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118 条记录 (耗时 0.036 秒)

    Image forming apparatus
    71.
    发明授权
    Image forming apparatus 失效

    公开(公告)号：US06669189B2

    公开(公告)日：2003-12-30

    申请号：US10054993

    申请日：2002-01-25

    申请人： Takashi Seto ,  Yasushi Nakazato ,  Seiji Hoshino ,  Hiromichi Matsuda

    发明人： Takashi Seto ,  Yasushi Nakazato ,  Seiji Hoshino ,  Hiromichi Matsuda

    IPC分类号： B65H2900

    CPC分类号： G03G15/234 ,  B65H29/60 ,  B65H2301/33312 ,  B65H2301/3332 ,  B65H2801/06

    摘要： An image forming apparatus of the present invention includes a conveyance path extending from a sheet tray to an image forming section. A switchback path with a reversing device is connected to the intermediate portion of the conveyance path for switching back a sheet thereon. The switchback path reduces an interval between consecutive sheets being conveyed in the apparatus for thereby enhancing the productivity of image formation. In addition, the switchback path switches back a sheet being conveyed via a refeed path and the above conveyance path in a duplex print mode, thereby obviating the need of an exclusive switchback path for the duplex print mode. The apparatus is reduced in thickness despite the presence of the switchback path.

    Fixing device and image forming apparatus including nip former of specific surface roughness
    74.
    发明授权
    Fixing device and image forming apparatus including nip former of specific surface roughness 有权

    公开(公告)号：US10942475B2

    公开(公告)日：2021-03-09

    申请号：US16860221

    申请日：2020-04-28

    申请人： Ippei Fujimoto ,  Yoshiki Yamaguchi ,  Takashi Seto ,  Hiroyuki Shimada

    发明人： Ippei Fujimoto ,  Yoshiki Yamaguchi ,  Takashi Seto ,  Hiroyuki Shimada

    IPC分类号： G03G15/20

    摘要： A fixing device includes a fixing rotator that rotates and includes an inner face. A pressure rotator is disposed opposite the fixing rotator and rotates. A nip former sandwiches the fixing rotator together with the pressure rotator to form a nip between the fixing rotator and the pressure rotator. The nip former includes an outer face disposed opposite the inner face of the fixing rotator. The inner face of the fixing rotator and the outer face of the nip former sandwich a lubricant. At least one of the inner face of the fixing rotator and the outer face of the nip former includes a projection having a volume smaller than 0.3 ml/m2 and a recess having a spatial volume greater than 0.08 ml/m2. The volume and the spatial volume are three-dimensional surface roughness parameters, respectively, defined by the International Organization for Standardization 25178 standard in an initial state before the fixing rotator rotates.

    Image forming apparatus and method of arranging sheet detector
    80.
    发明授权
    Image forming apparatus and method of arranging sheet detector 有权
    图像形成装置和纸张检测器的布置方法

    公开(公告)号：US09176438B2

    公开(公告)日：2015-11-03

    申请号：US14193260

    申请日：2014-02-28

    申请人： Ryota Yamashina ,  Takumi Waida ,  Hiroshi Seo ,  Takashi Seto

    发明人： Ryota Yamashina ,  Takumi Waida ,  Hiroshi Seo ,  Takashi Seto

    IPC分类号： G03G15/00 ,  G03G15/20

    CPC分类号： G03G15/2046 ,  G03G15/5029 ,  G03G15/6588 ,  G03G2215/00599 ,  G03G2215/00603 ,  G03G2215/00751

    摘要： An image forming apparatus includes an image forming device to form a toner image on a recording medium under a prescribed image forming condition, a fixing device to fix the toner image borne on the recording medium thereonto by heating the recording medium based on target fixing temperature, and a detector to detect a type of recording medium. The type is used in setting at least one of the image forming condition and the target fixing temperature. The inequality Tb>Ta is established when Ta represents a time period needed to reach a setting of fixing temperature allocated to the recording medium with its tip detected by the detector after detection of the tip and Tb represents a time period needed for the recording medium with its tip detected by the detector to reach the fixing device after detection of the tip.

    摘要翻译： 图像形成装置包括在规定的图像形成条件下在记录介质上形成调色剂图像的图像形成装置，通过基于目标定影温度加热记录介质将调色剂图像承载在其上的定影装置， 以及检测器，用于检测记录介质的类型。 该类型用于设置图像形成条件和目标定影温度中的至少一个。 当Ta表示在检测到尖端后由检测器检测到的尖端到达分配给记录介质的定影温度的设置所需的时间段时，建立不等式Tb> Ta，Tb表示记录介质所需的时间段， 其检测器的尖端在检测到尖端后到达定影装置。