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1. 发明专利

JP2013148705A Developing device, and image forming apparatus 有权
标题翻译：开发设备和图像形成装置
公开(公告)号：JP2013148705A
公开(公告)日：2013-08-01
申请号：JP2012008919
申请日：2012-01-19
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： FUJIWARA KOUKO
IPC分类号： G03G15/08 , G03G15/09
摘要： PROBLEM TO BE SOLVED: To provide a compact developing device capable of discharging accumulated toner to the outside of a developer container, and preventing the occurrence of toner fall during image formation.SOLUTION: A developing device is configured such that a developer accumulation part (indicated elliptically by a dotted line in a figure) is formed in the vicinity of the downstream side of the edge of an opening of a developing case arranged below a developing roller 34. By rotating the developing roller 34 in a direction reverse to that during a developing operation, a toner accumulated in the vicinity of the edge of the opening of the developing case (indicated elliptically by a broken line in a figure) is extruded by a developer accumulated on the developer accumulation part to be discharged to the outside of the case.
摘要翻译：要解决的问题：提供一种能够将累积的调色剂排出到显影剂容器的外部的小型显影装置，并且防止在成像期间调色剂下降的发生。解决方案：显影装置构造成使得显影剂积聚部分形成在布置在显影辊34下方的显影盒的开口的边缘的下游侧的附近。通过使显影辊34沿与显影辊34相反的方向旋转。积聚在显影盒的开口边缘附近的调色剂（图中以虚线表示为虚线）的显影剂被积聚在显影剂积存部分上的显影剂挤出，以排出到外壳的外部。

2. 发明专利

JP2013130653A Developing device, image forming device, and process cartridge 审中-公开
标题翻译：开发设备，图像形成设备和处理盒
公开(公告)号：JP2013130653A
公开(公告)日：2013-07-04
申请号：JP2011278799
申请日：2011-12-20
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： HAYASHI TOSHIKI , OYAMA KUNIHIRO , YAMANE MASAYUKI , FUJIWARA KOUKO , KIMURA HIDEKI , TAKAHASHI MASAKI
IPC分类号： G03G15/08
摘要： PROBLEM TO BE SOLVED: To provide a developing device configured to reduce a diameter of a developer carrier and prevent an abnormal image from being generated due to a magnetic carrier deposited on a latent image carrier, and to provide an image forming device including the developing device, and a process cartridge.SOLUTION: The developing device 3 includes a magnet roller 302d having three magnetic poles such as a developing magnetic pole MP1, a developer regulation member counter pole MP3 which is a pre-development magnetic pole, and a casing counter pole MP2 which is a post-development magnetic pole, and a developing sleeve 302c which moves on the surface with a developer 320 comprising a toner and the magnetic carrier carried thereon. A magnetic force in a normal direction which is applied to one magnetic carrier in a position on the surface of the developing sleeve 302c in a developing area α where the developer 320 carried on the developing sleeve 302c comes in contact with the surface of a photoreceptor 1 is set to be 1.0×10[N] or more.
摘要翻译：要解决的问题：提供一种显影装置，其被配置为减小显影剂载体的直径并防止由于沉积在潜像载体上的磁性载体引起的异常图像，并且提供包括显影装置的图像形成装置和处理盒。解决方案：显影装置3包括具有三个磁极的磁辊302d，显影磁极MP1，作为显影前磁极的显影剂调节构件反极MP3和壳体对置极作为显影后磁极的MP2以及显影套筒302c，显影套筒302c在显影剂320的表面上移动，显影剂320包括调色剂和承载在其上的磁性载体。在显影套筒302c上承载的显影剂320与感光体1的表面接触的显影区域α中，在正常方向上施加到显影套筒302c的表面上的位置上的一个磁性载体上的磁力设定为1.0×10 [N]以上。

3. 发明专利

JP2011191581A Developing device, process cartridge having the developing device, and image forming apparatus including the developing device or the process cartridge 有权
标题翻译：具有开发设备的开发设备，具有开发设备的处理盒，以及包括开发设备或过程库的图像形成设备
公开(公告)号：JP2011191581A
公开(公告)日：2011-09-29
申请号：JP2010058664
申请日：2010-03-16
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： FUJIWARA KOUKO , MIYOSHI YASUO , HOSOKAWA HIROSHI , KUDO TSUNEO , OKAMOTO HIROAKI
IPC分类号： G03G15/08
摘要： PROBLEM TO BE SOLVED: To provide a developing device which does not cause depletion of developer even in a condition that the developer 32 is depleted because the developer 32 is not supplied to a developing roller 34 even though the developer 32 exists on a conveyance screw 39 provided at a supply part of the developing device 3.
SOLUTION: The developing device includes a buffer part D where the reservoired developer 32 comes into contact with a peripheral surface of the developing roller 34, and the developer 32 coming into contact with the peripheral surface of the developing roller 34 is carried and conveyed as the developing roller 34 rotates. The developing device includes a supply conveyance path 37 provided along the buffer part D, and having a supply screw 39 for stirring and conveying the developer 32 in a direction parallel with a rotary shaft of the developing roller 34 while supplying the developer 32 to the buffer part D. The developing device includes a conveyance path which passes through a developing area A from the buffer part D of the developer 32 to a collection conveyance path 38 and includes, additionally, a conveyance path which does not pass through the developing area A near the end of the buffer part D on a downstream side in a developer conveying direction of the supply conveyance path 37.
COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：提供即使在显影剂32未被供应到显影辊34的情况下即使在显影剂32存在于显影剂34上的显影剂32耗尽的情况下也不会导致显影剂耗尽的显影装置设置在显影装置3的供给部分的传送螺丝39.解决方案：显影装置包括缓冲部分D，其中储存显影剂32与显影辊34的周面接触，显影剂32到达与显影辊34的周面接触时，显影辊34旋转时被承载并输送。显影装置包括沿着缓冲部分D设置的供给输送路径37，并具有用于在显影剂32向缓冲液供给的同时将显影剂32沿与显影辊34的旋转轴平行的方向搅拌并输送的供给螺杆39 显影装置包括将显影区域A从显影剂32的缓冲部分D通过收集输送路径38的输送路径，另外还包括未通过显影区域A的输送路径缓冲部分D在供给输送路径37的显影剂输送方向的下游侧的端部。版权所有（C）2011，JPO＆INPIT

4. 发明专利

JP2011150248A Developing device, process cartridge, and image forming apparatus 审中-公开
标题翻译：开发设备，过程盒和图像形成装置
公开(公告)号：JP2011150248A
公开(公告)日：2011-08-04
申请号：JP2010013184
申请日：2010-01-25
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： HOSOKAWA HIROSHI , MIYOSHI YASUO , FUJIWARA KOUKO , KUDO TSUNEO , OKAMOTO HIROAKI
IPC分类号： G03G15/08
摘要： PROBLEM TO BE SOLVED: To minimize image density fluctuation by uniforming the toner density of a developer to be supplied to a developer carrier even when a developing device is reduced in size.
SOLUTION: The developing device includes: a developer supply path 33 for supplying a developer to a developing sleeve 5 which supports the developer for forming a toner image on a photoreceptor 1; a supply screw 35 for carrying the developer in the developer supply path 33; a developer recovery path 34 for recovering the developer on the developing sleeve 5 which has passed through a developing area; a recovery screw 36 for carrying the developer in the developer recovery path 34; and a partition member 32 for forming the developer supply path 33 and the developer recovery path 34, the developer supply path 33 being arranged above the developer recovery path 34 across the partition member 32. The device further includes a scraping member 51 which is provided between the developing sleeve 5 and the recovery screw 36 in contact with the developing sleeve 5 to scrape off the developer on the developing sleeve 5.
COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：即使当显影装置尺寸减小时，通过均匀化待提供给显影剂载体的显影剂的调色剂浓度来最小化图像浓度波动。显影装置包括：用于将显影剂供应到显影套筒5的显影剂供应路径33，显影套筒5支撑用于在感光体1上形成调色剂图像的显影剂; 用于将显影剂携带在显影剂供应路径33中的供应螺杆35; 用于回收已经通过显影区域的显影套筒5上的显影剂的显影剂恢复路径34; 用于将显影剂携带在显影剂回收路径34中的回收螺钉36; 以及用于形成显影剂供应路径33和显影剂回收路径34的分隔构件32，显影剂供应路径33布置在显影剂回收路径34的上方跨越分隔构件32。该装置还包括刮擦构件51，显影套筒5和恢复螺丝36与显影套筒5接触以刮除显影套筒5上的显影剂。版权所有（C）2011，JPO＆INPIT

5. 发明专利

JP2010060625A Developing device and image forming apparatus 有权
标题翻译：开发设备和图像形成装置
公开(公告)号：JP2010060625A
公开(公告)日：2010-03-18
申请号：JP2008223560
申请日：2008-09-01
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： KUDO TSUNEO , MIYOSHI YASUO , FUJIWARA KOUKO , SESHIMO TAKUYA , KAI SO
IPC分类号： G03G15/08 , G03G15/09
摘要： PROBLEM TO BE SOLVED: To provide a developing device preventing floating toner in a developing container from scattering outside the developing container with a simple structure. SOLUTION: The developing device includes a developer carrier disposed facing a latent image carrier with an electrostatic latent image to be formed thereon and supplying the developer to the latent image carrier, a first conveyance path provided adjacent to the developer carrier in the longitudinal direction and including a first conveyance member conveying the developer and supplying the developer to the developer carrier, and a second conveyance path provided adjacent to the first conveyance path in the vertical and longitudinal directions and including a second conveyance member conveying the developer in a direction opposite to that of the first conveyance path, wherein both ends of each conveyance path in the longitudinal direction includes first and second communication parts communicating the respective conveyance paths with each other, and a partition member is provided in the developer conveyance path between the developer carrier and the second conveyance path. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供一种防止显影容器中的浮动调色剂以简单的结构散开在显影容器外部的显影装置。解决方案：显影装置包括面向潜像载体的显影剂载体，其上将形成有静电潜像并将显影剂供应给潜像载体;第一输送路径，设置在纵向上与显影剂载体相邻并且包括传送显影剂并将显影剂供应到显影剂载体的第一输送构件和在纵向和纵向方向上与第一输送路径相邻设置的第二输送路径，并且包括沿相反方向输送显影剂的第二输送构件与第一输送路径的长度方向的两端分别具有将各输送路径相互连通的第一连通部和第二连通部，分隔部件设置在显影剂载体和显影剂输送路径之间，第二输送路径。版权所有（C）2010，JPO＆INPIT

6. 发明专利

JP2009265491A Image forming apparatus 审中-公开
标题翻译：图像形成装置
公开(公告)号：JP2009265491A
公开(公告)日：2009-11-12
申请号：JP2008117034
申请日：2008-04-28
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： FUJIWARA KOUKO
IPC分类号： G03G21/00 , G03G9/08
摘要： PROBLEM TO BE SOLVED: To provide an image forming apparatus capable of reducing a time loss due to a forced toner consumption mode operation and satisfactorily maintaining cleaning performance of a transfer member cleaner, with respect to the image forming apparatus which employs a transfer device for transferring a toner image on an image carrier to a recording body held between the image carrier and a transfer member, or to the transfer member itself and has a forced toner consumption mode. SOLUTION: The image forming apparatus has a toner consumption mode that forms a toner consumption pattern outside an image forming region on a photoreceptor and consumes the toner in the developing device. An intermediate transfer member or a transfer conveyance belt as the transfer member is attachable and detachable to and from the photoreceptor and, as the toner consumption mode, a first toner consumption mode that performs toner consumption when the transfer member is brought into contact with the photoreceptor and a second toner consumption mode that performs toner consumption when the transfer member is separated from the photoreceptor are disposed. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：解决的问题：提供一种能够减少由于强制调色剂消耗模式操作引起的时间损失并令人满意地保持转印部件清洁器的清洁性能的图像形成装置相对于采用转印的图像形成装置用于将图像载体上的调色剂图像转印到保持在图像载体和转印构件之间的记录体或转印构件本身并具有强制调色剂消耗模式的装置。解决方案：图像形成装置具有在感光体上形成图像形成区域外的调色剂消耗图案并消耗显影装置中的调色剂的调色剂消耗模式。作为转印部件的中间转印部件或转印传送带可以附着并且可以从感光体分离，并且作为调色剂消耗模式，当转印部件与感光体接触时进行调色剂消耗的第一调色剂消耗模式并且设置当转印部件与感光体分离时执行调色剂消耗的第二调色剂消耗模式。版权所有（C）2010，JPO＆INPIT

7. 发明专利

JP2009031785A Image forming device 审中-公开
标题翻译：图像形成装置
公开(公告)号：JP2009031785A
公开(公告)日：2009-02-12
申请号：JP2008167202
申请日：2008-06-26
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： FUJIWARA KOUKO , YOKOGAWA NOBUHITO , FUKAO TAKESHI , KISHI YOSHIHARU , KATO TSUTOMU , KUMA KAZUOSA , TAKAHASHI MITSURU
IPC分类号： G03G15/14 , G03G15/00 , G03G21/06
摘要： PROBLEM TO BE SOLVED: To provide an image forming device capable of preventing the occurrence of transfer dust due to release discharge stably for a long time without using a current detection means. SOLUTION: This image forming device is provided with an intermediate transfer belt 61 carrying a toner image, a transfer unit 60 transferring the toner image carried by the intermediate transfer belt onto a recording paper P electrostatically, a discharging member 80 discharging the recording paper P having the toner image transferred by the transfer unit 60 on it electrostatically, and a discharging bias power supply circuit 81 applying an electrostatically discharging bias on the discharging member 80. The discharging bias power supply circuit 81 is constituted to count cumulative electrostatically discharging processing time by the discharging member 81 and control an output value of a discharging bias based on the results of counting the time. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：解决问题：提供一种图像形成装置，其能够在不使用电流检测装置的情况下长时间地防止由于释放放电而导致的转印灰尘的发生。该图像形成装置设置有承载调色剂图像的中间转印带61，转印单元60将由中间转印带承载的调色剂图像静电转印到记录纸P上，排出构件80排出记录纸张P具有由转印单元60静电转印的调色剂图像;以及放电偏压电源电路81，对放电部件80施加静电放电偏压。放电偏置电源电路81被构成为对累计静电放电处理由放电部件81进行时间控制，并根据时间的计数结果控制放电偏置的输出值。版权所有（C）2009，JPO＆INPIT

8. 发明专利

JP2005024634A Image forming apparatus 审中-公开
标题翻译：图像形成装置
公开(公告)号：JP2005024634A
公开(公告)日：2005-01-27
申请号：JP2003186999
申请日：2003-06-30
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： OGIYAMA HIROMI , YOSHIDA TAKESHI , KAYAHARA SHIN , SAWAI YUJI , KATO SHINJI , TAKEHARA ATSUSHI , FUJIWARA KOUKO
IPC分类号： G03G21/00 , G03G15/16 , G03G21/14
摘要： PROBLEM TO BE SOLVED: To provide an image forming apparatus that always produces a stable image without causing abnormal discharge trace or image density decrease even when changing the linear velocity of an intermediate transfer body. SOLUTION: The image forming apparatus detects the thickness of a recording medium with a thickness detecting device (S11) and, based on the detected thickness of the recording medium, makes alteration to an image formation mode set in advance (S12). The image forming apparatus switches the linear speed of an intermediate transfer belt, the value of a transfer current applied to a secondary transfer roller, and fixing linear velocity to values set according to each image formation mode (S13), and then performs an image forming operation (S14). COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种即使在改变中间转印体的线速度时也始终产生稳定图像而不引起异常放电痕迹或图像密度降低的图像形成装置。解决方案：图像形成装置用厚度检测装置检测记录介质的厚度（S11），并且基于检测到的记录介质的厚度改变预先设置的图像形成模式（S12）。图像形成装置切换中间转印带的线速度，施加到二次转印辊的转印电流的值，并将线速度固定为根据各图像形成模式设定的值（S13），然后进行图像形成操作（S14）。版权所有（C）2005，JPO＆NCIPI

9. 发明专利

JP2005017481A Image forming apparatus 有权
标题翻译：图像形成装置
公开(公告)号：JP2005017481A
公开(公告)日：2005-01-20
申请号：JP2003179589
申请日：2003-06-24
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： FUJIWARA KOUKO , SAWAI YUJI , TAKEHARA ATSUSHI , KATO SHINJI , KAYAHARA SHIN , YOSHIDA TAKESHI , OGIYAMA HIROMI
IPC分类号： G03G15/00 , G03G15/01 , G03G15/16
摘要： PROBLEM TO BE SOLVED: To provide an image forming apparatus in which the state of spreading of a toner image can be accurately measured. SOLUTION: The image forming apparatus is provided with a CCD camera 100 detecting the state of the toner image formed for detection. When the state of spreading in a toner image surrounding is detected by the CCD camera 100, the detection is carried out in a process condition which is slower than in image formation, or with process linear speed at zero. Since the process linear speed is slow in spreading detection, the state of spreading of the toner image can be correctly recognized. Therefore, control surely reducing the spreading of the toner image can be obtained. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供可以精确测量调色剂图像的扩展状态的图像形成装置。解决方案：图像形成装置设置有CCD摄像机100，其检测形成的用于检测的调色剂图像的状态。当通过CCD照相机100检测到调色剂图像中的扩散状态时，在比图像形成慢的处理条件下或者处理线速度为零的情况下进行检测。由于在扩展检测中处理线速度较慢，因此可以正确地识别调色剂图像的扩展状态。因此，可以确实地降低调色剂图像的扩展。版权所有（C）2005，JPO＆NCIPI

10. 发明专利

JP2004258073A Image forming apparatus and transfer device 审中-公开
公开(公告)号：JP2004258073A
公开(公告)日：2004-09-16
申请号：JP2003045539
申请日：2003-02-24
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： FUJIWARA KOUKO
IPC分类号： G03G15/01 , G03G15/16
摘要： PROBLEM TO BE SOLVED: To provide an image forming apparatus that restricts discharge of a transfer material 100 which occurs on a transport guide plate 101 or in a fixing unit after passage of the transfer material 100 through a transfer process or that hinders dust even in a case discharge occurs, that has two developing means and two image carriers but has no means for discharging the transfer material 100, and that directly transfers an image from an image carrier to the transfer material 100.
SOLUTION: The amount of electrification of developer in the developing means used in the final transfer is made larger than the amount of electrification of developer in the developing means used in the other transfer. Alternatively, a transfer current in the final transfer is made larger than a transfer current in the other transfer.
COPYRIGHT: (C)2004,JPO&NCIPI

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