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71. 发明专利

JP2014232269A 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：JP2014232269A
公开(公告)日：2014-12-11
申请号：JP2013114133
申请日：2013-05-30
申请人：株式会社リコー , Ricoh Co Ltd
发明人： YUASA SHUTARO , YOSHIKAWA MASAAKI , SEKI TAKAYUKI , YOSHINAGA HIROSHI , ARAI YUJI , YAMAMOTO TAKESHI , MINBU RYUICHI , IKEFUCHI YUTAKA , SESHIMO TAKUYA , TAMAKI SHUNTARO , GOTO SO , IMADA TAKAHIRO , SAITO KAZUYA , SHIMOKAWA TOSHIHIKO , YAMAJI KENSUKE , SUZUKI AKIRA
IPC分类号： G03G15/20
摘要：【課題】定着動作が終了した後、熱源の余熱を効果的に利用することで省エネルギー化を促進できる定着装置および画像形成装置を提供すること。【解決手段】定着装置10は、定着ベルト21の内周側に定着ベルト21を加熱領域Aにおいて直接加熱するヒータ23と、定着ベルト21とヒータ23との間に設けられ、ヒータ23と対向し加熱領域Aをヒータ23から遮蔽する遮蔽部材28を備える。画像形成装置内の各部品の動作を制御するコントローラは、記録媒体Sの大きさおよび搬送速度より、記録媒体Sの搬送方向後端とニップ部Nにおいて接触する定着ベルト21の後端接触部21aを算出する。次いで、コントローラは、後端接触部21aが加熱領域Aを通過した場合に、遮蔽部材28を矢印X方向に移動させ記録媒体Sがニップ部Nを通過し終わった場合に、遮蔽部材28によって加熱領域Aをヒータ23から遮蔽する。【選択図】図5
摘要翻译：要解决的问题：提供一种能够通过有效利用定影操作之后的热源的废热来促进节能的定影装置和图像形成装置。解决方案：定影装置10在固定的内周侧带21：在加热区域A中直接加热定影带21的加热器23; 以及布置在定影带21和加热器23之间的面对加热器23并且将加热区域A从加热器23屏蔽的屏蔽构件28.用于控制图像形成装置中的部件的操作的控制器计算后端触点基于记录介质S的尺寸和传送速度，定影带21的与夹持部N中的记录介质S的传送方向再次接触的部分21a。当后端接触部 21a通过加热区域A时，控制器使屏蔽构件28沿箭头X方向移动，并且当记录介质S完全通过夹持部N时，借助屏蔽构件28将加热区域A从加热器23屏蔽。

72. 发明专利

JP2014224914A 定着装置およびこれを備えた画像形成装置有权
标题翻译：固定装置和图像形成装置，包括它们
公开(公告)号：JP2014224914A
公开(公告)日：2014-12-04
申请号：JP2013104181
申请日：2013-05-16
申请人：株式会社リコー , Ricoh Co Ltd
发明人： MINBU RYUICHI , YOSHIKAWA MASAAKI , SEKI TAKAYUKI , YAMAMOTO TAKESHI , IKEFUCHI YUTAKA , SESHIMO TAKUYA , TAMAKI SHUNTARO , GOTO SO , IMADA TAKAHIRO , SAITO KAZUYA , SHIMOKAWA TOSHIHIKO , YUASA SHUTARO , YAMAJI KENSUKE , SUZUKI AKIRA , YOSHINAGA HIROSHI , ARAI YUJI
IPC分类号： G03G15/20
CPC分类号： G03G15/2032 , G03G15/2017 , G03G15/2042
摘要：【課題】定着ベルトの均一加熱を図り、省エネルギー化を促進できるとともに、ファーストプリント時間を短縮できる定着装置およびこれを備えた画像形成装置を提供すること。【解決手段】定着ベルト21と、ヒータ23と、定着ベルト21を外周側で加圧する加圧ローラ22と、定着ベルト21の内周側で加圧ローラ22と対向してニップ部Nを形成するニップ形成部材24と、定着ベルト21とヒータ23との間に配置されヒータ23が定着ベルト21を加熱する加熱領域の大小を変更するよう移動可能に設けられた加熱領域変更部材29とを備え、ヒータ23による定着ベルト21の加熱の開始から記録紙Sのニップ部Nへの通過開始までは、加熱領域変更部材29が、加熱領域を最大にする加熱領域最大位置に移動し、加熱領域最大位置が、ヒータ23により加熱領域変更部材29が直接加熱される領域外の位置であるよう構成される。【選択図】図2
摘要翻译：要解决的问题：提供一种能够均匀加热定影带的定影装置，加速节能，并缩短第一打印时间; 以及包括其的图像形成装置。解决方案：定影装置包括定影带21，加热器23，对外周侧的定影带21施加压力的加压辊22，布置成与定影带21的内周侧上的压力辊22相对，以形成夹持部N;以及加热区域改变构件29，其布置在定影带21和加热器23之间，并且可移动地设置以改变定影带21的尺寸加热区域加热定影带21，其中加热区域改变构件29被配置为移动到加热区域最大位置，从加热器23开始加热定影带21直到记录时将加热区域的尺寸增加到最大值片材S开始通过夹持部分N，使得加热区域最大位置是加热器23直接加热加热区域改变构件29的区域之外的位置。

73. 发明专利

JP2014178608A 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：JP2014178608A
公开(公告)日：2014-09-25
申请号：JP2013053781
申请日：2013-03-15
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： YUASA SHUTARO , TAMAKI SHUNTARO , SEKI TAKAYUKI , YOSHINAGA HIROSHI , ARAI YUJI , MINBU RYUICHI , YAMAGUCHI YOSHINORI , SHIMOKAWA TOSHIHIKO , IKEFUCHI YUTAKA , SAITO KAZUYA
IPC分类号： G03G15/20
CPC分类号： G03G15/2017 , G03G15/2032 , G03G15/2039 , G03G15/2042 , G03G15/2067 , G03G15/2078 , G03G15/2082 , G03G2215/2035
摘要： PROBLEM TO BE SOLVED: To provide a fixing device capable of reducing a difference in temperature generated on the surface of a fixing member even when the fixing device includes a shield member.SOLUTION: A fixing device 20 includes a rotatable fixing belt 21, a halogen heater 23 that heats the fixing belt with radiation heat, a pressure roller 22 that is brought into contact with an outer peripheral surface of the fixing belt to form a nip part N, and a shield member 27 that shields heat from the halogen heater. In the fixing device, at the start of image formation, the shield member 27 is moved after the heating by the halogen heater is started, so as to change a radiation range of the radiation heat.
摘要翻译：要解决的问题：提供一种即使在固定装置包括屏蔽构件时也能够减少固定构件的表面上产生的温度差的定影装置。解决方案：定影装置20包括可旋转定影带21，卤素用辐射热加热定影带的加热器23，与定影带的外周面接触以形成咬合部分N的加压辊22以及屏蔽来自卤素加热器的热量的屏蔽部件27。在定影装置中，在图像形成开始时，屏蔽构件27在通过卤素加热器的加热开始之后移动，以便改变辐射热的辐射范围。

74. 发明专利

JP2014178604A 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：JP2014178604A
公开(公告)日：2014-09-25
申请号：JP2013053772
申请日：2013-03-15
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： IKEFUCHI YUTAKA , SEKI TAKAYUKI , ARAI YUJI , MINBU RYUICHI , YAMAGUCHI YOSHINORI , TAMAKI SHUNTARO , SHIMOKAWA TOSHIHIKO , YOSHINAGA HIROSHI , SAITO KAZUYA , YUASA SHUTARO
IPC分类号： G03G15/20
摘要： PROBLEM TO BE SOLVED: To provide a fixing device capable of accurately stopping a shield member at an intended position without being affected by backlash.SOLUTION: A fixing device 20 comprises: a rotatable fixing belt 21; a halogen heater 23 that heats the fixing belt with radiation heat; a pressure roller 22 that is brought into contact with an outer peripheral surface of the fixing belt to form a nip part N; a shield member 27 that is made movable between the fixing member and the heat source in a regular direction and a reverse direction so as to change, with the movement, the area of a heating target area α of the fixing belt 21 that is heated by the halogen heater 23; and a power transmission mechanism 46 that transmits power from a driving source to the shield member 27 to move the shield member in the regular direction and the reverse direction. When the fixing device 20 changes the area of the heating target area, it changes a direction of movement of the shield member to the regular direction X1 immediately before the shield member reaches an end point of the movement.
摘要翻译：要解决的问题：提供一种能够在不受间隙影响的情况下将屏蔽构件精确地停止在预定位置的固定装置。解决方案：定影装置20包括：可旋转定影带21; 用辐射热加热定影带的卤素加热器23; 压力辊22，其与定影带的外周面接触，形成压合部N; 屏蔽构件27，其能够在固定构件和热源之间沿常规方向和相反方向移动，以便随着移动而改变定影带21的加热目标区域α的面积，该面积被加热的定影带21的加热目标区域α的面积卤素加热器23; 以及动力传递机构46，其将来自驱动源的动力传递到屏蔽部件27，以沿正常方向和相反方向移动屏蔽部件。当定影装置20改变加热目标区域的面积时，其将屏蔽构件的移动方向改变为在屏蔽构件到达移动终点之前的正常方向X1。

75. 发明专利

JP2014174439A 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：JP2014174439A
公开(公告)日：2014-09-22
申请号：JP2013048950
申请日：2013-03-12
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： OGAWA SADAFUMI , YUASA SHUTARO , YAMAJI KENSUKE , YOSHINAGA HIROSHI , SEKI TAKAYUKI , ARAI YUJI , MINBU RYUICHI , YAMAGUCHI YOSHINORI , TAMAKI TOSHITARO , SAITO KAZUYA , IKEBUCHI YUTAKA , SHIMOKAWA TOSHIHIKO
IPC分类号： G03G15/20
摘要： PROBLEM TO BE SOLVED: To provide a fixing device capable of avoiding, in providing a nip forming member and its support member on an inner peripheral side of a fixing belt in addition to a heat source, a reduction in strength and thermal deformation of the members due to the application of heat thereto.SOLUTION: A fixing device 20 includes an endless belt that is a fixing belt 21, a pressure rotating body 24 that is brought into contact with an outer peripheral surface of the belt, a nip forming member 26 that is arranged inside the belt and forms a fixing nip part N with the pressure rotating body 24 with the belt therebetween, a support member that is arranged inside the belt and supports the nip forming member 26, and a heat source 23 that is arranged inside the belt. The support member 27 is attached with a heat transfer member having thermal conductivity equal to or higher than that of the support member 27, and connected with a frame of a device body.
摘要翻译：要解决的问题：提供一种定影装置，其能够避免除了热源之外在定影带的内周侧上设置夹持形成构件及其支撑构件，使得构件的强度和热变形的降低由于施加了热量，所以固定装置20包括作为定影带21的环形带，与带的外周面接触的压力旋转体24，夹持形成部件26，布置在皮带内部，并与压力旋转体24形成定影夹持部分N，其间具有皮带，支撑部件布置在皮带内并支撑夹持形成部件26，并且热源23布置在带。支撑构件27附接有导热率等于或高于支撑构件27的热传导构件，并且与装置主体的框架连接。

76. 发明专利

JP2014142428A 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：JP2014142428A
公开(公告)日：2014-08-07
申请号：JP2013009589
申请日：2013-01-22
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： SEKI TAKAYUKI , ARAI YUJI , YAMAGUCHI YOSHINORI , TAMAKI SHUNTARO , IKEFUCHI YUTAKA , SAITO KAZUYA
IPC分类号： G03G15/20
摘要： PROBLEM TO BE SOLVED: To provide a fixing apparatus which can be made relatively compact with a relatively simple mechanism, while preventing a non-paper passing area in a fixing belt from being excessively heated, and to provide an image forming apparatus.SOLUTION: A composite layer 21c is formed near an inner circumferential surface 21d (or on the inner circumferential surface) in a fixing belt 21. The composite layer 21c alternately includes: first formation parts 21c1 having a large thermal expansion coefficient and a small heat transfer coefficient; and second formation parts 21c2 having a small thermal expansion coefficient and a large heat transfer coefficient.
摘要翻译：要解决的问题：提供一种能够以相对简单的机构制造相对紧凑的定影装置，同时防止定影带中的非纸张通过区域被过度加热，并提供图像形成装置。解决方案：A 复合层21c形成在定影带21内的内周面21d（或内周面）附近。复合层21c交替地包括：具有大的热膨胀系数和小的传热系数的第一形成部21c1; 以及热膨胀系数小，传热系数大的第二形成部21c2。

77. 发明专利

JP2014074887A 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：JP2014074887A
公开(公告)日：2014-04-24
申请号：JP2013114137
申请日：2013-05-30
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： ARAI YUJI , SEKI TAKAYUKI , TAMAKI SHUNTARO , YAMAGUCHI YOSHINORI , ISHII KENJI , OGAWA SADAFUMI , KAWADA TEPPEI , YOSHIURA ARINOBU , SHIMOKAWA TOSHIHIKO , YAMAJI KENSUKE , YOSHIKAWA MASAAKI , TAKAGI HIROTADA , IWATANI NAOKI , IMADA TAKAHIRO , GOTO SO , SUZUKI AKIRA , YOSHINAGA HIROSHI , MINBU RYUICHI , SESHIMO TAKUYA , YAMAMOTO TAKESHI , SAITO KAZUYA , IKEFUCHI YUTAKA , YUASA SHUTARO
IPC分类号： G03G15/20
摘要： PROBLEM TO BE SOLVED: To provide a fixing device capable of suppressing heating of a shield member.SOLUTION: A fixing device includes: a rotatable endless fixing belt 21; a heat source 23 that heats the fixing belt 21; a nip forming member 24 disposed on the inner peripheral side of the fixing belt 21; an opposing member 22 that comes into contact with the nip forming member 24 from the outer peripheral side of the fixing belt 21 to form a nip part N with the fixing belt 21; and a shield member 27 that shields heat from the heat source 23. The shield member 27 is disposed to surround the heat source 23 and formed over the entire width direction of a recording medium passing area in a circumferential direction with ends on both sides, and is configured to be movable between a shield position where at least a part of the shield member 27 faces directly to the heat source 23 to shield the heat, and a retreat position where the portion facing directly to the heat source 23 is retreated from the shield position and heating suppression members 25 and 26 are disposed to be interposed between the heat source 23 and the shield member 27.
摘要翻译：要解决的问题：提供一种能够抑制屏蔽构件的加热的定影装置。解决方案：一种定影装置，包括：可旋转的环形定影带21; 加热定影带21的热源23; 设置在定影带21的内周侧的辊隙形成构件24; 与定影带21的外周侧与辊隙形成部件24接触的对置部件22，与定影带21形成辊隙部N; 以及屏蔽部件27，其从热源23遮蔽热量。遮蔽部件27配置成包围热源23，并且在两侧的端部沿圆周方向的记录介质通过区域的整个宽度方向上形成，被构造成能够在遮蔽部件27的至少一部分直接面向热源23的屏蔽位置之间移动以屏蔽热量;以及退避位置，其中与热源23直接相对的部分从屏蔽位置和加热抑制构件25和26设置在介于热源23和屏蔽构件27之间。

78. 发明专利

JP2014074885A 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：JP2014074885A
公开(公告)日：2014-04-24
申请号：JP2013100228
申请日：2013-05-10
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： SEKI TAKAYUKI , ARAI YUJI , YAMAGUCHI YOSHINORI , TAMAKI SHUNTARO , IKEFUCHI YUTAKA , SAITO KAZUYA
IPC分类号： G03G15/20
摘要： PROBLEM TO BE SOLVED: To provide a fixing device capable of reducing energy loss caused by a temperature rise or the like of a reflection member.SOLUTION: A shielding member 27 is arranged between a halogen heater 23 and a fixing belt 21 of the fixing device. A shielding part 48 of the shielding member 27 shields heat from the halogen heater 23 to the fixing belt 21. The heat reflectivity of the surface of at least the shielding part 48 facing the halogen heater 23 of the shielding member 27 is less than the heat reflectivity of the surface facing the halogen heater 23 of a reflection member 26.
摘要翻译：要解决的问题：提供一种能够减少由反射构件的升温等引起的能量损失的固定装置。解决方案：屏蔽构件27布置在定影装置的卤素加热器23和定影带21之间。屏蔽部件27的屏蔽部分48将热量从卤素加热器23屏蔽到定影带21.至少屏蔽部分48的面对屏蔽部件27的卤素加热器23的表面的热反射率小于热量反射构件26的面向卤素加热器23的表面的反射率。

79. 发明专利

JP2014059382A 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：JP2014059382A
公开(公告)日：2014-04-03
申请号：JP2012203281
申请日：2012-09-14
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： TAMAKI SHUNTARO , SEKI TAKAYUKI , ARAI YUJI , IWATANI NAOKI , YAMAGUCHI YOSHINORI , IKEFUCHI YUTAKA , SHIMOKAWA TOSHIHIKO
IPC分类号： G03G15/20
摘要： PROBLEM TO BE SOLVED: To provide a fixing device configured to rotatably support a shield member with a compact and simple mechanism.SOLUTION: A shield member 27 blocks heat from a halogen heater 23 to a fixing belt 21, and rotates to increase/decrease shielding area. A holding member 40 and a slide member 41 connected to the shield member 27 are provided with facing surfaces 404, 411 facing each other in an axial direction, respectively. A circular guide groove 405 extending in a peripheral direction of the shield member 27 is formed on the facing surface 404 of the holding member 40. A linear protrusion 412 to be fitted into the guide groove 405 is formed on the facing surface 411 of the slide member 41. The guide groove 405 and the linear protrusion 412 are slidable in the peripheral direction of the shield member 27.
摘要翻译：要解决的问题：提供一种构造成以紧凑且简单的机构可旋转地支撑屏蔽构件的定影装置。解决方案：屏蔽构件27阻挡来自卤素加热器23的热量到定影带21，并且旋转以增加/减少屏蔽区。与保护构件27连接的保持构件40和滑动构件41分别设置有沿轴向彼此面对的面对面404,411。在保持构件40的相对表面404上形成有沿屏蔽构件27的周向延伸的圆形导向槽405.在滑动件的相对表面411上形成有嵌合在引导槽405中的直线突起412 导向槽405和线状突起412可沿屏蔽部件27的周向方向滑动。

80. 发明专利

JP2014059335A 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：JP2014059335A
公开(公告)日：2014-04-03
申请号：JP2012202656
申请日：2012-09-14
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： ARAI YUJI , SEKI TAKAYUKI , IWATANI NAOKI , YAMAGUCHI YOSHINORI , TAMAKI TOSHITARO , SHIMOKAWA TOSHIHIKO , IKEBUCHI YUTAKA
IPC分类号： G03G15/20
摘要： PROBLEM TO BE SOLVED: To provide a fixing device capable of effectively suppressing a temperature rise of an end part due to a difference in sheet width by using the minimum number of heaters, to support sheets in various widths.SOLUTION: A fixing device 20 comprises: a rotatable fixing member 33 having flexibility and formed in an endless shape; a heat source 35 that heats the fixing member; and a pressure member 31 that comes into pressure contact with the fixing member, and passes a recording medium carrying an unfixed image through a nip part between the fixing member and the pressure member to fix the image. The fixing device 20 further includes a shield member 43 that is arranged between the inner surface of the fixing member and the heat source, rotatable in a circumferential direction of the fixing member, and shields radiation heat emitted from the heat source to the fixing member. The shield member rotates in one direction and the other direction from a reference position where a length of a part of the heat source not covered with the shield member substantially corresponds to a sheet width that is frequently used.
摘要翻译：要解决的问题：提供一种定影装置，其能够通过使用最少数量的加热器来有效地抑制由于纸张宽度的差异导致的端部部件的温度上升，以支撑各种宽度的片材。解决方案：定影装置20包括具有挠性并形成为环状的可旋转固定构件33; 加热固定部件的热源35; 以及与固定构件压力接触的压力构件31，并且通过固定构件和压力构件之间的夹持部分使带有未定影图像的记录介质通过以固定图像。定影装置20还包括屏蔽构件43，其被设置在固定构件的内表面和热源之间，可沿固定构件的圆周方向旋转，并且遮蔽从热源发射到固定构件的辐射热。屏蔽部件从未被遮蔽部件覆盖的热源的一部分的长度的基准位置的一个方向和另一个方向旋转，基本上对应于经常使用的片材宽度。

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