公开(公告)号：US12038706B2

公开(公告)日：2024-07-16

申请号：US18339143

申请日：2023-06-21

申请人： CANON KABUSHIKI KAISHA

发明人： Yuhei Takei

IPC分类号： G03G15/20

CPC分类号： G03G15/2053 ,  G03G15/2064 ,  G03G2215/2032 ,  G03G2215/2041

摘要： A fixing apparatus includes a fixing belt, a steering roller, a pressure rotation member, and a contact-separation mechanism. The contact-separation mechanism moves the pressure rotation member to a position where the pressure rotation member is in a contact state with the fixing belt and a position where the pressure rotation member is in a separated state from the fixing belt. Swing of the steering roller is controlled so that the fixing belt moves to a predetermined position in a fixing belt width direction. A distance between a center position of the fixing belt in tilting the steering roller for a first time after the center position is separated from a center position of a range of movement of the fixing belt and the center position of the range of movement of the fixing belt in the width direction is smaller in the separated state than in the contact state.

公开(公告)号：US11940749B2

公开(公告)日：2024-03-26

申请号：US17989716

申请日：2022-11-18

申请人： Yoshiki Yamaguchi

发明人： Yoshiki Yamaguchi

IPC分类号： G03G15/20

CPC分类号： G03G15/2053 ,  G03G15/2017 ,  G03G15/2064 ,  G03G2215/2032 ,  G03G2215/2035

摘要： A fixing device includes a fixing rotator, a pressure rotator, a heater inside the fixing rotator, a reflector, and a sliding member. The pressure rotator is in contact with the fixing rotator to form a nip and presses a recording medium passing through the nip. The reflector includes a reflecting portion that reflects radiant heat radiated by the heater toward an inner circumferential surface of the fixing rotator and a pressure receiving portion that receives a pressing force of the pressure rotator via the fixing rotator. The pressure receiving portion is thermally coupled to the reflecting portion. The sliding member is between the pressure receiving portion and the fixing rotator and in contact with the pressure receiving portion and the fixing rotator. With respect to the inner circumferential surface of the fixing rotator, the sliding member has a smaller friction coefficient than a surface of the pressure receiving portion.

公开(公告)号：US20240036502A1

公开(公告)日：2024-02-01

申请号：US18485524

申请日：2023-10-12

申请人： Toshiba Tec Kabushiki Kaisha

发明人： Sasuke ENDO

IPC分类号： G03G15/20

CPC分类号： G03G15/2053 ,  G03G15/2039 ,  G03G15/2064 ,  G03G2215/2032

摘要： A heating unit includes a cylinder which rotates about an axis parallel to a first direction. A heater has a first surface abutting on an inner surface of the cylinder at a nip position. A support member is on a second surface of the heater and also contacts the cylinder. A first heating element is in the heater at a first position along the first direction. A second heating element in the heater is at a second position spaced from the first position. A first temperature sensor is above the first position. A locking portion of the heater is at a third position along the first direction. The locking portion engages the support member and restricts movement of the heater in the first direction. The first position is near a first outer edge of the cylinder. The second position is closer to a central portion of the cylinder.

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：US11754951B2

公开(公告)日：2023-09-12

申请号：US17685304

申请日：2022-03-02

申请人： TOSHIBA TEC KABUSHIKI KAISHA

发明人： Osamu Takagi

IPC分类号： G03G15/00 ,  G03G15/20

CPC分类号： G03G15/2053 ,  G03G15/2042 ,  G03G2215/2032

摘要： A heat generating member includes a plurality of heat generating portions configured to generate heat and including a first heat generating portion having a meandering shape, and a plurality of second heat generating portions between two of which the first heat generating portion is disposed.

公开(公告)号：US20190094731A1

公开(公告)日：2019-03-28

申请号：US15915843

申请日：2018-03-08

申请人： FUJI XEROX CO., LTD.

发明人： Tatsuhiro IGARASHI ,  Manabu FURUKI ,  Naoki OTA ,  Makoto KAMISAKI ,  Yasuhisa MOROOKA ,  Jun SEKIYA

IPC分类号： G03G15/20 ,  G03G9/087 ,  G03G15/08

CPC分类号： G03G9/08755 ,  G03G9/0821 ,  G03G9/08795 ,  G03G9/08797 ,  G03G15/08 ,  G03G15/2007 ,  G03G15/2017 ,  G03G15/2053 ,  G03G2215/2032 ,  G03G2215/2035 ,  G03G2215/2074

摘要： An image forming apparatus includes an image holding member, a charging device, an electrostatic charge image forming device, a developing device having a toner, a transfer device, and a fixing device, wherein the fixing device includes a fixing belt, a rotational member, and a heater; the toner contains an amorphous polyester resin as a binder resin; and the toner has a weight average molecular weight Mw and a number average molecular weight Mn, Mw is from 25000 to 60000, and Mw/Mn is from 5 to 10, and has an infrared absorption spectrometry, the ratio of absorbance for a wavelength of 1500 cm−1 to absorbance for a wavelength of 720 cm−1 is 0.6 or less, and the ratio of absorbance for a wavelength of 820 cm−1 to absorbance for a wavelength of 720 cm−1 is 0.4 or less.

公开(公告)号：US10061239B2

公开(公告)日：2018-08-28

申请号：US15459108

申请日：2017-03-15

申请人： KABUSHIKI KAISHA TOSHIBA ,  TOSHIBA TEC KABUSHIKI KAISHA

发明人： Kazuhiko Kikuchi ,  Kazutoshi Takahashi ,  Toshihiro Sone

IPC分类号： G03G15/20

CPC分类号： G03G15/2053 ,  G03G15/206 ,  G03G15/2064 ,  G03G2215/2032 ,  G03G2215/2035 ,  G03G2215/2041

摘要： A fixing device according to an embodiment includes a first rotator, a belt, and a second rotator. The belt forms a nip by abutting onto a surface of the first rotator. The second rotator is disposed to abut onto an inner circumferential surface of the belt. The second rotator presses the belt against the first rotator such that the dynamic frictional force between the inner circumferential surface of the belt and the second rotator becomes equal to or smaller than 0.98 N.

公开(公告)号：US09983524B2

公开(公告)日：2018-05-29

申请号：US15375429

申请日：2016-12-12

申请人： Sharp Kabushiki Kaisha

发明人： Kousuke Namisaki ,  Masayuki Nakanishi ,  Masatsugu Ohishi

IPC分类号： G03G15/20

CPC分类号： G03G15/2053 ,  G03G15/2042 ,  G03G2215/0132 ,  G03G2215/1623 ,  G03G2215/2029 ,  G03G2215/2032

摘要： A fixing portion is provided with a fixing roller, a heating roller having a heat source, a fixing belt stretched between the fixing roller and the heating roller, and a pressurizing roller that is brought into pressure contact with the fixing roller across the fixing belt and forms a nip portion into which a sheet of paper is conveyed between the fixing belt and the pressurizing roller. The fixing portion is further provided with a pad that has a contact surface portion in contact with the inner peripheral surface of the fixing belt, and a biasing member that biases the pad in a direction in which the contact surface portion is brought into pressure contact with the inner peripheral surface of the fixing belt. The pad is configured so as to pivot about the rotating shaft of the heating roller.

公开(公告)号：US09933731B2

公开(公告)日：2018-04-03

申请号：US15249523

申请日：2016-08-29

申请人： FUJI XEROX CO., LTD.

发明人： Kouichi Kimura ,  Toshinori Sasaki ,  Mizuki Sugino ,  Mitsutoshi Hongo

IPC分类号： G03G15/20

CPC分类号： G03G15/2039 ,  G03G15/0189 ,  G03G15/2021 ,  G03G2215/2032 ,  G03G2215/2041

摘要： An image forming apparatus includes a heating unit that heats a recording material, a contact member that is positioned upstream or downstream from the heating unit in a transport direction of the recording material and is in contact with the recording material, the contact member being configured in such a manner that a portion of the contact member that is in contact with the recording material moves with the recording material, a temperature detection unit that detects a temperature of the contact member, and a control unit that controls, based on a detection result obtained by the temperature detection unit, an output of the heating unit.

公开(公告)号：US20180067428A1

公开(公告)日：2018-03-08

申请号：US15799734

申请日：2017-10-31

申请人： TOSHIBA TEC KABUSHIKI KAISHA

发明人： Osamu TAKAGI

IPC分类号： G03G15/20

CPC分类号： G03G15/2053 ,  G03G15/2042 ,  G03G2215/2032

摘要： A fixing device includes a roller, an endless belt, and a heat generating member disposed in a space inside the endless belt, extending in a width direction of the endless belt, and pressing the endless belt against the roller. A sheet is passed through a nip formed between the roller and a portion of the endless belt pressed by the heat generating member, such that an image on the sheet is fixed thereto. The heat generating member includes first and second heat generating portions that are adjacent to each other along the width direction and independently operable from each other. A boundary of the first and second heat generating portions extends in a direction inclined with respect to a sheet conveying direction.