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    • 2. 发明授权
    • Image forming apparatus
    • 图像形成装置
    • US07899377B2
    • 2011-03-01
    • US12540071
    • 2009-08-12
    • Fujio OsawaHajime MisumiHideo KageyamaTakashi KuboMitsunori ShioiKanou SaitouSusumu TakagakiTadakazu TsutehiraYuji Sato
    • Fujio OsawaHajime MisumiHideo KageyamaTakashi KuboMitsunori ShioiKanou SaitouSusumu TakagakiTadakazu TsutehiraYuji Sato
    • G03G15/01
    • G03G15/0194G03G15/5058G03G2215/00059G03G2215/0141G03G2215/0161
    • An image forming apparatus includes: a plurality of image forming units as defined herein; an image carrier as defined herein; a first operation controlling unit as defined herein; a second operation controlling unit as defined herein; a density detecting sensor that detects densities of the images formed on the image carrier; a measuring unit that binarizes a density detection output of the image position deviation correction patterns formed on the image carrier, from the density detecting sensor, and that measures intervals between color patterns of the image position deviation correction patterns, based on the binarized output; and a position deviation correction controlling unit that performs a position deviation correcting control of, when the intervals measured by the measuring unit and of the color patterns in the image position deviation correction patterns are deviated from a predetermined range, correcting position deviation of the toner images formed by the image forming units.
    • 图像形成装置包括:如本文所定义的多个图像形成单元; 如本文所定义的图像载体; 本文定义的第一操作控制单元; 本文定义的第二操作控制单元; 密度检测传感器,其检测在所述图像载体上形成的图像的密度; 测量单元,其将来自所述浓度检测传感器的形成在所述图像载体上的图像位置偏差校正图案的浓度检测输出二值化,并且基于所述二值化输出来测量所述图像位置偏差校正图案的颜色图案之间的间隔; 以及位置偏差校正控制单元,当所述测量单元测量的间隔和图像位置偏差校正图案中的颜色图案偏离预定范围时,执行位置偏差校正控制,校正调色剂图像的位置偏差 由图像形成单元形成。