公开(公告)号：EP2453316A3

公开(公告)日：2017-07-12

申请号：EP11187509.2

申请日：2011-11-02

申请人： Ricoh Company, Ltd.

发明人： Yoshikawa, Masaaki ,  Iwaya, Naoki ,  Imada, Takahiro ,  Yoshinaga, Hiroshi ,  Seshita, Takuya ,  Gotoh, Hajime ,  Fujimoto, Ippei ,  Arai, Yuji ,  Takagi, Hiromasa ,  Yamaguchi, Yoshiki ,  Yoshiura, Arinobu ,  Shimokawa, Toshihiko ,  Tokuda, Tetsuo ,  Ikebuchi, Yutaka ,  Ishii, Kenji

IPC分类号： G03G15/20

CPC分类号： G03G15/2053 ,  G03G2215/2035

摘要： A fixing device includes a tubular belt holder, a rotatable, flexible fuser belt, a heater, a fuser pad, and a pressure member. The belt holder extends in an axial direction. The fuser belt is looped around the belt holder to rotate in a circumferential direction of the belt holder. The heater is disposed adjacent to the belt holder to heat the belt holder. The fuser pad is accommodated in the belt holder inside the loop of the fuser belt. The pressure member is disposed opposite the belt holder with the fuser belt interposed between the fuser pad and the pressure member. The pressure member presses in a load direction against the fuser pad through the fuser belt to form a fixing nip therebetween. The belt holder includes, along a circumferential dimension thereof, an upstream, first circumferential portion, a downstream, second circumferential portion, and a midstream, third circumferential portion.

摘要翻译： 定影装置包括管状带保持器，可旋转的柔性定影器带，加热器，定影器垫和压力构件。 皮带架沿轴向延伸。 定影带围绕带架缠绕以沿带架的圆周方向旋转。 加热器设置在带座附近以加热带座。 定影器垫被容纳在定影带环内的带座中。 压力构件与带支架相对设置，定影带介于定影垫和压力构件之间。 加压构件通过定影带沿加载方向压靠定影垫，以在其间形成定影辊隙。 带支架沿其圆周尺寸包括上游，第一圆周部分，下游，第二圆周部分和中游，第三圆周部分。

公开(公告)号：EP2466392A3

公开(公告)日：2017-01-11

申请号：EP11193525.0

申请日：2011-12-14

申请人： Ricoh Company, Ltd.

发明人： Yoshikawa, Masaaki ,  Imada, Takahiro ,  Iwaya, Naoki ,  Arai, Yuji ,  Yoshiura, Arinobu ,  Takagi, Hiromasa ,  Fujimoto, Ippei ,  Tokuda, Tetsuo ,  Ikebuchi, Yutaka ,  Seshita, Takuya ,  Yoshinaga, Hiroshi ,  Gotoh, Hajime ,  Yamaguchi, Yoshiki ,  Shimokawa, Toshihiko ,  Ishii, Kenji

IPC分类号： G03G15/20

摘要： A fixing device, including a fixing member; a pressure member; a nip forming member; a reinforcing member; a heating member; and a flange member including a cylinder inserted in an inner circumference at an edge of the fixing member in an axial direction thereof and a flange fixed on a frame of the fixing device, wherein the cylinder of the flange member includes a notch storing the nip forming member at a part on the circumference, has an arc-shaped outer circumferential cross-section at an area corresponding to an area where the fixing member is heated by the heating member, having a predetermined radius equivalent to a radius of the fixing member, and the arc has a center located at an upstream side in a recording medium feeding direction relative to a center line of the nip forming member in the recording medium feeding direction.

公开(公告)号：EP2804053A1

公开(公告)日：2014-11-19

申请号：EP14167456.4

申请日：2014-05-08

申请人： Ricoh Company, Ltd.

发明人： Yoshikawa, Masaaki ,  Seki, Takayuki ,  Arai, Yuji ,  Yoshinaga, Hiroshi ,  Mimbu, Ryuuichi ,  Seshita, Takuya ,  Tamaki, Shuntaro ,  Yamamoto, Takeshi ,  Imada, Takahiro ,  Gotoh, Hajime ,  Saito, Kazuya ,  Ikebuchi, Yutaka ,  Shimokawa, Toshihiko ,  Yuasa, Shuutaroh ,  Yamaji, Kensuke ,  Suzuki, Akira

IPC分类号： G03G15/20

CPC分类号： G03G15/2053 ,  G03G2215/2035

摘要： A fixing device (20) includes a fixing rotator (21) and a nip formation assembly (24) contacting the fixing rotator (21). An opposed rotator (22) presses against the nip formation assembly (24) via the fixing rotator (21) to form a fixing nip (N) between the fixing rotator (21) and the opposed rotator (22). A support (25), disposed opposite an inner circumferential surface of the fixing rotator (21), supports the nip formation assembly (24). A heater (23), disposed opposite the inner circumferential surface of the fixing rotator (21), heats the fixing rotator (21). A reflector (27), disposed opposite an outer circumferential surface of the fixing rotator (21), reflects heat radiated from the fixing rotator (21) onto the fixing rotator (21). The reflector (27) spans a circumferential span of the fixing rotator (21) where the fixing rotator (21) is spaced apart from the support (25) with a decreased interval therebetween.

摘要翻译： 定影装置（20）包括定影旋转体（21）和与定影旋转体（21）接触的辊隙形成组件（24）。 相对转动体22通过定影旋转体21压靠在压区形成组件24上以在定影旋转体21和相对旋转体22之间形成定影压区N. 与定影旋转体（21）的内周面相对配置的支撑体（25）支撑辊隙形成组装体（24）。 与定影旋转体（21）的内周面相对配置的加热器（23）加热定影旋转体（21）。 与定影旋转体21的外圆周表面相对设置的反射体27将从定影旋转体21辐射的热量反射到定影旋转体21上。 反射器（27）跨越定影旋转体（21）的周向跨度，其中定影旋转体（21）与支撑体（25）间隔开减小间隔。

公开(公告)号：EP2615501A3

公开(公告)日：2013-12-11

申请号：EP12197771.4

申请日：2012-12-18

申请人： Ricoh Company, Ltd.

发明人： Kawata, Teppei ,  Satoh, Masahiko ,  Ishii, Kenji ,  Yoshikawa, Masaaki ,  Yoshinaga, Hiroshi ,  Uchitani, Takeshi ,  Ogawa, Tadashi ,  Takagi, Hiromasa ,  Iwaya, Naoki ,  Seshita, Takuya ,  Imada, Takahiro ,  Gotoh, Hajime ,  Hase, Takamasa ,  Saito, Kazuya ,  Shimokawa, Toshihiko ,  Yuasa, Shuutaroh ,  Yoshiura, Arinobu ,  Yamaji, Kensuke ,  Suzuki, Akira

IPC分类号： G03G15/20

CPC分类号： G03G15/2053 ,  G03G15/2017

摘要： A fixing device (20) for fixing an image on a recording medium (P) includes an endless fixing rotary member (21) which is formed into a loop and comes into contact with the image on the recording medium, an opposed rotary member (22) which is in contact with the fixing rotary member, a nip forming member (24) provided inside the loop of the fixing rotary member to be in contact with the opposed rotary member via the fixing rotary member to form a nip portion to which the recording medium is fed in a feeding direction, a support member (25) which supports the nip forming member, and a heating source (23) which heats the fixing rotary member. The nip forming member includes a downstream portion extending downstream in the feeding direction from a center of the nip portion and an upstream portion extending upstream in the feeding direction from the center and longer than the downstream portion.

公开(公告)号：EP2610686A1

公开(公告)日：2013-07-03

申请号：EP12193744.5

申请日：2012-11-22

申请人： Ricoh Company, Ltd.

发明人： Gotoh, Hajime ,  Satoh, Masahiko ,  Yoshikawa, Masaaki ,  Ishii, Kenji ,  Ogawa, Tadashi ,  Imada, Takahiro ,  Takagi, Hiromasa ,  Saito, Kazuya ,  Iwaya, Naoki ,  Shimokawa, Toshihiko ,  Yamaji, Kensuke ,  Kawata, Teppei ,  Hase, Takamasa ,  Yuasa, Shuutaroh ,  Seshita, Takuya ,  Uchitani, Takeshi ,  Yoshiura, Arinobu ,  Suzuki, Akira ,  Yoshinaga, Hiroshi

IPC分类号： G03G15/20

CPC分类号： G03G15/2064 ,  G03G15/2053 ,  G03G2215/2035

摘要： The fixing device (20) includes a nip formation assembly (24) that includes a base pad (241) defining a fixing nip (N) formed between an endless belt (21) and an opposed rotary body (22). The base pad (241) includes a pressure portion (50), an extension portion (51), and a curved portion (52). The pressure portion (50) presses against the opposed rotary body (22) via the endless belt (21). The extension portion (51) is contiguous to and disposed upstream from the pressure portion (50) in a recording medium conveyance direction. The extension portion (51) does not press against the opposed rotary body (22) via the endless belt (21). The curved portion (52) is disposed upstream from the extension portion (51) in the recording medium conveyance direction and smoothly blends into the extension portion (51). The curved portion (52) does not press against the opposed rotary body (22).

摘要翻译： 定影装置（20）包括一个压区形成组件（24），该压区形成组件包括形成在环形带（21）和相对旋转体（22）之间形成的定影辊隙（N）的基座（241）。 基座（241）包括压力部分（50），延伸部分（51）和弯曲部分（52）。 压力部分（50）通过环形带（21）压靠在相对的旋转体（22）上。 延伸部分51在记录介质输送方向上与压力部分50相邻并设置在上游。 延伸部（51）不经由环形带（21）压靠在相对的旋转体（22）上。 弯曲部分（52）在记录介质传送方向上设置在延伸部分（51）的上游，并且平滑地融合到延伸部分（51）中。 弯曲部分（52）不压靠在相对的旋转体（22）上。

公开(公告)号：EP2453316A2

公开(公告)日：2012-05-16

申请号：EP11187509.2

申请日：2011-11-02

申请人： Ricoh Company, Ltd.

发明人： Yoshikawa, Masaaki ,  Iwaya, Naoki ,  Imada, Takahiro ,  Yoshinaga, Hiroshi ,  Seshita, Takuya ,  Gotoh, Hajime ,  Fujimoto, Ippei ,  Arai, Yuji ,  Takagi, Hiromasa ,  Yamaguchi, Yoshiki ,  Yoshiura, Arinobu ,  Shimokawa, Toshihiko ,  Tokuda, Tetsuo ,  Ikebuchi, Yutaka ,  Ishii, Kenji

IPC分类号： G03G15/20

CPC分类号： G03G15/2053 ,  G03G2215/2035

摘要： A fixing device includes a tubular belt holder, a rotatable, flexible fuser belt, a heater, a fuser pad, and a pressure member. The belt holder extends in an axial direction. The fuser belt is looped around the belt holder to rotate in a circumferential direction of the belt holder. The heater is disposed adjacent to the belt holder to heat the belt holder. The fuser pad is accommodated in the belt holder inside the loop of the fuser belt. The pressure member is disposed opposite the belt holder with the fuser belt interposed between the fuser pad and the pressure member. The pressure member presses in a load direction against the fuser pad through the fuser belt to form a fixing nip therebetween. The belt holder includes, along a circumferential dimension thereof, an upstream, first circumferential portion, a downstream, second circumferential portion, and a midstream, third circumferential portion.

摘要翻译： 定影装置包括管状带保持器，可旋转的柔性定影带，加热器，定影垫和压力构件。 皮带保持架沿轴向方向延伸。 定影带围绕带保持器环绕在带保持器的圆周方向上旋转。 加热器邻近带保持器设置以加热带保持器。 定影垫容纳在定影带环内的皮带保持架内。 压力构件与带保持器相对设置，定影带插入在定影垫和压力构件之间。 压力构件通过定影带在负载方向上压靠定影垫，以在它们之间形成定影辊隙。 带保持器沿其周向尺寸包括上游，第一周向部分，下游，第二周向部分和中游第三圆周部分。

公开(公告)号：EP2453318B1

公开(公告)日：2020-02-19

申请号：EP11188655.2

申请日：2011-11-10

申请人： Ricoh Company, Ltd.

发明人： Tokuda, Tetsuo ,  Fujimoto, Ippei ,  Yamaguchi, Yoshiki ,  Yoshiura, Arinobu ,  Imada, Takahiro ,  Gotoh, Hajime ,  Shimokawa, Toshihiko ,  Yoshikawa, Masaaki ,  Ishii, Kenji ,  Yoshinaga, Hiroshi ,  Arai, Yuji ,  Takagi, Hiromasa ,  Iwaya, Naoki ,  Ikebuchi, Yutaka ,  Seshita, Takuya

IPC分类号： G03G15/20

公开(公告)号：EP2778796A3

公开(公告)日：2017-01-04

申请号：EP14157498.8

申请日：2014-03-03

申请人： Ricoh Company, Ltd.

发明人： Suzuki, Akira ,  Seshita, Takuya ,  Imada, Takahiro ,  Gotoh, Hajime ,  Yamaji, Kensuke

IPC分类号： G03G15/20

CPC分类号： G03G15/2085 ,  G03G15/2025 ,  G03G15/2028 ,  G03G15/2035

摘要： A fixing device (80) includes an endless, rotary fixing member (81); a heat source to heat the fixing member (81); an opposed member (82) disposed opposite the fixing member (81) and to form a fixing nip (84) with the fixing member (81); and a biasing member (83) disposed opposite the opposed member (82), to press the fixing member (81) from a back side of the fixing member (81) against the opposed member (82) at the fixing nip (84); grip portions (G1, G2) at which the fixing member (81) and the opposed member (82) contact each other in areas through which the recording medium (S) does not pass, among the fixing nip (84) along a direction perpendicular to a conveyance direction of the recording medium (S); and a cleaning member (86, 87) to clean one of the grip portions (G1, G2) of the fixing member (81) and the opposed member (82).

摘要翻译： 固定装置（80）包括环形旋转固定构件（81）; 用于加热所述固定构件（81）的热源; 相对的构件（82），与所述固定构件（81）相对设置并且与所述固定构件（81）形成定影压区（84）; 以及与所述相对构件相对设置的偏置构件，在所述定影辊隙（84）处将所述固定构件（81）从所述固定构件（81）的背面压靠在所述相对构件（82）上; 固定部件（81）和相对部件（82）之间的夹持部分（G1，G2）在定影辊隙（84）中沿着垂直于方向的方向彼此接触在记录介质（S）不通过的区域中 到记录介质（S）的输送方向; 和清洁构件（86,87），以清洁固定构件（81）和相对构件（82）的夹持部分（G1，G2）之一。

公开(公告)号：EP2778796A2

公开(公告)日：2014-09-17

申请号：EP14157498.8

申请日：2014-03-03

申请人： Ricoh Company, Ltd.

发明人： Suzuki, Akira ,  Seshita, Takuya ,  Imada, Takahiro ,  Gotoh, Hajime ,  Yamaji, Kensuke

IPC分类号： G03G15/20

CPC分类号： G03G15/2085 ,  G03G15/2025 ,  G03G15/2028 ,  G03G15/2035

摘要： A fixing device (80) includes an endless, rotary fixing member (81); a heat source to heat the fixing member (81); an opposed member (82) disposed opposite the fixing member (81) and to form a fixing nip (84) with the fixing member (81); and a biasing member (83) disposed opposite the opposed member (82), to press the fixing member (81) from a back side of the fixing member (81) against the opposed member (82) at the fixing nip (84); grip portions (G1, G2) at which the fixing member (81) and the opposed member (82) contact each other in areas through which the recording medium (S) does not pass, among the fixing nip (84) along a direction perpendicular to a conveyance direction of the recording medium (S); and a cleaning member (86, 87) to clean one of the grip portions (G1, G2) of the fixing member (81) and the opposed member (82).

摘要翻译： 定影装置（80）包括环形旋转固定构件（81）; 加热固定构件（81）的热源; 与所述固定部件相对配置并与所述固定部件形成固定夹持部的对置部件。 （82）相对设置的偏置部件（83），用于在定影夹持部（84）处将定影部件（81）从定影部件（81）的后侧压靠在相对部件（82）上; 在所述定影夹持部（84）中沿着垂直于所述记录介质（S）的方向的垂直方向上，所述定影部件（81）和所述相对部件（82）在所述记录介质（S）不通过的区域中彼此接触的夹持部（G1，G2） 到记录介质（S）的传送方向; 以及用于清洁固定构件（81）和相对构件（82）的一个把持部（G1，G2）的清洁构件（86,87）。

公开(公告)号：EP2610688A1

公开(公告)日：2013-07-03

申请号：EP12198941.2

申请日：2012-12-21

申请人： Ricoh Company, Ltd.

发明人： Yoshinaga, Hiroshi ,  Satoh, Masahiko ,  Yoshikawa, Masaaki ,  Ishii, Kenji ,  Ogawa, Tadashi ,  Imada, Takahiro ,  Takagi, Hiromasa ,  Saito, Kazuya ,  Iwaya, Naoki ,  Shimokawa, Toshihiko ,  Yamaji, Kensuke ,  Kawata, Teppei ,  Hase, Takamasa ,  Yuasa, Shuutaroh ,  Seshita, Takuya ,  Uchitani, Takeshi ,  Yoshiura, Arinobu ,  Gotoh, Hajime ,  Suzuki, Akira

IPC分类号： G03G15/20

CPC分类号： G03G15/2067 ,  G03G15/2032 ,  G03G15/2053

摘要： A fixing device (20) includes a support (25) that includes a base (25a) contacting a nip formation assembly (24). An upstream projection (25b1) projects from the base (25a) in a pressurization direction of an opposed rotary body (22) at a position on the base (25a) corresponding to or upstream from an upstream edge (N1) of a fixing nip (N) formed between the opposed rotary body (22) and an endless belt (21) in a recording medium conveyance direction. A downstream projection (25b2) projects from the base (25a) in the pressurization direction of the opposed rotary body (22) at a position on the base (25a) corresponding to or downstream from a downstream edge (N2) of the fixing nip (N) in the recording medium conveyance direction. The downstream projection (25b2) is spaced apart from the upstream projection (25b1) in the recording medium conveyance direction.

摘要翻译： 定影装置（20）包括支撑件（25），其包括接触压区形成组件（24）的基部（25a）。 上游突起（25b1）在相对的旋转体（22）的加压方向上从基板（25a）的与定影辊隙的上游边缘（N1）对应或上游的位置突出， N）形成在相对的旋转体（22）和环形带（21）之间。 下游突起（25b2）在相对的旋转体（22）的加压方向上从与定影辊隙的下游边缘（N2）对应或下游的基部（25a）上的位置从基部（25a）突出， N）。 下游突起（25b2）在记录介质传送方向上与上游突起（25b1）间隔开。