公开(公告)号：US20070170172A1

公开(公告)日：2007-07-26

申请号：US11589857

申请日：2006-10-31

申请人： Yutaka Otsuka ,  Yoshihisa Fujimoto ,  Koji Takahashi ,  Naoki Yamamoto

发明人： Yutaka Otsuka ,  Yoshihisa Fujimoto ,  Koji Takahashi ,  Naoki Yamamoto

IPC分类号： G03G15/20 ,  H05B6/14

CPC分类号： H05B6/145 ,  G03G15/2003

摘要： A Fixing device has a heat roller, a magnetic flux generating element, and a magnetic flux block section. The magnetic flux block section for blocking magnetic flux flowing from a magnetic flux generating element to a heat roller is moved to a position at which the magnetic flux does not cause the heat roller to generate heat when rotation of the heat roller stops. The magnetic flux block section is moved to a position at which the heat roller generates heat when the heat roller rotates. Therefore, when rotation of the heat roller stops, even if electric current is applied to the magnetic flux generating element to generate magnetic flux from the magnetic flux generating element, heat generation by the magnetic flux generating element is prevented, so that smoking and firing of the heating element is suppressed.

摘要翻译： A固定装置具有加热辊，磁通量产生元件和磁通量块部。 用于阻止从磁通量产生元件流到加热辊的磁通量的磁通块部分移动到当热辊停止转动时磁通量不会导致热辊产生热量的位置。 当加热辊旋转时，磁通量块部移动到加热辊产生热量的位置。 因此，当加热辊的旋转停止时，即使向磁通产生元件施加电流以从磁通量产生元件产生磁通量，也防止了由磁通量产生元件产生的热量，从而吸烟和烧制 加热元件被抑制。

公开(公告)号：US07283757B2

公开(公告)日：2007-10-16

申请号：US11017660

申请日：2004-12-22

申请人： Yoshihisa Fujimoto ,  Masami Miyazaki ,  Yutaka Otsuka ,  Koji Takahashi ,  Naoki Yamamoto

发明人： Yoshihisa Fujimoto ,  Masami Miyazaki ,  Yutaka Otsuka ,  Koji Takahashi ,  Naoki Yamamoto

IPC分类号： G03G15/20 ,  H05B6/14

CPC分类号： G03G15/2053 ,  G03G15/2039

摘要： A fixing device has a fixing belt, a trembler coil for heating the fixing belt with magnetic flux, a ferrite core around which the trembler coil is wound, and a heater for heating the ferrite core. The ferrite core has a Curie temperature which is between a fixing temperature of the fixing belt and a smoking start temperature of the fixing belt. The heating of the ferrite core with the heater allows the temperature of the ferrite core to reach the Curie temperature before the temperature of the fixing belt reaches a smoking start temperature. Thereby, an excessive rise in temperature of the fixing belt is suppressed, which prevents the fixing belt from smoking and igniting.

摘要翻译： 定影装置具有定影带，用于加热具有磁通量的定影带的颤音线圈，缠绕有颤音线圈的铁氧体磁芯和用于加热铁氧体磁心的加热器。 铁氧体磁芯具有在定影带的定影温度和定影带的吸烟开始温度之间的居里温度。 利用加热器对铁氧体磁芯的加热允许铁氧体磁芯的温度在定影带的温度达到吸烟开始温度之前达到居里温度。 因此，定影带的温度过度上升被抑制，防止定影带吸烟和点燃。

公开(公告)号：US20060088324A1

公开(公告)日：2006-04-27

申请号：US11017660

申请日：2004-12-22

申请人： Yoshihisa Fujimoto ,  Masami Miyazaki ,  Yutaka Otsuka ,  Koji Takahashi ,  Naoki Yamamoto

发明人： Yoshihisa Fujimoto ,  Masami Miyazaki ,  Yutaka Otsuka ,  Koji Takahashi ,  Naoki Yamamoto

IPC分类号： G03G15/20

CPC分类号： G03G15/2053 ,  G03G15/2039

摘要： A fixing device has a fixing belt, a trembler coil for heating the fixing belt with magnetic flux, a ferrite core around which the trembler coil is wound, and a heater for heating the ferrite core. The ferrite core has a Curie temperature which is between a fixing temperature of the fixing belt and a smoking start temperature of the fixing belt. The heating of the ferrite core with the heater allows the temperature of the ferrite core to reach the Curie temperature before the temperature of the fixing belt reaches a smoking start temperature. Thereby, an excessive rise in temperature of the fixing belt is suppressed, which prevents the fixing belt from smoking and igniting.

摘要翻译： 定影装置具有定影带，用于加热具有磁通量的定影带的颤音线圈，缠绕有颤音线圈的铁氧体磁芯和用于加热铁氧体磁心的加热器。 铁氧体磁芯具有在定影带的定影温度和定影带的吸烟开始温度之间的居里温度。 利用加热器对铁氧体磁芯的加热允许铁氧体磁芯的温度在定影带的温度达到吸烟开始温度之前达到居里温度。 因此，定影带的温度过度上升被抑制，防止定影带吸烟和点燃。

公开(公告)号：US20120243896A1

公开(公告)日：2012-09-27

申请号：US13422540

申请日：2012-03-16

申请人： Yutaka Otsuka ,  Nobuyasu TAMURA ,  Koji TAKAHASHI

发明人： Yutaka Otsuka ,  Nobuyasu TAMURA ,  Koji TAKAHASHI

IPC分类号： G03G15/20

CPC分类号： G03G15/205

摘要： A fixing device includes a heating roller which is heated by a heater, a pressure roller which comes into contact with a fixing belt to form a nip portion, and a thermopile capable of measuring a surface temperature of the fixing belt. The fixing device moves that portion on the surface of the fixing belt which was located at the nip portion with the pressure roller at the start of a warm-up operation, to a measurement location of the thermopile. The fixing device uses the thermopile to measure the temperature of that portion on the surface of the fixing belt moved to the measurement location. The fixing device controls the warm-up operation on the basis of the temperature measured by the thermopile. This can reduce the time required for the warm-up operation.

摘要翻译： 定影装置包括由加热器加热的加热辊，与定影带接触以形成夹持部的加压辊，以及能够测量定影带的表面温度的热电堆。 固定装置将热启动操作开始时位于辊隙部位的定影带的表面部与压力辊一起移动到热电堆的测量位置。 定影装置使用热电堆测量移动到测量位置的定影带的表面上的该部分的温度。 定影装置基于由热电堆测量的温度来控制预热操作。 这可以减少预热操作所需的时间。

公开(公告)号：US07386244B2

公开(公告)日：2008-06-10

申请号：US11417019

申请日：2006-05-04

申请人： Yutaka Otsuka

发明人： Yutaka Otsuka

IPC分类号： G03G15/20

CPC分类号： G03G15/205 ,  G03G2215/2016 ,  G03G2215/2038

摘要： A fixing device includes a pressure thermister for detecting temperature of a pressure roller. The fixing device also includes a thermal coating member on the opposite side of the pressure roller with respect to the pressure thermister. The thermal coating member has a thermal conductivity of 10W/m·K or more. The heat from the pressure roller is easily transferred to the thermal coating member because of the high thermal conductivity, so that the thermal coating member becomes warm quickly. This increases a temperature rise rate in the pressure thermister and therefore reduces time taken for warm-up of the fixing device.

摘要翻译： 定影装置包括用于检测加压辊的温度的压力热敏电阻。 定影装置还包括在压力辊相对于压力热敏电阻的相对侧上的热涂层构件。 热涂层部件的导热率为10W / m·K以上。 来自加压辊的热量由于导热性高而易于转移到热涂层部件，使得热敏涂层部件变得温暖。 这增加了压力热敏电阻器中的升温速率，因此减少了预热定影装置所需的时间。

公开(公告)号：US20070134017A1

公开(公告)日：2007-06-14

申请号：US11417019

申请日：2006-05-04

申请人： Yutaka Otsuka

发明人： Yutaka Otsuka

IPC分类号： G03G15/20

CPC分类号： G03G15/205 ,  G03G2215/2016 ,  G03G2215/2038

摘要： A fixing device includes a pressure thermister for detecting temperature of a pressure roller. The fixing device also includes a thermal coating member on the opposite side of the pressure roller with respect to the pressure thermister. The thermal coating member has a thermal conductivity of 10 W/m·K or more. The heat from the pressure roller is easily transferred to the thermal coating member because of the high thermal conductivity, so that the thermal coating member becomes warm quickly. This increases a temperature rise rate in the pressure thermister and therefore reduces time taken for warm-up of the fixing device.

摘要翻译： 定影装置包括用于检测加压辊的温度的压力热敏电阻。 定影装置还包括在压力辊相对于压力热敏电阻的相对侧上的热涂层构件。 热涂层部件的导热率为10W / m·K以上。 来自加压辊的热量由于导热性高而易于转移到热涂层部件，使得热敏涂层部件变得温暖。 这增加了压力热敏电阻器中的升温速率，因此减少了预热定影装置所需的时间。

公开(公告)号：US07149464B2

公开(公告)日：2006-12-12

申请号：US10805250

申请日：2004-03-22

申请人： Satoru Yoneda ,  Noboru Yonekawa ,  Yutaka Otsuka ,  Shigeo Nakamura

发明人： Satoru Yoneda ,  Noboru Yonekawa ,  Yutaka Otsuka ,  Shigeo Nakamura

IPC分类号： G03G15/20

CPC分类号： G03G15/2064 ,  G03G2215/2016 ,  G03G2215/2038

摘要： A belt-type fixing device is provided in which a wide fixing nip having a generally flat pressure distribution with respect to a paper feeding direction can be formed.The belt-type fixing device of the invention has a nip forming member that is fixed inside an endless-sheet-like fixing belt to be heated so as to be incapable of rotating, and a rotatable pressurizing roller that is in pressure contact with the nip forming member with the fixing belt interposed between. Contact part between the fixing belt and the pressurizing roller forms a fixing nip, and a surface of the nip forming member that is opposite to the pressurizing roller is configured as a curved surface extending along an outer circumferential surface of the pressurizing roller so that a pressure distribution in the fixing nip is made generally flat with respect to the paper feeding direction.

摘要翻译： 提供了一种带式定影装置，其中可以形成具有相对于送纸方向的大致平坦的压力分布的宽的定影辊隙。 本发明的带式固定装置具有夹持形成构件，其被固定在被加热以便不能旋转的环形片状定影带内，以及与辊隙压力接触的可旋转加压辊 形成构件，其间具有定影带。 定影带与加压辊之间的接触部分形成定影辊隙，并且与加压辊相对的辊隙形成部件的表面被构造为沿着加压辊的外周面延伸的弯曲表面， 定影辊隙中的分布通常相对于送纸方向平坦。

公开(公告)号：US06980764B2

公开(公告)日：2005-12-27

申请号：US10805368

申请日：2004-03-22

申请人： Yutaka Otsuka ,  Satoru Yoneda

发明人： Yutaka Otsuka ,  Satoru Yoneda

IPC分类号： G03G15/20 ,  G01V3/00

CPC分类号： G03G15/2053 ,  G03G15/2064 ,  G03G2215/2016 ,  G03G2215/2038

摘要： A belt-type fixing device is provided that allows reduction in driving torque for a fixing belt without deteriorating performance of heat transfer from a heating roller to the fixing belt.The belt-type fixing device of the present invention has an endless-sheet-like fixing belt to be heated that is wound around a rotatable heating roller and around a nip forming member fixed so as to be incapable of rotating, and has a pressurizing roller that can be driven to rotate and that is in pressure contact with the nip forming member with the fixing belt interposed between. Contact part between the fixing belt and the pressurizing roller forms a fixing nip. For a tension load W [N] on the fixing belt that is driven and rotated by the pressurizing roller, and a width L [m] of the fixing belt, W/L is set in a range from 18.0 to 107.9 [N/m].

摘要翻译： 提供一种带式定影装置，其能够降低定影带的驱动扭矩，而不会降低从加热辊到定影带的热传递的性能。 本发明的带式定影装置具有被卷绕在可旋转加热辊周围并被固定为不能旋转的辊隙形成部件的待加热的环形片状定影带，并且具有加压辊 其可以被驱动旋转，并且与间隙形成构件压力接触，并且定影带置于其间。 定影带与加压辊之间的接触部分形成定影辊隙。 对于通过加压辊驱动和旋转的定影带上的张力负载W [N]和定影带的宽度L [m]，W / L设定在18.0至107.9的范围内[N / m ]。

公开(公告)号：US20050265741A1

公开(公告)日：2005-12-01

申请号：US10977012

申请日：2004-11-01

申请人： Yutaka Otsuka

发明人： Yutaka Otsuka

IPC分类号： G03G15/20

CPC分类号： G03G15/2039 ,  G03G2215/2009 ,  G03G2215/2016 ,  G03G2215/2038

摘要： An image forming apparatus has a heating rotator 12 that is heated by a first heat source 18, a pressurizing rotator 24 that is heated by a second heat source 28, that is in pressure contact with the heating rotator 12, and that forms a fixing nip 26 between the pressurizing rotator 24 and the heating rotator 12, a temperature sensor St that detects a temperature in the apparatus, and a controller 124 that controls temperatures of the heating rotator 12 and of the pressurizing rotator 24 by on-off control over the first heat source 18 and the second heat source 28, respectively, and that sets the temperature of the pressurizing rotator 24 higher than a normal temperature on condition that the temperature detected by the temperature sensor St exceeds a specified value.

摘要翻译： 图像形成装置具有由第一热源18加热的加热旋转体12，与加热旋转体12压力接触的第二热源28加热的加压旋转体24，形成定影夹持部 26，加压旋转体24和加热旋转体12之间的温度传感器St，检测装置内的温度的温度传感器St，以及控制器124，其控制加热旋转体12和加压旋转体24的温度， 热源18和第二热源28，并且在由温度传感器St检测到的温度超过规定值的条件下，将加压旋转体24的温度设定为高于常温。

公开(公告)号：US08032046B2

公开(公告)日：2011-10-04

申请号：US12358889

申请日：2009-01-23

申请人： Yutaka Otsuka

发明人： Yutaka Otsuka

IPC分类号： G03G15/20

CPC分类号： G03G15/2039

摘要： To control a temperature of a rotating member for fixing an image during standby, an image forming device can suppress overshoot of the temperature of the rotating member occurred when a fixing state is switched to a standby state. Determining the standby temperature is higher than the fixing temperature (Step S103: YES), a CPU 61 controls a temperature of a heating roller 51 to be kept substantially at a first temperature (Step S104). After a lapse of first given time (Step S105: YES), the CPU 61 stops rotation of the heating roller 51, a fixing roller 52 and the pressure roller 54 (Step S107). The CPU 61 controls the temperature to be kept substantially at the second temperature (Step S108). After a lapse of second given time (Step S109: YES), the CPU 61 controls the temperature to be kept substantially at the standby temperature, and switches to the standby state.

摘要翻译： 为了控制待机期间用于固定图像的旋转构件的温度，当定影状态切换到待机状态时，图像形成装置可以抑制发生的旋转构件的温度的过冲。 确定待机温度高于定影温度（步骤S103：是），CPU61控制加热辊51的温度基本保持在第一温度（步骤S104）。 在第一给定时间过去之后（步骤S105：是），CPU 61停止加热辊51，定影辊52和加压辊54的旋转（步骤S107）。 CPU61控制温度基本保持在第二温度（步骤S108）。 在经过第二给定时间之后（步骤S109：是），CPU61控制温度基本保持在待机温度，并切换到待机状态。