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    • 41. 发明申请
    • Image forming apparatus
    • 图像形成装置
    • US20040179863A1
    • 2004-09-16
    • US10383676
    • 2003-03-10
    • TOSHIBA TEC KABUSHIKI KAISHA
    • Takashi Hatakeyama
    • G03G015/02
    • G03G15/0216G03G2215/021
    • An image forming apparatus comprises a charging device configured to, by allowing a brush roller to be rotated in such a state as to be set in contact with a surface of a photosensitive body, charge the surface of that image carrier, a light exposure device configured to radiate image information light onto the surface of the image carrier charged by the charging device to form an electrostatic latent image, a developing device configured to develop the electrostatic latent image formed by the light exposure device into a developing agent image, a transfer device configured to transfer the developing agent image which is developed by the developing device to a sheet, and a guide device configured to guide an outer periphery of the brush roller so as to prevent the image information light which is radiated toward the photosensitive body from being blocked by the brush roller of the charging device.
    • 图像形成装置包括:充电装置,其被配置为通过允许刷辊在与感光体的表面接触的状态下旋转的状态,对所述图像载体的表面进行充电,所述曝光装置配置 将图像信息光照射到由充电装置充电的图像载体的表面上以形成静电潜像;显影装置,被配置为将由曝光装置形成的静电潜像显影成显影剂图像;配置 将由显影装置显影的显影剂图像转印到纸张上;以及引导装置,其构造成引导刷辊的外周,以防止向感光体辐射的图像信息光被阻挡 充电装置的刷辊。
    • 43. 发明申请
    • INTERMITTENT DC BIAS CHARGE ROLL WITH DC OFFSET VOLTAGE
    • 直流偏置电压的直流偏置充电辊
    • US20040114955A1
    • 2004-06-17
    • US10319172
    • 2002-12-13
    • Xerox Corporation
    • John S. FacciPaul W. Morehouse JR.
    • G03G015/02
    • G03G15/0266
    • An apparatus and process for applying an electrical charge to a photoreceptor wherein a bias charge roll member is situated in contact or in close proximity with a surface of member to be charged such as a photoreceptor. The bias charge roll member is supplied with an electrical bias having a rectified AC waveform onto which a DC bias is superimposed after the waveform has been rectified. The result is the ability to raise the voltage potential of the photoreceptor with less pulse voltage and, more particularly, to increase the voltage potential of the photoreceptor along as if only DC voltage were applied far above what is possible in the prior art. Among the advantages of the invention is the ability to minimize photoreceptor wear at higher levels of photoreceptor charge since the DC-offset bias enables the second Paschen threshold to be avoided for higher levels of the photoreceptor charge.
    • 一种用于将电荷施加到感光体的装置和方法,其中偏置电荷辊构件位于与待充电构件的表面诸如感光体的接触或非常接近。 在波形整流之后,向偏置电荷辊构件提供具有整流的AC波形的电偏压,在其上叠加有DC偏压。 结果是能够以较少的脉冲电压提高感光体的电位,更具体地说,提高感光体的电位,好像只有直流电压远高于现有技术中可能的。 本发明的优点之一是在较高感光度电荷水平下使感光体磨损最小化的能力,因为直流偏移偏置使得能够避免更高水平的光感受器电荷的第二帕辛阈值。
    • 44. 发明申请
    • Image forming apparatus
    • 图像形成装置
    • US20040091277A1
    • 2004-05-13
    • US10698529
    • 2003-11-03
    • Canon Kabushiki Kaisha
    • Toshio MiyamotoMasahiko SuzumiKoji Nihonyanagi
    • G03G015/02G03G015/16
    • G03G15/1675
    • An image forming apparatus which can prevent the electric discharge when the trailing edge of a recording material passes a transferring position, and yet can stabilize the surface potential of a photosensitive drum. A controller changes a transfer bias voltage Vt during the supply of paper to 0 V before the trailing edge of recording paper arrives at a transferring nip part, changes it to a transfer bias voltage V0 during the non-supply of paper after the trailing edge of the recording paper has passed the transferring nip part, and changes a charging bias voltage to a charging bias voltage smaller than a normal charging bias voltage when an area on the photosensitive drum to which 0 V has been applied passes a charging nip portion. The transfer bias voltage V0 during the non-supply of paper is smaller than the transfer bias voltage Vt during the supply of paper.
    • 一种图像形成装置,当记录材料的后缘通过转印位置时,能够防止放电,并且还可以稳定感光鼓的表面电位。 在记录纸的后缘到达转印夹持部分之前,控制器将纸张供给期间的转印偏压电压Vt改变为0V,在纸张的后端之后将其改变为转印偏压V0 当已经施加了0V的感光鼓上的区域通过充电压区部分时,记录纸通过转印夹持部,并且将充电偏压改变为小于正常充电偏压的充电偏压。 不供纸期间的转印偏压电压V0小于供纸期间的转印偏压电压Vt。
    • 45. 发明申请
    • ELECTROPHOTOGRAPHIC IMAGE FORMING APPARATUS
    • 电子图像形成装置
    • US20040081474A1
    • 2004-04-29
    • US10279031
    • 2002-10-24
    • TOSHIBA TEC KABUSHIKI KAISHA
    • Hirotaka FukuyamaKoichiro Sato
    • G03G015/02G03G015/06
    • G03G15/0275
    • A high image quality electrophotographic image forming apparatus is provided without increasing the size and cost, and reducing the life thereof. The potential difference (contrast potential) between a photoreceptor and a development roller for supplying toner to the photoreceptor by the use of a carrier is set to be smaller in the non-image area irrelevant to the printing operation, and set to be larger in the image area relevant to the printing operation. In this manner, the damage to the photoreceptor caused by the adhesion of the carrier is reduced in the non-image area irrelevant to the printing operation, and the fog is reduced in the image area relevant to the printing operation.
    • 提供高图像质量的电子照相图像形成装置,而不增加尺寸和成本,并且减少其寿命。 通过使用载体将感光体和用于向感光体供给调色剂的显影辊之间的电位差(对比度电位)设定为与打印操作无关的非图像区域中的电位差(对比度电位)较小,并且在 图像区域与打印操作相关。 以这种方式,在与打印操作无关的非图像区域中,由于载体的粘附引起的对感光体的损伤减小,并且与打印操作相关的图像区域中的雾度降低。
    • 50. 发明申请
    • Image forming apparatus
    • 图像形成装置
    • US20040005159A1
    • 2004-01-08
    • US10609469
    • 2003-07-01
    • Mitsuhiro ItoHiroaki Sakai
    • G03G015/02
    • G03G15/55G03G15/0266
    • This invention provides an image forming apparatus where the useful life of the image carrier does not become significantly short. This system has a charging unit, a charge voltage loading unit, an exposure unit, a development unit, an image transfer unit and a control unit, wherein, when the transport interval of the plural recording materials is shorter than a predetermined time the AC charge voltage applied to the image carrier during the transport interval being a first AC charge voltage, and when the transport interval is longer than the predetermined time the ac charge voltage applied to the image carrier during the transport interval being a second AC charge voltage, the control unit makes the current running in the charging unit to which the second charge voltage is applied lower than the current running in the charging unit to which the first AC charge voltage is applied.
    • 本发明提供了一种图像形成装置,其中图像载体的使用寿命不会变得很短。 该系统具有充电单元,充电电压加载单元,曝光单元,显影单元,图像转印单元和控制单元,其中当多个记录材料的传送间隔短于预定时间时,AC充电 在传输间隔期间施加到图像载体上的电压为第一AC充电电压,并且当传输间隔长于预定时间时,在传输间隔期间施加到图像载体的ac充电电压为第二AC充电电压,则控制 单元使得在施加第二充电电压的充电单元中的电流低于施加有第一AC充电电压的充电单元中运行的电流。