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公开(公告)号：US10948848B1
公开(公告)日：2021-03-16
申请号：US16783454
申请日：2020-02-06
申请人： FUJI XEROX CO., LTD.
IPC分类号： G03G15/08
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 and develops the electrostatic image with the electrostatic image developer, a transfer unit, a fixing unit, a replenishment toner container that includes a replenishment toner that is to be supplied into the developing unit and discharges the replenishment toner by rotation of the replenishment toner container, a replenishment toner container mounting unit that holds the replenishment toner container and rotates the replenishment toner container, and a toner supply pass that connects the replenishment toner container mounting unit to the developing unit. The replenishment 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：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：US09367001B1
公开(公告)日：2016-06-14
申请号：US14934786
申请日：2015-11-06
申请人： FUJI XEROX CO., LTD.
发明人： Katsuyuki Kitajima , Naoki Ota , Nagahito Ichijo
CPC分类号： G03G9/0804 , G03G9/0823 , G03G9/0825 , G03G9/087 , G03G15/2017
摘要： An image forming apparatus includes a fixing unit that fixes a toner image on a surface of a recording medium while transporting the recording medium with a contact portion of a first member and a second member, and a moving unit that moves at least one of the first member and the second member toward a direction intersecting with a transport direction of the recording medium, wherein a toner has a sea and island structure of a sea portion containing a binder resin and an island portion containing a release agent, a maximum frequent value in distribution of the eccentricity B of the island portion containing the release agent is in a range of from 0.75 to 0.95, a skewness in the distribution of the eccentricity B is from −1.10 to −0.50, and the eccentricity B is defined in the specification.
摘要翻译： 图像形成装置包括：固定单元，其在利用第一构件和第二构件的接触部分输送记录介质的同时将调色剂图像定影在记录介质的表面上;以及移动单元，其移动第一 构件和第二构件朝向与记录介质的输送方向相交的方向，其中调色剂具有包含粘合剂树脂的海洋部分的海岛结构和包含脱模剂的岛部分，最大频率分布 包含脱模剂的岛部的偏心度B在0.75〜0.95的范围内，偏心率B的分布偏斜为-1.10〜-0.50，偏心B在本说明书中定义。
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4.发明申请公开(公告)号：US20200301311A1
公开(公告)日：2020-09-24
申请号：US16545593
申请日：2019-08-20
申请人： FUJI XEROX CO., LTD.
摘要： An image forming apparatus includes an image carrier; a charging unit that charges a surface of the image carrier; an electrostatic image forming unit that forms an electrostatic image on the charged surface of the image carrier; a developing unit that includes a container and a supply member and develops the electrostatic image formed on the surface of the image carrier to form a toner image, the container containing an electrostatic image developer that contains an electrostatic image developing toner and a carrier, the supply member having in a circumferential surface thereof plural grooves extending in a direction intersecting a direction of rotation of the supply member, the electrostatic image being developed with the electrostatic image developer; a transfer unit that transfers the toner image formed on the surface of the image carrier to a recording medium; and a fixing unit that fixes the toner image transferred to the recording medium. The electrostatic image developing toner satisfies the following inequalities: (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：US10175612B2
公开(公告)日：2019-01-08
申请号：US15788299
申请日：2017-10-19
申请人： FUJI XEROX CO., LTD.
发明人： Takafumi Koide , Masataka Kuribayashi , Masahiro Uchida , Yusuke Fukuda , Katsuyuki Kitajima , Koji Funaba , Kana Yoshida , Satomi Hara
摘要： An image forming apparatus includes a transfer unit which includes a belt member having an outer peripheral surface which contacts an image holding member, and a transfer member, and the belt member is wound around both of the image holding member and the transfer member, wherein a toner to be used includes a binder resin containing an amorphous resin and a crystalline resin and has specific physical properties described in the specification, and paraffin wax having a melting temperature of 60° C. to 80° C., and an absolute value of a difference between the melting temperature of the crystalline resin and the melting temperature of the paraffin wax is 10° C. or less.
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公开(公告)号：US09983517B2
公开(公告)日：2018-05-29
申请号：US15426824
申请日：2017-02-07
申请人： FUJI XEROX CO., LTD.
发明人： Takafumi Koide , Naoki Ota , Masataka Kuribayashi , Yusuke Fukuda , Yasuhisa Morooka , Katsuyuki Kitajima
CPC分类号： G03G15/162 , G03G9/08755 , G03G9/08797 , G03G15/161
摘要： An image forming apparatus includes a guide unit that guides at least one of an image holding member and an intermediate transfer member to a primary transfer position provided by a primary transfer unit such that a portion of the surface of the image holding member and a portion of the surface of the intermediate transfer member are disposed along with each other, wherein a toner contains a toner particle which contains a binder resin containing a crystalline polyester resin, a coloring agent and a releasing agent, and an external additive, and satisfies Expression: 2≤tan δP1≤2.5, wherein tan δP1 represents a maximum value of a mechanical loss tangent existing in a range where a complex elastic modulus is from 1×106 Pa to 1×108 Pa, which is measured at an angular frequency of 6.28 rad/sec and a strain amount of 0.3%.
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公开(公告)号：US09983494B2
公开(公告)日：2018-05-29
申请号：US15426530
申请日：2017-02-07
申请人： FUJI XEROX CO., LTD.
发明人： Yusuke Fukuda , Masataka Kuribayashi , Naoki Ota , Takafumi Koide , Katsuyuki Kitajima , Yasuhisa Morooka
CPC分类号： G03G9/0821 , G03G5/14713 , G03G9/08755 , G03G21/0011
摘要： An image forming apparatus includes an electrophotographic photoreceptor having an overcoat layer and a cleaning unit that includes a cleaning blade, a tip of which contacts with the electrophotographic photoreceptor, wherein the toner contains a toner particle which contains a binder resin containing a crystalline polyester resin, a colorant and a release agent, and an external additive, and the toner satisfies the following Expression: 2≤tan δP1≤2.5, wherein tan δP1 represents a maximum value of a mechanical loss tangent existing in a range where a complex elastic modulus is from 1×106 Pa to 1×108 Pa, which is measured at an angular frequency of 6.28 rad/sec and a strain amount of 0.3%.
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公开(公告)号：US09058001B2
公开(公告)日：2015-06-16
申请号：US13935844
申请日：2013-07-05
申请人： FUJI XEROX CO., LTD.
发明人： Narumasa Sato , Eiji Nakai , Katsuyuki Kitajima , Makoto Kamisaki , Toyofumi Inoue , Takafumi Koide , Masataka Kuribayashi , Yoshinari Ueno , Yoshifumi Eri
CPC分类号： G03G15/5029 , G03G15/657 , G03G2215/00949
摘要： An image forming apparatus includes a toner image forming unit that forms and continuously transfers a toner image based on image data onto a transported sheet from the front to the rear in a sheet transport direction as the sheet is transported, a fixing unit positioned downstream of the toner image forming unit in the transport direction and that fixes the transferred toner image onto the sheet, an image determining unit that determines whether the formed toner image is a scattering toner image that causes toner scattering during the transfer, and a speed controlling unit that controls, when it is determined that the toner image is a scattering toner image, a transport speed of the sheet and a transfer speed of the toner image to the sheet such that the speeds are slower than those when it is determined that the toner image is not a scattering toner image.
摘要翻译： 图像形成装置包括：调色剂图像形成单元，其在片材被输送时，在纸张传送方向上从基于图像数据的调色剂图像形成并连续地传送到纸张传送方向上的传送纸张;定影单元， 调色剂图像形成单元，其将转印的调色剂图像定影在片材上;图像确定单元，确定形成的调色剂图像是否是在转印期间引起调色剂飞散的散射调色剂图像;以及速度控制单元，其控制 ，当确定调色剂图像是散射调色剂图像时，片材的传送速度和调色剂图像的转印速度到片材，使得速度比确定调色剂图像时的速度慢 散射调色剂图像。
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公开(公告)号：US20210080869A1
公开(公告)日：2021-03-18
申请号：US16783454
申请日：2020-02-06
申请人： Fuji Xerox Co., Ltd.
IPC分类号： G03G15/08
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 and develops the electrostatic image with the electrostatic image developer, a transfer unit, a fixing unit, a replenishment toner container that includes a replenishment toner that is to be supplied into the developing unit and discharges the replenishment toner by rotation of the replenishment toner container, a replenishment toner container mounting unit that holds the replenishment toner container and rotates the replenishment toner container, and a toner supply pass that connects the replenishment toner container mounting unit to the developing unit. The replenishment 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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10.发明申请公开(公告)号：US20200292964A1
公开(公告)日：2020-09-17
申请号：US16549417
申请日：2019-08-23
申请人： FUJI XEROX CO., LTD.
IPC分类号： G03G15/08
摘要： An image forming apparatus includes a developing section that includes a container containing an electrostatic charge image developer including toner and a carrier and also includes a transporter, the transporter having a rotary shaft and helical blades on the outer circumferential surface of the rotary shaft with a phase shift therebetween, the helical blades having a break zone, a zone in which the helical blades are discontinuous along the axis of the rotary shaft; a transfer section; and a fixing section. The toner satisfies the following relations: (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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