公开(公告)号：US20190094764A1

公开(公告)日：2019-03-28

申请号：US16185091

申请日：2018-11-09

申请人： Yasunori ISHIGAYA ,  Kazuya SAITO ,  Keitaro SHOJI ,  Toshihiko SHIMOKAWA ,  Hiromasa TAKAGI

发明人： Yasunori ISHIGAYA ,  Kazuya SAITO ,  Keitaro SHOJI ,  Toshihiko SHIMOKAWA ,  Hiromasa TAKAGI

IPC分类号： G03G15/20

摘要： A fixing device includes a fixing rotator being rotatable and a heater to heat the fixing rotator. The heater includes a tube, a heat generator, disposed inside the tube, to generate heat, and a sealing portion, disposed at each lateral end of the tube in a longitudinal direction of the heater, to seal the tube. A reflector reflects heat radiated from the heater toward the fixing rotator. The reflector includes an outboard edge being disposed inboard from at least a part of the sealing portion in an axial direction of the fixing rotator.

公开(公告)号：US20160378033A1

公开(公告)日：2016-12-29

申请号：US15160374

申请日：2016-05-20

申请人： Yasunori ISHIGAYA ,  Yutaka IKEBUCHI ,  Kazuya SAITO ,  Keitaro SHOJI ,  Ryohei MATSUDA ,  Hiromasa TAKAGI ,  Ryuuichi MIMBU ,  Toshihiko SHIMOKAWA

发明人： Yasunori ISHIGAYA ,  Yutaka IKEBUCHI ,  Kazuya SAITO ,  Keitaro SHOJI ,  Ryohei MATSUDA ,  Hiromasa TAKAGI ,  Ryuuichi MIMBU ,  Toshihiko SHIMOKAWA

IPC分类号： G03G15/20

CPC分类号： G03G15/206 ,  G03G2215/0132 ,  G03G2215/2035

摘要： A fixing device includes a rotatable endless belt formed into a loop and a heater disposed opposite the endless belt to heat the endless belt. A nip formation pad is disposed inside the loop formed by the endless belt. The nip formation pad includes a metallic thermal equalizer extending in an axial direction of the endless belt. A rotatable pressure rotator presses against the nip formation pad via the endless belt to form a fixing nip between the endless belt and the pressure rotator, through which a recording medium bearing a toner image is conveyed. The pressure rotator includes an increased tackiness portion disposed at a lateral end of the pressure rotator in an axial direction of the pressure rotator to transmit a driving force to the endless belt. The increased tackiness portion is disposed opposite the thermal equalizer of the nip formation pad.

摘要翻译： 定影装置包括形成环的可旋转环形带和与环形带相对设置的加热环形带的加热器。 辊隙形成垫设置在由环形带形成的环内。 压区形成垫包括在环形带的轴向方向上延伸的金属热均衡器。 可旋转的压力旋转器通过环形带压靠在辊隙形成垫上，以在环形带和压力旋转器之间形成定影辊隙，通过该固定辊隙，承载有调色剂图像的记录介质。 压力旋转器包括在压力旋转器的轴向方向上设置在压力转子的侧端处的增加的粘性部分，以将驱动力传递到环形带。 增加的粘性部分设置成与辊隙形成垫的热均衡器相对。

公开(公告)号：US20170255149A1

公开(公告)日：2017-09-07

申请号：US15433667

申请日：2017-02-15

申请人： Hiromasa TAKAGI ,  Yasunori ISHIGAYA ,  Kazuya SAITO ,  Toshihiko SHIMOKAWA ,  Keitaro SHOJI

发明人： Hiromasa TAKAGI ,  Yasunori ISHIGAYA ,  Kazuya SAITO ,  Toshihiko SHIMOKAWA ,  Keitaro SHOJI

IPC分类号： G03G15/20

CPC分类号： G03G15/2053 ,  G03G2215/0132 ,  G03G2215/2035

摘要： A nip-forming member includes: a first nip-forming member configured to be a main body of the nip-forming member; and a second nip-forming member disposed on a surface of the first nip-forming member, the surface facing the inner circumferential surface, the second nip-forming member extending in a direction orthogonal to a rotating direction of the fixing belt. Both ends of the second nip-forming member on an upstream side and a downstream side of the rotating direction are bent in a direction away from the nipping part, in order to create a pair of side-wall portions, so that the second nip-forming member has a concave cross-section for accommodating the first nip-forming member. The second nip-forming member has a restraining portion at a position located on the side-wall portion created on the upstream side, the restraining portion being configured to restrain the first nip-forming member not to be detached from the concave cross-section.

公开(公告)号：US20170205742A1

公开(公告)日：2017-07-20

申请号：US15395410

申请日：2016-12-30

申请人： Keitaro SHOJI ,  Yasunori ISHIGAYA ,  Kazuya SAITO ,  Ryohei MATSUDA ,  Hiromasa TAKAGI ,  Ryuuichi MIMBU ,  Toshihiko SHIMOKAWA

发明人： Keitaro SHOJI ,  Yasunori ISHIGAYA ,  Kazuya SAITO ,  Ryohei MATSUDA ,  Hiromasa TAKAGI ,  Ryuuichi MIMBU ,  Toshihiko SHIMOKAWA

IPC分类号： G03G15/20

CPC分类号： G03G15/2039 ,  G03G15/2053

摘要： A fixing device includes an endless fixing belt that is multilayered, an opposing rotator disposed opposite the fixing belt and pressed to the fixing belt to form a nip, a heater disposed inside the fixing belt, and a safety device including a contactless temperature sensor disposed outside the fixing belt and apart from an outer face of the fixing. The fixing belt is to rotate and thermally expand. The contactless temperature sensor detects a temperature of the fixing belt. The safety device stops heating by the heater when the temperature detected by the contactless temperature sensor is at or higher than a predetermined temperature. As the outer face of the fixing belt shifts outward in the radial direction due to thermal, a proportion of the outer face of the fixing belt in a viewing angle of the contactless temperature sensor increases.

公开(公告)号：US20170248879A1

公开(公告)日：2017-08-31

申请号：US15410179

申请日：2017-01-19

申请人： Yasunori ISHIGAYA ,  Kazuya SAITO ,  Keitaro SHOJI ,  Toshihiko SHIMOKAWA ,  Hiromasa TAKAGI

发明人： Yasunori ISHIGAYA ,  Kazuya SAITO ,  Keitaro SHOJI ,  Toshihiko SHIMOKAWA ,  Hiromasa TAKAGI

IPC分类号： G03G15/20

CPC分类号： G03G15/2007 ,  G03G15/2042 ,  G03G15/2053

摘要： A fixing device includes a fixing rotator being rotatable and a heater to heat the fixing rotator. The heater includes a tube, a heat generator, disposed inside the tube, to generate heat, and a sealing portion, disposed at each lateral end of the tube in a longitudinal direction of the heater, to seal the tube. The sealing portion includes an inboard edge. A reflector reflects heat radiated from the heater toward the fixing rotator. The reflector includes an outboard edge being disposed inboard from the inboard edge of the sealing portion in an axial direction of the fixing rotator.

公开(公告)号：US20170212457A1

公开(公告)日：2017-07-27

申请号：US15401668

申请日：2017-01-09

申请人： Yasunori ISHIGAYA ,  Ryuuichi MIMBU ,  Hiromasa TAKAGI ,  Toshihiko SHIMOKAWA ,  Kazuya SAITO ,  Keitaro SHOJI

发明人： Yasunori ISHIGAYA ,  Ryuuichi MIMBU ,  Hiromasa TAKAGI ,  Toshihiko SHIMOKAWA ,  Kazuya SAITO ,  Keitaro SHOJI

IPC分类号： G03G15/20

CPC分类号： G03G15/2039 ,  G03G2215/2035

摘要： An image forming apparatus includes a fixing device to fix a toner image onto a recording medium, a voltmeter to measure an input voltage from an external source, and a controller operatively connected to the fixing device and the voltmeter. The fixing device includes an endless, fixing rotator formed into a loop, a heater to heat the fixing rotator, a pressure pad disposed inside the loop, and a pressure rotator disposed opposite the pressure pad via the fixing rotator to press the fixing rotator against the pressure pad to form a fixing nip between the fixing rotator and the pressure rotator, through which the recording medium bearing the toner image is conveyed. The controller controls a heating operation of the heater and a fixing operation of the fixing device to fix the toner image onto the recording medium, based on the input voltage measured by the voltmeter.

公开(公告)号：US20160274516A1

公开(公告)日：2016-09-22

申请号：US15070735

申请日：2016-03-15

申请人： Yoshiki YAMAGUCHI ,  Yoshio HATTORI ,  Haruyuki HONDA ,  Ryuuichi MIMBU ,  Toshihiko SHIMOKAWA ,  Yutaka IKEBUCHI ,  Yasunori ISHIGAYA ,  Kazuya SAITO ,  Keitaro SHOJI ,  Ryohei MATSUDA

发明人： Yoshiki YAMAGUCHI ,  Yoshio HATTORI ,  Haruyuki HONDA ,  Ryuuichi MIMBU ,  Toshihiko SHIMOKAWA ,  Yutaka IKEBUCHI ,  Yasunori ISHIGAYA ,  Kazuya SAITO ,  Keitaro SHOJI ,  Ryohei MATSUDA

IPC分类号： G03G15/20

CPC分类号： G03G15/2053 ,  G03G15/2028 ,  G03G15/6573 ,  G03G2215/00421 ,  G03G2215/2035

摘要： A fixing device includes an endless fixing belt; a pressure roller to contact the fixing belt; a nip forming member to press the pressure roller from the fixing belt; a nip portion formed between the fixing belt and the pressure roller; a heater to heat the fixing belt to fuse and fix toner onto a recording sheet in the nip portion; an auxiliary driven roller; an auxiliary drive roller to drive the driven roller; an auxiliary nip portion, formed between an outer circumferential surface of the auxiliary driven roller and an outer circumferential surface of the auxiliary drive roller, to nip the recording sheet after toner fixation conveyed from the nip portion; and an outlet guide member, disposed downstream of the auxiliary nip portion, to guide the recording sheet after toner fixation conveyed from the auxiliary nip portion, with the toner-fixed recording sheet surface bent in a concave shape.

摘要翻译： 定影装置包括环形定影带; 与所述定影带接触的压力辊; 夹持形成构件，用于从定影带按压压力辊; 形成在所述定影带和所述加压辊之间的辊隙部; 加热器，用于加热定影带以将调色剂熔合并固定到辊隙部分中的记录片材上; 辅助从动辊; 用于驱动从动辊的辅助驱动辊; 形成在辅助从动辊的外周表面和辅助驱动辊的外圆周表面之间的辅助夹持部分，用于在从夹持部分输送的调色剂定影之后夹持记录纸; 以及布置在辅助夹持部分下游的出口引导件，用于在调色剂定影从辅助夹持部分输送之后引导记录纸，调色剂固定的记录纸张表面弯曲成凹形。

公开(公告)号：US20150227095A1

公开(公告)日：2015-08-13

申请号：US14693550

申请日：2015-04-22

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

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

IPC分类号： G03G15/20

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

摘要： A fixing device capable of shifting to a sleep state includes a heat source; a rotatable fixing member that is partly heated by the heat source to heat an unfixed image carrying surface of a recording medium; a rotatable pressing member that is in pressure contact with the fixing member to form a nip portion between the pressing member and the fixing member; a rotation drive unit that directly or indirectly rotates the fixing member; a temperature detecting unit that detects a temperature of the fixing member; and a controller configured to prohibit the fixing device from shifting to the sleep state when the temperature of the fixing member in a region facing the heat source is equal to or more than a predetermined temperature T1 at a point when a predetermined time period t1 has elapsed from the stop of rotation drive of the rotation drive unit.

摘要翻译： 能够转移到睡眠状态的固定装置包括热源; 可旋转的固定构件，其被热源部分地加热以加热记录介质的未固定的图像承载表面; 与所述固定部件压力接触以在所述按压部件和所述固定部件之间形成夹持部的旋转按压部件; 旋转驱动单元，其直接或间接地旋转所述固定构件; 温度检测单元，其检测所述固定构件的温度; 以及控制器，被配置为当经过预定时间段t1的时刻，当面向热源的区域中的固定构件的温度等于或大于预定温度T1时，禁止定影装置转移到睡眠状态 从旋转驱动单元的旋转驱动停止。

公开(公告)号：US20160116869A1

公开(公告)日：2016-04-28

申请号：US14852767

申请日：2015-09-14

申请人： Kazuya SAITO ,  Ryuuichi MIMBU ,  Toshihiko SHIMOKAWA ,  Haruyuki HONDA ,  Yoshiki YAMAGUCHI ,  Yasunori ISHIGAYA ,  Yoshio HATTORI

发明人： Kazuya SAITO ,  Ryuuichi MIMBU ,  Toshihiko SHIMOKAWA ,  Haruyuki HONDA ,  Yoshiki YAMAGUCHI ,  Yasunori ISHIGAYA ,  Yoshio HATTORI

IPC分类号： G03G15/20

CPC分类号： G03G15/2042 ,  G03G2215/00734

摘要： A fixing device includes a fixing rotator rotatable in a predetermined direction of rotation and a pressure rotator pressed against the fixing rotator to form a fixing nip therebetween, through which a recording medium bearing a toner image is conveyed. A plurality of heaters heats the fixing rotator. A sensor is disposed opposite the fixing rotator and includes a plurality of temperature detection elements to detect a temperature of the fixing rotator at a plurality of spots thereon arranged in an axial direction of the fixing rotator. A controller is operatively connected to the sensor and the plurality of heaters to control the plurality of heaters based on the temperature of the fixing rotator detected by the sensor and predict a width of the recording medium in the axial direction of the fixing rotator to be conveyed to the fixing nip.

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压靠在定影旋转器上的压力旋转器，以在其间形成定影辊隙，通过该定影夹持器传送带有调色剂图像的记录介质。 多个加热器加热定影旋转器。 传感器与固定旋转体相对设置，并且包括多个温度检测元件，用于检测定影旋转器在固定旋转体的轴向上布置的多个点处的温度。 控制器可操作地连接到传感器和多个加热器，以基于由传感器检测到的定影旋转器的温度来控制多个加热器，并且预测记录介质在要传送的定影旋转器的轴向方向上的宽度 到定影辊隙。

公开(公告)号：US20170017182A1

公开(公告)日：2017-01-19

申请号：US15202859

申请日：2016-07-06

申请人： Kazuya SAITO ,  Yasunori ISHIGAYA ,  Yutaka IKEBUCHI ,  Keitaro SHOJI ,  Ryohei MATSUDA

发明人： Kazuya SAITO ,  Yasunori ISHIGAYA ,  Yutaka IKEBUCHI ,  Keitaro SHOJI ,  Ryohei MATSUDA

IPC分类号： G03G15/20

CPC分类号： G03G15/2053 ,  G03G15/2042

摘要： A fixing device includes a primary heat generator and a secondary heat generator to heat an endless belt and a temperature detector, disposed opposite the secondary heat generator, to detect a temperature of the endless belt. The secondary heat generator includes an inboard edge and an outboard edge disposed outboard from the inboard edge in an axial direction of the endless belt. The secondary heat generator has an inboard length defined between a center of a detection span of the temperature detector and the inboard edge in the axial direction of the endless belt. The secondary heat generator further has an outboard length defined between the center of the detection span of the temperature detector and the outboard edge in the axial direction of the endless belt. The secondary heat generator defines a ratio of the outboard length to the inboard length that is greater than 7/3.

摘要翻译： 固定装置包括：一次发热体和二次发热体，用于加热与二次发热体相对设置的环形带和温度检测器，以检测环形带的温度。 二次发热器包括沿环形带的轴向方向设置在内侧边缘外侧的内侧边缘和外侧边缘。 二次发热器具有限定在温度检测器的检测范围的中心和环形带的轴向方向上的内侧边缘之间的内侧长度。 次级发热器还具有限定在温度检测器的检测范围的中心与环形带的轴向方向外侧边缘之间的外侧长度。 二次发热器定义了外侧长度与内侧长度的比值大于7/3。