公开(公告)号：US6108502A

公开(公告)日：2000-08-22

申请号：US301579

申请日：1999-04-29

Applicant: Masaya Kawada ,  Takaaki Kaya ,  Tetsuya Karaki

Inventor： Masaya Kawada ,  Takaaki Kaya ,  Tetsuya Karaki

IPC: G03G21/10 ,  G03G5/00 ,  G03G5/04 ,  G03G5/08 ,  G03G5/082 ,  G03G15/00

CPC classification number: G03G5/08285 ,  G03G5/04 ,  G03G5/005

Abstract: A photosensitive member to be used for an image-forming apparatus can effectively suppress its wettability of the surface relative to foreign objects adhering to it and reduce the load and the mechanism necessary for cleaning the surface so as to prolong the service life of the photosensitive member and make the apparatus adapted to down-sizing. For this purpose, the wettability (W: work of adhesion) of the surface of the photosensitive member relative to toner is confined to be between 60 and 110 mN/m.

Abstract translation: 用于图像形成装置的感光构件可以有效地抑制表面相对于附着于其上的异物的润湿性，并且减小了清洁表面所需的负载和机构，从而延长感光构件的使用寿命 并使设备适应于缩小尺寸。 为此，感光元件表面相对于调色剂的润湿性（W：粘合力）被限制在60和110mN / m之间。

公开(公告)号：US06240269B1

公开(公告)日：2001-05-29

申请号：US09301582

申请日：1999-04-29

Applicant: Takaaki Kaya ,  Masaya Kawada ,  Tetsuya Karaki ,  Toshiyuki Ehara ,  Yuji Nakayama

Inventor： Takaaki Kaya ,  Masaya Kawada ,  Tetsuya Karaki ,  Toshiyuki Ehara ,  Yuji Nakayama

IPC: G03G1500

CPC classification number: G03G13/04

Abstract: An electrophotographic process is implemented with improved ghost memory and with high chargeability even under circumstances of increased process speed or compactified structure and the electrophotographic process forms an image on a photosensitive member having a photosensitive layer through a series of steps including steps of charge elimination, charging, latent image exposure, and development to form a toner image, wherein light used in the latent image exposure step is light of a wavelength within such a range that a value of (optical memory before charging)/(sensitivity) of the photosensitive layer is not more than 1.5 times a minimum value. The optical memory before charging means lowering in chargeability due to light irradiation before charging.

Abstract translation: 即使在增加处理速度或压实结构的情况下，电子照相工艺也具有改进的重影存储器和高充电性，并且电子照相工艺通过一系列步骤在具有感光层的感光构件上形成图像，包括电荷消除，充电 ，潜像曝光和显影以形成调色剂图像，其中在潜像曝光步骤中使用的光是在感光层的（光学存储器在充电之前）/（感光度）的值为 不超过最小值的1.5倍。 充电前的光学存储器意味着在充电之前由于光照射导致的充电性降低。

公开(公告)号：US06171742B2

公开(公告)日：2001-01-09

申请号：US09301128

申请日：1999-04-28

Applicant: Masaya Kawada ,  Takaaki Kaya ,  Tetsuya Karaki

Inventor： Masaya Kawada ,  Takaaki Kaya ,  Tetsuya Karaki

IPC: G03G514

CPC classification number: G03G5/14726 ,  G03G5/08285 ,  G03G5/14704

Abstract: A photosensitive member to be used for an image-forming apparatus effectively suppresses the effect of wetting the foreign matters adhered to the surface thereof, reduces the load of the cleaning unit and prolong the service life of the photosensitive member so that the image-forming apparatus may be down-sized. In the photosensitive member, the surface free energy (&ggr;) on the uppermost surface of the photosensitive member is made between 35 and 65 mN/m and the variation of the surface free energy &Dgr;&ggr; is made less than 25 mN/m during long operation.

Abstract translation: 用于图像形成装置的感光构件有效地抑制了附着在其表面上的异物的润湿的效果，减小了清洁单元的负载并延长了感光构件的使用寿命，使得图像形成装置 可能会下降。 在感光构件中，感光构件的最上表面上的表面自由能（γ）在35和65mN / m之间，并且在长时间操作期间使表面自由能DELTAgamma的变化小于25mN / m。

公开(公告)号：US5983043A

公开(公告)日：1999-11-09

申请号：US218628

申请日：1998-12-22

Applicant: Hironori Ohwaki ,  Koji Yamazaki ,  Toshiyuki Ehara ,  Masaya Kawada ,  Takaaki Kaya ,  Tetsuya Karaki

Inventor： Hironori Ohwaki ,  Koji Yamazaki ,  Toshiyuki Ehara ,  Masaya Kawada ,  Takaaki Kaya ,  Tetsuya Karaki

IPC: G01R29/12 ,  G03G15/00 ,  G03G21/00

CPC classification number: G03G15/5037 ,  G01R29/12

Abstract: In a surface potential measuring apparatus for measuring a potential configuration by moving a photosensitive body of an image forming apparatus of electrophotographic type and at least one potential sensor relative to each other and by generating dielectric current in the potential sensor due to change in potential on a surface of the photosensitive body and by analyzing the dielectric current, a width of a detecting portion of the potential sensor is smaller than a width of the change in potential to be measured, and a sectional shape of the detecting portion in a plane perpendicular to the surface of the photosensitive body and parallel to the relative movement direction does not include any edge.

Abstract translation: 在表面电位测量装置中，用于通过使电子照相类型的图像形成装置的感光体和至少一个电位传感器相对于彼此移动并且通过在电位传感器中产生电介质电流来测量电位结构， 感光体的表面，并且通过分析电介质电流，电位传感器的检测部分的宽度小于待测电位变化的宽度，并且检测部分在垂直于感光体的平面中的截面形状 感光体的表面并且平行于相对运动方向不包括任何边缘。

公开(公告)号：US06605405B2

公开(公告)日：2003-08-12

申请号：US09911611

申请日：2001-07-25

Applicant: Hironori Owaki ,  Toshiyuki Ehara ,  Yuji Nakayama ,  Masaya Kawada ,  Takaaki Kaya ,  Tetsuya Karaki

Inventor： Hironori Owaki ,  Toshiyuki Ehara ,  Yuji Nakayama ,  Masaya Kawada ,  Takaaki Kaya ,  Tetsuya Karaki

IPC: G03G1302

CPC classification number: G03G13/04 ,  G03G5/08214 ,  G03G21/08

Abstract: Provided are an electrophotographic method and an electrophotographic apparatus that can reduce ghost memory latent in an a-Si photosensitive member, relieve potential unevenness, and provide image copies with high quality. In an electrophotographic process of forming a toner image at least through decharging of a photosensitive member as a recording element, charging, exposing, developing, and transferring, at least a light-receiving layer of the photosensitive member is comprised of an amorphous material; a latent image is formed by the exposing with a light; the light has such a peak wavelength in an emission spectrum as to make minimum a value of optical memory at a unit contrast potential; and the decharging is implemented by use of a light having a full width at half maximum of a peak in an emission spectrum of not more than 50 nm.

Abstract translation: 提供了一种电子照相方法和电子照相设备，其可以减少a-Si感光构件中潜在的重影记忆，减轻潜在的不均匀性，并提供高质量的图像拷贝。 在至少通过对作为记录元件的感光构件进行充电的充电，曝光，显影和转印的至少形成调色剂图像的电子照相方法中，至少感光构件的光接收层由非晶材料构成; 通过用光曝光形成潜像; 光在发射光谱中具有这样的峰值波长，以使单位对比度电位下的光学存储器的值最小化; 通过使用不大于50nm的发射光谱中的峰的半峰全宽的光来进行放电。

公开(公告)号：US06226479B1

公开(公告)日：2001-05-01

申请号：US09391047

申请日：1999-09-16

Applicant: Tetsuya Karaki ,  Yuji Nakayama ,  Masaya Kawada ,  Takaaki Kaya

Inventor： Tetsuya Karaki ,  Yuji Nakayama ,  Masaya Kawada ,  Takaaki Kaya

IPC: G03G1500

CPC classification number: G03G5/08221 ,  G03G5/02 ,  G03G5/10 ,  G03G5/14

Abstract: An electrophotographic amorphous silicon photosensitive member is used for an electrophotographic apparatus that forms images by the electrophotographic method, and an image forming apparatus uses this photosensitive member, which includes a drum-shaped cylindrical conductive substrate, and a photosensitive layer that contains amorphous silicon, thus structuring an electrophotographic photosensitive drum. Then, the outer diameter of this photosensitive drum is configured to be gradually smaller from the vicinity of the central portion thereof in the generatrix direction to both ends in the longitudinal direction, hence making it possible to enhance the cleaning effect on residual toner.

Abstract translation: 电子照相非晶硅感光构件用于通过电子照相方法形成图像的电子照相设备，并且图像形成装置使用该感光构件，其包括鼓形圆柱形导电衬底和包含非晶硅的感光层，因此 构造电子照相感光鼓。 然后，该感光鼓的外径被构造成从其母线方向的中心部分的附近到长度方向的两端逐渐变小，因此可以提高对残留调色剂的清洁效果。

公开(公告)号：US06233417B1

公开(公告)日：2001-05-15

申请号：US09349078

申请日：1999-07-08

Applicant: Yuji Nakayama ,  Koji Yamazaki ,  Masaya Kawada ,  Takaaki Kaya ,  Hironori Owaki

Inventor： Yuji Nakayama ,  Koji Yamazaki ,  Masaya Kawada ,  Takaaki Kaya ,  Hironori Owaki

IPC: G03G1500

CPC classification number: G03G5/08221

Abstract: An image forming apparatus which largely improves the reliability of electrophotographic apparatuses and can accommodate their extremely large productivity comprises an image forming part which forms toner images on an image carrying member, an image transfer part which transfers the toner images on the image carrying member onto a transfer material, and a cleaning part which removes post-transfer residual toner left on the image carrying member after the images are transferred onto the transfer material by the image transfer part, wherein the image carrying member is an amorphous silicon photosensitive member and an initial average gradient &Dgr;a of the photosensitive member is 0.0001 to 0.005.

Abstract translation: 大大提高电子照相设备的可靠性并且可以适应其极大生产率的图像形成装置包括在图像承载部件上形成调色剂图像的图像形成部件，将图像承载部件上的调色剂图像转印到图像传送部件上的图像转印部件 转印材料和清洁部件，其在通过图像转印部件将图像转印到转印材料上之后，去除留在图像承载部件上的转印后残留调色剂，其中图像承载部件是非晶硅感光部件，初始平均值 感光构件的梯度DELTAa为0.0001〜0.005。

公开(公告)号：US06534228B2

公开(公告)日：2003-03-18

申请号：US09859422

申请日：2001-05-18

Applicant: Masaya Kawada ,  Toshiyuki Ehara ,  Tetsuya Karaki ,  Hironori Ohwaki ,  Kunimasa Kawamura

Inventor： Masaya Kawada ,  Toshiyuki Ehara ,  Tetsuya Karaki ,  Hironori Ohwaki ,  Kunimasa Kawamura

IPC: G03G5147

CPC classification number: G03G5/102 ,  G03G5/043 ,  G03G5/0503 ,  G03G5/0507 ,  G03G5/0525 ,  G03G5/08214 ,  G03G5/10 ,  G03G5/147

Abstract: To provide a Si photosensitive member and an image forming apparatus which prevents toner adherence at the time of cleaning and forms an excellent image, an electrophotographic photosensitive member comprising a photoconductive layer including amorphous Si and a surface protective layer which are formed on an electroconductive substrate has a difference in the height of concave and convex corresponding to 90% and 50% of a cumulative frequency of the height of concave and convex with respect to the most deepest point of surface roughness concave and convex within a range of 10 &mgr;m×10 &mgr;m of the photosensitive member as a standard which is set within a range of 3 nm to 200 nm.

公开(公告)号：US5732313A

公开(公告)日：1998-03-24

申请号：US681954

申请日：1996-07-30

Applicant: Masaya Kawada ,  Toshiyuki Ehara ,  Tetsuya Karaki

Inventor： Masaya Kawada ,  Toshiyuki Ehara ,  Tetsuya Karaki

IPC: G03G15/02

CPC classification number: G03G15/0241 ,  G03G2215/022 ,  Y10S430/102

Abstract: The present invention provides a charge apparatus comprising a charge member to which voltage is applied for charging a member to be charged, the charge member having a bearing member for bearing a magnetic particle layer contacted with the member to be charged. The bearing member includes therein a plurality of magnetic poles disposed in a circumferential direction thereof, and the magnetic poles are arranged in a spiral fashion.

Abstract translation: 本发明提供了一种充电装置，其包括充电构件，向所述充电构件施加电压以对要充电的构件进行充电，所述充电构件具有用于承载与待充电构件接触的磁性颗粒层的支承构件。 轴承构件包括设置在其圆周方向上的多个磁极，并且磁极以螺旋方式布置。

公开(公告)号：US07060406B2

公开(公告)日：2006-06-13

申请号：US10427901

申请日：2003-05-02

Applicant: Kunimasa Kawamura ,  Shigenori Ueda ,  Toshiyuki Ehara ,  Junichiro Hashizume ,  Ryuji Okamura ,  Masaya Kawada ,  Tetsuya Karaki ,  Hironori Ohwaki

Inventor： Kunimasa Kawamura ,  Shigenori Ueda ,  Toshiyuki Ehara ,  Junichiro Hashizume ,  Ryuji Okamura ,  Masaya Kawada ,  Tetsuya Karaki ,  Hironori Ohwaki

IPC: G03G5/82 ,  G03G13/08

CPC classification number: G03G5/10 ,  G03G5/08221 ,  G03G5/14 ,  G03G5/147 ,  G03G5/14704

Abstract: A light-receiving member comprising a conductive substrate, and formed superposingly thereon a photosensitive layer and a surface protective layer in order. The light-receiving member has a surface roughness Ra of from 15 nm to 100 nm. Also disclosed is an image-forming apparatus having such a light-receiving member, and an image-forming method of rendering visible an electrostatic pattern formed on the light-receiving member. The light-receiving member promises stable formation of images over a long period of time.