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    • 1. 发明申请
    • ELECTROPHOTOGRAPHIC PHOTOCONDUCTOR AND IMAGE FORMING APPARATUS USING THE SAME
    • 电子照相光电子器件和使用它的图像形成装置
    • US20110104600A1
    • 2011-05-05
    • US12914151
    • 2010-10-28
    • Takahiro KurauchiSatoshi KatayamaKoichi Toriyama
    • Takahiro KurauchiSatoshi KatayamaKoichi Toriyama
    • G03G15/00
    • G03G5/144G03G5/0614G03G15/75
    • A function separation type electrophotographic photoconductor comprising: a conductive support; an undercoat layer formed on the conductive support; a charge generation layer formed on the undercoat layer; and a charge transfer layer formed on the charge generation layer, the undercoat layer containing at least a binder resin and metal oxide microparticles subjected to surface treatment with anhydrous silicon dioxide, the charge transfer layer containing at least a binder resin and an enamine compound represented by the following general formula (1): wherein one or more of R1, R2, R3, R4 and R5 represent a C6-C10 aryl group that may have a substituent; the others each represent hydrogen atom or C1-C4 alkyl, C4-C9 heterocyclic, C7-C16 aralkyl or C11-C16 arylidene alkyl group that may have a substituent; or R2 and R3 together with carbon atoms with which they are combined may form a cyclic or condensed cyclic group that may have a substituent.
    • 一种功能分离型电子照相感光体,包括:导电性支持体; 形成在导电支撑体上的底涂层; 形成在底涂层上的电荷产生层; 以及形成在电荷产生层上的电荷转移层,至少含有粘合剂树脂的底涂层和用无水二氧化硅进行表面处理的金属氧化物微粒,电荷转移层至少含有粘合剂树脂和由 以下通式(1):其中R 1,R 2,R 3,R 4和R 5中的一个或多个表示可以具有取代基的C 6 -C 10芳基; 其余各自表示氢原子或可具有取代基的C 1 -C 4烷基,C 4 -C 9杂环,C 7 -C 16芳烷基或C 11 -C 16亚芳基烷基; 或者R 2和R 3与它们所组合的碳原子一起形成可以具有取代基的环状或稠合的环状基团。
    • 6. 发明授权
    • Electrophotographic photoreceptor and image forming apparatus including the same
    • 电子照相感光体及其成像装置
    • US08709690B2
    • 2014-04-29
    • US12841397
    • 2010-07-22
    • Tomomi NakamuraSatoshi Katayama
    • Tomomi NakamuraSatoshi Katayama
    • G03G15/00
    • G03G5/0696G03G5/0571G03G5/144G03G15/75
    • A photoreceptor comprising an undercoat layer between a conductive support and a photosensitive layer, wherein the undercoat layer contains at least metal oxide microparticles coated with anhydrous silicon dioxide and a first binder resin, the photosensitive layer is a monolayered photosensitive layer containing at least a charge generation material and a charge transport material or a multilayered photosensitive layer formed of a charge generation layer containing a charge generation material and a charge transport layer containing a charge transport material stacked in this order or in an inverse order, and the charge generation material contains a crystal type oxotitanylphthalocyanine having peaks in an X-ray diffraction spectrum with Cu—Kα characteristic X-rays (0.15418 nm) at Bragg angles (2θ±0.2°) of 7.3°, 9.4°, 9.6°, 11.6°, 13.3°, 17.9°, 24.1° and 27.2°, in which a peak bundle formed by overlapping the peaks at 9.4° and 9.6° is a largest peak, and the peak at 27.2° is a second largest peak; and an X-type metal-free phthalocyanine having peaks in the X-ray diffraction spectrum at Bragg angles (2θ±0.2°) of 7.5°, 9.1°, 16.7°, 17.3° and 22.3°.
    • 一种感光体,其在导电性支持体和感光层之间具有底涂层,其中,底涂层至少含有被无水二氧化硅覆盖的金属氧化物微粒和第一粘合剂树脂,感光层为至少含有电荷产生的单层感光层 材料和电荷传输材料或由包含电荷产生材料的电荷产生层和包含电荷输送材料的电荷输送材料构成的多层感光层,其中电荷输送材料按顺序或顺序堆叠,电荷产生材料含有晶体 在具有Cu-Kα特征X射线(0.15418nm)的X射线衍射光谱中具有7.3°,9.4°,9.6°,11.6°,13.3°,17.9°的布拉格角(2θ;±0.2°)处具有峰值的氧代钛氧基酞菁 °,24.1°和27.2°,其中通过重叠9.4°和9.6°的峰形成的峰值束是最大峰值,峰值 在27.2°是第二大峰; 以及在布拉格角(2θ=±0.2°)为7.5°,9.1°,16.7°,17.3°和22.3°的X射线衍射光谱中具有峰值的X型无金属酞菁。
    • 10. 发明授权
    • Electrophotographic photoreceptor, process for production thereof, and
image-forming apparatus using same
    • 电子照相感光体及其制造方法以及使用其的图像形成装置
    • US6136485A
    • 2000-10-24
    • US188342
    • 1998-11-09
    • Kazuya IshidaSatoshi KatayamaTakahiro TeramotoAkihiko KawaharaKazushige MoritaTomoko Kanazawa
    • Kazuya IshidaSatoshi KatayamaTakahiro TeramotoAkihiko KawaharaKazushige MoritaTomoko Kanazawa
    • G03G5/05C08K3/22C08L29/14G03G5/14
    • G03G5/144G03G5/142
    • The object of the invention is to provide a highly characteristic and lesser defective image using an electrophotographic photoreceptor which can be produced with a better coating property and which is highly sensitive and hardly loses the electrostatic stability during repeated use. A water-soluble or water/alcohol-soluble polyvinyl acetal and an inorganic pigment are involved in an underlayer provided between a conductive support and a photoconductive layer. Particularly, it is favorable to use titanium oxide as the inorganic pigment, make the ratio of polyvinyl acetal/titanium oxide 1/9-9/1 by weight, make the underlayer 0.5-5 .mu.m in thickness, use the titanium oxide of which the surface is treated with alumina, use the titanium oxide of which the titanium oxide component is 95% by weight or lower and of which the surface is treated with alumina, use the polyvinyl acetal of which the sodium ion concentration is 40 ppm or lower, and use the photo-conductive layer which contains a vinyl chloride-vinyl acetate type copolymer. As for a dispersing medium for coating the underlayer, water/alcohol=1/9-7/3 (ratio by weight) is selected. The aforementioned photoreceptor is applied to an image-forming apparatus using an inversion development process.
    • 本发明的目的是提供一种使用电子照相感光体的高度特征和较小的缺陷图像,该电子照相感光体可以以更好的涂层性能制造,并且在反复使用中高度敏感并且几乎不损失静电稳定性。 水溶性或水/醇可溶性聚乙烯醇缩醛和无机颜料参与设置在导电载体和光电导层之间的底层。 特别是,优选使用氧化钛作为无机颜料,使聚乙烯醇缩醛/氧化钛的比例为1 / 9-9 / 1,使底层的厚度为0.5-5μm,使用其中的氧化钛 用氧化铝处理表面,使用氧化钛成分为95重量%以下的氧化钛,其表面用氧化铝处理,使用钠离子浓度为40ppm以下的聚乙烯醇缩醛, 并使用含有氯乙烯 - 乙酸乙烯酯型共聚物的光导层。 对于用于涂覆底层的分散介质,选择水/醇= 1 / 9-7 / 3(重量比)。 使用反转显影处理将上述感光体应用于图像形成装置。