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    • 8. 发明授权
    • Electrophotographic toner and method of preparing the same
    • 电子照相调色剂及其制备方法
    • US08501378B2
    • 2013-08-06
    • US12625637
    • 2009-11-25
    • Jeong-hyun LeeYong-kyun JungKyeong Pang
    • Jeong-hyun LeeYong-kyun JungKyeong Pang
    • G03G9/08
    • G03G9/0804G03G9/0806G03G9/08782G03G9/08795G03G9/08797G03G9/0902G03G9/09708
    • An electrophotographic toner includes a latex, a colorant, and a release agent, wherein G′(80) is in a range of about 2.0×105 Pa to about 3.0×106 Pa and G′(80)/G′(140) is in a range of about 2.0×102 to about 3.0×103, wherein in regard to a molecular weight distribution on a gel permeation chromatography (GPC) chromatogram, the molecular weight region of 1.0×104 g/mol or less of a tetrahydrofuran (THF)-soluble component of the electrophotographic toner is about 5% or less, and the molecular weight region of 1.0×105 g/mol or more of the THF-soluble component of the electrophotographic toner is in a range of about 5% to about 20%, where G′(80) and G′(140) respectively denote storage moduli of the electrophotographic toner at temperatures of 80° C. and 140° C. when a dynamic viscoelasticity according to a sine-wave vibration is measured at an angular velocity of 6.28 rad/sec and at a temperature increase rate of 2.0° C./min.
    • 电子照相调色剂包括胶乳,着色剂和脱模剂,其中G'(80)在约2.0×10 5 Pa至约3.0×10 6 Pa的范围内,并且G'(80)/ G'(140)为 在约2.0×10 2至约3.0×10 3的范围内,其中,关于凝胶渗透色谱(GPC)色谱图上的分子量分布,分子量范围为1.0×10 4 g / mol以下的四氢呋喃(THF )的电子照相调色剂的可溶成分为约5%以下,电子照相调色剂的THF可溶成分的分子量为1.0×10 5 g / mol以上的分子量范围为约5〜20 %,其中G'(80)和G'(140)分别表示在80℃和140℃的温度下电子照相调色剂的存储模量。当根据正弦波振动的动态粘弹性以角度 速度为6.28rad / sec,升温速度为2.0℃/ min。