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    • 53. 发明申请
    • IMAGE FORMING APPARATUS
    • 图像形成装置
    • US20090269109A1
    • 2009-10-29
    • US12390569
    • 2009-02-23
    • Naoyuki IshidaAkihiro KondoYuzuru NanjoSyoukou GonKenichi KasamaEiji Nakajima
    • Naoyuki IshidaAkihiro KondoYuzuru NanjoSyoukou GonKenichi KasamaEiji Nakajima
    • G03G15/20
    • G03G15/2039G03G2215/2032
    • An image forming apparatus includes an image forming unit and a fixing unit. The fixing unit includes a heating member; a coil arranged along an outer surface of the heating member for generating a magnetic field for induction heating the heating member; a core arranged to face the heating member with the coil located therebetween in order to form a magnetic path around the coil and made of a magnetic material; a shielding member arranged near the magnetic path generated by the coil, including a closed frame portion and made of a nonmagnetic metal; and a magnetic shielding portion for displacing the shielding member between a retracted position for permitting a magnetic flux to pass along a frame surface virtually formed inside the closed frame portion and a shielding position for shielding magnetism by the penetration of a magnetic flux inside the frame surface.
    • 图像形成装置包括图像形成单元和定影单元。 定影单元包括加热构件; 沿加热构件的外表面布置的线圈,用于产生用于感应加热加热构件的磁场; 芯部,其布置成面对加热构件,线圈位于它们之间,以形成围绕线圈并由磁性材料制成的磁路; 屏蔽构件,布置在由线圈产生的磁路附近,包括闭合框架部分并由非磁性金属制成; 以及磁屏蔽部分,用于使屏蔽构件在用于允许磁通量实质上形成在闭合框架部分内部的框架表面的缩回位置之间移位,以及屏蔽位置,用于通过框架表面内的磁通量的穿透来屏蔽磁性 。
    • 54. 发明申请
    • IMAGE FORMING APPARATUS
    • 图像形成装置
    • US20090245902A1
    • 2009-10-01
    • US12393068
    • 2009-02-26
    • Syoukou GonYuzuru NanjoAkihiro KondoEiji NakajimaNaoyuki IshidaKenichi Kasama
    • Syoukou GonYuzuru NanjoAkihiro KondoEiji NakajimaNaoyuki IshidaKenichi Kasama
    • G03G15/20
    • G03G15/2064G03G2215/2032
    • An image forming apparatus is provided with an image forming station and a fixing unit including a heating member. The fixing unit includes a coil for generating a magnetic field for induction heating the heating member; a first core arranged to face the heating member with the coil located therebetween; a bar-shaped second core including a cut-off portion and arranged in a magnetic path between the first core and the heating member, when seen in a magnetic field generation direction by the coil, to form the magnetic path together with the first core; and a magnetic adjusting mechanism for changing the posture of the second core between a first posture for guiding a magnetic field by retracting the cut-off portion from the magnetic path and a second posture for increasing magnetic resistance by locating the cut-off portion in the magnetic path by rotating the second core about an axis thereof.
    • 图像形成装置设置有图像形成站和包括加热构件的定影单元。 定影单元包括用于产生用于感应加热加热构件的磁场的线圈; 布置成面对加热构件的第一芯,线圈位于其间; 当在线圈的磁场产生方向上看时,包括截止部分并且布置在第一芯体和加热构件之间的磁路中的条形第二芯体与第一芯体一起形成磁路; 以及磁调节机构,用于通过将所述切断部从所述磁路中缩回来引导磁场的第一姿态和用于通过将所述切断部位定位在所述磁路中的所述切断部分来增加磁阻的第二姿态来改变所述第二芯的姿态 通过使第二芯绕其轴线旋转。
    • 59. 发明授权
    • Paper transport mechanism for use in an image forming apparatus
    • 用于图像形成装置的纸张传送机构
    • US5689794A
    • 1997-11-18
    • US607410
    • 1996-02-28
    • Akihiro Kondo
    • Akihiro Kondo
    • B65H5/06B65H5/36B65H5/38G03G15/00
    • G03G15/6558B65H5/38B65H2407/10G03G15/1665
    • A paper transport mechanism is used in an image forming apparatus in which a toner image formed on a surface of a photosensitive member is transferred by an image transfer voltage generated by an image transfer unit onto paper which has been fed from a paper storage up to the photosensitive member through a paper path. The paper transport mechanism is provided with a first roller having a width not smaller than a maximum width of the paper stored in the paper storage, a group of second rollers aligned along the first roller for gripping the paper therebetween and transporting it toward the photosensitive member, each of the second rollers having a small width, and a non-undulation guide member provided immediately upstream of the first and second rollers for pressing the paper passing through the paper path against the first roller, the non-undulation guide member having a width not smaller than the maximum paper width. The paper fed from the paper storage is pressed against the first roller across the full paper width before the first and second rollers grip the paper. The paper is transported toward the photosensitive member without taking a wavy form so that the whole area of the paper comes into close contact with the photosensitive member. This helps prevent print image dropouts which may otherwise occur in a toner image transfer process.
    • 在图像形成装置中使用纸张传送机构,其中形成在感光构件的表面上的调色剂图像由图像转印单元产生的图像转印电压转印到已经从纸张存储器供给到纸张上的纸张上 感光构件通过纸张路径。 纸张传送机构设置有第一辊,其宽度不小于存储在纸储存器中的纸张的最大宽度,沿着第一辊对齐的一组第二辊,用于夹持纸张并将其传送到感光构件 每个第二辊具有小的宽度;以及非起伏引导构件,设置在第一和第二辊的紧邻上游,用于将通过纸张通道的纸张压靠在第一辊上,非起伏引导构件具有宽度 不小于最大纸张宽度。 在第一和第二辊抓住纸张之前,从纸存储器供给的纸张被压靠在整个纸张宽度上的第一辊子上。 纸张被传送到感光构件而不采取波浪形状,使得纸张的整个区域与感光构件紧密接触。 这有助于防止在调色剂图像转印过程中可能发生的打印图像丢失。