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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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2.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：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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公开(公告)号：US10466607B2
公开(公告)日：2019-11-05
申请号：US15943268
申请日：2018-04-02
申请人： FUJI XEROX CO., LTD.
发明人： Takafumi Koide , Masataka Kuribayashi , Yusuke Fukuda , Katsuyuki Kitajima , Teppei Yawada , Shota Oshima , Masahiro Uchida
摘要： An image forming apparatus includes an image holding member, a charging device that charges a surface of the image holding member, an electrostatic charge image forming device that forms an electrostatic charge image on the charged surface of the image holding member, a developing device that has an electrostatic charge image developer containing an electrostatic charge image developing toner and that develops the electrostatic charge image to form a toner image on the surface of the image holding member, and a transfer device that transfers the toner image onto a recording medium, wherein the transfer device includes a belt member and a transfer member, the belt member has an outer surface that contacts the image holding member, and the belt member is winding around the image holding member and the transfer member; and the toner has a binder resin containing an amorphous polyester resin.
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公开(公告)号：US10120295B2
公开(公告)日：2018-11-06
申请号：US15423343
申请日：2017-02-02
申请人： FUJI XEROX CO., LTD.
发明人： Naoki Ota , Masataka Kuribayashi , Takafumi Koide , Yusuke Fukuda , Katsuyuki Kitajima , Yasuhisa Morooka
摘要： An image forming apparatus includes a fixing unit that includes a heating and pressurizing member, and fixes the toner image by performing the operation of heating and pressurizing on the toner image on a recording medium twice or more times with the heating and pressurizing member, 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 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 distortion amount of 0.3%.
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公开(公告)号：US10564565B1
公开(公告)日：2020-02-18
申请号：US16371132
申请日：2019-04-01
申请人： FUJI XEROX CO., LTD.
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 latent image forming unit that forms an electrostatic latent image on the charged surface of the image holding member, a developing unit that develops the electrostatic latent image to form a toner image, a transferring unit that transfers the toner image to a first side of a recording medium, a fixing unit that allows the recording medium having the transferred toner image to pass through a nipping region to fix the toner image, a first charging unit that faces the first side of the recording medium and that charges particles, and a second charging unit that charges a second side of the recording medium to the opposite polarity to the charged particles after the recording medium passes through the nipping region.
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