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81. 发明专利

JP2004086213A Developing device 有权
公开(公告)号：JP2004086213A
公开(公告)日：2004-03-18
申请号：JP2003297536
申请日：2003-08-21
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： KOYAMA HAJIME , OKA SEIJI , TSUDA KIYONORI , AKIBA YASUSHI
IPC分类号： G03G15/09 , G03G15/08
摘要： PROBLEM TO BE SOLVED: To provide a developing device capable of preventing scumming and density unevenness, etc. on a picture by mixing and stirring developer in a developer housing part sufficiently without providing a plurality of toner supply regulating members like before. SOLUTION: In a developing device which takes toner in a toner hopper 8 into developer from a toner supplying port 8a by the transfer of developer, a projected part 7b which is projected to the surface side of a developing sleeve 4 from a wall surface part and also which is extended in a direction orthogonal to a developer conveyance direction by the developing sleeve 4 is formed at the wall surface part of the side of the developer sleeve 4 of a hood 7a of a developer housing case 7. COPYRIGHT: (C)2004,JPO

82. 发明专利

JP2004037997A Developing device and image forming apparatus 审中-公开
公开(公告)号：JP2004037997A
公开(公告)日：2004-02-05
申请号：JP2002197180
申请日：2002-07-05
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： ICHIKAWA TOMOYUKI , NAKAI HIROSHI , KOYAMA HAJIME , SHOJI HISAFUMI , TSUKAMOTO TAKEO , MATSUURA ATSUKA
IPC分类号： G03G15/00 , G03G15/08
摘要： PROBLEM TO BE SOLVED: To solve the problem that a texture of an image is dirtied during toner supply or overall spreadability is defective, even when using a developer having the fluidity reduced in accordance with deterioration with time in a developing device which has a carrying and agitating means for simultaneously carrying and agitating a two-component developer consisting of toner and carrier and is provided with a developer agitating and carrying chamber wherein the developer is carried and agitated while adding replenished toner and is used for development, and to provide an image forming device. SOLUTION: An ultrasonic oscillation means 12 for giving ultrasonic oscillation to the two-component developer containing the replenished toner is installed below and near an aperture part 9 for toner replenishment in a developer carrying direction. COPYRIGHT: (C)2004,JPO

83. 发明专利

JP2003084545A Electrifying device, electrifying method and image forming apparatus 审中-公开
标题翻译：电气设备，电气化方法和图像形成装置
公开(公告)号：JP2003084545A
公开(公告)日：2003-03-19
申请号：JP2001279796
申请日：2001-09-14
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： MIYAGUCHI YOICHIRO , EBI YUTAKA , KOYAMA HAJIME , TAKEMOTO TAKESHI
IPC分类号： G03G15/02 , G03G15/04 , G03G15/05 , G03G15/08 , G03G21/00 , G03G21/08 , G03G21/10
摘要： PROBLEM TO BE SOLVED: To enable an electrifying device to make contribution sufficiently from viewpoints of environment, electric safety and electric cost by enabling it to be non-ozone or to be extremely low ozone and to perform sharp low voltage electrification being lower than 400 V without changing important parts of a photoreceptor. SOLUTION: This electrifying device 3 has a light source 17 emitting light generating electric charges on an electric charge generating layer, a light passage electrode 16 through which light from the light source 17 can pass and a bias voltage applying means 18 applying a bias voltage to the light transparent electrode 16 and the electrifying device maintains the downstream side of a light irradiation area in the moving direction of a photoreceptor drum 2 to be in an electrified state by applying the bias voltage to the light transparent electrode 16 while irradiating the constant area of the photoreceptor drum 2 with the light from the light source 17. Then, the device forms an electrostatic latent image on the surface made to be in the electrified state by an exposing unit 4.
摘要翻译：要解决的问题：为了使电气化装置能够从环境，电气安全性和电力成本的角度充分发挥作用，使其成为非臭氧或极低的臭氧，并且执行低于400V的急剧的低电压通电而不改变感光体的重要部分。解决方案：该充电装置3具有在电荷产生层上产生电荷的光源17，来自光源17的光可以通过的光通过电极16以及施加偏置电压的偏置电压施加装置18 透光电极16和充电装置通过向光透射电极16施加偏压而将感光鼓2的移动方向上的光照射区域的下游侧保持在带电状态，同时照射感光鼓2具有来自光源17的光。然后，该装置通过曝光单元4在被制成电气化状态的表面上形成静电潜像。

84. 发明专利

JP2010015031A Image forming apparatus 有权
标题翻译：图像形成装置
公开(公告)号：JP2010015031A
公开(公告)日：2010-01-21
申请号：JP2008175778
申请日：2008-07-04
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： KOYAMA HAJIME , ECHIGO KATSUHIRO , TAMIYA TAKAHIRO
IPC分类号： G03G15/16
摘要： PROBLEM TO BE SOLVED: To provide an image forming apparatus which is capable of preventing the occurrence of transfer irregularities to a non-smooth transfer material and the occurrence of shock jitter when a transfer material enters a transfer material nip by using a roller transfer device superior in reducing cost and saving space. SOLUTION: In the image forming apparatus 100 which includes: an image carrier 1; an image forming means 23 forming an image on the image carrier 1; and at least one intermediate transfer body 2 or 101 to which the image formed on the image carrier 1 is transferred, and transfers the image on the image carrier 1 to the intermediate transfer body at least once and then, to the transfer material P, the final intermediate transfer body 101 being the intermediate transfer body to which the image on the image carrier 1 is transferred just before being transferred to the transfer material P is in the shape of a roller in which an elastic layer with an average porosity p and a thickness t including a compressible elastic member layer having a gap in a metal core is stacked and configured so that a deformation amount d in the radial direction of the final intermediate transfer body 101 at the center of a transfer nip portion where the final intermediate transfer body 101 comes into contact with the transfer material P may be (p×t)>d>0. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供一种图像形成装置，其能够防止当非转印材料发生转印不均匀时，以及当转印材料通过使用辊子进入转印材料辊隙时产生冲击抖动转移装置在降低成本和节省空间方面优异。解决方案：在图像形成装置100中，其包括：图像载体1; 在图像载体1上形成图像的图像形成装置23; 以及传送图像载体1上形成的图像的至少一个中间转印体2或101，并将图像载体1上的图像至少一次转印到中间转印体上，然后向转印材料P转印最终的中间转印体101是在转印到转印材料P之前将图像载体1上的图像转印到其上的中间转印体，其为具有平均孔隙率p和厚度的弹性层的辊的形状包括在金属芯中具有间隙的可压缩弹性构件层被堆叠并且构造成使得最终中间转印体101在最终中间转印体101的转印夹持部的中心处的径向方向上的变形量d 与转印材料P接触可以是（p×t）> d> 0。版权所有（C）2010，JPO＆INPIT

85. 发明专利

JP2010008968A Transfer device and image forming apparatus including the same 审中-公开
标题翻译：传输装置和图像形成装置，包括它们
公开(公告)号：JP2010008968A
公开(公告)日：2010-01-14
申请号：JP2008171638
申请日：2008-06-30
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： ECHIGO KATSUHIRO , KOYAMA HAJIME , TAMIYA TAKAHIRO
IPC分类号： G03G15/16
CPC分类号： G03G15/1605 , G03G2215/1623
摘要： PROBLEM TO BE SOLVED: To provide a transfer device that has improved reliability in recording medium conveyance while ensuring satisfactory transfer of toner images, primarily transferred to an intermediate transfer body, onto a recording medium.
SOLUTION: The transfer device 20 transfers toner images T, formed on image carriers 3 (Y, M, C, B), onto a recording medium P via the intermediate transfer body 21. A secondary transfer nip 40 in a secondary transfer section 15 for transferring the toner image from the intermediate transfer body to the recording medium is formed substantially straight from a plurality of belt members 26 including the intermediate transfer body. A secondary transfer bias is applied in a substantially central area of the secondary transfer nip 40.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供一种转印装置，其具有改善记录介质传送的可靠性，同时确保将主要转印到中间转印体的调色剂图像转印到记录介质上。
解决方案：转印装置20经由中间转印体21将形成在图像载体3（Y，M，C，B）上的调色剂图像T转印到记录介质P上。二次转印用于将调色剂图像从中间转印体转印到记录介质的部分15从包括中间转印体的多个带状构件26基本上直线地形成。二次转印偏压施加在二次转印辊隙40的基本中心区域。版权所有（C）2010，JPO＆INPIT

86. 发明专利

JP2009288536A Image forming apparatus 审中-公开
标题翻译：图像形成装置
公开(公告)号：JP2009288536A
公开(公告)日：2009-12-10
申请号：JP2008141260
申请日：2008-05-29
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： TAMIYA TAKAHIRO , ECHIGO KATSUHIRO , KOYAMA HAJIME
IPC分类号： G03G15/16
摘要： PROBLEM TO BE SOLVED: To provide an image forming apparatus for suppressing a toner image from failing in transfer to generate a void, that is, the occurrence of irregularities, when the toner image is secondarily transferred to a rugged recording material such as non-smooth paper and an envelope from a transfer belt.
SOLUTION: The transfer belt 31 is configured to include a base layer 91, an elastic layer 92 which is formed on the base layer 91 and has a plurality of cavities 95 formed thereon, a surface layer 93 formed on the elastic layer 92, and hard materials 94 loosely fitted to the cavities 95. The image forming apparatus is configured to include the transfer belt 31. When the transfer belt 31 is pressed toward a paper in secondarily transfer, the surface of the transfer belt 31 with the toner image is deformed into a rugged shape according to the movement of the hard materials 94 in the cavities 95 and the presence of the hard materials 94. The adhesion between the transfer belt 31 and the paper is improved and simultaneously, shear force is generated in the thickness direction of an aggregated toner layer, to destroy the aggregation.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：为了提供一种图像形成装置，用于抑制调色剂图像在转印时不发生空隙，即发生不规则，当调色剂图像被二次转印到粗糙的记录材料如不平滑的纸张和转印带的信封。解决方案：转印带31被构造成包括基底层91，形成在基底层91上并具有形成在其上的多个空腔95的弹性层92，形成在弹性层92上的表面层93 以及松散地装配到空腔95的硬质材料94.图像形成装置被构造成包括转印带31.当转印带31在二次转印中被朝向纸张按压时，带有调色剂图像的转印带31的表面根据硬质材料94在空腔95中的移动以及硬质材料94的存在而变形成粗糙的形状。转印带31和纸张之间的粘附性得到改善，同时在厚度上产生剪切力聚集的调色剂层的方向，以破坏聚集。版权所有（C）2010，JPO＆INPIT

87. 发明专利

JP2009053272A Image forming apparatus 审中-公开
标题翻译：图像形成装置
公开(公告)号：JP2009053272A
公开(公告)日：2009-03-12
申请号：JP2007217519
申请日：2007-08-23
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： TAMIYA TAKAHIRO , KOYAMA HAJIME , ECHIGO KATSUHIRO
IPC分类号： G03G15/16
摘要： PROBLEM TO BE SOLVED: To provide an image forming apparatus equipped with a constitution, capable of preventing destaticization at the end of an image forming area from becoming unstable, thereby preventing occurrence of a memory effect corresponding to accumulation of residual potential, preventing surface staining or abnormal-density image from occurring, and further, preventing deterioration due to current concentration at the end of a belt aiming at constitution equipped with an in-nip destaticizing mechanism. SOLUTION: The image forming apparatus includes an image carrier 2 on which a toner image is developed and which turns to a nip part; an intermediate transfer body 7, which has resistance reducing characteristics, when high voltage is applied thereto in a thickness direction; nip-forming means 7D and 7E which form a nip with the image carrier 2; a transfer means 9 which applies first bias to the intermediate transfer body 7 to transfer the toner image; and an in-nip destaticizing means 100 which applies second bias, having a different polarity from the first bias to the intermediate transfer body 7 in the nip to suppress peeling discharge, when the intermediate transfer body 7 comes out of the nip. Image forming width L SEF of the in-nip destaticizing means 100 is made wider than the image forming width Lt of the transfer means 9. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：解决的问题：为了提供一种具有能够防止图像形成区域末端的去静电变得不稳定的结构的图像形成装置，从而防止与残留电位的累积相对应的记忆效应的发生，防止表面染色或异常密度图像发生，并且进一步防止由于针对配置有胶印间静电机构的构造的带末端的电流集中而导致的劣化。图像形成装置包括：图像载体2，其上显影调色剂图像并转动到辊隙部分; 当在厚度方向上施加高电压时，具有电阻降低特性的中间转印体7; 与图像载体2形成辊隙的夹持形成装置7D和7E; 转印装置9，其向中间转印体7施加第一偏压以转印调色剂图像; 以及当中间转印体7从辊隙出来时，在辊隙中施加具有与第一偏压极性不同的第二偏压到中间转印体7的辊隙去静电装置100，以抑制剥离放电。使辊隙去静电装置100的成像宽度L SEF 比转印装置9的图像形成宽度Lt宽。版权所有（C）2009，JPO＆INPIT

88. 发明专利

JP2008304814A Image forming apparatus 审中-公开
标题翻译：图像形成装置
公开(公告)号：JP2008304814A
公开(公告)日：2008-12-18
申请号：JP2007153578
申请日：2007-06-11
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： TAMIYA TAKAHIRO , ECHIGO KATSUHIRO , KOYAMA HAJIME
IPC分类号： G03G15/16 , G03G15/00
摘要： PROBLEM TO BE SOLVED: To provide an image forming apparatus capable of suppressing the occurrence of discharge to restrain transfer dust from generating, by reducing the potential difference between an image carrier and a belt member, after eliminating electrostatic charges that remain on the belt member after transfer. SOLUTION: Charge of reverse polarity to regular charge polarity of toner remaining on an intermediate transfer belt 4 after transfer by an electrostatic eliminating brush 40 is eliminated, a bias of the same polarity as the regular charge polarity of toner is applied to the intermediate transfer belt 4 by a non-contact electric field impressing plate 111. The charge potential of the intermediate transfer belt 4 can thereby be brought close to the residual potential of a photoreceptor which is charged to the same polarity. Consequently, even if the residual potential of the photoreceptor 3 after transfer is high, the potential difference between the photoreceptor 3 and the intermediate transfer belt 4, after electrostatic elimination, can be reduced. The occurrence of discharge when separating the photoreceptor 3 from the intermediate transfer belt 4 can be suppressed. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：为了提供一种图像形成装置，其能够通过减少图像载体和带构件之间的电位差来消除放电后的静电电荷，从而抑制放电的发生，从而抑制转印灰尘的产生皮带成员转移后。解决方案：消除了通过静电消除刷40传送之后残留在中间转印带4上的调色剂的正常电荷极性的反向极性，将与调色剂的常规电荷极性相同极性的偏压施加到中间转印带4通过非接触电场施加板111.中间转印带4的电荷电位可以接近于被充电至相同极性的感光体的残留电位。因此，即使转印后的感光体3的残留电位高，可以减少静电消除后感光体3与中间转印带4之间的电位差。可以抑制当将感光体3与中间转印带4分离时的放电发生。版权所有（C）2009，JPO＆INPIT

89. 发明专利

JP2008299296A Image forming apparatus 审中-公开
标题翻译：图像形成装置
公开(公告)号：JP2008299296A
公开(公告)日：2008-12-11
申请号：JP2007148668
申请日：2007-06-04
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： TAMIYA TAKAHIRO , ECHIGO KATSUHIRO , KOYAMA HAJIME
IPC分类号： G03G15/16 , G03G21/14
摘要： PROBLEM TO BE SOLVED: To provide an image forming apparatus capable of suppressing generation of transfer dust by appropriately adjusting bias of a discharging electrode even when surface potential of an image carrier and transfer bias of a transfer means are changed by process control or the like. SOLUTION: The image density of a toner pattern more easily causing the transfer dust than a toner pattern for process control is detected by a P sensor 50, and bias applied to a discharging blade 40 when a result of detection is within a predetermined image density range is set as a proper value. Thus, even when the surface potential of a photoreceptor 3 and bias to be applied to a transfer roller 30 are changed by the process control or the like, charge remaining on an intermediate transfer belt 4 after transfer can be appropriately eliminated by the discharging blade 40. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：解决问题的方案：提供一种能够通过适当调整放电电极的偏压来抑制转印灰尘的产生的图像形成装置，即使图像载体的表面电位和转印装置的转印偏压通过过程控制而改变，类似。解决方案：通过P传感器50检测比用于处理控制的调色剂图案更容易引起转印灰尘的调色剂图案的图像浓度，当检测结果在预定的范围内时，施加到排出刮刀40的偏压图像浓度范围被设置为适当的值。因此，即使当通过处理控制等改变感光体3的表面电位和施加到转印辊30的偏压时，转印后残留在中间转印带4上的电荷也可以通过排出刮刀40适当地消除版权所有（C）2009，JPO＆INPIT

90. 发明专利

JP2007322515A Image forming apparatus and transfer device used therein 有权
标题翻译：图像形成装置及其使用的传送装置
公开(公告)号：JP2007322515A
公开(公告)日：2007-12-13
申请号：JP2006150046
申请日：2006-05-30
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： KOYAMA HAJIME , ECHIGO KATSUHIRO , TAMIYA TAKAHIRO
IPC分类号： G03G15/16 , G03G21/00 , G03G21/14
摘要： PROBLEM TO BE SOLVED: To provide an image forming apparatus restraining the occurrence of both of transfer dust and transfer irregularity. SOLUTION: The image forming apparatus is equipped with: photoreceptors 3Y, 3C, 3M and 3K carrying toner images on their surfaces; an endless intermediate transfer belt 41 forming primary transfer nips by abutting its front surface on the respective photoreceptors while it is stretched on a plurality of stretching rollers and endlessly moved; and primary transfer rollers 45Y, 45C, 45M and 45K applying transfer bias while abutting on the back-side areas of the primary transfer nips out of all the area on the back surface of the intermediate transfer belt 41. In the apparatus, the Y, C, M and K toner images on the photoreceptors 3Y, 3C, 3M and 3K are transferred to the front surface of the intermediate transfer belt 41 in the respective primary transfer nips. Charge eliminating electrode blades 51Y, 51C, 51M and 51K for eliminating the charge of the intermediate transfer belt 41 abut on the back-side areas of the primary transfer nips, and also damping members for restraining vibration are fixed on the respective charge eliminating electrode blades 51Y, 51C, 51M and 51K, respectively. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供抑制转印粉尘和转印不规则两者的发生的图像形成装置。解决方案：图像形成装置配备有：在其表面上承载调色剂图像的感光体3Y，3C，3M和3K; 无级中间转印带41，其在多个拉伸辊上被拉伸并且不断地移动时，通过在相应的感光体上将其前表面邻接而形成初次转印辊; 以及一次转印辊45Y，45C，45M和45K，在中间转印带41的背面的所有区域中的一次转印辊的背面区域上施加转印偏压。在该装置中，Y，感光体3Y，3C，3M和3K上的C，M和K调色剂图像被转印到相应的一次转印辊隙中的中间转印带41的前表面。用于消除中间转印带41的电荷的消除电极叶片51Y，51C，51M和51K与一次转印辊的背面区域抵接，并且用于抑制振动的阻尼构件固定在各个电荷消除电极刀片 51Y，51C，51M和51K。版权所有（C）2008，JPO＆INPIT

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