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    • 21. 发明申请
    • Photosensitive material for electrophotography and image forming device having the same
    • 用于电子照相的感光材料和具有该感光材料的图像形成装置
    • US20060210895A1
    • 2006-09-21
    • US10559187
    • 2004-05-31
    • Takatsugu ObataAkihiro KondohKazuya Ishida
    • Takatsugu ObataAkihiro KondohKazuya Ishida
    • G03G5/047
    • G03G5/0666C07C39/06G03G5/0614
    • An object of the invention is to provide a highly reliable electrophotographic photoreceptor having high sensitivity, excellent in light responsivity, not suffering from lowering of such characteristics even when it is used under a low temperature circumstance or in a high speed electrophotographic process, and with less fatigue degradation upon repetitive use. In a photosensitive layer of an electrophotoreceptor, an enamine compound represented by the following general formula (1), for example, the following structural formula is contained as a charge transporting substance, and further at least one of an antioxidant and a light stabilizer is contained. Accordingly, an electrophotographic photoreceptor excellent in sensitivity and light responsivity in various environments, and with less fatigue degradation upon repetitive use is realized.
    • 本发明的目的是提供一种具有高灵敏度,优异的光响应性的高度可靠的电子照相感光体,即使在低温环境或高速电子照相方法中使用也不会降低这些特性,并且具有较少的 重复使用时的疲劳退化。 在电子感受器的感光层中,含有下列通式(1)表示的烯胺化合物,例如以下结构式作为电荷输送物质,还含有抗氧化剂和光稳定剂中的至少一种 。 因此,实现了在各种环境下灵敏度和光响应性优异并且在重复使用时疲劳降低较少的电子照相感光体。
    • 24. 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。