子量在100000或100000以下的比例为70～100质量％，THF可溶性成分A的峰分子量MpA及THF可溶性成分B的峰分子量MpB的关系满足特定式。
Abstract(English):

A toner of the invention includes at least: a binder resin; and a colorant, in which: the binder resin contains at least a polyester unit and a vinyl copolymer unit; a main peak MpA is present in the molecular weight region of 2,000 to 7,000 in a molecular weight distribution measured by means of gel permeation chromatography (GPC) of a specific tetrahydrofuran (THF) soluble matter A measured by a specific method; a main peak MpB is present in the molecular weight region of 5,000 to 10,000 in a molecular weight distribution measured by means of GPC of a specific THF soluble matter B which contains a component of a molecular weight region of 100,000 or less in range from 70 to 100 mass%, and the peak molecular weight MpA of the THF soluble matter A and the peak molecular weight MpB of the THF soluble matter B satisfy a specific equation.

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