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1. 发明专利

JP2014174358A Fixing device and image forming apparatus including the same 审中-公开
标题翻译：固定装置和图像形成装置，包括它们
公开(公告)号：JP2014174358A
公开(公告)日：2014-09-22
申请号：JP2013047448
申请日：2013-03-11
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： ISHII KENJI , YOSHINAGA HIROSHI , UCHITANI TAKESHI , OGAWA SADAFUMI , IWATANI NAOKI , SESHIMO TAKUYA , IMADA TAKAHIRO , GOTO SO , HASE TAKAMASA , SHIMOKAWA TOSHIHIKO , YUASA SHUTARO , KAWADA TEPPEI , YAMAJI KENSUKE , SUZUKI AKIRA , TAKAGI HIROTADA , YOSHIURA ARINOBU
IPC分类号： G03G15/20
摘要： PROBLEM TO BE SOLVED: To improve slidability of a fixing belt to extend the life of a fixing device.SOLUTION: A rotatable fixing belt 104 (fixing member) heated by a halogen heater 116 (heat source) and held by a flange 114 (holding member) at both right and left ends is applied with pressure by a pressure roller 102 (pressure member). Inside the fixing belt 104, the pressure roller 102 forms a nip part 122 with a nip forming member 106, and between the nip forming member 106 and the fixing belt 104, a cloth-like slide sheet 108b (slide member) is installed, which contains lubricant 112 and is molded so that a fiber recessed groove direction 130b (groove direction) becomes identical to a slide direction of the fixing belt 104. A lubricant circulation member 110a holds the lubricant 112 to be applied to the slide sheet 108b on the upstream side of the nip part 122, and applies the lubricant 112 to the fixing belt 104 to supply the lubricant 112 to the downstream side of the nip part 122.
摘要翻译：要解决的问题：提高定影带的滑动性以延长定影装置的使用寿命。解决方案：由卤素加热器116（热源）加热并由凸缘114保持的可旋转定影带104（固定构件）（保持构件）通过加压辊102（压力构件）施加压力。在定影带104的内部，加压辊102与辊隙形成部件106形成夹持部122，并且在辊隙形成部件106和定影带104之间，安装有布状的滑动片108b（滑动部件）包含润滑剂112并且被模制成使得纤维凹槽方向130b（槽方向）变得与定影带104的滑动方向相同。润滑剂循环构件110a将润滑剂112保持在上游的滑动片108b上并将润滑剂112施加到定影带104，以将润滑剂112供给到夹持部122的下游侧。

2. 发明专利

JP2014098737A Image forming apparatus 审中-公开
标题翻译：图像形成装置
公开(公告)号：JP2014098737A
公开(公告)日：2014-05-29
申请号：JP2012249077
申请日：2012-11-13
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： SESHIMO TAKUYA , SATO MASAHIKO , YOSHIKAWA MASAAKI , YOSHINAGA HIROSHI , IWATANI NAOKI , TAKAGI HIROTADA , IMADA TAKAHIRO , GOTO SO , SUZUKI AKIRA , ISHII KENJI , OGAWA SADAFUMI , KAWADA TEPPEI , YOSHIURA ARINOBU , SHIMOKAWA TOSHIHIKO , YAMAJI KENSUKE , UCHITANI TAKESHI , HASE TAKAMASA , YUASA SHUTARO
IPC分类号： G03G15/20
CPC分类号： G03G15/205 , G03G2215/2035
摘要： PROBLEM TO BE SOLVED: To suppress power consumption required to maintain a fixing temperature, which is unnecessary, until other operating units are started up.SOLUTION: An image forming apparatus acquires, in returning from a stand-by mode or a sleep mode, image data as warm-up time estimation information for estimating a warm-up time required to increase a temperature of a fixing belt 121 to a target fixing temperature, and when the acquired image data is monochrome image data, performs control to delay a timing to start heating the fixing belt.
摘要翻译：要解决的问题：为了抑制维持不需要的定影温度所需的功率消耗，直到其他操作单元启动为止。解决方案：图像形成装置在从待机模式或睡眠模式返回时获取图像数据作为用于估计将定影带121的温度升高到目标定影温度所需的预热时间的预热时间估计信息，并且当获取的图像数据是单色图像数据时，执行控制以延迟开始的定时加热定影带。

3. 发明专利

JP2013195947A Fixation device and image formation device 有权
标题翻译：固定装置和图像形成装置
公开(公告)号：JP2013195947A
公开(公告)日：2013-09-30
申请号：JP2012065798
申请日：2012-03-22
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： IMADA TAKAHIRO , YOSHIKAWA MASAAKI , ISHII KENJI , ARAI YUJI , OGAWA SADAFUMI , TAKAGI HIROTADA , IWATANI NAOKI , YAMAGUCHI YOSHINORI , YOSHIURA ARINOBU , KAWADA TEPPEI , GOTO SO , SHIMOKAWA TOSHIHIKO , YAMAJI KENSUKE , SUZUKI AKIRA
IPC分类号： G03G15/20
摘要： PROBLEM TO BE SOLVED: To eliminate poor fixation and defective paper conveyance due to bending of a support stay caused by loading, without increasing the number of parts.SOLUTION: The shape of a fixation belt 11 during rotation is restricted by a belt guide 12. A nip formation member 14 makes the fixation belt 11 come in contact with a pressure roller 13 in a prescribed area of a circumferential direction along the axial direction of the pressure roller 13 to form a nip. A support stay 15 supports the nip formation member 14 against a pressure direction by the pressure roller 13. The fixation belt 11 is heated from inside by a heater 16. The support stay 15 is configured by overlapping at least two kinds of metals having different linear expansion coefficients in a pressure direction, a high expansion side metal 151 and a low expansion side metal 152. The side closer to the pressure roller 13 is the high expansion side metal 151.
摘要翻译：要解决的问题：为了消除由于加载导致的支撑支柱的弯曲而导致的不良固定和纸输送不良，而不增加部件数量。解决方案：旋转期间的定影带11的形状受到带引导件12的限制。辊隙形成构件14使得定影带11沿着加压辊13的轴向在周向的规定区域中与加压辊13接触以形成辊隙。支撑支撑件15通过加压辊13支撑压力形成构件14抵抗压力方向。固定带11由加热器16从内部加热。支撑撑条15通过将至少两种具有不同线性的金属压力方向的膨胀系数，高膨胀侧金属151和低膨胀侧金属152.靠近加压辊13的一侧是高膨胀侧金属151。

4. 发明专利

JP2013195862A 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：JP2013195862A
公开(公告)日：2013-09-30
申请号：JP2012064642
申请日：2012-03-22
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： YUASA SHUTARO , ISHII KENJI , OGAWA SADAFUMI , KAWADA TEPPEI , YOSHIURA ARINOBU , SHIMOKAWA TOSHIHIKO , YAMAJI KENSUKE , UCHITANI TAKESHI , HASE TAKAMASA , YOSHIKAWA MASAAKI , TAKAGI HIROTADA , IWATANI NAOKI , IMADA TAKAHIRO , GOTO SO , SUZUKI AKIRA , SESHIMO TAKUYA
IPC分类号： G03G15/20
摘要： PROBLEM TO BE SOLVED: To provide a fixing device and an image forming apparatus, which effectively prevent a failure due to a local increase in a surface temperature of a fixing roller after transporting a sheet, causing an abnormal image such as hot-offset to a fixed image on a recording medium in the following series of transport actions.SOLUTION: If a detected temperature detected by temperature detection means exceeds a predetermined threshold when a series of sheet transport actions are finished, an idle rotation mode of rotating a fixing roller and a pressure roller is executed in the state of stopping heating the fixing roller with heating means (a step S7). Further, the executing time of the idle rotation mode is varied (steps S14, 16, 17, 19, 21, and 22) on the basis of information of a recording medium related to the series of transporting actions (a step S2) and information of the recording medium related to a following series of transporting actions (a step S10).
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，其有效地防止由于传送片材之后定影辊的表面温度的局部增加而导致的故障，导致诸如热偏移的异常图像到固定图像在记录介质上的一系列传送动作。解决方案：如果在一系列纸张传送动作结束时由温度检测装置检测到的检测到的温度超过预定阈值，则转动定影辊和在加热装置停止加热定影辊的状态下执行加压辊（步骤S7）。此外，基于与一系列传送动作相关的记录介质的信息（步骤S2）和信息，改变空闲旋转模式的执行时间（步骤S14,16,17,19,21和22）与步骤S10相关的记录介质。

5. 发明专利

JP2013195858A 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：JP2013195858A
公开(公告)日：2013-09-30
申请号：JP2012064614
申请日：2012-03-22
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： IWATANI NAOKI , SATO MASAHIKO , YOSHIKAWA MASAAKI , YOSHINAGA HIROSHI , ISHII KENJI , OGAWA SADAFUMI , TAKAGI HIROTADA , UCHITANI TAKESHI , SESHIMO TAKUYA , IMADA TAKAHIRO , GOTO SO , SUZUKI AKIRA , KAWADA TEPPEI , SHIMOKAWA TOSHIHIKO , YOSHIURA ARINOBU , HASE TAKAMASA , YUASA SHUTARO , YAMAJI KENSUKE
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 fixing device and an image forming apparatus in which, when a pressure rotating body is moved to a fixing belt in the separation direction by a pressure reducing mechanism, engagement of a pressure rotating body gear with a counterpart gear engaging with that gear is likely to be maintained without enlarging a moving range of the pressure rotating body so much.SOLUTION: In a fixing device, a pressure rotating body 31 is provided which is rotated and driven by a driving force inputted from a driving source 71, and pressure reducing mechanisms 63, 68, 69 are also provided in which the pressure rotating body 31 is moved against a fixing belt 21 in the separating direction to reduce a pressure contact force of the pressure rotating body 31 to the fixing belt 21. Then, the pressure rotating body 31 is held by a first holding member 43 having a notch 43a whose one end side in the width direction extending to the fixing belt 21 in the direction in the pressure contact direction is formed, and also held by a second holding member 63 having a slot 63b whose other end side in the width direction extending in the direction of intersecting with the pressure contact direction is formed.
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，其中当压力旋转体通过减压机构沿分离方向移动到定影带时，压力旋转体齿轮与对应齿轮的接合在不增加压力旋转体的移动范围的情况下，可能维持与该齿轮的接合。解决方案：在定影装置中，设置有压力旋转体31，该压力旋转体31由从驱动源输入的驱动力旋转和驱动 71还设有减压机构63,68,69，其中压力旋转体31沿分离方向抵靠定影带21移动，以减小压力旋转体31对定影带21的压力接触力。然后，压力旋转体31被第一保持构件43保持，该第一保持构件43具有切口43a，该切口43a的宽度方向的一端侧沿着压榨方向延伸至定影带21 形成再接触方向，并且还由具有狭缝63b的第二保持构件63保持，第二保持构件63形成沿与压接方向交叉的方向延伸的宽度方向上的另一端侧。

6. 发明专利

JP2013186352A 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：JP2013186352A
公开(公告)日：2013-09-19
申请号：JP2012052373
申请日：2012-03-08
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： SUZUKI AKIRA , YOSHIKAWA MASAAKI , ISHII KENJI , OGAWA SADAFUMI , UCHITANI TAKESHI , TAKAGI HIROTADA , IWATANI NAOKI , SESHIMO TAKUYA , YOSHIURA ARINOBU , KAWADA TEPPEI , IMADA TAKAHIRO , GOTO SO , HASE TAKAMASA , SHIMOKAWA TOSHIHIKO , ARAI YUJI , YAMAGUCHI YOSHINORI , YUASA SHUTARO , YAMAJI KENSUKE
IPC分类号： G03G15/20
摘要： PROBLEM TO BE SOLVED: To provide a fixing device of simple configuration that restricts an endless belt skew by a method without using a belt skew restricting member.SOLUTION: A fixing device has a pressure member 31 that forms a pressing area 41 disposed in firm contact with a pressure rotor 21 from the inner circumferential side of an endless belt 11. In the pressing area 41, the endless belt 11 and pressure rotor 21 conveys a recording medium P while sandwiching it between them. A pressing member 31 is fixed to a support member 51, and an endless belt 11 slides over the pressing member 31. A fixing area 42 is made narrower than the pressing area 41 formed by the pressing member 31, and an area where the pressure rotor 21 does not sandwich the endless belt 11 is located at the end of the pressing area 41. The rotating speed at which the endless belt 11 is rotated following the pressure rotor 21 at the end of the pressure area 41 is made lower than that in almost all areas other than the pressing area 41. The endless belt 11 obtains from the pressure rotor 21 rotation drive force sufficient for slide friction resistance acting on the pressing member 31 side face of it during the rotation thereof.
摘要翻译：要解决的问题：提供一种简单结构的定影装置，其通过不使用带歪斜限制构件的方法限制环形带歪斜。解决方案：定影装置具有压力构件31，压力构件31形成紧密配合的按压区域41 具有来自环形带11的内周侧的压力转子21.在按压区域41中，环形带11和压力转子21将记录介质P夹在它们之间。按压部件31固定在支撑部件51上，环形带11在按压部件31上滑动。固定区域42比由按压部件31形成的按压区域41窄， 21不夹住环形带11位于按压区域41的端部。环形带11在压力区域41的端部处的压力转子21之后旋转的转速比几乎除了按压区域41之外的所有区域。环形带11在其旋转期间从压力转子21获得足够的作用于其按压构件31侧面上的滑动摩擦阻力的旋转驱动力。

7. 发明专利

JP2013186197A 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：JP2013186197A
公开(公告)日：2013-09-19
申请号：JP2012049633
申请日：2012-03-06
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： SUZUKI AKIRA , TAKAGI HIROTADA , YOSHIKAWA MASAAKI , ISHII KENJI , OGAWA SADAFUMI , KAWADA TEPPEI , YOSHIURA ARINOBU , IWATANI NAOKI , YAMAGUCHI YOSHINORI , IMADA TAKAHIRO , GOTO SO , SHIMOKAWA TOSHIHIKO , YAMAJI KENSUKE , ARAI YUJI
IPC分类号： G03G15/20
摘要： PROBLEM TO BE SOLVED: To provide a fixing device improving separability of a recording medium without reducing a radius of curvature of an endless belt.SOLUTION: A fixing device includes an endless belt 11, a pressure rotation body 21 and a pressure member 31 in pressure contact with the pressure rotation body 21 from an inner peripheral side of the endless belt 11 to form a fixing nip 41 and conveys a paper sheet P by holding the paper sheet P by the endless belt 11 and the pressure rotation body 21 at the fixing nip 41. A portion 31a projecting to the pressure rotation body 21 side from a conveyance position of the paper sheet P at the fixing nip 41 is provided at a portion away from a rear end of the fixing nip 41 of the endless belt 11 to a downstream side in a conveyance direction of the paper sheet P. The magnitude of restoring force of the paper sheet P for separating the paper sheet P becomes larger than restoring force acting on paper sheets P which are continuously conveyed without being separated from the endless belt 11 when a distance from a near belt center of the endless belt 11 is constant in the longitudinal direction by the portion 31a. Accordingly, separability of the paper sheet P from the endless belt 11 is improved.
摘要翻译：要解决的问题：提供一种改善记录介质的分离性而不减小环形带的曲率半径的定影装置。解决方案：一种定影装置包括环形带11，压力旋转体21和压力压力构件31 与环形带11的内周侧与压力旋转体21接触以形成定影辊隙41，并且通过在定影辊隙处通过环形带11和压力旋转体21保持纸张P来输送纸张P. 在环形带11的定影辊隙41的后端远离下游侧的部分设置有从定影辊隙41处的纸张P的输送位置向压力旋转体21侧突出的部分31a 在纸张P的输送方向的一侧。用于分离纸张P的纸张P的恢复力的大小变得大于作用在连续传送的纸张P上的恢复力w 当距环形带11的近皮带中心的距离在纵向方向上由部分31a保持一定距离时，不会与环形带11分离。因此，纸张P与环形带11的分离性提高。

8. 发明专利

JP2013164451A 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：JP2013164451A
公开(公告)日：2013-08-22
申请号：JP2012026165
申请日：2012-02-09
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： HASE TAKAMASA , SATO MASAHIKO , NAMEKATA SHINICHI , ISHII KENJI , UCHITANI TAKESHI , OGAWA SADAFUMI , KAWADA TEPPEI , YOSHIURA ARINOBU , SHIMOKAWA TOSHIHIKO , YUASA SHUTARO , YAMAJI KENSUKE , YOSHIKAWA MASAAKI , YOSHINAGA HIROSHI , TAKAGI HIROTADA , IWATANI NAOKI , IMADA TAKAHIRO , GOTO SO , SESHIMO TAKUYA , SUZUKI AKIRA , SAITO KAZUYA
IPC分类号： G03G15/20
摘要： PROBLEM TO BE SOLVED: To provide a fixing device capable of suppressing the occurrence of plastic deformation in which the central part of a fixing member is depressed toward inside, and an image forming apparatus.SOLUTION: A control unit 200 being control means carries power equal to or more than a predetermined value to a halogen heater 123 as a heat source to heat a fixing belt 121, when a pressure roller 122 as a pressure member is in a rotating state, and a position detection sensor 180 is outputting a signal (Low signal) that is output when pressure applied between the fixing belt 121 as a fixing member and the pressure roller 122 is equal to or more than applied pressure exerted by rotation of the fixing belt 121 along with the pressure roller 122.
摘要翻译：要解决的问题：提供一种能够抑制固定构件的中心部向内侧压缩的塑性变形的固定装置和图像形成装置。解决方案：作为控制装置的控制单元200承载功率相等当作为加压构件的加压辊122处于旋转状态时，作为加热定影带121的热源的卤素加热器123达到或大于预定值，位置检测传感器180输出信号（低信号），其作为固定构件的定影带121和加压辊122之间施加的压力等于或大于通过定影带121与加压辊122的旋转而施加的施加压力。

9. 发明专利

JP2013148709A 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：JP2013148709A
公开(公告)日：2013-08-01
申请号：JP2012008961
申请日：2012-01-19
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： YUASA SHUTARO , SATO MASAHIKO , YOSHIKAWA MASAAKI , ISHII KENJI , OGAWA SADAFUMI , IMADA TAKAHIRO , TAKAGI HIROTADA , SAITO KAZUYA , IWATANI NAOKI , SHIMOKAWA TOSHIHIKO , YAMAJI KENSUKE , KAWADA TEPPEI , HASE TAKAMASA , SESHIMO TAKUYA , UCHITANI TAKESHI , YOSHIURA ARINOBU , GOTO SO , SUZUKI AKIRA , YOSHINAGA HIROSHI
IPC分类号： G03G15/20
摘要： PROBLEM TO BE SOLVED: To provide a fixing device that prevents excessive temperature increase in a non-paper-passing region without reducing productivity.SOLUTION: The fixing device includes a first passage width W1 for allowing a recording medium to pass, a second passage width W2 which is larger than the first passage width W1 and including the first passage width W1, and a third passage width W3 which is smaller than the first passage width W1 and included in the first passage width W1. A heat source for heating a fixing member 21 includes: a first heat generation section 23a arranged in accordance with the first passage width W1; second heat generation sections 23b arranged at the ends not overlapping the first passage width W1 in the second passage width W2; and a third heat generation section 23c arranged in accordance with the third passage width W3.
摘要翻译：要解决的问题：提供一种防止非纸张通过区域过度升温而不降低生产率的定影装置。解决方案：固定装置包括用于允许记录介质通过的第一通道宽度W1，第二通道宽度 W2大于第一通道宽度W1并包括第一通道宽度W1，第三通道宽度W3小于第一通道宽度W1并包括在第一通道宽度W1中。用于加热定影构件21的热源包括：根据第一通道宽度W1布置的第一热产生部分23a; 布置在第二通道宽度W2中不与第一通道宽度W1重叠的端部的第二发热部23b; 以及根据第三通道宽度W3布置的第三发热部23c。

10. 发明专利

JP2013142796A 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：JP2013142796A
公开(公告)日：2013-07-22
申请号：JP2012003264
申请日：2012-01-11
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： KAWADA TEPPEI , SATO MASAHIKO , YOSHIKAWA MASAAKI , ISHII KENJI , YOSHINAGA HIROSHI , OGAWA SADAFUMI , IMADA TAKAHIRO , TAKAGI HIROTADA , SAITO KAZUYA , IWATANI NAOKI , YAMAJI KENSUKE , HASE TAKAMASA , SHIMOKAWA TOSHIHIKO , YUASA SHUTARO , SESHIMO TAKUYA , UCHITANI TAKESHI , YOSHIURA ARINOBU , GOTO SO , SUZUKI AKIRA
IPC分类号： G03G15/20
CPC分类号： G03G15/2053 , G03G15/2064 , G03G2215/2035
摘要： PROBLEM TO BE SOLVED: To improve the durability of a fixing belt in a fixing device for directly heating the fixing belt.SOLUTION: Both of axial ends of a rotatable and endless fixing belt 21 are held by belt holding members 40, and a heat source 23 and a nip forming member 24 are arranged inside the fixing belt 21. A nip part N is formed by abutting a pressure roller 22 on the fixing belt 21. A pressure roller 22 and both of the belt holding members 40 are arranged to be deviated in the axial direction without having an overlap region in the axial direction.
摘要翻译：要解决的问题：提高用于直接加热定影带的定影装置中的定影带的耐久性。解决方案：旋转和环形定影带21的轴向端部都由带保持构件40保持，并且热源 23和夹持形成构件24布置在定影带21的内部。通过将加压辊22邻接在定影带21上形成夹持部N.压力辊22和两个带束保持构件40被布置成偏离在轴向上不具有轴向重叠区域。

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