公开(公告)号：US08774667B2

公开(公告)日：2014-07-08

申请号：US13051033

申请日：2011-03-18

申请人： Takashi Mukai ,  Toshiaki Kagawa ,  Hiroyuki Yamaji

发明人： Takashi Mukai ,  Toshiaki Kagawa ,  Hiroyuki Yamaji

IPC分类号： G03G15/20

CPC分类号： G03G15/2039 ,  G03G2215/0129

摘要： An image forming apparatus is provided. The image forming apparatus includes an image forming section, an intermediate transfer section, a secondary transfer section, a fixing section, a power source, a voltage detection section, a temperature detection section, and a fixing section control circuit. The fixing section control circuit includes a switching control section, a voltage judgment section, a temperature judgment section, and a preparation control section. When the switching control section switches the current conduction state to the heat source and the driving section from an off conduction state to an on conduction state and the voltage judgment section judges to be less than a threshold voltage, the preparation control section controls the preparation operation of the heating section such that the switching control section continues the on conduction state over a given idle time after the temperature judgment section has judged to be a preset temperature or higher.

摘要翻译： 提供一种图像形成装置。 图像形成装置包括图像形成部，中间转印部，二次转印部，固定部，电源，电压检测部，温度检测部和固定部控制电路。 定影部控制电路包括开关控制部，电压判定部，温度判定部和准备控制部。 当开关控制部分将导通状态从热源和驱动部分切换到导通状态，并且电压判断部分判断为小于阈值电压时，准备控制部分控制准备操作 使得在温度判定部判定为预设温度以上之后，切换控制部在规定的空闲时间内继续导通状态。

公开(公告)号：US08452220B2

公开(公告)日：2013-05-28

申请号：US12860986

申请日：2010-08-23

申请人： Toshiaki Kagawa

发明人： Toshiaki Kagawa

IPC分类号： G03G15/20

CPC分类号： G03G15/2007

摘要： A laser fixing device, which is for use in an electrophotographic image forming apparatus, including: a carrying device for carrying a sheet; and a laser array section which is made up of a plurality of laser sources arrayed in a line, the plurality of laser sources irradiating a non-fixed toner image, which is attached to the sheet that is being carried by the carrying device, with a laser beam so that the non-fixed toner image is fused and fixed to the sheet. In the laser fixing device, an irradiation region length and a sheet carrying speed are set so that tn≧0.259·mt1.5139, where mt is a maximum level of an attached-toner amount per unit area of the sheet (mg/cm2) in the image forming apparatus, and tn is an irradiation region crossing time (msec), which is found by dividing the irradiation region length by the sheet carrying speed, the irradiation region length being a length, in the direction in which the sheet is carried, of a region on the sheet which region is irradiated with the laser beam. According to this configuration, it is possible to prevent a void from occurring in the laser fixing device.

摘要翻译： 一种用于电子照相图像形成装置的激光固定装置，包括：用于承载片材的承载装置; 以及激光阵列部分，其由排列成一行的多个激光源组成，所述多个激光源照射附着在由所述携带装置携带的片材上的未固定的调色剂图像， 激光束，使得非固定的调色剂图像被熔融并固定在片材上。 在激光定影装置中，照射区域长度和片材承载速度被设定为tn≥0.259·mt1.5139，其中mt是每单位面积片材的附着调色剂量的最大值（mg / cm2 ），并且tn是照射区域交叉时间（msec），其通过将照射区域长度除以片材承载速度，照射区域长度为片材的方向上的长度来确定 携带有用激光束照射该片材的片材上的区域。 根据该结构，能够防止激光固定装置发生空隙。

公开(公告)号：US08295753B2

公开(公告)日：2012-10-23

申请号：US12759655

申请日：2010-04-13

申请人： Toshiaki Kagawa

发明人： Toshiaki Kagawa

IPC分类号： G03G15/20

CPC分类号： G03G15/2035 ,  G03G2215/2009 ,  G03G2215/2025

摘要： A fixing device having a fixing belt which satisfies 42.2≧ER≧0.1044×D×μ−0.5174, where: D represents an inner diameter of the fixing belt; A represents a second inner diameter of the fixing belt; ER represents an elongation rate of the fixing belt and is formulated as ER=(A−D)/D×100; and μ represents a coefficient of kinetic friction between the fixing belt and the fixing roller. The fixing device is thus arranged so that the fixing belt is driven by the fixing roller to rotate in a state where the pressing roller is separated from the fixing belt. This makes it possible to lengthen a life of a fixing belt, to shorten a warm-up time, and to reduce power consumption in a fixing device using a belt fixing method.

摘要翻译： 具有满足42.2≥RF≥0.1044×D×μ-0.5174的定影带的定影装置，其中：D表示定影带的内径; A表示定影带的第二内径; ER表示定影带的伸长率，表示为ER =（A-D）/ D×100; μ代表定影带和定影辊之间的动摩擦系数。 因此，定影装置被布置成使得定影带由定影辊驱动以在加压辊与定影带分离的状态下旋转。 这使得可以延长定影带的寿命，缩短预热时间，并且可以使用皮带固定方法来降低定影装置的功率消耗。

公开(公告)号：US08295726B2

公开(公告)日：2012-10-23

申请号：US12629149

申请日：2009-12-02

申请人： Toshiaki Kagawa ,  Susumu Murakami ,  Masashi Hirai ,  Atsushi Ide ,  Takashi Mukai

发明人： Toshiaki Kagawa ,  Susumu Murakami ,  Masashi Hirai ,  Atsushi Ide ,  Takashi Mukai

IPC分类号： G03G15/20

CPC分类号： G03G15/2039 ,  G03G15/2025 ,  G03G2215/00734 ,  G03G2215/2019

摘要： In a fixing device including (i) an external heat belt which abuts against a surface of a fixing roller so as to heat the fixing roller and (ii) a cleaning member which abuts against the external heat belt, a fixing temperature, which is a surface temperature of the fixing roller during a fixing process, is set per group into which recording media to be subjected to the fixing process are divided according to their widths in a direction of a rotary axis of the fixing roller, in such a way that the fixing temperature is set to a lower temperature for a group of narrower widths. This makes it possible to prevent a reduction in releasability of the fixing roller caused by a material, which is scraped off from the external heat belt by the cleaning member and then adhered to the fixing roller, thereby preventing the high-temperature offset.

摘要翻译： 在一种定影装置中，包括（i）外部加热带，其邻接定影辊的表面以加热定影辊;以及（ii）与外部加热带抵接的清洁部件，定影温度是 在定影处理期间定影辊的表面温度被设定为根据其在定影辊的旋转轴线的方向上的宽度被划分成待进行定影处理的记录介质的组，使得 对于一组较窄的宽度，定影温度被设定为较低的温度。 这使得可以防止定影辊由通过清洁部件从外部加热带刮掉并且然后粘附到定影辊上的材料引起的脱模性降低，从而防止高温偏移。

公开(公告)号：US20110236048A1

公开(公告)日：2011-09-29

申请号：US13051033

申请日：2011-03-18

申请人： Takashi MUKAI ,  Toshiaki Kagawa ,  Hiroyuki Yamaji

发明人： Takashi MUKAI ,  Toshiaki Kagawa ,  Hiroyuki Yamaji

IPC分类号： G03G15/20

CPC分类号： G03G15/2039 ,  G03G2215/0129

摘要： An image forming apparatus is provided. The image forming apparatus includes an image forming section, an intermediate transfer section, a secondary transfer section, a fixing section, a power source, a voltage detection section, a temperature detection section, and a fixing section control circuit. The fixing section control circuit includes a switching control section, a voltage judgment section, a temperature judgment section, and a preparation control section. When the switching control section switches the current conduction state to the heat source and the driving section from an off conduction state to an off conduction state and the voltage judgment section judges to be less than a threshold voltage, the preparation control section controls the preparation operation of the heating section such that the switching control section continues the on conduction state over a given idle time after the temperature judgment section has judged to be a preset temperature or higher.

摘要翻译： 提供一种图像形成装置。 图像形成装置包括图像形成部，中间转印部，二次转印部，固定部，电源，电压检测部，温度检测部和固定部控制电路。 定影部控制电路包括开关控制部，电压判定部，温度判定部和准备控制部。 当开关控制部分将电流导通状态切换到热源和驱动部分从断开导通状态到断开导通状态，并且电压判断部分判断为小于阈值电压时，准备控制部分控制准备操作 使得在温度判定部判定为预设温度以上之后，切换控制部在规定的空闲时间内继续导通状态。

公开(公告)号：US07868272B2

公开(公告)日：2011-01-11

申请号：US11179825

申请日：2005-07-13

申请人： Shogo Yokota ,  Tomohiro Maeda ,  Toshiaki Kagawa

发明人： Shogo Yokota ,  Tomohiro Maeda ,  Toshiaki Kagawa

IPC分类号： H05B6/14

CPC分类号： G03G15/2053 ,  H05B6/145

摘要： In an external heating type induction heating device in which a magnetic field producing means is arranged in the outer circumferential portion of a heating roller 1, two heat generating layers, namely a conductive shaft 1a and a surface heat generating layer 1c, are provided in the heating roller 1, and the surface heat generating layer 1c is formed having a thickness through which passes a portion of an alternating magnetic field, and the conductive shaft 1a at a center of the heating roller 1 is heated by a portion of the alternating magnetic field produced by the magnetic field producing means passing through the surface heat generating layer 1c to link to the conductive shaft 1a present at the center of the roller, thereby preventing a drop in a surface temperature of the heating roller 1.

摘要翻译： 在加热辊1的外周部配置有磁场产生装置的外部加热型感应加热装置中，在发热层1a，表面发热层1c中设置两个发热层 加热辊1和表面发热层1c形成为具有通过交变磁场的一部分的厚度，并且加热辊1的中心处的导电轴1a被交变磁场的一部分加热 由磁场产生装置产生的通过表面发热层1c连接到存在于辊的中心的导电轴1a，从而防止加热辊1的表面温度下降。

公开(公告)号：US20100183346A1

公开(公告)日：2010-07-22

申请号：US12686474

申请日：2010-01-13

申请人： Toshiaki Kagawa ,  Susumu Murakami ,  Masashi Hirai ,  Atsushi Ide ,  Takashi Mukai

发明人： Toshiaki Kagawa ,  Susumu Murakami ,  Masashi Hirai ,  Atsushi Ide ,  Takashi Mukai

IPC分类号： G03G15/20

CPC分类号： G03G15/2025 ,  G03G2215/2019

摘要： No covering layer is provided onto that abutting surface of an external heating belt which has contact with a cleaning member. Accordingly, a belt substrate is exposed and has contact with the cleaning member. This suppresses the occurrence of offset in a fixing device including (i) the external heating belt for having contact with the surface of the fixing roller so as to heat a fixing roller, and (ii) the cleaning member having contact with the external heating belt.

摘要翻译： 在与清洁部件接触的外部加热带的抵接面上没有设置覆盖层。 因此，带状基板被暴露并与清洁部件接触。 这抑制了在定影装置中产生偏移的发生，所述定影装置包括：（i）与定影辊的表面接触的外部加热带，以便加热定影辊;和（ii）与外部加热带接触的清洁部件 。

公开(公告)号：US20090263170A1

公开(公告)日：2009-10-22

申请号：US12425433

申请日：2009-04-17

申请人： Toshiaki Kagawa ,  Hiroyuki Kageyama

发明人： Toshiaki Kagawa ,  Hiroyuki Kageyama

IPC分类号： G03G15/20

CPC分类号： G03G15/2053 ,  G03G2215/2029 ,  G03G2215/2038 ,  G03G2215/2041

摘要： A fixing device includes a fixing belt for fixing an unfixed toner image onto a recording medium, a planar heating member for heating the fixing belt, and a pressure roller. The heating member includes a ceramic heat generating element having a PTC characteristic, and a high-thermal-conductive heat diffusion member. The fixing belt is formed in an endless shape and is supported around, at least, the high-thermal-conductive heat diffusion member, thereby to be heated. The ceramic heat generating element comes into contact with the fixing belt over the full width thereof with the high-thermal-conductive heat diffusion member interposed therebetween. The high-thermal-conductive heat diffusion member comes into contact with the fixing belt over the full width thereof and diffuses heat generated by the heat generating element, in the traveling direction of the fixing belt.

摘要翻译： 定影装置包括用于将未定影的调色剂图像定影到记录介质上的定影带，用于加热定影带的平面加热构件和加压辊。 加热构件包括具有PTC特性的陶瓷发热元件和高导热散热构件。 定影带形成为环状，并且至少被支撑在高导热性热扩散构件上，从而被加热。 陶瓷发热元件在整个宽度上与定影带接触，其中介于其间的高热传导热扩散元件。 高导热性热扩散构件在整个宽度上与定影带接触，并且在定影带的行进方向上扩散由发热元件产生的热量。

公开(公告)号：US07603069B2

公开(公告)日：2009-10-13

申请号：US11685244

申请日：2007-03-13

申请人： Shinji Yamana ,  Kenji Asakura ,  Toshiaki Kagawa ,  Hiroyuki Yamaji

发明人： Shinji Yamana ,  Kenji Asakura ,  Toshiaki Kagawa ,  Hiroyuki Yamaji

IPC分类号： G03G15/20

CPC分类号： G03G15/2064 ,  G03G2215/2016 ,  G03G2215/2019

摘要： In a fixing apparatus and an image forming apparatus of the present invention, an external heating section is provided that includes: an external heating belt; two heat rollers suspending the external heating belt and pressed against a fixing roller via the external heating belt; and a release/contact mechanism for causing the two heat rollers to separate from or contact with the fixing roller. With the heat rollers separated from the fixing roller by the release/contact mechanism, the external heating belt and the fixing roller are in contact with each other and the external heating belt follows rotation of the fixing roller. As a result, a fixing apparatus is provided that includes an external release/contact mechanism that can quickly operate in a small space and at low power without encouraging deterioration of the belt member. An image forming apparatus provided with such a fixing apparatus is also provided.

摘要翻译： 在本发明的定影装置和图像形成装置中，提供外部加热部，其包括：外部加热带; 两个热辊将外部加热带悬挂并经由外部加热带压靠在定影辊上; 以及用于使两个热辊与定影辊分离或与定影辊接触的释放/接触机构。 由于通过释放/接触机构与定影辊分离的热辊，外部加热带和定影辊彼此接触，并且外部加热带随着定影辊的旋转。 结果，提供一种定影装置，其包括外部释放/接触机构，其可以在小的空间和低功率下快速地操作，而不会促使带部件的劣化。 还提供了一种设置有这种定影装置的图像形成装置。

公开(公告)号：US20090245900A1

公开(公告)日：2009-10-01

申请号：US12412427

申请日：2009-03-27

申请人： Toshiaki Kagawa

发明人： Toshiaki Kagawa

IPC分类号： G03G15/20

CPC分类号： G03G15/2042 ,  G03G2215/2029 ,  G03G2215/2035 ,  G03G2215/2038

摘要： A planar heat-generating body 42 of a fixing apparatus of the present invention includes (i) a resistive heat-generating body 43a containing small heat-generating bodies electrically connected in parallel and aligned in a direction perpendicular to a direction in which a fixing belt 32 moves and (ii) a PTC element and a corresponding small heat-generating body being provided to be connected in series with a power source 36, the PTC element having a resistance value increasing at a predetermined temperature or higher. The PTC element 37 and the small heat-generating body are provided in an area corresponding to a non-sheet passing area of the fixing belt 32, the non-sheet passing area being an area where a smallest-size sheet does not pass, the smallest-size sheet being smallest among sheets that the fixing apparatus deals with. This allows for prevention of a temperature increase in the non-sheet passing area with a simple arrangement.

摘要翻译： 本发明的定影装置的平面发热体42包括：（i）电阻发热体43a，其包含小型的发热体，该发热体并联地电连接并且在垂直于定影带 32移动，并且（ii）PTC元件和相应的小型发热体被提供以与电源36串联连接，PTC元件具有在预定温度或更高温度下增加的电阻值。 PTC元件37和小型发热体设置在与定影带32的非片材通过区域对应的区域中，非片材通过区域是最小尺寸的片材不通过的区域， 最小尺寸的片材在定影装置处理的片材中最小。 这允许以简单的布置来防止非片材通过区域的温度升高。