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    • 9. 发明授权
    • Image reading device and image forming apparatus
    • 图像读取装置和图像形成装置
    • US08634116B2
    • 2014-01-21
    • US13236242
    • 2011-09-19
    • Sei AmagaiNoriko AraiKenji UedaShinji HanaokaChihiro MatsugumaAtsushi Sato
    • Sei AmagaiNoriko AraiKenji UedaShinji HanaokaChihiro MatsugumaAtsushi Sato
    • G03F3/08H04N1/04G06K9/32G03G15/01B41J2/47B41J2/45H04N9/093
    • H04N1/401H04N1/40056
    • An image reading device includes a reading unit, a first correcting unit, and a second correcting unit. The reading unit includes multiple read pixel-arrays and converts a signal charge obtained from pixels in each read pixel-array to an electric signal and outputs the electric signal as a read signal of each read pixel-array. The first correcting unit individually delays the read signals of the respective read pixel-arrays output from the reading unit so as to correct misregistration of the read signals. The second correcting unit corrects the misregistration of the read signals of the respective read pixel-arrays corrected by the first correcting unit by performing a two-point interpolation process so that a correction amount for the read signal of one specific read pixel-array among the multiple read pixel-arrays is not smaller than a correction amount for the read signal or signals of the remaining read pixel-array or pixel-arrays.
    • 图像读取装置包括读取单元,第一校正单元和第二校正单元。 读取单元包括多个读取像素阵列,并将从每个读取像素阵列中的像素获得的信号电荷转换为电信号,并将该电信号作为每个读取的像素阵列的读取信号输出。 第一校正单元单独地延迟从读取单元输出的各个读取像素阵列的读取信号,以校正读取信号的不对准。 第二校正单元通过执行两点插值处理来校正由第一校正单元校正的各个读取像素阵列的读取信号的对准,使得对于第一校正单元中的一个特定读取像素阵列的读取信号的校正量 多个读取像素阵列不小于读取信号的校正量或剩余的读取像素阵列或像素阵列的信号。