公开(公告)号：US20180329342A1

公开(公告)日：2018-11-15

申请号：US15970819

申请日：2018-05-03

申请人： Takuya Seshita ,  Kohichi Utsunomiya ,  Hajime Gotoh ,  Takahiro Imada ,  Yutaka Ikebuchi

发明人： Takuya Seshita ,  Kohichi Utsunomiya ,  Hajime Gotoh ,  Takahiro Imada ,  Yutaka Ikebuchi

IPC分类号： G03G15/20

CPC分类号： G03G15/205 ,  G03G15/1615 ,  G03G15/2025 ,  G03G15/2053 ,  G03G15/206 ,  G03G15/2064 ,  G03G2215/2035

摘要： A fixing device includes a driving unit, a pressing roller, a heater, a fixing belt, a pressing roller, a nip formation pad that presses against an inner surface of the fixing belt toward the pressing roller via the fixing belt to form a nip, a separation mechanism, a lubricant between the fixing belt and the nip formation pad, and a processor to execute a warming-up operation of the fixing device. In the warming-up operation, before the heater heats the fixing belt, the separation mechanism moves the nip formation pad in a direction of separating the nip formation pad from the pressing roller to set a nip pressure lower than an ordinary nip pressure, and the driving unit rotates the pressing roller that rotates the fixing belt. Thereafter, the heater starts heating, and the separation mechanism moves the nip formation pad to contact the fixing belt at an ordinary nip pressure.

公开(公告)号：US09817345B2

公开(公告)日：2017-11-14

申请号：US15352782

申请日：2016-11-16

申请人： Motoyoshi Yamano ,  Tetsuo Tokuda ,  Yoshikuni Sasaki ,  Hiroshi Ono ,  Hironori Yamaoka ,  Ryohhei Sugiyama ,  Kohichi Utsunomiya ,  Arinobu Yoshiura ,  Hideo Nagafuji

发明人： Motoyoshi Yamano ,  Tetsuo Tokuda ,  Yoshikuni Sasaki ,  Hiroshi Ono ,  Hironori Yamaoka ,  Ryohhei Sugiyama ,  Kohichi Utsunomiya ,  Arinobu Yoshiura ,  Hideo Nagafuji

IPC分类号： G03G15/20

CPC分类号： G03G15/2039 ,  G03G15/2032 ,  G03G15/2064

摘要： A fixing device includes a heater, a fixing rotator, a pressure rotator to press against the fixing rotator to form a fixing nip between the fixing rotator and the pressure rotator, through which a recording medium is conveyed, a moving device to move the pressure rotator in directions in which the pressure rotator comes into contact with and separates from the fixing rotator, a thermal expansion amount predictor to predict an amount of thermal expansion of the fixing rotator while the recording medium is conveyed, and a nip width adjuster to control a moving distance of the pressure rotator moved by the moving device toward the fixing rotator, depending on the amount of thermal expansion of the fixing rotator predicted by the thermal expansion amount predictor, so as to adjust a width of the fixing nip to maintain a substantially constant width of the fixing nip.

公开(公告)号：US09650219B2

公开(公告)日：2017-05-16

申请号：US15013272

申请日：2016-02-02

申请人： Arinobu Yoshiura ,  Hideo Nagafuji ,  Yuji Arai ,  Kohichi Utsunomiya ,  Kiho Sai ,  Shohei Saito ,  Yutaka Ikebuchi ,  Motoyoshi Yamano

发明人： Arinobu Yoshiura ,  Hideo Nagafuji ,  Yuji Arai ,  Kohichi Utsunomiya ,  Kiho Sai ,  Shohei Saito ,  Yutaka Ikebuchi ,  Motoyoshi Yamano

IPC分类号： B65H5/38 ,  B65H29/52 ,  B65H5/06 ,  G03G15/00 ,  G03G15/20

CPC分类号： B65H5/062 ,  B65H5/38 ,  B65H29/52 ,  B65H2402/31 ,  B65H2404/611 ,  B65H2404/693 ,  B65H2601/11 ,  G03G15/2028 ,  G03G15/6529 ,  G03G15/6573 ,  G03G2215/00675 ,  G03G2215/00679

摘要： A paper conveying device includes a conveying guide, a bearing, a conveying-guide facing surface, and a separation restrictor. The conveying guide includes a conveyance surface for conveying paper and a pivot shaft and is swingable about the pivot shaft. The bearing includes a support surface facing at least an upper semiperimeter of the pivot shaft. The conveying-guide facing surface is provided to face an end of the conveying guide when the conveying guide swings. The end is opposite to the conveyance surface. The separation restrictor is provided to the conveying guide to restrict separation of the pivot shaft from the bearing at least in a given swing range of the conveying guide by contacting the conveying-guide facing surface.

公开(公告)号：US20170131664A1

公开(公告)日：2017-05-11

申请号：US15295275

申请日：2016-10-17

申请人： Kohichi UTSUNOMIYA ,  Hideo NAGAFUJI ,  Arinobu YOSHIURA ,  Yutaka IKEBUCHI ,  Motoyoshi YAMANO

发明人： Kohichi UTSUNOMIYA ,  Hideo NAGAFUJI ,  Arinobu YOSHIURA ,  Yutaka IKEBUCHI ,  Motoyoshi YAMANO

IPC分类号： G03G15/20

CPC分类号： G03G15/2025 ,  G03G15/2053 ,  G03G2215/2035

摘要： A fixing device includes a fixing rotator that is endless and rotatable in a rotation direction and a heater to heat the fixing rotator. A pressure rotator contacts an outer circumferential surface of the fixing rotator. A nip formation pad presses against the pressure rotator via the fixing rotator to form a fixing nip between the fixing rotator and the pressure rotator. The nip formation pad includes an upstream portion disposed upstream from the fixing nip in the rotation direction of the fixing rotator. A recess is disposed in the upstream portion of the nip formation pad. A friction reducer is sandwiched between the nip formation pad and the fixing rotator and bears a lubricant.

公开(公告)号：US09494900B2

公开(公告)日：2016-11-15

申请号：US14790297

申请日：2015-07-02

申请人： Kohichi Utsunomiya ,  Hideo Nagafuji ,  Yuji Arai ,  Arinobu Yoshiura ,  Qifeng Cui ,  Shohei Saito ,  Yutaka Ikebuchi ,  Motoyoshi Yamano

发明人： Kohichi Utsunomiya ,  Hideo Nagafuji ,  Yuji Arai ,  Arinobu Yoshiura ,  Qifeng Cui ,  Shohei Saito ,  Yutaka Ikebuchi ,  Motoyoshi Yamano

IPC分类号： G03G15/20

CPC分类号： G03G15/2053 ,  G03G15/2042 ,  G03G15/206 ,  G03G15/2064 ,  G03G2215/2035

摘要： A device includes a fixing belt, a holder that holds the fixing belt, a pressing member that comes in contact with the fixing belt, a nip-forming-member arranged inside the fixing belt, that forms a nip by coming in contact with the pressing member, a supporting member that supports the nip-forming-member, a side plate to which the nip-forming-member and the supporting member are fixed, and a pressing mechanism that presses a pressing roller to the nip-forming-member via the fixing belt. The supporting member includes at least two plates. The two plates are separated from each other near a contact portion where the plates come in contact with the nip-forming-member. At least a part of each of the plates is a flat surface parallel to a direction of a load applied by the pressing mechanism. Portions of the two plates on a side distant from the contact portion are joined together.

摘要翻译： 一种装置包括定影带，固定定影带的保持器，与定影带接触的按压构件，布置在定影带内部的夹持形成构件，其与压紧件接触形成辊隙 构件，支撑夹持形成构件的支撑构件，夹持形成构件和支撑构件被固定的侧板;以及按压机构，其通过该夹持构件与压区成形构件 定影带 支撑构件包括至少两个板。 两个板在接触部分附近彼此分开，其中板与辊隙形成部件接触。 每个板的至少一部分是平行于由按压机构施加的负载方向的平坦表面。 两个板的远离接触部分的一部分接合在一起。

公开(公告)号：US09429888B2

公开(公告)日：2016-08-30

申请号：US14792870

申请日：2015-07-07

申请人： Kohichi Utsunomiya ,  Hideo Nagafuji ,  Yuji Arai ,  Arinobu Yoshiura ,  Kiho Sai ,  Shohei Saito ,  Yutaka Ikebuchi ,  Motoyoshi Yamano

发明人： Kohichi Utsunomiya ,  Hideo Nagafuji ,  Yuji Arai ,  Arinobu Yoshiura ,  Kiho Sai ,  Shohei Saito ,  Yutaka Ikebuchi ,  Motoyoshi Yamano

IPC分类号： G03G15/20

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

摘要： A fixing device includes an endless fixing belt: a fixing belt holding member; a pressure member that makes a contact with the circumference of the fixing belt; a nip forming member that is disposed inside the fixing belt and forms a nip between the nip forming member and the pressure member; a nip supporting member that is made of a sheet metal; a side plate that supports the fixing belt holding member and the nip supporting member; and a pressure mechanism that presses the pressure member against the nip forming member with the fixing belt between the pressure member and the nip forming member. Both end surfaces of the nip supporting member are shear surfaces and one of the shear surfaces makes a contact with the nip forming member and the other shear surface is supported by the side plate.

摘要翻译： 固定装置包括环形定影带：定影带保持构件; 与所述定影带的圆周接触的压力构件; 辊隙形成构件，其设置在所述定影带的内部并在所述辊隙形成构件和所述压力构件之间形成辊隙; 由金属板制成的辊隙支撑构件; 支撑定影带保持构件和夹持支撑构件的侧板; 以及压力机构，其通过所述压力构件和所述辊隙形成构件之间的所述定影带将所述压力构件压靠在所述辊隙形成构件上。 夹持支撑构件的两个端面是剪切面，其中一个剪切面与夹持形成构件接触，另一个剪切面由侧板支撑。

公开(公告)号：US09316977B2

公开(公告)日：2016-04-19

申请号：US14204268

申请日：2014-03-11

申请人： Motoyoshi Yamano ,  Tetsuo Tokuda ,  Takashi Sakamaki ,  Naoto Suzuki ,  Satoshi Ueno ,  Kohichi Utsunomiya ,  Fumihiro Hirose

发明人： Motoyoshi Yamano ,  Tetsuo Tokuda ,  Takashi Sakamaki ,  Naoto Suzuki ,  Satoshi Ueno ,  Kohichi Utsunomiya ,  Fumihiro Hirose

IPC分类号： G03G15/20

CPC分类号： G03G15/2057 ,  G03G15/2017 ,  G03G15/2039 ,  G03G15/2053

摘要： A fixing device includes an exciting coil to generate a magnetic flux and a heat generation layer disposed opposite the exciting coil to generate heat by the magnetic flux from the exciting coil. A temperature sensitive magnetic body, disposed opposite the exciting coil via the heat generation layer, obtains and loses magnetism at a temperature defined by a Curie temperature by composition adjustment to selectively create a heating region and a non-heating region of the heat generation layer. A degausser is made of a non-magnetic material having an electrical resistivity smaller than an electrical resistivity of the temperature sensitive magnetic body. The degausser is disposed opposite the exciting coil with an interval in a range of from about 4.2 mm to about 8.2 mm.

摘要翻译： 定影装置包括产生磁通量的励磁线圈和与励磁线圈相对设置的发热层，以通过来自励磁线圈的磁通产生热量。 通过发热层与励磁线圈相对设置的温度敏感磁体通过组成调整在由居里温度限定的温度下获得并失去磁性，以选择性地产生发热层的加热区域和非加热区域。 减阻器由电阻率小于感温磁体的电阻率的非磁性材料制成。 减速器与励磁线圈相对设置，间隔范围为约4.2mm至约8.2mm。

公开(公告)号：US10248055B2

公开(公告)日：2019-04-02

申请号：US16006677

申请日：2018-06-12

申请人： Yutaka Ikebuchi ,  Takuya Seshita ,  Yasuharu Kawarasaki ,  Kohichi Utsunomiya

发明人： Yutaka Ikebuchi ,  Takuya Seshita ,  Yasuharu Kawarasaki ,  Kohichi Utsunomiya

IPC分类号： G03G15/20

摘要： A fixing device is provided that includes a fixing belt rotatable in a predetermined direction, a heater to heat the fixing belt, a pressure rotator in contact with an outer circumferential surface of the fixing belt, a nip formation pad disposed inside a loop formed by the fixing belt and pressed against the pressure rotator via the fixing belt to form a fixing nip, and a pair of guides in contact with an inner circumferential surface of the fixing belt at both ends of the fixing belt in a width direction thereof, to maintain a substantially cylindrical posture of the fixing belt. Each of the guides includes a guide portion in contact with the inner circumferential surface of the fixing belt and a lubricant holder holding a lubricant that is disposed adjacent to the guide portion and not in contact with the inner circumferential surface of the fixing belt.

公开(公告)号：US20180373187A1

公开(公告)日：2018-12-27

申请号：US16006677

申请日：2018-06-12

申请人： Yutaka Ikebuchi ,  Takuya Seshita ,  Yasuharu Kawarasaki ,  Kohichi Utsunomiya

发明人： Yutaka Ikebuchi ,  Takuya Seshita ,  Yasuharu Kawarasaki ,  Kohichi Utsunomiya

IPC分类号： G03G15/20

摘要： A fixing device is provided that includes a fixing belt rotatable in a predetermined direction, a heater to heat the fixing belt, a pressure rotator in contact with an outer circumferential surface of the fixing belt, a nip formation pad disposed inside a loop formed by the fixing belt and pressed against the pressure rotator via the fixing belt to form a fixing nip, and a pair of guides in contact with an inner circumferential surface of the fixing belt at both ends of the fixing belt in a width direction thereof, to maintain a substantially cylindrical posture of the fixing belt. Each of the guides includes a guide portion in contact with the inner circumferential surface of the fixing belt and a lubricant holder holding a lubricant that is disposed adjacent to the guide portion and not in contact with the inner circumferential surface of the fixing belt.

公开(公告)号：US09477182B2

公开(公告)日：2016-10-25

申请号：US14806558

申请日：2015-07-22

申请人： Yutaka Ikebuchi ,  Hideo Nagafuji ,  Yuji Arai ,  Kohichi Utsunomiya ,  Arinobu Yoshiura ,  Kiho Sai ,  Motoyoshi Yamano ,  Shohei Saito

发明人： Yutaka Ikebuchi ,  Hideo Nagafuji ,  Yuji Arai ,  Kohichi Utsunomiya ,  Arinobu Yoshiura ,  Kiho Sai ,  Motoyoshi Yamano ,  Shohei Saito

IPC分类号： G03G15/20

CPC分类号： G03G15/2017 ,  G03G15/2042

摘要： A fixing device includes: a fixing member; an opposing member that provides a fixing nip with the fixing member; a heating unit that heats the fixing member; a heating area changing member that moves to change a heating area of the fixing member heated by the heating unit; and a position detection sensor that detects a position of the heating area changing member. The fixing device controls a stop position of the heating area changing member based on detection by the position detection sensor. The single position detection sensor detects the position of the heating area changing member both when the heating area changing member is moving from a preset reference position to an arbitrary position and when the heating area changing member is moving back from an arbitrary position to the reference position.

摘要翻译： 定影装置包括：固定构件; 与所述固定构件提供定影辊隙的相对构件; 加热单元，其加热固定构件; 加热区域改变构件，其移动以改变由所述加热单元加热的所述固定构件的加热区域; 以及位置检测传感器，其检测所述加热区域改变构件的位置。 定影装置基于位置检测传感器的检测来控制加热区域改变构件的停止位置。 单个位置检测传感器在加热区域改变构件从预设基准位置移动到任意位置时检测加热区域改变构件的位置，并且当加热区域改变构件从任意位置移动到参考位置时 。