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    IMAGE FORMING APPARATUS
    2.
    发明申请
    IMAGE FORMING APPARATUS 审中-公开

    公开(公告)号：US20200073296A1

    公开(公告)日：2020-03-05

    申请号：US16372416

    申请日：2019-04-02

    Applicant: FUJI XEROX CO., LTD.

    Inventor： Katsuyuki KITAJIMA ,  Masataka KURIBAYASHI ,  Takafumi KOIDE ,  Teppei YAWADA ,  Shota OSHIMA

    IPC: G03G15/20 ,  G03G21/10 ,  G03G9/087 ,  G03G9/08

    Abstract: 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 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 latent 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 to a recording medium, a fixing unit that includes two members of which the outer surfaces are in contact with each other to form a nipping region and of which at least one member is a belt member and that allows the recording medium having the transferred toner image to pass through the nipping region to fix the toner image to the recording medium, a particle charging unit that is disposed in the vicinity of the nipping region and upstream of the nipping region in the transport direction of the recording medium so as to face the toner-image-formed side of the recording medium and that charges particles, and a particle collecting unit that is disposed near the particle charging unit and that is charged to the opposite polarity to the charged particles.

    IMAGE FORMING APPARATUS
    3.
    发明申请
    IMAGE FORMING APPARATUS 审中-公开

    公开(公告)号：US20180275575A1

    公开(公告)日：2018-09-27

    申请号：US15895200

    申请日：2018-02-13

    Applicant: FUJI XEROX CO., LTD.

    Inventor： Masahiro UCHIDA ,  Masataka KURIBAYASHI ,  Takafumi KOIDE ,  Yusuke FUKUDA ,  Katsuyuki KITAJIMA ,  Satomi HARA ,  Kana YOSHIDA ,  Koji FUNABA

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

    CPC classification number: G03G9/08 ,  G03G9/087 ,  G03G15/20

    Abstract: An image forming apparatus includes a fixing unit including a fixing belt, a pressurizing rotator that forms a nip portion between the fixing belt and the pressurizing rotator by pressurizing an outer peripheral surface of the fixing belt, a first heating rotator that is provided so as to contact an inner peripheral surface of the fixing belt in the nip portion and heats the fixing belt, and a second heating unit that heats the fixing belt separately from the first heating rotator, wherein a toner to be used has physical properties described in the specification and includes an amorphous resin, a crystalline resin, and paraffin wax having a melting temperature of 60° C. to 80° C., and an absolute value of a difference in a melting temperature between the crystalline resin and the paraffin wax is 10° C. or less.

    IMAGE FORMING APPARATUS
    4.
    发明申请
    IMAGE FORMING APPARATUS 审中-公开

    公开(公告)号：US20200064760A1

    公开(公告)日：2020-02-27

    申请号：US16362702

    申请日：2019-03-25

    Applicant: FUJI XEROX CO., LTD.

    Inventor： Tatsuhiro IGARASHI ,  Naoki OTA ,  Yusuke FUKUDA ,  Makoto KAMISAKI ,  Yasuhisa MOROOKA ,  Jun SEKIYA ,  Teppei YAWADA ,  Masataka KURIBAYASHI ,  Takafumi KOIDE ,  Katsuyuki KITAJIMA ,  Shota OSHIMA

    IPC: G03G15/20 ,  G03G15/16

    Abstract: 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.

    IMAGE FORMING APPARATUS
    5.
    发明申请
    IMAGE FORMING APPARATUS 审中-公开

    公开(公告)号：US20190294066A1

    公开(公告)日：2019-09-26

    申请号：US16125854

    申请日：2018-09-10

    Applicant: FUJI XEROX CO., LTD.

    Inventor： Takafumi KOIDE ,  Masataka KURIBAYASHI ,  Yusuke FUKUDA ,  Katsuyuki KITAJIMA ,  Teppei YAWADA ,  Shota OSHIMA

    IPC: G03G9/087 ,  G03G9/08 ,  G03G15/08

    Abstract: An image forming apparatus includes an image holding member, a developing device, and a supplying device including a storage unit and a transport unit, wherein the storage unit stores toner and includes a bag having a flexible material, the transport unit uses suction pressure to transport the toner from the storage unit and supplies to the developing device, the toner contains an amorphous polyester resin, a toner particles has a weight average molecular weight Mw and a number average molecular weight Mn, the weight average molecular weight Mw is in the range of 25,000 to 60,000, the ratio Mw/Mn is in the range of 5 to 10, the ratio (P2/P1) of the peak height of the absorption peak of the toner particles at a wavenumber of 820 cm−1 (P2) to the peak height of the absorption peak at a wavenumber of 720 cm−1 (P1) is 0.4 or less, and the ratio (P3/P1) of the peak height of the absorption peak of the toner particles at a wavenumber of 1500 cm−1 (P3) to the peak height of the absorption peak at a wavenumber of 720 cm−1 (P1) is 0.6 or less.

    IMAGE FORMING APPARATUS WITH CLEANING UNIT
    6.
    发明申请
    IMAGE FORMING APPARATUS WITH CLEANING UNIT 有权

    公开(公告)号：US20190286045A1

    公开(公告)日：2019-09-19

    申请号：US16109793

    申请日：2018-08-23

    Applicant: FUJI XEROX CO.,LTD.

    Inventor： Masataka KURIBAYASHI ,  Takafumi KOIDE ,  Yusuke FUKUDA ,  Katsuyuki KITAJIMA ,  Makoto KAMISAKI ,  Teppei YAWADA ,  Shota OSHIMA

    IPC: G03G21/00 ,  G03G15/08 ,  G03G9/087

    Abstract: An image forming apparatus includes an image holding member, a charging unit, an electrostatic charge image forming unit, a developing unit, a transfer unit, and a cleaning unit having a cleaning blade that is in contact with the surface of the image holding member to clean the surface of the image holding member, wherein in the cleaning device, a variation in a load applied by the cleaning blade to the image holding member in a slide test is 1.5 gf/mm or less, wherein in the slide test, an image holding member which has a diameter of 30 mm and with which the cleaning blade is in contact at a contact angle of 23° and a pressing pressure of 4.0 gf/mm is rotated 100,000 times at a rotational speed of 175 mm/sec to slide the cleaning blade.

    IMAGE FORMING APPARATUS
    7.
    发明申请
    IMAGE FORMING APPARATUS 审中-公开

    公开(公告)号：US20180275574A1

    公开(公告)日：2018-09-27

    申请号：US15892942

    申请日：2018-02-09

    Applicant: FUJI XEROX CO., LTD.

    Inventor： Kana YOSHIDA ,  Masataka KURIBAYASHI ,  Masahiro UCHIDA ,  Takafumi KOIDE ,  Yusuke FUKUDA ,  Katsuyuki KITAJIMA ,  Koji FUNABA ,  Satomi HARA

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

    CPC classification number: G03G9/08 ,  G03G9/087 ,  G03G15/2028 ,  G03G15/2053

    Abstract: 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.

    IMAGE FORMING APPARATUS
    9.
    发明申请
    IMAGE FORMING APPARATUS 审中-公开

    公开(公告)号：US20190086827A1

    公开(公告)日：2019-03-21

    申请号：US15943268

    申请日：2018-04-02

    Applicant: FUJI XEROX CO., LTD.

    Inventor： Takafumi KOIDE ,  Masataka KURIBAYASHI ,  Yusuke FUKUDA ,  Katsuyuki KITAJIMA ,  Teppei YAWADA ,  Shota OSHIMA ,  Masahiro UCHIDA

    IPC: G03G9/00 ,  G03G9/087 ,  G03G9/08

    CPC classification number: G03G9/08755 ,  G03G9/0821 ,  G03G9/0823 ,  G03G9/08795 ,  G03G9/08797 ,  G03G15/08 ,  G03G15/1605

    Abstract: 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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