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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。
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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.
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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.
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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。
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公开(公告)号：US20170248879A1
公开(公告)日：2017-08-31
申请号：US15410179
申请日：2017-01-19
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.
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公开(公告)号：US20190094764A1
公开(公告)日：2019-03-28
申请号：US16185091
申请日：2018-11-09
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.
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公开(公告)号：US20170255149A1
公开(公告)日：2017-09-07
申请号：US15433667
申请日：2017-02-15
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.
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公开(公告)号：US20200159149A1
公开(公告)日：2020-05-21
申请号：US16676673
申请日：2019-11-07
申请人： Takumi WAIDA , Yoshio HATTORI , Yasunori ISHIGAYA , Yoshikuni SASAKI , Takahiro IMADA , Hironori YAMAOKA , Hiromasa TAKAGI , Keitaro SHOJI
发明人： Takumi WAIDA , Yoshio HATTORI , Yasunori ISHIGAYA , Yoshikuni SASAKI , Takahiro IMADA , Hironori YAMAOKA , Hiromasa TAKAGI , Keitaro SHOJI
摘要： A fixing device includes a fixing rotator, a pressure rotator, a cleaner, a moving assembly, and a temperature detector. The fixing rotator heats and fixes a toner image onto a recording medium. The pressure rotator presses against the fixing rotator. The cleaner contacts and cleans a cleaning target, which includes one of the fixing rotator and the pressure rotator. The moving assembly moves the cleaner between a contact position where the cleaner contacts the cleaning target and a separate position where the cleaner is apart from the cleaning target. The temperature detector detects a temperature of one of the cleaner and the cleaning target. The moving assembly moves the cleaner from the contact position to the separate position or from the separate position to the contact position during rotation of the cleaning target, in a case in which the temperature detected is greater than a given value
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公开(公告)号：US20170017182A1
公开(公告)日：2017-01-19
申请号：US15202859
申请日：2016-07-06
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。
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公开(公告)号：US20160161890A1
公开(公告)日：2016-06-09
申请号：US15040691
申请日：2016-02-10
申请人： Keitaro SHOJI , Kenji ISHll , Hiromasa TAKAGI , Takayuki SEKI
发明人： Keitaro SHOJI , Kenji ISHll , Hiromasa TAKAGI , Takayuki SEKI
IPC分类号： G03G15/20
CPC分类号： G03G15/2053 , G03G2215/2035
摘要： A fixing device includes a fixing rotator rotatable in a predetermined direction of rotation and an opposed rotator disposed opposite the fixing rotator to form a fixing nip therebetween through which a recording medium bearing a toner image is conveyed. A heater is disposed opposite the fixing rotator to heat the fixing rotator. A nip formation pad is disposed opposite an inner circumferential surface of the fixing rotator. The nip formation pad includes a base, a first thermal conductor sandwiched between the base and the fixing rotator and having a first thermal conductivity greater than a thermal conductivity of the base, and a bulge projecting from the first thermal conductor toward the opposed rotator at a downstream end of the first thermal conductor in a recording medium conveyance direction.
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