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    • 12. 发明授权
    • Image forming apparatus
    • 图像形成装置
    • US6067435A
    • 2000-05-23
    • US161215
    • 1998-09-28
    • Setsuo SogaHideo YuJun OkamotoYasuhiro Kohira
    • Setsuo SogaHideo YuJun OkamotoYasuhiro Kohira
    • G03G15/01G03G15/16
    • G03G15/0131G03G15/1605G03G2215/0174G03G2215/1623
    • An image forming apparatus of the type transferring a toner image from a photoconductive element to a recording medium by way of an intermediate transfer belt is disclosed. Toner images of different colors are sequentially transferred from the photoconductive element to the intermediate transfer belt one above the other, forming a full-color image. When the full-color image is to be transferred from the intermediate transfer belt to a paper or similar recording medium, a secondary transfer belt is brought into contact with the portion of the intermediate transfer belt contacting a secondary transfer roller. As a result, the secondary transfer belt deforms complementarily to the shape of the secondary transfer roller, forming a nip between it and the intermediate transfer belt. In this condition, the secondary transfer belt contacts the intermediate transfer belt evenly and prevents an excessive pressure from acting locally on the toner image existing on the intermediate transfer belt.
    • 公开了一种通过中间转印带将调色剂图像从感光元件转印到记录介质上的图像形成装置。 不同颜色的调色剂图像从感光元件依次转印到中间转印带上,形成全色图像。 当将全色图像从中间转印带传送到纸或类似记录介质时,二次转印带与接触二次转印辊的中间转印带的部分接触。 结果,二次转印带与二次转印辊的形状互补地变形,在其与中间转印带之间形成辊隙。 在这种情况下,二次转印带均匀地接触中间转印带,并防止过度的压力局部地作用在中间转印带上存在的调色剂图像上。
    • 15. 发明授权
    • Image fixing method
    • 图像定影方法
    • US4813868A
    • 1989-03-21
    • US112089
    • 1987-10-26
    • Setsuo Soga
    • Setsuo Soga
    • G03G15/01G03G13/01G03G13/20G03G15/20H05B3/10F27B9/28
    • G03G13/013G03G13/20
    • A heating roller having a surface layer of Teflon and a pressing roller having a surface layer of an elastomeric material are held rotatably against each other for fixing a full-color toner image to a toner carrier therebetween. The ratio (1/V) between the nip width 1 of the heating and pressing rollers and the peripheral speed V of the rollers is selected to be at least 0.06, and the pressure of contact per unit area between the heating and pressing rollers at their nip region is selected to be at least 7 kg/cm.sup.2, for increasing a temperature range corresponding to the rubber range of toners used. The toners which have a small molecular weight and a small molecular weight distribution are prevented from being offset before the toners are fixed. Teflon with desirable features can therefore be used as the surface layer of the heating roller.
    • 具有特氟隆表面层的加热辊和具有弹性材料表面层的加压辊彼此可旋转地保持,用于将全色调色剂图像固定在其间的调色剂载体上。 加热辊和挤压辊的辊隙宽度1与辊的圆周速度V之间的比率(1 / V)选择为至少0.06,并且加热辊和加压辊之间的每单位面积的接触压力 辊隙区域选择为至少7kg / cm 2,用于增加对应于所使用的调色剂的橡胶范围的温度范围。 在调色剂固定之前,防止具有小分子量和小分子量分布的调色剂被抵消。 因此,具有期望特征的特氟隆可以用作加热辊的表面层。