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1. 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

2. 发明专利

JP2014056007A 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：JP2014056007A
公开(公告)日：2014-03-27
申请号：JP2012199270
申请日：2012-09-11
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： IKEBUCHI YUTAKA , YOSHINAGA HIROSHI , UCHITANI TAKESHI , SESHITA TAKUYA , HASE TAKEMASA , YUASA SHUTARO
IPC分类号： G03G15/20
摘要： PROBLEM TO BE SOLVED: To provide a fixing device with a heat insulation member, having substantially the same size as a device having no heat insulation member, and configured to properly insulate various sizes of recording media from heat to prevent heat deterioration of a fixing member or hot offset.SOLUTION: A fixing device 20 includes: a flexible fixing member 21 which can be endlessly rotated; a heat source 25 for heating the fixing member inside the fixing member, and a pressure member 31 which is brought into pressure contact with the fixing member. A recording medium S with an unfixed image carried thereon passes through a nip part N between the fixing member and the pressure member to fix the image. A heat insulation member 50 is arranged between an inner surface of the fixing member and the heat source, and moves in a peripheral direction of the fixing member according to a width of the recording medium to block radiation heat emitted from the heat source to the fixing member.
摘要翻译：要解决的问题：为了提供一种具有隔热构件的定影装置，具有与不具有绝热构件的装置大致相同的尺寸，并且被构造成适当地将各种尺寸的记录介质隔离开来以防止定影构件的热劣化或热偏移。解决方案：定影装置20包括：可以不断旋转的柔性固定构件21; 用于加热定影构件内的固定构件的热源25和与固定构件压力接触的压力构件31。带有未定影图像的记录介质S通过固定构件和压力构件之间的夹持部分N以固定图像。绝热构件50设置在固定构件的内表面和热源之间，并且根据记录介质的宽度沿着定影构件的周向方向移动，以阻止从热源发射的辐射热到固定会员。

3. 发明专利

JP2017090632A 定着装置及び画像形成装置审中-公开
公开(公告)号：JP2017090632A
公开(公告)日：2017-05-25
申请号：JP2015219564
申请日：2015-11-09
申请人：株式会社リコー , Ricoh Co Ltd
发明人： ARAI YUJI , GOTO SO , SESHITA TAKUYA , IMADA TAKAHIRO
IPC分类号： G03G15/20
CPC分类号： G03G15/2053 , G03G15/2017 , G03G2215/2035
摘要：【課題】無端状の薄いベルトやフィルムを定着部材として用いる場合の組み立て性を向上させつつ、組み立て時に定着部材の破損が起こり難くする。【解決手段】回転可能な定着部材と、前記定着部材の長手方向両端をそれぞれ保持する保持部材と、前記定着部材の内周側に配され、前記定着部材を介して外側からかかる圧力を受けて定着ニップ部を形成するニップ形成部材と、前記ニップ形成部材にかかる圧力に対して前記ニップ形成部材を支持するステー部材と、前記保持部材を固定し、前記ステー部材の端部を外側に突出させて前記ステー部材の位置決めを行う位置決め部材とを少なくとも組み付けてユニット化した定着部材ユニットを有する定着装置において、前記位置決め部材のスラスト方向の動きを前記定着部材の内側に入り込む保持部材の長さ未満の移動量に制限する構成とした。【選択図】図6

4. 发明专利

JP2014174534A 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：JP2014174534A
公开(公告)日：2014-09-22
申请号：JP2013050253
申请日：2013-03-13
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： SUZUKI AKIRA , SESHITA TAKUYA , IMADA TAKAHIRO , GOTO SO , YAMAJI KENSUKE
IPC分类号： G03G15/20
摘要： PROBLEM TO BE SOLVED: To provide a fixing device of a simple configuration, in which a warm-up time and a first print time are improved and the temperature rise of an end can be prevented.SOLUTION: In the fixing device including a fixing rotary body, a pressure rotary body installed opposite to the fixing rotary body, a fixing nip formed by bringing the fixing rotary body and the pressure rotary body into contact with each other, a heating source heating the fixing rotary body, and a uniformly heating member coming into contact with the fixing rotary body, to uniformly heat the fixing rotary body, a heating range is located outside a fixing nip forming range, a first uniformly heating range is located in a central part region in the rotary axis direction of the fixing rotary body and between the downstream end of the fixing nip forming range and the upstream end of the heating range in the rotational direction of the fixing rotary body, and a second uniformly heating range is located closer to an end side than the first uniformly heating range in the rotary axis direction of the fixing rotary body and between the downstream end of the heating range and the upstream end of the fixing nip forming range in the rotational direction of the fixing rotary body.
摘要翻译：要解决的问题：提供一种简单的结构的定影装置，其中提高了预热时间和第一打印时间，并且可以防止端部的温度上升。解决方案：在包括定影旋转的定影装置主体，与固定旋转体相对设置的压力旋转体，通过使定影旋转体和压力旋转体彼此接触而形成的定影夹持部，加热定影旋转体的加热源和均匀加热部件与定影旋转体接触，使定影旋转体均匀地加热，加热范围位于定影辊隙形成范围之外，第一均匀加热范围位于定影旋转体的旋转轴线方向的中心部位并且在定影夹持形成范围的下游端与定影旋转体的旋转方向上的加热范围的上游端之间，并且将第二均匀加热范围定位为c 比固定旋转体的旋转轴方向上的第一均匀加热范围和加热范围的下游端与定影辊隙形成范围的上游端之间在固定旋转体的旋转方向上的端侧相差。

5. 发明专利

JP2014182174A Image forming apparatus 有权
标题翻译：图像形成装置
公开(公告)号：JP2014182174A
公开(公告)日：2014-09-29
申请号：JP2013054723
申请日：2013-03-18
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： SUZUKI AKIRA , SESHITA TAKUYA , IMADA TAKAHIRO , GOTO SO , YAMAJI KENSUKE
IPC分类号： G03G15/20
摘要： PROBLEM TO BE SOLVED: To provide a fixing apparatus capable of curbing the amount of heat to be transmitted from a fixing rotating body to a reflection member in a contact area during start-up, and capable of reducing an influence causing the elevation of temperature of the fixing rotating body to be slower in an area where an unfixed image passes, and an image forming apparatus using the fixing apparatus.SOLUTION: A fixing apparatus includes: a pressure rotating body 61 in pressure-contact with a fixing rotating body 51 to form a fixing nip 71; and heating means having a heating source 81 for heating the fixing rotating body 51, and a reflection member 82 for reflecting radiation heat from the heating source 81 toward the fixing rotating body 51. The fixing apparatus also includes a heat transmission member 83 which comes into contact with each of the reflection member 82 of the heating means and the fixing rotating body 51 to transmit heat between them. A contact area B1 of the heat transmission member 83 in contact with the fixing rotating body 51 is set in a position so as not to overlap an image passing area W, where an unfixed toner image supported by a recording medium P passes, in a rotation shaft direction of the fixing rotating body 51.
摘要翻译：要解决的问题：提供一种定影装置，其能够将启动期间从固定旋转体传递的热量抑制在接触区域中的反射构件，并且能够减少引起温度升高的影响固定旋转体在未定影图像通过的区域中较慢，以及使用该定影装置的图像形成装置。解决方案：定影装置包括：压力旋转体61，其与定影旋转体51压力接触，以形成定影辊隙71; 具有用于加热固定旋转体51的加热源81和用于将来自加热源81的辐射热反射到定影旋转体51的反射构件82的加热装置。定影装置还包括传热构件83，与加热装置的每个反射构件82和固定旋转体51接触，以在它们之间传递热量。与定影旋转体51接触的传热部件83的接触区域B1被设定为不与由记录介质P支撑的未定影调色剂图像通过的图像通过区域W重合，固定旋转体51的轴方向。

6. 发明专利

JP2014164223A A fixing device and an 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：JP2014164223A
公开(公告)日：2014-09-08
申请号：JP2013037008
申请日：2013-02-27
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： YOSHINAGA HIROSHI , SESHITA TAKUYA , IMADA TAKAHIRO , SUZUKI AKIRA
IPC分类号： G03G15/20
摘要： PROBLEM TO BE SOLVED: To prevent discoloration and deformation of a support member and a reflection member due to an increase in temperature, and prevent deflection of a nip forming member associated with the discoloration and deformation.SOLUTION: A fixing device 20 includes an endless, rotatable fixing belt 21, a nip forming member 24 that is disposed inside the fixing belt, an opposing rotating body 22 that is brought into contact with the nip forming member with the fixing belt therebetween to form a nip part between the fixing belt and the opposing rotating body, a heat source 23 that heats the fixing belt, and a support member 25 that supports the nip forming member. The support member includes a base part 25a that is brought into contact with the nip forming member, and at least one rising part 25b that rises from the base part in a pressing direction; and a light shielding film 23a shielding light from the heat source is disposed over the entire range or a part of the surface or the vicinity of the surface of the heat source 23 opposing to the support member 25.
摘要翻译：要解决的问题：防止由于温度升高引起的支撑构件和反射构件的变色和变形，并且防止与变色和变形相关联的辊隙形成构件的偏转。解决方案：定影装置20包括环形，可旋转定影带21，设置在定影带内部的辊隙形成构件24，与间隙形成构件接触的相对旋转体22，其间具有定影带，以在定影带和相对的定影带之间形成辊隙部分旋转体，加热定影带的热源23和支撑辊隙形成构件的支撑构件25。支撑构件包括与辊隙形成构件接触的基部25a和从按压方向从基部上升的至少一个上升部25b; 遮蔽来自热源的光的遮光膜23a设置在与支撑构件25相对的热源23的表面或附近的整个范围或一部分上。

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