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41. 发明专利

JP2014163998A Fixing apparatus 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：JP2014163998A
公开(公告)日：2014-09-08
申请号：JP2013032520
申请日：2013-02-21
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： HIROSE FUMIHIRO , OKAMOTO JUN , SUZUKI NAOTO , UENO SATOSHI , TOKUDA TETSUO , SAKAMAKI TAKASHI , YAMANO MOTOYOSHI
IPC分类号： G03G15/20
摘要： PROBLEM TO BE SOLVED: To provide a fixing apparatus including a separation plate which can be easily adjusted into a desired curved state in manufacturing.SOLUTION: A fixing apparatus includes: a separation plate 83 which is arranged downstream of a nip part in a conveyance direction of a recording medium to separate the recording medium from any of a fixing member 24 and a pressure member 1; and holding members (100a, 100b, 100c,...) for holding the separation plate 83. Three or more holding members are arranged in an axial direction of a rotating body to be separated by the separation plate 83, and have lengths adjusted in advance in a direction perpendicular to the conveyance direction and the axial direction. The separation plate is fixed to each of the three or more holding members arranged in the axial direction, and is kept curved.
摘要翻译：要解决的问题：提供一种定影装置，其包括在制造中可以容易地调节到所需弯曲状态的分离板。解决方案：定影装置包括：分离板83，其布置在输送方向上的辊隙部分的下游的记录介质，以将记录介质与固定构件24和压力构件1中的任一个分离; 以及用于保持分隔板83的保持构件（100a，100b，100c，...）。三个或更多个保持构件沿旋转体的轴向布置以由分隔板83分离，并且具有长度调节在与输送方向和轴向垂直的方向上前进。分离板固定在沿轴向布置的三个或更多个保持构件中的每一个上，并保持弯曲。

42. 发明专利

JP2014157215A 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：JP2014157215A
公开(公告)日：2014-08-28
申请号：JP2013027533
申请日：2013-02-15
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： HIROSE FUMIHIRO , SUZUKI NAOTO , UENO SATOSHI , UTSUNOMIYA KOICHI , TOKUDA TETSUO , SAKAMAKI TAKASHI , YAMANO MOTOYOSHI
IPC分类号： G03G15/20
摘要： PROBLEM TO BE SOLVED: To propose a fixing device capable of easily replacing a rubbing member while suppressing an increase in size of the device even when one plate-like separation member is used, and an image forming apparatus.SOLUTION: A fixing device 40 includes a fixing belt 41 that is heated by a heating device 44, and a pressure roller 45 that is brought into pressure contact with the fixing belt 41 to form a fixing nip N, and conveys a recording medium carrying an unfixed toner image to the fixing nip N to fix the toner image on the recording medium. The fixing device 40 further includes a separation plate 51 that is formed into a single flat plate having a width in a longitudinal direction longer than an image area, and separates a sheet conveyed from the fixing nip N from the fixing belt 41; and the separation plate 51 maintains a predetermined gap G with the fixing belt 41 at a leading edge part while maintaining flatness of the flat plate, and is held parallel or with inclination with respect to an axial line of the fixing belt 41.
摘要翻译：要解决的问题：提出一种能够容易地更换摩擦构件的定影装置，同时抑制即使使用一个板状分离构件时装置的尺寸增加，以及图像形成装置。解决方案：定影装置40包括由加热装置44加热的定影带41和与定影带41压力接触以形成定影辊隙N的加压辊45，并将携带未定影调色剂图像的记录介质输送到定影辊隙 N将调色剂图像固定在记录介质上。定影装置40还包括分隔板51，其形成为具有比图像区域长的宽度的单个平板，并且将从定影辊隙N传送的片材与定影带41分离; 并且分离板51将定影带41保持在前缘部分处的预定间隙G，同时保持平板的平坦度，并且相对于定影带41的轴线保持平行或倾斜。

43. 发明专利

JP2014089478A 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：JP2014089478A
公开(公告)日：2014-05-15
申请号：JP2014018392
申请日：2014-02-03
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： FUJIMOTO IPPEI , YOSHINAGA HIROSHI , TOKUDA TETSUO , HASE TAKAMASA , SHIMOKAWA TOSHIHIKO , ISHII KENJI , YAMAGUCHI YOSHINORI , YOSHIKAWA MASAAKI , IWATANI NAOKI , IMADA TAKAHIRO , IKEFUCHI YUTAKA , HASEGAWA KENICHI , SHINSHI AKIRA
IPC分类号： G03G15/20 , H05B3/00 , H05B6/06 , H05B6/14
摘要： PROBLEM TO BE SOLVED: To supply stable fixing quality by reducing a temperature ripple.SOLUTION: A fixing device comprises: an end temperature detection sensor 37 disposed on the end side in the width direction of a fixing belt 21 to abut on a surface of a heating element 25b, the surface to a surface being in contact with the fixing belt 21; and a center temperature detection sensor 35 disposed on the center side in the width direction to abut on the inner peripheral surface of the fixing belt 21. The heating elements 25a, 25b are installed to vary the distribution of heat generation in the width direction of the fixing belt 21, and the temperature is controlled based on the detection results of the end temperature detection sensor 37 in the non-rotating state of the fixing belt 21, and based on the detection results of the center temperature detection sensor 35 in the rotating state of a fixing member.
摘要翻译：要解决的问题：通过降低温度波动来提供稳定的定影质量。解决方案：定影装置包括：端部温度检测传感器37，其设置在定影带21的宽度方向的端侧上，以邻接加热元件25b，表面与定影带21接触的表面; 以及设置在宽度方向中心侧的中心温度检测传感器35，以抵接在定影带21的内周面上。加热元件25a，25b被安装以改变在宽度方向上的发热分布定影带21，并且基于终端温度检测传感器37在定影带21的非旋转状态下的检测结果来控制温度，并且基于转动状态下的中心温度检测传感器35的检测结果的固定构件。

44. 发明专利

JP2014089233A 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：JP2014089233A
公开(公告)日：2014-05-15
申请号：JP2012237585
申请日：2012-10-29
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： UENO SATOSHI , OKAMOTO JUN , TOKUDA TETSUO , SUZUKI NAOTO , SAKAMAKI TAKASHI , HIROSE FUMIHIRO , YAMANO MOTOYOSHI
IPC分类号： G03G15/20
摘要： PROBLEM TO BE SOLVED: To achieve a uniform temperature distribution in an axial direction of a fixing member or a pressure member by suppressing an increase in temperature of a non-paper-feed part while achieving space saving and cost reduction with a simple configuration.SOLUTION: A fixing device 20 includes a fixing belt 24, and a pressure roller 23 that forms a nip part between the fixing belt 24 and the pressure roller 23, and heatingly fixes a toner image T on a recording medium P. The fixing member 20 further has: pressure application/release means 30 (such as a pressure application/release cam 34) for bringing the pressure roller 23 into a pressure application state or a pressure release state relative to the fixing belt 24; a heat pipe roller 25 that comes into contact with at least one of the fixing belt 24 and pressure roller 23 to make a temperature in an axial direction uniform; and temperature uniformization member contact/separation means (such as a temperature uniformization cam 28) for bringing the heat pipe roller 25 into a contact state or a separation state relative to the fixing belt 24 or the pressure roller 23. The temperature uniformization member contact/separation means is controlled to be driven by the same driving means as that of the pressure application/release means.
摘要翻译：要解决的问题：通过抑制非进纸部分的温度升高来实现定影部件或压力部件的轴向温度均匀分布，同时以简单的构造实现节省空间并降低成本。定影装置20包括定影带24和在定影带24和加压辊23之间形成夹持部分的加压辊23，并将调色剂图像T加热固定在记录介质P上。固定部件20进一步具有：压力施加/释放装置30（例如压力施加/释放凸轮34），用于使压力辊23相对于定影带24进入压力施加状态或压力释放状态; 与定影带24和加压辊23中的至少一方接触以使轴向温度均匀的热管辊25; 以及用于使热管辊25相对于定影带24或加压辊23处于接触状态或分离状态的温度均匀化构件接触/分离装置（例如温度均匀化凸轮28）。温度均匀化构件接触/ 分离装置被控制为由与压力施加/释放装置相同的驱动装置驱动。

45. 发明专利

JP2014085579A 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：JP2014085579A
公开(公告)日：2014-05-12
申请号：JP2012235508
申请日：2012-10-25
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： OKAMOTO JUN , UENO SATOSHI , TOKUDA TETSUO , YAMAMOTO TAKESHI , SUZUKI NAOTO
IPC分类号： G03G15/20
摘要： PROBLEM TO BE SOLVED: To reduce start-up time while suppressing an increase in the size of a fixing unit having external electromagnetic induction heating means.SOLUTION: A fixing device includes: a fixing rotating body that has a heating roller applying heat to a toner image on a recording medium to fuse the toner image; a pressure rotating body that presses the recording medium against the fixing rotating body; and external electromagnetic induction heating means for heating the fixing rotating body. The heating roller includes inside thereof a magnetic flux shielding member and auxiliary heating means facing the external electromagnetic induction heating means.
摘要翻译：要解决的问题：减少启动时间，同时抑制具有外部电磁感应加热装置的定影单元的尺寸的增加。解决方案：一种定影装置包括：固定旋转体，其具有向调色剂施加热量的加热辊图像在记录介质上以熔化调色剂图像; 将记录介质压靠固定旋转体的压力旋转体; 以及用于加热固定旋转体的外部电磁感应加热装置。加热辊在其内部包括面对外部电磁感应加热装置的磁通屏蔽构件和辅助加热装置。

46. 发明专利

JP2013250535A 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：JP2013250535A
公开(公告)日：2013-12-12
申请号：JP2012127433
申请日：2012-06-04
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： TOKUDA TETSUO , YOSHIKAWA MASAAKI , ISHII KENJI , YOSHINAGA HIROSHI , ARAI YUJI , TAKAGI HIROTADA , IWATANI NAOKI , YAMAGUCHI YOSHINORI , SESHIMO TAKUYA , FUJIMOTO IPPEI , IKEFUCHI YUTAKA , IMADA TAKAHIRO , GOTO SO , YOSHIURA ARINOBU , SHIMOKAWA TOSHIHIKO
IPC分类号： G03G15/20
摘要： PROBLEM TO BE SOLVED: To prevent the thermal destruction of a fixing device when using a member having a small heat capacity such as a fixing belt by preventing the abnormal overheat of the member used for fixation.SOLUTION: The fixing device includes: an endless flexible fixing belt 21; a nip forming member 22 disposed inside the flexible fixing belt 21; a support member 23 supporting the nip forming member 22; a pipe-like heat conductor 25 which is wound on an outer surface, so as to form the flexible fixing belt 21 like a loop, in which the nip forming member 22 and the support member 23 are disposed, which is heated by a heat source 24 below the support member 23, to heat the flexible fixing belt 21; and an opposite rotary body 26 coming into contact with the nip forming member 22 across the flexible fixing belt 21, to form a nip part between the opposite rotary body 26 and the flexible fixing belt 21. A deformation suppression member 27 is provided in the pipe-like heat conductor 25, the deformation suppression member 27 which is disposed in a position opposite to the heat source 24 and is with a gap for contacting when the pipe-like heat conductor 25 is thermally deformed, between the inner surface of the pipe-like heat conductor 25 and the deformation suppression member 27.
摘要翻译：要解决的问题：通过防止用于固定的构件的异常过热，当使用诸如定影带的热容量小的构件时，防止定影装置的热破坏。解决方案：固定装置包括：环形柔性定影带21; 设置在柔性定影带21内的辊隙形成构件22; 支撑辊隙形成构件22的支撑构件23; 缠绕在外表面上的管状导热体25，以形成类似环状的柔性定影带21，其中夹持形成构件22和支撑构件23被设置在其中，该夹持形成构件22和支撑构件23被热源 24，以支撑柔性定影带21; 以及相对的旋转体26穿过柔性定影带21与辊隙形成构件22接触，以在相对的旋转体26和柔性定影带21之间形成咬合部。变形抑制构件27设置在管形状抑制构件27设置在与热源24相反的位置，并且在管状导热体25发生热变形时具有用于接触的间隙，像导热体25和变形抑制部件27。

47. 发明专利

JP2013137475A 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：JP2013137475A
公开(公告)日：2013-07-11
申请号：JP2011289364
申请日：2011-12-28
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： IWATANI NAOKI , YOSHIKAWA MASAAKI , ISHII KENJI , YOSHINAGA HIROSHI , ARAI YUJI , TAKAGI HIROTADA , TOKUDA TETSUO , YAMAGUCHI YOSHINORI , SESHIMO TAKUYA , IKEFUCHI YUTAKA , YOSHIURA ARINOBU , IMADA TAKAHIRO , GOTO SO , SHIMOKAWA TOSHIHIKO
IPC分类号： G03G15/20
摘要： PROBLEM TO BE SOLVED: To provide a fixing device that stably operates, performs excellent fixation and further has short warm-up time.SOLUTION: A fixing device 20 includes: a travelable and movable flexible endless belt 21; a belt holding member 43 including guide sections 45 provided at both ends of the endless belt 21 to guide traveling and moving of the endless belt 21; a nip forming member 41 provided to be brought into contact with an inner peripheral surface of the endless belt 21; a pressure member 31 which is brought into pressure contact with the nip forming member 41 via the endless belt 21 to form a nip; and a heat source 40 provided in the inner peripheral surface of the endless belt 21. The fixing device 20 performs fixation by pressurizing and heating a material to be fixed which passes the nip. The guide sections 45 are provided at only an inlet part and an outlet part of the nip, and a tension member 46 is provided to closely contact the endless belt 21 to a guide section 44.
摘要翻译：要解决的问题：为了提供稳定操作的定影装置，执行优异的定影并且还具有短的预热时间。解决方案：定影装置20包括：可移动和可移动的柔性环形带21; 皮带保持构件43，其包括设置在环形带21的两端的引导部45，用于引导环形带21的移动和移动; 设置成与环形带21的内周面接触的辊隙形成构件41; 压力构件31，其经由环形带21与辊隙形成构件41压力接触以形成辊隙; 以及设置在环形带21的内周面的热源40.定影装置20通过加压和加热通过辊隙的待固定材料进行固定。引导部分45仅设置在压区的入口部分和出口部分处，并且设置张紧部件46以将环形带21紧密地接触到引导部分44。

48. 发明专利

JP2013120314A 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：JP2013120314A
公开(公告)日：2013-06-17
申请号：JP2011268594
申请日：2011-12-08
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： SAKAMAKI TAKASHI , OKAMOTO JUN , SUZUKI NAOTO , TOKUDA TETSUO , UENO TOMOSHI , HIROSE FUMIHIRO , YAMANO MOTOYOSHI
IPC分类号： G03G15/20
摘要： PROBLEM TO BE SOLVED: To provide a fixing device capable of efficiently cooling a pressure member while achieving energy saving and an image forming apparatus equipped with the fixing device.SOLUTION: There is provided a fixing device, which comprises: a fixing member which is rotatably arranged; heating means for heating the fixing member; a pressure member which is rotatably arranged and brought into press-contact with the fixing member to form a nip part between the fixing member; and cooling means having a heat absorbing member which comes in contact with the surface of the pressure member to absorb heat of the pressure member and cools the pressure member, and fixes a toner image on a recording medium with heat and pressure by making the recording medium pass through the nip part. The fixing device has contact and separation means for bringing the pressure member into contact with or separate from the fixing member and the heat absorbing member is arranged at a position in contact with the pressure member when the pressure member is brought into separated from the fixing member by the contact and separation means.
摘要翻译：要解决的问题：提供一种能够在实现节能的同时有效地冷却压力构件的固定装置和配备有定影装置的图像形成装置。解决方案：提供一种固定装置，其包括：可旋转地布置的固定构件; 用于加热固定构件的加热装置; 压力构件，其被可旋转地布置并与所述固定构件压接，以在所述固定构件之间形成咬合部; 以及冷却装置，其具有与压力构件的表面接触的吸热构件，以吸收压力构件的热量并冷却压力构件，并通过使记录介质将调色剂图像定影在记录介质上，并将其加热和加压穿过辊隙部分。定影装置具有用于使压力构件与固定构件接触或分离的接触分离装置，并且当压力构件与固定构件分离时，吸热构件布置在与压力构件接触的位置通过接触和分离手段。版权所有（C）2013，JPO＆INPIT

49. 发明专利

JP2013097188A 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：JP2013097188A
公开(公告)日：2013-05-20
申请号：JP2011240264
申请日：2011-11-01
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： GOTO SO , YOSHIKAWA MASAAKI , ARAI YUJI , TAKAGI HIROTADA , YAMAGUCHI YOSHINORI , TOKUDA TETSUO , IKEFUCHI YUTAKA , YOSHIURA ARINOBU , SHIMOKAWA TOSHIHIKO , ISHII KENJI , YOSHINAGA HIROSHI , IWATANI NAOKI , SESHIMO TAKUYA , IMADA TAKAHIRO , FUJIMOTO IPPEI
IPC分类号： G03G15/20
摘要： PROBLEM TO BE SOLVED: To improve energy efficiency by power saving.SOLUTION: The fixing device includes: a fixing sleeve 21 as a rotating endless belt; a pressure roller 31 disposed on the outer peripheral side of the fixing sleeve 21 so as to press the fixing sleeve 21 and forming a nip portion from and to the fixing sleeve 21; and a sheet heating element 22 that is disposed in the inner peripheral side of the fixing sleeve 21 and having a resistance heating layer 22b for heating the fixing sleeve 21. The heat transmission from the sheet heating element 22 to the fixing sleeve 21 is controlled to limit the heat generation of the sheet heating element 22 within a heatproof temperature of the sheet heating element 22 set to a predetermined temperature or less.
摘要翻译：要解决的问题：通过省电提高能源效率。解决方案：定影装置包括：作为旋转环形带的定影套筒21; 设置在定影套筒21的外周侧的加压辊31，以便按压定影套筒21并从定影套筒21形成夹持部分; 以及设置在定影套筒21的内周侧并具有用于加热定影套筒21的电阻加热层22b的片材加热元件22.从片材加热元件22到定影套筒21的热传递被控制为将片材加热元件22的热产生限制在预定温度以下的片材加热元件22的耐热温度下。版权所有（C）2013，JPO＆INPIT

50. 发明专利

JP2013057896A 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：JP2013057896A
公开(公告)日：2013-03-28
申请号：JP2011197411
申请日：2011-09-09
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： TOKUDA TETSUO , YOSHIKAWA MASAAKI , ISHII KENJI , YOSHINAGA HIROSHI , ARAI YUJI , TAKAGI HIROTADA , IWATANI NAOKI , YAMAGUCHI YOSHINORI , SESHIMO TAKUYA , IKEFUCHI YUTAKA , FUJIMOTO IPPEI , IMADA TAKAHIRO , GOTO SO , YOSHIURA ARINOBU , SHIMOKAWA TOSHIHIKO
IPC分类号： G03G15/20
摘要： PROBLEM TO BE SOLVED: To provide a fixing device capable of preventing damage to each component including a fixing belt by suppressing heat deformation of a heating member and the fixing belt to a prescribed amount or less, and to provide an image forming apparatus.SOLUTION: A fixing device comprises: a fixing belt 21; a heating pipe 22 which is constituted of a pipe-shaped metal body and heats up the fixing belt 21; a heater 25 which heats up the heating pipe 22 by radiation heat; a pressure roller 31 which makes the fixing belt 21 rotate; a nip forming member 26 which contacts with the pressure roller 31 via the fixing belt 21; a temperature sensor 28 for detecting a surface temperature of the fixing belt 21; a body control part 110 which controls the heater 25 so that the surface temperature of the fixing belt 21 is at a prescribed surface temperature on the basis of the detected surface temperature; and displacement detection means 27 which detects deformation of the heating pipe 22 via the fixing belt 21. When deformation of the heating pipe 22 is detected, heat transfer amount to the heating pipe 22 is reduced by the body control part 110.
摘要翻译：解决的问题：提供一种能够通过将加热部件和定影带的热变形抑制在规定量以下而能够防止对包括定影带的各成分的损伤的定影装置，并且提供图像形成装置。解决方案：定影装置包括：定影带21; 加热管22，其由管状金属体构成并加热定影带21; 加热器25，其通过辐射热加热加热管22; 使定影带21旋转的加压辊31; 经由定影带21与加压辊31接触的辊隙形成部件26; 用于检测定影带21的表面温度的温度传感器28; 基于检测到的表面温度控制加热器25使得定影带21的表面温度处于规定表面温度的本体控制部110; 以及检测加热管22经由定影带21的变形的位移检测单元27.当检测出加热管22的变形时，由加热管22的热传递量减少到主体控制部110。（C）2013，JPO＆INPIT

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