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    • 13. 发明授权
    • Electrophotographic toner and image-forming method
    • 电子照相调色剂和成像方法
    • US06203956B1
    • 2001-03-20
    • US09519462
    • 2000-03-06
    • Chisato UranoKatsumi DaimonMasato MikamiNorihito Fukushima
    • Chisato UranoKatsumi DaimonMasato MikamiNorihito Fukushima
    • G03G9087
    • G03G9/0821
    • An electrophotographic toner containing a binder resin and a colorant, wherein at the angular frequency of 1 rad/sec and 30° C., a storage elastic modulus (G′30) is at least 1×105 Pa and a loss elastic modulus (G″30) is at least 1×105 Pa; a melting point is in the temperature region of 45 and 110° C.; when a common logarithm of G′ is plotted against the temperature and G′ at melting point +20° C. is represented by G′ (Tm+20) and G′ at melting point +50° C. is represented by G′ (Tm+50) the condition of the following formula (1) is satisfied |logG′(Tm+20)−logG′(Tm+50)|≦1.5  (1); and when a common logarithm of G″ is plotted against the temperature and G″ at melting point +20° C. is represented by G″ (Tm+20) and G″ at melting point +50° C. is represented by G″ (Tm+50), the condition of the following formula (2) is satisfied |logG″(Tm+20)−logG″(Tm+50)|≦1.5  (2). The electrophotographic toner is good in a low-temperature fixing property and an offset resistance, has a wide fixing latitude and is capable of oilless fixing.
    • 一种含有粘合剂树脂和着色剂的电子照相调色剂,其中在角度频率为1弧度/秒和30℃时,储能弹性模量(G'30)为至少1×10 5 Pa,损耗弹性模量(G“ 30)至少为1×10 5 Pa; 熔点在45℃和110℃的温度范围内。 当相对于温度绘制G'的常用对数时,在熔点+ 20℃下的G'由G'(Tm + 20)表示,而熔点+ 50℃的G'表示为G'( Tm + 50)满足以下公式(1)的条件,并且当相对于温度绘制G“的常用对数并且在熔点+ 20℃下的G”被表示为G“(Tm + 20)时 )和熔点+ 50℃下的G“由G”(Tm + 50)表示,满足下式(2)的条件电子照相调色剂在低温定影性和偏移 电阻,具有宽的固定宽度,能够无油固定。
    • 14. 发明授权
    • Charged member for electrostatic development and sleeve for
electrostatic development
    • 用于静电开发的带电元件和用于静电开发的套筒
    • US5932387A
    • 1999-08-03
    • US907002
    • 1997-08-06
    • Yasuo YamamotoTakeshi AgataMasato MikamiKazuhiko YanagidaSuk Kim
    • Yasuo YamamotoTakeshi AgataMasato MikamiKazuhiko YanagidaSuk Kim
    • G03G9/113
    • G03G9/1131G03G9/1133Y10T428/2998
    • The present invention provides a charged member which has no reduction in the amount of electrostatic charge at high temperature and high humidity and no extreme increase in the amount of electrostatic charge at low temperature and low humidity, improves the adhesion force between a charged member and a coating layer, prevents deterioration of developer through peeling of the coating layer. It provides excellent durability without deterioration of toner through adhering of a toner to the carrier. More particularly, a carrier for electrophotography and a sleeve for electrostatic development which use as a coating material a high-molecular compound containing as an essential component the first monomer represented by the following general formula (1) and/or (2), the second monomer represented by the following general formula (3) and/or (4) and a coupling agent containing a vinyl group are provided.
    • 本发明提供了一种充电部件,其在高温高湿下不会减少静电电荷量,并且在低温和低湿度下不会极大地增加静电电荷,从而提高带电部件与 涂层,通过剥离涂层防止显影剂的劣化。 它通过将调色剂粘附到载体上而提供优异的耐久性而不会使调色剂劣化。 更具体地说,一种用于电子照相的载体和用于静电显影的套筒,其用作涂覆材料,含有由以下通式(1)和/或(2)表示的第一单体作为主要成分的高分子化合物,第二种 提供由以下通式(3)和/或(4)表示的单体和含有乙烯基的偶联剂。