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    Electrophotographic photosensitive member having S-type photo-induced potential decay and electrophotographic apparatus
    3.
    发明授权
    Electrophotographic photosensitive member having S-type photo-induced potential decay and electrophotographic apparatus 失效
    具有S型光诱导电位衰减和电子照相设备的电子照相感光构件

    公开(公告)号：US5942361A

    公开(公告)日：1999-08-24

    申请号：US872107

    申请日：1997-06-10

    申请人： Taketoshi Hoshizaki ,  Yasuo Sakaguchi ,  Yasuhiro Yamaguchi ,  Ryosaku Igarashi

    发明人： Taketoshi Hoshizaki ,  Yasuo Sakaguchi ,  Yasuhiro Yamaguchi ,  Ryosaku Igarashi

    IPC分类号： C08G63/685 ,  C08G73/00 ,  C08L69/00 ,  G03G5/047 ,  G03G5/05 ,  G03G5/06 ,  G03G5/07

    CPC分类号： G03G5/076 ,  G03G5/047 ,  G03G5/0575

    摘要： An electrophotographic photosensitive element having S-type photo-induced potential decay characteristics and an electrophotographic apparatus using the photosensitive member are provided.The photosensitive member comprises a charge generation layer and a charge transport layer on an electroconductive substrate. The charge transport layer contains a polymer in a phase separated state with a modulated structure, comprising an electrically inactive phase and a charge transporting phase. The amount of exposure required for 50% potential decay is less than 5 times the exposure amount required for 10% potential decay. The modulated structure includes, for example, a mixture of insulating polymer and charge transporting polymer and the like. The modulated structure can be formed by the method of separating a homogeneous phase of these polymers into two phases.

    摘要翻译： 提供具有S型光诱导电位衰减特性的电子照相感光元件和使用该感光元件的电子照相设备。 感光构件包括导电衬底上的电荷产生层和电荷输送层。 电荷传输层包含具有调制结构的相分离状态的聚合物，包括电不活跃相和电荷输送相。 50％电位衰减所需的曝光量小于10％潜在衰变所需的曝光量的5倍。 调制结构包括例如绝缘聚合物和电荷输送聚合物的混合物等。 可以通过将这些聚合物的均相分离成两相的方法形成调制结构。

    Electrophotographic photoreceptor, process cartridge and electrophotographic apparatus using the same
    5.
    发明授权
    Electrophotographic photoreceptor, process cartridge and electrophotographic apparatus using the same 失效
    电子照相感光体，处理盒和使用其的电子照相设备

    公开(公告)号：US06395440B1

    公开(公告)日：2002-05-28

    申请号：US09706864

    申请日：2000-11-07

    申请人： Yasuhiro Yamaguchi ,  Masakazu Iijima ,  Fumiaki Tambo ,  Masahiro Iwasaki ,  Taketoshi Hoshizaki ,  Yasuo Sakaguchi

    发明人： Yasuhiro Yamaguchi ,  Masakazu Iijima ,  Fumiaki Tambo ,  Masahiro Iwasaki ,  Taketoshi Hoshizaki ,  Yasuo Sakaguchi

    IPC分类号： G03G5047

    CPC分类号： G03G5/07 ,  G03G5/047 ,  G03G5/0592 ,  G03G5/0596 ,  G03G5/071 ,  G03G5/076

    摘要： An electrophotographic photoreceptor having a bipolar charge transport layer with a hole-transporting property and an electron-transporting property, the bipolar charge transport layer containing a block copolymer or a graft copolymer, and a process cartridge and an electrophotographic apparatus using the electrophotographic photoreceptor. The electrophotographic photoreceptor has a high performance and a long life and can provide various properties required for a photoreceptor by forming, the bipolar charge transport layer which is excellent in hole- and electron-transporting properties, mechanical strengths, a discharge product resistance and a coating dispersion stability, and the process cartridge and the electrophotographic apparatus using the electrophotographic photoreceptor can provide a high performance and a high durability.

    摘要翻译： 具有具有空穴传输性和电子传输性的双极电荷传输层的电子照相感光体，双极电荷输送层含有嵌段共聚物或接枝共聚物，以及使用电子照相感光体的处理盒和电子照相设备。 电子照相感光体具有高性能和长寿命，可以通过成型提供感光体所需的各种性能，空穴和电子传输性能优异的机械强度，放电产物电阻和涂层的双极电荷传输层 分散稳定性，并且使用电子照相感光体的处理盒和电子照相设备可以提供高性能和高耐久性。

    Electrophotographic photoreceptor
    6.
    发明授权
    Electrophotographic photoreceptor 失效
    电子照相感光体

    公开(公告)号：US5424159A

    公开(公告)日：1995-06-13

    申请号：US102246

    申请日：1993-08-05

    申请人： Kiyokazu Mashimo ,  Fumio Ojima ,  Toru Ishii ,  Tomoo Kobayashi ,  Taketoshi Hoshizaki ,  Ryosaku Igarashi ,  Tomozumi Uesaka

    发明人： Kiyokazu Mashimo ,  Fumio Ojima ,  Toru Ishii ,  Tomoo Kobayashi ,  Taketoshi Hoshizaki ,  Ryosaku Igarashi ,  Tomozumi Uesaka

    IPC分类号： G03G5/047 ,  G03G5/05 ,  G03G5/06 ,  G03G5/09

    CPC分类号： G03G5/047 ,  G03G5/0564 ,  G03G5/0614 ,  G03G5/0616

    摘要： An electrophotographic photoreceptor comprising a conductive substrate having formed thereon a photosensitive layer containing at least a charge generating material, a charge transporting material, and a binder resin, wherein said charge transporting material comprises a benzidine compound and/or a low-molecular weight charge transporting material having a molecular weight of from 200 to 400 and said binder resin mainly comprises a polycarbonate resin comprising a recurring unit represented by formula (I): ##STR1## and having a viscosity-average molecular weight ranging from 50,000 and 100,000, said charge transporting material and said binder resin being at a weight ratio of from 25:75 to 60:40. The photoreceptor exhibits improved abrasion resistance and improved peeling resistance while retaining excellent electrical and image characteristics.

    摘要翻译： 一种电子照相感光体，包括在其上形成有至少含有电荷产生材料，电荷输送材料和粘合剂树脂的感光层的导电基材，其中所述电荷输送材料包含联苯胺化合物和/或低分子量电荷输送 分子量为200-400的材料和所述粘结剂树脂主要包含一种聚碳酸酯树脂，其包含由式（I）代表的重复单元：（I），粘均分子量为50,000和100,000， 所述电荷输送材料和所述粘合剂树脂的重量比为25:75至60:40。 感光体表现出改进的耐磨性和改善的耐剥离性，同时保持优异的电气和图像特性。

    Method for determining termination time of the step of dispersing a coating composition for photosensitive layer of electrophotographic photoreceptor and electrophotographic photoreceptor prepared using the dispersion
    7.
    发明授权
    Method for determining termination time of the step of dispersing a coating composition for photosensitive layer of electrophotographic photoreceptor and electrophotographic photoreceptor prepared using the dispersion 失效
    用于分散使用该分散体制备的电子照相感光体和电子照相感光体的感光层的涂料组合物分散步骤的终止时间的方法

    公开(公告)号：US5403688A

    公开(公告)日：1995-04-04

    申请号：US646312

    申请日：1991-01-28

    申请人： Seiji Ashiya ,  Taketoshi Hoshizaki ,  Ryosaku Igarashi ,  Koji Bando ,  Masanori Murase ,  Takahiro Suzuki ,  Masahiko Hodumi ,  Sadao Okano

    发明人： Seiji Ashiya ,  Taketoshi Hoshizaki ,  Ryosaku Igarashi ,  Koji Bando ,  Masanori Murase ,  Takahiro Suzuki ,  Masahiko Hodumi ,  Sadao Okano

    IPC分类号： G03G5/00 ,  G03G5/05 ,  G03G15/08

    CPC分类号： G03G5/0525

    摘要： A method for determining a termination time of the step of dispersing a coating composition for a photosensitive layer, containing a binder resin, a powdery charge generating material and a solvent, is disclosed, which comprises (i) providing coating (I) on a substrate by coating the coating composition, following by drying, (ii) providing coating (II) on a substrate by dispersing the coating composition using a dispersion medium to fine the powdery charge generating material, followed by drying, (iii) measuring absorbances of coating (I) at two wavelengths within a short wavelength region and a long wavelength region, respectively, of the spectral absorption wavelength of the charge generating material, (iv) measuring absorbances of coating (II) at the two wavelengthes within the short wavelength region and the long wavelength region, respectively, and (v) calculating spectral absorbance ratios of coatings (I) and (II), respectively, from the following equation: ##EQU1## wherein the dispersing of the coating composition is terminated when the ratio of the spectral absorbance ratio of coating (II) to that of coating (I) exceed a predetermined value.

    摘要翻译： 公开了一种用于确定分散含有粘合剂树脂，粉末电荷产生材料和溶剂的感光层用涂料组合物的步骤的终止时间的方法，其包括（i）在基材上提供涂层（I） 通过涂覆涂料组合物，然后通过干燥，（ii）通过使用分散介质分散涂料组合物在基材上提供涂层（II），以使粉末电荷产生材料细化，然后干燥，（iii）测量涂层的吸光度（ I）分别在电荷产生材料的光谱吸收波长的短波长区域和长波长区域内的两个波长处，（iv）测量短波长区域内的两个波长处的涂层（II）的吸光度，以及 分别从长波长区域和（v）分别根据以下等式计算涂层（I）和（II）的光谱吸光度比：其中，二 当涂层（II）的光谱吸收比与涂层（I）的光谱吸收比之比超过预定值时，终止涂料组合物的喷涂。

    Titanyl phthalocyanine crystal and electrophotographic photoreceptor using the same
    8.
    发明授权
    Titanyl phthalocyanine crystal and electrophotographic photoreceptor using the same 失效
    酞菁钛结晶和使用其的电子照相感光体

    公开(公告)号：US06268096B1

    公开(公告)日：2001-07-31

    申请号：US08401761

    申请日：1995-03-09

    申请人： Hidemi Nukada ,  Yasuo Sakaguchi ,  Taketoshi Hoshizaki ,  Fumio Ojima ,  Masayuki Nishikawa ,  Kohichi Yamamoto ,  Yumiko Komori

    发明人： Hidemi Nukada ,  Yasuo Sakaguchi ,  Taketoshi Hoshizaki ,  Fumio Ojima ,  Masayuki Nishikawa ,  Kohichi Yamamoto ,  Yumiko Komori

    IPC分类号： G03G506

    CPC分类号： C09B67/0016 ,  C09B67/0026 ,  G03G5/0696

    摘要： A novel titanyl phthalocyanine crystal, a photoconductive material comprising the same, and an electrophotographic photoreceptor using the same are disclosed. The titanyl phthalocyanine crystal has a primary particle diameter ranging from 0.03 to 0.15 &mgr;m, shows a maximum X-ray diffraction peak at a Bragg angle (2&thgr;±0.2°) of 27.3°, has a ellipsoidal tabular form, and has a BET specific surface area of not less than 35 m2/g. The crystal has improved crystal form stability against solvents and holds its crystal form for an extended period of time in a dispersed and coated state. An electrophotographic photoreceptor using the crystal as a photoconductive material is excellent in sensitivity, stability, and durability.

    摘要翻译： 公开了一种新的氧钛酞菁晶体，含有它的光导材料和使用其的电子照相感光体。 氧钛酞菁晶体的初级粒径为0.03〜0.15μm，在布拉格角（2θ±0.2°）为27.3°时显示出最大的X射线衍射峰，具有椭圆形的平板状，并具有BET比表面积 面积不低于35 m2 / g。 该晶体具有改善的晶体形式对溶剂的稳定性并且在分散和涂覆状态下长时间保持其晶体形式。 使用该晶体作为光电导材料的电子照相感光体具有优异的灵敏度，稳定性和耐久性。

    Charge transporting material and method of preparing charge transporting particulates used therein
    9.
    发明授权
    Charge transporting material and method of preparing charge transporting particulates used therein 失效
    电荷输送材料及其中使用的电荷输送微粒的制备方法

    公开(公告)号：US5965063A

    公开(公告)日：1999-10-12

    申请号：US971722

    申请日：1997-11-17

    申请人： Takeshi Agata ,  Masakazu Iijima ,  Wataru Yamada ,  Katsumi Nukada ,  Yasuhiro Yamaguchi ,  Taketoshi Hoshizaki

    发明人： Takeshi Agata ,  Masakazu Iijima ,  Wataru Yamada ,  Katsumi Nukada ,  Yasuhiro Yamaguchi ,  Taketoshi Hoshizaki

    IPC分类号： G03G5/06 ,  C09K11/06 ,  G03G5/07 ,  H01L51/30 ,  H01L51/50 ,  H01B1/12 ,  B32B5/00 ,  H01B1/20

    CPC分类号： H01L51/5012 ,  C09K11/06 ,  H01L51/004 ,  Y02E10/549 ,  Y10T428/2998

    摘要： Disclosed are a charge transporting material useful as a material for organic electronic devices such as an electrophotographic photoreceptor, an organic EL device, and an organic solar cell and a process for the preparation of charge transporting fine particles. The charge transporting material comprises charge transporting fine particles formed with a charge transporting organic compound as an essential component, said charge transporting organic compound being selected from high molecular compounds and low molecular compounds, each having a positive hole transporting property or electron transporting property. The fine particles are granulated by emulsion dispersion, with a preferred average particle size of 0.01 to 50 .mu.m, and particle size distribution of 1.0 to 2.0 in terms of the square root of the ratio of 90% average particle size to 10% average particle size of the total volume or total number of the fine particles. At least one portion of the surface of the fine particles may be covered with a second compound which may react with said charge transporting compound.

    摘要翻译： 公开了可用作电子照相感光体，有机EL器件和有机太阳能电池等有机电子器件的材料的电荷输送材料以及电荷输送用微粒的制造方法。 电荷输送材料包括以电荷输送有机化合物为必须成分形成的电荷输送微粒，所述电荷输送有机化合物选自具有空穴传输性或空穴传输性的高分子化合物和低分子化合物。 细颗粒通过乳液分散体造粒，优选的平均粒度为0.01〜50μm，粒径分布为1.0〜2.0，平均粒径为90％，平均粒径为10％ 总体积的大小或细颗粒的总数。 微粒表面的至少一部分可以被可与所述电荷输送化合物反应的第二化合物覆盖。

    Titanyl phthalocyanine crystal
    10.
    发明授权
    Titanyl phthalocyanine crystal 失效
    钛菁酞菁结晶

    公开(公告)号：US5440029A

    公开(公告)日：1995-08-08

    申请号：US109984

    申请日：1993-08-23

    申请人： Hidemi Nukada ,  Yasuo Sakaguchi ,  Taketoshi Hoshizaki ,  Fumio Ojima ,  Masayuki Nishikawa ,  Kohichi Yamamoto ,  Yumiko Komori

    发明人： Hidemi Nukada ,  Yasuo Sakaguchi ,  Taketoshi Hoshizaki ,  Fumio Ojima ,  Masayuki Nishikawa ,  Kohichi Yamamoto ,  Yumiko Komori

    IPC分类号： G03G5/06 ,  C09B67/12 ,  C09B67/50 ,  C09B47/04

    CPC分类号： C09B67/0016 ,  C09B67/0026 ,  G03G5/0696

    摘要： A novel titanyl phthalocyanine crystal, a photoconductive material comprising the same, and an electrophotographic photoreceptor using the same are disclosed. The titanyl phthalocyanine crystal has a primary particle diameter ranging from 0.03 to 0.15 .mu.m, shows a maximum X-ray diffraction peak at a Bragg angle (2.theta..+-.0.2.degree.) of 27.3.degree., has a ellipsoidal tabular form, and has a BET specific surface area of not less than 35 m.sup.2 /g. The crystal has improved crystal form stability against solvents and holds its crystal form for an extended period of time in a dispersed and coated state. An electrophotographic photoreceptor using the crystal as a photoconductive material is excellent in sensitivity, stability, and durability.

    摘要翻译： 公开了一种新的氧钛酞菁晶体，含有它的光导材料和使用其的电子照相感光体。 钛酞菁晶体的一次粒径为0.03〜0.15μm，在27.3°的布拉格角（2θ+/- 0.2°）处显示出最大的X射线衍射峰，具有椭圆形的片状，并具有 BET比表面积不小于35m 2 / g。 该晶体具有改善的晶体形式对溶剂的稳定性并且在分散和涂覆状态下长时间保持其晶体形式。 使用该晶体作为光电导材料的电子照相感光体具有优异的灵敏度，稳定性和耐久性。