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1. 发明专利

JP2007047640A Developing device 有权
标题翻译：开发设备
公开(公告)号：JP2007047640A
公开(公告)日：2007-02-22
申请号：JP2005234122
申请日：2005-08-12
申请人： Ricoh Printing Systems Ltd , リコープリンティングシステムズ株式会社
发明人： TSUJITA AKIO , KUBO TATSUYA
IPC分类号： G03G15/08
摘要： PROBLEM TO BE SOLVED: To provide a developing device (102) which achieves stable conveyance of developer (4) and eliminates print defects such as image density irregularities when pole-on bristle cutting development in which a regulating member (3) for the developer (4) is arranged so as to face magnetic poles is used in a fountain type developing device, and even when the pole-on bristle cutting development is used in a full color printer in which a high developer conveying property is required and a printer having a high printing speed. SOLUTION: In the developing device, the pole-on bristle cutting development is configured so that the regulating member (3) faces the magnets of a pair of adjacent developing rolls (1 and 2), the contact surface (X1) of the regulating member (3) with the developer (4) is placed to be inclined toward the side of an image carrier (101) at an angle of 5 to 20 degrees with respect to a vertical direction, and the surface roughness Rmax of the contact surface (X1) is 20μm or less or the static friction coefficient of the contact surface (X1) is 0.2 or less. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种能够实现显影剂（4）的稳定输送的显影装置（102），并且消除了当直线刷毛切割显影时的打印缺陷，例如图像浓度不规则，其中用于显影剂（4）被布置为在喷墨式显影装置中使用面对磁极，并且即使在需要高显影剂输送性能的全色打印机中使用极点刷毛切割开发，并且具有高打印速度的打印机。解决方案：在显影装置中，极点刷毛切割显影被构造成使得调节构件（3）面对一对相邻显影辊（1和2）的磁体，接触表面（X1）具有显影剂（4）的调节构件（3）被放置成相对于垂直方向以5至20度的角度朝向图像载体（101）侧倾斜，并且接触的表面粗糙度Rmax 表面（X1）为20μm以下或接触面（X1）的静摩擦系数为0.2以下。版权所有（C）2007，JPO＆INPIT

2. 发明专利

JP2006267891A 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：JP2006267891A
公开(公告)日：2006-10-05
申请号：JP2005089141
申请日：2005-03-25
申请人： Ricoh Printing Systems Ltd , リコープリンティングシステムズ株式会社
发明人： TSUJITA AKIO , KATAOKA KAORU , KUBO TATSUYA
IPC分类号： G03G15/08 , G03G15/09
CPC分类号： G03G15/0812 , G03G15/0921 , G03G2215/0648
摘要： PROBLEM TO BE SOLVED: To realize uniform conveyance of developer and to prevent poor printing such as image density unevenness even when a developing device is used for a full color printer for which high printing density is required or a printer with fast print speed by using the on-pole bristle cutting development in which a doctor blade which is a restriction member of developer is arranged so as to face a magnetic pole to a fountain type developing device. SOLUTION: In the fountain type developing device of two-component developer system in which at least one pair of a plurality of development rolls are arranged by making development rolls which rotate in the reverse direction and the same direction of the direction of rotation of an image carrier adjacent to each other and providing the restriction member for restricting an amount of conveyance of the developer between the paired development rolls, development is the on-pole bristle cutting development opposite to magnets of two development rolls of which the restriction members are adjacent to each other and polarity of magnet of the development rolls opposite to a doctor blade part is made into the opposite polarity. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：即使当显影装置用于需要高印刷密度的全色打印机或具有快速打印速度的打印机时，即使使用显影装置也能实现显影剂的均匀输送并且防止诸如图像浓度不均匀性的差的打印通过使用作为显影剂的限制构件的刮刀布置成面对磁极到喷泉型显影装置的杆上刷毛切割显影。解决方案：在双组分显影剂系统的喷泉型显影装置中，其中至少一对多个显影辊通过制造沿相反方向旋转的显影辊和旋转方向相同的方向来布置相邻的图像载体，并且提供用于限制成对的显影辊之间的显影剂的输送量的限制构件，显影是与两个显影辊的磁体相反的磁极刷毛切割显影，其中限制构件是彼此相邻并且与刮刀部相对的显影辊的磁体的极性被制成相反的极性。版权所有（C）2007，JPO＆INPIT

3. 发明专利

JP2006023381A Corona discharge device and image forming apparatus provided with the same 有权
标题翻译： CORONA放电装置和图像形成装置
公开(公告)号：JP2006023381A
公开(公告)日：2006-01-26
申请号：JP2004199483
申请日：2004-07-06
申请人： Ricoh Printing Systems Ltd , リコープリンティングシステムズ株式会社
发明人： KUBO TATSUYA , OTOME YUKIO , TSUJITA AKIO
IPC分类号： G03G15/02 , G03G15/16 , G03G21/06 , H01T19/04 , H05F3/04
摘要： PROBLEM TO BE SOLVED: To provide a corona discharge device, from which foreign substances sticking to a sawtooth electrode can be removed using a simple cleaning mechanism and with which proper images are obtained. SOLUTION: In the corona discharge device with the sawtooth electrode 11, having a large number of sawtooth parts 111, the cleaning mechanism 9 provided with an elastic cleaning member 91; a holding member 92 which holds the cleaning member 91, in such a way that a top of the cleaning member 91 protrudes; and a moving means 93 to move the holding member 92 along a longitudinal direction of the sawtooth electrode 11 is disposed near the sawtooth electrode 11, in such a way that the tip of the cleaning member 91 is inserted between the sawtooth parts 111 and 111, and the holding member 92 is moved by the moving means 93 along the longitudinal direction of the sawtooth electrode 11. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种电晕放电装置，可以使用简单的清洁机构从而从其中去除粘附到锯齿电极的异物并获得适当的图像。解决方案：在具有锯齿电极11的电晕放电装置中，具有大量锯齿部件111，清洁机构9设置有弹性清洁部件91; 保持构件92，其保持清洁构件91，使得清洁构件91的顶部突出; 并且沿着锯齿电极11的长度方向移动保持构件92的移动装置93设置在锯齿电极11附近，使得清洁构件91的末端插入在锯齿部111和111之间，并且保持构件92沿着锯齿电极11的长度方向被移动装置93移动。版权所有（C）2006，JPO＆NCIPI

4. 发明专利

JP2005227592A Belt photoreceptor driving mechanism and printer 审中-公开
标题翻译：皮带驱动机构和打印机
公开(公告)号：JP2005227592A
公开(公告)日：2005-08-25
申请号：JP2004037008
申请日：2004-02-13
申请人： Ricoh Printing Systems Ltd , リコープリンティングシステムズ株式会社
发明人： TSUJITA AKIO , YAMAZAKI AKIHIKO , KUBO TATSUYA
IPC分类号： G03G21/00 , F16C13/00 , G03G15/00
摘要： PROBLEM TO BE SOLVED: To prevent occurrence of image defects due to faulty transfer even when foreign substances such as toner, paper dust and carrier enter the gap between a belt photoreceptor and a roller which drives or supports the belt photoreceptor. SOLUTION: In a belt photoreceptor driving mechanism comprising a driving roller disposed on the inner side of a belt photoreceptor to circularly drive the belt photoreceptor; a driven roller which rotates with circular movement of the belt photoreceptor in a following manner; and a tension roller which applies tension to the belt photoreceptor and rotates with circular movement of the belt photoreceptor in a following manner, a surface roughness Rmax of the driving or driven roller located in a transfer position is set to 50S-200S. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：即使当诸如调色剂，纸粉和载体的异物进入带式感光体和驱动或支撑带感光体的辊之间的间隙时，为了防止由于错误转印而导致的图像缺陷的发生。解决方案：在带式感光体驱动机构中，包括设置在带感光体的内侧的驱动辊，以循环驱动带感光体; 以下述方式以带状感光体的圆周运动旋转的从动辊; 以及张紧辊，其对带感光体施加张力，并且以带状感光体的圆周运动旋转，位于转印位置的驱动辊或从动辊的表面粗糙度Rmax被设定为50S-200S。版权所有（C）2005，JPO＆NCIPI

5. 发明专利

JP2007047639A Developing device 有权
标题翻译：开发设备
公开(公告)号：JP2007047639A
公开(公告)日：2007-02-22
申请号：JP2005234121
申请日：2005-08-12
申请人： Ricoh Printing Systems Ltd , リコープリンティングシステムズ株式会社
发明人： KUBO TATSUYA , TSUJITA AKIO
IPC分类号： G03G15/08
摘要： PROBLEM TO BE SOLVED: To stabilize conveyance of developer (13) and to prevent image defects due to flying-off of the developer even when on-pole bristle cutting development capable of regulating the conveying amount of the developer (13) small even if a doctor gap is comparatively wide is used in a fountain type developing device frequently used in a printer having a high printing speed. SOLUTION: In the developing device, the magnetic poles of a reverse rotation developing roll (1) and a forward rotation developing roll (2) which are opposed to a regulating member (4) have polarities different from each other, and in only either of the reverse rotation developing roll (1) and the forward rotation roll (2), at least one conveying magnetic pole is placed between the magnetic pole facing the regulating member (4) and the magnetic pole facing an image carrier (101). COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：为了稳定显影剂（13）的输送，并且即使即使能够调节显影剂（13）的输送量的直接刷毛切割显影较小，也能够防止由于显影剂飞散造成的图像缺陷即使在具有较高打印速度的打印机中经常使用的喷泉型显影装置中也使用了较大的刮刀间隙。解决方案：在显影装置中，与调节构件（4）相对的反转显影辊（1）和正转显影辊（2）的磁极具有彼此不同的极性，并且在只有逆转显影辊（1）和正转辊（2）中的任一个，至少一个传送磁极被放置在面对调节件（4）的磁极和面向图像载体（101）的磁极之间，。版权所有（C）2007，JPO＆INPIT

6. 发明专利

JP2006235376A Development device and its control method, and image forming apparatus 审中-公开
标题翻译：开发设备及其控制方法和图像形成装置
公开(公告)号：JP2006235376A
公开(公告)日：2006-09-07
申请号：JP2005051684
申请日：2005-02-25
申请人： Ricoh Printing Systems Ltd , リコープリンティングシステムズ株式会社
发明人： KUBO TATSUYA , TSUJITA AKIO , OTOME YUKIO , MIKI EIJI
IPC分类号： G03G15/08 , G03G21/14
摘要： PROBLEM TO BE SOLVED: To extend replacement cycles of a developer by reducing stress imparted to the developer. SOLUTION: An image forming apparatus 10 supplies toner by a development device 20 when an electrostatic latent image is formed by irradiating a photoreceptor belt 12 with image light from an image writing light source 18 to develop the electrostatic latent image as a toner image. The controller 40 of the development device 20 stores history data of a frequency of toner replenishment in sequence, extracts the total value of a frequency of toner replenishment carried out within a prescribed time from the stored history data, and performs control so that the rotational frequency of a screw member 64 becomes a rotational frequency corresponding to the frequency of toner replenishment. Consequently, the screw member 64 can be rotated at a rotational frequency corresponding to the amount of toner replenishment, so when the consumption of a developer decreases as printing density decreases, the rotational frequency of the screw member 64 decreases to reduce stress to the developer 54, thereby extending replacement cycles of the developer 54. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：通过减少赋予显影剂的应力来延长显影剂的更换周期。解决方案：当通过用来自图像写入光源18的图像光照射感光带12以形成静电潜像作为调色剂图像形成静电潜像时，图像形成装置10通过显影装置20供应调色剂。显影装置20的控制器40依次存储调色剂补充频率的历史数据，从存储的历史数据中提取在规定时间内进行的调色剂补充的频率的总值，并进行控制，使得旋转频率螺杆构件64变为对应于调色剂补充频率的旋转频率。因此，可以以对应于调色剂补充量的旋转频率旋转螺杆构件64，因此当显影剂的消耗随着印刷密度降低而降低时，螺杆构件64的旋转频率减小，以减小对显影剂54的应力从而延长了显影剂54的更换周期。版权所有（C）2006，JPO＆NCIPI

7. 发明专利

JP2005208272A Electrifying apparatus and image forming apparatus using it 有权
标题翻译：使用它的电气设备和图像形成装置
公开(公告)号：JP2005208272A
公开(公告)日：2005-08-04
申请号：JP2004013858
申请日：2004-01-22
申请人： Ricoh Printing Systems Ltd , リコープリンティングシステムズ株式会社
发明人： KUBO TATSUYA , TSUJITA AKIO , OTOME YUKIO
IPC分类号： G03G15/02 , G05F5/00
CPC分类号： G05F5/00
摘要： PROBLEM TO BE SOLVED: To reduce dust, toner, and paper dust attached to blade tips of a saw-tooth electrodes in an electrifying apparatus using corona discharge.
SOLUTION: A first saw-tooth electrode part positioned on an upstream part in the moving direction of a photoreceptor and a second saw-tooth electrode part positioned in a mid-stream part and a third saw-tooth electrode part positioned in a downstream part are provided. The current per unit length fed to the second saw-tooth electrode part is made to be in a range of 1.3 to 3 times the current per unit length fed to the first and the third saw-tooth electrode parts. At the same time, the current per unit length in the first and the third saw-tooth parts are constituted to be equal.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：为了减少使用电晕放电的带电装置中附着于锯齿电极的叶片尖端的灰尘，调色剂和纸屑。解决方案：位于感光体的移动方向的上游部分上的第一锯齿电极部分和位于中流部分中的第二锯齿电极部分和位于感光体的移动方向上的第三锯齿电极部分提供下游部分。馈送到第二锯齿电极部分的每单位长度的电流被制成在馈送到第一和第三锯齿电极部分的每单位长度的电流的1.3到3倍的范围内。同时，第一和第三锯齿部分中的每单位长度的电流相等。版权所有（C）2005，JPO＆NCIPI

8. 发明专利

JP2005084211A Electrifying device 有权
标题翻译：电气设备
公开(公告)号：JP2005084211A
公开(公告)日：2005-03-31
申请号：JP2003314022
申请日：2003-09-05
申请人： Ricoh Printing Systems Ltd , リコープリンティングシステムズ株式会社
发明人： KUBO TATSUYA , OTOME YUKIO , MABUCHI HIROYUKI , TSUJITA AKIO
IPC分类号： G03G15/02 , H01T19/04
摘要： PROBLEM TO BE SOLVED: To solve the problems that the constitution of a conventional mechanism for cleaning a saw-toothed electrode is complicated because a cleaning roller is rotated and also that a foreign matter removed in a first movement adheres to the saw-toothed electrode again in a return movement.
SOLUTION: A pair of thin plate type cleaning members whose Young's modulus is equal to or above 50 kg/mm
2 and within 200 kg/mm
2 and whose thickness is equal to or above 0.1 mm and within 0.3 mm are installed as the cleaning mechanism for the saw-toothed electrode having a moving means so that they come into contact with both the electrode part and plate part of the saw-toothed electrode and the distance between a cleaning holding member holding the thin plate type cleaning members and the side surface of the saw-toothed electrode is kept equal to or above 2 mm. The working range of the thin plate type cleaning members is made longer than the image forming range of a photoreceptor, and a projection is provided at the end of the saw-toothed electrode or a projection is provided on an insulating electrode holding member holding the saw-toothed electrode at both ends so as to interpose the saw-toothed electrode.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：解决的问题为了解决常规清洁锯齿电极机构的结构复杂的问题，因为清洁辊旋转并且第一运动中除去的异物附着在锯齿状电极上，齿形电极再次返回。解决方案：一种薄板型清洁件，其杨氏模量等于或大于50kg / mm 2 / SP>，在200kg / mm 2范围内，其厚度作为用于具有移动装置的锯齿电极的清洁机构，其等于或大于0.1mm并且在0.3mm内被安装，使得它们与锯齿电极的电极部分和板部分接触，并且距离在保持薄板型清洁部件的清洁保持部件与锯齿电极的侧面之间保持等于或大于2mm。使薄板型清洁部件的工作范围比感光体的图像形成范围长，并且在锯齿电极的端部设置突起，或者在保持锯的绝缘电极保持部件上设置突起在两端形成电极，以便插入锯齿电极。版权所有（C）2005，JPO＆NCIPI

9. 发明专利

JP2005084210A Electrifying device 审中-公开
标题翻译：电气设备
公开(公告)号：JP2005084210A
公开(公告)日：2005-03-31
申请号：JP2003314021
申请日：2003-09-05
申请人： Ricoh Printing Systems Ltd , リコープリンティングシステムズ株式会社
发明人： KUBO TATSUYA , MABUCHI HIROYUKI , TSUJITA AKIO
IPC分类号： G03G15/02 , H01T19/04
CPC分类号： G03G15/0233 , G03G15/0266 , G03G15/0291 , G03G2215/028
摘要： PROBLEM TO BE SOLVED: To provide an electrifying device using a sawtoothed electrode and capable of making the potential by electrification of a photoreceptor in a shaft direction uniform by uniformly generating corona discharge in each sawtooth.
SOLUTION: A scorotron type electrifying device is equipped with a shielding case having an aperture part directed toward the photoreceptor, the sawtoothed electrode for generating the corona discharge and a grid having a plurality of grid wires disposed at a regular interval from the sawtoothed electrode. At least one side surface of the shielding case is installed adjacently to one sawtoothed electrode, and the relationship between a current It made to flow in the sawtoothed electrode and a current Is flowing in the shielding case is set to 1/4≤Is/It≤1/2, the interval between the tops of the sawteeth is equal to or above 1 mm and within 3 mm, and the relationship between the potential by electrification V0 of the photoreceptor and voltage Vg applied to the grid is set to -50≤|V0|-|Vg|≤50 (V).
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：为了提供使用锯齿电极的带电装置，并且能够通过在每个锯齿中均匀地产生电晕放电，使轴方向上的感光体通电而使电位均匀。光栅型充电装置配备有具有朝向感光体的开口部的屏蔽壳体，用于产生电晕放电的锯齿电极和具有从锯齿状的规则间隔配置的多个格栅线的格栅电极。屏蔽壳体的至少一个侧表面与一个锯齿电极相邻地安装，并且在锯齿电极中流动的电流和在屏蔽壳体中流动的电流Is之间的关系被设置为1 /4≤Is/ It ≤1/ 2，锯齿的顶部之间的间隔等于或大于1mm并且在3mm内，并且感光体的电气化电位V0与施加到电网的电压Vg之间的关系设定为-50≤ ¾V0¾-¾Vg¾≤50（V）。版权所有（C）2005，JPO＆NCIPI

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