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公开(公告)号：US10990057B2
公开(公告)日：2021-04-27
申请号：US16822725
申请日：2020-03-18
申请人： FUJI XEROX CO., LTD.
发明人： Jun Sekiya , Tatsuhiro Igarashi , Yasuhisa Morooka , Yuma Kubo
摘要： An image forming apparatus includes an image holding member; a charging unit; an electrostatic image forming unit; a developing unit that includes an electrostatic image developer including a toner and develops the electrostatic image formed on the surface of the image holding member with the electrostatic image developer to form a toner image; a transfer unit; and a cleaning unit that removes toner particles present on the surface of the image holding member. The cleaning unit includes a cleaning blade arranged to contact with the surface of the image holding member. The cleaning unit includes a cleaning blade A containing a contacting portion having a JIS-A hardness of 90° or more, or the cleaning unit includes a control unit B that controls a load with which the cleaning blade contacts with the image holding member, the control unit B controlling the load in a constant load mode. The toner includes toner particles; and silica particles having a number average particle size of 110 nm to 130 nm, a large-diameter-side number particle size distribution index (upper GSDp) of less than 1.080, and an average circularity of 0.94 to 0.98, wherein 80 number % or more of the silica particles have a circularity of 0.92 or more.
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公开(公告)号：US10656567B1
公开(公告)日：2020-05-19
申请号：US16558431
申请日：2019-09-03
申请人： FUJI XEROX Co., Ltd.
发明人： Tatsuhiro Igarashi , Naoki Ota , Teppei Yawada
摘要： An image forming apparatus includes an image holding member, a charging unit that charges a surface of the image holding member, an electrostatic charge image forming unit that forms an electrostatic charge image on the charged surface of the image holding member, a developing unit that includes an electrostatic charge image developing toner and that develops the electrostatic charge image on the surface of the image holding member with the electrostatic chare image developing toner to form a toner image, an intermediate transfer body that has a circumferential surface having a plurality of grooves and an average in-plane roughness ranging from 10 nm to 30 nm, a first transfer unit that first transfers the toner image formed on the surface of the image holding member to a surface of the intermediate transfer body, and a second transfer unit that second transfers the toner image transferred to the surface of the intermediate transfer body to a recording medium, wherein the electrostatic charge image developing toner satisfies the following formulae (ln η(T1)−ln η(T2))/(T1−T2)≤−0.14, (ln η(T2)−ln η(T3))/(T2−T3)≥−0.15, and (ln η(T1)−ln η(T2))/(T1−T2)
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公开(公告)号：US10539895B2
公开(公告)日：2020-01-21
申请号：US15944410
申请日：2018-04-03
申请人： FUJI XEROX CO., LTD.
发明人： Makoto Kamisaki , Naoki Ota , Tatsuhiro Igarashi , Yasuhisa Morooka , Jun Sekiya
IPC分类号： G03G9/087 , G03G15/095 , G03G15/04 , G03G9/08
摘要： An image forming apparatus includes an image carrier that includes a conductive substrate, and a photosensitive layer and a surface protection layer; a developing device that includes an electrostatic image developer containing a toner, and develops the electrostatic image to form a toner image. The toner contains an amorphous polyester resin and has a weight average molecular weight Mw in a range of from 25,000 to 60,000, and a ratio of the weight average molecular weight Mw to a number average molecular weight Mn (Mw/Mn) is in a range of from 5 to 10. In the toner, a ratio of an absorbance for a wavelength of 1500 cm−1 to an absorbance for a wavelength of 720 cm−1 is 0.6 or less, and a ratio of an absorbance for a wavelength of 820 cm−1 to the absorbance for a wavelength of 720 cm−1 is 0.4 or less.
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公开(公告)号：US20200310307A1
公开(公告)日：2020-10-01
申请号：US16556492
申请日：2019-08-30
申请人： FUJI XEROX CO., LTD.
发明人： Teppei Yawada , Naoki Ota , Tatsuhiro Igarashi
摘要： An image forming apparatus includes an image holding member, a charging unit that charges a surface of the image holding member, an electrostatic charge image forming unit that forms an electrostatic charge image on the charged surface of the image holding member, a developing unit that includes an electrostatic charge image developing toner and that develops the electrostatic charge image on the surface of the image holding member with the electrostatic chare image developing toner to form a toner image, an intermediate transfer body having a circumferential surface of which micro rubber hardness is in a range of 45 to 65, a first transfer unit that first transfers the toner image formed on the surface of the image holding member to a surface of the intermediate transfer body, and a second transfer unit that second transfers the toner image transferred to the surface of the intermediate transfer body to a recording medium, wherein the electrostatic charge image developing toner satisfies the following formulae (ln η(T1)−ln η(T2))/(T1−T2)≤−0.14, (ln η(T2)−ln η(T3))/(T2−T3)≥−0.15, and (ln η(T1)−ln η(T2))/(T1−T2)
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公开(公告)号：US09891554B2
公开(公告)日：2018-02-13
申请号：US15217386
申请日：2016-07-22
申请人： FUJI XEROX CO., LTD.
IPC分类号： G03G15/08
CPC分类号： G03G15/0865 , G03G15/0893
摘要： A developing device includes a container chamber that contains developer containing carrier and toner; a supply portion that is adjacent to the container chamber and to which supplying toner or supplying developer, which contains the supplying toner and supplying carrier, is supplied at a supplying position in the supply portion; a transporting member that transports the supplying toner or the supplying developer toward the container chamber in the supply portion; and a guide capable of guiding the developer to the supplying position.
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公开(公告)号：US09753404B2
公开(公告)日：2017-09-05
申请号：US15223982
申请日：2016-07-29
申请人： FUJI XEROX CO., LTD.
发明人： Masahiro Uchida , Manabu Furuki , Masashi Ikeda , Makoto Kamisaki , Tatsuhiro Igarashi , Teppei Yawada
IPC分类号： G03G15/08
CPC分类号： G03G15/0877 , G03G15/0886
摘要： A powder container includes a container chamber that contains powder; a transporting member that transports the powder in the container chamber; an opening that is provided in a wall of the container chamber and through which the powder is discharged out of the container chamber as the transporting member transports the powder; and a closing member that closes a lower portion of the opening and moves vertically relative to the opening in a direction opposite to a direction of vertical movement of the opening due to tilting of the container chamber.
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公开(公告)号：US09141027B1
公开(公告)日：2015-09-22
申请号：US14526964
申请日：2014-10-29
申请人： FUJI XEROX CO., LTD.
CPC分类号： G03G15/0849 , G03G15/01 , G03G15/5041 , G03G21/0011 , G03G21/0041 , G03G21/0052
摘要： A cleaning device that cleans a residual toner from a cleaning target includes a cleaning blade that blocks the residual toner containing toner particles and an external additive on the cleaning target and scrapes the residual toner from the cleaning target, a measurement unit that measures an amount of the external additive in the residual toner which is blocked by the cleaning blade and remains on the cleaning target, and a control unit that increases an amount of a toner that is supplied to the cleaning target based on a measurement result obtained by the measurement unit.
摘要翻译： 从清洁对象清洁残留调色剂的清洁装置包括清洁刮板，其将含有调色剂颗粒的残留调色剂和外部添加剂阻挡在清洁对象上，并从清洁对象物上刮下残留调色剂;测量单元， 残留调色剂中的外部添加剂被清洁刮板阻挡并保留在清洁对象上;以及控制单元，其基于由测量单元获得的测量结果而增加供给到清洁对象的调色剂的量。
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公开(公告)号：US10719041B2
公开(公告)日：2020-07-21
申请号：US16362702
申请日：2019-03-25
申请人： FUJI XEROX CO., LTD.
发明人： Tatsuhiro Igarashi , Naoki Ota , Yusuke Fukuda , Makoto Kamisaki , Yasuhisa Morooka , Jun Sekiya , Teppei Yawada , Masataka Kuribayashi , Takafumi Koide , Katsuyuki Kitajima , Shota Oshima
摘要： An image forming apparatus includes an image holding member, a charging unit that charges the surface of the image holding member, an electrostatic charge image forming unit that forms an electrostatic charge image on the charged surface of the image holding member, a developing unit that includes a developer containing toner particles containing a release agent having a melting temperature ranging from 60° C. to 100° C. and that develops the electrostatic charge image on the surface of the image holding member with the developer to form a toner image, a transferring unit that transfers the toner image formed on the surface of the image holding member to the surface of a recording medium, and a fixing unit that fixes the toner image transferred to the surface of the recording medium, wherein the fixing unit includes an endless member to be heated, the endless member contacts with the toner image transferred to the surface of the recording medium; a pressure member that presses the endless member to form a nipping region between the pressure member and the endless member; a first heater that is in contact with the inner surface of the endless member in the nipping region to heat the endless member; a second heater that is disposed in contact with the endless member and downstream of the first heater in the operational direction of the endless member to heat the endless member; and a collection member that is disposed in the vicinity of the second heater so as to face the outer surface of the endless member and that collects particles.
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公开(公告)号：US10036980B2
公开(公告)日：2018-07-31
申请号：US15350670
申请日：2016-11-14
申请人： FUJI XEROX CO., LTD.
发明人： Tatsuhiro Igarashi , Manabu Furuki , Masahiro Uchida , Makoto Kamisaki , Teppei Yawada , Jun Sekiya , Koji Funaba
IPC分类号： G03G15/08
CPC分类号： G03G15/0865 , G03G15/0893
摘要： A developing device includes a container that contains a developer containing a toner therein, a supply tank that is provided adjacent to the container and is supplied with the toner at a supply point within the supply tank, a transport member that is rotatably driven within the supply tank to transport the toner to the container, and an annular member, wherein the annular member has an inner diameter larger than a diameter of a rotatably-driven shaft in the transport member, the rotatably-driven shaft extends through the annular member, and the annular member is held in a partial section in a longitudinal direction of the rotatably-driven shaft.
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公开(公告)号：US09488952B2
公开(公告)日：2016-11-08
申请号：US14850023
申请日：2015-09-10
申请人： FUJI XEROX CO., LTD.
发明人： Masashi Ikeda , Yoshinari Ueno , Manabu Furuki , Masahiro Uchida , Tatsuhiro Igarashi , Mona Tasaki , Teppei Yawada
CPC分类号： G03G21/0011 , B08B1/005 , B08B1/02 , G03G21/0005 , G03G21/0094
摘要： A cleaning device includes a removal member that removes residual objects from a surface of a target cleaning body by contacting with the surface in a linear manner and rubbing against the surface and forms a piled body which is constructed of a portion of the residual objects at a contact location, and a pressure device that presses the piled body to increase a strength of the piled body.
摘要翻译： 清洁装置包括：去除构件，其通过与表面以线性方式接触并与表面摩擦而从目标清洁体的表面除去残留物体，并形成由一部分残留物体构成的堆叠体 接触位置，以及按压堆积体以增加堆积体强度的压力装置。
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