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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：US09720356B2
公开(公告)日：2017-08-01
申请号：US14941019
申请日：2015-11-13
申请人： FUJI XEROX CO., LTD.
发明人： Naoki Ota , Katsuyuki Kitajima , Nagahito Ichijo
IPC分类号： G03G15/20
CPC分类号： G03G15/20 , G03G9/0821 , G03G9/0825 , G03G9/0827 , G03G9/08755 , G03G9/08782 , G03G15/2021
摘要： An image forming apparatus includes a developing unit that stores a developer containing a toner and develops an electrostatic charge image on a image holding member by the developer to form a toner image, a transfer unit that transfers the toner image on the image holding member onto a recording medium, and a fixing unit that performs an operation of heating and pressing twice or more to the toner image on the recording medium by at least one heating and pressing member which contacts with the toner image, wherein the 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 and a skewness in distribution of eccentricity B of the island portion is 0.75 to 0.95 and −1.10 to −0.50, respectively, and eccentricity B is defined in the specification.
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公开(公告)号：US10656558B1
公开(公告)日：2020-05-19
申请号：US16539135
申请日：2019-08-13
申请人： FUJI XEROX Co., Ltd.
IPC分类号： G03G15/08
摘要： An image forming apparatus includes an image carrier; a charging section that charges the surface of the image carrier; an electrostatic-charge-image-forming section that forms an electrostatic charge image on the charged surface of the image carrier; a developing section that contains toner for electrostatic charge image development and develops the electrostatic charge image on the surface of the image carrier into a toner image using the toner; a replenishment toner supplying section that supplies the toner to the developing section, the replenishment toner supplying section including a replenishment toner cartridge, the replenishment toner cartridge containing the toner, having a cap and a body, and detachably attached to the image forming apparatus, the cap being at a first axial end of the replenishment toner cartridge and having an outlet for the replenishment toner to be ejected therethrough, whereas the body having a ridged portion by which the toner inside is moved in the direction from a second axial end of the replenishment toner cartridge to the outlet as the body rotates; a transfer section that transfers the toner image formed on the surface of the image carrier to the surface of a recording medium; and a fixing section that fixes the toner image transferred to the surface of the recording medium. The toner satisfying 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：US10180650B2
公开(公告)日：2019-01-15
申请号：US15660060
申请日：2017-07-26
申请人： FUJI XEROX CO., LTD.
发明人： Masataka Kuribayashi , Masahiro Uchida , Takafumi Koide , Yusuke Fukuda , Katsuyuki Kitajima , Koji Funaba , Satomi Hara , Kana Yoshida
摘要： An image forming apparatus includes an image holding member, a charging unit; an electrostatic image forming unit, a development unit, a transfer unit; a fixing unit, and a cleaning unit. A toner for electrostatic image development contains a binder resin containing an amorphous resin and a crystalline resin, and paraffin wax. The toner has a volume-average particle diameter of 6 μm to 9 μm, a shape factor SF1 of 140 or more, and a toluene insoluble content within a range of 25% to 40%. The melting temperature of the paraffin wax is 60° C. or more and 80° C. or less. The absolute value of difference between the melting temperature of the crystalline resin and the melting temperature of the paraffin is 10° C. or less.
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公开(公告)号：US10152008B2
公开(公告)日：2018-12-11
申请号：US15892942
申请日：2018-02-09
申请人： FUJI XEROX CO., LTD.
发明人： Kana Yoshida , Masataka Kuribayashi , Masahiro Uchida , Takafumi Koide , Yusuke Fukuda , Katsuyuki Kitajima , Koji Funaba , Satomi Hara
摘要： An image forming apparatus includes an image holding member, a charging unit, an electrostatic charge image forming unit, a developing unit, a transfer unit, a fixing unit including a fixing belt, a pressurizing rotator that forms a nip by pressurizing an outer peripheral surface of the fixing belt, a sliding member that slides on an inner peripheral surface of the fixing belt in the nip, and a pressing member that presses the fixing belt in the direction of the pressurizing rotator, 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：US09964877B2
公开(公告)日：2018-05-08
申请号：US15422840
申请日：2017-02-02
申请人： FUJI XEROX CO., LTD.
发明人： Masataka Kuribayashi , Naoki Ota , Takafumi Koide , Yusuke Fukuda , Katsuyuki Kitajima , Yasuhisa Morooka
CPC分类号： G03G9/0827 , G03G9/0819 , G03G9/08711 , G03G9/08755 , G03G9/0918 , G03G15/00 , 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 and a tip of the cleaning blade contacts with the photoreceptor toward the direction opposite to the rotation direction, wherein the toner particle contains a crystalline polyester resin, an average circularity of the toner particles is from 0.955 to 0.971, a content ratio of the toner particles having a particle diameter of 4.5 μm or more and less than 7.5 μm and a circularity of 0.980 or more is from 16% by number to 40% by number, and a content ratio of the toner particles having a particle diameter of 7.5 μm or more and less than 15 μm and a circularity of 0.900 or more and less than 0.940 is 3% by number or less.
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公开(公告)号：US09244392B2
公开(公告)日：2016-01-26
申请号：US14332940
申请日：2014-07-16
申请人： FUJI XEROX CO., LTD.
发明人： Masataka Kuribayashi , Takafumi Koide , Katsuyuki Kitajima , Makoto Kamisaki , Yasuhisa Morooka
CPC分类号： G03G15/1665 , G03G15/657 , G03G15/6585
摘要： An image forming apparatus includes a latent image forming unit that forms a latent image on a photoreceptor, a developing unit that accommodates a developer containing flake shape toner particles and develops the latent image using the developer to form a toner image on a surface of the photoreceptor, a transfer unit, a bias applying unit, and a fixing unit, wherein the flake shape toner particles have an average major axis length of from 7 μm to 20 μm and an average thickness of from 1 μm to 3 μm and contain a flake shape metallic pigment.
摘要翻译： 图像形成装置包括在感光体上形成潜像的潜像形成单元，容纳含有片状调色剂颗粒的显影剂的显影单元，并使用显影剂显影潜像以在感光体的表面上形成调色剂图像 转印单元，偏压施加单元和定影单元，其中片状调色剂颗粒的平均长轴长度为7μm至20μm，平均厚度为1μm至3μm，并且包含片状 金属颜料。
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公开(公告)号：US20140112677A1
公开(公告)日：2014-04-24
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
IPC分类号： G03G15/16
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：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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