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    • 6. 发明授权
    • Toner composition and method for production thereof
    • 调色剂组合物及其制造方法
    • US06733942B2
    • 2004-05-11
    • US10129525
    • 2002-05-07
    • Yuji EmuraShoji KawasakiMasaaki ShinHiroshi Matsuoka
    • Yuji EmuraShoji KawasakiMasaaki ShinHiroshi Matsuoka
    • G03G9087
    • G03G9/08793C08L67/00G03G9/08755G03G9/08764G03G9/08768C08L67/02
    • The present invention relates to a toner composition for electrophotography, used for development of electrostatic image in electrophotography, electrostatic printing, etc., as well as to a process for producing such a toner composition. The toner composition of the present invention comprises a binder resin component [component (A)] and a coloring agent component [component (B)], wherein the binder resin component [component (A)] comprises a particular crosslinked aromatic polyester resin component [component (a-1)] and a particular linear aromatic polyester resin component [component (a-2)] and the proportions of the component (a-1) and the component (a-2) are 5 to 80% by weight [the component (a-1)] and 20 to 95% by weight [the component (a-2)] based on the total weight of the two components. The present invention can provide a toner composition for electrophotography, which is superior in grindability, wax dispersibility and mechanical durability, superior in blocking resistance and offset resistance, and superior in balance between fixing properties after development and development durability.
    • 本发明涉及用于电子照相,静电印刷等中的静电图像显影的电子照相用调色剂组合物,以及这种调色剂组合物的制备方法。本发明的调色剂组合物包含粘合剂树脂 组分[组分(A)]和着色剂组分[组分(B)],其中粘合剂树脂组分[组分(A)]包含特定的交联芳族聚酯树脂组分[组分(a-1)]] 芳香族聚酯树脂组分[组分(a-2)]和组分(a-1)和组分(a-2)的比例为5-80重量%[组分(a-1)]和20至 95重量%[组分(a-2)]。本发明可提供一种电子照相用调色剂组合物,其研磨性,蜡分散性和机械耐久性优异,抗粘连性优异 和 抗剥离性,显影稳定性和显影耐久性之间的平衡性优异。
    • 8. 发明授权
    • Electrostatic image developing toner
    • 静电图像显影墨粉
    • US06284423B1
    • 2001-09-04
    • US09460416
    • 1999-12-14
    • Hiroshi MaekawaKazuo HisamatsuYuji EmuraKoichi OgawaKatsuhiko Mizushima
    • Hiroshi MaekawaKazuo HisamatsuYuji EmuraKoichi OgawaKatsuhiko Mizushima
    • G03G9087
    • G03G9/08764C08G18/0895C08G18/4202C08G18/4255G03G9/08755
    • Urethane modified polyester resin which has a total acid value not greater than 10 KOH mg/g and has been obtained by kneading, in a molten state, a base polyester resin (A) having an acid value of 5 to 20 KOH mg/g and a hydroxyl value of 40 to 70 KOH mg/g, a low-molecular-weight polyester resin (B) having an acid value not greater than 5 KOH mg/g, a hydroxyl value not greater than 10 KOH mg/g and a weight-average molecular weight of 3,000 to 5,000 and a polyisocyanate compound, by using the components (A) and (B) at a weight ratio of 3 to 5:7 to 5 and the polyisocyanate compound in an amount of 0.2 to 1.2 equivalent, in terms of an isocyanate group per equivalent, of the total hydroxyl groups of all the resins. This novel urethane-modified polyester resin (C) is used as a binder resin for the toner. For the preparation of the toner, the resin is mixed and kneaded with a colorant, magnetic powders, charge control agent and the like under a molten state, followed by cooling and pulverization.
    • 聚氨酯改性聚酯树脂,其总酸值不大于10KOHmg / g,并且通过在熔融状态下捏合酸值为5至20KOHmg / g的基础聚酯树脂(A)和 羟值为40〜70KOHmg / g,酸值不大于5KOHmg / g的低分子量聚酯树脂(B),羟值不大于10KOHmg / g,重量 - 平均分子量为3,000〜5,000的多异氰酸酯化合物和多异氰酸酯化合物,以组分(A)和(B)的重量比为3至5:7至5,多异氰酸酯化合物的量为0.2至1.2当量, 每个当量异氰酸酯基团的数量,全部树脂的总羟基数。 该新型氨基甲酸酯改性聚酯树脂(C)用作调色剂的粘合剂树脂。 为了调色剂的制备,在熔融状态下将树脂与着色剂,磁粉,电荷控制剂等混合并进行混合,然后进行冷却和粉碎。