公开(公告)号：US4674439A

公开(公告)日：1987-06-23

申请号：US906396

申请日：1986-09-12

申请人： Koji Sakamoto ,  Toshio Kaneko ,  Fuchio Kanno ,  Wataru Yasuda

发明人： Koji Sakamoto ,  Toshio Kaneko ,  Fuchio Kanno ,  Wataru Yasuda

IPC分类号： G03G15/09

CPC分类号： G03G15/09

摘要： A developing device for developing an electrostatic latent image formed on an image bearing member such as a photosensitive member for use in an electrophotographic copying machine and the like using magnetic toner particles includes a rotatable sleeve, a magnet roll disposed inside of the sleeve and a doctor blade pressed against the sleeve for charging and forming a thin film of toner particles to be used in developing the latent image. In one form, the blade is provided movably in parallel with the rotating axis of the sleeve. In another form, an electrically conductive brush is provided to remove residual charges from the sleeve after each developing operation. In a further form, the tip end of the blade is disposed between the two adjacent magnetic poles of the magnet roll. In a still further form, the blade is constructed to have a two-part structure.

摘要翻译： 用于使用磁性调色剂颗粒形成在诸如用于电子照相复印机等的感光部件的图像承载部件上的静电潜像的显影装置包括可旋转套筒，设置在套筒内部的磁辊和医生 叶片压靠在套筒上，用于充电并形成用于显影潜像的调色剂颗粒薄膜。 在一种形式中，刀片可移动地设置成与套筒的旋转轴线平行。 在另一种形式中，提供导电刷以在每次显影操作之后从套筒去除残余电荷。 在另一种形式中，叶片的尖端设置在磁辊的两个相邻的磁极之间。 在另一种形式中，叶片构造成具有两部分结构。

公开(公告)号：US4561381A

公开(公告)日：1985-12-31

申请号：US564245

申请日：1983-12-21

申请人： Toshio Kaneko ,  Koji Sakamoto ,  Fuchio Kanno ,  Wataru Yasuda

发明人： Toshio Kaneko ,  Koji Sakamoto ,  Fuchio Kanno ,  Wataru Yasuda

IPC分类号： G03G15/08 ,  G03G15/09 ,  G03G15/06

CPC分类号： G03G15/09 ,  G03G15/0815 ,  G03G2215/0617 ,  G03G2215/0636

摘要： A device for developing an electrostatic latent image formed on an imaging surface by applying a thin film of uniformly charged magnetic toner includes a sleeve which is driven to rotate at constant speed in an intended direction, a hopper for supplying toner to said sleeve, a pressure blade pressed against the sleeve to form the thin film of charged toner on the sleeve and a discharging scraper provided with a plurality of holes and disposed in contact with the sleeve at a location downstream of the developing region, whereby remaining toner on the sleeve is scraped off the sleeve and returned to the sleeve after passing through the holes, to thereby have the charge remaining on the sleeve removed by the discharging scraper.

摘要翻译： 通过施加均匀充电的磁性调色剂的薄膜来显影形成在成像表面上的静电潜像的装置包括一个套筒，该套筒被驱动以一个预定的方向以一定的速度旋转，用于向所述套筒供应调色剂的料斗， 刀片压靠在套筒上以在套筒上形成带电调色剂的薄膜，以及设置有多个孔的排出刮刀，并在显影区域下游的位置处与套筒接触，从而刮除套筒上的剩余调色剂 脱离套筒并在通过孔后返回套筒，从而使排出刮刀上的剩余电荷留在套筒上。

公开(公告)号：US4625676A

公开(公告)日：1986-12-02

申请号：US466928

申请日：1983-02-16

申请人： Koji Sakamoto ,  Toshio Kaneko ,  Fuchio Kanno ,  Wataru Yasuda

发明人： Koji Sakamoto ,  Toshio Kaneko ,  Fuchio Kanno ,  Wataru Yasuda

IPC分类号： G03G15/09

CPC分类号： G03G15/09

摘要： A developing device for developing an electrostatic latent image formed on an image bearing member such as a photosensitive member for use in an electrophotographic copying machine and the like using magnetic toner particles includes a rotatable sleeve, a magnet roll disposed inside of the sleeve and a doctor blade pressed against the sleeve for charging and forming a thin film of toner particles to be used in developing the latent image. In one form, the blade is provided movably in parallel with the rotating axis of the sleeve. In another form, an electrically conductive brush is provided to remove residual charges from the sleeve after each developing operation. In a further form, the tip end of the blade is disposed between the two adjacent magnetic poles of the magnet roll. In a still further form, the blade is constructed to have a two-part structure.

公开(公告)号：US4624545A

公开(公告)日：1986-11-25

申请号：US542034

申请日：1983-10-14

申请人： Wataru Yasuda ,  Koji Sakamoto ,  Toshio Kaneko ,  Fuchio Kanno

发明人： Wataru Yasuda ,  Koji Sakamoto ,  Toshio Kaneko ,  Fuchio Kanno

IPC分类号： G03G15/09

CPC分类号： G03G15/0914

摘要： A device is provided for developing an electrostatic latent image formed on an image bearing member with a developer comprised of magnetically attractable, electrically insulating toner particles for developing the latent image by applying the toner particles in the form of a thin film uniform in charge and thickness. The developing device generally comprises a developing sleeve, which is driven to rotate to carry thereon toner particles, and a pressure plate is held in pressure contact with the sleeve to thereby form a thin film of charged toner particles on the sleeve upstream of the developing station. In one aspect of the present invention, the pressure plate has a low hardness or relatively easily wearable region which is in pressure contact with the sleeve so as to prevent toner particles from permanently sticking to the pressure plate. In another aspect, the pressure plate is structured to have a locally defined relatively easily deflectable region which is in pressure contact with the sleeve. In a further aspect, the pressure plate is movable with respect to the sleeve to thereby remove stuck toner particles from the pressure plate and from the sleeve. In a still further aspect, a separator strip is provided, interposed between the pressure plate and the sleeve, which also keeps toner particles from sticking to the pressure plate. In a still further aspect, a cleaner is provided for cleaning the pressure plate periodically or continuously in order to keep toner particles from sticking to the pressure plate and to allow a thin film of uniformly charged toner particles to be formed on the sleeve for use in developing the latent image at the developing station.

摘要翻译： 提供一种装置，用于通过将具有均匀电荷和厚度的薄膜形式的调色剂颗粒与由可吸引的电绝缘调色剂颗粒组成的显影剂显影在图像承载部件上形成的静电潜像，用于显影潜像 。 显影装置通常包括显影套筒，其被驱动旋转以承载调色剂颗粒，并且压力板保持与套筒压力接触，从而在显影台上游的套筒上形成带电调色剂颗粒的薄膜 。 在本发明的一个方面，压板具有与套筒压力接触的低硬度或相对容易穿戴的区域，以防止调色剂颗粒永久地粘附在压力板上。 在另一方面，压板被构造成具有与套筒压力接触的局部限定的相对容易偏转的区域。 在另一方面，压板可相对于套筒移动，从而从压板和套筒中去除粘附的调色剂颗粒。 在另一方面，提供了隔离带，介于压板和套筒之间，这也使调色剂颗粒不会粘附到压板上。 在另一方面，提供一种清洁器，用于周期性地或连续地清洁压力板，以便使调色剂颗粒不会粘附到压力板上，并且允许在套筒上​​形成均匀带电的调色剂颗粒的薄膜，以用于 在开发站发展潜像。

公开(公告)号：US4575220A

公开(公告)日：1986-03-11

申请号：US561534

申请日：1983-12-14

申请人： Koji Sakamoto ,  Toshio Kaneko ,  Fuchio Kanno ,  Wataru Yasuda

发明人： Koji Sakamoto ,  Toshio Kaneko ,  Fuchio Kanno ,  Wataru Yasuda

IPC分类号： G03G15/08 ,  G03G15/09

CPC分类号： G03G15/0812 ,  G03G15/09 ,  G03G2215/0617 ,  G03G2215/0636

摘要： A device for developing an electrostatic latent image formed on a photosensitive member includes a developing sleeve which is driven to rotate in a predetermined direction and a pressure blade which is kept pressed against the sleeve to form a thin film of uniformly charged toner so as to apply for the latent image for development. In accordance with the present invention, the forward end portion of the pressure blade is specifically shaped such that a projection having the width which substantially corresponds to the width of an image forming area of the photosensitive member is provided to extend beyond a contact line between the sleeve and the blade thereby allowing to form the thin film of toner whose width substantially corresponds to the image forming area of the photosensitive member, thereby preventing the waste of toner from occurring.

摘要翻译： 用于显影形成在感光构件上的静电潜像的装置包括被驱动为沿预定方向旋转的显影套筒和保持压靠套筒的压力叶片，以形成均匀充电的调色剂的薄膜，以便施加 为潜在的发展形象。 根据本发明，压力叶片的前端部分被特别地成形为使得具有基本上对应于感光构件的图像形成区域的宽度的宽度的突起被设置成延伸超过感光构件的图像形成区域的接触线 套筒和刀片，从而允许形成其宽度基本上对应于感光构件的图像形成区域的调色剂薄膜，从而防止调色剂的浪费。

公开(公告)号：US4896625A

公开(公告)日：1990-01-30

申请号：US206928

申请日：1988-05-31

申请人： Koji Sakamoto ,  Toshio Kaneko ,  Wataru Yasuda ,  Fuchio Kanno

发明人： Koji Sakamoto ,  Toshio Kaneko ,  Wataru Yasuda ,  Fuchio Kanno

IPC分类号： G03G15/09

CPC分类号： G03G15/09

摘要： A developing device for developing an electrostatic latent image formed on an image bearing member such as a photosensitive member for use in an electrophotographic copying machine and the like using magnetic toner particles includes a rotatable sleeve, a magnet roll disposed inside of the sleeve and a doctor blade pressed against the sleeve for charging and forming a thin film of toner particles to be used in developing the latent image. In one form, the blade is provided movably in parallel with the rotating axis of the sleeve. In another form, an electrically conductive brush is provided to remove residual charges from the sleeve after each developing operation. In a further form, the tip end of the blade is disposed between the two adjacent magnetic poles of the magnet roll. In a still further form, the blade is constructed to have a two-part structure.

公开(公告)号：US4656964A

公开(公告)日：1987-04-14

申请号：US565273

申请日：1983-12-27

申请人： Fuchio Kanno ,  Kazuo Kobayashi ,  Koji Sakamoto ,  Toshio Kaneko ,  Wataru Yasuda

发明人： Fuchio Kanno ,  Kazuo Kobayashi ,  Koji Sakamoto ,  Toshio Kaneko ,  Wataru Yasuda

IPC分类号： G03G15/08 ,  G03G15/09

CPC分类号： G03G15/0818 ,  G03G15/0921 ,  G03G2215/0617 ,  G03G2215/0636

摘要： A device for developing an electrostatic latent image formed on a photosensitive member includes a composite sleeve which is comprised of a cylindrical support, a dielectric layer formed on the support and a plurality of fine magnets serving as floating electrodes embedded in the dielectric layer and which is driven to rotate to carry magnetic toner as magnetically attracted to its outer peripheral surface.

摘要翻译： 用于显影形成在感光构件上的静电潜像的装置包括复合套筒，该复合套筒由圆柱形支撑件，形成在支撑体上的电介质层和多个细小磁体构成，该微细磁体用作嵌入电介质层中的浮动电极， 被驱动旋转以将磁性调色剂磁吸引到其外周表面。

公开(公告)号：US4564285A

公开(公告)日：1986-01-14

申请号：US498988

申请日：1983-05-27

申请人： Wataru Yasuda ,  Koji Sakamoto ,  Fuchio Kanno

发明人： Wataru Yasuda ,  Koji Sakamoto ,  Fuchio Kanno

IPC分类号： G03G15/09 ,  G03G15/08

CPC分类号： G03G15/0928 ,  G03G2215/0653

摘要： A developing device includes a developing sleeve driven to rotate to transport a film of developer riding on its outer peripheral surface, the developing sleeve including an electrically conductive cylinder, a dielectric layer formed on the cylinder and a plurality of fine electrodes provided electrically isolated from each other at least at the outer peripheral surface of the dielectric layer. In one form, each of the fine electrodes is previously coated with an insulating material having the volume resistivity of 10.sup.12 ohms-cm or more to a thickness of 0.5 microns to 0.5 mm. An intermediate dielectric layer may be provided between the cylinder and the first dielectric layer. Further, an electrically conductive layer may be provided as sandwiched between the two dielectric layers. Moreover, the outermost surface of the sleeve may be appropriately roughened in view of the average diameter of toner particles used.

摘要翻译： 一种显影装置，包括：驱动旋转的显影套筒，用于传送显影剂在其外圆周表面上的运送;显影套筒包括导电圆柱体，形成在圆柱体上的电介质层，以及多个细微电极， 至少在电介质层的外周面上。 在一种形式中，每个细电极预先用体积电阻率为1012欧姆 - 厘米或更大的绝缘材料涂覆至0.5微米至0.5毫米的厚度。 中间电介质层可以设置在圆柱体和第一介电层之间。 此外，可以在两个电介质层之间夹着导电层。 此外，鉴于所使用的调色剂颗粒的平均直径，套筒的最外表面可以适当地粗糙化。

公开(公告)号：US4528937A

公开(公告)日：1985-07-16

申请号：US674037

申请日：1984-11-23

申请人： Fuchio Kanno ,  Koji Sakamoto ,  Kazuo Kobayashi ,  Wataru Yasuda ,  Hiromi Ogiyama

发明人： Fuchio Kanno ,  Koji Sakamoto ,  Kazuo Kobayashi ,  Wataru Yasuda ,  Hiromi Ogiyama

IPC分类号： G03G15/08 ,  G03G15/09

CPC分类号： B82Y15/00 ,  G03G15/09

摘要： A device for forming a toner film for use in developing an electrostatic latent image on an image bearing member, such as photosensitive member, is provided. A developing sleeve is rotatably provided and a magnet roll is also rotatably provided inside of the sleeve for magnetically attracting a blade of magnetic material to the outer peripheral surface of the sleeve thereby causing the toner carried on the sleeve to be formed into a film of desired thickness and charge. The magnet roll is formed with a plurality of magnetic poles elongated axially and arranged along the periphery of the roll in alternating polarities. Thus, the magnetic attractive force applied by the magnet roll to the blade changes periodically. In the present invention, the frequency of alternating magnetic field applied to the blade is set to be larger than the first order resonant frequency of the blade, thereby allowing to maintain the applied magnetic force as constant as possible.

摘要翻译： 提供一种用于形成用于在诸如感光部件的图像承载部件上显影静电潜像的调色剂膜的装置。 可旋转地设置显影套筒，并且磁体辊也可旋转地设置在套筒的内部，用于将磁性材料片磁吸引到套筒的外周表面，从而使承载在套筒上的调色剂形成为期望的膜 厚度和电荷。 磁辊形成有多个轴向伸长的磁极，并以交替极性沿着辊的周边布置。 因此，由磁辊施加到叶片的磁吸引力周期性地变化。 在本发明中，施加到叶片的交变磁场的频率被设定为大于叶片的一阶谐振频率，从而使施加的磁力保持尽可能的一致。

公开(公告)号：US5678129A

公开(公告)日：1997-10-14

申请号：US536216

申请日：1995-09-29

申请人： Wataru Yasuda ,  Shinsuke Kikui ,  Naomi Sugimoto

发明人： Wataru Yasuda ,  Shinsuke Kikui ,  Naomi Sugimoto

IPC分类号： G03G15/02

CPC分类号： G03G15/0266 ,  G03G2215/021

摘要： An image forming apparatus includes a charging member to be contacted with a rotating photosensitive body so as to charge the photosensitive body, a temperature detection device for detecting temperature of the charging member, and a voltage control device for controlling a voltage to be supplied to the charging member in accordance with a temperature value detected by the temperature detection device. The control device includes a detection temperature read device for reading the detection temperature value detected by the temperature detection device, a voltage calculation device for calculating a voltage to be supplied to the charging member based on the detection temperature value read by the detection temperature read device, and a maintenance device for maintaining a charging voltage as it is, which charging voltage is calculated last time, when a difference between the detection temperature value currently read by the detection temperature read device and the detection temperature value which is read last time by the detection temperature read device has exceeded a preset temperature value.

摘要翻译： 图像形成装置包括：与旋转的感光体接触以对感光体充电的充电部件，用于检测充电部件的温度的温度检测装置，以及用于控制向所述感光体供给的电压的电压控制装置 充电构件根据由温度检测装置检测的温度值。 该控制装置包括：检测温度读取装置，用于读取由温度检测装置检测的检测温度值;电压计算装置，用于根据由检测温度读取装置读取的检测温度值，计算要提供给充电部件的电压 以及用于维持充电电压的维护装置，该充电电压是上次计算的，当检测温度读取装置当前读取的检测温度值与上次读取的检测温度值之间的差异由 检测温度读取装置已超过预设温度值。