Image forming apparatus and image forming unit with an improved phase
adjustment means
    1.
    发明授权
    Image forming apparatus and image forming unit with an improved phase adjustment means 失效
    具有改进的相位调整装置的图像形成装置和图像形成单元

    公开(公告)号:US5970286A

    公开(公告)日:1999-10-19

    申请号:US121423

    申请日:1998-07-23

    IPC分类号: G03G15/00 G03G15/01

    CPC分类号: G03G15/757

    摘要: A motor starts its rotation, and a clutch is operated to drive both of a first driving force transmission system for color printing, including drum gears, and a second driving force transmission system for monochrome printing, including a drum gear. The clutch is disengaged to stop the first system when a first sensor detects a mark on one photosensitive drum of the first system at the same time that a second sensor detects a mark on one drum driving gear of the first system. Next, when a third sensor detects a mark on another photosensitive drum of the second system at the same time that a fourth sensor detects a mark on another drum driving gear of the second system, the clutch is reengaged. Consequently, positionings of all the photosensitive body drums (drum gears) for color printing to the photosensitive drum (drum gear) for monochrome printing are performed without causing positional differences by inertia at the time of stop.

    摘要翻译: 电动机开始旋转,并且操作离合器以驱动包括鼓齿轮的用于彩色打印的第一驱动力传动系统和用于单色打印的第二驱动力传动系统,包括鼓齿轮。 当第一传感器检测到第一系统的一个感光鼓上的标记时,第二传感器检测到第一系统的一个鼓驱动齿轮上的标记的同时,离合器被分离以停止第一系统。 接下来,当第三传感器在第四传感器检测到第二系统的另一个鼓驱动齿轮上的标记的同时检测到第二系统的另一感光鼓上的标记时,离合器被重新接头。 因此,进行单色打印的感光鼓(鼓齿轮)的全部用于彩色印刷的感光体鼓(鼓齿轮)的定位,在停止时不会产生惯性的位置差异。

    Developing device, image forming unit and color image forming apparatus,
both having the developing device
    2.
    发明授权
    Developing device, image forming unit and color image forming apparatus, both having the developing device 失效
    显影装置,图像形成单元和彩色图像形成装置都具有显影装置

    公开(公告)号:US6032012A

    公开(公告)日:2000-02-29

    申请号:US181479

    申请日:1998-10-28

    IPC分类号: G03G15/06 G03G15/08

    CPC分类号: G03G15/0815 G03G2215/0119

    摘要: A developing device used in an image forming apparatus has a developing roller at a lower opening of a toner hopper, and the developing roller contacts a photosensitive drum to form a developing portion therebetween. The hopper stores nonmagnetic toner and is provided with a toner stirring member and a toner feed roller being in press-contact with the developing roller in a lower part of the hopper. A doctor blade contacts a circumferential surface of the developing roller on an upstream side of the developing portion in a rotation direction of the drum. A conductive scooping sheet contacts the circumferential surface of the developing roller on a downstream side of the developing portion. A residual toner not used to develop a latent image on the drum and left on the developing roller is passed under the sheet into the hopper with the rotation of the developing roller. A sheet bias voltage ranging from 0V to -250V is applied to the sheet, so that an attaching force of the residual toner to the developing roller is weakened so that the residual toner can be easily removed by the feed roller.

    摘要翻译: 用于图像形成装置的显影装置在调色剂料斗的下开口处具有显影辊,显影辊接触感光鼓以在其间形成显影部。 漏斗存储非磁性调色剂,并且设置有调色剂搅拌构件和调色剂供给辊,其在料斗的下部与显影辊压接。 刮刀在滚筒的旋转方向上在显影部分的上游侧接触显影辊的圆周表面。 导电性刨花板在显影部的下游侧与显影辊的周面接触。 不用于在鼓上显影并留在显影辊上的残留调色剂通过显影辊的旋转而在片材的下方通过料斗。 向片材施加0V至-250V范围内的片材偏置电压,使得残留调色剂对显影辊的附着力减弱,从而残留的调色剂可以通过进给辊容易地去除。

    Toner collector and image forming unit having toner collector bag
    3.
    发明授权
    Toner collector and image forming unit having toner collector bag 失效
    调色剂收集器和具有调色剂收集袋的图像形成单元

    公开(公告)号:US5781841A

    公开(公告)日:1998-07-14

    申请号:US837923

    申请日:1997-04-11

    CPC分类号: G03G21/12

    摘要: A toner collector includes a tube having at least one opening in an intermediate portion between both end portions, one of the both end portions being closed, a toner collecting bag covering the tube, and connected to the tube at the both end portions of the tube, and a waste toner transfer member, connected to the other of the both end portions of the tube, for transferring toner to the other of the both end portions from an outer side of the tube. An image forming unit, which is combined with an image carrier on which an image to be developed by toner is formed, and a cleaner for removing unnecessary toner from the image carrier to make an image forming apparatus so that the image on the image carrier is developed by toner, includes a developing unit for developing the image on the image carrier by toner, a toner hopper having a toner containing space, for supplying toner to the developing unit, a tube provided in the toner containing space of the toner hopper, having at least one opening in an intermediate area between the both end portions, one of the both end portions being closed, a toner collecting bag covering the tube and connected to the tube at the both end portions of the tube, and a waste toner transfer member, connected to the other of the both end portions, for transferring unnecessary toner to the other of the both end portions of the tube from the cleaner.

    摘要翻译: 调色剂收集器包括一个在两个端部之间的中间部分具有至少一个开口的管,两个端部中的一个是封闭的,一个覆盖该管的调色剂收集袋,并且在该管的两个端部处连接到该管 ,以及与管的两个端部中的另一个连接的废调色剂传送构件,用于将调色剂从管的外侧转移到两个端部中的另一个。 一种图像形成单元,其与形成有通过调色剂显影的图像的图像载体组合,以及用于从图像载体去除不需要的调色剂的清洁器,以使图像载体上的图像为 通过调色剂显影,包括用于通过调色剂在图像载体上显影图像的显影单元,具有调色剂容纳空间的调色剂料斗,用于向显影单元供应调色剂,设置在调色剂料斗的调色剂容纳空间中的管, 在两个端部之间的中间区域中的至少一个开口,两个端部中的一个是闭合的,覆盖管并且在管的两个端部处连接到管的调色剂收集袋和废调色剂转移构件 ,连接到两个端部中的另一个,用于将不必要的调色剂转移到管的两个端部中的另一个与清洁器。

    Contact charging member, image forming unit including the contact
charging member and electrophotographic image forming apparatus
including the image forming unit
    4.
    发明授权
    Contact charging member, image forming unit including the contact charging member and electrophotographic image forming apparatus including the image forming unit 失效
    接触充电构件,包括接触充电构件的图像形成单元和包括图像形成单元的电子照相图像形成装置

    公开(公告)号:US5999776A

    公开(公告)日:1999-12-07

    申请号:US63694

    申请日:1998-04-21

    IPC分类号: F16C13/00 G03G15/02

    CPC分类号: G03G15/0233

    摘要: A roller-shaped contact charging member which is in contact with and electrically charges a photosensitive drum is provided on a center shaft, and includes a roller-shaped conductive foam material portion covering the shaft, and a tubular-shaped conductive resin material portion covering the foam portion. The foam portion has an electric resistance of 9.times.10.sup.5 .OMEGA. or less, the resin portion includes conductive agents and has a surface electric resistance in a range from 1.times.10.sup.5 .OMEGA./.quadrature. or more to 9.times.10.sup.7 .OMEGA./.quadrature. or less, and a hardness of the charging roller as a whole is Asker F 90.degree. or less. An image forming unit includes the charging member and the drum. An electrophotographic image forming apparatus supplies a recording paper to the unit, transfers an image from the drum to the paper, and discharges the image-transferred paper.

    摘要翻译: 与感光鼓接触并对其充电的辊状接触充电元件设置在中心轴上,并且包括覆盖轴的辊状导电泡沫材料部分和覆盖该感光鼓的导电树脂材料部分 泡沫部分。 泡沫部分具有9×10 5欧姆或更小的电阻,树脂部分包括导电剂,并且具有1×10 5欧姆/平方厘米或更高至9×10 7欧姆/平方厘米或更小的表面电阻,并且充电辊的硬度 Asker F整体为90°以下。 图像形成单元包括充电构件和滚筒。 电子照相图像形成装置将记录纸提供给单元,将图像从滚筒传送到纸张,并且排出图像转印纸。