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公开(公告)号：US12085877B2
公开(公告)日：2024-09-10
申请号：US18168302
申请日：2023-02-13
申请人： Keitaro Shoji , Yasunori Ishigaya , Daisuke Hirano
发明人： Keitaro Shoji , Yasunori Ishigaya , Daisuke Hirano
CPC分类号： G03G15/2039 , H05B1/0241
摘要： A conveyance device to convey a recording medium includes a heater, a first temperature detector, a second temperature detector, and a recording medium detector. The heater heats the recording medium. The first temperature detector and the second temperature detector detect a temperature of the heater. The recording medium detector detects the recording medium. The first temperature detector is disposed at a position farther from a center position of a heating region of the heater than the second temperature detector in a conveyance orthogonal direction. The conveyance orthogonal direction is along a surface of the recording medium and orthogonal to a direction in which the recording medium is conveyed. The recording medium detector is disposed on a side opposite to the first temperature detector with respect to the second temperature detector in the conveyance orthogonal direction.
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公开(公告)号：US11934126B2
公开(公告)日：2024-03-19
申请号：US17963195
申请日：2022-10-11
IPC分类号： G03G15/20
CPC分类号： G03G15/2053 , G03G2215/2003
摘要： A heating device includes a first rotator, a heater including a base and a heat generator, and a second rotator contacting the first rotator. The heat generator adjacent to the base defines a heat generation area having one edge close to one edge of the base in a longitudinal direction of the base. A length between the one edge of the base and the one edge of the heat generation area is longer than a length between the other edge of the base and the other edge of the heat generation area. The second rotator has one edge close to the one edge of the heat generation area. A length between the one edge of the second rotator and the one edge of the heat generation area is shorter than a length between the other edge of the second rotator and the other edge of the heat generation area.
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公开(公告)号：US20230266699A1
公开(公告)日：2023-08-24
申请号：US18168302
申请日：2023-02-13
申请人： Keitaro Shoji , Yasunori Ishigaya , Daisuke Hirano
发明人： Keitaro Shoji , Yasunori Ishigaya , Daisuke Hirano
CPC分类号： G03G15/2039 , H05B1/0241
摘要： A conveyance device to convey a recording medium includes a heater, a first temperature detector, a second temperature detector, and a recording medium detector. The heater heats the recording medium. The first temperature detector and the second temperature detector detect a temperature of the heater. The recording medium detector detects the recording medium. The first temperature detector is disposed at a position farther from a center position of a heating region of the heater than the second temperature detector in a conveyance orthogonal direction. The conveyance orthogonal direction is along a surface of the recording medium and orthogonal to a direction in which the recording medium is conveyed. The recording medium detector is disposed on a side opposite to the first temperature detector with respect to the second temperature detector in the conveyance orthogonal direction.
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公开(公告)号：US20160223964A1
公开(公告)日：2016-08-04
申请号：US15010262
申请日：2016-01-29
申请人： Yutaka IKEBUCHI , Yasunori Ishigaya , Takuya Seshita , Kazuya Saito , Yamano Motoyoshi , Keitaro Shoji
发明人： Yutaka IKEBUCHI , Yasunori Ishigaya , Takuya Seshita , Kazuya Saito , Yamano Motoyoshi , Keitaro Shoji
IPC分类号： G03G15/20
CPC分类号： G03G15/2053 , G03G15/2064
摘要： A fixing device includes a nip formation pad to form a fixing nip between a first fixing rotator and a second fixing rotator, through which a recording medium bearing a toner image is conveyed. The nip formation pad includes a first planar face, a second planar face disposed downstream from the first planar face in a recording medium conveyance direction and being parallel to the first planar face, and a joint face bridging the first planar face and the second planar face. The joint face includes a first curved portion adjoining the first planar face and having a first curvature in a first direction in which a circumferential face of the second fixing rotator is curved and a second curved portion adjoining the second planar face and having a second curvature in a second direction opposite the first direction.
摘要翻译： 定影装置包括压区形成垫，以在第一固定旋转器和第二固定旋转器之间形成定影夹持部，通过该固定旋转器传送承载调色剂图像的记录介质。 压区形成垫包括第一平面，第二平面，其在记录介质传送方向上设置在第一平面的下游并且平行于第一平面;以及接合面，桥接第一平面和第二平面 。 接合面包括与第一平面相邻的第一弯曲部分，并且具有第一方向的第一曲率，其中第二定影旋转体的周面弯曲，第二弯曲部分邻接第二平面并且具有第二曲率 与第一方向相反的第二方向。
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公开(公告)号：US11500314B2
公开(公告)日：2022-11-15
申请号：US17443462
申请日：2021-07-27
申请人： Keitaro Shoji , Yoshio Hattori , Yoshikuni Sasaki , Takahiro Imada , Hiromasa Takagi , Yasunori Ishigaya , Takumi Waida
发明人： Keitaro Shoji , Yoshio Hattori , Yoshikuni Sasaki , Takahiro Imada , Hiromasa Takagi , Yasunori Ishigaya , Takumi Waida
IPC分类号： G03G15/20
摘要： An image forming apparatus includes an image forming device that forms a toner image on a recording medium, a first rotator, and a second rotator that presses against the first rotator to form a nip therebetween. The first rotator conveys the recording medium bearing the toner image through the nip with a first orientation of the recording medium to fix the toner image on the recording medium to create a cleaning sheet bearing a cleaning image in a cleaning sheet creation mode. The first rotator conveys the cleaning sheet bearing the cleaning image through the nip with a second orientation of the cleaning sheet, that is different from the first orientation of the recording medium, such that the cleaning image is disposed opposite the first rotator to cause the cleaning image to remove a foreign substance from a surface of the first rotator in a cleaning mode.
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公开(公告)号：US10152006B2
公开(公告)日：2018-12-11
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
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.
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公开(公告)号：US09753417B2
公开(公告)日：2017-09-05
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
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.
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公开(公告)号：US12025935B2
公开(公告)日：2024-07-02
申请号：US18152462
申请日：2023-01-10
申请人： Yasunori Ishigaya , Keitaro Shoji
发明人： Yasunori Ishigaya , Keitaro Shoji
IPC分类号： G03G15/20
CPC分类号： G03G15/2053
摘要： A heating device includes a heater including a heat generation portion and a base mounting the heat generation portion. The base includes a first lateral end portion and a second lateral end portion in a longitudinal direction of the base. The first lateral end portion has a first length and the second lateral end portion has a second length that is smaller than the first length in the longitudinal direction of the base. A thermal conduction aid contacts the heater and includes a first lateral end projection and a second lateral end projection that project beyond the heat generation portion in the longitudinal direction of the base. The first lateral end projection has a first volume and the second lateral end projection has a second volume that is greater than the first volume.
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公开(公告)号：US10156818B2
公开(公告)日：2018-12-18
申请号：US15410179
申请日：2017-01-19
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. 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：US09804546B2
公开(公告)日：2017-10-31
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.
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