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11. 发明专利

JP2012145703A Fixing device and image forming device 有权
标题翻译：固定装置和图像形成装置
公开(公告)号：JP2012145703A
公开(公告)日：2012-08-02
申请号：JP2011003205
申请日：2011-01-11
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： SHIMOKAWA TOSHIHIKO , YOSHIKAWA MASAAKI , ISHII KENJI , YOSHINAGA HIROSHI , ARAI YUJI , TAKAGI HIROTADA , IWATANI NAOKI , TOKUDA TETSUO , YAMAGUCHI YOSHINORI , IKEFUCHI YUTAKA , SESHIMO TAKUYA , FUJIMOTO IPPEI , YOSHIURA ARINOBU , IMADA TAKAHIRO , GOTO SO
IPC分类号： G03G15/20
摘要： PROBLEM TO BE SOLVED: To provide a fixing device and an image forming device capable of preventing delay of warm-up time for heating a fixing belt to a predetermined temperature and preventing the occurrence of a fixing failure due to the instability of the temperature of the fixing belt while maintaining the carrying properties of the fixing belt.SOLUTION: A pressure receiving member 22 for forming a fixing nip part N by receiving a pressure from a pressure roller 31 through a fixing belt 21 is disposed in an internal space surrounded by the inner peripheral surface of the fixing belt 21. The pressure receiving member 22 has a nip forming part 22a facing the fixing nip part N through the fixing belt 21 so as to form the fixing nip part N, a slide-contact part 22b in sliding contact with at least one position other than the fixing nip part N in the inner peripheral surface of the fixing belt 21 and a connection part for connecting the nip forming part 22a and the slide-contact part 22b so as to stretch the fixing belt 21.
摘要翻译：解决的问题：提供一种定影装置和图像形成装置，其能够防止将定影带加热到预定温度的预热时间的延迟，并且防止由于不稳定性导致的定影故障的发生同时保持定影带的承载性能。解决方案：用于通过从加压辊31通过定影带21接受压力来形成定影夹持部分N的压力接收部件22设置在由定影带21的内周表面包围的内部空间中。压力接收构件22具有通过定影带21面向定影夹持部N的辊隙形成部22a，以形成定影夹持部N，滑动接触部22b与除了定影夹持部之外的至少一个位置滑动接触定影带21的内周面中的部分N和用于连接夹持形成部分22a和滑动接触部分22b以便拉伸定影带21的连接部分。（C）2012年，JPO和INPIT

12. 发明专利

JP2012103608A Fixing device and image forming apparatus 有权
标题翻译：固定装置和图像形成装置
公开(公告)号：JP2012103608A
公开(公告)日：2012-05-31
申请号：JP2010253983
申请日：2010-11-12
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： YOSHIKAWA MASAAKI , ARAI YUJI , TAKAGI HIROTADA , YAMAGUCHI YOSHINORI , YOSHIURA ARINOBU , SHIMOKAWA TOSHIHIKO , TOKUDA TETSUO , IKEFUCHI YUTAKA , ISHII KENJI , IWATANI NAOKI , IMADA TAKAHIRO , YOSHINAGA HIROSHI , SESHIMO TAKUYA , GOTO SO , FUJIMOTO IPPEI
IPC分类号： G03G15/20
摘要： PROBLEM TO BE SOLVED: To provide a fixing device and an image forming apparatus able to prevent overheat of a support member, resulting from float of a fixing belt.SOLUTION: A fixing device 20 includes: a rotatable, flexible endless fixing belt 21; a nip forming member 26 for forming a nip part 27 sandwiching a recording medium P; and a tubular support member 60 rotatably supporting the fixing belt 21, and having a heating area 63 and a separating area 64. In the fixing device 20, the heating area 63 has an arcuate shape substantially equal in radius to that of the fixing belt 21, the center of the arc of the heating area 63 is situated upstream of the central line of the nip forming member 26 in the direction of recording medium conveyance. The separating area 64 has an arcuate shape and is situated downstream of the center of the arc of the heating area 63 in the direction of recording medium conveyance and is situated on the nip part 27 side. The maximum outside diameter between the heating area 63 and the separating area 64 corresponds to the maximum outside diameter of the support member 60, and is greater than the inside diameter of the fixing belt 21 together with.
摘要翻译：要解决的问题：提供一种能够防止由于定影带的浮起而导致的支撑构件过热的定影装置和图像形成装置。解决方案：定影装置20包括：可旋转的柔性环形定影带21; 夹持形成构件26，用于形成夹持记录介质P的夹持部27; 以及可旋转地支撑定影带21并具有加热区域63和分离区域64的管状支撑构件60.在定影装置20中，加热区域63具有与定影带21的半径大致相等的圆弧形状加热区域63的圆弧的中心位于压区形成构件26的中心线的上游沿记录介质输送方向。分离区域64具有弓形形状，并且位于加热区域63的圆弧的中心的下游，在记录介质输送方向上，并且位于辊隙部27侧。加热区域63和分离区域64之间的最大外径对应于支撑构件60的最大外径，并且大于定影带21的内径。版权所有（C）2012，JPO＆INPIT

13. 发明专利

JP2012103467A Fixation device and image formation 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：JP2012103467A
公开(公告)日：2012-05-31
申请号：JP2010251697
申请日：2010-11-10
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： IMADA TAKAHIRO , ISHII KENJI , IWATANI NAOKI , SESHIMO TAKUYA , YOSHINAGA HIROSHI , GOTO SO , TAKAGI HIROTADA , YAMAGUCHI YOSHINORI , SHIMOKAWA TOSHIHIKO , TOKUDA TETSUO , IKEFUCHI YUTAKA , ARAI YUJI , YOSHIURA ARINOBU , YOSHIKAWA MASAAKI , FUJIMOTO IPPEI
IPC分类号： G03G15/20 , F16C13/00
摘要： PROBLEM TO BE SOLVED: To provide a fixation device and an image formation device capable of inhibiting a slip phenomenon of a driven member when a sheet passes, so that excellent image quality can be obtained without increasing a component number.SOLUTION: A fixation device includes: a rotatable fixation member; a pressure roller 31 forming a nip part that presses the fixation member so as to cause unfixed toner on a passing recording medium to be fixed onto the recording medium; and a heater configured to heat the fixation member. The pressure roller 31 is a roller member including a cylindrical core bar 32 and an elastic layer 33 provided on an outer circumference of the core bar 32. An outer diameter RO1 of the core bar 32 at least at part of a non-sheet passing portion in an axial direction is larger than an outer diameter RO2 thereof at a sheet passing portion, and thickness t1 of the elastic layer 33 at least at part of the non-sheet passing portion in the axial direction is thinner than thickness t2 thereof at the sheet passing portion.
摘要翻译：要解决的问题：提供一种当片材通过时能够抑制从动构件的滑动现象的定影装置和图像形成装置，从而可以在不增加部件号的情况下获得优异的图像质量。解决方案：固定装置包括：可旋转固定构件; 形成夹持部的压力辊31，该夹持部按压固定构件，使得经过的记录介质上的未定影的调色剂固定在记录介质上; 以及构造成加热固定构件的加热器。加压辊31是包括圆柱形芯棒32和设置在芯棒32的外圆周上的弹性层33的辊构件。芯棒32的外径RO1至少部分为非片材通过部分在片材通过部分的轴向方向上的外径RO2大于非片材通过部分的至少一部分在轴向方向上的厚度t1比片材通过部分的厚度t2薄通过部分。版权所有（C）2012，JPO＆INPIT

14. 发明专利

JP2012103402A Fixing device and image forming apparatus 有权
标题翻译：固定装置和图像形成装置
公开(公告)号：JP2012103402A
公开(公告)日：2012-05-31
申请号：JP2010250725
申请日：2010-11-09
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： SHIMOKAWA TOSHIHIKO , YOSHIKAWA MASAAKI , ARAI YUJI , TOKUDA TETSUO , YAMAGUCHI YOSHINORI , IKEFUCHI YUTAKA , YOSHIURA ARINOBU , ISHII KENJI , IWATANI NAOKI , TAKAGI HIROTADA , SESHIMO TAKUYA , IMADA TAKAHIRO , GOTO SO , YOSHINAGA HIROSHI , FUJIMOTO IPPEI
IPC分类号： G03G15/20
摘要： PROBLEM TO BE SOLVED: To provide a fixing device and an image forming apparatus that prevent the occurrence of a belt slip to form high-quality images.SOLUTION: A fixing device comprises: a flexible, endless fixing belt 21 that runs in a predetermined direction to heat and melt a toner image; a pressuring roller 31 that comes into pressure contact with the fixing belt 21 to form a nip part; and a nip forming member 23 that is disposed at an inner peripheral side of the fixing belt 21 and comes into contact with the pressuring roller 31 via the fixing belt 21 to form a nip part. The nip forming member 23 includes a pressuring member contact part 24a an edge portion of which in a width direction other than a recording medium passage area is in substantially a similar shape to the pressuring roller 31.
摘要翻译：要解决的问题：提供一种防止皮带打滑发生形成高质量图像的定影装置和图像形成装置。解决方案：固定装置包括：柔性的，环形的定影带21，其沿预定方向延伸以加热和熔化调色剂图像; 与定影带21压力接触以形成压合部的加压辊31; 以及辊隙形成构件23，其设置在定影带21的内周侧，并且经由定影带21与加压辊31接触以形成辊隙部。辊隙形成构件23包括加压构件接触部分24a，其加压构件接触部分24a，其边缘部分在除了记录介质通道区域以外的宽度方向上与加压辊31基本相似。（C）2012年， JPO＆INPIT

15. 发明专利

JP2011197183A 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：JP2011197183A
公开(公告)日：2011-10-06
申请号：JP2010061897
申请日：2010-03-18
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： ISHII KENJI , YOSHIKAWA MASAAKI , YAMAGUCHI YOSHINORI , SHIMOKAWA TOSHIHIKO , IWATANI NAOKI , IMADA TAKAHIRO , IKEFUCHI YUTAKA , TOKUDA TETSUO , HASE TAKAMASA , SESHIMO TAKUYA , YOSHINAGA HIROSHI , FUJIMOTO IPPEI
IPC分类号： G03G15/20 , H05B3/00 , H05B3/12
CPC分类号： G03G15/2039 , G03G2215/2035 , G03G2215/2041
摘要： PROBLEM TO BE SOLVED: To provide a fixing device and image forming apparatus for stably butting a planar heating element on a fixing member at a low pressure and uniformly heating the fixing member while it is rotated at a low torque.SOLUTION: The fixing device includes a fixing sleeve 21, a pressure roller 31, an abutting member 26 that is arranged on the inner peripheral side of the fixing sleeve 21 and abuts on the pressure roller 31 via the fixing sleeve 21 to form a nip section, and a planar heating element 22 as an elastic sheet that is arranged on the inner peripheral side of the fixing sleeve 21, comes into contact with the fixing sleeve 21, and heats it. The main surface of the planar heating element 22 is in contact with the inner peripheral surface of the fixing sleeve 21 at a surface pressure applied by bending elastic force of the planar heating element 22.
摘要翻译：要解决的问题：提供一种用于在低压下将平面加热元件稳定地对准定影构件的定影装置和图像形成装置，并且在以低扭矩旋转时均匀地加热固定构件。解决方案：定影装置包括定影套筒21，加压辊31，配置在定影套筒21的内周侧的抵接部件26，经由定影套筒21抵接在加压辊31上，形成夹持部，平面加热元件如图22所示，作为布置在定影套筒21的内周侧上的弹性片，与定影套筒21接触并加热。平面加热元件22的主表面在由平面加热元件22的弯曲弹力施加的表面压力下与定影套筒21的内周面接触。

16. 发明专利

JP2011186280A Developing device, process cartridge, and image forming apparatus 审中-公开
标题翻译：开发设备，过程盒和图像形成装置
公开(公告)号：JP2011186280A
公开(公告)日：2011-09-22
申请号：JP2010052797
申请日：2010-03-10
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： SESHIMO TAKUYA , YOSHIDA SATORU
IPC分类号： G03G15/08
摘要： PROBLEM TO BE SOLVED: To ensure sealability by securely capturing developer passing through a gap between a magnetic field generating member and a developer carrier. SOLUTION: In a developing device that has a developing roller 51 and develops a latent image carrier by using dry two-component developer composed of toner and magnetic carrier, a magnetic field generating member 57 for generating a magnetic field between the developing roller 51 and itself is disposed along the lengthwise direction of the developing roller 51. In addition, a cut 58 of V-shaped cross-section for capturing developer is formed on the surface 57a of the magnetic field generating member 57, which surface 57a is opposite the developing roller 51, and in a part corresponding to the outside 51B of the image area 51A of the developing roller 51. COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：通过可靠地捕获穿过磁场产生构件和显影剂载体之间的间隙的显影剂来确保密封性。解决方案：在具有显影辊51并通过使用由调色剂和磁性载体构成的干燥双组分显影剂显影潜像载体的显影装置中，形成用于在显影辊之间产生磁场的磁场产生部件57 51和本身沿着显影辊51的长度方向设置。此外，在磁场产生部件57的表面57a上形成用于捕获显影剂的V形横截面的切口58，该表面57a相对显影辊51，以及与显影辊51的图像区域51A的外侧51B对应的部分。版权所有（C）2011，JPO＆INPIT

17. 发明专利

JP2011186275A Fixing device and image forming apparatus 有权
标题翻译：固定装置和图像形成装置
公开(公告)号：JP2011186275A
公开(公告)日：2011-09-22
申请号：JP2010052768
申请日：2010-03-10
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： IKEFUCHI YUTAKA , YOSHIKAWA MASAAKI , ISHII KENJI , YOSHINAGA HIROSHI , IWATANI NAOKI , TOKUDA TETSUO , YAMAGUCHI YOSHINORI , FUJIMOTO IPPEI , SESHIMO TAKUYA , IMADA TAKAHIRO , HASE TAKAMASA , SHIMOKAWA TOSHIHIKO
IPC分类号： G03G15/20
CPC分类号： G03G15/2039 , G03G2215/2025
摘要： PROBLEM TO BE SOLVED: To start a fixing device without causing abnormal torque. SOLUTION: The fixing device includes: a fixing sleeve 21, which is a rotating endless belt whose internal peripheral surface is coated with a lubricant; a pressure roller 31 disposed on the outer circumferential side of the fixing sleeve 21 so as to be able to press the fixing sleeve 21; a contact member 26 disposed on the internal peripheral side of the fixing sleeve 21 and forming a nip portion by abutting on the pressure roller 31 via a fixing member by its being pressed by the pressure member 31; and a heating means (planar heating element) 22 disposed on the internal peripheral side of the fixing sleeve 21 and used for heating the fixing sleeve 21. On starting, the fixing sleeve 21 is rotated one or less time by the drive rotation of the pressure roller 31 to shift the area heated by the heating means 22 of the fixing sleeve 21 to the location of the nip portion. COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：启动定影装置而不引起异常扭矩。解决方案：定影装置包括：定影套筒21，其是内周表面涂有润滑剂的旋转环形带; 设置在定影套筒21的外周侧上以能够按压定影套筒21的加压辊31; 接触构件26，其设置在定影套筒21的内周侧，并且通过被压力构件31按压而通过固定构件抵靠压力辊31而形成压合部; 以及设置在定影套筒21的内周侧并用于加热定影套筒21的加热装置（平面加热元件）22。在起动时，通过压力的驱动旋转使定影套筒21旋转一个或更少的时间辊31将由定影套筒21的加热装置22加热的区域移动到辊隙部分的位置。版权所有（C）2011，JPO＆INPIT

18. 发明专利

JP2011164530A Developing device, process cartridge having the developing device, and image forming device including the developing device or process cartridge 有权
标题翻译：具有开发设备的开发设备，具有开发设备的处理盒，以及包括开发设备或处理盒的图像形成设备
公开(公告)号：JP2011164530A
公开(公告)日：2011-08-25
申请号：JP2010030234
申请日：2010-02-15
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： OYAMA KUNIHIRO , YAMANE MASAYUKI , YOSHIDA SATORU , SESHIMO TAKUYA , UCHITANI TAKESHI , KADOTA ICHIRO
IPC分类号： G03G15/08
摘要： PROBLEM TO BE SOLVED: To prevent toner aggregation in a toner storage part inside a developing device while maintaining a life of a developer. SOLUTION: A conveyance screw 56Y conveying a toner from the toner storage part 57Y to a developer storage part 54Y is divided into a conveyance screw 56aY inside the developer storage part 54Y and a conveyance screw 56bY inside the toner storage part 57Y. The conveyance screw 56bY is turned only inside the toner storage part 57 while stopping the conveyance screws 55Y and 56aY inside the developer storage parts 53Y and 54Y. COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：为了防止显影装置内的调色剂存储部分中的调色剂聚集，同时保持显影剂的寿命。解决方案：将调色剂从调色剂存储部分57Y传送到显影剂储存部分54Y的输送螺杆56Y被分成显影剂储存部分54Y内的输送螺杆56aY和调色剂储存部分57Y内部的输送螺杆56bY。传送螺丝56bY仅在调色剂储存部分57的内部转动，同时停止显影剂存储部分53Y和54Y内部的输送螺钉55Y和56aY。版权所有（C）2011，JPO＆INPIT

19. 发明专利

JP2011059210A Toner-accommodating container, toner-replenishing mechanism, and image-forming device 审中-公开
标题翻译：调色剂容纳器，调色剂机构和成像装置
公开(公告)号：JP2011059210A
公开(公告)日：2011-03-24
申请号：JP2009206539
申请日：2009-09-08
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： OSHIKAWA TAKEKI , ISHIKAWA TOMOJI , NAGAYAMA MASASHI , SESHIMO TAKUYA , UENISHI HIROYUKI , SATO SUKETAKA
IPC分类号： G03G15/08 , B65D83/06
摘要： PROBLEM TO BE SOLVED: To provide a toner-accommodating container which prevents a toner from absorbing moisture, even after a toner cartridge is mounted on an image-forming device body, to prevent the toner from aggregating; and to provide a toner-replenishing mechanism.
SOLUTION: The toner-accommodating container has: toner-accommodating parts 341, 321; and a desiccant-accommodating parts 342, 322, which are adjacent to the toner-accommodating parts 341, 321, through filters 343, 323 through which moisture in air passes. In this case, a toner bottle 34, which accommodates a toner for replenishment, is the toner-accommodating container. Further, a subhopper 32 which temporally stores the toner for replenishment is provided in the toner-replenishing mechanism 31 which is the toner-accommodating container.
COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：即使在调色剂盒安装在图像形成装置主体上之后，为了防止调色剂聚集，提供一种防止调色剂吸收水分的调色剂容纳容器; 并提供调色剂补充机构。调色剂容纳容器具有：调色剂容纳部341,321; 以及与调色剂容纳部分341,321相邻的干燥剂容纳部分342,322，通过空气中的水分通过的过滤器343,323。在这种情况下，容纳用于补充的调色剂的调色剂瓶34是调色剂容纳容器。此外，在作为调色剂容纳容器的调色剂补充机构31中设置暂时存储用于补充的调色剂的蚱蜢32。版权所有（C）2011，JPO＆INPIT

20. 发明专利

JP2010244014A Developing device, process cartridge and image forming apparatus 有权
标题翻译：开发装置，过程盒和图像形成装置
公开(公告)号：JP2010244014A
公开(公告)日：2010-10-28
申请号：JP2010007405
申请日：2010-01-15
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： KADOTA ICHIRO , OYAMA KUNIHIRO , YAMANE MASAYUKI , UCHITANI TAKESHI , YOSHIDA SATORU , SESHIMO TAKUYA
IPC分类号： G03G15/08
CPC分类号： G03G15/0849 , G03G15/0853 , G03G15/0877 , G03G15/0893 , G03G2215/0607 , G03G2215/0822
摘要： PROBLEM TO BE SOLVED: To provide a developing device that obtains a satisfactory image by preventing toner aggregation in a developer storage section in the developing device. SOLUTION: The developing device 5Y includes: a toner storage section 57Y for storing supply toner T; a developer storage section 54Y for storing two-component developer G composed of carrier and toner; and a conveying screw 56Y for conveying supply toner from the toner storage section to the developer storage section. The developing device is configured such that in an area lower than the height of the surface of toner supplied to the toner storage section, there is no space between the outside diameter R of the conveying screw 56Y and the internal wall 57Ya of the toner storage section. COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：提供一种通过防止显影装置中的显影剂存储部分中的调色剂聚集而获得令人满意的图像的显影装置。解决方案：显影装置5Y包括：用于存储供应调色剂T的调色剂存储部分57Y; 用于存储由载体和调色剂组成的双组分显影剂G的显影剂储存部分54Y; 以及用于将调色剂从调色剂存储部分输送到显影剂储存部分的输送螺杆56Y。显影装置被构造成使得在低于供给到调色剂存储部分的调色剂表面的高度的区域中，输送螺杆56Y的外径R和调色剂存储部分的内壁57Ya之间没有间隙。版权所有（C）2011，JPO＆INPIT

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