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    • 76. 发明授权
    • Image forming apparatus that prevents image deletion
    • 防止图像删除的图像形成装置
    • US08774670B2
    • 2014-07-08
    • US13367489
    • 2012-02-07
    • Shunsuke Nishimura
    • Shunsuke Nishimura
    • G03G15/02
    • G03G15/0291
    • An image forming apparatus that can prevent image deletion in carrying out image formation upon turning-on of power supply after main power supply is turned off before the image forming apparatus goes into a sleep state. A movable member is moved between a shielding position at which it shields a photosensitive drum from a charger and a retracting position at which the photosensitive drum and the charger are opened to each other. When power supply is turned on, a time period for which the photosensitive drum is rotated by a driving unit is controlled according to the position of the movable member detected by a movable member sensor.
    • 在图像形成装置进入睡眠状态之前,能够防止在主电源之后的电源接通时进行图像形成的图像形成装置被切断。 可动构件在屏蔽感光鼓与充电器的屏蔽位置和感光鼓和充电器彼此打开的收回位置之间移动。 当电源接通时,根据由可移动部件传感器检测到的可动件的位置来控制感光鼓由驱动单元旋转的时间段。
    • 78. 发明授权
    • Image forming apparatus
    • 图像形成装置
    • US08270860B2
    • 2012-09-18
    • US12793805
    • 2010-06-04
    • Takashi FujimoriShunsuke NishimuraAsahiro Nakayoshi
    • Takashi FujimoriShunsuke NishimuraAsahiro Nakayoshi
    • G03G15/043
    • G03G15/043G03G15/5037
    • An image forming apparatus which makes it possible to resolve correction error of potential unevenness caused by insufficient mounting accuracy of an image carrier, in a relatively short time period without performing a conventional operation for removing the image carrier. The image forming apparatus includes a photosensitive drum, an exposure unit, an electrical potential sensor, a shading data ROM, and a CPU. Electrical potential data items associated with respective positions on the surface of the photosensitive drum are stored in the shading data ROM. The CPU corrects an exposure amount onto the photosensitive drum by the exposure unit, based on the electrical potential data read from the ROM, and based on the result of correction, adjusts timing for reading out the data.
    • 一种图像形成装置,其能够在相对短的时间内解决由于图像载体的安装精度不足引起的电位不均匀的校正误差,而不执行用于去除图像载体的常规操作。 图像形成装置包括感光鼓,曝光单元,电位传感器,阴影数据ROM和CPU。 与感光鼓表面上的相应位置相关联的电势数据项被存储在阴影数据ROM中。 CPU基于从ROM读取的电位数据,通过曝光单元校正感光鼓上的曝光量,并且基于校正结果来调整读出数据的定时。