公开(公告)号：US4877702A

公开(公告)日：1989-10-31

申请号：US263255

申请日：1988-10-27

申请人： Eiichi Miyamoto ,  Nariaki Mutou ,  Tooru Nakazawa

发明人： Eiichi Miyamoto ,  Nariaki Mutou ,  Tooru Nakazawa

IPC分类号： G03G5/06

CPC分类号： G03G5/0614 ,  G03G5/0657

摘要： There is disclosed an electrophotographic sensitive layer which is provided with a single-layer type sensitive layer containing a specific perylene type compound as an electric charge generating substance, a specific diamine derivative of the following general formula as an electric charge transferring substance, and a binding resin. ##STR1## wherein R.sup.5, R.sup.6, R.sup.7, and R.sup.8 independently stand for either a group of the general formula: ##STR2## or a group of the general formula: ##STR3##

公开(公告)号：US07555241B2

公开(公告)日：2009-06-30

申请号：US11503812

申请日：2006-08-14

申请人： Makoto Shishido ,  Shiho Okawa ,  Eiichi Miyamoto ,  Yasufumi Mizuta

发明人： Makoto Shishido ,  Shiho Okawa ,  Eiichi Miyamoto ,  Yasufumi Mizuta

IPC分类号： G03G15/00 ,  G03G21/00

CPC分类号： G03G21/06

摘要： An image forming apparatus which can exhibit an excellent charge eliminating effect by erasing a transfer memory using a precharging device with optimized conditions even when a positively-charged single-layer-type electrophotographic photoconductor is used as a photoconductor. In the image forming apparatus which sequentially arranges a charging device, a developing device, a transfer device, and a charge eliminating device around a single-layer-type electrophotographic photoconductor, the charging device charges a surface of the single-layer-type electrophotographic photoconductor with a positive polarity, a precharging device having a conductive member is arranged on an upstream side of the charge eliminating device, the conductive member is brought into contact with the electrophotographic photoconductor, and a current density Ib (μA/m2) of the injected current into the photoconductor from the conductive member is set to a value of 700 (μA/m2) or more.

摘要翻译： 即使使用带正电的单层型电子照相感光体作为光电导体，也能够利用优化条件的预充电装置擦除转印存储器，能够表现出优异的电荷消除效果的图像形成装置。 在单层型电子照相光电导体周围依次配置充电装置，显影装置，转印装置和电荷消除装置的图像形成装置中，充电装置对单层型电子照相感光体 具有正极性，具有导电部件的预充电装置设置在电荷消除装置的上游侧，导电部件与电子照相感光体接触，并且注入电流的电流密度Ib（μA/ m 2） 从导电部件入射到感光体中的值设定为700（μmA/ m 2）以上。

公开(公告)号：US06489071B2

公开(公告)日：2002-12-03

申请号：US09910916

申请日：2001-07-24

申请人： Eiichi Miyamoto ,  Yoshio Inagaki ,  Hideaki Fukunaga

发明人： Eiichi Miyamoto ,  Yoshio Inagaki ,  Hideaki Fukunaga

IPC分类号： G03G5047

CPC分类号： G03G5/0627 ,  G03G5/047 ,  G03G5/0607 ,  G03G5/0614 ,  G03G5/0616 ,  G03G5/14704

摘要： The invention relates to an electrophotosensitive material comprising an organic photosensitive layer and an inorganic surface protective layer, wherein at least an outermost part of the organic photosensitive layer contains a diphenylamine compound represented by a formula (1): wherein ‘A’ denotes a groups combined with two phenyl groups in the formula in a manner to jointly form a &pgr;-electron conjugated system. The electrophotosensitive material features more excellent durability because the compound functions as a binder for combining the organic photosensitive layer with the inorganic surface protective layer so that the surface protective layer is less prone to suffer cracks or delamination.

摘要翻译： 本发明涉及包含有机感光层和无机表面保护层的电光敏材料，其中有机感光层的至少最外部分含有由式（1）表示的二苯胺化合物：其中“A”表示组合 在该式中具有两个苯基，以共同形成π-电子共轭系统。电光敏材料具有更优异的耐久性，因为该化合物起组合有机感光层与无机表面保护层的粘合剂的作用， 保护层不容易发生裂纹或分层。

公开(公告)号：US6153344A

公开(公告)日：2000-11-28

申请号：US556942

申请日：2000-04-21

申请人： Eiichi Miyamoto ,  Susumu Hiroshima

发明人： Eiichi Miyamoto ,  Susumu Hiroshima

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

CPC分类号： G03G5/06

摘要： The present invention relates to a positive charging single-layer type electrophotosensitive material comprising a conductive substrate and a photosensitive layer provided on the conductive substrate, said photosensitive layer comprising an electron charge generating material, a hole transferring material, an electron transferring material and a binder resin, wherein a mobility of the hole transferring material at an electric field strength of 5.times.10.sup.5 V/cm is not less than 1.times.10.sup.-5 cm.sup.2 /V/sec and the electron transferring material has a mobility of not less than 1/20000 and not more than 1/10 relative to that of the hole transferring material. Said positive charging single-layer type photosensitive material has a sufficient sensitivity even when used in a high-speed image forming apparatus capable of taking 50 or more copies of a A4-size original.

摘要翻译： 本发明涉及一种正电荷单层型电光敏材料，其包括导电衬底和设置在导电衬底上的感光层，所述感光层包括电子发生材料，空穴转移材料，电子转移材料和粘合剂 树脂，其中空穴转移材料在5×10 5 V / cm的电场强度下的迁移率不小于1×10 -5 cm 2 / V / sec，并且电子转移材料具有不小于+ E的迁移率， 20000 + EE，不超过+ E，相对于空穴转移材料为1/10 + EE。 所述正充电单层型感光材料即使在能够获得A4尺寸原稿的50张以上的高速图像形成装置中也具有足够的灵敏度。

公开(公告)号：US5826153A

公开(公告)日：1998-10-20

申请号：US962773

申请日：1997-11-03

申请人： Hiroyuki Hazama ,  Eiichi Miyamoto ,  Hideo Nakamori ,  Takashi Terada ,  Masayuki Ishii ,  Takahiko Murata

发明人： Hiroyuki Hazama ,  Eiichi Miyamoto ,  Hideo Nakamori ,  Takashi Terada ,  Masayuki Ishii ,  Takahiko Murata

IPC分类号： G03G21/10 ,  G03G21/00 ,  A47L13/40

CPC分类号： G03G21/0035

摘要： An image-forming machine including a photosensitive drum which is rotatably disposed and successively passes through a charging zone, a developing zone and a transfer zone; a charger for charging the peripheral surface of the photosensitive drum into a predetermined polarity; a developing device for developing an electrostatic latent image formed on the peripheral surface of the photosensitive drum into a toner image; a transfer means for transferring the toner image formed on the peripheral surface of the photosensitive drum onto a transfer paper; and a foreign matter-recovering means which is disposed between the transfer zone and the charging zone and comes into contact with the peripheral surface of the photosensitive drum, and removes foreign matter adhered onto the peripheral surface of the photosensitive drum, the foreign matter-recovering means having a foreign matter-recovering brush brought into contact with the peripheral surface of the photosensitive drum, an elastic holding member made of an elastic material mounting said foreign matter-recovering brush, and a brush-support member for supporting said elastic holding member, and the foreign matter-recovering brush being press-contacted to the peripheral surface of the photosensitive drum by the compressive elastic force of the elastic holding member.

摘要翻译： 一种图像形成机，包括可旋转地设置并依次通过充电区，显影区和转印区的感光鼓; 用于将感光鼓的外围表面充电成预定极性的充电器; 用于将形成在感光鼓的周面上的静电潜像显影成调色剂图像的显影装置; 用于将形成在感光鼓的周面上的调色剂图像转印到转印纸上的转印装置; 以及异物回收装置，其设置在转印区域和充电区域之间并与感光鼓的周面接触，并且去除附着在感光鼓的外周表面上的异物，异物回收 具有与感光鼓的周面接触的异物回收刷的装置，由安装所述异物回收刷的弹性材料制成的弹性保持构件和用于支撑所述弹性保持构件的刷支撑构件， 并且异物回收刷通过弹性保持构件的压缩弹性力被压接到感光鼓的周面。

公开(公告)号：US5424157A

公开(公告)日：1995-06-13

申请号：US158783

申请日：1993-12-01

申请人： Eiichi Miyamoto ,  Yasufumi Mizuta

发明人： Eiichi Miyamoto ,  Yasufumi Mizuta

IPC分类号： G03G5/06

CPC分类号： G03G5/0683 ,  G03G5/0679 ,  G03G5/0681

摘要： An electrophotosensitive material containing, as a charge-generating agent, a compound represented by the following general formula (1), ##STR1## wherein Cp is an azo coupling component, Y is a divalent organic group containing at least one aromatic ring or heterocyclic ring, R1 and R8 are alkyl groups or halogen atoms, respectively, and R2 and R4 are alkyl groups, halogen atoms or hydrogen atoms, respectively. The charge-generating agent used here remains chemically stable and exhibits excellent recurring property and charge-forming efficiency.

摘要翻译： 含有作为电荷产生剂的由以下通式（1）表示的化合物的光敏材料：其中Cp是偶氮偶合组分，Y是含有至少一个芳族环或杂环的二价有机基团 R 1和R 8分别是烷基或卤原子，R 2和R 4分别是烷基，卤素原子或氢原子。 这里使用的电荷产生剂保持化学稳定，显示出优异的重复性和电荷形成效率。

公开(公告)号：US5336576A

公开(公告)日：1994-08-09

申请号：US980632

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： C09B35/037 ,  C09B56/00 ,  G03G5/06

CPC分类号： C09B56/00 ,  C09B35/037 ,  G03G5/0679 ,  G03G5/0683

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 amine group, a cyano group, a nitro group or a sulfoxide group; and A indicates a coupler residue having an acceptor property.

摘要翻译： 由以下通式IA表示的偶氮化合物和包含含有偶氮化合物的感光层的电子照相感光构件：其中R1和R2彼此相同或不同，表示氢原子，烷基 基团，烯基，羟基，烷氧基，羧基，烷氧基羰基，酰基，芳基，卤素基或氰基; R 14表示氢原子，卤素基团，烷基，烷氧基，芳基，胺基，氰基，硝基或亚砜基; A表示具有受体性质的成色剂残基。

公开(公告)号：US5288576A

公开(公告)日：1994-02-22

申请号：US980641

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： C09B35/037 ,  G03G5/06 ,  G03G5/047

CPC分类号： G03G5/0679 ,  C09B35/037 ,  G03G5/0683

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.

摘要翻译： 由以下通式IA表示的偶氮化合物和包含含有偶氮化合物的感光层的电子照相感光构件：（*化学结构*）（IA）其中R1和R2彼此相同或不同，表示氢原子 烷基，烯基，羟基，烷氧基，羧基，烷氧基羰基，酰基，芳基，卤素基或氰基; R 14表示氢原子，卤素基团，烷基，烷氧基，芳基，氨基，氰基，硝基或亚砜基; A表示具有受体性质的成色剂残基。

公开(公告)号：US5223364A

公开(公告)日：1993-06-29

申请号：US724664

申请日：1991-07-02

申请人： Tatsuo Maeda ,  Eiichi Miyamoto ,  Nariaki Muto

发明人： Tatsuo Maeda ,  Eiichi Miyamoto ,  Nariaki Muto

IPC分类号： G03G5/06

CPC分类号： G03G5/0657

摘要： The electrophotographic photoconductor of the present invention includes a conductive substrate and a photosensitive layer containing perylene pigment as a charge generating material formed on the conductive substrate. The X-ray diffraction peak of the perylene pigment exhibits its peak when the value of 2.theta. is 14.degree.(.+-.0.3.degree.), and the half-width of the peak when the value of 2.theta. is 14.degree. (.+-.0.3.degree.) is 0.5 or more. This electrophotographic photoconductor has excellent qualities of low residual potential and stabilized quality.