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1. 发明专利

JP2014186291A Developer carrier, developing device, process cartridge, and image forming apparatus 审中-公开
标题翻译：开发商运营商，开发设备，流程盒和图像形成设备
公开(公告)号：JP2014186291A
公开(公告)日：2014-10-02
申请号：JP2013137137
申请日：2013-06-28
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： ASAMI AKIRA , KOIKE TOSHIO , OMURA TOMOYA , YAMADA MASAAKI , OKAMOTO HIROAKI , HATTORI YOSHIO , FUKUDA YOSHIYUKI , AKIYAMA SHO , KOJIMA TOSHIO , HIZUKA KYOTA , OSAWA MASAYUKI , KAMIYA NORIYUKI , SHIMIZU YASUNOBU , MORO YUKI
IPC分类号： G03G15/08 , G03G9/10 , G03G15/09
摘要： PROBLEM TO BE SOLVED: To develop images with a stable amount of toner without being affected by a toner consumption history of an immediately previous image, and provide uniform images having excellent color reproducibility for a long period.SOLUTION: A developer carrier 50 according to the present invention includes developer support means 51 that supplies a two-component developer G including a toner and a carrier to an electrostatic latent image formed on an image carrier 1, and has a rotatable cylindrical shape, and magnetic field generation means 55 that is provided and fixed inside the developer support means. The developer support means 51 has a surface 51a subjected to sand blast treatment, and the surface has an average surface roughness Ra of 4.0 μm or more and 8.0 μm or less.
摘要翻译：要解决的问题：为了开发具有稳定量的调色剂的图像而不受紧接着的图像的调色剂消耗历史的影响，并且提供长时间具有优异的颜色再现性的均匀图像。解决方案：根据本发明包括显影剂支撑装置51，其将包括调色剂和载体的双组分显影剂G供应到形成在图像载体1上的静电潜像，并且具有可旋转的圆柱形形状，以及磁场产生装置55，固定在显影剂支撑装置内。显影剂支撑装置51具有进行喷砂处理的表面51a，并且该表面的平均表面粗糙度Ra为4.0μm以上至8.0μm以下。

2. 发明专利

JP2014026296A Developing device, image forming apparatus and process cartridge with the same 有权
标题翻译：开发设备，图像形成装置和具有相同功能的处理盒
公开(公告)号：JP2014026296A
公开(公告)日：2014-02-06
申请号：JP2013229231
申请日：2013-11-05
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： OZEKI TAKAMASA , MASUDA KATSUMI , HATTORI YOSHIO , UENISHI HIROYUKI , SUZUKI YUJI , HIZUKA KYOTA , OSAWA MASAYUKI , TAKANO YOSHIYUKI , KURENUMA TAKERO , ASAMI AKIRA , TAGUCHI NOBUYUKI
IPC分类号： G03G15/09 , G03G15/08
摘要： PROBLEM TO BE SOLVED: To decrease image density unevenness, while realizing lower stress on developer, in a region on an upstream side of a regulation position by a developer restricting member.SOLUTION: A magnet roller 147 comprises an N2 pole and an N3 pole of the same polarity mutually adjacent to each other, for generating magnetic force for separating developer from a developing sleeve 141, after the developer passes through a developing region. A doctor auxiliary member 146b is fixed to a doctor blade 146, and a magnetic pole facing surface 146b1 of the doctor auxiliary member is disposed outside an outer circumference face of the developing sleeve on an upstream side, with respect to the doctor blade so that the magnetic pole facing surface 146b1 faces the N3 pole over development effective width.
摘要翻译：要解决的问题：为了降低图像浓度不均匀性，同时通过显影剂限制构件在显影剂限制部件的调节位置的上游侧的区域中实现较低的应力。磁性辊147包括N2极和N3极在显影剂通过显影区域之后，产生相互相邻的相同极性，用于产生用于将显影剂从显影套筒141分离的磁力。医生辅助构件146b固定在刮刀146上，并且刮刀辅助构件的磁极相对表面146b1相对于刮刀布置在上游侧的显影套筒的外周面的外侧，使得面向磁极的表面146b1面对N3极超过显影有效宽度。

3. 发明专利

JP2012256084A Magnetic field generating member and manufacturing method thereof, magnetic particle carrier, development device, process cartridge, and image formation device 审中-公开
标题翻译：磁场发生器及其制造方法，磁颗粒载体，开发装置，工艺盒和图像形成装置
公开(公告)号：JP2012256084A
公开(公告)日：2012-12-27
申请号：JP2012220210
申请日：2012-10-02
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： TAKANO YOSHIYUKI , HIZUKA KYOTA , KAMIYA NORIYUKI , OSAWA MASAYUKI , TERAJIMA MIEKO , SUZUKI TSUTOMU , ABE HIROYA , INNAMI TAKASHI , HATTORI TADAAKI
IPC分类号： G03G15/09
摘要： PROBLEM TO BE SOLVED: To provide a magnetic field generating member capable of enhancing rigidity and downsizing, a development device with the magnetic field generating member, a process cartridge, an image formation device, and a method for manufacturing the magnetic field generating member.SOLUTION: The magnetic field generating member comprises: a cylindrical body part; a body part groove with a rectangular cross section provided along the axial direction of the cylindrical body part on the outer peripheral surface thereof; and a long magnet compact fixed in the groove of the body part. A groove-shaped member with an U-shaped cross section is fixed in the groove of the body part. The long magnet compact is fixed in the groove of the groove-shaped member. The groove-shaped member is pressed and fixed in the groove of the body part. The groove of the body part is formed so that a width of the bottom surface is larger than that of the opening, and the groove-shaped member is formed so that a width of the floor part in the groove-shaped member is larger than that of the opening thereof when the groove-shaped member is pressed into the groove of the body part.
摘要翻译：解决的问题：为了提供能够提高刚性和小型化的磁场产生部件，具有磁场产生部件的显影装置，处理盒，图像形成装置和用于制造磁场产生的方法会员。解决方案：磁场产生部件包括：圆柱体部分; 具有矩形横截面的主体部分凹槽，其沿其圆柱体部分的轴向方向设置在其外周表面上; 以及固定在身体部分的槽中的长磁体紧凑体。具有U形横截面的槽形构件固定在主体部分的凹槽中。该长磁体压块固定在槽形部件的槽中。槽状构件被压固并固定在主体部分的槽中。主体部的槽形成为使得底面的宽度大于开口的宽度，并且形成槽状部件，使得槽状部件中的底板部的宽度大于当槽状构件被压入身体部分的凹槽中时，其开口。版权所有（C）2013，JPO＆INPIT

4. 发明专利

JP2012168225A Developing sleeve, developing roller, developing device, process cartridge, image forming apparatus, and method of manufacturing developing sleeve 审中-公开
标题翻译：开发套筒，开发滚子，开发装置，工艺盒，图像形成装置和制造开发套筒的方法
公开(公告)号：JP2012168225A
公开(公告)日：2012-09-06
申请号：JP2011026851
申请日：2011-02-10
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： KAMIYA NORIYUKI , KOJIMA TOSHIO , HIZUKA KYOTA , OSAWA MASAYUKI , TERASAKA TAKUMI , ABE HIROYA
IPC分类号： G03G15/08 , G03G15/09
摘要： PROBLEM TO BE SOLVED: To provide a developing sleeve, a developing roller, and a developing device that prevent density unevenness of an image without reducing the amount of conveyance of developer; a process cartridge and an image forming apparatus that include the developing device; and a method of manufacturing the developing sleeve.SOLUTION: A developing sleeve 132 is provided with a plurality of dents 139 each having an elliptical shape in a plan view on an outer surface thereof in a regular manner at intervals so as not to be overlapped with one another. The developing sleeve 132 is further provided with a low-friction film 136 on the outer surface thereof only at portions between the plurality of dents 139.
摘要翻译：要解决的问题：提供一种防止图像的浓度不均匀性而不减少显影剂的传送量的显影套筒，显影辊和显影装置; 处理盒和包括显影装置的图像形成装置; 以及制造显影套筒的方法。解决方案：显影套筒132设置有多个凹口139，每个凹部139在其外表面上以规则的方式在平面图中以间隔彼此重叠的方式形成椭圆形。显影套筒132还在其外表面上仅在多个凹部139之间的部分处设置有低摩擦膜136.版权所有（C）2012，JPO＆INPIT

5. 发明专利

JP2011237473A Development roller, development device, process cartridge and image forming device 审中-公开
标题翻译：开发滚子，开发设备，过程盒和图像形成装置
公开(公告)号：JP2011237473A
公开(公告)日：2011-11-24
申请号：JP2010106150
申请日：2010-05-06
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： OSAWA MASAYUKI , KOJIMA TOSHIO , HIZUKA KYOTA , TAKANO YOSHIYUKI , KAMIYA NORIYUKI , INNAMI TAKASHI , TERASAKA TAKUMI
IPC分类号： G03G15/08
CPC分类号： G03G15/0818 , G03G2215/0634
摘要： PROBLEM TO BE SOLVED: To provide a development roller and a development device capable of suppressing reduction in the conveyance amount of a developer due to secular change and preventing occurrence of image unevenness, and also to provide a process cartridge equipped with the development device, and an image forming device.SOLUTION: On the external surface of a development sleeve 132, numerous recesses 139 formed in an ellipse shape in a plane view are regularly provided at intervals mutually along a longitudinal direction of the development sleeve 132. The longitudinal direction of the recesses 139 intersects with the longitudinal direction of the development sleeve 132, and the recesses 139 are provided so that a downstream side is deepened as compared with an upstream side in a rotation direction of the development sleeve 132.
摘要翻译：解决的问题：提供一种显影辊和显影装置，其能够抑制由于长期变化导致的显影剂的输送量的减少，并且防止图像不均匀的发生，并且还提供一种装配有显影的处理盒装置和图像形成装置。解决方案：在显影套筒132的外表面上，以平面图形式形成为椭圆形的多个凹部139沿着显影套筒132的纵向方向相互间隔地规则地设置。凹部139的纵向方向与显影套筒132的纵向方向相交，并且凹部139设置成与显影套筒132的旋转方向上的上游侧相比下游侧加深。（C）2012年， JPO＆INPIT

6. 发明专利

JP2010204190A Magnetic field generating member, magnetic particle carrier, developing device, process cartridge, and image forming apparatus 有权
标题翻译：磁场发生器，磁性载体，开发装置，工艺盒和图像形成装置
公开(公告)号：JP2010204190A
公开(公告)日：2010-09-16
申请号：JP2009046940
申请日：2009-02-27
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： TAKANO YOSHIYUKI , HIZUKA KYOTA , KAMIYA NORIYUKI , OSAWA MASAYUKI , ABE HIROYA , HATTORI TADAAKI , SUZUKI TSUTOMU , INNAMI TAKASHI
IPC分类号： G03G15/09 , H01F7/02
摘要： PROBLEM TO BE SOLVED: To provide a highly accurate magnetic field generating member that minimizes warp (straightness) despite high cycle molding in order to improve molding efficient, is improved in rigidity and hence reduced in size, and to provide a magnetic particle carrier having a magnetic field generating member, a developing device having the magnetic particle carrier, a process cartridge having the developing device, and an image forming apparatus having the process cartridge. SOLUTION: In the magnetic field generating member 140, (1) the groove bottom 144a and groove sides 144b of the body 140a have a curved shape, (2) in terms of the height from the groove bottom 144b of the body 140a to the peripheral surface of the body 140a, the middle of the body 140a is lower than both ends of the body 140a, and (3) in terms of the width between the opposite sides of the groove 144 of the body 140a, the middle of the body 140a is narrower than both ends of the body 140a, and (4) fine recesses and projections are formed on the surface of the body 140a opposite the groove 144 of the body 140a. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：为了提供尽可能高循环模制以尽可能提高成型效率而使经纱（直线度）最小化的高精度磁场产生元件，刚性提高并因此减小尺寸，并提供磁性颗粒具有磁场产生部件的载体，具有磁性颗粒载体的显影装置，具有显影装置的处理盒，以及具有该处理盒的图像形成装置。解决方案：在磁场产生部件140中，（1）主体140a的凹槽底部144a和凹槽侧面144b具有弯曲形状，（2）从主体140a的凹槽底部144b的高度方面在本体140a的周面上，主体140a的中间比主体140a的两端低，（3）就本体140a的槽144的相对侧之间的宽度而言，主体140a比主体140a的两端窄，（4）在主体140a的与主体140a的凹槽144相对的表面上形成微细的凹凸。版权所有（C）2010，JPO＆INPIT

7. 发明专利

JP2010061064A Developer carrier, development device, process cartridge, and image forming apparatus 审中-公开
标题翻译：开发商运营商，开发设备，流程盒和图像形成设备
公开(公告)号：JP2010061064A
公开(公告)日：2010-03-18
申请号：JP2008229400
申请日：2008-09-08
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： OSAWA MASAYUKI , HATTORI TADAAKI , HIZUKA KYOTA , TAKANO YOSHIYUKI , KAMIYA NORIYUKI , SUZUKI TSUTOMU , ABE HIROYA , INNAMI TAKASHI
IPC分类号： G03G15/09 , G03G15/08
CPC分类号： G03G15/0928
摘要： PROBLEM TO BE SOLVED: To provide a developer carrier, a developing device, a process cartridge and an image forming apparatus that can prevent entrainment of a developer by the developer carrier and can provide an image with a uniform density. SOLUTION: The developer carrier includes magnetic field generating means 25, provided with a plurality of magnetic poles including an agent-separating pole P4 and a scoop pole P6, and a cylindrical hollow body accommodating therein the magnetic field generating means 25 and rotated around an axis of the cylindrical hollow body. The half-value width of the magnetic flux density at both ends of at least one magnetic pole of the agent separating pole P4 and the scooping pole P5 is formed identical to or narrower than the half-value width of the magnetic flux density at a center of the one magnetic pole. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供一种显影剂载体，显影装置，处理盒和图像形成装置，其可以防止显影剂载体夹带显影剂，并且可以提供具有均匀密度的图像。解决方案：显影剂载体包括磁场产生装置25，该磁场产生装置25设有多个包括一个试剂分离极P4和一个勺极P6的磁极，以及容纳其中的磁场产生装置25并旋转的圆柱形中空体围绕圆柱形中空体的轴线。试剂分离极P4和汲取极P5的至少一个磁极的两端的磁通密度的半值宽度形成为与中心处的磁通密度的半值宽度相同或更窄的一个磁极。版权所有（C）2010，JPO＆INPIT

8. 发明专利

JP2010015120A Developing unit, image forming apparatus and process cartridge incorporating the same 有权
标题翻译：发展单位，图像形成装置和与其同时进行的工艺盒
公开(公告)号：JP2010015120A
公开(公告)日：2010-01-21
申请号：JP2008242840
申请日：2008-09-22
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： OZEKI TAKAMASA , MASUDA KATSUMI , HATTORI YOSHIO , UENISHI HIROYUKI , SUZUKI YUJI , HIZUKA KYOTA , OSAWA MASAYUKI , TAKANO YOSHIYUKI , KURENUMA TAKERO , ASAMI AKIRA , TAGUCHI NOBUYUKI
IPC分类号： G03G15/09 , G03G9/08 , G03G9/087 , G03G9/10
CPC分类号： G03G15/0812 , G03G15/0921 , G03G2215/0609
摘要： PROBLEM TO BE SOLVED: To decrease image density unevenness, while realizing lower stress on a developer, in a region on the upstream side of a regulation position by a developer restricting member. SOLUTION: A magnet roller 147 includes mutually adjacent an N2 pole and an N3 pole of the same polarity, for generating a magnetic force for separating the developer from a developing sleeve 141, after it passes through a developing region, from a developing sleeve. A doctor auxiliary member 146b is fixed to a doctor blade 146, and a face 146b1 opposed to the magnetic pole of the doctor auxiliary member is disposed outside the outer circumference face of the developing sleeve on the upstream side, with respect to the doctor blade so that the face the N3 pole over a development effective width. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：为了降低图像浓度不均匀性，同时通过显影剂限制构件在调节位置的上游侧的区域中对显影剂实现较低的应力。磁性辊147包括相互相邻的N2极和相同极性的N3极，用于在显影剂从显影套筒141通过显影区域之后产生用于将显影剂从显影套筒141分离的磁力袖。医生辅助部件146b固定在刮刀146上，与刮刀辅助部件的磁极相对的面146b1相对于刮刀设置在上游侧的显影套筒的外周面的外侧面对N3杆超过开发有效宽度。版权所有（C）2010，JPO＆INPIT

9. 发明专利

JP2009217208A Magnet roller, developer carrier, developing device, process cartridge, and image forming apparatus 有权
标题翻译：磁铁滚筒，开发者承运人，开发设备，工艺盒和图像形成装置
公开(公告)号：JP2009217208A
公开(公告)日：2009-09-24
申请号：JP2008063707
申请日：2008-03-13
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： INNAMI TAKASHI , HIZUKA KYOTA , TAKANO YOSHIYUKI , HATTORI TADAAKI , KAMIYA NORIYUKI , OSAWA MASAYUKI , TERAJIMA MIEKO , SUZUKI TSUTOMU , ABE HIROYA
IPC分类号： G03G15/09 , H01F7/02
CPC分类号： G03G15/0921 , G03G2215/0634
摘要： PROBLEM TO BE SOLVED: To provide a highly durable magnet roller configured to prevent support parts of the magnet roller from damage, which results from shrink occurred in roots between the support parts and a groove formed in a body of the magnet roller or impact during assembly or the like. SOLUTION: The magnet roller 133 includes: a columnar magnetic field generating means 140; columnar support parts 143 disposed in contact with both ends of the magnetic field generating means 140, and having smaller diameter than the magnetic field generating means 140 disposed on the same axis as them; the groove 140c formed in the surface of the columnar magnetic field generating means 140, extending in the axial direction of the magnetic field generating means 140, and used for inserting a long magnetic body (not shown) in it. The columnar magnetic field generating means 143 is composed of a body 140a disposed in its central part, and reinforcement parts 140b disposed at both its ends. The groove 140c is formed along the entire body 140a of the magnetic field generating means 140. The reinforcement parts 140b are disposed between both ends of the groove 140c and both ends of the corresponding support parts. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种高度耐用的磁辊，其构造成防止磁体辊的支撑部件损坏，这是由于支撑部件和形成在磁体辊体内的凹槽之间的根部发生收缩，或组装时的冲击等。磁性辊133包括：柱状磁场产生装置140; 柱状支撑部143，与磁场产生装置140的两端接触，并且具有比设置在与它们相同的轴线上的磁场产生装置140的直径小的直径; 形成在柱状磁场产生装置140的表面上的槽140c，其在磁场产生装置140的轴向上延伸，并用于将长磁体（未示出）插入其中。柱状磁场产生装置143由设置在其中心部分的主体140a和设置在其两端的加强部分140b组成。槽140c沿着磁场产生装置140的整个主体140a形成。加强部分140b设置在槽140c的两端和相应的支撑部分的两端之间。版权所有（C）2009，JPO＆INPIT

10. 发明专利

JP2008225316A Developing device, process cartridge and image forming apparatus 审中-公开
标题翻译：开发装置，过程盒和图像形成装置
公开(公告)号：JP2008225316A
公开(公告)日：2008-09-25
申请号：JP2007066478
申请日：2007-03-15
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： HIZUKA KYOTA , HATTORI TADAAKI , TAKANO YOSHIYUKI , KAMIYA NORIYUKI , OSAWA MASAYUKI , TERAJIMA MIEKO , ABE HIROYA , INNAMI TAKASHI
IPC分类号： G03G15/08 , G03G15/09
CPC分类号： G03G15/0921 , G03G2215/0648
摘要： PROBLEM TO BE SOLVED: To provide a developing device which allows the distortion of a magnet roller to be reduced without enhancing the rigidity thereof, and also does not increase the rotating torques of a developing sleeve, thereby having high durability and providing an image of high image quality. SOLUTION: The developing device includes a developer carrier comprising: a magnetic field generating means; and a non-magnetic hollow body with the magnetic field generating means therein, configured to attract the developer to the outer surface thereof with the magnetic force of the magnetic field generating means, wherein distortion preventing magnetic field generating means to impart the magnetic force to the magnetic field generating means are disposed around the hollow body. The distortion preventing magnetic field generating means are configured to impart the magnetic force to cancel the distortion caused by the magnetic force applied to the magnetic field generating means from the magnetic materials disposed around the magnetic field generating means. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种能够在不增加磁性辊的刚性的同时减小磁辊的变形的显影装置，并且也不会增大显影套筒的旋转扭矩，从而具有高的耐久性并提供高图像质量的图像。解决方案：显影装置包括显影剂载体，包括：磁场产生装置; 以及其中具有磁场产生装置的非磁性中空体，其被构造成用磁场产生装置的磁力将显影剂吸引到其外表面，其中防变形磁场产生装置将磁力施加到磁场产生装置围绕中空体设置。防变形磁场产生装置被配置为使磁力抵消由设置在磁场发生装置周围的磁性材料施加到磁场产生装置的磁力引起的失真。版权所有（C）2008，JPO＆INPIT

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