公开(公告)号：US20160124359A1

公开(公告)日：2016-05-05

申请号：US14921132

申请日：2015-10-23

申请人： Yutaka Ikebuchi ,  Yoshio Hattori ,  Ryuuichi Mimbu ,  Yasunori Ishigaya ,  Yoshiki Yamaguchi ,  Kazuya Saito ,  Toshihiko Shimokawa ,  Keitaro Shoji

发明人： Yutaka Ikebuchi ,  Yoshio Hattori ,  Ryuuichi Mimbu ,  Yasunori Ishigaya ,  Yoshiki Yamaguchi ,  Kazuya Saito ,  Toshihiko Shimokawa ,  Keitaro Shoji

IPC分类号： G03G15/20

CPC分类号： G03G15/2039 ,  G03G2215/00599

摘要： An image forming apparatus includes a fixing rotator and an opposed rotator pressed against the fixing rotator to form a fixing nip therebetween, through which a recording medium bearing a toner image is conveyed. A heater heats the fixing rotator. A temperature sensor contacts the opposed rotator to detect a temperature of the opposed rotator. A conveyor conveys the recording medium to the fixing nip. A driver drives the conveyor. A controller, operatively connected to the temperature sensor and the driver, controls the driver to drive the conveyor to convey the recording medium to the fixing nip based on the temperature of the opposed rotator detected by the temperature sensor. The controller causes the driver to be ready to drive the conveyor when a change in the detected temperature of the opposed rotator per unit time reaches a predetermined threshold.

摘要翻译： 图像形成装置包括固定旋转体和压靠在定影旋转体上的相对的旋转体，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。 加热器加热定影旋转器。 温度传感器接触相对的旋转体以检测相对转子的温度。 输送机将记录介质传送到定影辊隙。 驱动器驱动输送机。 可操作地连接到温度传感器和驱动器的控制器基于由温度传感器检测到的相对转子的温度来控制驱动器驱动传送器将记录介质传送到定影辊隙。 当每单位时间内相对旋转体的检测温度的变化达到预定阈值时，控制器使驾驶员准备驱动输送机。

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

IPC分类号： G03G15/20 ,  H05B1/02

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.

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

IPC分类号： G03G15/00 ,  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.

公开(公告)号：US11934126B2

公开(公告)日：2024-03-19

申请号：US17963195

申请日：2022-10-11

申请人： Yasunori Ishigaya ,  Keitaro Shoji ,  Tomoya Adachi ,  Daisuke Hirano

发明人： Yasunori Ishigaya ,  Keitaro Shoji ,  Tomoya Adachi ,  Daisuke Hirano

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.

公开(公告)号：US20230384719A1

公开(公告)日：2023-11-30

申请号：US18319594

申请日：2023-05-18

申请人： Yuma MATSUMOTO ,  Keitaro Shoji ,  Yasunori Ishigaya ,  Yuusuke Furuichi

发明人： Yuma MATSUMOTO ,  Keitaro Shoji ,  Yasunori Ishigaya ,  Yuusuke Furuichi

IPC分类号： G03G15/20

CPC分类号： G03G15/2053 ,  G03G15/2039 ,  G03G15/2064 ,  G03G2215/2035

摘要： A heating device includes: a pair of rotators to form a nip; a heating source having a heat generation area to heat at least one rotator; temperature sensors to detect a temperature of the heating source, a member in contact with the heating source, or one rotator; and a sheet sensor to detect a sheet passing through the nip. The temperature sensors include: a first temperature sensor closer to one end than a center of the heat generation area in the longitudinal direction; and a second temperature sensor closer to the center than the first temperature sensor is. The second temperature sensor is at a position shifted from the center of the heat generation area toward the first temperature sensor. The sheet sensor is on a side opposite a side on which the first temperature sensor is disposed with reference to the center of the heat generation area.

公开(公告)号：US20230367252A1

公开(公告)日：2023-11-16

申请号：US18301494

申请日：2023-04-17

申请人： Yuma MATSUMOTO ,  Keitaro Shoji ,  Yuusuke Furuichi

发明人： Yuma MATSUMOTO ,  Keitaro Shoji ,  Yuusuke Furuichi

IPC分类号： G03G15/00 ,  B65H5/02

CPC分类号： G03G15/6529 ,  B65H5/025 ,  B65H2553/27 ,  B65H2801/06 ,  G03G2215/00734 ,  G03G2215/00666 ,  G03G2215/00679

摘要： A conveyance device includes a first temperature detector and a second temperature detector that detect a temperature of a heater. A recording medium detector detects a recording medium. The first temperature detector is separated from a center position of an elastic layer of a pressure rotator farther than the second temperature detector is in an orthogonal direction perpendicular to a recording medium conveyance direction. The first temperature detector is separated from the center position for a first length and disposed in a first span defined by the center position in the orthogonal direction. The recording medium detector is disposed in a second span opposite to the first span, separated from the center position for a second length smaller than the first length, and disposed in a minimum recording medium conveyance span where the recording medium having a minimum width in the orthogonal direction is conveyed.

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

IPC分类号： G03G15/20 ,  H05B1/02

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.

公开(公告)号：US10067449B2

公开(公告)日：2018-09-04

申请号：US15194090

申请日：2016-06-27

申请人： Ryohei Matsuda ,  Yutaka Ikebuchi ,  Yasunori Ishigaya ,  Kazuya Saito ,  Keitaro Shoji

发明人： Ryohei Matsuda ,  Yutaka Ikebuchi ,  Yasunori Ishigaya ,  Kazuya Saito ,  Keitaro Shoji

IPC分类号： G03G15/20

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

摘要： A fixing device includes a primary heater and a secondary heater that heat a fixing rotator. The primary heater includes a primary major heat generation portion and a primary minor heat generation portion. The primary minor heat generation portion includes a major heat generator that generates an increased amount of heat and a minor heat generator that generates a decreased amount of heat smaller than the increased amount of heat generated by the major heat generator. The major heat generator has a width in an axial direction of the fixing rotator that is not smaller than 30 percent and not greater than 35 percent with respect to a width of the primary minor heat generation portion in the axial direction of the fixing rotator. A temperature detector is disposed opposite the minor heat generator of the primary heater to detect a temperature of the fixing rotator.

公开(公告)号：US09575447B2

公开(公告)日：2017-02-21

申请号：US15010262

申请日：2016-01-29

申请人： Yutaka Ikebuchi ,  Yasunori Ishigaya ,  Takuya Seshita ,  Kazuya Saito ,  Motoyoshi Yamano ,  Keitaro Shoji

发明人： Yutaka Ikebuchi ,  Yasunori Ishigaya ,  Takuya Seshita ,  Kazuya Saito ,  Motoyoshi Yamano ,  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。

公开(公告)号：US20170010571A1

公开(公告)日：2017-01-12

申请号：US15194090

申请日：2016-06-27

申请人： Ryohei MATSUDA ,  Yutaka Ikebuchi ,  Yasunori Ishigaya ,  Kazuya Saito ,  Keitaro Shoji

发明人： Ryohei MATSUDA ,  Yutaka Ikebuchi ,  Yasunori Ishigaya ,  Kazuya Saito ,  Keitaro Shoji

IPC分类号： G03G15/20

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

摘要： A fixing device includes a primary heater and a secondary heater that heat a fixing rotator. The primary heater includes a primary major heat generation portion and a primary minor heat generation portion. The primary minor heat generation portion includes a major heat generator that generates an increased amount of heat and a minor heat generator that generates a decreased amount of heat smaller than the increased amount of heat generated by the major heat generator. The major heat generator has a width in an axial direction of the fixing rotator that is not smaller than 30 percent and not greater than 35 percent with respect to a width of the primary minor heat generation portion in the axial direction of the fixing rotator. A temperature detector is disposed opposite the minor heat generator of the primary heater to detect a temperature of the fixing rotator.

摘要翻译： 定影装置包括加热定影旋转器的主加热器和二次加热器。 主加热器包括主要主要发热部分和初级次要发热部分。 主要次要发热部分包括产生增加的热量的主要发热体和产生比主要发热体产生的增加的热量小的热量减少的次要发热体。 主发热体的固定旋转体的轴向宽度相对于初级次发热部在固定旋转体的轴向上的宽度为30％以上且35％以下。 温度检测器设置成与初级加热器的次要发热体相对，以检测定影旋转器的温度。