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1. 发明专利

JP2010002624A Charging apparatus and image forming apparatus 审中-公开
标题翻译：充电装置和图像形成装置
公开(公告)号：JP2010002624A
公开(公告)日：2010-01-07
申请号：JP2008160733
申请日：2008-06-19
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： WAKABAYASHI ISAMU , SAKAUCHI KAZUNORI , TAKENAKA YASUTA
IPC分类号： G03G15/02
摘要： PROBLEM TO BE SOLVED: To provide a charging means where the applied voltage to be required is made lower than a discharging apparatus using discharge wire, and further, the variation of the applied current made to flow into each discharge electrode is suppressed, so as to reduce the unevenness in charging on an image carrier.
SOLUTION: In a charging apparatus provided with a charging means comprising a plurality of discharge electrodes and a single electrode holding member holding the plurality of discharge electrodes, the plurality of discharge electrodes are arranged at intervals each other in the longitudinal direction of the single electrode holding member, wiring for respectively applying a discharge bias to the plurality of discharge electrodes is connected to the positions corresponding to the plurality of discharge electrodes in a longitudinal direction of the single electrode holding member, respectively, the single electrode holding member is provided with: conducting regions where the plurality of discharge electrodes and the wiring corresponding to the plurality of discharge electrodes are electrically connected; and resisting regions having resistance higher than that of the conducting regions, and the resisting regions are provided between the adjoining plurality of discharge electrodes, respectively.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：解决的问题：为了提供使所需的施加电压低于使用放电线的放电装置的充电装置，并且抑制流入各放电电极的施加电流的变化被抑制，以减少图像载体上的充电不均匀性。解决方案：在具有包括多个放电电极的充电装置和保持多个放电电极的单电极保持部件的充电装置中，多个放电电极沿着该多个放电电极的长度方向彼此间隔地布置单电极保持构件，分别向多个放电电极施加放电偏压的布线分别在单电极保持构件的纵向方向上连接到与多个放电电极相对应的位置，单电极保持构件具有：多个放电电极和与多个放电电极对应的布线电连接的导电区域; 以及具有比导电区域更高的电阻的电阻区域，并且抵抗区域分别设置在相邻的多个放电电极之间。版权所有（C）2010，JPO＆INPIT

2. 发明专利

JP2014088253A Recording medium thickness detection apparatus, image formation apparatus, recording medium thickness detection method and program 有权
标题翻译：记录中厚度检测装置，图像形成装置，记录中厚度检测方法和程序
公开(公告)号：JP2014088253A
公开(公告)日：2014-05-15
申请号：JP2012240241
申请日：2012-10-31
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： OKAMURA HISASHI , NISHIZAKI SHINGO , OZAKI HIROSUKE , IKEDA YUJI , FUNADA NAOHIRO , KONDO TOMOHIDE , SATO MASASHI , WAKABAYASHI ISAMU
IPC分类号： B65H7/02 , G03G21/00
摘要： PROBLEM TO BE SOLVED: To provide a recording medium thickness detection apparatus capable of highly accurately detecting the thickness of a recording medium by a simple structure while increasing the conveying capacity of recording media.SOLUTION: A recording medium thickness detection apparatus comprises: conveyance means for holding and conveying a recording medium between a driving roller and a driven roller which rotates submissively in contact with the driving roller; position measurement means for measuring the position of the driven roller in a contacting/separating direction with respect to the driving roller and outputting the measured value; and thickness calculation means for obtaining a first reference value from the measured value when the recording medium is not conveyed by the conveyance means, and calculating the thickness of the recording medium on the basis of the difference between the measured value when the recording medium is conveyed and the first reference value. In the recording medium thickness detection apparatus, the thickness calculation means obtains the first reference value when the last number of the recording media conveyed by the conveyance means after the first reference value was obtained reaches a first predetermined number N1 (N1 is an integer of 2 or greater).
摘要翻译：要解决的问题：提供一种记录介质厚度检测装置，其能够通过简单的结构高精度地检测记录介质的厚度，同时增加记录介质的传送能力。解决方案：一种记录介质厚度检测装置，包括：传送装置，在驱动辊和从动辊之间保持并传送记录介质，所述驱动辊与从动辊之间以与所述驱动辊接触的方式副旋转; 位置测量装置，用于测量从动辊相对于驱动辊的接触/分离方向的位置并输出测量值; 以及厚度计算装置，用于当记录介质不被传送装置传送时从测量值获得第一参考值，并且基于记录介质被传送时的测量值之间的差计算记录介质的厚度和第一个参考值。在记录介质厚度检测装置中，厚度计算装置获得第一基准值，当在获得第一基准值之后由输送装置输送的最后数量的记录介质达到第一预定数量N1时（N1是整数2 或更大）。

3. 发明专利

JP2014005145A Paper feeder, and image forming apparatus 有权
标题翻译：纸张进纸器和图像形成装置
公开(公告)号：JP2014005145A
公开(公告)日：2014-01-16
申请号：JP2013056314
申请日：2013-03-19
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： ARAAKI SATORU , WAKABAYASHI ISAMU , AOYAMA JUNPEI , EGUCHI YOSUKE , OTSUKA RIE
IPC分类号： B65H1/04
CPC分类号： B65H1/00 , B65H1/266 , B65H7/02 , B65H2301/4222 , B65H2403/411 , B65H2405/332 , B65H2511/51 , B65H2513/40 , B65H2513/512 , B65H2801/06 , B65H2220/01 , B65H2220/11 , B65H2220/03 , B65H2220/02
摘要： PROBLEM TO BE SOLVED: To provide a paper feeder in which a stop position of fence members is stably optimized regardless of the type and the number of sheets of paper by relatively simple configuration and control even in the case of automatically moving the fence members, and an image forming apparatus.SOLUTION: A pair of fence members 52, 53 formed movably in a width direction by movement means 60 to 62 so as to sandwich paper P from the sides of both ends in a width direction, a contact member 55 formed to project toward a width direction center with respect to a fence surface of the fence member 52 so as to come into contact with and be moved drivenly by the paper P, and position detection means 54, 56 for detecting a position at which the contact member 55 is displaced are installed. When a state in which the contact member 55 is started to come into contact with the paper P is detected, control is performed so as to stop the movement of the fence members 52, 53, and the fence members 52, 53 are moved again in a width direction on the basis of a detection result detected by the position detection means 54, 55 in the stopped state.
摘要翻译：要解决的问题：即使在自动移动篱笆构件的情况下，也可以通过相对简单的结构和控制，通过相对于纸张的类型和数量来稳定地优化篱笆构件的停止位置的供纸器，以及一种图像形成装置。解决方案：一对围栏构件52,53，通过移动装置60至62在宽度方向上可移动地沿宽度方向从两端的侧面夹住纸张P;接触构件55，形成为相对于挡板构件52的挡板面朝向宽度方向中心突出，以便与纸P接触并被纸P驱动;以及位置检测装置54,56，用于检测接触构件55的位置被安置。检测到接触构件55开始与纸张P接触的状态时，进行控制以停止篱笆构件52,53的移动，并且篱笆构件52,53再次移动基于由位置检测装置54,55检测到的停止状态的检测结果的宽度方向。

4. 发明专利

JP2011173724A Sheet feeding device and image forming apparatus 有权
标题翻译：纸张进给装置和图像形成装置
公开(公告)号：JP2011173724A
公开(公告)日：2011-09-08
申请号：JP2010124595
申请日：2010-05-31
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： ISHIKAWA YOSHIKUNI , WAKABAYASHI ISAMU , TAKAHASHI TOSHIAKI , NONAKA MANABU
IPC分类号： B65H3/18 , B65H1/14 , B65H3/68 , B65H5/00
CPC分类号： B65H3/18 , B65H1/14 , B65H3/047 , B65H2301/42344 , B65H2513/50 , B65H2801/06 , B65H2220/02
摘要： PROBLEM TO BE SOLVED: To provide a sheet feeding device and an image forming apparatus capable of realizing the high productivity irrespective of sheet characteristics.
SOLUTION: A separation unit 107 is arranged between the center position and an upstream end in the sheet conveying direction of the loading position of a sheet bundle 1 of the minimum size compatible with the sheet feeding device. The separation unit 107 has a bottom plate elevating arm 8 which conveys sheet separated by the separation unit 107, and elevates and lowers the sheet bundle 1 loaded on a bottom plate 7. The sheet bundle 1 is elevated by the bottom plate elevating arm 8 to the elevated position at which the highest sheet 1a is brought into contact with the separation unit 107. The separation unit 107 is stopped for the predetermined time to attract the highest sheet 1a, and the separation unit 107 starts the conveyance of the sheet 1a while the sheet bundle 1 is elevated at the elevated position after the elapse of the predetermined time.
COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：解决的问题：提供一种能够实现高生产率的片材进给装置和图像形成装置，而不管片材特性如何。解决方案：分离单元107布置在与片材进给装置相容的最小尺寸的片材摞1的装载位置的片材输送方向的中心位置和上游端之间。分离单元107具有底板升降臂8，该底板升降臂8输送由分离单元107分离的薄片，并且升高并降低装载在底板7上的薄片束1.薄片束1由底板升降臂8升高到最高纸张1a与分离单元107接触的升高位置。分离单元107停止预定时间以吸引最高纸张1a，并且分离单元107开始纸张1a的输送，同时片材束1在经过预定时间之后在提升位置升高。版权所有（C）2011，JPO＆INPIT

5. 发明专利

JP2014031275A Sheet material thickness detection device and image forming apparatus using the same 有权
标题翻译：材料厚度检测装置和使用其的图像形成装置
公开(公告)号：JP2014031275A
公开(公告)日：2014-02-20
申请号：JP2012280927
申请日：2012-12-25
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： WAKABAYASHI ISAMU , TAKENAKA MAKOTO , SATO MASASHI , NISHIZAKI SHINGO , OZAKI HIROSUKE , IKEDA YUJI , OKAMURA HISASHI , FUNADA NAOHIRO , KONDO TOMOHIDE
IPC分类号： B65H7/06
CPC分类号： B65H5/068 , B65H7/12 , B65H7/14 , B65H7/20 , B65H2404/144 , G03G15/5029 , G03G2215/00628 , G03G2215/00738
摘要： PROBLEM TO BE SOLVED: To provide a sheet material thickness detection device capable of accurately detecting a thickness of a sheet material with a simple construction and to provide an image forming apparatus using the same.SOLUTION: A sheet material thickness detection device comprises: drive rollers 41 which rotatably drive in a sheet conveyance direction and convey a sheet; driven belts 50 which form first nip parts across prescribed ranges in a perpendicular direction to the sheet conveyance direction by being in contact with the drive rollers 41 while being biased in a state in which they are displaceable following the thickness of the sheet passing the first nip parts and being driven to rotate around a driven shaft 48 in the sheet material conveyance direction; a detection roller 60 which forms a second nip part in which the length in the perpendicular direction to the sheet conveyance direction is shorter than the first nip parts by being in contact with one of the drive rollers 41 while being biased in a state in which it is displaceable following the thickness of the sheet passing the second nip part and being supported at a free end side of a detection holder 61; an encoder 44 which detects a displacement amount of the detection roller 60; and a calculation part which calculates the thickness of the sheet on the basis of a detection result of the encoder 44.
摘要翻译：要解决的问题：提供一种能够以简单的结构精确地检测片材的厚度的片材厚度检测装置，并提供使用其的成像装置。解决方案：片材厚度检测装置包括：驱动辊 41，其以片材输送方向旋转驱动并输送片材; 从动带50，其通过与驱动辊41接触而在垂直于片材输送方向的方向上形成第一夹持部分，同时在按照经过第一压区的片材厚度可移位的状态被偏置并且被驱动以在片材输送方向上绕从动轴48旋转; 形成第二夹持部的检测辊60，其中与片材输送方向垂直的方向上的长度比其中一个驱动辊41与其中一个驱动辊41接触的第一夹持部分短，可以随着经过第二咬合部分的片材的厚度移动并被支撑在检测保持器61的自由端侧; 检测检测辊60的位移量的编码器44; 以及计算部，其基于编码器44的检测结果来计算纸张的厚度。

6. 发明专利

JP2011190103A Sheet conveying device and image forming apparatus 有权
标题翻译：输送装置和图像形成装置
公开(公告)号：JP2011190103A
公开(公告)日：2011-09-29
申请号：JP2010109191
申请日：2010-05-11
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： ISHIKAWA YOSHIKUNI , NONAKA MANABU , WAKABAYASHI ISAMU , IKEDA AKI
IPC分类号： B65H3/18
CPC分类号： B65H3/18 , B65H3/047 , B65H2402/31 , B65H2404/2693 , B65H2801/06
摘要： PROBLEM TO BE SOLVED: To provide a sheet conveying device and an image forming apparatus, which attains sufficient separation performance, separats an attraction belt from a sheet stack only by swinging an attractive separation unit, and reduces a number of components.
SOLUTION: In the attractive separation unit 12, the attraction belt 13 is stretched taut by two stretching rollers (driving roller 13A, driven roller 13B), and the driven roller 13B which is the stretching roller on the sheet conveying direction upstream side of the two stretching rollers is supported to be movable in the vertical direction within a predetermined range with respect to the upper surface of the sheet stack. A fulcrum of the swing of the attractive separation unit 12 is set to a position upstream in the sheet conveying direction of the driven roller 13B.
COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：为了提供获得足够的分离性能的片材输送装置和图像形成装置，只有通过摆动吸引的分离单元将吸引带与片材堆叠分开，并且减少了许多部件。解决方案：在有吸引力的分离单元12中，吸引带13由两个拉伸辊（驱动辊13A，从动辊13B）拉伸，作为拉伸辊的从动辊13B在纸张输送方向上游侧两个拉伸辊的相对于片材堆叠的上表面被支撑为能够在垂直方向上在预定范围内移动。吸引分离单元12的摆动的支点设定在从动辊13B的纸张输送方向上游的位置。版权所有（C）2011，JPO＆INPIT

7. 发明专利

JP2010164906A Charging unit and image forming apparatus 审中-公开
标题翻译：充电单元和图像形成装置
公开(公告)号：JP2010164906A
公开(公告)日：2010-07-29
申请号：JP2009009134
申请日：2009-01-19
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： WAKABAYASHI ISAMU , SAKAUCHI KAZUNORI , TAKENAKA YASUTA
IPC分类号： G03G15/02 , H01T19/04 , H05F3/04
摘要： PROBLEM TO BE SOLVED: To provide a charging unit that uses cylindrical discharging electrodes arranged in the same direction and whose tips hardly deteriorate even in long-term discharge, to reduce non-uniform discharge even when used at low current and reduce ozone generation.
SOLUTION: The charging unit has a plurality of cylindrical discharging electrodes. The plurality of cylindrical discharging electrodes are arranged in parallel to each other on almost the same plane, wherein the tips of the electrodes are equally spaced from the object to be charged.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供一种使用沿相同方向布置的圆柱形放电电极的充电单元，即使在长期放电时其尖端也几乎不劣化，即使在低电流下使用也减少不均匀的放电并减少臭氧代。
解决方案：充电单元具有多个圆柱形放电电极。多个圆柱形放电电极在几乎相同的平面上彼此平行地布置，其中电极的尖端与要充电的物体等距离。版权所有（C）2010，JPO＆INPIT

8. 发明专利

JP2010060913A Charging device and image forming apparatus 审中-公开
标题翻译：充电装置和图像形成装置
公开(公告)号：JP2010060913A
公开(公告)日：2010-03-18
申请号：JP2008227276
申请日：2008-09-04
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： TAKENAKA YASUTA , SAKAUCHI KAZUNORI , WAKABAYASHI ISAMU
IPC分类号： G03G15/02
摘要： PROBLEM TO BE SOLVED: To stably and uniformly control the charging potential of a photoreceptor while suppressing an increase in ozone generation and degradation in the efficiency of charging caused by a leakage of current.
SOLUTION: A charging device passes discharge, generated by a charging brush 14, through slits 12a of a grid electrode 12 and causes it to reach a photoreceptor (not shown), thereby uniformly charging the photoreceptor. The grid electrode 12 has a first face opposed to the charging brush 14 and a second face opposed to the photoreceptor (not shown). The first face is covered with an insulating layer 12c made of an insulating material, and a second face is not covered with the insulating layer 12c but is a surface made of a metal material forming an electrode layer 12b.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：为了稳定且均匀地控制感光体的充电电位，同时抑制臭氧产生的增加和由电流泄漏引起的充电效率的劣化。解决方案：充电装置通过充电刷14产生的放电通过栅电极12的狭缝12a，并使其到达感光体（未示出），从而对感光体均匀充电。栅电极12具有与充电用刷子14相对的第一面和与感光体（未图示）相对的第二面。第一面覆盖有由绝缘材料制成的绝缘层12c，并且第二面不被绝缘层12c覆盖，而是由形成电极层12b的金属材料制成的表面。版权所有（C）2010，JPO＆INPIT

9. 发明专利

JP2009294478A Electrifying device and image forming apparatus 有权
标题翻译：电气设备和图像形成装置
公开(公告)号：JP2009294478A
公开(公告)日：2009-12-17
申请号：JP2008148659
申请日：2008-06-05
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： TAKENAKA YASUTA , SAKAUCHI KAZUNORI , WAKABAYASHI ISAMU
IPC分类号： G03G15/02 , H01T19/04
摘要： PROBLEM TO BE SOLVED: To provide an electrifying device capable of obtaining stable electrifying performance by preventing irregular electrification, and to provide an image forming apparatus equipped therewith. SOLUTION: The electrifying device includes a conductive holding body and a discharge electrode held by the conductive holding body, and uniformly electrifies a surface of a latent image carrier of the image forming apparatus by generating discharge between an edge or surface of the discharge electrode to which electrifying bias is applied and the latent image carrier through a gap, wherein discharge is generated between the discharge electrode and the latent image carrier through an electrode which has a plurality of apertures opposed to the edge or the surface of the discharge electrode and to which bias having a different value from the electrifying bias is applied. The discharge electrodes are arranged in shape of a brush while they are bundled, the edge of each in the bundle of the discharge electrodes is cut obliquely, and the edge part of the bundle of the discharge electrodes is arranged at some pitch. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供一种能够通过防止不规则带电而获得稳定的通电性能的通电装置，并提供配备有其的成像装置。解决方案：充电装置包括导电保持体和由导电保持体保持的放电电极，并且通过在放电的边缘或表面之间产生放电来均匀地带电图像形成装置的潜像载体的表面施加充电偏压的电极和通过间隙的潜像载体，其中通过具有与放电电极的边缘或表面相对的多个孔的电极在放电电极和潜像载体之间产生放电，以及施加与通电偏压具有不同值的偏压。放电电极在被捆扎时布置成电刷的形状，放电电极束中的每一个的边缘被倾斜地切割，并且放电电极的束的边缘部分以一定的间距排列。版权所有（C）2010，JPO＆INPIT

10. 发明专利

JP2014028678A Apparatus for detecting thickness of recording media, image forming apparatus, method for detecting thickness of recording media, and program 审中-公开
标题翻译：用于检测记录介质厚度的装置，图像形成装置，用于检测记录介质的厚度的方法和程序
公开(公告)号：JP2014028678A
公开(公告)日：2014-02-13
申请号：JP2012169695
申请日：2012-07-31
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： NISHIZAKI SHINGO , OZAKI HIROSUKE , IKEDA YUJI , FUNADA NAOHIRO , OKAMURA HISASHI , KONDO TOMOHIDE , SATO MASASHI , WAKABAYASHI ISAMU
IPC分类号： B65H7/02 , G03G15/00
摘要： PROBLEM TO BE SOLVED: To provide an apparatus for detecting the thickness of a recording media which can detect the thickness of the recording media with high accuracy with a simple composition.SOLUTION: The apparatus for detecting the thickness of the recording media includes transporting means 55 for transporting the recording media P while holding the same between a drive roller 55a and a driven roller 55b brought into contact with the drive roller to be rotated, position measuring means 57 for measuring a position of the driven roller to the drive roller in the approaching/separating direction and outputting the measured value, correction value calculating means which calculates an average value after obtaining a plurality of measured values and calculates a correction value for correcting the measured value based on the average value, and thickness calculating means for calculating the thickness of the recording media on the basis of a value obtained by correcting measured values measured when transporting and not transporting the recording media with the transporting means by the correction value.
摘要翻译：要解决的问题：提供一种用于检测记录介质的厚度的装置，其可以以简单的组成以高精度检测记录介质的厚度。解决方案：用于检测记录介质的厚度的装置包括传送装置55 用于在将记录介质P保持在与要旋转的驱动辊接触的驱动辊55a和从动辊55b之间传送记录介质P的位置测量装置57用于在接近的状态下测量从动辊到驱动辊的位置 /分离方向并输出测量值;校正值计算装置，其在获得多个测量值之后计算平均值，并且计算用于基于平均值校正测量值的校正值;以及厚度计算装置，用于计算厚度基于通过校正测量值而获得的值的记录介质在传送装置时不用传送装置传送记录介质时测量。

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