公开(公告)号：US20150268597A1

公开(公告)日：2015-09-24

申请号：US14704389

申请日：2015-05-05

申请人： Yuji ARAI ,  Takayuki SEKI ,  Yoshiki YAMAGUCHI ,  Shuntaroh TAMAKI ,  Yutaka IKEBUCHI ,  Kazuya SAITO ,  Kenji ISHII ,  Tadashi OGAWA ,  Teppei KAWATA ,  Arinobu YOSHIURA ,  Toshihiko SHIMOKAWA ,  Kensuke YAMAJI ,  Masaaki YOSHIKAWA ,  Hiromasa TAKAGI ,  Naoki IWAYA ,  Takahiro IMADA ,  Hajime GOTOH ,  Akira SUZUKI ,  Hiroshi YOSHINAGA ,  Ryuuichi MIMBU ,  Takuya SESHITA ,  Takeshi YAMAMOTO ,  Shuutaroh YUASA

发明人： Yuji ARAI ,  Takayuki SEKI ,  Yoshiki YAMAGUCHI ,  Shuntaroh TAMAKI ,  Yutaka IKEBUCHI ,  Kazuya SAITO ,  Kenji ISHII ,  Tadashi OGAWA ,  Teppei KAWATA ,  Arinobu YOSHIURA ,  Toshihiko SHIMOKAWA ,  Kensuke YAMAJI ,  Masaaki YOSHIKAWA ,  Hiromasa TAKAGI ,  Naoki IWAYA ,  Takahiro IMADA ,  Hajime GOTOH ,  Akira SUZUKI ,  Hiroshi YOSHINAGA ,  Ryuuichi MIMBU ,  Takuya SESHITA ,  Takeshi YAMAMOTO ,  Shuutaroh YUASA

IPC分类号： G03G15/20

CPC分类号： G03G15/2017 ,  G03G15/20 ,  G03G15/2042 ,  G03G15/2053

摘要： A fixing device includes a fixing rotary body and a heater disposed opposite the fixing rotary body. A heat shield is movable in a circumferential direction of the fixing rotary body and interposed between the heater and the fixing rotary body to shield the fixing rotary body from the heater. An overheating suppressor is interposed between the heater and the heat shield to shield the heat shield from the heater. The heat shield includes an intermediate portion spanning in the circumferential direction of the fixing rotary body and movable between a shield position where the intermediate portion is disposed opposite the heater directly and a retracted position where the intermediate portion is disposed opposite the heater via the overheating suppressor.

摘要翻译： 定影装置包括固定旋转体和与定影旋转体相对设置的加热器。 隔热罩可以在固定旋转体的圆周方向上移动并插入在加热器和定影旋转体之间，以将定影旋转体屏蔽到加热器上。 过热抑制器插在加热器和隔热罩之间，以将隔热罩屏蔽到加热器上。 隔热罩包括跨过定影旋转体的圆周方向的中间部分，并且可在直接与加热器相对设置的中间部分的屏蔽位置之间移动，以及中间部分经由过热抑制器与加热器相对设置的缩回位置 。

公开(公告)号：US20130188991A1

公开(公告)日：2013-07-25

申请号：US13710899

申请日：2012-12-11

申请人： Teppei KAWATA ,  Kenji ISHII ,  Tadashi OGAWA ,  Arinobu YOSHIURA ,  Toshihiko SHIMOKAWA ,  Kensuke YAMAJI ,  Yuji ARAI ,  Yoshiki YAMAGUCHI ,  Hiromasa TAKAGI ,  Naoki IWAYA ,  Takahiro IMADA ,  Hajime GOTOH ,  Akira SUZUKI ,  Masaaki YOSHIKAWA ,  Takayuki SEKI ,  Shuntaroh TAMAKI ,  Kazuya SAITO ,  Yutaka IKEBUCHI

发明人： Teppei KAWATA ,  Kenji ISHII ,  Tadashi OGAWA ,  Arinobu YOSHIURA ,  Toshihiko SHIMOKAWA ,  Kensuke YAMAJI ,  Yuji ARAI ,  Yoshiki YAMAGUCHI ,  Hiromasa TAKAGI ,  Naoki IWAYA ,  Takahiro IMADA ,  Hajime GOTOH ,  Akira SUZUKI ,  Masaaki YOSHIKAWA ,  Takayuki SEKI ,  Shuntaroh TAMAKI ,  Kazuya SAITO ,  Yutaka IKEBUCHI

IPC分类号： G03G15/20

CPC分类号： G03G15/2085 ,  G03G15/2028 ,  G03G15/205 ,  G03G15/2053 ,  G03G2215/2035

摘要： A fixing device comprises a rotatable fixing member to heat a side of a recording medium bearing an unfixed image; a heat source to heat the rotatable fixing member; a rotatable pressing member disposed opposite the fixing member to press against an outer side of the fixing member; a housing to accommodate the fixing member and the pressing member; a conveyance path defined internally within the fixing device to convey a recording medium therethrough and between the fixing member and the pressing member, and a shutter actuator to move the shutter to open and close the conveyance path. The housing holds the shutter and the shutter actuator.

摘要翻译： 定影装置包括可旋转的固定构件，用于加热承载未固定图像的记录介质的一侧; 用于加热可旋转固定构件的热源; 与所述固定构件相对设置的可旋转的压紧构件，以压靠所述固定构件的外侧; 容纳所述固定构件和所述按压构件的壳体; 传送路径，其定义在固定装置的内部，以通过其传送记录介质，并且在固定构件和按压构件之间;以及快门致动器，用于移动快门以打开和关闭输送路径。 外壳保持快门和快门执行器。

公开(公告)号：US20140079453A1

公开(公告)日：2014-03-20

申请号：US14014653

申请日：2013-08-30

申请人： Yuji ARAI ,  Takayuki Seki ,  Yoshiki Yamaguchi ,  Shuntaroh Tamaki ,  Yutaka Ikebuchi ,  Kazuya Saito ,  Kenji Ishii ,  Tadashi Ogawa ,  Teppei Kawata ,  Arinobu Yoshiura ,  Toshihiko Shimokawa ,  Kensuke Yamaji ,  Masaaki Yoshikawa ,  Hiromasa Takagi ,  Naoki Iwaya ,  Takahiro Imada ,  Hajime Gotoh ,  Akira Suzuki ,  Hiroshi Yoshinaga ,  Ryuuichi Mimbu ,  Takuya Seshita ,  Takeshi Yamamoto ,  Shuutaroh Yuasa

发明人： Yuji ARAI ,  Takayuki Seki ,  Yoshiki Yamaguchi ,  Shuntaroh Tamaki ,  Yutaka Ikebuchi ,  Kazuya Saito ,  Kenji Ishii ,  Tadashi Ogawa ,  Teppei Kawata ,  Arinobu Yoshiura ,  Toshihiko Shimokawa ,  Kensuke Yamaji ,  Masaaki Yoshikawa ,  Hiromasa Takagi ,  Naoki Iwaya ,  Takahiro Imada ,  Hajime Gotoh ,  Akira Suzuki ,  Hiroshi Yoshinaga ,  Ryuuichi Mimbu ,  Takuya Seshita ,  Takeshi Yamamoto ,  Shuutaroh Yuasa

IPC分类号： G03G15/20

CPC分类号： G03G15/2017 ,  G03G15/20 ,  G03G15/2042 ,  G03G15/2053

摘要： A fixing device includes a fixing rotary body and a heater disposed opposite the fixing rotary body. A heat shield is movable in a circumferential direction of the fixing rotary body and interposed between the heater and the fixing rotary body to shield the fixing rotary body from the heater. An overheating suppressor is interposed between the heater and the heat shield to shield the heat shield from the heater. The heat shield includes an intermediate portion spanning in the circumferential direction of the fixing rotary body and movable between a shield position where the intermediate portion is disposed opposite the heater directly and a retracted position where the intermediate portion is disposed opposite the heater via the overheating suppressor.

摘要翻译： 定影装置包括固定旋转体和与定影旋转体相对设置的加热器。 隔热罩可以在固定旋转体的圆周方向上移动并插入在加热器和定影旋转体之间，以将定影旋转体屏蔽到加热器上。 过热抑制器插在加热器和隔热罩之间，以将隔热罩屏蔽到加热器上。 隔热罩包括跨过定影旋转体的圆周方向的中间部分，并且可在直接与加热器相对设置的中间部分的屏蔽位置之间移动，以及中间部分经由过热抑制器与加热器相对设置的缩回位置 。

公开(公告)号：US20160098003A1

公开(公告)日：2016-04-07

申请号：US14966911

申请日：2015-12-11

申请人： Takeshi UCHITANI ,  Masahiko SATOH ,  Kenji ISHII ,  Tadashi OGAWA ,  Teppei KAWATA ,  Arinobu YOSHIURA ,  Toshihiko SHIMOKAWA ,  Kensuke YAMAJI ,  Takamasa HASE ,  Shuutaroh YUASA ,  Masaaki YOSHIKAWA ,  Hiromasa TAKAGI ,  Takahiro IMADA ,  Hajime GOTOH ,  Akira SUZUKI ,  Takuya SESHITA ,  Hiroshi YOSHINAGA ,  Kazuya SAITO ,  Shinichi NAMEKATA ,  Takayuki SEKI ,  Yuji ARAI ,  Ryuuichi MIMBU ,  Yoshiki YAMAGUCHI ,  Shuntaroh TAMAKI ,  Yutaka IKEBUCHI

发明人： Takeshi UCHITANI ,  Masahiko SATOH ,  Kenji ISHII ,  Tadashi OGAWA ,  Teppei KAWATA ,  Arinobu YOSHIURA ,  Toshihiko SHIMOKAWA ,  Kensuke YAMAJI ,  Takamasa HASE ,  Shuutaroh YUASA ,  Masaaki YOSHIKAWA ,  Hiromasa TAKAGI ,  Takahiro IMADA ,  Hajime GOTOH ,  Akira SUZUKI ,  Takuya SESHITA ,  Hiroshi YOSHINAGA ,  Kazuya SAITO ,  Shinichi NAMEKATA ,  Takayuki SEKI ,  Yuji ARAI ,  Ryuuichi MIMBU ,  Yoshiki YAMAGUCHI ,  Shuntaroh TAMAKI ,  Yutaka IKEBUCHI

IPC分类号： G03G15/20

CPC分类号： G03G15/2064 ,  G03G15/2039 ,  G03G15/205 ,  G03G2215/2035

摘要： A fixing device includes a heat source; a fixing member looped into a generally cylindrical shape to rotate in a circumferential direction thereof and partially heated by the heat source and to heat a surface of a recording medium bearing an unfixed toner image to fix the unfixed toner image thereon in a fixing process; a rotary pressing member disposed facing the fixing member to form a nip therebetween, through which the recording medium is transported in a transport direction; and a rotation driver to rotate one of the fixing member and the pressing member. In a case in which the fixing member is halted for a reason other than the fixing process while power of the fixing device is on, electric power is not supplied to the heat source and the fixing member is rotated by a predetermined amount or more after the fixing member is halted.

公开(公告)号：US20170277091A1

公开(公告)日：2017-09-28

申请号：US15618819

申请日：2017-06-09

申请人： Takeshi UCHITANI ,  Masahiko SATOH ,  Kenji ISHII ,  Tadashi OGAWA ,  Teppei KAWATA ,  Arinobu YOSHIURA ,  Toshihiko SHIMOKAWA ,  Kensuke YAMAJI ,  Takamasa HASE ,  Shuutaroh YUASA ,  Masaaki YOSHIKAWA ,  Hiromasa TAKAGI ,  Takahiro IMADA ,  Hajime GOTOH ,  Akira SUZUKI ,  Takuya SESHITA ,  Hiroshi YOSHINAGA ,  Kazuya SAITO ,  Shinichi NAMEKATA ,  Takayuki SEKI ,  Yuji ARAI ,  Ryuuichi MIMBU ,  Yoshiki YAMAGUCHI ,  Shuntaroh TAMAKI ,  Yutaka IKEBUCHI

发明人： Takeshi UCHITANI ,  Masahiko SATOH ,  Kenji ISHII ,  Tadashi OGAWA ,  Teppei KAWATA ,  Arinobu YOSHIURA ,  Toshihiko SHIMOKAWA ,  Kensuke YAMAJI ,  Takamasa HASE ,  Shuutaroh YUASA ,  Masaaki YOSHIKAWA ,  Hiromasa TAKAGI ,  Takahiro IMADA ,  Hajime GOTOH ,  Akira SUZUKI ,  Takuya SESHITA ,  Hiroshi YOSHINAGA ,  Kazuya SAITO ,  Shinichi NAMEKATA ,  Takayuki SEKI ,  Yuji ARAI ,  Ryuuichi MIMBU ,  Yoshiki YAMAGUCHI ,  Shuntaroh TAMAKI ,  Yutaka IKEBUCHI

IPC分类号： G03G15/20

CPC分类号： G03G15/2064 ,  G03G15/2039 ,  G03G15/205 ,  G03G2215/2035

摘要： A fixing device includes a heat source; a fixing member looped into a generally cylindrical shape to rotate in a circumferential direction thereof and partially heated by the heat source and to heat a surface of a recording medium bearing an unfixed toner image to fix the unfixed toner image thereon in a fixing process; a rotary pressing member disposed facing the fixing member to form a nip therebetween, through which the recording medium is transported in a transport direction; and a rotation driver to rotate one of the fixing member and the pressing member. In a case in which the fixing member is halted for a reason other than the fixing process while power of the fixing device is on, electric power is not supplied to the heat source and the fixing member is rotated by a predetermined amount or more after the fixing member is halted.

公开(公告)号：US20140016971A1

公开(公告)日：2014-01-16

申请号：US13929920

申请日：2013-06-28

申请人： Yuji ARAI ,  Masaaki YOSHIKAWA ,  Kenji ISHII ,  Tadashi OGAWA ,  Teppei KAWATA ,  Arinobu YOSHIURA ,  Toshihiko SHIMOKAWA ,  Kensuke YAMAJI ,  Yoshiki YAMAGUCHI ,  Hiromasa TAKAGI ,  Naoki IWAYA ,  Takahiro IMADA ,  Hajime GOTOH ,  Akira SUZUKI

发明人： Yuji ARAI ,  Masaaki YOSHIKAWA ,  Kenji ISHII ,  Tadashi OGAWA ,  Teppei KAWATA ,  Arinobu YOSHIURA ,  Toshihiko SHIMOKAWA ,  Kensuke YAMAJI ,  Yoshiki YAMAGUCHI ,  Hiromasa TAKAGI ,  Naoki IWAYA ,  Takahiro IMADA ,  Hajime GOTOH ,  Akira SUZUKI

IPC分类号： G03G15/20

CPC分类号： G03G15/2053 ,  G03G15/206 ,  G03G15/2064 ,  G03G2215/2016 ,  G03G2215/2032 ,  G03G2215/2035

摘要： A fixing device includes a fixing rotary body rotatable in a given direction of rotation and a pressing rotary body pressed against the fixing rotary body to form a fixing nip therebetween through which a recording medium bearing a toner image is conveyed. A heater is disposed inside the fixing rotary body to heat the fixing rotary body. A reflector, disposed opposite an inner circumferential surface of the fixing rotary body via the heater, reflects light emitted from the heater onto the fixing rotary body. The reflector includes a movable portion movable relative to the heater to direct the light emitted from the heater onto a variable heating span of the fixing rotary body spanning in an axial direction thereof. The variable heating span varies depending on a width of the recording medium in the axial direction of the fixing rotary body.

摘要翻译： 定影装置包括可沿给定旋转方向旋转的定影旋转体和压靠在定影旋转体上的按压旋转体，以在其间传送承载调色剂图像的记录介质的定影夹持物。 定影旋转体内设有加热器，以加热定影旋转体。 经由加热器与定影旋转体的内周面相对设置的反射器将从加热器发射的光反射到定影旋转体上。 反射器包括可相对于加热器移动的可移动部分，以将从加热器发射的光引导到固定旋转体的沿其轴向方向的可变加热跨度。 可变加热跨度根据记录介质在固定旋转体的轴向上的宽度而变化。

公开(公告)号：US20130236225A1

公开(公告)日：2013-09-12

申请号：US13771467

申请日：2013-02-20

申请人： Tadashi OGAWA ,  Masaaki YOSHIKAWA ,  Kenji ISHII ,  Teppei KAWATA ,  Arinobu YOSHIURA ,  Toshihiko SHIMOKAWA ,  Kensuke YAMAJI ,  Yuji ARAI ,  Yoshiki YAMAGUCHI ,  Hiromasa TAKAGI ,  Naoki IWAYA ,  Takahiro IMADA ,  Hajime GOTOH ,  Akira SUZUKI

发明人： Tadashi OGAWA ,  Masaaki YOSHIKAWA ,  Kenji ISHII ,  Teppei KAWATA ,  Arinobu YOSHIURA ,  Toshihiko SHIMOKAWA ,  Kensuke YAMAJI ,  Yuji ARAI ,  Yoshiki YAMAGUCHI ,  Hiromasa TAKAGI ,  Naoki IWAYA ,  Takahiro IMADA ,  Hajime GOTOH ,  Akira SUZUKI

IPC分类号： G03G15/20

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

摘要： A fixing device includes an endless belt and a pressing body pressed against the endless belt to form a fixing nip therebetween through which a recording medium is conveyed. A separator contacts and separates the recording medium discharged from the fixing nip from the endless belt. The separator includes a center plate disposed opposite a center of the endless belt in an axial direction thereof to contact the recording medium and a lateral end plate disposed opposite each lateral end of the endless belt in the axial direction thereof and including a contact portion projecting beyond the center plate toward the endless belt and contacting the endless belt to produce a given interval between the center plate and the endless belt.

摘要翻译： 固定装置包括环形带和压靠在环形带上的压制构件，以在其间传送记录介质。 分离器将从定影辊隙排出的记录介质与环形带接触并分离。 分离器包括中心板，该中心板沿环形带的轴向方向相对于其轴向方向设置以接触记录介质;以及横向端板，其设置在环形带的轴向方向上与环形带的每个侧端相对，并且包括突出超过的接触部分 中心板朝向环形带并且接触环形带以在中心板和环形带之间产生给定的间隔。

公开(公告)号：US20130209139A1

公开(公告)日：2013-08-15

申请号：US13752679

申请日：2013-01-29

申请人： Tadashi OGAWA ,  Kenji ISHII ,  Teppei KAWATA ,  Arinobu YOSHIURA ,  Toshihiko SHIMOKAWA ,  Kensuke YAMAJI ,  Yuji ARAI ,  Yoshiki YAMAGUCHI ,  Hiromasa TAKAGI ,  Naoki IWAYA ,  Takahiro IMADA ,  Hajime GOTOH ,  Akira SUZUKI ,  Masaaki YOSHIKAWA

发明人： Tadashi OGAWA ,  Kenji ISHII ,  Teppei KAWATA ,  Arinobu YOSHIURA ,  Toshihiko SHIMOKAWA ,  Kensuke YAMAJI ,  Yuji ARAI ,  Yoshiki YAMAGUCHI ,  Hiromasa TAKAGI ,  Naoki IWAYA ,  Takahiro IMADA ,  Hajime GOTOH ,  Akira SUZUKI ,  Masaaki YOSHIKAWA

IPC分类号： G03G15/20

CPC分类号： G03G21/1685 ,  G03G15/2053 ,  G03G2215/2035

摘要： A fixing device capable of incorporating in an image forming apparatus includes a belt unit including a rotatable elastic endless belt having a sleeve shape without a driving shaft and a nip forming member disposed contactable against an inner surface of the endless belt, and a pressing member to form a nip contact portion through which a recording medium passes by pressing against the nip forming member via the endless belt. The endless belt is configured to be removable from the fixing device without contacting the endless belt.

摘要翻译： 能够结合在图像形成装置中的固定装置包括带单元，其包括具有套筒形状的旋转弹性环形带，而不具有驱动轴和可与环形带的内表面接触的夹持形成构件，以及按压构件 形成压区接触部分，记录介质通过环状带压靠在辊隙形成部件上而通过。 环形带被构造成可以从固定装置移除而不接触环形带。

公开(公告)号：US20120121305A1

公开(公告)日：2012-05-17

申请号：US13293794

申请日：2011-11-10

申请人： Masaaki YOSHIKAWA ,  Yuji ARAI ,  Hiromasa TAKAGI ,  Yoshiki YAMAGUCHI ,  Arinobu YOSHIURA ,  Toshihiko SHIMOKAWA ,  Tetsuo TOKUDA ,  Yutaka IKEBUCHI ,  Kenji ISHII ,  Naoki IWAYA ,  Takahiro IMADA ,  Hiroshi YOSHINAGA ,  Takuya SESHITA ,  Hajime GOTOH ,  Ippei FUJIMOTO

发明人： Masaaki YOSHIKAWA ,  Yuji ARAI ,  Hiromasa TAKAGI ,  Yoshiki YAMAGUCHI ,  Arinobu YOSHIURA ,  Toshihiko SHIMOKAWA ,  Tetsuo TOKUDA ,  Yutaka IKEBUCHI ,  Kenji ISHII ,  Naoki IWAYA ,  Takahiro IMADA ,  Hiroshi YOSHINAGA ,  Takuya SESHITA ,  Hajime GOTOH ,  Ippei FUJIMOTO

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，第二圆周部分和中游第三圆周部分。

公开(公告)号：US20160004197A1

公开(公告)日：2016-01-07

申请号：US14851583

申请日：2015-09-11

申请人： Takahiro IMADA ,  Masaaki YOSHIKAWA ,  Kenji ISHII ,  Hiroshi YOSHINAGA ,  Yuji ARAI ,  Naoki IWAYA ,  Tetsuo TOKUDA ,  Hiromasa TAKAGI ,  Yoshiki YAMAGUCHI ,  Ippei FUJIMOTO ,  Takuya SESHITA ,  Yutaka IKEBUCHI ,  Arinobu YOSHIURA ,  Toshihiko SHIMOKAWA ,  Hajime GOTOH

发明人： Takahiro IMADA ,  Masaaki YOSHIKAWA ,  Kenji ISHII ,  Hiroshi YOSHINAGA ,  Yuji ARAI ,  Naoki IWAYA ,  Tetsuo TOKUDA ,  Hiromasa TAKAGI ,  Yoshiki YAMAGUCHI ,  Ippei FUJIMOTO ,  Takuya SESHITA ,  Yutaka IKEBUCHI ,  Arinobu YOSHIURA ,  Toshihiko SHIMOKAWA ,  Hajime GOTOH

IPC分类号： G03G15/20

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

摘要： According to an embodiments, a fixing device includes: an endless fixing member; a heating unit that is provided inside an inner peripheral surface of the fixing member; and a nip forming unit that comes into press-contact with a rotationally driven pressing member with the fixing member interposed therebetween to form a nip. The nip forming unit has a shape in which a center of a contact surface protrudes toward the pressing member compared to both ends. The nip forming unit has a protruding amount at a center toward the pressing member compared to both ends of the nip forming unit in no-load state is set to be less than a bent amount of the nip forming unit when the nip forming unit comes into press-contact with the pressing member with the fixing member interposed therebetween.

摘要翻译： 根据实施例，固定装置包括：环形固定构件; 加热单元，设置在所述固定构件的内周面的内侧; 以及辊隙形成单元，其与固定构件夹在其间的与旋转驱动的按压构件压力接触以形成辊隙。 辊隙形成单元具有与两端相比接触表面的中心朝向按压构件突出的形状。 压区形成单元在空载状态下与夹紧形成单元的两端相比，在朝向加压构件的中心处具有突出量设定为小于压区形成单元的弯曲量时 与固定构件夹在其间的按压构件压接。