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    • 5. 发明授权
    • Image forming apparatus with density data correction
    • 具有密度数据校正的图像形成装置
    • US09204012B2
    • 2015-12-01
    • US13070654
    • 2011-03-24
    • Hitoshi Furukawa
    • Hitoshi Furukawa
    • G06K15/02H04N1/60
    • H04N1/60H04N1/6033H04N1/6041
    • An image forming apparatus that reduces the downtime due to image density control is provided. To accomplish this, the image forming apparatus obtains, using a sensor, background data at a plurality of measurement positions from a rotation member, and density data at a plurality of measurement positions from a patch image formed on the rotation member. Further, the image forming apparatus normalizes density data based on first background data and calculates first correction density data, and also normalizes density data based on second background data for which the measurement positions have been shifted from those of the first background data, calculates second correction density data, and acquires corrected density data in accordance with the first correction density data or the second correction density data that has a smaller variation.
    • 提供了一种减少由于图像浓度控制引起的停机时间的图像形成装置。 为了实现这一点,图像形成装置使用传感器从旋转构件的多个测量位置获得背景数据,并且从形成在旋转构件上的贴片图像获得多个测量位置处的浓度数据。 此外,图像形成装置基于第一背景数据对浓度数据进行归一化,并计算第一校正浓度数据,并且还根据测量位置已经从第一背景数据的第二背景数据移位的第二背景数据对浓度数据进行归一化,计算第二校正 并且根据具有较小变化的第一校正浓度数据或第二校正浓度数据获取校正的浓度数据。