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    • 33. 发明申请
    • Electrophotographic apparatus
    • 电子照相设备
    • US20010046390A1
    • 2001-11-29
    • US09804155
    • 2001-03-13
    • Yuji Kamiya
    • G03G015/00G03G015/02G03G015/043
    • G03G15/5037G03G15/043H04N1/4076
    • An electrophotographic apparatus comprises: a photosensitive member; an electrostatic image forming unit, for forming an electrostatic image on the photosensitive member, including electrification means for electrifying the photosensitive member and an exposure unit for exposing the photosensitive member; a detector, for detecting a surface potential on the photosensitive member; a determination unit, for employing the detection results obtained by the detector to determine an electrification amount for the electrification unit and an exposure control value for the exposure unit, for determining the electrification amount for the electrification unit, so that a dark portion potential on the photosensitive member is substantially a target dark portion potential selected from multiple target dark portion potentials, for determining a first exposure control value for the exposure unit, so that a light portion potential, which is based on the determined electrification amount and which is formed on the photosensitive member by the electrification unit and the exposure unit, is substantially a first target light portion potential, and for determining, in accordance with the first exposure control value and the selected target dark portion potential, a second exposure control value for the exposure unit, so that a light portion potential on the electrostatic image is substantially a second target light portion potential.
    • 电摄影装置包括:感光构件; 静电图像形成单元,用于在感光构件上形成静电图像,包括用于使感光构件带电的带电装置和用于使感光构件曝光的曝光单元; 检测器,用于检测感光构件上的表面电位; 确定单元,用于使用由检测器获得的检测结果来确定充电单元的通电量和用于曝光单元的曝光控制值,以确定充电单元的通电量,使得在 感光构件基本上是从多个目标暗部电位中选择的目标暗部电位,用于确定曝光单元的第一曝光控制值,使得基于所确定的带电量并形成在所述曝光单元上的光部分电位 通过带电单元和曝光单元的感光构件基本上是第一目标光部分电位,并且用于根据第一曝光控制值和所选择的目标暗部电位确定曝光单元的第二曝光控制值, 使得静电图像上的光部分电位为 基本上第二目标光部分电位。
    • 35. 发明申请
    • Image forming apparatus with cleaning sequence of contact charging members
    • 具有接触充电部件清洁顺序的图像形成装置
    • US20010026694A1
    • 2001-10-04
    • US09741020
    • 2000-12-21
    • Katsuhiro SakaizawaManami Sekiguchi
    • G03G015/02
    • G03G15/0225G03G2221/0005
    • The present invention provides an image forming apparatus, which has an image bearing body for bearing a toner image, transferring device for transferring a toner image on the image bearing body to a transferring material, a charging member for charging the image bearing body, having a residual toner after the transfer on a surface thereof by being brought into contact therewith, electrostatic image forming device for forming an electrostatic image on the image bearing body charged by the charging member, developing device for collecting the residual toner on the image bearing body while developing the electrostatic image on the image bearing body by using a toner charged in the same polarity as a charging polarity generated by the charging member, control device for controlling a voltage to be applied to the charging member, and a cleaning sequence for performing a cleaning of the charging member by applying a voltage not higher than a discharge threshold and equal to the polarity of the toner after a discharge voltage reverse to the polarity of the toner is applied onto the charging member, when an image formation is not effected.
    • 本发明提供了一种图像形成装置,其具有用于承载调色剂图像的图像承载体,用于将图像承载体上的调色剂图像转印到转印材料的转印装置,用于对图像承载体充电的充电部件, 通过与其接触而在其表面上转印后的残留调色剂,用于在由充电部件充电的图像承载体上形成静电图像的静电图像形成装置,用于在显影时收集图像承载体上的残留调色剂的显影装置 通过使用以与充电部件产生的充电极性相同的极性进行充电的调色剂,图像承载体上的静电图像,用于控制施加到充电部件的电压的控制装置,以及用于执行清洁 通过施加不高于放电阈值并等于其极性的电压的充电构件 当不进行图像形成时,在与调色剂的极性相反的放电电压之后的调色剂被施加到充电部件上。
    • 37. 发明申请
    • Image forming apparatus and charge roller therefor
    • 图像形成装置和充电辊
    • US20010014232A1
    • 2001-08-16
    • US09757616
    • 2001-01-11
    • Ricoh Company, Ltd.
    • Takeo SudaAkiyoshi Tanaka
    • G03G015/02
    • G03G15/0233
    • An image forming apparatus includes a charge roller rotatable in contact with the surface of an image carrier to thereby charge the surface. The charged surface of the image carrier is exposed imagewise for forming a latent image. A developing device develops the latent image to thereby form a corresponding toner image. The toner image is transferred to a recording sheet. The charge roller is formed of a core and an elastic body affixed to the periphery of the core. Stearic acid to be added to rubber, which is the major component of the elastic body, is selected to be 1 wt % or less. An AC current value to be applied to the core is selected to be 1.1 mA or less. The image carrier is free from defective charging ascribable to impurities to deposit on the charge roller.
    • 图像形成装置包括可旋转地与图像载体的表面接触的充电辊,从而对表面充电。 图像载体的带电表面被成像曝光以形成潜像。 显影装置显影潜像,从而形成相应的调色剂图像。 调色剂图像被转印到记录纸上。 充电辊由芯和固定在芯的周边的弹性体形成。 添加到作为弹性体的主要成分的橡胶中的硬脂酸被选择为1重量%以下。 将要施加到芯的AC电流值选择为1.1mA以下。 图像载体没有因杂质而导致的充电辊不良的充电。
    • 38. 发明申请
    • Azine-based charge transport materials
    • 基于Azine的电荷传输材料
    • US20040241562A1
    • 2004-12-02
    • US10804719
    • 2004-03-19
    • Nusrallah JubranZbigniew TokarskiKam W. Law
    • G03G015/02C07D237/02
    • C07C251/88C07C2603/18G03G5/0607G03G5/0616
    • This invention includes an improved organophotoreceptor having an electrically conductive substrate and a photoconductive element on the electrically conductive substrate where the photoconductive element comprises: (a) a charge transport material having the formula YnullNnullNnullXnullNnullNnullYnullwhere Y and Ynull comprise, each independently, a 9-fluorenylidene group; and X is a conjugated linking group that allows the delocalization of pi electrons over at least Y and Ynull, such as a 1,2-ethanediylidene group, a 1,4-phenylenedimethylidyne group, a 2,4-cyclohexadienylidene group, a 2,5-cyclohexadienylidene group, a bicyclohexylidene-2,5,2null,5null-tetraene group, a bicyclohexylidene-2,4,2null,4null-tetraene group, or a combination thereof; and (b) a charge generating compound. Corresponding electrophotographic apparatuses and imaging methods are described.
    • 本发明包括一种改进的有机光感受器,其在导电基体上具有导电基底和光电导元件,其中光电导元件包括:(a)具有式Y = NN = X = NN = Y'的电荷传输材料,其中Y和Y '各自独立地包含9-亚芴基; X是一个共轭连接基团,其允许π电子在至少Y和Y'上的离域化,例如1,2-亚乙二基,1,4-亚苯基二亚甲基二基,2,4-环己二亚乙基,2 ,5-环己二烯基,双亚己基-2,5,2',5'-四烯基,双亚己基-2,4,2',4'-四烯基或其组合; 和(b)电荷产生化合物。 描述相应的电子照相设备和成像方法。
    • 39. 发明申请
    • Image forming apparatus
    • 图像形成装置
    • US20040202494A1
    • 2004-10-14
    • US09900044
    • 2001-07-09
    • Masahiro YoshidaJunichi KatoYasushi ShimizuHiroshi SatoHiroyuki Oba
    • G03G015/02G03G015/24
    • G03G21/0064G03G15/0225G03G15/0813G03G2215/022
    • An image forming apparatus is provided, which includes: an image bearing member, a charging member for charging the image bearing member, the charging member bearing electrically conductive particles that contact the image bearing member, and a developer carrying member for carrying a developer provided with toner and electrically conductive particles, the developer carrying member being applied a voltage to develop an electrostatic image formed on the image bearing member with the developer and being capable of collecting a residual developer on the image bearing member, wherein the developer carrying member is provided in such a manner that the developer carrying member opposes the image bearing member via a gap of 150 nullm or more and 250 nullm or less.
    • 提供了一种图像形成装置,其包括:图像承载部件,用于对图像承载部件充电的充电部件,承载与图像承载部件接触的导电颗粒的充电部件和用于承载显影剂的显影剂承载部件, 调色剂和导电颗粒,显影剂承载构件施加电压以显影形成在图像承载构件上的静电图像,并且能够在图像承载构件上收集残留的显影剂,其中显影剂承载构件设置在 这种方式使得显影剂承载构件经由150μm以上且250μm以下的间隙与图像承载部件抵接。