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61. 发明专利

JP2004303518A Heating device, fixing device using this and image forming apparatus using this fixing device 审中-公开
公开(公告)号：JP2004303518A
公开(公告)日：2004-10-28
申请号：JP2003093519
申请日：2003-03-31
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： KISHI KAZUTO , KATO YASUHISA , AMITA AKIYASU , OKAMOTO MASAMI , TSUKIOKA TAKATADA , TAKAGI HIROTADA
IPC分类号： G03G15/20 , H05B3/00
摘要： PROBLEM TO BE SOLVED: To prolong the service life of a capacitor when a heating device provided with the capacitor as an auxiliary power source is used in a fixing device, etc., of an image forming apparatus.
SOLUTION: A main heating body 2a and an auxiliary heating body 2b are provided in a heating part 2. Power is fed to the main heating body 2a from a main power source device 3, and to the auxiliary heating body 2b from an auxiliary power source device 4 using the capacitor C. Rising of temperature of a fixing roll 40 is sped up by carrying out power feeding from the capacitor C to the auxiliary heating body 2b. The voltage of the capacitor C is lowered by, for example, 0.1V/cell, when the device is in an energy saving mode, the temperature t0 of the fixing roll 40 detected by a temperature sensor S is higher than the room temperature, and power does not need to be fully fed to the auxiliary heating body 2b from the capacitor C in starting time; the service life is prolonged.
COPYRIGHT: (C)2005,JPO&NCIPI

62. 发明专利

JP2004296152A Heating device, fixing device using it, and image forming device using the fixing device 审中-公开
公开(公告)号：JP2004296152A
公开(公告)日：2004-10-21
申请号：JP2003084050
申请日：2003-03-26
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： KISHI KAZUTO , KATO YASUHISA , AMITA AKIYASU , OKAMOTO MASAMI , TSUKIOKA TAKATADA , TAKAGI HIROTADA
IPC分类号： G03G15/20 , H05B3/00
摘要： PROBLEM TO BE SOLVED: To accurately adjust a power supply amount from a power storage device to a heating element of a heating portion in a heating device which is used for a fixing device of an image forming device etc. and uses the power storage device.
SOLUTION: A heating portion 2 is provided with the main heating element 2a and an auxiliary heating element 2b; the main power supply device 3 supplies power to the heating element 2a; and the auxiliary power supply device 4 using an electric double-layer capacitor supplies power to the heating element 2b. A control means 8 increases or decreases average supply power per unit time after starting supplying of power from a capacitor C of the power supply device 4 to the heating element 2b, then controls to stop the supplying of the power to the heating element 2b, and accurately adjusts the power supply amount. The control for increasing or decreasing the average supply power per unit time to the heating element 2b can be achieved by varying cycles of turning on and off of a switch 9 to turn on and shutting off the supplying of the power to the heating element 2b.
COPYRIGHT: (C)2005,JPO&NCIPI

63. 发明专利

JP2004279542A Powder heating/cooling system, fixing device, and image forming apparatus 有权
标题翻译：粉末加热/冷却系统，固定装置和图像形成装置
公开(公告)号：JP2004279542A
公开(公告)日：2004-10-07
申请号：JP2003068100
申请日：2003-03-13
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： TOMITA KUNIHIKO , IWATA NAOTAKA , TAKAGI HIROTADA
IPC分类号： G03G15/20
摘要： PROBLEM TO BE SOLVED: To provide a powder heating/cooling system in which yield is improved, the scale and investment of facility are reduced, and maintenance cost thereafter is low, risk is low, and which optimally heats/cools powder in accordance with a type of powder, recording medium, etc.
SOLUTION: The system includes: a conveyance means 25 which forms a nip N by the contact of a heat endless belt 10 and a pressure endless belt 20 (a pair of rotary conveying members); a heating means 15 which heats particle 26 conveyed through the nip; and a cooling means 17 which cools powder after heated by the heating means 16. In such a powder heating/cooling system, a cooling means is composed of, for instance, a cooling body. The movable cooling body 18 is moved close to or away from the heat endless belt 10. In addition, the degree of cooling the powder by the cooling means can be altered by turning the cooling body to change the length of the face opposing the rotary conveying member or by adjusting the flow rate of a cooling medium flowing in the cooling body being a heat pipe.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：为了提供提高产量的粉末加热/冷却系统，设备的规模和投资减少，其后的维护成本低，风险低，并且最佳地加热/冷却粉末根据粉末，记录介质等的类型。解决方案：系统包括：传送装置25，其通过热循环带10和压力环形带20的接触形成辊隙N（一对旋转输送构件）; 加热装置15，其加热通过辊隙传送的颗粒26; 以及冷却装置17，其通过加热装置16加热后冷却粉末。在这种粉末加热/冷却系统中，冷却装置由例如冷却体组成。可移动冷却体18靠近或远离热循环带10移动。此外，通过冷却装置冷却粉末的程度可以改变，以改变与旋转输送相对的面的长度或者通过调节在作为热管的冷却体中流动的冷却介质的流量。版权所有（C）2005，JPO＆NCIPI

64. 发明专利

JP2004144846A 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：JP2004144846A
公开(公告)日：2004-05-20
申请号：JP2002307360
申请日：2002-10-22
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： TAKAGI HIROTADA , TOMITA KUNIHIKO , IWATA NAOTAKA , SATO MASAHIKO
IPC分类号： G03G15/20
摘要： PROBLEM TO BE SOLVED: To provide a fixing device and an image forming apparatus by which the constant quantity of heat necessary for fixing is continuously given in a fixing nip by keeping specified temperature. SOLUTION: A heating means possesses a supporting base body 13 where a fixing belt 3 is supported by a part including the area of the fixing nip L1 and heating elements 10-12 provided at the supporting base body 13, plurally divided in a direction orthogonal with the feeding direction of a recording material and arranged in parallel with the feeding direction of the recording material and generating the heat by energizing. Atemperature detecting elements 16-18 to detect the temperature of the fixing belt 3 are provided, and one of the temperature detecting elements 16-18 is installed at a more upstream position than the heating element 10 at a most upstream position in the feeding direction of the recording material in the supporting base body 13. The temperature of the heating element 10 at the most upstream position is controlled by the temperature detecting element 16 at an upstream position. COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：提供一种定影装置和图像形成装置，通过该定影装置和图像形成装置，通过保持规定的温度，在定影辊隙中连续施加固定所需的恒定量。解决方案：加热装置具有支撑基体13，其中定影带3由包括定影夹持部L1的区域和设置在支撑基体13处的加热元件10-12的部分支撑，多个分割成方向与记录材料的进给方向正交并且与记录材料的进给方向平行布置并通过激励产生热量。设置用于检测定影带3的温度的温度检测元件16-18，并且温度检测元件16-18中的一个被安装在比加热元件10更靠上游位置的上游位置记录材料在支撑基体13中。最上游位置处的加热元件10的温度由温度检测元件16在上游位置控制。版权所有（C）2004，JPO

65. 发明专利

JP2017083888A 定着装置及び画像形成装置有权
公开(公告)号：JP2017083888A
公开(公告)日：2017-05-18
申请号：JP2017003242
申请日：2017-01-12
申请人：株式会社リコー , Ricoh Co Ltd
发明人： UCHITANI TAKESHI , SATO MASAHIKO , ISHII KENJI , OGAWA SADAFUMI , KAWATA TEPPEI , YOSHIURA ARINOBU , SHIMOKAWA TOSHIHIKO , YAMAJI KENSUKE , HASE TAKEMASA , YUASA SHUTARO , YOSHIKAWA MASAAKI , TAKAGI HIROTADA , IMADA TAKAHIRO , GOTO SO , SUZUKI AKIRA , SESHITA TAKUYA , YOSHINAGA HIROSHI , SAITO KAZUYA , NAMEKATA SHINICHI , SEKI TAKAYUKI , ARAI YUJI , MINBU RYUICHI , YAMAGUCHI YOSHINORI , TAMAKI TOSHITARO , IKEBUCHI YUTAKA
IPC分类号： G03G15/20 , G03G21/00
摘要：【課題】ジャムや画像形成装置電源OFFなどの要因で定着部材が突然、異常停止する際に定着部材の過昇温が生じる場合であっても、定着部材のキンクを発生させない。【解決手段】加熱源と、前記加熱源によって部分加熱され、記録媒体の未定着画像が担持された側を加熱する回転可能な定着部材と、前記定着部材に圧接し、前記定着部材との間にニップ部を形成する回転可能な加圧部材と、前記定着部材又は前記加圧部材を回転させる回転駆動手段と、を備えて構成される定着装置において、前記定着部材が装置電源オン状態にて定着処理終了以外の理由で停止する際に、その定着部材停止後に前記定着部材を少なくとも所定量回転させる。【選択図】図2

66. 发明专利

JP2014240989A 定着装置および画像形成装置有权
标题翻译：固定装置和图像形成装置
公开(公告)号：JP2014240989A
公开(公告)日：2014-12-25
申请号：JP2014199785
申请日：2014-09-30
申请人：株式会社リコー , Ricoh Co Ltd
发明人： TOKUDA TETSUO , YOSHIKAWA MASAAKI , ISHII KENJI , YOSHINAGA HIROSHI , ARAI YUJI , TAKAGI HIROTADA , IWATANI NAOKI , IKEFUCHI YUTAKA , SESHIMO TAKUYA , FUJIMOTO IPPEI , YAMAGUCHI YOSHINORI , YOSHIURA ARINOBU , IMADA TAKAHIRO , GOTO SO , SHIMOKAWA TOSHIHIKO
IPC分类号： G03G15/20
摘要：【課題】定着画像の画質を低下させることなく記録媒体の定着部材および加圧部材に対する巻きこみを防止することができる定着装置および画像形成装置を提供する。【解決手段】可撓性を有する無端状の定着ベルトと、定着ベルトに対向するよう設置される加圧ローラ31と、定着ベルトの内周側に設置され定着ベルトを介して加圧ローラ31に圧接し定着ベルトと加圧ローラ31により未定着画像を記録媒体に定着する定着ニップ部28を形成するニップ形成部材26と、を備えた定着装置20において、ニップ形成部材26は、定着ニップ部28における記録媒体搬送方向の下流側に加圧ローラ31の外周面に沿う円弧形状部26bと、定着ニップ部28より記録媒体搬送方向の下流側に、加圧ローラ31の方向に加圧ローラ31と非接触となるよう突出した突起部26aとを有する。【選択図】図8
摘要翻译：要解决的问题：提供一种防止记录介质卷入固定构件和加压构件而不降低固定图像的质量的定影装置和图像形成装置。解决方案：定影装置20包括：柔性的，无端定影带; 设置成与定影带相对的加压辊31; 以及设置在定影带的内周侧的辊隙形成构件26，并且经由定影带与加压辊31压力接触，以形成定影夹持部28，其中定影带和加压辊31将未固定的图像固定到记录介质。辊隙形成构件26包括：在记录介质输送方向上在定影夹持部28的下游侧沿加压辊31的外周面延伸的弧形部26b; 以及在记录介质输送方向上与定影夹持部28相比在下游侧与加压辊31突出的突起26a。

67. 发明专利

JP2014174370A 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：JP2014174370A
公开(公告)日：2014-09-22
申请号：JP2013047698
申请日：2013-03-11
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： TAKAGI HIROTADA , ISHII KENJI , YOSHIURA ARINOBU , YOSHINAGA HIROSHI
IPC分类号： G03G15/20
摘要： PROBLEM TO BE SOLVED: To provide a fixing device with a simple configuration capable of achieving energy saving and a reduction in first print time, preventing thermal deterioration for various types of sheets, and improving productivity.SOLUTION: A fixing device includes a rotatable fixing member, a heat source that heats the fixing member, a non-rotatable nip forming member that is brought into contact with the fixing member inside the fixing member, and a pressure member that forms a nip with the nip forming member with the fixing member therebetween. The fixing device further includes a heat transfer assisting member that is brought into contact with the fixing member to assist heat transfer of the fixing member; and the heat transfer assisting member is formed to extend in a rotation shaft direction of the fixing member centering around a central part in the rotation shaft direction of the fixing member, and has a large heat conductance in end part areas than in a central part area in the rotation shaft direction of the fixing member.
摘要翻译：要解决的问题：提供具有能够实现节能和缩短第一打印时间的简单配置的定影装置，防止各种片材的热劣化，并提高生产率。解决方案：一种定影装置，包括可旋转的固定构件加热固定部件的热源，与固定部件内部的固定部件接触的不可转动的辊隙形成部件，以及与夹持部形成部件之间形成夹持部的固定部件的压力部件。定影装置还包括传热辅助构件，其与固定构件接触以辅助固定构件的热传递; 并且所述传热辅助部件形成为沿着所述固定部件的旋转轴方向上的中心部分的所述固定部件的旋转轴方向延伸，并且在端部区域中比在中央部区域具有大的导热性在固定构件的旋转轴方向上。

68. 发明专利

JP2014048487A 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：JP2014048487A
公开(公告)日：2014-03-17
申请号：JP2012191641
申请日：2012-08-31
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： YAMAGUCHI YOSHINORI , SEKI TAKAYUKI , ARAI YUJI , TAMAKI SHUNTARO , ISHII KENJI , OGAWA SADAFUMI , KAWADA TEPPEI , SHIMOKAWA TOSHIHIKO , YOSHIURA ARINOBU , YAMAJI KENSUKE , TAKAGI HIROTADA , IWATANI NAOKI , IMADA TAKAHIRO , SUZUKI AKIRA
IPC分类号： G03G15/20
摘要： PROBLEM TO BE SOLVED: To simplify the structure of a nip formation member to reduce cost.SOLUTION: A fixing device 20 includes: a rotatable endless fixing belt 21; a heater 25 for heating the fixing belt 21; a pressure roller 31 arranged on the outer circumferential side of the fixing belt 21 to come into pressure contact with the fixing belt 21; a nip formation member 26 arranged on the side of an inner circumferential side of the fixing belt 21 and brought into pressure contact with the pressure roller 31 via the fixing belt 21 to form a nip part N; and a reinforcement member 23 fixed on an inner diameter part of the fixing belt 21 to support the nip formation member 26 from a side opposite the nip part N. A sliding sheet 22 is provided between the nip formation member 26 and the inner circumferential surface of the fixing belt 21. The sliding sheet 22 is held by holding means 27 arranged in a member different from the nip formation member 26, in close contact with a surface of the nip formation member 26 facing the nip part N.
摘要翻译：要解决的问题：为了简化辊隙形成构件的结构以降低成本。解决方案：定影装置20包括：可旋转环形定影带21; 用于加热定影带21的加热器25; 设置在定影带21的外周侧的压力辊31与定影带21压力接触; 设置在定影带21的内周侧侧的辊隙形成构件26，并通过定影带21与加压辊31压力接触，形成压区N; 以及固定在定影带21的内径部分上的加强构件23，以从辊隙部分N的相对侧支撑辊隙形成构件26.滑动片22设置在辊隙形成构件26与内周面定影带21.滑动片22由布置在不同于辊隙形成构件26的构件中的保持装置27保持，与压区形成构件26的面向夹持部分N的表面紧密接触。

69. 发明专利

JP2013186394A Fixation device and image formation 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：JP2013186394A
公开(公告)日：2013-09-19
申请号：JP2012053106
申请日：2012-03-09
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： OGAWA SADAFUMI , YOSHIKAWA MASAAKI , ISHII KENJI , KAWADA TEPPEI , YOSHIURA ARINOBU , SHIMOKAWA TOSHIHIKO , YAMAJI KENSUKE , ARAI YUJI , YAMAGUCHI YOSHINORI , TAKAGI HIROTADA , IWATANI NAOKI , IMADA TAKAHIRO , GOTO SO , SUZUKI AKIRA
IPC分类号： G03G15/20
CPC分类号： G03G15/2064 , G03G15/2053 , G03G2215/2035
摘要： PROBLEM TO BE SOLVED: To provide a fixation device having a separation member capable of preventing winding up over time as well as preventing contact with a fixation belt surface, and to provide an image formation apparatus having the fixation device.SOLUTION: A fixation device 20 includes: a flexible endless belt 21 capable of travelling; a nip formation member 41 provided contactable with an inner peripheral surface of the endless belt 21; a pressure member 31 for pressure-contacting with the nip formation member 41 through the endless belt 21 to form a nip part; and a flange 43 for retaining the endless belt 21 while allowing travelling thereof. The transfer paper is conveyed through the nip part. The fixation device further includes: a separation member 32 having a contact part 32a movably held by the flange 43 and configured to separate the endless belt 21 and the transfer paper. The separation member 32 is held so as to set a gap with the endless belt 21 to be a gap optimal for separating the transfer paper by making the contact part 32a contact with the endless belt 21.
摘要翻译：要解决的问题：提供一种固定装置，其具有能够防止随时间的卷绕以及防止与定影带表面接触的分离构件，并且提供具有该固定装置的图像形成装置。解决方案：固定装置20 包括：能够行进的柔性环形带21; 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，用于通过环形带21与辊隙形成构件41压力接触以形成咬合部; 以及用于保持环形带21同时允许其行进的凸缘43。转印纸通过辊隙部分传送。固定装置还包括：分离构件32，其具有由凸缘43可移动地保持并构造成分离环形带21和转印纸的接触部分32a。通过使接触部32a与环形带21相接触，分离部件32被保持为与环形带21间的间隙成为最佳分离转印纸的间隙。

70. 发明专利

JP2013186259A 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：JP2013186259A
公开(公告)日：2013-09-19
申请号：JP2012050609
申请日：2012-03-07
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： OGAWA SADAFUMI , ISHII KENJI , KAWADA TEPPEI , YOSHIURA ARINOBU , SHIMOKAWA TOSHIHIKO , YAMAJI KENSUKE , UCHITANI TAKESHI , HASE TAKAMASA , YUASA SHUTARO , YOSHIKAWA MASAAKI , TAKAGI HIROTADA , IWATANI NAOKI , IMADA TAKAHIRO , GOTO SO , SUZUKI AKIRA , SESHIMO TAKUYA , ARAI YUJI , YAMAGUCHI YOSHINORI
IPC分类号： G03G15/20
摘要： PROBLEM TO BE SOLVED: To provide a fixing device capable of improving separability of a recording medium from the fixing device, and an image forming apparatus.SOLUTION: A fixing device according to the present invention includes: an endless fixing belt 21 that has flexibility; a heater 25 that heats the fixing belt 21; a pressure roller 31 that comes into pressure contact with the fixing belt 21; a nip forming member 26 that is included in the fixing belt 21, and presses the fixing belt 21 against the pressure roller 31 to form a nip part; and a contact member 28 that contacts the fixing belt 21 from the outside of the fixing belt 21 at an exit of the nip part.
摘要翻译：要解决的问题：提供一种能够改善记录介质与定影装置的分离性的定影装置和图像形成装置。解决方案根据本发明的定影装置包括：具有柔性的环形定影带21; 加热定影带21的加热器25; 与定影带21压力接触的加压辊31; 包括在定影带21中的辊隙形成构件26，并将定影带21压靠在加压辊31上以形成辊隙部; 以及在夹持部的出口处从定影带21的外侧与定影带21接触的接触部件28。

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