公开(公告)号：EP0809157B1

公开(公告)日：2004-03-24

申请号：EP97303463.0

申请日：1997-05-21

申请人： SHARP KABUSHIKI KAISHA

发明人： Yamada, Masanori

IPC分类号： G03G15/08

CPC分类号： G03G15/0812

公开(公告)号：EP1032193A1

公开(公告)日：2000-08-30

申请号：EP00103998.1

申请日：2000-02-25

申请人： SHARP KABUSHIKI KAISHA

发明人： Yamada, Masanori

IPC分类号： H04N1/409

CPC分类号： H04N1/4092

摘要： An object of the invention is to reduce the burden of a process for suppressing false contours. A boundary processing portion (48) in an image processing apparatus (21) detects a boundary between pixel regions in a processing-object image and symmetrically exchanges reflection densities of pixels in two exchange-object regions set on both sides of the boundary using the boundary as an axis of symmetry. The boundary processing portion (48) carries out the process only on a boundary between two adjoining pixel regions for which a reflection density difference is within a predetermined allowable range among all pixel regions in the processing-object image. A lower limit of reflection density difference within the allowable range is a minimum value among reflection density differences in two pixel regions which can be discriminated by human eyes and is, for example, 0.003 or 0.005.

摘要翻译： 本发明的一个目的是减少用于抑制假轮廓的过程的负担。 图像处理装置（21）中的边界处理部（48）检测处理对象图像中的像素区域之间的边界，并使用边界对称地交换设置在边界两侧的两个交换对象区域中的像素的反射浓度 作为对称轴。 边界处理部（48）仅在处理对象图像中的所有像素区域中的反射浓度差在规定的允许范围内的两个相邻的像素区域之间的边界上进行处理。 在允许范围内的反射浓度差的下限是能够被人眼识别的两个像素区域的反射浓度差的最小值，例如为0.003或0.005。

公开(公告)号：EP0809157A1

公开(公告)日：1997-11-26

申请号：EP97303463.0

申请日：1997-05-21

申请人： SHARP KABUSHIKI KAISHA

发明人： Yamada, Masanori

IPC分类号： G03G15/08

CPC分类号： G03G15/0812

摘要： A developer layer forming device includes a photoreceptor drum (1), a developing roller (26) arranged opposite to the photoreceptor drum (1) such that the developing roller (25) is in contact with or adjacent to the photoreceptor drum (1), and supporting a non-magnetic developer, and a blade (28) arranged opposite to the developing roller (25) and also arranged such that an edge of the blade (28) is pressed against and thus in contact with the developing roller (25) at a nip portion.

摘要翻译： 一种显影剂层形成装置包括感光鼓（1），相对地布置（1）进行测试做显影辊与感光鼓（25）的显影辊（26）与接触或邻近相片接收器磁鼓（1）， 并支撑非磁显影剂，和一个片（28）相对设置的显影辊（25），并因此布置搜索在叶片的边缘做（28）被压靠，从而在与显影辊接触（25） 在夹持部。

公开(公告)号：EP0921445B1

公开(公告)日：2004-09-15

申请号：EP98123182.2

申请日：1998-12-04

申请人： SHARP KABUSHIKI KAISHA

发明人： Yamada, Masanori ,  Yamanaka, Takayuki ,  Takaya, Toshihiko ,  Iwamatsu, Tadashi ,  Inoue, Atsushi ,  Azuma, Nobuyuki ,  Yasuda, Keiji ,  Matsuyama, Kazuhiro ,  Tatsumi, Hiroshi

IPC分类号： G03G15/08

CPC分类号： G03G15/0812

公开(公告)号：EP0962835B1

公开(公告)日：2004-05-19

申请号：EP99304310.8

申请日：1999-06-02

申请人： Sharp Kabushiki Kaisha

发明人： Yamada, Masanori ,  Toyoshima, Tetsurou ,  Iwamatsu, Tadashi ,  Azuma, Nobuyuki

IPC分类号： G03G15/08

CPC分类号： G03G15/0812

公开(公告)号：EP0962835A3

公开(公告)日：2001-02-07

申请号：EP99304310.8

申请日：1999-06-02

申请人： Sharp Kabushiki Kaisha

发明人： Yamada, Masanori ,  Toyoshima, Tetsurou ,  Iwamatsu, Tadashi ,  Azuma, Nobuyuki

IPC分类号： G03G15/08

CPC分类号： G03G15/0812

摘要： A developing device and a blade (30) of the developing device, includes a contact section which is in plane contact with a development roller (21), and an inclined section (30a) which extends from an end of the contact section so as to form a flare at an inflow section of a one-component developer between the blade and development roller. When a flare angle between the blade having the flare and a line tangent to the development roller is denoted by a tilt angle θ, the angle satisfies 30° ≤ θ ≤ 90°. Thus, if the flare angle at the inflow section of the one-component developer between the blade (30) and development roller (21) is optimized, even when the one-component developer deteriorates with time, for example, the flowability is changed with time, it is possible to provide a developing device and a blade of the developing device capable of forming a one-component developer layer with an extremely stable deposit of one-component developer. Moreover, it is possible to provide a blade which can increase the dimensional tolerance of the inclined section and can be produced easily at a low cost.

摘要翻译： 显影装置的显影装置和叶片包括与显影辊平面接触的接触部分，以及从接触部分的一端延伸以形成喇叭口的倾斜部分， 叶片和显影辊之间的单组分显影剂。 当具有闪光灯的叶片和与显影辊相切的直线之间的喇叭角由倾斜角度表示时; 30°≤＆amp; ≤90°。 因此，如果在叶片和显影辊之间的单组分显影剂的流入部分处的扩口角度被优化，即使当一个ccmponemt显影剂随时间劣化时，例如流动性随时间变化， 提供能够形成具有非常稳定的单组分显影剂沉积物的单组分显影剂层的显影装置和显影装置的刀片。 此外，可以提供能够提高倾斜部的尺寸公差的叶片，并且能够以低成本容易地制造。

公开(公告)号：EP0939349A3

公开(公告)日：2000-11-02

申请号：EP99103588.2

申请日：1999-02-24

申请人： Sharp Kabushiki Kaisha

发明人： Iwamatsu, Tadashi ,  Matsuyama, Kazuhiro ,  Takaya, Toshihiko ,  Inoue, Atsushi ,  Yamada, Masanori ,  Azuma, Nobuyuki ,  Yamanaka, Takayuki

IPC分类号： G03G15/08

CPC分类号： G03G15/0818

摘要： An object of the present invention is to prevent an electrical breakdown of a toner layer and an occurrence of overcurrent, thereby preventing quality of image from being degraded at the time of development, when development with one-component toner is conducted using a developing roller of low resistance. The resistance value Rd of a developing roller (41) which carries and conveys one-component toner (10) in a manner of coming into contact with a photoconductor (1) which bears an electrostatic latent image, is defined as Rd = ρd · (Dd1/S1), wherein S1 (cm 2 ) is an area in which the developing roller (41) comes into contact with the static image bearing member via a toner layer (45), Dd1 (cm) is a layer thickness of a semiconductive layer which composes the developing roller, and ρd (Ω · cm) is a volume resistivity thereof. The range of the resistance Rd is set as 10 4 5 and the resistance Rt (Ω) of the toner layer is set as Rt > 5 × 10 7 . By using the developing roller (41) of low resistance, excellent development is realized and an electrical breakdown and an overcurrent can be avoided by the resistance value of the toner layer.

摘要翻译： 本发明的目的是防止调色剂层的电击穿和过电流的发生，从而防止在显影时图像的质量劣化，当使用单组分调色剂进行显影时，使用显影辊 低电阻。 以与静电潜像的感光体（1）接触的方式携带并输送单组分调色剂（10）的显影辊（41）的电阻值Rd被定义为Rd = rho d。 （Dd1 / S1），其中S1（cm2）是显影辊（41）经由调色剂层（45）与静态图像承载部件接触的区域，Dd1（cm）是层厚度 构成显影辊的半导体层，其中，电极（OMEGA·cm）为体积电阻率。 电阻Rd的范围设定为10 ，调色剂层的电阻Rt（OMEGA）设定为Rt> 5×10 7。 通过使用低电阻的显影辊（41），实现了优异的显影，并且通过调色剂层的电阻值可以避免电击穿和过电流。

公开(公告)号：EP0921445A2

公开(公告)日：1999-06-09

申请号：EP98123182.2

申请日：1998-12-04

申请人： SHARP KABUSHIKI KAISHA

发明人： Yamada, Masanori ,  Yamanaka, Takayuki ,  Takaya, Toshihiko ,  Iwamatsu, Tadashi ,  Inoue, Atsushi ,  Azuma, Nobuyuki ,  Yasuda, Keiji ,  Matsuyama, Kazuhiro ,  Tatsumi, Hiroshi

IPC分类号： G03G15/08

CPC分类号： G03G15/0812

摘要： A blade (25) is pressed against a developing roller (21) for regulating the amount of toner which is deposited on a surface of the developing roller (21). The blade (25) is formed with a slant face (25a) at its tip end, to which the toner is transported along a direction of rotation of the developing roller (21). An angle of aperture θ at a toner inlet portion defined by the developing roller (21) and the slant face (25a) is set at 12.5° or more, the angle of aperture counting in an angle ψ of the slant face (25a), elastic deformation and radius (R) of the developing roller (21), and an angle α related to a nip width w on which the blade contacts with the developing roller (21). Such an angle of aperture θ provides a great allowance for a free length ℓ of the blade (25), thereby permitting the blade to maintain a constant toner mass for forming a uniform toner layer.

摘要翻译： 叶片（25）被压在显影辊（21）上，用于调节沉积在显影辊（21）的表面上的调色剂的量。 刀片（25）在其前端形成有倾斜面（25a），调色剂沿显影辊（21）的旋转方向传送到该倾斜面。 孔角度和角度; 在由显影辊（21）和倾斜面（25a）限定的调色剂入口部分设定为12.5°或更大时，斜面（25a）的角度psi的孔径计数角度，弹性变形和半径 R）和与刀片与显影辊（21）接触的辊隙宽度w相关的角度α。 这样的孔径角度; 为刀片（25）的自由长度l提供了很大的余量，从而允许刀片保持恒定的调色剂质量以形成均匀的调色剂层。

公开(公告)号：EP0684532B1

公开(公告)日：1999-02-17

申请号：EP95107917.7

申请日：1995-05-23

申请人： SHARP KABUSHIKI KAISHA

发明人： Kamimura, Taisuke ,  Inoue, Atsushi ,  Mitsuoka, Tetsunori ,  Yamada, Masanori ,  Ozaki, Masaaki

IPC分类号： G03G21/00

CPC分类号： G03G21/0005 ,  G03G21/0076 ,  G03G2221/001

公开(公告)号：EP0939349B1

公开(公告)日：2004-06-16

申请号：EP99103588.2

申请日：1999-02-24

申请人： Sharp Kabushiki Kaisha

发明人： Iwamatsu, Tadashi ,  Matsuyama, Kazuhiro ,  Takaya, Toshihiko ,  Inoue, Atsushi ,  Yamada, Masanori ,  Azuma, Nobuyuki ,  Yamanaka, Takayuki

IPC分类号： G03G15/08

CPC分类号： G03G15/0818