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    IMAGE FORMING APPARATUS
    2.
    发明申请
    IMAGE FORMING APPARATUS 有权
    图像形成装置

    公开(公告)号：US20130108287A1

    公开(公告)日：2013-05-02

    申请号：US13659441

    申请日：2012-10-24

    申请人： Toru HAYASE ,  Naoki YAMAMOTO

    发明人： Toru HAYASE ,  Naoki YAMAMOTO

    IPC分类号： G03G15/20

    CPC分类号： G03G15/2042 ,  G03G2215/2035

    摘要： Image forming apparatus including: fixing device thermally fixing unfixed image on recording sheet by causing recording sheet to pass through nip formed by pressing member pressing against outer circumferential surface of heating rotating body having resistance heating layer; temperature measuring unit measuring temperatures of resistance heating layer in measurement regions set by sectioning outer circumferential surface of heating rotating body along rotational axis; information obtaining unit obtaining information indicating temperature changes in measurement regions in one rotational period of heating rotating body, by sampling measured temperatures; and abnormality judging unit judging whether abnormality has occurred in resistance heating layer based on result of comparison of information that is made between measurement regions in each combination, wherein one or more combinations of measurement regions have been set for each of paper-passing and non-paper-passing regions in nip by using all measurement regions in each of paper-passing and non-paper-passing regions.

    摘要翻译： 图像形成装置包括：通过使记录片材通过按压部件压靠形成的辊隙的方式将定影未定影图像定影在记录片材上，该加压部件按压具有电阻加热层的加热旋转体的外周面; 温度测量单元，通过沿着加热旋转体的外周面切割而设置的测量区域中的电阻加热层的温度; 信息获取单元通过采样测量的温度来获取指示加热旋转体的一个旋转周期中的测量区域的温度变化的信息; 以及异常判定单元，基于在每个组合中的测量区域之间进行的信息的比较的结果来判断电阻加热层中是否发生异常，其中针对每个组合中的每一个设置了一个或多个测量区域的组合， 通过使用每个纸张通过区域和非纸张通过区域中的所有测量区域，在压区中的通纸区域。

    FIXING DEVICE AND IMAGE FORMING APPARATUS
    3.
    发明申请
    FIXING DEVICE AND IMAGE FORMING APPARATUS 有权
    固定装置和图像形成装置

    公开(公告)号：US20110299901A1

    公开(公告)日：2011-12-08

    申请号：US13112325

    申请日：2011-05-20

    申请人： Noboru YONEKAWA ,  Mamoru FUKAYA ,  Naoki YAMAMOTO ,  Toru HAYASE

    发明人： Noboru YONEKAWA ,  Mamoru FUKAYA ,  Naoki YAMAMOTO ,  Toru HAYASE

    IPC分类号： G03G15/20

    CPC分类号： G03G15/2053 ,  G03G2215/2025

    摘要： A fixing device for thermally fixing an unfixed image formed on a recording sheet by passing the recording sheet through a fixing nip. The fixing device has: a heat-generating endless belt having, on a circumferential surface thereof, a sheet passing area through which the recording sheet passes; a first pressure member disposed inside a running path of the endless belt; and a second pressure member disposed to press the endless belt against the first pressure member from outside the running path to form the fixing nip. The endless belt includes: a resistive heat layer that generates heat upon receiving electric current; and a pair of electrode layers that receive electric current. The electrode layers flank the sheet passing area. The resistive heat layer is in contact with the electrode layers at a different one of end faces opposing each other in a width direction of the resistive heat layer.

    摘要翻译： 一种定影装置，用于通过使记录纸通过定影辊隙来热定影在记录纸上形成的未定影图像。 定影装置具有：发热环形带，其周面上具有记录纸通过的纸张通过区域; 设置在所述环形带的行进路径内的第一压力构件; 以及第二压力构件，其设置成从行进路径外部将环形带压靠第一压力构件以形成定影辊隙。 环形带包括：在接收电流时产生热量的电阻热层; 以及一对接收电流的电极层。 电极层位于片材通过区域的两侧。 电阻加热层在电阻热层的宽度方向上彼此相对的不同的一个端面处与电极层接触。

    FIXING DEVICE AND IMAGE FORMING APPARATUS
    4.
    发明申请
    FIXING DEVICE AND IMAGE FORMING APPARATUS 有权
    固定装置和图像形成装置

    公开(公告)号：US20110222932A1

    公开(公告)日：2011-09-15

    申请号：US13034224

    申请日：2011-02-24

    申请人： Toru HAYASE ,  Naoki Yamamoto ,  Noboru Yonekawa ,  Mamoru Fukaya

    发明人： Toru HAYASE ,  Naoki Yamamoto ,  Noboru Yonekawa ,  Mamoru Fukaya

    IPC分类号： G03G15/20

    CPC分类号： G03G15/2064 ,  G03G2215/2035

    摘要： A fixing device includes: a heating rotary member having a heating layer generating heat upon current application; a pressurizing rotary member brought into pressure-contact with an outer circumferential surface of the heating rotary member to form fixing nip, through which a sheet on which unfixed toner image is formed passes for heat fixing; circular electrodes that are circumferentially formed at two respective positions sandwiching a sheet passing region therebetween, on the outer circumferential surface, and feed electrical power to the heating layer, the electrodes are each metallic and formed of at least two electrode layers including a first electrode layer layered directly on the heating layer and a second electrode layer as an outermost layer, linear expansion coefficient difference between the first layer and the heating layer is smaller than that between the second layer and the heating layer, and the second layer is more oxidation-resistant than the first layer.

    摘要翻译： 定影装置包括：加热旋转构件，其具有在施加电流时产生热量的加热层; 加压旋转部件与加热旋转部件的外周面压力接触，形成定影辊隙，通过该固定辊隙，形成有未定影调色剂图像的纸张通过热定影; 圆周电极，其周向形成在夹着片材通过区域的两个相应位置处，在外周面上，并且供给到加热层的电力，电极各自是金属的，并且由至少两个电极层形成，包括第一电极层 直接在加热层上分层，第二电极层为最外层，第一层和加热层之间的线膨胀系数差小于第二层和加热层之间的线膨胀系数差，第二层更耐氧化 比第一层。

    FIXING DEVICE AND IMAGE FORMING DEVICE
    5.
    发明申请
    FIXING DEVICE AND IMAGE FORMING DEVICE 有权
    固定装置和图像形成装置

    公开(公告)号：US20100303526A1

    公开(公告)日：2010-12-02

    申请号：US12780000

    申请日：2010-05-14

    申请人： Toru HAYASE

    发明人： Toru HAYASE

    IPC分类号： G03G15/20

    CPC分类号： G03G15/206 ,  G03G2215/2041

    摘要： Fixing device for fixing image onto recording sheet by applying heat and pressure thereto while it passes through fixing nip, including: pressure belt movable in revolving motion; fixing roller; and pressure member for pressing inner surface of the belt toward the roller. The fixing nip is formed between the roller and belt while elastically deformable surface of the roller is contacted with the belt by pressure applied by pressure member to the belt. The pressure member includes: elastic member for applying pressures so that greater pressure is applied to center of the roller than to ends, the center and ends being along axis direction of the roller; and hard member that is disposed parallel to the elastic member on downstream side thereof in revolving direction of the belt and applies pressures to the roller so that greater pressure is applied to end0s than to center.

    摘要翻译： 固定装置，用于在图像通过定影辊隙的同时通过施加热和压力将图像定影到记录纸上，包括：能够以旋转运动的压力带; 定影辊; 以及用于将带的内表面朝向辊压紧的压力构件。 在辊和带之间形成定影辊隙，同时辊的弹性变形表面通过压力构件对带施加的压力与带接触。 压力构件包括：用于施加压力的弹性构件，使得对辊的中心施加更大的压力而不是端部，中心和端部沿着辊的轴线方向; 以及硬质构件，其在带的旋转方向上在其下游侧平行于弹性构件设置，并且向辊施加压力，使得对端部0施加比中心更大的压力。

    DEVELOPING DEVICE AND IMAGE FORMING APPARATUS
    6.
    发明申请
    DEVELOPING DEVICE AND IMAGE FORMING APPARATUS 有权
    开发设备和图像形成装置

    公开(公告)号：US20090311011A1

    公开(公告)日：2009-12-17

    申请号：US12480070

    申请日：2009-06-08

    申请人： Toru HAYASE ,  Yuusuke Okuno ,  Shigeki Yamamoto ,  Kuniya Matsuura ,  Hiroshi Murasaki

    发明人： Toru HAYASE ,  Yuusuke Okuno ,  Shigeki Yamamoto ,  Kuniya Matsuura ,  Hiroshi Murasaki

    IPC分类号： G03G15/09

    CPC分类号： G03G15/0921 ,  G03G2215/0609

    摘要： The present invention provides a developing device which is capable of suppressing the generation of a fogging phenomenon and deposition of carrier particles to an electrostatic latent image carrier and developing the electrostatic latent image efficiently, the device comprising a development sleeve and a magnet body onto which the sleeve is fitted, and using a two-component developer. An angular position which indicates the peak value of the magnetic flux density in the normal direction produced by a development pole of the magnet body is shifted downstream from the center position of the development pole in the direction of movement of the surface of a photosensitive member in a development region. The present invention also provides an image forming apparatus which can form high-quality images with reduced noise such as fogging by mounting the developing device.

    摘要翻译： 本发明提供一种显影装置，其能够抑制雾化现象的产生和载体颗粒沉积到静电潜像载体上并有效地显影静电潜像，该装置包括显影套筒和磁体， 套筒，并使用双组分显影剂。 指示由磁体的显影极产生的在正常方向上的磁通密度的峰值的角度位置在显影极的中心位置的下游沿着感光构件的表面的移动方向 一个开发区域。 本发明还提供一种图像形成装置，其可以通过安装显影装置来形成具有降低的噪声（例如起雾）的高质量图像。