公开(公告)号：US20050220499A1

公开(公告)日：2005-10-06

申请号：US11079883

申请日：2005-03-15

申请人： Akihiko Kawahara ,  Tadayuki Sawai ,  Kazuya Korematu ,  Toru Nishikawa

发明人： Akihiko Kawahara ,  Tadayuki Sawai ,  Kazuya Korematu ,  Toru Nishikawa

IPC分类号： G03G15/08 ,  C08J9/06 ,  F16C13/00

CPC分类号： G03G15/0808 ,  G03G2215/0617

摘要： A non-magnetic single component developing device that is included in combination with a photoreceptor in an image forming apparatus 1 of the electro-photographic system. The non-magnetic single component developing device includes a developing roller, a supplying roller, a doctor, a toner bath and a stirring blade. The supplying roller contains a rubber foam at least in its surface layer portion, the rubber foam including closed cells and open cells and having a foam ratio (porosity) of 0.75 to 0.85 and an average foam cell diameter of 350 to 500 μm.

摘要翻译： 与电摄影系统的图像形成装置1中的感光体组合包括的非磁性单组分显影装置。 非磁性单组分显影装置包括显影辊，供给辊，刮刀，调色剂浴和搅拌叶片。 供给辊至少在其表层部分包含橡胶泡沫，橡胶泡沫包括闭孔和开孔，泡沫比（孔隙率）为0.75至0.85，平均泡沫泡孔直径为350-500μm。

公开(公告)号：US07206539B2

公开(公告)日：2007-04-17

申请号：US11079883

申请日：2005-03-15

申请人： Akihiko Kawahara ,  Tadayuki Sawai ,  Kazuya Korematu ,  Toru Nishikawa

发明人： Akihiko Kawahara ,  Tadayuki Sawai ,  Kazuya Korematu ,  Toru Nishikawa

IPC分类号： G03G15/08

CPC分类号： G03G15/0808 ,  G03G2215/0617

摘要： A non-magnetic single component developing device that is included in combination with a photoreceptor in an image forming apparatus 1 of the electro-photographic system. The non-magnetic single component developing device includes a developing roller, a supplying roller, a doctor, a toner bath and a stirring blade. The supplying roller contains a rubber foam at least in its surface layer portion, the rubber foam including closed cells and open cells and having a foam ratio (porosity) of 0.75 to 0.85 and an average foam cell diameter of 350 to 500 μm.

摘要翻译： 与电摄影系统的图像形成装置1中的感光体组合包括的非磁性单组分显影装置。 非磁性单组分显影装置包括显影辊，供给辊，刮刀，调色剂浴和搅拌叶片。 供给辊至少在其表层部分包含橡胶泡沫，橡胶泡沫包括闭孔和开孔，泡沫比（孔隙率）为0.75至0.85，平均泡沫泡孔直径为350-500μm。

公开(公告)号：US06090514A

公开(公告)日：2000-07-18

申请号：US367897

申请日：1999-08-20

申请人： Mikio Kakui ,  Hirofumi Kawaguchi ,  Akihiko Kawahara ,  Kazunari Hamasaki ,  Yoshio Inagaki ,  Ayako Yashima

发明人： Mikio Kakui ,  Hirofumi Kawaguchi ,  Akihiko Kawahara ,  Kazunari Hamasaki ,  Yoshio Inagaki ,  Ayako Yashima

IPC分类号： G03G5/06

CPC分类号： G03G5/0666 ,  G03G5/0614 ,  G03G5/0657 ,  G03G5/0681 ,  G03G5/0696

摘要： The present invention provides an electrophotosensitive material comprising a conductive substrate and a single photosensitive layer containing a stilbene derivative (hole transferring material) represented by the general formula (1): ##STR1## (wherein R.sup.1, R.sup.2, R.sup.5 and R.sup.6 are the same or different and represent an alkyl group, an alkoxy group, an aryl group, an aralkyl group or a halogen atom; m, n, p and q are the same or different and represent an integer of 0 to 3, with the proviso that m and n represent a different integer when substituents represented by R.sup.1 and R.sup.2 are the same and that p and q represent a different integer when substituents represented by R.sup.5 and R.sup.6 are the same; and R.sup.3 and R.sup.4 are the same or different and represent a hydrogen atom or an alkyl group) and an electron transferring material, which is provided on the conductive substrate. This photosensitive material has high sensitivity and can be applied to any of positive and negative charging types with a single construction, and is also superior in optical characteristics.

摘要翻译： PCT No.PCT / JP98 / 00787 Sec。 371日期1999年8月20日 102（e）日期1999年8月20日PCT提交1998年2月25日PCT公布。 公开号WO98 / 38551 日期：1998年9月3日本发明提供一种电光敏材料，其包含导电性基材和含有通式（1）表示的二苯乙烯衍生物（空穴转移材料）的单一感光层：（其中R1，R2，R5和R6为 相同或不同，表示烷基，烷氧基，芳基，芳烷基或卤素原子; m，n，p和q相同或不同，表示0〜3的整数，条件是 当由R 1和R 2表示的取代基相同时，m和n表示不同的整数，并且当由R 5和R 6表示的取代基相同时，p和q表示不同的整数;并且R 3和R 4相同或不同，表示氢 原子或烷基）和电子转移材料，其设置在导电基板上。 该感光材料具有高灵敏度，并且可以应用于具有单一结构的任何正和负电荷类型，并且还具有优异的光学特性。

公开(公告)号：US6136485A

公开(公告)日：2000-10-24

申请号：US188342

申请日：1998-11-09

申请人： Kazuya Ishida ,  Satoshi Katayama ,  Takahiro Teramoto ,  Akihiko Kawahara ,  Kazushige Morita ,  Tomoko Kanazawa

发明人： Kazuya Ishida ,  Satoshi Katayama ,  Takahiro Teramoto ,  Akihiko Kawahara ,  Kazushige Morita ,  Tomoko Kanazawa

IPC分类号： G03G5/05 ,  C08K3/22 ,  C08L29/14 ,  G03G5/14

CPC分类号： G03G5/144 ,  G03G5/142

摘要： 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.

摘要翻译： 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。

公开(公告)号：US5821021A

公开(公告)日：1998-10-13

申请号：US791405

申请日：1997-01-30

申请人： Akihiko Kawahara

发明人： Akihiko Kawahara

IPC分类号： G03G5/047 ,  G03G5/06 ,  G03G5/087 ,  G03G5/09

CPC分类号： G03G5/047 ,  G03G5/06 ,  G03G5/0696 ,  G03G5/087

摘要： A photosensitive material for electrophotography, wherein the charge-generating agent comprises a P-type charge-generating pigment and an N-type charge-generating pigment in combination, at least part of these pigments being present in the form of aggregates in the photosensitive layer. The photosensitive material will assume the form of either a single dispersion type or a laminated layer type, and exhibits very high carrier generation efficiency, strikingly improved sensitivity on the side of long wavelengths, excellent balance in the spectral sensitivity and property after repetitively used, and can hence be effectively used for forming image by the electrophotography.

摘要翻译： 一种用于电子照相的感光材料，其中电荷产生剂包括P型电荷产生颜料和N型电荷产生颜料的组合，这些颜料中的至少一部分以感光层中聚集体的形式存在 。 感光材料将采用单一分散型或叠层式的形式，并且表现出非常高的载流子生成效率，显着提高了在长波长侧的灵敏度，在重复使用后的光谱灵敏度和性能方面的优异平衡，以及 因此可以有效地用于通过电子照相术形成图像。

公开(公告)号：US5656407A

公开(公告)日：1997-08-12

申请号：US266503

申请日：1994-06-27

申请人： Akihiko Kawahara

发明人： Akihiko Kawahara

IPC分类号： G03G5/047 ,  G03G5/06 ,  G03G5/087 ,  G03G5/09

CPC分类号： G03G5/047 ,  G03G5/06 ,  G03G5/0696 ,  G03G5/087

摘要： A photosensitive material for electrophotography, wherein the charge-generating agent comprises a P-type charge-generating pigment and an N-type charge-generating pigment in combination, at least part of these pigments being present in the form of aggregates in the photosensitive layer. The photosensitive material will assume the form of either a single dispersion type or a laminated layer type, and exhibits very high carrier generation efficiency, strikingly improved sensitivity on the side of long wavelengths, excellent balance in the spectral sensitivity and property after repetitively used, and can hence be effectively used for forming image by the electrophotography.

摘要翻译： 一种用于电子照相的感光材料，其中电荷产生剂包括P型电荷产生颜料和N型电荷产生颜料的组合，这些颜料中的至少一部分以感光层中聚集体的形式存在 。 感光材料将采用单一分散型或叠层式的形式，并且表现出非常高的载流子生成效率，显着提高了在长波长侧的灵敏度，在重复使用后的光谱灵敏度和性能方面的优异平衡，以及 因此可以有效地用于通过电子照相术形成图像。

公开(公告)号：US6136484A

公开(公告)日：2000-10-24

申请号：US322926

申请日：1999-06-01

申请人： Satoshi Katayama ,  Yoshihide Shimoda ,  Makoto Kurokawa ,  Mikio Kakui ,  Hiroko Ishibashi ,  Tadashi Nakamura ,  Tatsuhiro Morita ,  Masayuki Sakamoto ,  Kazushige Morita ,  Tomoko Kanazawa ,  Akihiko Kawahara

发明人： Satoshi Katayama ,  Yoshihide Shimoda ,  Makoto Kurokawa ,  Mikio Kakui ,  Hiroko Ishibashi ,  Tadashi Nakamura ,  Tatsuhiro Morita ,  Masayuki Sakamoto ,  Kazushige Morita ,  Tomoko Kanazawa ,  Akihiko Kawahara

IPC分类号： G03G5/06 ,  G03G5/14

CPC分类号： G03G5/142 ,  G03G5/0696 ,  G03G5/144

摘要： Highly sensitive and highly durable electrophotographic photoreceptors which generate faultless images can be produced by forming the under-coating layer on the conductive support and forming the photoreceptive layer on the layer. The under-coating layer contains dendritic titanium oxide. The under-coating layer contains the dendritic titanium oxide of which the surface is coated with (a) metal oxide(s) and/or (an) organic compound(s). The photoreceptive layer contains a phthalocyanine pigment, and the under-coating layer contains dendritic or needle-like titanium oxide of which the surface is coated with (a) metal oxide(s) and/or (an) organic compound(s). The photoreceptive layer contains a phthalocyanine pigment, and the under-coating layer contains dendritic or needle-like titanium oxide, of which the surface is coated with (a) metal oxide(s) and/or (an) organic compound(s), and an alcohol soluble polyamide resin.

摘要翻译： 产生无故障图像的高度敏感和高度耐用的电子照相感光体可以通过在导电支撑上形成底涂层并在该层上形成感光层来制备。 底涂层含有树枝状氧化钛。 底涂层含有表面被（a）金属氧化物和/或（有机化合物）涂覆的树枝状氧化钛。 感光层含有酞菁颜料，底涂层含有表面涂有（a）金属氧化物和/或（有机化合物）的树枝状或针状氧化钛。 感光层含有酞菁颜料，底涂层含有树枝状或针状氧化钛，其表面被（a）金属氧化物和/或（有机化合物）涂覆， 和醇溶性聚酰胺树脂。

公开(公告)号：US6054237A

公开(公告)日：2000-04-25

申请号：US210785

申请日：1998-12-15

申请人： Kazuya Ishida ,  Kiyofumi Morimoto ,  Satoshi Katayama ,  Takahiro Teramoto ,  Akihiko Kawahara ,  Kazushige Morita

发明人： Kazuya Ishida ,  Kiyofumi Morimoto ,  Satoshi Katayama ,  Takahiro Teramoto ,  Akihiko Kawahara ,  Kazushige Morita

IPC分类号： G03G5/00 ,  C08K5/56 ,  C08L27/06 ,  C08L31/04 ,  G03G5/05 ,  G03G5/06

CPC分类号： G03G5/0539 ,  G03G5/0542 ,  G03G5/0696

摘要： An object of the invention is to provide a highly characteristic image using an electrophotographic photoreceptor of which a charge-generating layer can be produced with a better coating property and which is highly sensitive and electrostatically highly stable in repeated use. The charge-generating layer of a function-separated type photoreceptor contains a n-type non-metallic phthalocyanine and a copolymer of vinyl chloride-vinyl acetate type. Particularly, the ratio of the .tau.-type non-metallic phthalocyanine to the copolymer of vinyl chloride-vinyl acetate type is fixed at 1/3-3/1 by weight. The thickness of the charge-generating layer is fixed at 0.1-0.6 .mu.m. As the copolymer of vinyl chloride-vinyl acetate type, copolymers of vinyl chloride-vinyl acetate, vinyl chloride-vinyl acetate-maleic acid, or vinyl chloride-vinyl acetate-vinyl alcohol are selected. Particularly, it is favorable to select those containing at least 10% by weight of the vinyl alcohol component. The charge-generating layer is formed with a liquid coating material using a ketone solvent as dispersant. The aforementioned photoreceptor is applied to an image-forming apparatus using an inversion development process.

摘要翻译： 本发明的目的是提供使用电子照相感光体的高度特征的图像，其中可以制备具有更好涂层性能的电荷产生层，并且其在重复使用中是高度敏感的和静电性高度稳定的。 功能分离型感光体的电荷产生层含有n型非金属酞菁和氯乙烯 - 乙酸乙烯酯类共聚物。 特别地，将T型非金属酞菁与氯乙烯 - 乙酸乙烯酯类共聚物的比例固定为1 / 3-3 / 1重量比。 电荷产生层的厚度固定在0.1-0.6μm。 作为氯乙烯 - 乙酸乙烯酯型共聚物，选择氯乙烯 - 乙酸乙烯酯，氯乙烯 - 乙酸乙烯酯 - 马来酸或氯乙烯 - 乙酸乙烯酯 - 乙烯醇的共聚物。 特别地，选择含有至少10重量％的乙烯醇组分的那些。 电荷产生层由使用酮溶剂作为分散剂的液体涂料形成。 使用反转显影处理将上述感光体应用于图像形成装置。

公开(公告)号：US5274084A

公开(公告)日：1993-12-28

申请号：US980677

申请日：1992-11-24

申请人： Eiichi Miyamoto ,  Yasuyuki Hanatani ,  Hiroaki Iwasaki ,  Yasufumi Mizuta ,  Akihiko Kawahara

发明人： Eiichi Miyamoto ,  Yasuyuki Hanatani ,  Hiroaki Iwasaki ,  Yasufumi Mizuta ,  Akihiko Kawahara

IPC分类号： C09B35/039 ,  G03G5/06

CPC分类号： C09B35/039 ,  G03G5/0679

摘要： An azo compound represented by the following general formula IA and an electrophotographic photosensitive member comprising a photosensitive layer containing the azo compound: ##STR1## wherein R.sup.1 and R.sup.2 are the same or different from each other and indicate a hydrogen atom, an alkyl group, an alkenyl group, a hydroxyl group, an alkoxy group, a carboxy group, an alkoxy carbonyl group, an acyl group, an aryl group, a halogen group or a cyano group, respectively; R.sup.14 indicates a hydrogen atom, a halogen group, an alkyl group, an alkoxy group, an aryl group, an amino group, a cyano group, a nitro group or a sulfoxide group; and A indicates a coupler residue having an acceptor property.

公开(公告)号：US5260157A

公开(公告)日：1993-11-09

申请号：US599858

申请日：1990-10-19

申请人： Yasufumi Mizuta ,  Akihiko Kawahara ,  Kaname Nakatani ,  Nariaki Tanaka

发明人： Yasufumi Mizuta ,  Akihiko Kawahara ,  Kaname Nakatani ,  Nariaki Tanaka

IPC分类号： G03G5/147

CPC分类号： G03G5/14704 ,  G03G5/14769 ,  G03G5/14773 ,  G03G5/14791

摘要： An electrophotographic photosensitive element comprising a photosensitive layer and a surface protective layer on the photosensitive layer, the surface protective layer comprising a thermosetting silicone resin, and a methyl-butyl etherified melamine-formaldehyde resin in an amount of from 0.1 to 30 parts by weight per 100 parts by weight of the non-volatile solid components of the thermosetting silicone resin, an electrophotographic photosensitive element comprising a photosensitive layer and a surface protective layer on the photosensitive layer, the surface protective layer comprising a thermosetting silicone resin, and an acrylic copolymer having an average molecular weight of 6,000 or less in an amount of from 0.1 to 30 parts by weight per 100 parts by weight of the non-volatile solid components of the thermosetting silicone resin, and an electrophotographic photosensitive element comprising a photosensitive layer and a surface protective layer on the photosensitive layer, the surface protective layer containing a thermosetting silicone resin, a methyl etherified melamine-formaldehyde resin and/or a methyl-butyl mixed etherified melamine-formaldehyde resin in an amount of from 0.1 to 50 parts by weight per 100 parts by weight of the non-volatile solid components of the thermosetting silicone resin, and a thermoplastic resin in an amount of from 1 to 11 wt % to a total amount of the non-volatile solid components of the thermosetting silicone resin and the methyl etherified melamine-formaldehyde resin and/or the methyl-butyl mixed etherified melamine-formaldehyde resin.