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    • 5. 发明申请
    • Positively-charged electrophotographic organic photoreceptor
    • 带正电荷的电子照相有机感光体
    • US20040137346A1
    • 2004-07-15
    • US10716452
    • 2003-11-20
    • SAMSUNG Electronics Co., Ltd.
    • Nam-Jeong LeeHae-Ree JooKyung-Yol Yon
    • G03G005/047G03G005/14G03G015/22
    • G03G5/0609G03G5/0507G03G5/051G03G5/0525G03G5/0607G03G5/062G03G5/0696G03G5/14765G03G5/14769
    • A positively-charged electrophotographic organic photoreceptor includes an electrically conductive support, and a charge transport layer and a charge generating layer sequentially stacked on the electrically conductive support. The charge generating layer is formed by coating a charge generating layer forming composition that includes a fluorene compound, a charge generating material, a binder resin and an organic solvent on the charge transport layer, and drying. The organic photoreceptor has high sensitivity, while suppressing contamination of a charge generating layer during coating, and thicknesses of a charge transport layer and a charge generating layer may be adjusted. Also, the electrostatic properties of the organic photoreceptor, including charge potential and exposure potential, may be easily adjusted. The organic photoreceptor may be applied to an electrophotographic development system using a liquid toner having a small particle size and a high retained charge amount with an increased surface charge amount of the organic photoreceptor.
    • 带正电的电子照相有机感光体包括导电性支持体,以及依次层叠在导电性载体上的电荷输送层和电荷产生层。 电荷产生层通过在电荷输送层上涂布含有芴化合物,电荷产生材料,粘合剂树脂和有机溶剂的电荷产生层形成组合物并干燥而形成。 有机感光体具有高灵敏度,同时抑制涂布期间电荷产生层的污染,并且可以调节电荷传输层和电荷产生层的厚度。 此外,可以容易地调节包括电荷电位和曝光电位的有机感光体的静电特性。 可以使用具有小的粒径和高保留电荷量的液体调色剂将有机感光体施加到电子照相显影系统上,同时具有增加的有机感光体的表面电荷量。
    • 7. 发明申请
    • Double-layered positively-charged organic photoreceptor
    • 双层正电有机感光体
    • US20040091802A1
    • 2004-05-13
    • US10606147
    • 2003-06-26
    • SAMSUNG Electronics Co., Ltd.
    • Nam-Jeong LeeHae-ree JooSaburo YokotaKyung-yol YonHwan-koo LeeBeom-jun Kim
    • G03G005/05
    • G03G5/056G03G5/0564G03G5/0607G03G5/0609G03G5/076
    • A double-layered positively-charged organic photoreceptor has a charge transport layer with effective adhesion to an electroconductive support and effective resistance against dissolving when in contact with a hydrocarbon-based solvent of a wet developer. Therefore, the double-layered positively-charged organic photoreceptor requires neither anodizing on the electroconductive support nor an additional adhesive layer, and is compatible with wet developing methods. The double-layered positively-charged organic photoreceptor includes: an electroconductive support; a charge transport layer formed on a surface of the electroconductive support and including a charge transport material for transporting holes, a polycarbonate-based first binder resin, and a second binder resin of a polyester copolymer with a biphenylfluorene group; and a charge generating layer formed on the surface of the charge transport layer.
    • 双层带正电荷的有机感光体具有与导电性支持体有效粘合的电荷输送层,当与湿式显影剂的烃系溶剂接触时,有效抵抗溶解。 因此,双层带正电荷的有机感光体既不需要在导电性载体上进行阳极氧化也不需要额外的粘合剂层,并且与湿式显影方法兼容。 双层正电有机感光体包括:导电载体; 形成在导电性支持体的表面上的电荷传输层,包括用于输送孔的电荷输送材料,聚碳酸酯类第一粘合剂树脂和具有联苯芴基的聚酯共聚物的第二粘合剂树脂; 以及形成在电荷输送层的表面上的电荷产生层。
    • 9. 发明申请
    • Double-layered positively-charged organic photoreceptor
    • 双层正电有机感光体
    • US20040081902A1
    • 2004-04-29
    • US10682480
    • 2003-10-10
    • SAMSUNG Electronics Co., Ltd.
    • Nam-Jeong LeeSaburo YokotaKyung-Yol YonHwan-Koo LeeHae-Ree JooBeom-Jun Kim
    • B05D001/36G03G005/047
    • G03G5/0525G03G5/047Y10T428/31504
    • A double-layered positively-charged organic photoreceptor t does not suffer from contamination caused by charge transport compounds that dissolve out during coating of a charge generating layer, and in which the charge generating layer and a charge transport layer have suitable interfacial properties for effective charge transfer. The composition that forms a charge transport layer on an electroconductive support contains a first charge transport compound that is soluble in an acetate solvent, a second charge transport compound that is insoluble in an acetate solvent, a binder resin, and an organic solvent. The method of manufacturing the photoreceptor includes: coating a surface of an electroconductive support with the charge transport layer forming composition and drying the surface to form a charge transport layer; and coating a surface of the charge transport layer with a charge generating layer forming composition and drying the surface to form a charge generating layer.
    • 双层带正电荷的有机感光体t不会受到在电荷产生层的涂布期间溶出的电荷输送化合物引起的污染,并且其中电荷产生层和电荷输送层具有适当的界面性质以实现有效电荷 转让。 在导电载体上形成电荷输送层的组合物含有可溶于乙酸溶剂的第一电荷输送化合物,不溶于乙酸酯溶剂的第二电荷输送化合物,粘合剂树脂和有机溶剂。 制造感光体的方法包括:用电荷输送层形成组合物涂覆导电载体的表面并干燥表面以形成电荷输送层; 并用电荷产生层形成组合物涂覆电荷输送层的表面并干燥该表面以形成电荷产生层。