Developing device in electrophotographic apparatus including developing
poll configuration while stably carries developer
    5.
    发明授权
    Developing device in electrophotographic apparatus including developing poll configuration while stably carries developer 失效
    显影装置包括显影轮廓配置,同时稳定地携带显影剂

    公开(公告)号:US5545840A

    公开(公告)日:1996-08-13

    申请号:US489277

    申请日:1995-06-09

    IPC分类号: G03G15/08 G03G15/09

    摘要: A developing device in an electrophotographic apparatus, wherein a pole c.sub.1 which is a delivering magnetic pole of the second developing roll for delivering the developer to the first developing roll and a pole d.sub.1 which is a receiving magnetic pole of the second developing roll for receiving the developer from the first developing roll are set so as to be the same in polarity, whereas a pole a.sub.2 which is a receiving magnetic pole of the first developing roll for receiving the developer from the second developing roll and a pole g.sub.2 which is a delivering magnetic pole of the first developing roll for delivering the developer to the second developing roll are set to be equal in polarity, wherein each of an angle between the poles c.sub.1 and d.sub.1 and an angle between the poles a.sub.2 and g.sub.2 is set so as to be in a range of from 70.degree. to 120.degree., and wherein the magnetic flux density of each of a reaction pole induced between the poles c.sub.1 and d.sub.1 and a reaction pole induced between the poles a.sub.2 and g.sub.2 is set so as to be less than or equal to 0.015 tesla.

    摘要翻译: 一种电子照相设备中的显影装置,其中作为用于将显影剂输送到第一显影辊的第二显影辊的输送磁极的极c1和用于接收第二显影辊的第二显影辊的接收磁极的极d1 将来自第一显影辊的显影剂的极性设置为相同,而作为用于从第二显影辊接收显影剂的第一显影辊的接收磁极的极a2和作为输送磁性的极g2 将第一显影辊用于将显影剂输送到第二显影辊的极设置为极性相等,其中极点c1和d1之间的角度和极点a2和g2之间的角度被设置为处于 70〜120°的范围,极点c1和极之间引起的反应极的磁通密度与极a2和G2之间产生的反应极之间的磁通密度 被设定为小于或等于0.015特斯拉。

    Electrophotographic apparatus and paper detector thereof and paper
detecting method thereof
    6.
    发明授权
    Electrophotographic apparatus and paper detector thereof and paper detecting method thereof 失效
    电子照相设备和纸检测器及纸检测方法

    公开(公告)号:US5745817A

    公开(公告)日:1998-04-28

    申请号:US745053

    申请日:1996-11-07

    摘要: An electrophotographic apparatus for transferring a toner image formed on a photosensitive drum onto a sheet of paper and melt-fixing the toner image on the sheet of paper, having a paper detector at a predetermined position in a transporting path of the sheet of paper, the paper detector being composed of a light projector, a reflecting member for reflecting a primary light beam emitted from the light projector and a light receiver for sensing a secondary light beam reflected by the reflecting member, to prevent erroneous detections the light receiver is placed at a position relatively displaced with respect to a position where the light projector is located so that the primary light beam and the secondary light beam have tilting components to both a plane parallel to a transporting plane of the sheet of paper and a plane vertical to the transporting plane.

    摘要翻译: 一种电子照相设备,用于将形成在感光鼓上的调色剂图像转印到一张纸上并将该调色剂图像熔融固定在该纸张上,在该纸张的传送路径中的预定位置处具有纸张检测器, 纸张检测器由光投影仪,用于反射从投影仪发射的初级光束的反射部件和用于感测由反射部件反射的次级光束的光接收器,以防止光接收器被放置在 相对于光投射器所在的位置相对移位的位置使得主光束和次光束具有平行于纸张的传送平面的平面和垂直于传送平面的平面的倾斜分量 。

    Electrophotographic recording apparatus having a plurality of developing
devices which can be changed over
    8.
    发明授权
    Electrophotographic recording apparatus having a plurality of developing devices which can be changed over 失效
    具有可以切换的多个显影装置的电子照相记录装置

    公开(公告)号:US5307147A

    公开(公告)日:1994-04-26

    申请号:US945190

    申请日:1992-09-15

    IPC分类号: G03G15/01 G03G21/00

    CPC分类号: G03G15/0126

    摘要: An electrophotographic recording apparatus is provided having a reduced overall size. The space around a photosensitive member required for the developing unit to be located is minimized, more particularly, it i minimized in the lengthwise directional space. In the electrophotographic recording apparatus having a photosensitive member which moves at a predetermined speed; an exposure device for exposing the photosensitive member; a developing unit for developing an electrostatic latent image obtained by the exposure; and a transferring device for transferring a developed visible image to a recording paper sheet or the like, the developing unit is composed of developing devices, a plurality of supporting members for supporting the developing devices and an element for rotating the supporting members. The supporting members can be rotated while making a portion adjacent to a widthwise directional end of the photosensitive member to be a supporting point in a range from a state where the surface of the photosensitive member and the surface of a developing roll of each developing device run parallel to each other to a state where they are positioned substantially perpendicular to each other.

    摘要翻译: 提供具有减小的总体尺寸的电子照相记录装置。 显影单元所需的感​​光构件周围的空间被最小化,更特别地,其在纵向方向空间中被最小化。 在具有以预定速度移动的感光构件的电子照相记录装置中; 用于曝光感光构件的曝光装置; 用于显影通过曝光获得的静电潜像的显影单元; 以及用于将显影的可见图像转印到记录纸张等的转印装置,显影单元由显影装置,用于支撑显影装置的多个支撑构件和用于旋转支撑构件的元件组成。 支撑构件可以在使感光构件的宽度方向端部附近的部分成为支撑点的同时旋转,其范围从感光构件的表面和每个显影装置的显影辊的表面运行的状态 彼此平行地放置到彼此基本垂直的位置的状态。

    Magnetic brush with bristle height equal to developing gap
    10.
    发明授权
    Magnetic brush with bristle height equal to developing gap 失效
    刷毛高度等于发展间隙

    公开(公告)号:US5430528A

    公开(公告)日:1995-07-04

    申请号:US545576

    申请日:1990-06-29

    IPC分类号: G03G13/09 G03G15/01 G03G15/09

    摘要: In a developing apparatus in which a developer containing magnetic particles is carried on a developer carrier to form a magnetic brush and a latent image on a latent image carrier opposing the developer carrier is developed by the magnetic brush, the magnetic brush bristle height and the developing gap are controlled to keep density of a first color image and density of a second and the ensuing color images in color development at predetermined values or more, thereby maintaining quality of printed images stably. There are also provided method and apparatus of measuring the bristle height of the magnetic brush of the developing apparatus, which bristle height is a parameter indispensable for control of the above developing condition, under the dynamic condition that the developing roller rotates.

    摘要翻译: 在显影装置中,将包含磁性颗粒的显影剂载于显影剂载体上以形成磁刷,并且与显影剂载体相对的潜像载体上的潜像由磁刷显影,磁刷刷高度和显影 控制间隙以将第一彩色图像的密度和第二颜色的浓度以及颜色显影中的随后的彩色图像保持在预定值以上,从而保持打印图像的质量。 还提供了在显影辊旋转的动态条件下测量显影装置的磁刷的刷毛高度的方法和装置,该刷毛高度是用于控制上述显影条件不可缺少的参数。