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1. 发明专利

JP2014174440A 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：JP2014174440A
公开(公告)日：2014-09-22
申请号：JP2013048951
申请日：2013-03-12
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： ARAI YUJI , SEKI TAKAYUKI , MINBU RYUICHI , YAMAGUCHI YOSHINORI , TAMAKI TOSHITARO , SHIMOKAWA TOSHIHIKO , IKEBUCHI YUTAKA , YOSHINAGA HIROSHI , SAITO KAZUYA , YUASA SHUTARO
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, and suppressing an increase in temperature at end parts without reducing productivity.SOLUTION: A fixing device includes a fixing rotating body, a heat source that heats the fixing rotating body, a non-rotatable nip forming member that is brought into contact with the fixing rotating body inside the fixing rotating body, a pressure rotating body that forms a nip with the nip forming member with the fixing rotating body therebetween, and a support member that receives a pressure applied to the nip forming member. The fixing device further includes a shield member that can be moved between an inner surface of the fixing rotating body and the heat source, and the shield member is constantly in contact with the support member.
摘要翻译：要解决的问题：提供具有能够实现节能并且缩短第一打印时间的简单配置的定影装置，并且在不降低生产率的情况下抑制端部温度的升高。解决方案：一种定影装置，包括固定旋转体，加热固定旋转体的热源，与固定旋转体内的固定旋转体接触的不可旋转的夹持形成部件，与固定旋转体的固定旋转体形成辊隙的压力旋转体旋转体，以及承受施加到辊隙形成构件的压力的支撑构件。定影装置还包括能够在固定旋转体的内表面和热源之间移动的屏蔽构件，并且屏蔽构件不断地与支撑构件接触。

2. 发明专利

JP2014085430A 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：JP2014085430A
公开(公告)日：2014-05-12
申请号：JP2012232701
申请日：2012-10-22
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： SAITO KAZUYA , SEKI TAKAYUKI , ARAI YUJI , YAMAGUCHI YOSHINORI , TAMAKI TOSHITARO , IKEBUCHI YUTAKA
IPC分类号： G03G15/20 , G03G21/00
摘要： PROBLEM TO BE SOLVED: To prevent a variation in voltage at the start of energization to fixing member heating means and flicker of a fluorescent light due to the variation, and minimize an influence to fixing temperature control.SOLUTION: A fixing device uses soft start control to gradually heat heating means at the start of energization to the heating means for heating a fixing member, and provides energization to the heating means so as to change a method of the soft start control according to a non-energization time from the completion of the previous energization to the start of the subsequent energization to the heating means and compensate the increment and decrement of effective power caused by the change in the control method.
摘要翻译：要解决的问题：为了防止由于变化而导致定影部件加热装置通电开始时的电压变化和荧光灯闪烁，并且对定影温度控制的影响最小化。解决方案：定影装置使用软启动控制在通电开始时将加热装置逐渐加热到用于加热定影构件的加热装置，并且向加热装置提供通电，以便根据从非完全的完成时的非通电时间改变软启动控制的方法先前通电到开始对加热装置的随后的通电，并补偿由控制方法的变化引起的有效功率的增减。

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

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。

5. 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。

6. 发明专利

JP2012145703A 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：JP2012145703A
公开(公告)日：2012-08-02
申请号：JP2011003205
申请日：2011-01-11
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： SHIMOKAWA TOSHIHIKO , YOSHIKAWA MASAAKI , ISHII KENJI , YOSHINAGA HIROSHI , ARAI YUJI , TAKAGI HIROTADA , IWATANI NAOKI , TOKUDA TETSUO , YAMAGUCHI YOSHINORI , IKEFUCHI YUTAKA , SESHIMO TAKUYA , FUJIMOTO IPPEI , YOSHIURA ARINOBU , IMADA TAKAHIRO , GOTO SO
IPC分类号： G03G15/20
摘要： PROBLEM TO BE SOLVED: To provide a fixing device and an image forming device capable of preventing delay of warm-up time for heating a fixing belt to a predetermined temperature and preventing the occurrence of a fixing failure due to the instability of the temperature of the fixing belt while maintaining the carrying properties of the fixing belt.SOLUTION: A pressure receiving member 22 for forming a fixing nip part N by receiving a pressure from a pressure roller 31 through a fixing belt 21 is disposed in an internal space surrounded by the inner peripheral surface of the fixing belt 21. The pressure receiving member 22 has a nip forming part 22a facing the fixing nip part N through the fixing belt 21 so as to form the fixing nip part N, a slide-contact part 22b in sliding contact with at least one position other than the fixing nip part N in the inner peripheral surface of the fixing belt 21 and a connection part for connecting the nip forming part 22a and the slide-contact part 22b so as to stretch the fixing belt 21.
摘要翻译：解决的问题：提供一种定影装置和图像形成装置，其能够防止将定影带加热到预定温度的预热时间的延迟，并且防止由于不稳定性导致的定影故障的发生同时保持定影带的承载性能。解决方案：用于通过从加压辊31通过定影带21接受压力来形成定影夹持部分N的压力接收部件22设置在由定影带21的内周表面包围的内部空间中。压力接收构件22具有通过定影带21面向定影夹持部N的辊隙形成部22a，以形成定影夹持部N，滑动接触部22b与除了定影夹持部之外的至少一个位置滑动接触定影带21的内周面中的部分N和用于连接夹持形成部分22a和滑动接触部分22b以便拉伸定影带21的连接部分。（C）2012年，JPO和INPIT

7. 发明专利

JP2012103608A 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：JP2012103608A
公开(公告)日：2012-05-31
申请号：JP2010253983
申请日：2010-11-12
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： YOSHIKAWA MASAAKI , ARAI YUJI , TAKAGI HIROTADA , YAMAGUCHI YOSHINORI , YOSHIURA ARINOBU , SHIMOKAWA TOSHIHIKO , TOKUDA TETSUO , IKEFUCHI YUTAKA , ISHII KENJI , IWATANI NAOKI , IMADA TAKAHIRO , YOSHINAGA HIROSHI , SESHIMO TAKUYA , GOTO SO , FUJIMOTO IPPEI
IPC分类号： G03G15/20
摘要： PROBLEM TO BE SOLVED: To provide a fixing device and an image forming apparatus able to prevent overheat of a support member, resulting from float of a fixing belt.SOLUTION: A fixing device 20 includes: a rotatable, flexible endless fixing belt 21; a nip forming member 26 for forming a nip part 27 sandwiching a recording medium P; and a tubular support member 60 rotatably supporting the fixing belt 21, and having a heating area 63 and a separating area 64. In the fixing device 20, the heating area 63 has an arcuate shape substantially equal in radius to that of the fixing belt 21, the center of the arc of the heating area 63 is situated upstream of the central line of the nip forming member 26 in the direction of recording medium conveyance. The separating area 64 has an arcuate shape and is situated downstream of the center of the arc of the heating area 63 in the direction of recording medium conveyance and is situated on the nip part 27 side. The maximum outside diameter between the heating area 63 and the separating area 64 corresponds to the maximum outside diameter of the support member 60, and is greater than the inside diameter of the fixing belt 21 together with.
摘要翻译：要解决的问题：提供一种能够防止由于定影带的浮起而导致的支撑构件过热的定影装置和图像形成装置。解决方案：定影装置20包括：可旋转的柔性环形定影带21; 夹持形成构件26，用于形成夹持记录介质P的夹持部27; 以及可旋转地支撑定影带21并具有加热区域63和分离区域64的管状支撑构件60.在定影装置20中，加热区域63具有与定影带21的半径大致相等的圆弧形状加热区域63的圆弧的中心位于压区形成构件26的中心线的上游沿记录介质输送方向。分离区域64具有弓形形状，并且位于加热区域63的圆弧的中心的下游，在记录介质输送方向上，并且位于辊隙部27侧。加热区域63和分离区域64之间的最大外径对应于支撑构件60的最大外径，并且大于定影带21的内径。版权所有（C）2012，JPO＆INPIT

8. 发明专利

JP2012103467A Fixation device and image formation 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：JP2012103467A
公开(公告)日：2012-05-31
申请号：JP2010251697
申请日：2010-11-10
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： IMADA TAKAHIRO , ISHII KENJI , IWATANI NAOKI , SESHIMO TAKUYA , YOSHINAGA HIROSHI , GOTO SO , TAKAGI HIROTADA , YAMAGUCHI YOSHINORI , SHIMOKAWA TOSHIHIKO , TOKUDA TETSUO , IKEFUCHI YUTAKA , ARAI YUJI , YOSHIURA ARINOBU , YOSHIKAWA MASAAKI , FUJIMOTO IPPEI
IPC分类号： G03G15/20 , F16C13/00
摘要： PROBLEM TO BE SOLVED: To provide a fixation device and an image formation device capable of inhibiting a slip phenomenon of a driven member when a sheet passes, so that excellent image quality can be obtained without increasing a component number.SOLUTION: A fixation device includes: a rotatable fixation member; a pressure roller 31 forming a nip part that presses the fixation member so as to cause unfixed toner on a passing recording medium to be fixed onto the recording medium; and a heater configured to heat the fixation member. The pressure roller 31 is a roller member including a cylindrical core bar 32 and an elastic layer 33 provided on an outer circumference of the core bar 32. An outer diameter RO1 of the core bar 32 at least at part of a non-sheet passing portion in an axial direction is larger than an outer diameter RO2 thereof at a sheet passing portion, and thickness t1 of the elastic layer 33 at least at part of the non-sheet passing portion in the axial direction is thinner than thickness t2 thereof at the sheet passing portion.
摘要翻译：要解决的问题：提供一种当片材通过时能够抑制从动构件的滑动现象的定影装置和图像形成装置，从而可以在不增加部件号的情况下获得优异的图像质量。解决方案：固定装置包括：可旋转固定构件; 形成夹持部的压力辊31，该夹持部按压固定构件，使得经过的记录介质上的未定影的调色剂固定在记录介质上; 以及构造成加热固定构件的加热器。加压辊31是包括圆柱形芯棒32和设置在芯棒32的外圆周上的弹性层33的辊构件。芯棒32的外径RO1至少部分为非片材通过部分在片材通过部分的轴向方向上的外径RO2大于非片材通过部分的至少一部分在轴向方向上的厚度t1比片材通过部分的厚度t2薄通过部分。版权所有（C）2012，JPO＆INPIT

9. 发明专利

JP2012103402A 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：JP2012103402A
公开(公告)日：2012-05-31
申请号：JP2010250725
申请日：2010-11-09
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： SHIMOKAWA TOSHIHIKO , YOSHIKAWA MASAAKI , ARAI YUJI , TOKUDA TETSUO , YAMAGUCHI YOSHINORI , IKEFUCHI YUTAKA , YOSHIURA ARINOBU , ISHII KENJI , IWATANI NAOKI , TAKAGI HIROTADA , SESHIMO TAKUYA , IMADA TAKAHIRO , GOTO SO , YOSHINAGA HIROSHI , FUJIMOTO IPPEI
IPC分类号： G03G15/20
摘要： PROBLEM TO BE SOLVED: To provide a fixing device and an image forming apparatus that prevent the occurrence of a belt slip to form high-quality images.SOLUTION: A fixing device comprises: a flexible, endless fixing belt 21 that runs in a predetermined direction to heat and melt a toner image; a pressuring roller 31 that comes into pressure contact with the fixing belt 21 to form a nip part; and a nip forming member 23 that is disposed at an inner peripheral side of the fixing belt 21 and comes into contact with the pressuring roller 31 via the fixing belt 21 to form a nip part. The nip forming member 23 includes a pressuring member contact part 24a an edge portion of which in a width direction other than a recording medium passage area is in substantially a similar shape to the pressuring roller 31.
摘要翻译：要解决的问题：提供一种防止皮带打滑发生形成高质量图像的定影装置和图像形成装置。解决方案：固定装置包括：柔性的，环形的定影带21，其沿预定方向延伸以加热和熔化调色剂图像; 与定影带21压力接触以形成压合部的加压辊31; 以及辊隙形成构件23，其设置在定影带21的内周侧，并且经由定影带21与加压辊31接触以形成辊隙部。辊隙形成构件23包括加压构件接触部分24a，其加压构件接触部分24a，其边缘部分在除了记录介质通道区域以外的宽度方向上与加压辊31基本相似。（C）2012年， JPO＆INPIT

10. 发明专利

JP2011197183A 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：JP2011197183A
公开(公告)日：2011-10-06
申请号：JP2010061897
申请日：2010-03-18
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： ISHII KENJI , YOSHIKAWA MASAAKI , YAMAGUCHI YOSHINORI , SHIMOKAWA TOSHIHIKO , IWATANI NAOKI , IMADA TAKAHIRO , IKEFUCHI YUTAKA , TOKUDA TETSUO , HASE TAKAMASA , SESHIMO TAKUYA , YOSHINAGA HIROSHI , FUJIMOTO IPPEI
IPC分类号： G03G15/20 , H05B3/00 , H05B3/12
CPC分类号： G03G15/2039 , G03G2215/2035 , G03G2215/2041
摘要： PROBLEM TO BE SOLVED: To provide a fixing device and image forming apparatus for stably butting a planar heating element on a fixing member at a low pressure and uniformly heating the fixing member while it is rotated at a low torque.SOLUTION: The fixing device includes a fixing sleeve 21, a pressure roller 31, an abutting member 26 that is arranged on the inner peripheral side of the fixing sleeve 21 and abuts on the pressure roller 31 via the fixing sleeve 21 to form a nip section, and a planar heating element 22 as an elastic sheet that is arranged on the inner peripheral side of the fixing sleeve 21, comes into contact with the fixing sleeve 21, and heats it. The main surface of the planar heating element 22 is in contact with the inner peripheral surface of the fixing sleeve 21 at a surface pressure applied by bending elastic force of the planar heating element 22.
摘要翻译：要解决的问题：提供一种用于在低压下将平面加热元件稳定地对准定影构件的定影装置和图像形成装置，并且在以低扭矩旋转时均匀地加热固定构件。解决方案：定影装置包括定影套筒21，加压辊31，配置在定影套筒21的内周侧的抵接部件26，经由定影套筒21抵接在加压辊31上，形成夹持部，平面加热元件如图22所示，作为布置在定影套筒21的内周侧上的弹性片，与定影套筒21接触并加热。平面加热元件22的主表面在由平面加热元件22的弯曲弹力施加的表面压力下与定影套筒21的内周面接触。

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