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11. 发明专利

JP2011242632A Belt device and image forming apparatus 有权
标题翻译：皮带装置和图像形成装置
公开(公告)号：JP2011242632A
公开(公告)日：2011-12-01
申请号：JP2010115139
申请日：2010-05-19
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： TERACHI HAJIME , KATO TSUTOMU , WATANABE YOHEI , YOSHIURA ARINOBU , WATANABE YOSHIHISA , NAKAMURA KEIGO , KATO YUJI
IPC分类号： G03G15/16 , G03G15/20 , G03G21/16
摘要： PROBLEM TO BE SOLVED: To provide a belt device and an image forming apparatus having an inexpensive structure which allow easy attaching and detaching of a belt member and prevention of occurrence of a scratch to the belt member during attaching and detaching the belt member.SOLUTION: Assist rollers 59a and 59b which are attachable and detachable are removed from a support member that supports the assist rollers 59a and 59b. While an intermediate transfer belt 20 is supported by the assist rollers 59a and 59b, the assist rollers 59a and 59b are moved to the front side. Then, the intermediate transfer belt 20 supported by the assist rollers 59a and 59b are extracted from a transfer unit 10 together with the assist rollers 59a and 59b.
摘要翻译：要解决的问题：提供一种具有便宜结构的带装置和图像形成装置，其允许容易地安装和拆卸带构件，并且在附接和拆卸带构件期间防止对带构件产生划痕。解决方案：从支撑辅助辊59a和59b的支撑构件移除可附接和可拆卸的辅助辊59a和59b。当中间转印带20由辅助辊59a和59b支撑时，辅助辊59a和59b向前侧移动。然后，由辅助辊59a和59b支撑的中间转印带20与辅助辊59a和59b一起从转印单元10中取出。版权所有（C）2012，JPO＆INPIT

12. 发明专利

JP2010204171A Image forming apparatus 有权
标题翻译：图像形成装置
公开(公告)号：JP2010204171A
公开(公告)日：2010-09-16
申请号：JP2009046697
申请日：2009-02-27
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： NAKAMURA KEIGO
IPC分类号： G03G15/00 , G03G15/08
摘要： PROBLEM TO BE SOLVED: To provide an image forming apparatus obtaining an excellent image by stably transferring toner to a recording paper, thereby preventing an abnormal image such as roughness. SOLUTION: The image forming apparatus has: image carriers 11Y to 11K carrying a latent image on a surface thereof; developing means 31Y to 31K provided with developer electrifying means 35Y to 35K electrifying developer and developer carriers 32Y to 32K carrying the developer and supplying the developer to the latent image, to develop the latent image; and transfer means 61Y to 61K and 80 transferring a toner image formed on the image carriers 11Y to 11K onto the recording paper P or an intermediate transfer body 50. A toner electrification amount range where a transfer rate is 90% or more is calculated from surface irregularity information discriminated by a paper discriminating means 90 for discriminating the surface irregularity of the recording paper P and when a toner electrification amount detected by an electrification amount detecting means 120 is out of the range, the developer electrifying means 35Y to 35K are controlled so that toner in the developer is in a prescribed toner electrification amount range. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：为了提供通过将调色剂稳定地转印到记录纸上获得优异图像的图像形成装置，从而防止诸如粗糙度的异常图像。解决方案：图像形成装置具有：在其表面上承载潜像的图像载体11Y至11K; 显影装置31Y至31K设置有显影剂带电装置35Y至35K，带电显影剂和显影剂载体32Y至32K承载显影剂并将显影剂供应给潜像，以显影潜像; 以及将形成在图像载体11Y至11K上的调色剂图像转印到记录纸P或中间转印体50上的转印装置61Y至61K和80.从表面计算转印率为90％以上的调色剂带电量范围通过用于识别记录纸P的表面不规则性的纸识别装置90来区分的不规则信息，并且当由电气量检测装置120检测到的调色剂带电量超出该范围时，显影剂通电装置35Y至35K被控制成使得显影剂中的调色剂处于规定的调色剂带电量范围。版权所有（C）2010，JPO＆INPIT

13. 发明专利

JP2010032896A Image forming device 审中-公开
标题翻译：图像形成装置
公开(公告)号：JP2010032896A
公开(公告)日：2010-02-12
申请号：JP2008196477
申请日：2008-07-30
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： NAKAMURA KEIGO , OGINO YASUHIKO
IPC分类号： G03G21/00 , G03G15/00 , G03G15/16
摘要： PROBLEM TO BE SOLVED: To provide a low-cost image forming device, capable of specifying with high accuracy the surface irregularities of a recording paper sheet over a range, allowing transfer in a stable manner onto the various kinds of recording paper sheets, and capable of preventing roughness from being generated on an image. SOLUTION: The image forming device includes an image carrier (transfer belt 50) for forming on a surface; a toner image obtained by depositing toner on a latent image; a transfer means (secondary transfer roller 80 and secondary transfer part opposed roller 73) for transferring the toner image on the image carrier to a transfer material (paper sheet P); a detecting means (surface characteristic detecting means 90) for detecting a surface roughness of the transfer material; and a lubricant applying means (device 45) for applying a lubricant onto the image carrier. The lubricant applying means has a lubricant applying amount control mechanism, and controls the application amount of the lubricant applied onto the image carrier, based on the surface roughness of the transfer material. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：为了提供一种低成本的图像形成装置，能够高精度地指定记录纸张的表面不规则性在一定范围内，从而能够稳定地转印到各种记录纸张上并且能够防止在图像上产生粗糙度。解决方案：图像形成装置包括用于在表面上形成的图像载体（转印带50）通过在潜像上沉积调色剂而获得的调色剂图像; 用于将图像载体上的调色剂图像转印到转印材料（纸张P）上的转印装置（二次转印辊80和二次转印部分相对辊73）; 用于检测转印材料的表面粗糙度的检测装置（表面特性检测装置90）以及用于在图像载体上施加润滑剂的润滑剂施加装置（装置45）。润滑剂施加装置具有润滑剂施加量控制机构，并且基于转印材料的表面粗糙度来控制施加到图像载体上的润滑剂的施加量。版权所有（C）2010，JPO＆INPIT

14. 发明专利

JP2015028669A 画像形成装置有权
标题翻译：图像形成装置
公开(公告)号：JP2015028669A
公开(公告)日：2015-02-12
申请号：JP2014228600
申请日：2014-11-11
申请人：株式会社リコー , Ricoh Co Ltd
发明人： NAKAMURA KEIGO , SHIMIZU YASUNOBU , OGIYAMA HIROMI , ISHII KOICHI , TANAKA SHINYA
IPC分类号： G03G15/16 , G03G21/14
摘要：【課題】直流成分と交流成分とを含む転写バイアスを用いる場合でも交流成分による部材劣化を抑制することを課題とする。【解決手段】表面移動する中間転写ベルト31と中間転写ベルト表面に対向配置される2次転写ローラ36との間の2次転写ニップに直流成分と交流成分とを含む2転写バイアスを印加する2次転写電源39を有し、その2次転写ニップを通過する記録紙Pに対し、中間転写ベルト表面に担持されるトナー像を2次転写バイアスの作用によって転写する画像形成装置において、中間転写ベルト表面移動中であって2次転写ニップを記録紙が通過していない非通紙期間中に、上記交流成分を印加しない又は上記交流成分のピークツウピーク電圧を画像形成時よりも小さくする交流成分変更期間が存在するように制御する制御部60を有する。【選択図】図1
摘要翻译：要解决的问题：即使在使用包括直流分量和交流分量的转印偏压的情况下，也可以降低由交流分量引起的部件的劣化。解决方案：图像形成装置具有二次转印电源39，二次转印偏压到二次转印压区，二次转印偏压包括直流成分和交流成分，二次转印辊隙形成在表面被移动的中间转印带31和与第二转印辊36的表面相对设置的二次转印辊36之间。中间转印带。图像形成装置被配置为使得保持在中间转印带表面的调色剂图像通过二次转印辊隙的作用被转印到通过二次转印辊隙的记录纸P上。图像形成装置具有控制部分60，该控制部分60进行控制，使得在中间转印带的表面移动期间以及在不通过二次转印夹持器的记录纸不通过期间，AC部件存在不施加AC分量或AC分量的峰峰值电压低于图像形成期间的变化周期。

15. 发明专利

JP2014170116A Image forming apparatus 审中-公开
标题翻译：图像形成装置
公开(公告)号：JP2014170116A
公开(公告)日：2014-09-18
申请号：JP2013041926
申请日：2013-03-04
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： TANAKA SHINYA , ISHII KOICHI , SHIMIZU YASUNOBU , MIZUTANI TAKEHIDE , NAKAMURA KEIGO
IPC分类号： G03G15/16
CPC分类号： G03G15/1675 , G03G15/1605
摘要： PROBLEM TO BE SOLVED: To suppress the occurrence of white spots, while maintaining a peak-to-peak voltage necessary for superposition transfer bias, even when the superposition transfer bias is used as transfer bias in transferring a toner image from an image carrier to a recording material.SOLUTION: An image forming apparatus comprises: an intermediate transfer belt 31 that has a moving surface carrying a toner image thereon; a nip forming roller 36 that is brought into contact with the surface of the intermediate transfer belt to form a secondary transfer nip N; and a power source 39 for applying, to the secondary transfer nip, superposition transfer bias in which an AC component is superposed on a DC component and the polarity changes over time, as secondary transfer bias for transferring the toner image on the intermediate transfer belt to recording paper P held in the secondary transfer nip. The image forming apparatus is configured to satisfy a condition that a phase difference between an AC voltage and an AC current output from the power source is 0.47 cycle or less.
摘要翻译：要解决的问题：为了抑制白点的发生，同时保持重叠转印偏压所需的峰 - 峰电压，即使当叠加转印偏压用作将调色剂图像从图像载体转印到转印偏压时的转印偏压记录材料。解决方案：图像形成装置包括：中间转印带31，其具有在其上承载调色剂图像的移动表面; 与中间转印带的表面接触以形成二次转印辊隙N的辊隙成形辊36; 以及电源39，用于向二次转印压区施加叠加转印偏压，其中AC分量叠加在DC分量上并且极性随时间而变化，作为将中间转印带上的调色剂图像转印到二次转印偏压上记录纸P保持在二次转印辊隙中。图像形成装置被配置为满足从电源输出的AC电压和AC电流之间的相位差为0.47周期以下的条件。

16. 发明专利

JP2014081608A Image forming apparatus and image forming method 有权
标题翻译：图像形成装置和图像形成方法
公开(公告)号：JP2014081608A
公开(公告)日：2014-05-08
申请号：JP2013095311
申请日：2013-04-30
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： IIMURA HARUO , AOKI SHINJI , YOSHII MASAKO , NAKAMURA KEIGO
IPC分类号： G03G15/01 , G03G15/16
摘要： PROBLEM TO BE SOLVED: To provide an image forming apparatus capable of providing, even when using a recording sheet having a number of concaves and convexes on the surface, sufficient image density in the concave parts of the sheet surface, and suppressing blur on edges of character images and line images.SOLUTION: A secondary transfer power source 82 is configured to output a secondary transfer bias capable of forming, in a secondary transfer nip, an alternating electric field that alternately generates an electric field to give an electrostatic force directed from an intermediate transfer belt 21 side to a secondary transfer roller 26 side to a toner, and an electric field to give an electrostatic force directed from the secondary transfer roller 26 side to the belt side to the toner. An image forming unit 1T is provided to form a transparent toner layer to an area on the surface of the belt before approaching the secondary transfer nip and to which a plurality of colors of toner Y, M, C, and K forming a Y, M, C, K toner image are not adhered.
摘要翻译：要解决的问题：为了提供一种图像形成装置，即使当使用表面上具有多个凹凸的记录片材时，也能够提供在片材表面的凹部中的足够的图像密度，并且抑制边缘上的模糊字符图像和行图像。解决方案：二次转印电源82被配置为输出二次转印偏压，其能够在二次转印压区中形成交替产生电场的交变电场，以产生从中间转印带21侧到二次转印辊26侧到调色剂，以及电场，以产生从二次转印辊26侧向带侧指向调色剂的静电力。提供图像形成单元1T以在接近二次转印夹持部之前在带的表面上形成透明调色剂层，并且多个颜色的调色剂Y，M，C和K形成Y，M C，K调色剂图像不粘附。

17. 发明专利

JP2013231936A Image forming apparatus 有权
标题翻译：图像形成装置
公开(公告)号：JP2013231936A
公开(公告)日：2013-11-14
申请号：JP2012179267
申请日：2012-08-13
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： SHIMIZU YASUNOBU , OGIYAMA HIROMI , ISHII KOICHI , TANAKA SHINYA , NAKAMURA KEIGO
IPC分类号： G03G15/16 , G03G15/00
CPC分类号： G03G15/0189 , G03G15/1605 , G03G15/1675
摘要： PROBLEM TO BE SOLVED: To provide optimal conditions for transfer bias correction of a DC component and an AC component, respectively, and prevent the occurrence of density unevenness and discharge images associated with correction of transfer bias.SOLUTION: In an image forming apparatus having a DC transfer mode using DC bias and a superimposing transfer mode using superimposing bias, the superimposing bias has a waveform in which polarity that acts in a direction to transfer images and reverse polarity thereto are switched alternately, and is output by multiplying respective standard values of a DC component and an AC component by individual correction rate.
摘要翻译：要解决的问题：分别提供用于DC分量和AC分量的转印偏差校正的最佳条件，并且防止发生与转印偏压校正相关的浓度不均匀和放电图像。解决方案：在具有使用DC偏压的DC传输模式和使用叠加偏置的叠加传输模式，叠加偏置具有交替地切换传输图像和反向极性的方向上作用的极性的波形，并且通过将相应的标准值 DC分量和AC分量。

18. 发明专利

JP2013178451A Transfer device and image formation apparatus 有权
标题翻译：转移装置和图像形成装置
公开(公告)号：JP2013178451A
公开(公告)日：2013-09-09
申请号：JP2012102413
申请日：2012-04-27
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： MINBU RYUICHI , TANAKA SHINYA , ISHII KOICHI , SHIMIZU YASUNOBU , NAKAMURA KEIGO , OGIYAMA HIROMI , SENGOKU KENJI
IPC分类号： G03G15/16
CPC分类号： G03G15/168
摘要： PROBLEM TO BE SOLVED: To provide a transfer device capable of improving a toner transfer rate onto a recess on a surface of recording paper, of uniformly transferring a toner even onto recording paper having larger irregularity, and of using a transfer member for a long period of time.SOLUTION: A transfer device 50 includes: a rotatable transfer member 56 for making contact with an image carrier 51 to form a transfer nip part between the image carrier 51 and the rotatable transfer member 56; a counter member 53 for making contact with the transfer member 56 through the image carrier 51; and transfer bias application means for transferring, by applying transfer bias, a toner image on the image carrier 51 at the transfer nip part, onto a recording material. The transfer bias application means applies bias superimposing an AC component and a DC component, onto the transfer member 56 or the counter member 53. The transfer device further includes application means 5 for applying a protective agent 62 on a surface of the transfer member 56.
摘要翻译：要解决的问题：提供一种转印装置，其能够将调色剂转印率提高到记录纸表面上的凹部上，将调色剂均匀地转印到具有较大不规则性的记录纸上，以及长时间使用转印部件传送装置50包括：用于与图像载体51接触以在图像载体51和可旋转转印部件56之间形成转印夹持部的可旋转转印部件56; 通过图像载体51与转印构件56接触的计数构件53; 以及转印偏压施加装置，用于通过将转印偏压施加到转印辊隙部分上的图像载体51上的调色剂图像转印到记录材料上。转印偏压施加装置将叠加交流分量和直流分量的偏压施加到转印部件56或计数部件53上。转印装置还包括施加装置5，用于在转印部件56的表面上施加保护剂62。

19. 发明专利

JP2013164578A Image formation apparatus 有权
标题翻译：图像形成装置
公开(公告)号：JP2013164578A
公开(公告)日：2013-08-22
申请号：JP2012247794
申请日：2012-11-09
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： TANAKA SHINYA , ISHII KOICHI , OGIYAMA HIROMI , SHIMIZU YASUNOBU , NAKAMURA KEIGO
IPC分类号： G03G15/16 , G03G15/08 , G03G21/00 , G03G21/10
CPC分类号： G03G15/1695 , G03G15/0189 , G03G15/161 , G03G15/168 , G03G21/0094
摘要： PROBLEM TO BE SOLVED: To provide an image formation apparatus that can obtain an image of stable density and improve cleaning properties of an intermediate transfer body while minimizing cost increase.SOLUTION: The image formation apparatus comprises: image carriers 2 (Y, M, C and K) carrying an electrostatic latent image; development means 8 (Y, M, C and K) for developing the electrostatic latent image with toner; an intermediate transfer body 31 carrying the toner image by transferring the toner image developed by the development means once or plural times; a secondary transfer member 36 contacting a surface of the intermediate transfer body on which the toner image is carried to form a transfer nip N; a power supply 39 outputting a voltage for transferring the toner image on the intermediate transfer body to a recording material P sandwiched in the transfer nip; and protective agent supply means 20 (Y, M, C and K) for applying or attaching protective agent 22 (Y, M, C and K) at least containing both of zinc stearate and boron nitride onto the surface of the image carriers. When the toner image on the intermediate transfer body is transferred to the recording material, the voltage is outputted while alternately switching between a voltage in a transfer direction of transferring the toner image from an intermediate transfer body side to a recording material side and a voltage having a polarity opposite to that of the voltage in the transfer direction.
摘要翻译：要解决的问题：提供一种可以获得稳定密度的图像并改善中间转印体的清洁性能同时最小化成本增加的图像形成装置。解决方案：图像形成装置包括：图像载体2（Y，M，C 和K）携带静电潜像; 用调色剂显影静电潜像的显影装置8（Y，M，C和K）通过转印由显影装置显影的调色剂图像一次或多次来承载调色剂图像的中间转印体31; 与传送调色剂图像的中间转印体的表面接触形成转印压区N的二次转印部件36; 输出用于将中间转印体上的调色剂图像转印到夹在转印辊隙中的记录材料P的电源39; 以及用于将至少含有硬脂酸锌和氮化硼两者的保护剂22（Y，M，C和K）施加或附着在图像载体的表面上的保护剂供给装置20（Y，M，C和K）。当将中间转印体上的调色剂图像转印到记录材料上时，输出电压，同时在从中间转印体侧向记录材料侧转印调色剂图像的转印方向上的电压之间交替切换，并且具有与传送方向上的电压相反的极性。

20. 发明专利

JP2013125053A Image forming apparatus 有权
标题翻译：图像形成装置
公开(公告)号：JP2013125053A
公开(公告)日：2013-06-24
申请号：JP2011272106
申请日：2011-12-13
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： AOKI SHINJI , IIMURA HARUO , OGINO YASUHIKO , KASAI TADASHI , SUGIMOTO NAOMI , TANAKA SHINYA , NAKAMURA KEIGO
IPC分类号： G03G15/16 , G03G15/01
CPC分类号： G03G15/0131 , G03G15/0189 , G03G15/1675 , G03G2215/0129
摘要： PROBLEM TO BE SOLVED: To suppress the occurrence of unnecessary transfer dust while suppressing the occurrence of white streaks around line parts.SOLUTION: In a configuration in which T, Y, M, C, K toner images formed on photoreceptors 2T, Y, M, C, K are overlapped on an intermediate transfer belt 21 and primary transferred to obtain a multicolor toner image before secondary transferring the multicolor toner image to a recording sheet through a secondary transfer nip formed by the intermediate transfer belt 21 and a secondary transfer roller 26, a secondary transfer power source 82 is configured to perform processing for outputting superimposed bias when a multicolor toner image including a T toner image is secondary transferred, whereas outputting DC bias when a toner image not including a T toner image is secondary transferred.
摘要翻译：要解决的问题：抑制不必要的转印粉尘的发生，同时抑制线部分周围的白色条纹的发生。解决方案：在其中在感光体2T，Y，M，C，K上形成的T，Y，M，C，K调色剂图像重叠在中间转印带21上并进行初次转印以获得多色调色剂图像在通过由中间转印带21和二次转印辊26形成的二次转印辊隙将多色调色剂图像二次转印到记录片材之前，二次转印电源82被配置为当多色调色剂图像包括T调色剂图像被二次转印，而当不包括T调色剂图像的调色剂图像被二次转印时，输出DC偏压。版权所有（C）2013，JPO＆INPIT

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