公开(公告)号：US20140341627A1

公开(公告)日：2014-11-20

申请号：US14269358

申请日：2014-05-05

申请人： Masaaki YOSHIKAWA ,  Takayuki SEKI ,  Yuji ARAI ,  Hiroshi YOSHINAGA ,  Ryuuichi MIMBU ,  Takuya SESHITA ,  Shuntaro TAMAKI ,  Takeshi YAMAMOTO ,  Takahiro IMADA ,  Hajime GOTOH ,  Kazuya SAITO ,  Yutaka IKEBUCHI ,  Toshihiko SHIMOKAWA ,  Shuutaroh YUASA ,  Kensuke YAMAJI ,  Akira SUZUKI

发明人： Masaaki YOSHIKAWA ,  Takayuki SEKI ,  Yuji ARAI ,  Hiroshi YOSHINAGA ,  Ryuuichi MIMBU ,  Takuya SESHITA ,  Shuntaro TAMAKI ,  Takeshi YAMAMOTO ,  Takahiro IMADA ,  Hajime GOTOH ,  Kazuya SAITO ,  Yutaka IKEBUCHI ,  Toshihiko SHIMOKAWA ,  Shuutaroh YUASA ,  Kensuke YAMAJI ,  Akira SUZUKI

IPC分类号： G03G15/20

CPC分类号： G03G15/2053 ,  G03G2215/2035

摘要： A fixing device includes a fixing rotator rotatable in a predetermined direction of rotation and a nip formation assembly contacting an inner circumferential surface of the fixing rotator. An opposed rotator presses against the nip formation assembly via the fixing rotator to form a fixing nip between the fixing rotator and the opposed rotator, through which a recording medium is conveyed. A support, disposed opposite the inner circumferential surface of the fixing rotator, supports the nip formation assembly. A heater, disposed opposite the inner circumferential surface of the fixing rotator, heats the fixing rotator. A reflector, disposed opposite an outer circumferential surface of the fixing rotator, reflects heat radiated from the fixing rotator onto the fixing rotator. The reflector spans a circumferential span of the fixing rotator where the fixing rotator is spaced apart from the support with a decreased interval therebetween.

摘要翻译： 定影装置包括可沿预定旋转方向旋转的定影旋转器和与定影旋转器的内圆周表面接触的压区形成组件。 相对的旋转体通过固定旋转器压靠辊隙形成组件，以在固定旋转体和相对旋转体之间形成定影辊隙，记录介质通过该固定辊隙传送。 与固定旋转体的内周面相对设置的支撑件支撑辊隙形成组件。 与定影旋转体的内周面相对设置的加热器加热固定旋转体。 与固定旋转体的外周表面相对设置的反射器将从固定旋转体辐射的热量反射到定影旋转体上。 反射器跨过固定旋转器的周向跨度，其中固定旋转体与支撑件间隔开，间隔减小。

公开(公告)号：US20140341626A1

公开(公告)日：2014-11-20

申请号：US14269314

申请日：2014-05-05

申请人： Ryuuichi MIMBU ,  Masaaki YOSHIKAWA ,  Takayuki SEKI ,  Takeshi YAMAMOTO ,  Yutaka IKEBUCHI ,  Takuya SESHITA ,  Shuntaro TAMAKI ,  Hajime GOTOH ,  Takahiro IMADA ,  Kazuya SAITO ,  Toshihiko SHIMOKAWA ,  Shuutaroh YUASA ,  Kensuke YAMAJI ,  Akira SUZUKI ,  Hiroshi YOSHINAGA ,  Yuji ARAI

发明人： Ryuuichi MIMBU ,  Masaaki YOSHIKAWA ,  Takayuki SEKI ,  Takeshi YAMAMOTO ,  Yutaka IKEBUCHI ,  Takuya SESHITA ,  Shuntaro TAMAKI ,  Hajime GOTOH ,  Takahiro IMADA ,  Kazuya SAITO ,  Toshihiko SHIMOKAWA ,  Shuutaroh YUASA ,  Kensuke YAMAJI ,  Akira SUZUKI ,  Hiroshi YOSHINAGA ,  Yuji ARAI

IPC分类号： G03G15/20

CPC分类号： G03G15/2032 ,  G03G15/2017 ,  G03G15/2042

摘要： A fixing device includes a fixing rotator heated by a heater and a pressing rotator to press against the fixing rotator to form a fixing nip therebetween. A heating span adjuster, interposed between the heater and the fixing rotator, is movable in a circumferential direction of the fixing rotator. The heating span adjuster moves to a retracted position where the heating span adjuster allows the heater to heat the fixing rotator in an increased axial heating span of the fixing rotator after the heater starts heating the fixing rotator until the fixing rotator and the pressing rotator start conveying the recording medium through the fixing nip. The heating span adjuster at the retracted position is outboard from a circumferential, direct heating span of the fixing rotator where the heater heats the fixing rotator directly.

摘要翻译： 定影装置包括由加热器加热的定影旋转器和按压旋转器以压靠固定旋转器以在其间形成定影辊隙。 插入在加热器和定影旋转器之间的加热跨度调节器可在定影旋转器的圆周方向上移动。 加热跨度调节器移动到缩回位置，在加热范围调整器允许加热器在加热器开始加热定影旋转器之后加热固定旋转器的增加的轴向加热跨度，直到定影旋转器和按压旋转器开始传送 记录介质通过定影辊隙。 在缩回位置的加热跨度调节器从定影旋转器的周向，直接加热跨度外侧，其中加热器直接加热定影旋转器。

公开(公告)号：US20140356036A1

公开(公告)日：2014-12-04

申请号：US14277477

申请日：2014-05-14

申请人： Toshihiko SHIMOKAWA ,  Masaaki YOSHIKAWA ,  Takayuki SEKI ,  Yuji ARAI ,  Takeshi YAMAMOTO ,  Ryuuichi MIMBU ,  Yutaka IKEBUCHI ,  Takuya SESHITA ,  Shuntaro TAMAKI ,  Hajime GOTOH ,  Takahiro IMADA ,  Kazuya SAITO ,  Shuutaroh YUASA ,  Kensuke YAMAJI ,  Akira SUZUKI ,  Hiroshi YOSHINAGA

发明人： Toshihiko SHIMOKAWA ,  Masaaki YOSHIKAWA ,  Takayuki SEKI ,  Yuji ARAI ,  Takeshi YAMAMOTO ,  Ryuuichi MIMBU ,  Yutaka IKEBUCHI ,  Takuya SESHITA ,  Shuntaro TAMAKI ,  Hajime GOTOH ,  Takahiro IMADA ,  Kazuya SAITO ,  Shuutaroh YUASA ,  Kensuke YAMAJI ,  Akira SUZUKI ,  Hiroshi YOSHINAGA

IPC分类号： G03G15/20

CPC分类号： G03G15/2053 ,  G03G2215/2035

摘要： A fixing device includes a first heat generator and a second heat generator that heat a fixing rotator. A support is disposed inside the fixing rotator. A reflector is mounted on the support and interposed between the support and each of the first heat generator and the second heat generator to reflect light radiated from the first heat generator and the second heat generator toward the fixing rotator. The reflector includes a body mounted on the support and a shield portion projecting from the body toward the first heat generator and the second heat generator to shield the fixing rotator from the first heat generator and the second heat generator. The shield portion includes a wing disposed opposite a non-conveyance span of the fixing rotator in the axial direction thereof where a recording medium is not conveyed over the fixing rotator.

摘要翻译： 定影装置包括第一热发生器和加热定影旋转器的第二热发生器。 支撑件设置在定影旋转器的内部。 反射器安装在支撑件上并且插入在支撑件和第一热发生器和第二热发生器中的每一个之间以将从第一热发生器和第二发热体辐射的光反射到固定旋转器。 反射器包括安装在支撑体上的主体和从主体向第一热发生器突出的屏蔽部分和第二热发生器，用于屏蔽来自第一发热体和第二发热体的固定旋转体。 屏蔽部分包括在固定旋转体的轴向方向上相对于固定旋转体的非传送跨度相对的翼，其中记录介质不在定影旋转器上传送。

公开(公告)号：US20140356037A1

公开(公告)日：2014-12-04

申请号：US14278252

申请日：2014-05-15

申请人： Toshihiko SHIMOKAWA ,  Yutaka IKEBUCHI ,  Hiroshi YOSHINAGA ,  Takayuki SEKI ,  Yuji ARAI ,  Ryuuichi MIMBU ,  Shuntaro TAMAKI ,  Kazuya SAITO ,  Shuutaroh YUASA ,  Masaaki YOSHIKAWA ,  Takuya SESHITA ,  Hajime GOTOH ,  Takahiro IMADA ,  Kensuke YAMAJI ,  Akira SUZUKI

发明人： Toshihiko SHIMOKAWA ,  Yutaka IKEBUCHI ,  Hiroshi YOSHINAGA ,  Takayuki SEKI ,  Yuji ARAI ,  Ryuuichi MIMBU ,  Shuntaro TAMAKI ,  Kazuya SAITO ,  Shuutaroh YUASA ,  Masaaki YOSHIKAWA ,  Takuya SESHITA ,  Hajime GOTOH ,  Takahiro IMADA ,  Kensuke YAMAJI ,  Akira SUZUKI

IPC分类号： G03G15/20

CPC分类号： G03G15/2053 ,  G03G15/2017 ,  G03G15/2039 ,  G03G15/2042 ,  G03G2215/2035

摘要： A fixing device includes a fixing rotator, a first heat generator and a second heat generator that heat the fixing rotator, and a support disposed inside the fixing rotator. A reflector, interposed between the support and each of the first heat generator and the second heat generator, reflects light radiated from the first heat generator and the second heat generator toward the fixing rotator. The reflector includes a body mounted on the support and a shield portion projecting from the body toward the first heat generator and the second heat generator to shield the fixing rotator from the first heat generator and the second heat generator. An electric circuit is connected to the first heat generator and the second heat generator. A heat generation restrainer is provided in the electric circuit to restrict heat generation in the electric circuit.

摘要翻译： 定影装置包括固定旋转器，第一热发生器和加热定影旋转器的第二热发生器，以及设置在定影旋转器内的支撑件。 插入在支撑件和第一热发生器和第二热发生器中的每一个之间的反射器将从第一热发生器和第二发热体辐射的光反射到定影转子。 反射器包括安装在支撑体上的主体和从主体向第一热发生器突出的屏蔽部分和第二热发生器，用于屏蔽来自第一发热体和第二发热体的固定旋转体。 电路连接到第一热发生器和第二热发生器。 在电路中设置有发热抑制器，以限制电路中的发热。

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：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：US20160327891A1

公开(公告)日：2016-11-10

申请号：US15216863

申请日：2016-07-22

申请人： Yutaka IKEBUCHI ,  Hiroshi YOSHINAGA ,  Takayuki SEKI ,  Yuji ARAI ,  Ryuuichi MIMBU ,  Shuntaro TAMAKI ,  Kazuya SAITO ,  Shuutaroh YUASA ,  Toshihiko SHIMOKAWA ,  Masaaki YOSHIKAWA ,  Toshiharu HACHISUKA

发明人： Yutaka IKEBUCHI ,  Hiroshi YOSHINAGA ,  Takayuki SEKI ,  Yuji ARAI ,  Ryuuichi MIMBU ,  Shuntaro TAMAKI ,  Kazuya SAITO ,  Shuutaroh YUASA ,  Toshihiko SHIMOKAWA ,  Masaaki YOSHIKAWA ,  Toshiharu HACHISUKA

IPC分类号： G03G15/20 ,  G03G15/00

CPC分类号： G03G15/2039 ,  G03G15/2042 ,  G03G15/205 ,  G03G15/80 ,  G03G2215/2035

摘要： An image forming apparatus includes a first heater disposed opposite and heating at least a center of a fixing belt in an axial direction thereof and a second heater disposed opposite and heating at least a lateral end of the fixing belt in the axial direction thereof. A power supply supplies power to the first heater and the second heater. A controller that controls the power supply includes a calculator to calculate an elapsed time elapsed after at least one of the first heater and the second heater starts heating the fixing belt. The controller controls the power supply to supply power to the first heater and the second heater such that a power density of the second heater is greater than a power density of the first heater when the elapsed time calculated by the calculator is smaller than a predetermined time.

公开(公告)号：US20150185671A1

公开(公告)日：2015-07-02

申请号：US14564291

申请日：2014-12-09

申请人： Yutaka IKEBUCHI ,  Hiroshi YOSHINAGA ,  Takayuki SEKI ,  Yuji ARAI ,  Ryuuichi MIMBU ,  Shuntaro TAMAKI ,  Kazuya SAITO ,  Shuutaroh YUASA ,  Toshihiko SHIMOKAWA ,  Masaaki YOSHIKAWA ,  Toshiharu HACHISUKA

发明人： Yutaka IKEBUCHI ,  Hiroshi YOSHINAGA ,  Takayuki SEKI ,  Yuji ARAI ,  Ryuuichi MIMBU ,  Shuntaro TAMAKI ,  Kazuya SAITO ,  Shuutaroh YUASA ,  Toshihiko SHIMOKAWA ,  Masaaki YOSHIKAWA ,  Toshiharu HACHISUKA

IPC分类号： G03G15/20

CPC分类号： G03G15/2039 ,  G03G15/2042 ,  G03G15/205 ,  G03G15/80 ,  G03G2215/2035

摘要： An image forming apparatus includes a first heater disposed opposite and heating at least a center of a fixing belt in an axial direction thereof and a second heater disposed opposite and heating at least a lateral end of the fixing belt in the axial direction thereof. A power supply supplies power to the first heater and the second heater. A controller that controls the power supply includes a calculator to calculate an elapsed time elapsed after at least one of the first heater and the second heater starts heating the fixing belt. The controller controls the power supply to supply power to the first heater and the second heater such that a power density of the second heater is greater than a power density of the first heater when the elapsed time calculated by the calculator is smaller than a predetermined time.

摘要翻译： 图像形成装置包括：第一加热器，其相对设置并至少加热定影带的沿其轴向的中心;以及第二加热器，其相对设置并加热定影带的轴向的至少一个侧端。 电源为第一加热器和第二加热器供电。 控制电源的控制器包括计算器，用于计算在第一加热器和第二加热器中的至少一个开始加热定影带之后经过的经过时间。 控制器控制电源以向第一加热器和第二加热器供电，使得当由计算器计算的经过时间小于预定时间时，第二加热器的功率密度大于第一加热器的功率密度 。

公开(公告)号：US20130209125A1

公开(公告)日：2013-08-15

申请号：US13751922

申请日：2013-01-28

申请人： Takeshi UCHITANI ,  Masahiko SATOH ,  Masaaki YOSHIKAWA ,  Kenji ISHII ,  Tadashi OGAWA ,  Takahiro IMADA ,  Hiromasa TAKAGI ,  Kazuya SAITO ,  Naoki IWAYA ,  Toshihiko SHIMOKAWA ,  Kensuke YAMAJI ,  Teppei KAWATA ,  Takamasa HASE ,  Takuya SESHITA ,  Shuutaroh YUASA ,  Arinobu YOSHIURA ,  Hajime GOTOH ,  Akira SUZUKI ,  Hiroshi YOSHINAGA

发明人： Takeshi UCHITANI ,  Masahiko SATOH ,  Masaaki YOSHIKAWA ,  Kenji ISHII ,  Tadashi OGAWA ,  Takahiro IMADA ,  Hiromasa TAKAGI ,  Kazuya SAITO ,  Naoki IWAYA ,  Toshihiko SHIMOKAWA ,  Kensuke YAMAJI ,  Teppei KAWATA ,  Takamasa HASE ,  Takuya SESHITA ,  Shuutaroh YUASA ,  Arinobu YOSHIURA ,  Hajime GOTOH ,  Akira SUZUKI ,  Hiroshi YOSHINAGA

IPC分类号： G03G15/20

CPC分类号： G03G15/2078 ,  G03G15/2039 ,  G03G15/2042 ,  G03G2215/2035

摘要： A fixing device for fixing an unfixed image onto a recording medium includes a fixing belt, a nip forming member, an opposing rotary member, a heater, and a temperature detector. The fixing belt is formed into a loop to move endlessly and fix the unfixed image on the recording medium. The nip forming member is disposed inside the loop formed by the fixing belt. The opposing rotary member contacts the nip forming member via the fixing belt to form a nip portion therebetween while rotating. The heater heats the fixing belt at a place other than the nip portion. The temperature detector detects a temperature of the surface of the fixing belt. The temperature detector detects the temperature near a place of the fixing belt that easily deforms as the fixing belt is heated by the heater.

摘要翻译： 用于将未定影图像固定到记录介质上的定影装置包括定影带，辊隙形成构件，相对旋转构件，加热器和温度检测器。 将定影带形成为环状以循环移动并将未定影图像固定在记录介质上。 辊隙形成构件设置在由定影带形成的环内。 相对的旋转构件经由定影带与辊隙形成构件接触，在旋转的同时在其间形成夹持部。 加热器将定影带加热到夹持部以外的位置。 温度检测器检测定影带的表面的温度。 温度检测器检测定影带靠近加热器加热定影带时容易变形的位置附近的温度。