公开(公告)号：US07203438B2

公开(公告)日：2007-04-10

申请号：US11038066

申请日：2005-01-21

申请人： Masahito Omata ,  Hisashi Nakahara ,  Yusuke Nakazono ,  Satoshi Nishida ,  Eiji Uekawa ,  Isamu Takeda ,  Noriyuki Ito

发明人： Masahito Omata ,  Hisashi Nakahara ,  Yusuke Nakazono ,  Satoshi Nishida ,  Eiji Uekawa ,  Isamu Takeda ,  Noriyuki Ito

IPC分类号： G03G15/20

CPC分类号： G03G15/2042 ,  H05B3/0095

摘要： Image heating apparatus capable of preventing an excessive temperature increase in a sheet non-passing area and heater for use in the image heating apparatus including: a substrate, a heat generating resistor formed on the substrate, and first and second electrodes for supplying an electric power to the heat generating resistor. Each of the first and second electrodes has a first area to contact a power supplying connector and a second area provided at an end portion electrically opposite to the first area along a longitudinal direction of the substrate, and the heat generating resistor is provided to electrically connect the second area of the first and second electrode so that when the heater is at a set temperature for an image heating operation a resistance value Rc of the second area, and a resistance value Rt between a portion within the second area of the first and second electrode and electrically closest to the first area satisfy a relation Rc/Rt

摘要翻译： 一种图像加热装置，其能够防止图像加热装置中使用的片材不通过区域和加热器的温度升高，包括：基板，形成在基板上的发热电阻器，以及用于提供电力的第一和第二电极 到发热电阻器。 第一电极和第二电极中的每一个具有接触供电连接器的第一区域和沿着基板的纵向方向设置在与第一区域电相对的端部处的第二区域，并且发热电阻器被设置为电连接 第一和第二电极的第二区域，使得当加热器处于图像加热操作的设定温度时，第二区域的电阻值Rc和第一和第二电极的第二区域内的部分之间的电阻值Rt 电极和最靠近第一区域的电极满足关系Rc / Rt <= 1/30。

公开(公告)号：US20050163523A1

公开(公告)日：2005-07-28

申请号：US11038066

申请日：2005-01-21

申请人： Masahito Omata ,  Hisashi Nakahara ,  Yusuke Nakazono ,  Satoshi Nishida ,  Eiji Uekawa ,  Isamu Takeda ,  Noriyuki Ito

发明人： Masahito Omata ,  Hisashi Nakahara ,  Yusuke Nakazono ,  Satoshi Nishida ,  Eiji Uekawa ,  Isamu Takeda ,  Noriyuki Ito

IPC分类号： G03G15/20 ,  H05B3/00 ,  H05B3/03 ,  H05B3/12

CPC分类号： G03G15/2042 ,  H05B3/0095

摘要： The invention is to provide an image heating apparatus capable of preventing an excessive temperature increase in a sheet non-passing area and a heater for use in such apparatus, and the heater for use in the image heating apparatus of the invention is constructed by including: a substrate; a heat generating resistor formed on the substrate; and first and second electrodes for supplying an electric power to the heat generating resistor; wherein each of the first and second electrodes has a first area to be contacted with a power supplying connector and a second area provided at an end portion electrically opposite to the first area, the second areas are provided along a longitudinal direction of the substrate, and the heat generating resistor is so provided as to electrically connect the second area of the first electrode and the second area of the second electrode; wherein, within the second area of the first electrode, a portion electrically closest to the first area of the first electrode is provided in the vicinity of an end portion of the substrate in the longitudinal direction thereof, and within the second area of the second electrode, a portion electrically closest to the first area of the second electrode is provided in the vicinity of the other end portion of the substrate in the longitudinal direction thereof; and wherein, when the heater is at a set temperature for an image heating operation in the image heating apparatus, a resistance value Rc of the second area of either of the first and second electrodes and a resistance value Rt between a portion within the second area of the first electrode electrically closest to the first area of the first electrode and a portion within the second area of the second electrode electrically closest to the first area of the second electrode satisfy a relation: Rc/Rt≦1/30.

公开(公告)号：US20120020709A1

公开(公告)日：2012-01-26

申请号：US13186546

申请日：2011-07-20

申请人： Koji Uchiyama ,  Hisashi Nakahara ,  Yutaka Sato

发明人： Koji Uchiyama ,  Hisashi Nakahara ,  Yutaka Sato

IPC分类号： G03G15/20

CPC分类号： G03G15/206 ,  G03G15/2057

摘要： An image heating device for heating a toner image while nip-conveying a recording material, in a nip, on which the toner image is carried, includes a heating member; and a pressing roller, including an elastic layer, for forming the nip in contact with the heating member. The elastic layer of the pressing roller includes a thermosetting silicon rubber containing a thermal conductive filler. The thermosetting silicon rubber includes pore portions formed with resin microballoons and a pore connecting portion for connecting the pore portions. The elastic layer has a thermal conductivity of 0.15 W/mK to 0.5 W/mK.

摘要翻译： 一种图像加热装置，用于加热调色剂图像，同时在其上承载有调色剂图像的辊隙中夹持记录材料，包括加热构件; 以及包括弹性层的加压辊，用于形成与加热构件接触的辊隙。 加压辊的弹性层包括含有导热填料的热固性硅橡胶。 热固性硅橡胶包括由树脂微球形成的孔部分和用于连接孔部分的孔连接部分。 弹性层的导热率为0.15W / mK〜0.5W / mK。

公开(公告)号：US07031641B2

公开(公告)日：2006-04-18

申请号：US10835303

申请日：2004-04-28

申请人： Hisashi Nakahara ,  Yasunori Chigono ,  Yasuhiro Nakata

发明人： Hisashi Nakahara ,  Yasunori Chigono ,  Yasuhiro Nakata

IPC分类号： G03G21/00 ,  G03G15/24

CPC分类号： G03G15/0225 ,  G03G2221/0005

摘要： An image-forming apparatus includes a pre-charge exposure device which removes electric charge from a photoconductor drum to increase a potential contrast between the surface of the photoconductor drum and the surface of a charge roller in an upstream region of a nip region between the photoconductor drum and the charge roller in the rotating direction of the photoconductor drum, so that toner accumulating in an upstream region of the nip region in the rotating direction of the photoconductor drum is restrained and prevented from being discharged onto an image-forming region. When the toner accumulating in the upstream region of the nip region in the rotating direction of the photoconductor drum is to be discharged onto a non-image-forming region, the pre-charge exposure device is turned off so that the potential contrast decreases.

摘要翻译： 图像形成装置包括预充电曝光装置，其从感光鼓移除电荷，以增加感光鼓的表面与感光鼓之间的压区的上游区域中的充电辊的表面之间的潜在对比度 鼓和充电辊在感光鼓的旋转方向上，使得在感光鼓的旋转方向上积聚在夹持区域的上游区域中的调色剂被抑制并防止被排出到图像形成区域。 当在感光鼓的旋转方向上积聚在夹持区域的上游区域中的调色剂被排出到非图像形成区域时，预充电曝光装置被关闭，使得电位对比度降低。

公开(公告)号：US06424814B1

公开(公告)日：2002-07-23

申请号：US09789637

申请日：2001-02-22

申请人： Yasumasa Otsuka ,  Daizo Fukuzawa ,  Hisashi Nakahara

发明人： Yasumasa Otsuka ,  Daizo Fukuzawa ,  Hisashi Nakahara

IPC分类号： G03G1516

摘要： An image forming apparatus is disclosed in which a specific toner is used, and a transferring means has a transfer roller which is in contact with the surface of an electrostatic image bearing member and rotates when the electrostatic image bearing member rotates. The toner is comprised of particles which have a weight average particle diameter of 4 to 12 &mgr;m, and in a circularity distribution for particles 3 &mgr;m or more in circle-equivalent diameter which are included in the toner, particles having a circularity of 0.90 or more account for 90% by number or more.

公开(公告)号：US20110236090A1

公开(公告)日：2011-09-29

申请号：US13070948

申请日：2011-03-24

申请人： Koji Uchiyama ,  Takahiro Uchiyama ,  Hisashi Nakahara

发明人： Koji Uchiyama ,  Takahiro Uchiyama ,  Hisashi Nakahara

IPC分类号： G03G15/20

CPC分类号： G03G15/2053 ,  G03G2215/2035

摘要： A fixing device for fixing on a recording material a toner image formed on the recording material includes a flexible sleeve including a resinous base layer, a parting layer and an adhesive layer for bonding the base layer and the parting layer; a heater contacted to an inner surface of the sleeve; a pressing member for forming a nip, in which the recording material on which the toner image has been formed is nipped and conveyed, between itself and the sleeve to which the heater is contacted; a voltage applying member for applying a voltage, of a polarity identical to a polarity of toner; and a grounding member, contactable to the recording material in a nipped state in the nip, for grounding the recording material. In a thickness direction of the layers, an electric resistance of the adhesive layer is larger than that of the parting layer and the electric resistance of the parting layer is larger than that of the base layer. The voltage applying member applies the voltage to the sleeve in contact with the base layer.

摘要翻译： 用于固定在记录材料上的调色剂图像形成在记录材料上的调色剂图像包括具有树脂基层，分型层和用于粘接基层和分型层的粘合层的柔性套筒; 与套筒的内表面接触的加热器; 用于形成辊隙的按压构件，其中已经形成有调色剂图像的记录材料在其与加热器接触的套筒之间被夹持和传送; 用于施加极性与调色剂的极性相同的电压的施加电压部件; 以及接地构件，其能够在夹持部中以夹持状态与记录材料接触，用于使记录材料接地。 在层的厚度方向上，粘合剂层的电阻大于分离层的电阻，分离层的电阻大于基底层的电阻。 电压施加部件将电压施加到与基底层接触的套筒。

公开(公告)号：US20100028062A1

公开(公告)日：2010-02-04

申请号：US12512946

申请日：2009-07-30

申请人： Hisashi Nakahara ,  Goichi Kitadai ,  Yoshihiro Matsuo ,  Yoji Tomoyuki ,  Takahiro Uchiyama ,  Koji Uchiyama

发明人： Hisashi Nakahara ,  Goichi Kitadai ,  Yoshihiro Matsuo ,  Yoji Tomoyuki ,  Takahiro Uchiyama ,  Koji Uchiyama

IPC分类号： G03G15/20

CPC分类号： G03G15/2064 ,  G03G2215/2035

摘要： The present invention relates to an image heating apparatus in which a nip portion is formed by a heating unit, which includes a flexible sleeve and a heater, and a pressure roller. The position of the heating unit is appropriately maintained by pressing the heating unit against the pressure roller using a pressure member so that the heating unit can contact two or more portions of a downstream side rim of a groove arranged on a frame that holds the heating unit, even when the pressure roller is rotated.

摘要翻译： 本发明涉及一种图像加热装置，其中夹持部由包括柔性套管和加热器的加热单元以及加压辊形成。 加热单元的位置适当地通过使用加压构件将加热单元压靠压力辊来保持，使得加热单元可以接触布置在保持加热单元的框架上的凹槽的下游侧边缘的两个或更多个部分 即使当压力辊旋转时。

公开(公告)号：US09110416B2

公开(公告)日：2015-08-18

申请号：US13186546

申请日：2011-07-20

申请人： Koji Uchiyama ,  Hisashi Nakahara ,  Yutaka Sato

发明人： Koji Uchiyama ,  Hisashi Nakahara ,  Yutaka Sato

IPC分类号： G03G15/20

CPC分类号： G03G15/206 ,  G03G15/2057

摘要： An image heating device for heating a toner image while nip-conveying a recording material, in a nip, on which the toner image is carried, includes a heating member; and a pressing roller, including an elastic layer, for forming the nip in contact with the heating member. The elastic layer of the pressing roller includes a thermosetting silicon rubber containing a thermal conductive filler. The thermosetting silicon rubber includes pore portions formed with resin microballoons and a pore connecting portion for connecting the pore portions. The elastic layer has a thermal conductivity of 0.15 W/mK to 0.5 W/mK.

摘要翻译： 一种图像加热装置，用于加热调色剂图像，同时在其上承载有调色剂图像的辊隙中夹持记录材料，包括加热构件; 以及包括弹性层的加压辊，用于形成与加热构件接触的辊隙。 加压辊的弹性层包括含有导热填料的热固性硅橡胶。 热固性硅橡胶包括由树脂微球形成的孔部分和用于连接孔部分的孔连接部分。 弹性层的导热率为0.15W / mK〜0.5W / mK。

公开(公告)号：US20120294641A1

公开(公告)日：2012-11-22

申请号：US13471927

申请日：2012-05-15

申请人： Hisashi Nakahara ,  Kentaro Yamashita

发明人： Hisashi Nakahara ,  Kentaro Yamashita

IPC分类号： G03G15/20

CPC分类号： G03G15/205 ,  H05B3/0095 ,  H05B3/141 ,  H05B2203/013

摘要： An image heating apparatus for heating a toner image in a nip while conveying a recording material on which the toner image is held is provided. The image heating apparatus includes a heater for generating heat by being supplied with electric power from an AC power source; a rotatable heating member for being heated by the heater; a pressing member for forming the nip in contact to the rotatable heating member; a temperature detecting portion for detecting a temperature of the heater or the rotatable heating member; and a controller for setting the electric power supplied to the heater every renewal cycle depending on a detected temperature by the temperature detecting portion. The renewal cycle is shorter in a rise period of the heater than in a period in which the recording material is conveyed in the nip.

摘要翻译： 提供一种图像加热装置，用于在传送保持调色剂图像的记录材料的同时加热辊隙中的调色剂图像。 图像加热装置包括：加热器，用于通过从交流电源供给电力产生热量; 用于被加热器加热的可旋转加热构件; 用于形成与所述可旋转加热构件接触的压区的按压构件; 用于检测加热器或可旋转加热构件的温度的温度检测部分; 以及控制器，用于根据所述温度检测部分的检测温度来设置供应给所述加热器的电力。 加热器的上升期间的更新周期比在辊隙中记录材料输送的期间短。

公开(公告)号：US20120183336A1

公开(公告)日：2012-07-19

申请号：US13429006

申请日：2012-03-23

申请人： Hisashi Nakahara ,  Goichi Kitadai ,  Yoshihiro Matsuo ,  Yoji Tomoyuki ,  Takahiro Uchiyama ,  Koji Uchiyama

发明人： Hisashi Nakahara ,  Goichi Kitadai ,  Yoshihiro Matsuo ,  Yoji Tomoyuki ,  Takahiro Uchiyama ,  Koji Uchiyama

IPC分类号： G03G15/20

CPC分类号： G03G15/2064 ,  G03G2215/2035

摘要： The present invention relates to an image heating apparatus in which a nip portion is formed by a heating unit, which includes a flexible sleeve and a heater, and a pressure roller. The position of the heating unit is appropriately maintained by pressing the heating unit against the pressure roller using a pressure member so that the heating unit can contact two or more portions of a downstream side rim of a groove arranged on a frame that holds the heating unit, even when the pressure roller is rotated.

摘要翻译： 本发明涉及一种图像加热装置，其中夹持部由包括柔性套管和加热器的加热单元以及加压辊形成。 加热单元的位置适当地通过使用加压构件将加热单元压靠压力辊来保持，使得加热单元可以接触布置在保持加热单元的框架上的凹槽的下游侧边缘的两个或更多个部分 即使当压力辊旋转时。