公开(公告)号：US5750308A

公开(公告)日：1998-05-12

申请号：US754624

申请日：1996-11-21

申请人： Mitsuji Tsujita ,  Nariaki Tanaka ,  Takashi Terada ,  Takuji Terada ,  Ichiro Yamazato ,  Eiichi Miyamoto

发明人： Mitsuji Tsujita ,  Nariaki Tanaka ,  Takashi Terada ,  Takuji Terada ,  Ichiro Yamazato ,  Eiichi Miyamoto

IPC分类号： G03G13/22 ,  G03G15/06 ,  G03G13/06

CPC分类号： G03G15/065 ,  G03G13/22

摘要： An electrophotographic method in which an electrostatic latent image on a single-layer organic photosensitive material is developed while applying a developing bias voltage of the same polarity as the polarity of the charge of the photosensitive material. The developing bias voltage is set to be higher than a potential that corresponds to a point where a curve approximating the zone of a large amount of exposure to light and a curve approximating the zone of a small amount of exposure to light in a light decay characteristics curve intersect each other.

摘要翻译： 一种电子照相方法，其中在施加与感光材料的电荷的极性相同极性的显影偏压的同时显影单层有机感光材料上的静电潜像。 显影偏压被设定为高于对应于近似于大量曝光区域的曲线和接近光衰减特性中少量曝光区域的曲线的点的电位 曲线相交。

公开(公告)号：US5530525A

公开(公告)日：1996-06-25

申请号：US353109

申请日：1994-12-09

申请人： Mitsuji Tsujita ,  Masahiko Maeda ,  Kazuhiro Mizude ,  Tomohiro Tsutano ,  Masao Uyama ,  Nariaki Tanaka ,  Takashi Terada ,  Takuji Terada

发明人： Mitsuji Tsujita ,  Masahiko Maeda ,  Kazuhiro Mizude ,  Tomohiro Tsutano ,  Masao Uyama ,  Nariaki Tanaka ,  Takashi Terada ,  Takuji Terada

IPC分类号： G03G5/06 ,  G03G21/08 ,  G03G15/02

CPC分类号： G03G21/08 ,  G03G5/0681

摘要： An image forming apparatus includes a charge removing device for removing the residual charge on a photosensitive film. The light emitted from an optical source of the charge removing device is selected from the range between the wavelengths which correspond to half of the maximum absorbance in a light absorbance characteristic of the photosensitive film. Since carrier generation does not occur by the light emitted by the charge removing device, the charging ability and the charge retaining ability of the photosensitive film are improved, and the image quality is significantly improved.

摘要翻译： 图像形成装置包括用于去除感光膜上的残留电荷的电荷去除装置。 从电荷去除装置的光源发射的光从在感光膜的吸光度特性中与最大吸光度的一半相对应的波长之间的范围内选择。 由于由电荷去除装置发出的光不会发生载流子的产生，所以提高了感光膜的充电能力和电荷保持能力，显着提高了图像质量。

公开(公告)号：US5128229A

公开(公告)日：1992-07-07

申请号：US585669

申请日：1990-09-20

申请人： Masato Katsukawa ,  Keizo Kimoto ,  Mitsuji Tsujita ,  Satoru Miura

发明人： Masato Katsukawa ,  Keizo Kimoto ,  Mitsuji Tsujita ,  Satoru Miura

IPC分类号： G03G5/05

CPC分类号： G03G5/0564

摘要： The electrophotosensitive material in accordance with the present invention containing a layer which contains polycarbonate as a binding resin and of which glass transition temperature is not lower than 62.degree. C. This layer is excellent in adhesion to the foundation. This layer may be a photosensitive layer containing a m-phenylenediamine compound as a charge transferring material, or a photosensitive layer containing a m-phenylenediamine compound and a perylene compound as a charge generating material. The present invention also provides a photosensitive layer of which the amount of residual tetrahydrofuran is adjusted to a predetermined value or less, thereby to prevent the photosensitive layer from being decreased in sensitivity due to ultraviolet rays or visible ray.

公开(公告)号：US07457573B2

公开(公告)日：2008-11-25

申请号：US11164590

申请日：2005-11-30

申请人： Mitsuji Tsujita

发明人： Mitsuji Tsujita

IPC分类号： G03G15/16

CPC分类号： G03G15/6532

摘要： A plurality of separation needles are arranged downstream from a transfer roller in the sheet transport direction along a direction which is orthogonal to the sheet transport direction, and when a separation voltage is applied to the separation needles, an electrical discharge occurs between the photosensitive drum and the separation needles, and a sheet which has been charged by the transfer roller has static charge eliminated and is separated from the photosensitive drum. Furthermore, a transport unit established downstream from the separation needles in the sheet transport direction has a plurality of transport plates which guide the transport of the sheet, and a grounding plate which is located between these transport plates, and the grounding plate is connected to the grounding unit of the device body such that the grounding plate can be seen without interference from the tip end of the separation needles.

摘要翻译： 多个分离针沿着纸张传送方向上的转印辊的下游布置在与纸张输送方向正交的方向上，并且当分离针被施加到分离针时，在感光鼓和 分离针和由转印辊充电的片材具有消除的静电，并且与感光鼓分离。 此外，在纸张输送方向上从分离针的下游设置的输送单元具有引导片材的输送的多个输送板和位于这些输送板之间的接地板，并且接地板与 接地单元，使得可以看到接地板而不受分离针的尖端的干扰。

公开(公告)号：US07336918B2

公开(公告)日：2008-02-26

申请号：US11258206

申请日：2005-10-26

申请人： Mitsuji Tsujita

发明人： Mitsuji Tsujita

IPC分类号： G03G15/16

CPC分类号： G03G15/6535

摘要： A separation device 16, which is located downstream from a transfer roller in the sheet transport direction, applies a separation voltage to a plurality of separation needles 17 disposed in an alignment orthogonal to the direction of transport of the sheet, so as to produce a discharge between a photosensitive drum 2 and the separation needles 17 and to remove the charge on the sheet that was charged by a transfer roller, so as to separate the sheet from the photosensitive drum 2, the separation device 16 having an upstream wall 27 and a downstream wall 28, and a ground electrode 33 being disposed on the back side of the downstream wall 28, which is the side not facing the separation needles 17, and protruding towards the photosensitive drum 2, beyond the line that connects the tips of the separation needles 17 and the end of the downstream wall 28.

摘要翻译： 分离装置16位于片材输送方向上位于转印辊下游的位置，对分离针17施加分离电压，该多个分离针17以与片材的输送方向正交的方式配置，从而产生放电 在感光鼓2和分离针17之间，并且去除由转印辊充电的片材上的电荷，以将片材与感光鼓2分离，具有上游壁27和下游的分离装置16 壁28和接地电极33设置在下游壁28的背面，即作为不面向分离针17的一侧并且朝向感光鼓2突出的一侧，超过连接分离针的尖端的线 17和下游壁28的端部。

公开(公告)号：US5565963A

公开(公告)日：1996-10-15

申请号：US423551

申请日：1995-04-17

申请人： Mitsuji Tsujita ,  Nariaki Tanaka ,  Yuji Tanaka ,  Takashi Terada ,  Takuji Terada

发明人： Mitsuji Tsujita ,  Nariaki Tanaka ,  Yuji Tanaka ,  Takashi Terada ,  Takuji Terada

IPC分类号： G03G15/00 ,  G03G15/02 ,  G03G21/00 ,  G03G21/08

CPC分类号： G03G15/5037 ,  G03G15/0266

摘要： An image forming apparatus includes a rotatable photosensitive member including a conductive base and a photosensitive layer located on a surface of the base; a charging device located in the vicinity of the photosensitive member for charging the photosensitive layer; a charge removing device located upstream with respect to the charging device in a rotation direction of the photosensitive member for radiating light toward the photosensitive layer prior to charging performed by the charging device to uniformize a surface potential of the photosensitive layer; a light radiation device for radiating light to a charging area of the photosensitive layer in the state of being charged by the charging device and for adjusting the amount of the light to be radiated; an exposing device for radiating light corresponding to an image toward the photosensitive layer in the state of being charged; a developing device located downstream with respect to the exposing device in the rotation direction of the photosensitive member; a change detection device for detecting a change in at least one of a charging potential of the photosensitive layer and a sensitivity of the photosensitive layer; and a compensation device for compensating for the change by adjusting the amount of the light radiated toward the charging area by the light radiation device based on results obtained by the change detection device.

摘要翻译： 图像形成装置包括可旋转感光构件，其包括导电基底和位于基底表面上的感光层; 位于感光构件附近的用于对感光层充电的充电装置; 电荷去除装置，其在所述感光构件的旋转方向上位于所述充电装置的上游，用于在由所述充电装置进行充电之前向所述感光层照射光以使所述感光层的表面电位均匀化; 光放射装置，用于在由充电装置充电的状态下将光照射到感光层的充电区域并用于调节要辐射的光量; 曝光装置，用于在被充电的状态下将对应于图像的光照射到感光层; 显影装置，其在感光构件的旋转方向上相对于曝光装置位于下游; 用于检测感光层的充电电位和感光层的灵敏度中的至少一个的变化的变化检测装置; 以及补偿装置，用于通过基于由变化检测装置获得的结果调节由光辐射装置朝向充电区域辐射的光量来补偿该变化。

公开(公告)号：US5530524A

公开(公告)日：1996-06-25

申请号：US207166

申请日：1994-03-08

申请人： Mitsuji Tsujita ,  Keizo Kimoto ,  Ichiro Yamazato ,  Nariaki Tanaka ,  Tomoki Tanaka

发明人： Mitsuji Tsujita ,  Keizo Kimoto ,  Ichiro Yamazato ,  Nariaki Tanaka ,  Tomoki Tanaka

IPC分类号： G03G5/06 ,  G03G15/00 ,  G03G15/30 ,  G03G15/32 ,  G03G21/08 ,  G03G21/00

CPC分类号： G03G15/751 ,  G03G15/04045 ,  G03G15/307 ,  G03G15/326 ,  G03G21/08 ,  G03G5/0681

摘要： A compact electrophotographic apparatus is attained by decreasing the diameter of the photosensitive drum so that a plurality of rotations of the drum are required to produce a single sheet image. Images of excellent quality, especially with respect to the lack of stepwise density decrease across the image due to multiple drum rotations per image, are achieved by providing for discharge of the photosensitive drum so that the residual potential on the drum is 10% or less of the charged surface potential after discharge on the first rotation of the drum and the increase in the residual potential is not more than 30% after discharge on the last rotation of a sheet making cycle.

摘要翻译： 通过减小感光鼓的直径来获得紧凑的电子照相设备，以便需要滚筒的多次旋转以产生单张图像。 通过提供感光鼓的放电使得感光鼓的残留电位为10％以下，尤其是对于由于每个图像的多个鼓旋转而导致的图像上逐步密度降低的图像， 滚筒的第一次旋转时的放电后的带电表面电位和剩余电位的增加在片材制作循环的最后旋转之后放电后不大于30％。

公开(公告)号：US20080095561A1

公开(公告)日：2008-04-24

申请号：US11964486

申请日：2007-12-26

申请人： Mitsuji TSUJITA

发明人： Mitsuji TSUJITA

IPC分类号： G03G15/14

CPC分类号： G03G15/6535

摘要： Separation means 16, which are located downstream from a transfer roller in the sheet transport direction, apply a separation voltage to a plurality of separation needles 17 disposed in an alignment orthogonal to the direction of transport of the sheet, so as to produce a discharge between a photosensitive drum 2 and the separation needles 17 and remove the charge on the sheet that was charged by a transfer roller, so as to separate the sheet from the photosensitive drum 2, the separation means 16 comprising an upstream wall 27 and a downstream wall 28, and a ground electrode 33 being disposed on the back side of the downstream wall 28, which is the side not facing the separation needles 17, and protruding towards the photosensitive drum 2, beyond the line that connects the tips of the separation needles 17 and the end of the downstream wall 28.

摘要翻译： 分离装置16位于片材输送方向上位于转印辊下游的分离装置16上，以与片材的输送方向正交的方式配置的多个分离针17施加分离电压， 感光鼓2和分离针17，并且移除由转印辊充电的片材上的电荷，以将片材与感光鼓2分离，分离装置16包括上游壁27和下游壁28 ，并且接地电极33设置在下游侧壁28的背面侧，该侧壁不是面向分离针17的一侧并且朝向感光鼓2突出，超过连接分离针17的前端的线和 下游墙28的端部。

公开(公告)号：US20070092310A1

公开(公告)日：2007-04-26

申请号：US11258206

申请日：2005-10-26

申请人： Mitsuji Tsujita

发明人： Mitsuji Tsujita

IPC分类号： G03G15/14

CPC分类号： G03G15/6535

摘要： Separation means 16, which are located downstream from a transfer roller in the sheet transport direction, apply a separation voltage to a plurality of separation needles 17 disposed in an alignment orthogonal to the direction of transport of the sheet, so as to produce a discharge between a photosensitive drum 2 and the separation needles 17 and remove the charge on the sheet that was charged by a transfer roller, so as to separate the sheet from the photosensitive drum 2, the separation means 16 comprising an upstream wall 27 and a downstream wall 28, and a ground electrode 33 being disposed on the back side of the downstream wall 28, which is the side not facing the separation needles 17, and protruding towards the photosensitive drum 2, beyond the line that connects the tips of the separation needles 17 and the end of the downstream wall 28.

摘要翻译： 分离装置16位于片材输送方向上位于转印辊下游的分离装置16上，以与片材的输送方向正交的方式配置的多个分离针17施加分离电压， 感光鼓2和分离针17，并且移除由转印辊充电的片材上的电荷，以将片材与感光鼓2分离，分离装置16包括上游壁27和下游壁28 ，并且接地电极33设置在下游侧壁28的背面侧，该侧壁不是面向分离针17的一侧并且朝向感光鼓2突出，超过连接分离针17的前端的线和 下游墙28的端部。

公开(公告)号：US20060198668A1

公开(公告)日：2006-09-07

申请号：US11164590

申请日：2005-11-30

申请人： Mitsuji Tsujita

发明人： Mitsuji Tsujita

IPC分类号： G03G15/14

CPC分类号： G03G15/6532

摘要： A plurality of separation needles are arranged downstream from a transfer roller in the sheet transport direction along a direction which is orthogonal to the sheet transport direction, and when a separation voltage is applied to the separation needles, an electrical discharge occurs between the photosensitive drum and the separation needles, and a sheet which has been charged by the transfer roller has static charge eliminated and is separated from the photosensitive drum. Furthermore, a transport unit established downstream from the separation needles in the sheet transport direction has a plurality of transport plates which guide the transport of the sheet, and a grounding plate which is located between these transport plates, and the grounding plate is connected to the grounding unit of the device body such that the grounding plate can be seen without interference from the tip end of the separation needles.

摘要翻译： 多个分离针沿着纸张传送方向上的转印辊的下游布置在与纸张输送方向正交的方向上，并且当分离针被施加到分离针时，在感光鼓和 分离针和已经由转印辊充电的片材具有消除的静电，并且与感光鼓分离。 此外，在纸张输送方向上从分离针的下游设置的输送单元具有引导片材的输送的多个输送板和位于这些输送板之间的接地板，并且接地板与 接地单元，使得可以看到接地板而不受分离针的尖端的干扰。