A polyester resin for a toner, the polyester resin including:
a segment derived from an alcohol component; and
a segment derived from a carboxylic acid component,
wherein the alcohol component includes a trivalent or higher aliphatic alcohol, and
wherein the polyester resin satisfies Expressions (1) to (3) below: 500≤Weight average molecular weightMwValence of the trivalent or higher aliphatic alcohol×Amount of the trivalent or higher aliphatic alcohol≤4,000 4,000 ≤ Weight average molecular weight (Mw) ≤ 25,000 ··· Expression (2); and 4,000 ≤ (Amount of the trivalent or higher aliphatic alcohol) ≤ 6.5 ··· Expression (3),
where, in the Expressions (1) and (3), the Amount of the trivalent or higher aliphatic alcohol denotes a percent by mole of the trivalent or higher aliphatic alcohol relative to the alcohol component.
一种用于墨粉的聚酯
树脂,该聚酯
树脂包括
提取自醇成分的部分;以及
提取自
羧酸组分的部分、
其中醇组分包括三价或更高级的
脂肪醇,以及
其中聚酯
树脂满足以下表达式 (1) 至 (3):500≤ 重量平均分子量 Mw三价或更高脂族醇的含量×三价或更高脂族醇的数量≤4,000 4,000 ≤ 重量平均分子量 (Mw) ≤ 25,000 --- 表达式 (2);以及 4,000 ≤ (三价或更高脂族醇的数量)≤ 6.5 --- 表达式 (3)、
其中,在表达式(1)和(3)中,三价或更高级
脂肪醇的量表示三价或更高级
脂肪醇相对于醇组分的摩尔百分比。