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    • 2. 发明授权
    • Development apparatus having a plurality of rolls rotated at particular
speeds
    • 具有以特定速度旋转的多个辊的显影装置
    • US5630201A
    • 1997-05-13
    • US607094
    • 1996-02-28
    • Katsuhiko SuzukiTakao UmedaMasayasu Anzai
    • Katsuhiko SuzukiTakao UmedaMasayasu Anzai
    • G03G13/09G03G15/09
    • G03G15/09G03G13/09
    • The present invention provides a development apparatus capable of improving the development pole of a plurality of development rolls and the rotation speed thereof, thus obtaining stable printing quality. A first development roll rotatable in the opposite direction to the moving direction of photosensitive body is disposed in the upstream of it, whereas a group of second development rolls are disposed in the down stream, which development rolls are rotatable in the same direction as the moving direction of photoconductive body and have magnets of the same polarity. The first development roll and the photoconductive body define a peripheral speed ratio ranging from 0.5 to 1.5, while allowing the second development roll and the photoconductive body to define a peripheral speed ratio ranging from 0.6 to 1.5. A development control member is provided between the first development roll and the group of second development rolls. A toner density detector is provided in the downstream of the last one of the group of second development rolls which is disposed in the most significant downstream. A cross mixer and a carrier member are also provided under the first development roll and the group of second development rolls.
    • 本发明提供一种能够改善多个显影辊的显影极和其转速的显影装置,从而获得稳定的印刷质量。 在与感光体的移动方向相反的方向上可旋转的第一显影辊设置在其上游,而一组第二显影辊设置在下游中,显影辊可沿与移动的相同的方向旋转 光电导体的方向并具有相同极性的磁体。 第一显影辊和光电导体定义范围为0.5至1.5的圆周速度比,同时允许第二显影辊和光电导体限定范围为0.6至1.5的圆周速度比。 显影控制部件设置在第一显影辊和第二显影辊组之间。 一组调色剂浓度检测器设置在设置在最重要的下游的第二显影辊组中最后一个的下游。 在第一显影辊和第二显影辊组下方还设置有交叉混合器和承载构件。
    • 3. 发明授权
    • Apparatus for printing on both sides of an image printing medium by one
process
    • 用于通过一个处理在图像打印介质的两侧进行打印的装置
    • US06032015A
    • 2000-02-29
    • US9425
    • 1998-01-20
    • Takao UmedaRyoji KojimaMasayasu AnzaiMichio YokosukaKatsuhiko SuzukiTadahiro Kaneko
    • Takao UmedaRyoji KojimaMasayasu AnzaiMichio YokosukaKatsuhiko SuzukiTadahiro Kaneko
    • G03G15/20G03G15/23G03G15/22
    • G03G15/2053G03G15/231G03G2215/2083
    • A fixing system for fixing toner images onto an image printing system such that the image printing medium bearing the toner images on the obverse side and the reverse sides thereof is passed through a nip area between a pair of fixing rollers. In the nip area, a rotation speed of a first fixing roller, which comes into contact with a not-yet fixed toner image, which is formed on the obverse side of the image printing medium, is set to be substantially equal to a rotation speed of a second fixing roller, which comes in contact with a not-yet fixed toner image, formed on the reverse side of the image printing medium. This is accomplished by setting the diameters of the various layers of the first fixing roller to be equal to that of the second fixing roller. When the image printing medium is moved through the nip area by the fixing rollers, a moving speed of the upper side of the image printing medium is equal to that of the lower side thereof. Thus, stresses on the image printing medium are not caused, and no character blur takes place.
    • 一种用于将调色剂图像定影到图像打印系统上的定影系统,使得承载其正面和反面上的调色剂图像的图像打印介质通过一对定影辊之间的辊隙区域。 在夹持区域中,形成在图像打印介质的正面上的与未固定的调色剂图像接触的第一定影辊的旋转速度被设定为基本上等于旋转速度 与形成在图像打印介质的背面上的未固定的调色剂图像接触的第二定影辊。 这是通过将第一定影辊的各层的直径设定为等于第二定影辊的直径来实现的。 当图像打印介质通过定影辊移动通过夹持区域时,图像打印介质的上侧的移动速度等于其下侧的移动速度。 因此,不会引起图像打印介质上的应力,并且不会发生字符模糊。
    • 4. 发明授权
    • Apparatus for printing images on both sides of an image printing medium
by one process
    • 用于通过一个处理在图像打印介质的两侧上打印图像的装置
    • US5848323A
    • 1998-12-08
    • US595221
    • 1996-02-01
    • Takao UmedaRyoji KojimaMasayasu AnzaiMichio YokosukaKatsuhiko SuzukiTadahiro Kaneko
    • Takao UmedaRyoji KojimaMasayasu AnzaiMichio YokosukaKatsuhiko SuzukiTadahiro Kaneko
    • G03G15/20G03G15/23G03G15/16
    • G03G15/2053G03G15/231G03G2215/2083
    • In an electrostatic both-side printing system, a first image forming unit is provided upstream of an image printing medium when viewed in the transporting direction of the image printing medium, and a second image forming unit is provided downstream of the image printing medium. A medium transporting path for transporting the image printing medium is formed between the first and the second image forming units. A first transferring unit, located facing the first image forming unit with the medium transporting path intervening therebetween, for applying no charge onto the rear side of the image printing medium, which does not face the first image forming unit. A second transferring unit being located facing the second image forming unit with the image printing medium with the medium transporting path intervening therebetween, in a state that the second transferring unit is apart from a first toner image formed on the image printing medium by the first image forming unit. In the both-side printing system thus constructed, the first and the second image forming units, and the first and the second transferring units cooperate to form first and second toner images on both sides of the image printing medium, the first and the second toner images being opposite in polarity.
    • 在静电双面打印系统中,当从图像打印介质的传送方向观察时,第一图像形成单元设置在图像打印介质的上游,并且第二图像形成单元设置在图像打印介质的下游。 用于传送图像打印介质的介质传送路径形成在第一和第二图像形成单元之间。 第一传送单元,面向第一图像形成单元,其间插入介质传送路径,用于不向第一图像形成单元面对的图像打印介质的后侧施加电荷。 第二传送单元在第二传送单元与由第一图像形成在第一图像打印介质上的第一调色剂图像分开的状态下面对第二图像形成单元定位,其中介质传送路径介于其间的图像打印介质 成型单元。 在如此构造的双面打印系统中,第一和第二图像形成单元以及第一和第二传送单元协作以在图像打印介质的两侧上形成第一和第二调色剂图像,第一和第二调色剂 图像极性相反。
    • 9. 发明授权
    • Image forming device with image density control
    • 具有图像浓度控制的图像形成装置
    • US07062180B2
    • 2006-06-13
    • US10770524
    • 2004-02-04
    • Katsuhiko Suzuki
    • Katsuhiko Suzuki
    • G03G15/00G03G15/06
    • G03G15/5062G03G2215/00067G03G2215/0607
    • An image forming device having a developing unit for visualizing an electrostatic latent image formed on an image carrying body by utilizing a developing agent containing toners and carriers which transfers a toner image to a recording medium to obtain a record image. A patch sensor is provided for detecting the image density of the record image, and it controls toner density stabilization control and an adjustment value and bias voltage in the developing unit according to a value detected by the patch sensor and a value of current flowing in the image carrying body from the developing unit. Thereby, an image forming device is provided which performs stable image density control when a problem is caused during processing of a predetermined number of printing pages, even when a deterioration of the image due to an abnormal property change of a developing agent is caused.
    • 一种图像形成装置,其具有显影单元,用于通过利用含有调色剂的显影剂和将调色剂图像转印到记录介质以获得记录图像的载体,使形成在图像载体上的静电潜像可视化。 提供了用于检测记录图像的图像浓度的贴片传感器,并且根据由贴片传感器检测的值和在该显影单元中流动的电流值来控制显影单元中的调色剂浓度稳定控制和调整值和偏置电压 来自显影单元的图像承载体。 由此,即使当由于显影剂的异常特性变化引起的图像劣化时,也提供了在预定数量的打印页的处理期间引起问题时执行稳定的图像浓度控制的图像形成装置。