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1. 发明专利

JP2011107331A Image forming apparatus 审中-公开
标题翻译：图像形成装置
公开(公告)号：JP2011107331A
公开(公告)日：2011-06-02
申请号：JP2009261080
申请日：2009-11-16
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： ECHIGO KATSUHIRO
IPC分类号： G03G15/16
摘要： PROBLEM TO BE SOLVED: To provide an image forming apparatus having a configuration which can obtain a transfer nip pressure corresponding to the kind of a paper, without complicating the configuration.
SOLUTION: In a pressure roller 2C provided in a transfer position where a toner image carried by an intermediate transfer body 2 is transferred to a recording medium and a secondary transfer roller 9A facing the pressure roller 2C, a pressure applying member 14 moved and switched to a position turned to the right from the inner surface of the pressure roller 2C and a contact release position is provided in the pressure roller 2C. A secondary transfer pressure means 19 which can switch pressure toward the pressure roller 2C is provided in the secondary transfer roller 9A. The switching of the position of the pressure applying roller 14 and the switching of the pressure of the secondary transfer pressure means 19 are performed in conjunction with each other, according to the kind of the paper by a control part to which the paper kind detection result of the recording paper is input.
COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：提供一种图像形成装置，其具有能够获得与纸张种类相对应的转印夹持压力的构造，而不会使构造复杂化。解决方案：在设置在由中间转印体2承载的调色剂图像转印到记录介质的转印位置的压力辊2C和面向加压辊2C的二次转印辊9A中，压力施加部件14移动并切换到从加压辊2C的内表面向右转的位置，并且在压力辊2C中设置接触释放位置。在二次转印辊9A中设置有能够朝向加压辊2C切换压力的二次转印压力装置19。压力施加辊14的位置的切换和二次转印压力装置19的压力的切换根据纸张种类检测结果的控制部分根据纸张的种类而相互结合进行的记录纸被输入。版权所有（C）2011，JPO＆INPIT

2. 发明专利

JP2010191374A Cleaning device and image forming device 审中-公开
标题翻译：清洁装置和图像形成装置
公开(公告)号：JP2010191374A
公开(公告)日：2010-09-02
申请号：JP2009038249
申请日：2009-02-20
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： ECHIGO KATSUHIRO
IPC分类号： G03G15/16 , G03G21/10
摘要： PROBLEM TO BE SOLVED: To provide a cleaning device having a configuration capable of: preventing abrasive from being scattered; preventing the occurrence of insufficient polishing due to the scattering; and providing images having satisfactory quality irrespective of variation in amount of adhered toner and positional deviation of toner image due to filming and aging.
SOLUTION: The cleaning device 10 is used to clean an intermediate transfer body 2 on which the toner image carried by an image carrier where images are formed by an electrophotographic system is transferred after the toner image is transferred on a recording medium from the intermediate transfer body 2. The cleaning device 10 includes a cleaning member 10A arranged on the upstream side in the direction of travel of the intermediate transfer body 2 and abutting on the intermediate transfer body 2, and a polishing member 10B arranged on the downstream side of the cleaning member 10A in the direction of travel of the intermediate transfer body 2, provided to come into contact with and separate from a surface of the intermediate transfer body 2, and having a polishing layer 10B1 on its surface.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供一种清洁装置，其具有能够防止磨料散落的构造; 防止由于散射导致的研磨不足; 并且提供具有令人满意的质量的图像，而不管粘附的调色剂的量的变化和由于成膜和老化引起的调色剂图像的位置偏差。解决方案：清洁装置10用于清洁中间转印体2，在中间转印体2上，在将调色剂图像从记录介质上转印到转印体上之后，转印有由电子照相系统形成图像的图像载体承载的调色剂图像中间转印体2.清洁装置10包括：设置在中间转印体2的行进方向的上游侧并与中间转印体2抵接的清洁部件10A以及配置在中间转印体2的下游侧的研磨部件10B 清洁构件10A沿中间转印体2的行进方向设置成与中间转印体2的表面接触并分离，并且在其表面上具有抛光层10B1。版权所有（C）2010，JPO＆INPIT

3. 发明专利

JP2008083708A Image forming apparatus 审中-公开
标题翻译：图像形成装置
公开(公告)号：JP2008083708A
公开(公告)日：2008-04-10
申请号：JP2007262536
申请日：2007-10-05
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： NAKATO ATSUSHI , KUROTAKA SHIGEO , ECHIGO KATSUHIRO , FUJITA TAKASHI , KIKUCHI HISASHI , YURA JUN , BABA SATOHIKO , IKEGAMI HIROKAZU
IPC分类号： G03G21/00 , B41J29/38 , G03G15/20
摘要： PROBLEM TO BE SOLVED: To prevent a user from being exposed to a danger caused by an accident as in the case a capacitor malfunctions in a non-use mode. SOLUTION: The image forming apparatus is equipped with a heat source 15 which heats a fixing means by generating heat when power is supplied thereto and a drive means which supplies power to the heat source 15. The drive means has the capacitor 17 which can be charged or discharged and a charger 19 which receives power from a commercial power source 18 and charges the capacitor 17. In the image forming apparatus, discharging means 22 and 23 are provided to allow discharging from the capacitor 17 when the apparatus is in the non-use mode. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：为了防止用户在非使用模式下发生电容器故障的情况下被暴露于事故危险中。解决方案：图像形成装置配备有热源15，该热源15在向其供电时通过产生热量而加热固定装置，以及向热源15供电的驱动装置。驱动装置具有电容器17，可以充电或放电，以及从商用电源18接收电力并对电容器17充电的充电器19.在图像形成装置中，设置放电装置22和23，以便当装置处于非使用模式。版权所有（C）2008，JPO＆INPIT

4. 发明专利

JP2006259122A Image forming apparatus 审中-公开
标题翻译：图像形成装置
公开(公告)号：JP2006259122A
公开(公告)日：2006-09-28
申请号：JP2005075252
申请日：2005-03-16
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： KOYAMA HAJIME , ECHIGO KATSUHIRO , TAMIYA TAKAHIRO , KIKUCHI HISASHI
IPC分类号： G03G15/06 , G03G9/08 , G03G15/16
摘要： PROBLEM TO BE SOLVED: To easily and effectively suppress failures, such as transfer dust, dot image reproduction failure, toner scattering, and reverse transfer of a previous process transfer toner to an image carrier, by preventing the transfer of the toner in slight gaps on upstream and downstream of a transfer nip at the time of transfer without depending on a surface potential distribution (toner sensible image pattern) of an image carrier in developing.
SOLUTION: The image forming apparatus equipped with a photoreceptor, a developing roller for carrying and conveying a developer, and a means for transferring the toner image formed on the photoreceptor by an electric field to a transfer material, in which the development is performed under the conditions of satisfying the relation {|Q2|-|Q1|}/|Q1| ≥-0.3, when Q1 denotes the average charge quantity of the toner in the developer carried on the developing roller just before passing through the counter area between the developing roller and the photoreceptor in a state where a potential difference between the surface of the developing roller and the surface of the photoreceptor is almost 0 V and Q2 denotes the average charge quantity of the surface toner image of the transfer material right after the electric field transfer to the surface for the next transfer material from the photoreceptor.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：通过防止调色剂的转印，容易且有效地抑制诸如转印灰尘，点图像再现失败，调色剂飞散和先前的处理转印调色剂向图像载体的反向转印的故障在转印时在转印辊隙的上游和下游有轻微的间隙，而不依赖于显影中图像载体的表面电位分布（调色剂敏感图像图案）。解决方案：配备有感光体，用于承载和输送显影剂的显影辊的成像设备和用于将形成在感光体上的调色剂图像通过电场传送到转印材料的装置，其中显影是在Q1表示在显影辊承载在显影辊上的显影剂中的调色剂的平均电荷量在通过显影辊和感光体之间的对置区域之前，在满足关系式的条件下进行的条件下进行。在显影辊的表面与感光体的表面之间的电位差几乎为0V的状态下，Q2表示在电场转移到表面之后转印材料的表面调色剂图像的平均电荷量来自感光体的下一个转印材料。版权所有（C）2006，JPO＆NCIPI

5. 发明专利

JP2006251626A Image forming apparatus, image forming method, heat fixing device, and transfer fixing method 审中-公开
标题翻译：图像形成装置，图像形成方法，热固定装置和传送固定方法
公开(公告)号：JP2006251626A
公开(公告)日：2006-09-21
申请号：JP2005070747
申请日：2005-03-14
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： KUNII HIROYUKI , FUJITA TAKASHI , NAKATO ATSUSHI , ECHIGO KATSUHIRO , SOMEYA YUKIMICHI , KIKUCHI HISASHI , BABA SATOHIKO , KUROTAKA SHIGEO , KAMI KOJI
IPC分类号： G03G15/16 , G03G9/08 , G03G15/01 , G03G15/20 , G03G15/24 , G03G21/14
摘要： PROBLEM TO BE SOLVED: To provide an image forming apparatus adjusting the glossiness of a toner image without changing the temperature of a heater 16a and suppressing the variation in glossiness due to a difference in the thickness of transfer paper P. SOLUTION: A fixing belt 21 is so configured as to change the moving time from the turning point which is a heating start position and where the belt is put around a transfer heating roller 16 to a point which is a pressing start position and where the belt abuts on a pressure roller 24 in the following manner. A moving mechanism for moving each of a drive roller 22 stretching the fixing belt 21 and the pressure roller 24 abutting on the same via the pressure roller 24 is provided. As a result, the stretching posture of the fixing belt 21 is changed by simultaneously moving the drive roller 22 and the pressure roller 24. The moving time from the heating start position up to the pressing start position is changed by the change in the stretching posture. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种调节调色剂图像的光泽度而不改变加热器16a的温度并抑制由于转印纸P的厚度差异引起的光泽度变化的图像形成装置。解决方案：定影带21被构造成从作为加热开始位置的转折点和传送加热辊16周围的位置改变到作为按压开始位置的点的移动时间，并且带以如下方式紧靠压力辊24。提供了一种移动机构，用于使通过压力辊24使定影带21和与其相邻的加压辊24延伸的驱动辊22中的每一个移动。结果，通过同时移动驱动辊22和加压辊24来改变定影带21的拉伸姿态。从加热开始位置到按压开始位置的移动时间由于拉伸姿势的变化而改变。版权所有（C）2006，JPO＆NCIPI

6. 发明专利

JP2006215065A Fixing device and image forming apparatus 审中-公开
标题翻译：固定装置和图像形成装置
公开(公告)号：JP2006215065A
公开(公告)日：2006-08-17
申请号：JP2005024860
申请日：2005-02-01
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： SOMEYA YUKIMICHI , FUJITA TAKASHI , KIKUCHI HISASHI , KAMI KOJI , ECHIGO KATSUHIRO , KUROTAKA SHIGEO , KUNII HIROYUKI , NAKATO ATSUSHI , BABA SATOHIKO
IPC分类号： G03G15/20
摘要： PROBLEM TO BE SOLVED: To provide a fixing device and an image forming apparatus which effectively use excess energy, are superior in energy saving property and also excellent from the view points of high image quality, durability and heat efficiency. SOLUTION: The fixing apparatus is provided with a heating means (13) heating a toner image and a preliminary heating member (15) carrying out preliminary heating of a recording medium (12) by the heat which is generated by the heating means (13) before the recording medium (12) reaches a nip part. Therefore, the preliminary heating member is heated by the heat energy to the surrounding by the heating means other than for heating a toner image and the fixing property can be improved by heating the recording medium before transferring by the preliminary heating member and the energy can be used effectively as well and furthermore, the fixing temperature is lowered, resulting in saving energy. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：解决问题：为了提供一种能够有效利用多余的能量的定影装置和图像形成装置，从图像质量，耐久性和热效率的观点出发，节能性优异。解决方案：定影装置设置有加热调色剂图像的加热装置（13）和通过加热装置产生的热进行记录介质（12）的预加热的预加热构件（15）（13）在记录介质（12）到达夹持部分之前。因此，预热加热部件除了用于加热调色剂图像之外，通过加热装置被热能加热到周围，并且可以通过在由预加热部件传送之前加热记录介质来提高定影性能，并且能量可以有效地使用，此外，定影温度降低，从而节省能量。版权所有（C）2006，JPO＆NCIPI

7. 发明专利

JP2006023533A Transfer fixing device and image forming apparatus 审中-公开
标题翻译：传输固定装置和图像形成装置
公开(公告)号：JP2006023533A
公开(公告)日：2006-01-26
申请号：JP2004201392
申请日：2004-07-08
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： NAKATO ATSUSHI , FUJITA TAKASHI , ECHIGO KATSUHIRO , KIKUCHI HISASHI , SOMEYA YUKIMICHI , KAMI KOJI , KUROTAKA SHIGEO , KUNII HIROYUKI , BABA SATOHIKO
IPC分类号： G03G15/20 , G03G15/16
摘要： PROBLEM TO BE SOLVED: To prevent firing from resulting in advance by restraining the rapid temperature rise of paper at the time of paper jamming in a secondary transfer fixing device in terms of fixing.
SOLUTION: In the secondary transfer type fixing device (12) of the image forming apparatus (1), a plurality of radiant heating sources (15) heating a transfer fixing member (13) from the outside are installed to be arranged in order on the upstream side of a nip part N between the transfer fixing member and a pressure member (14), so that the heat sources are dispersed to restrain output per one heat source. The device is provided with reflectors (22) individually corresponding to the respective radiant heat sources.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：为了防止在二次转印定影装置中的卡纸时的纸张的快速温度上升，防止由于固定而导致的点火。解决方案：在图像形成装置（1）的二次转印型定影装置（12）中，安装多个从外部加热转印固定构件（13）的辐射加热源（15）在转印固定构件和压力构件（14）之间的压合部分N的上游侧上排列，使得散热热源以抑制每个热源的输出。该装置设置有分别对应于相应的辐射热源的反射器（22）。版权所有（C）2006，JPO＆NCIPI

8. 发明专利

JP2005292594A Fixing device and image forming device 审中-公开
标题翻译：固定装置和图像形成装置
公开(公告)号：JP2005292594A
公开(公告)日：2005-10-20
申请号：JP2004109279
申请日：2004-04-01
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： NAKATO ATSUSHI , BABA SATOHIKO , ECHIGO KATSUHIRO , KUROTAKA SHIGEO , KUNII HIROYUKI , FUJITA TAKASHI , KIKUCHI HISASHI , SOMEYA YUKIMICHI , KAMI KOJI
IPC分类号： G03G15/20
摘要： PROBLEM TO BE SOLVED: To prevent a recording medium from wrapping around an output nip section of a fixing device. SOLUTION: The fixing device to fix the toner images T1, T2 on a recording sheet medium P has rollers 1, 2, 3, 4 consisting of pairs of fixing rollers and pressure rollers and a pressure belt 5 wrapped around the 2nd and 4th pressure rollers of the above roller 1, 2, 3, 4 arranged in the direction the recording medium P runs. In the roller pair arranged at the entrance side, the surface temperature of the 1st fixing roller 1 is set higher than the surface temperature of the 1st pressure roller 2. In the roller pair arranged at the output side, the surface temperature of the 2nd fixing roller 3 is set lower than the 2nd pressure roller 4. The surface hardness of the 2nd fixing roller 3 is set higher than the surface hardness of the 2nd pressure roller 4. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：为了防止记录介质缠绕在定影装置的输出压区部分周围。解决方案：将记录纸张介质P上的调色剂图像T1，T2固定的定影装置具有由成对的定影辊和压力辊组成的辊1,2,3和围绕第二和第二辊的压力带5 沿着记录介质P的方向排列的上述滚子1,2,3,4的第四压力辊。在布置在入口侧的辊对中，第一定影辊1的表面温度设定为高于第一加压辊2的表面温度。在布置在输出侧的辊对中，第二定影的表面温度辊3设定为低于第二加压辊4.第二定影辊3的表面硬度设定为高于第二加压辊4的表面硬度。（C）2006，JPO＆NCIPI

9. 发明专利

JP2005266304A Transfer and fixing device, image forming apparatus provided with the same, and transfer and fixing method 有权
标题翻译：传送和固定装置，与其同时提供的图像形成装置，以及传送和固定方法
公开(公告)号：JP2005266304A
公开(公告)日：2005-09-29
申请号：JP2004078502
申请日：2004-03-18
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： KUNII HIROYUKI , ECHIGO KATSUHIRO , KIKUCHI HISASHI , NAKATO ATSUSHI , SOMEYA YUKIMICHI , KUROTAKA SHIGEO , BABA SATOHIKO , KAMI KOJI , FUJITA TAKASHI
IPC分类号： G03G15/20 , G03G15/16
CPC分类号： G03G15/169 , G03G2215/0119 , G03G2215/1695
摘要： PROBLEM TO BE SOLVED: To prevent the occurrence of degradation of image quality or blurs or partial fixing defects of image, which is caused by the variance of toner spread area in respective parts of toner transferred and fixed to a recording medium.
SOLUTION: Particulates of an unfixed image formed with powdery particulate toner transferred to a transfer and fixing belt 13 are at least partially bound into one body, by passing between a pair of toner integrating rollers 24 and 25, and a surface side brought into contact with a paper P, of the united toner is heated by a halogen heater 15 to give an adhesive property required for fixing. Therefore, the temperature of a surface side, coming into contact with the transfer and fixing belt 13 of the toner, is not made as high as that of the surface side coming into contact with the paper P, and the variance of toner spread area is small though the toner is pressurized in a fixing nip part NP and is transferred and fixed. Consequently, a proper image quality is obtained. Since toner particulates are enlarged by uniting, they do not enter into the recessed parts of the paper surface, and blurs or partial fixing defects of an image are prevented.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：为了防止由转印并固定在记录介质上的调色剂的各部分中的调色剂扩散面积的变化引起的图像质量劣化或图像的模糊或部分固定缺陷的发生。解决方案：转移到转印和定影带13上的粉状颗粒调色剂形成的未定影图像的颗粒通过在一对调色剂整合辊24和25之间通过并带有表面的方式至少部分地结合在一体中与联合调色剂的纸张P接触由卤素加热器15加热，得到固定所需的粘合性。因此，与调色剂的转印和定影带13接触的表面侧的温度不会与表面侧与纸P接触的温度高，并且调色剂扩散面积的变化为尽管调色剂在定影夹持部分NP中被加压，并且被传送和固定。因此，获得了适当的图像质量。由于调色剂颗粒通过结合而增大，它们不会进入纸表面的凹陷部分，并且防止了图像的模糊或部分固定缺陷。版权所有（C）2005，JPO＆NCIPI

10. 发明专利

JP2005258209A Fixing apparatus and image forming apparatus provided with it 有权
标题翻译：固定装置和图像形成装置
公开(公告)号：JP2005258209A
公开(公告)日：2005-09-22
申请号：JP2004071332
申请日：2004-03-12
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： BABA SATOHIKO , ECHIGO KATSUHIRO , NAKATO ATSUSHI , KUNII HIROYUKI , SOMEYA YUKIMICHI , KUROTAKA SHIGEO , KIKUCHI HISASHI , KAMI KOJI , FUJITA TAKASHI
IPC分类号： G03G21/00 , G03G15/00 , G03G15/20 , G03G21/20
摘要： PROBLEM TO BE SOLVED: To carry out fixing without any oil with no occurrence of wrapping even in transfer paper with a large amount of attached toner and no margin in a leading tip part. SOLUTION: In this fixing apparatus, halogen heaters 13a and 13b are each provided as heating sources to interiors of a fixing roller 10a rotated clockwise and a pressure roller 10b brought into a pressurized contact with the fixing roller 10a and rotating following it counter clockwise. The surface temperature of the rollers are controlled by thermisters 15 and 15 detecting the surface temperature. A preliminary heating means 40 consisting of a halogen heater 43 and a reflecting plate 41 is provided on a more upstream side than a nip part of the fixing roller 10a and the pressure roller 10b and the transfer material P with a toner image Pt carried on its surface is heated from the backside. Thus, the toner temperature is raised, toner temperature gradient in the nip part is made slack, toner viscosity is suppressed low and the wrapping can be prevented. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：即使在具有大量附着的调色剂的转印纸中也不会发生包装而不发生包装而进行固定，并且在前端部分中没有余量。解决方案：在这种定影装置中，卤素加热器13a和13b分别设置为加热源，以定影辊10a顺时针旋转的内部和加压辊10b与定影辊10a加压接触并且随其反转顺时针。辊的表面温度由检测表面温度的热敏电阻15和15控制。在定影辊10a和加压辊10b和转印材料P的夹持部分的上游侧设置由卤素加热器43和反射板41组成的初步加热装置40，其上具有调色剂图像Pt 表面从背面加热。因此，调色剂温度升高，使夹持部分中的调色剂温度梯度松弛，调色剂粘度被抑制并且可以防止包装。版权所有（C）2005，JPO＆NCIPI

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