公开(公告)号：US20200379384A1

公开(公告)日：2020-12-03

申请号：US16829083

申请日：2020-03-25

申请人： Masahiro SAMEI ,  Tomoya ADACHI ,  Yukimichi SOMEYA ,  Yuusuke FURUICHI ,  Hiroshi SEO

发明人： Masahiro SAMEI ,  Tomoya ADACHI ,  Yukimichi SOMEYA ,  Yuusuke FURUICHI ,  Hiroshi SEO

IPC分类号： G03G15/20

摘要： A heating device includes a sleeve-shaped flexible fixing rotator, a heater to contact an inner surface of the fixing rotator, a pressure rotator pressed against the heater via the fixing rotator to form a nip between the fixing rotator and the pressure rotator, a thermometer to detect a temperature of the heater, and a pressing force switching mechanism to switch a pressing force between the heater and the pressure rotator. The pressing force switching mechanism switches the pressing force between the heater and the pressure rotator in at least two stages, a standard force when the temperature of the heater detected by the thermometer increases and reaches a predetermined temperature and before the medium to be heated passes through the nip, and a reduced force smaller than the standard force when the temperature of the heater detected by the thermometer is lower than the predetermined temperature.

公开(公告)号：US20220382191A1

公开(公告)日：2022-12-01

申请号：US17739509

申请日：2022-05-09

申请人： Yuusuke FURUICHI ,  Hiroshi SEO ,  Tomoya ADACHI ,  Daisuke HIRANO

发明人： Yuusuke FURUICHI ,  Hiroshi SEO ,  Tomoya ADACHI ,  Daisuke HIRANO

IPC分类号： G03G15/20

摘要： A heating device includes a planar heater, a rotator, a pressure rotator, a heating device frame, a resistor, and a discharger. The pressure rotator has a conductive outer surface and presses the rotator. The heating device frame holds the pressure rotator. The discharger is in contact with the conductive outer surface of the pressure rotator and grounded via the resistor and the heating device frame.

公开(公告)号：US20240012353A1

公开(公告)日：2024-01-11

申请号：US18254969

申请日：2021-12-23

申请人： Yuusuke FURUICHI ,  Takamasa HASE ,  Hiroshi SEO ,  Hideki SUGIURA ,  Maiko KOEDA ,  Masahiko ISHIKAWA

发明人： Yuusuke FURUICHI ,  Takamasa HASE ,  Hiroshi SEO ,  Hideki SUGIURA ,  Maiko KOEDA ,  Masahiko ISHIKAWA

IPC分类号： G03G15/20

CPC分类号： G03G15/2057 ,  G03G15/2064 ,  G03G15/2039 ,  G03G2215/2032

摘要： Provided is an image forming apparatus including a toner, and a fixing device configured to fix an image formed with the toner on a recording medium. The fixing device includes a fixing belt that is an endless belt, and a planar member configured to heat the fixing belt. An environmental fluctuation rate X is 45% or greater but 85% or less, and the environmental fluctuation rate X is represented by:


Environmental fluctuation rate X=(Q1−Q2)/{(Q1+Q2)/2}

where Q1 is a quantity of electric charge of the toner in an environment having a temperature of 10 degrees Celsius and relative humidity of 15%, Q2 is a quantity of electric charge of the toner in an environment having a temperature of 27 degrees Celsius and relative humidity of 80%, and a unit for Q1 and Q2 is μC/g.

公开(公告)号：US20200183307A1

公开(公告)日：2020-06-11

申请号：US16656724

申请日：2019-10-18

申请人： Yuusuke FURUICHI ,  Hiroshi SEO ,  Yoshiki YAMAGUCHI

发明人： Yuusuke FURUICHI ,  Hiroshi SEO ,  Yoshiki YAMAGUCHI

IPC分类号： G03G15/20 ,  G05D23/24 ,  G03G21/20 ,  G03G15/00 ,  G03G21/16

摘要： A temperature detector for being positioned with respect to a counterpart includes a temperature detecting element that detects a temperature of a detecting target and a holding body that holds the temperature detecting element. A projecting engagement engages the counterpart and is mounted on the holding body.

公开(公告)号：US20140219673A1

公开(公告)日：2014-08-07

申请号：US14173171

申请日：2014-02-05

申请人： Takeshi YAMAMOTO ,  Kazuhito KISHI ,  Takumi WAlDA ,  Masahiro SAMEI ,  Hiroshi ONO ,  Ippei FUJIMOTO ,  Hiroshi SEO ,  Ryota YAMASHINA ,  Yasunori ISHIGAYA

发明人： Takeshi YAMAMOTO ,  Kazuhito KISHI ,  Takumi WAlDA ,  Masahiro SAMEI ,  Hiroshi ONO ,  Ippei FUJIMOTO ,  Hiroshi SEO ,  Ryota YAMASHINA ,  Yasunori ISHIGAYA

IPC分类号： G03G15/20

CPC分类号： G03G15/2042 ,  G03G2215/2035

摘要： A fixing device includes a rotatable, endless fixing belt; a rotatable contact member configured to contact a circumferential surface of the fixing belt to form a nip in association with the fixing belt; and a heating member disposed at an interior surface of the fixing belt, configured to heat the fixing belt. The heating member includes a multiple heat sources arranged along the width of a sheet of recording media in a direction perpendicular to a sheet conveyance direction. A controller changes an area to be heated by each heat source based on image data and corresponding to an unfixed image on the sheet. The fixing belt is heated by the heating member so that the unfixed image on the sheet that has been conveyed to the nip is fixed onto the sheet at least with heat. The heating member is disposed at a portion other than the fixing nip.

摘要翻译： 定影装置包括可旋转的环形定影带; 可旋转接触构件，其构造成接触所述定影带的周向表面以与所述定影带相关联地形成辊隙; 以及设置在所述定影带的内表面处的加热构件，其构造成加热所述定影带。 加热构件包括沿垂直于片材输送方向的方向沿着记录介质片的宽度布置的多个热源。 控制器基于图像数据改变每个热源要加热的区域，并对应于片材上的未定影图像。 定影带被加热部件加热，使得已经输送到辊隙的片材上的未定影图像至少热固定在片材上。 加热构件设置在定影夹持部以外的部分。

公开(公告)号：US20140219672A1

公开(公告)日：2014-08-07

申请号：US14167121

申请日：2014-01-29

申请人： Masahiro SAMEI ,  Takumi WAIDA ,  Hiroshi ONO ,  Takeshi YAMAMOTO ,  Ippei FUJIMOTO ,  Hiroshi SEO ,  Yasunori ISHIGAYA ,  Kazuhito KISHI ,  Ryota YAMASHINA

发明人： Masahiro SAMEI ,  Takumi WAIDA ,  Hiroshi ONO ,  Takeshi YAMAMOTO ,  Ippei FUJIMOTO ,  Hiroshi SEO ,  Yasunori ISHIGAYA ,  Kazuhito KISHI ,  Ryota YAMASHINA

IPC分类号： G03G15/20

CPC分类号： G03G15/2039 ,  G03G2215/2035

摘要： A fixing device includes a fixing rotary body, an opposed member, a heater, and a heating controller. The opposed member opposes the fixing rotary body to form a nipping portion therebetween. The heater includes heat generators arranged in a width direction of a recording medium. When the recording medium fed to the nipping portion has an image area and a non-image area, the heating controller controls the outputs of the heat generators based on image information so that a first heat generator of the heat generators corresponding to the image area is higher in temperature and a second heat generator of the heat generators corresponding to the non-image area is lower in temperature. Based on information other than the image information, the heating controller temporarily shifts an area of the fixing rotary body corresponding to the non-image area to a temperature differing from a normal temperature.

摘要翻译： 定影装置包括固定旋转体，相对构件，加热器和加热控制器。 相对的构件与固定旋转体相对，以在它们之间形成夹紧部分。 加热器包括沿记录介质的宽度方向布置的热发生器。 当馈送到夹持部分的记录介质具有图像区域和非图像区域时，加热控制器基于图像信息控制发热体的输出，使得与图像区域对应的热发生器的第一热发生器为 对应于非图像区域的发热体的温度越高，第二发热体的温度越低。 基于除了图像信息之外的信息，加热控制器将与非图像区域相对应的定影旋转体的区域临时移动到与正常温度不同的温度。

公开(公告)号：US20130308990A1

公开(公告)日：2013-11-21

申请号：US13864320

申请日：2013-04-17

申请人： Masahiro SAMEI ,  Hiroshi SEO ,  Ryota YAMASHINA

发明人： Masahiro SAMEI ,  Hiroshi SEO ,  Ryota YAMASHINA

IPC分类号： G03G15/20

CPC分类号： G03G15/2007 ,  G03G15/2053 ,  G03G15/2064 ,  G03G2215/2035

摘要： A fixing device includes an endless belt formed into a loop and rotatable in a given direction of rotation. An opposed rotary body contacts the endless belt to form a fixing nip therebetween through which a recording medium bearing a toner image is conveyed. A heater is disposed in proximity to an irradiation span spanning on an inner circumferential surface of the endless belt in a circumferential direction thereof to emit light that irradiates and heats the irradiation span of the endless belt. A shield is interposed between the heater and the irradiation span of the endless belt in a diametrical direction thereof to shield the irradiation span of the endless belt from heated air surrounding the heater.

摘要翻译： 固定装置包括环形带，其形成为环并且沿给定的旋转方向可旋转。 相对的旋转体与环形带接触以在其间形成定影辊隙，通过该固定夹持器传送带有调色剂图像的记录介质。 加热器设置在跨越环形带的圆周方向的内周面上的照射跨度附近，以发射照射并加热环形带的照射跨度的光。 在加热器和环形带的径向的辐射跨度之间插入屏蔽件，以将环形带的照射跨度从围绕加热器的加热空气屏蔽。

公开(公告)号：US20090245897A1

公开(公告)日：2009-10-01

申请号：US12408318

申请日：2009-03-20

申请人： Hiroshi SEO ,  Takamasa Hase

发明人： Hiroshi SEO ,  Takamasa Hase

IPC分类号： G03G15/20

CPC分类号： H05B6/145 ,  G03G15/2039

摘要： A fixer includes a fixing member provided with a rotary heat generator, a pressure member to form a nip with the fixing member to sandwich the sheet, an excitation coil disposed facing a heat generation layer of the rotary heat generator to generate magnetic flux that inductively heats the heat generation layer, a loop-shaped demagnetization coil unit disposed facing the heat generation layer to generate magnetic flux that partly counteracts the magnetic flux generated by the excitation coil, a first magnetic core disposed in a first area that is enclosed by both the excitation coil and the demagnetization coil unit, and a second magnetic core disposed in a second area that is outside a loop of the demagnetization coil unit and enclosed by the excitation coil. The first magnetic core and the second magnetic core are magnetically continuous in a rotary axial direction of the rotary heat generator.

摘要翻译： 定影装置包括一个设置有旋转发热器的固定件，一个压紧件，用于与该固定件形成一夹紧片材的辊隙;一个面向旋转发热器的发热层的励磁线圈，以产生感应加热的磁通量 所述发热层是与所述发热层相对配置的环状去磁线圈单元，其产生部分抵消由所述励磁线圈产生的磁通的磁通;第一磁芯，配置在由所述励磁线圈包围的第一区域中; 线圈和去磁线圈单元，以及设置在第二区域中的第二磁芯，该第二区域位于消磁线圈单元的环路外部并被励磁线圈封闭。 第一磁芯和第二磁芯在旋转发热体的旋转轴向上是磁性连续的。

公开(公告)号：US20200241453A1

公开(公告)日：2020-07-30

申请号：US16752816

申请日：2020-01-27

申请人： Jun OKAMOTO ,  Seiji SAITOH ,  Yutaka NAITOH ,  Toshiharu HACHISUKA ,  Hiroshi SEO ,  Daisuke INOUE ,  Masao KATOH ,  Yutaka ASO ,  Naohiro FUNADA ,  Tomoo ASAMI

发明人： Jun OKAMOTO ,  Seiji SAITOH ,  Yutaka NAITOH ,  Toshiharu HACHISUKA ,  Hiroshi SEO ,  Daisuke INOUE ,  Masao KATOH ,  Yutaka ASO ,  Naohiro FUNADA ,  Tomoo ASAMI

IPC分类号： G03G15/20 ,  G03G21/16

摘要： A fixing device includes a fixing member, at least one temperature detector, and a device-side drawer connector. The at least one temperature detector is configured to detect a temperature of the fixing member, the at least one temperature detector including a plurality of lead wires. The device-side drawer connector has a terminal portion configured to fit with a terminal portion of a body-side drawer connector of an image forming apparatus body to connect the plurality of lead wires of the at least one temperature detector to the image forming apparatus body. The device-side drawer connector is configured to branch a signal wire of the plurality of lead wires of the at least one temperature detector into a plurality of systems. A plurality of earth wires of the plurality of lead wires of the at least one temperature detector is short-circuited to each other.

公开(公告)号：US20130209122A1

公开(公告)日：2013-08-15

申请号：US13753827

申请日：2013-01-30

申请人： Ryota YAMASHINA ,  Hiroshi SEO ,  Ippei FUJIMOTO ,  Takumi WAIDA

发明人： Ryota YAMASHINA ,  Hiroshi SEO ,  Ippei FUJIMOTO ,  Takumi WAIDA

IPC分类号： G03G15/20

CPC分类号： G03G15/205 ,  G03G2215/2029

摘要： A fixing device includes a rotatable fuser member, a rotatable pressure member, a heater, and a controller. The rotatable fuser member is subjected to heating. The rotatable pressure member is disposed opposite the fuser member. The pressure member presses against the fuser member to form a fixing nip therebetween, through which multiple recording media, each spaced apart from each other by an interval distance in a conveyance direction, are sequentially conveyed at a conveyance speed. The heater is disposed adjacent to the fuser member to heat the fuser member. The controller is operatively connected to the heater to control power supply to the heater through a series of on-off switching control cycles, each including an on-time during which the heater power supply is on, and an off-time during which the heater power supply is off, in synchronization with conveyance of the recording medium.