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11. 发明专利

JP2006064962A Image forming apparatus 有权
标题翻译：图像形成装置
公开(公告)号：JP2006064962A
公开(公告)日：2006-03-09
申请号：JP2004246835
申请日：2004-08-26
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： FURUYA SEIJI , TAKECHI RYUTA , SAITO HIROYUKI , NAKAYAMA TAKAHIRO
IPC分类号： G03G21/16 , G03G15/16
摘要： PROBLEM TO BE SOLVED: To provide an image forming apparatus suppressing cost increase and also suppressing the occurrence of failure due to poor point of contact. SOLUTION: The image forming apparatus 1 is provided with a transfer means 24 with an image carrier rotating body 11 and a facing rotating body 5 installed in a pressurized contact with it and transferring a toner image on the image carrier rotating body 11 to transfer material 2, each of the image carrier rotating body 11 and the facing rotating body 5 are installed to a cover 65 which provides 11 and 5 to be freely opened and closed against an apparatus body 16 and the image carrier rotating body 11 and the facing rotating body 5 are brought into a pressurized contact with each other or freely separated from each other. A grounding point of contact 83 connected to grounding is provided on the apparatus body 16 and an electrical point of contact 82 is provided to the cover 65. The apparatus is constituted so that the grounding point of contact 83 is brought into contact with the electrical point of contact 82 when the cover 65 is closed and the electrical point of contact 82 is separated when the cover 65 is opened. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供抑制成本增加的图像形成装置，并且还抑制由于接触不良导致的故障的发生。解决方案：图像形成装置1设置有转印装置24，转印装置24具有图像载体旋转体11和面对的旋转体5，该旋转体安装在与其加压接触并将图像载体旋转体11上的调色剂图像转印到转印材料2，每个图像载体旋转体11和面向旋转体5安装到盖65上，盖65提供11和5以自由地打开和关闭装置主体16和图像载体旋转体11和面旋转体5彼此进入加压接触或彼此自由分离。连接到接地的接地点83设置在设备主体16上，并且电接点82设置在盖65上。该装置构成为使接点83的接地点与电点接触当盖65打开时，盖65关闭并且接触点82被分离，接触件82被接合。版权所有（C）2006，JPO＆NCIPI

12. 发明专利

JP2005128148A Image forming apparatus 审中-公开
标题翻译：图像形成装置
公开(公告)号：JP2005128148A
公开(公告)日：2005-05-19
申请号：JP2003361877
申请日：2003-10-22
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： SAITO HIROYUKI , TAKECHI RYUTA , KIMURA YOSHIYUKI , FURUYA SEIJI
IPC分类号： G03G9/08 , G03G9/087 , G03G15/00
摘要： PROBLEM TO BE SOLVED: To prevent a rapid load variation to a cleaning device when a reference pattern toner image formed on an intermediate transfer belt is cleaned.
SOLUTION: The reference pattern toner image 1 formed on the intermediate transfer belt is provided with a triangular load reduction part 3 at a tip 1a on the approach side to the cleaning device 17 so that load which the cleaning device 17 receives at the time of cleaning becomes minimum and the load increases gradually in accordance with movement of the intermediate transfer belt in the direction of the arrow A. When a cleaning blade 17a comes in contact with the tip of the reference pattern toner image 1 and starts cleaning, the minimum load is first put on the cleaning device 17 and the load increases gradually in accordance with movement of the intermediate transfer belt in the direction of the arrow A, accordingly a rapid load variation can be prevented.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：为了防止在形成在中间转印带上的基准图案调色剂图像被清洁时对清洁装置的快速负载变化。解决方案：形成在中间转印带上的基准图案调色剂图像1在清洁装置17的接近侧的尖端1a处设有三角形负载减少部分3，使得清洁装置17在清洁时间变得最小，并且根据中间转印带沿着箭头A方向的移动，载荷逐渐增加。当清洁刮板17a与基准图案调色剂图像1的末端接触并开始清洁时，首先将最小负荷放在清洁装置17上，并且负载根据中间转印带沿箭头A的方向的移动而逐渐增加，因此可以防止快速的负荷变化。版权所有（C）2005，JPO＆NCIPI

13. 发明专利

JP2004240376A Image forming apparatus 审中-公开
公开(公告)号：JP2004240376A
公开(公告)日：2004-08-26
申请号：JP2003054103
申请日：2003-02-28
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： OOKAJI HIROYUKI , TAKAHASHI MITSURU , FURUYA SEIJI
IPC分类号： G03G15/00 , G03G15/16 , G03G21/16
摘要： PROBLEM TO BE SOLVED: To realize space saving, compaction and the reduction of cost, to facilitate jamming disposal, to improve safety in such disposal and to improve maintenance and the easiness of the exchange of parts. SOLUTION: In the image forming apparatus, an image formed by an image forming device is transferred to an intermediate transfer belt 12, and the 1st image is transferred to a transfer belt 17 by a transfer roller 18. Thereafter, a 2nd image is carried on the belt 12 and transferred to the 1st surface of transfer paper S, and the 1st image is transferred to the other surface thereof by a transfer charger 20. The transfer paper S is separated from the belt 17 by a separation corona charger 80. A side cover 61 is provided so as to be able to turn with a shaft 62 as a supporting point. When the cover is opened, the belt 17 is moved integrally with the cover 61 and the charger 20 and the charger 80 remain in the device main body 2. COPYRIGHT: (C)2004,JPO&NCIPI

14. 发明专利

JP2004163868A Fixing device and image forming apparatus with same fixing device 有权
公开(公告)号：JP2004163868A
公开(公告)日：2004-06-10
申请号：JP2003125899
申请日：2003-04-30
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： YASUI GENICHI , FURUKAWA HIDEO , EBARA MASANAO , FURUYA SEIJI
IPC分类号： G03G21/00 , G03G15/01 , G03G15/20 , G03G21/14 , H05B3/00
CPC分类号： G03G15/2039 , G03G2215/2016 , G03G2215/2032 , G03G2215/2041
摘要： PROBLEM TO BE SOLVED: To shorten a warm-up time of a fixing device which fixes a toner image on a recording medium with heat and pressure by passing the recording medium through a nip part between a fixing belt and a counter roller while pressing the counter roller against the fixing belt wound between a support roller and a heat roller and heating the fixing belt and counter roller by a 1st heating means incorporated in the counter roller and a 2nd heating roller incorporated in the counter roller. SOLUTION: During activation of the fixing device, a maximum power is supplied to the first heater 16, and only the first heater 16 heats the fixing belt 12. When a temperature on the fixing belt 12 reaches a first reference temperature, the fixing belt 12 is driven rotationally, the power supplied to the first heater 16 is dropped, and power is supplied also to the second heater 17. When the temperature on the fixing belt 12 reaches a target temperature and the temperature on the counter roller 13 reaches a second reference temperature, fixing operation is allowed to start. COPYRIGHT: (C)2004,JPO

15. 发明专利

JP2004138927A Belt unit and image forming apparatus 有权
公开(公告)号：JP2004138927A
公开(公告)日：2004-05-13
申请号：JP2002305231
申请日：2002-10-21
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： KATO TSUTOMU , OOKAJI HIROYUKI , FURUYA SEIJI , TAKAHASHI MITSURU
IPC分类号： G03G15/00 , G03G15/16
摘要： PROBLEM TO BE SOLVED: To provide a belt unit that prevents a belt surface from being scratched when the belt unit is placed on a floor after taken out of a housing and to provide an image forming apparatus.
SOLUTION: The belt unit 37, which has a transfer roller 3 and a belt 5 stretched round the transfer roller 3 and is attachable/detachable to/from the housing of the image forming apparatus 100, is provided with a contact prevention member 1 that prevents the belt 5 from being brought into direct contact with a floor when the unit 37 is taken out of the housing.
COPYRIGHT: (C)2004,JPO

16. 发明专利

JP2004109550A Image carrying device and image forming apparatus 审中-公开
公开(公告)号：JP2004109550A
公开(公告)日：2004-04-08
申请号：JP2002272563
申请日：2002-09-19
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： FURUYA SEIJI , KIMURA YOSHIYUKI , OOKAJI HIROYUKI
IPC分类号： G03G9/08 , G03G15/16 , G03G21/14
摘要： PROBLEM TO BE SOLVED: To provide a compact image carrying device having improved cleaning performance. SOLUTION: When a first full color image K1 is transferred to a recording medium by applying a positive bias voltage with a secondary transfer medium 36 and a secondary remaining toner RT2 which remains after removal with a secondary cleaning means 35 is removed, the secondary transfer means 36 applies a negative bias voltage to a secondary image carrier 30 to negatively charge the secondary remaining toner RT2. Once the toner RT2 reaches the secondary cleaning means 35, a bias roller 35b applies a positive bias voltage to the secondary image carrier 30 through a fur brush roller 35a, accordingly the toner RT2 sticks sequentially to the fur brush roller 35a and is removed from the carrier 30. COPYRIGHT: (C)2004,JPO

17. 发明专利

JP2013167905A Transfer device and image forming apparatus using the same 审中-公开
标题翻译：传送装置和使用其的图像形成装置
公开(公告)号：JP2013167905A
公开(公告)日：2013-08-29
申请号：JP2013095004
申请日：2013-04-30
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： FURUYA SEIJI , TAGAMI AKIRA , SEKINE TAKUYA , HARUNO KATSUTO , IMAI MASAKAZU
IPC分类号： G03G15/16
摘要： PROBLEM TO BE SOLVED: To provide a transfer device capable of suppressing a curvature roller from slipping on a belt member to suppress damage on the belt member, and an image forming apparatus including the transfer device.SOLUTION: A transfer device includes: a loop-like conductive intermediate transfer belt 11 that is moved endlessly while being tensioned by tension rollers 13, 15, 16, and 17; a surface roller 19 that contacts a front face that is a loop outer face of the intermediate transfer belt 11 to curve the intermediate transfer belt 11 toward the inside of the loop, and rotates in unison with the endless movement of the intermediate transfer belt 11; and a power source 81 that applies bias having predetermined polarity that electrostatically adsorbs the intermediate transfer belt 11 to the surface roller 19 to the surface roller 19. The surface roller 19 includes a surface layer formed of a conductive elastic member.
摘要翻译：要解决的问题：提供一种能够抑制曲率辊在带部件上滑动以抑制带部件损坏的转印装置，以及包括转印装置的图像形成装置。传送装置包括：同时由张紧辊13,15,16和17张紧而不断移动的导电中间转印带11; 接触作为中间转印带11的环状外表面的前表面的表面辊19，以使中间转印带11向环的内侧弯曲，并与中间转印带11的环形移动一致地旋转; 以及施加具有预定极性的偏压的电源81，其将中间转印带11静电吸附到表面辊19到表面辊19.表面辊19包括由导电弹性构件形成的表面层。

18. 发明专利

JP2013057981A Image forming device 有权
标题翻译：图像形成装置
公开(公告)号：JP2013057981A
公开(公告)日：2013-03-28
申请号：JP2012287747
申请日：2012-12-28
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： HARUNO KATSUTO , YAMAGUCHI TOSHITAKA , FURUYA SEIJI , SEKINE TAKUYA , IMAI MASAKAZU , FUJITA JUNPEI
IPC分类号： G03G21/10 , G03G15/16 , G03G21/00
摘要： PROBLEM TO BE SOLVED: To provide an image forming device capable of preventing a problem such as scattering of a waste toner and faulty cleaning, even if blowing means is disposed near cleaning means.SOLUTION: An image forming device includes: an intermediate transfer belt 12 which is a body to be cleaned; a cleaning unit 20 for removing a toner on the intermediate transfer belt 12; and a waste toner tank 60 which collects a toner removed by the cleaning unit 20 and dropped by self weight, and in which the longitudinal direction length of an opening portion opposite to the cleaning unit 20 is smaller than the longitudinal direction length of a bottom portion. The waste toner tank 60 has a narrowed shape so as to be cleaned, and a cooling fan 61 for cooling the inside of a device by blowing is installed in a space made by the narrowed shape of the waste toner tank 60. Between the cleaning unit 20 and the cooling fan 61, a blocking member 62 for blocking a space between the cleaning unit 20 and the cooling fan 61 is installed.
摘要翻译：要解决的问题：即使在清洁装置附近设置吹风装置，也能够提供能够防止废粉末飞散等问题的故障清洗的图像形成装置。解决方案：图像形成装置包括：中间转印带12，其是待清洁的主体; 用于去除中间转印带12上的调色剂的清洁单元20; 以及废墨罐60，其收集由清洁单元20去除并由自重下落的调色剂，并且其中与清洁单元20相对的开口部分的纵向长度小于底部的纵向方向长度。废墨罐60具有变窄的形状以被清洁，并且用于通过吹送将装置内部冷却的冷却风扇61安装在由废色调剂罐60的窄形状构成的空间中。在清洁单元 20和冷却风扇61，安装用于阻挡清洁单元20和冷却风扇61之间的空间的阻挡构件62。版权所有（C）2013，JPO＆INPIT

19. 发明专利

JP2010072243A Image forming device 有权
标题翻译：图像形成装置
公开(公告)号：JP2010072243A
公开(公告)日：2010-04-02
申请号：JP2008238509
申请日：2008-09-17
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： FUJITA JUNPEI , YAMAGUCHI TOSHITAKA , TAGAMI AKIRA , FURUYA SEIJI , SEKINE TAKUYA , HARUNO KATSUTO
IPC分类号： G03G15/16 , G03G15/00 , G03G15/20
CPC分类号： G03G15/1605 , G03G15/6564 , G03G15/657 , G03G2215/00565 , G03G2215/1666
摘要： PROBLEM TO BE SOLVED: To provide an image forming device capable of securing conveyability between conveying members in two portions, in constitution generating a dispersion in a positional relation of the conveying members in the two portions adjacent each other along a conveying direction of a recording medium. SOLUTION: A secondary transfer exit guide member 210 arranged between a secondary transfer roller 21 and a fixing device 30 is positioned with respect to a secondary transfer ball bearing 21a with the positional relation fixed with respect to the secondary transfer roller 21, and a fixing bottom face plate 304 with the positional relation fixed with respect to a fixing roller 301. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：解决的问题：为了提供一种图像形成装置，其能够确保两个部分之间的输送部件之间的输送性，其结构是沿着彼此相邻的两个部分中的输送部件的位置关系沿着输送方向记录介质。解决方案：设置在二次转印辊21和定影装置30之间的二次转印出口引导构件210相对于二次转印用滚珠轴承21a定位，位置关系相对于二次转印辊21固定，固定底面板304，其位置关系相对于定影辊301固定。版权所有（C）2010，JPO＆INPIT

20. 发明专利

JP2010049095A Image forming apparatus 有权
标题翻译：图像形成装置
公开(公告)号：JP2010049095A
公开(公告)日：2010-03-04
申请号：JP2008214345
申请日：2008-08-22
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： IMAI MASAKAZU , FURUYA SEIJI , HARUNO KATSUTO , SEKINE TAKUYA
IPC分类号： G03G15/16
摘要： PROBLEM TO BE SOLVED: To provide an image forming apparatus that secures strength of an apparatus by making different the attaching/detaching directions of an intermediate transfer unit and an image forming unit, and saves space. SOLUTION: The tandem type color image forming apparatus 1 includes the intermediate transfer unit 5a attachable/detachable from the device body. The intermediate transfer unit 5a is constituted so as to be attachable/detachable in a direction orthogonal to the axial direction of extension rollers 51-55 and in a horizontal direction. An intermediate transfer belt 56 is pressed and bent vertically by a pressing member (press down roller 55) from the outside of an endless belt. A plurality of unit-side bias terminals T (TY, TM, TC and TK) for supplying primary transfer biases to a plurality of primary transfer members (primary transfer rollers 57Y, 57M, 57C and 57K), respectively, are arranged on a line along the attachable/detachable direction of the intermediate transfer unit 5a in the space formed by inward-bending and recessing of the intermediate transfer belt 56. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：解决的问题：提供一种图像形成装置，其通过使中间转印单元和图像形成单元的安装/拆卸方向不同而保持装置的强度，并且节省空间。串联型彩色图像形成装置1包括可从装置主体附接/拆卸的中间转印单元5a。中间转印单元5a构造成在与延伸辊51-55的轴向垂直的方向上并且在水平方向上可附接/拆卸。中间转印带56通过按压部件（压下辊55）从环形带的外侧被垂直地按压并弯曲。用于向多个一次传送构件（一次转印辊57Y，57M，57C和57K）提供一次转印偏压的多个单元侧偏置端子T（TY，TM，TC和TK）分别布置在一行沿着中间转印单元5a在通过中间转印带56的向内弯曲和凹陷形成的空间中的可附接/可拆卸方向。（C）2010年，JPO＆INPIT

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