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发明授权
CN104749911B 调色剂 有权

调色剂
摘要：
本发明提供具有良好的定影性、脱模性和较少的对图像的不利影响的调色剂。本发明提供的调色剂包括各自包含粘结剂树脂、着色剂和酯蜡的调色剂颗粒，和二氧化硅细颗粒，其中：所述酯蜡包含多种由R1‑COO‑(CH2)x1‑OOC‑R2或R3‑OOC‑(CH2)x2‑COO‑R4表示的酯类；(i)当在多种酯之中含量最大的酯规定为“酯A”时，所述酯蜡中，酯A的含量为40‑80％，且(ii)当酯A具有分子量M1时，所述酯蜡中，具有M1×0.8以上且M1×1.2以下的分子量的酯的含量为90％以上；所述调色剂颗粒的表面上所述二氧化硅细颗粒的覆盖率X1为40.0‑75.0％；且当理论覆盖率定义为X2时，扩散指数(X1/X2)满足以下：X1/X2≥‑0.0042×X1+0.62。
摘要（英）：

It is intended to provide toner that has favorable fixability, releasability and few negative effects on images. The present invention provides toner including toner particles each containing a binder resin, a colorant and an ester wax, and silica fine particles, wherein: the ester wax contains a plurality of esters represented by R1-COO—(CH2)x1—OOC—R2, or R3-OOC—(CH2)x2—COO—R4; (i) when an ester whose content is maximum is designated as “ester A”, a content of the ester A in the ester wax is 40-80%, and (ii) when the ester A has a molecular weight M1, a content of an ester having a molecular weight of M1×0.8-M1×1.2 in the ester wax is 90% or larger; a coverage ratio X1 of the surface of the toner particles with the silica fine particles is 40.0-75.0%; and when a theoretical coverage ratio is defined as X2, a diffusion index (X1/X2) satisfies the following: X1/X2≧−0.0042×X1+0.62.

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