IMAGE FORMING APPARATUS
    29.
    发明申请
    IMAGE FORMING APPARATUS 有权
    图像形成装置

    公开(公告)号:US20070116480A1

    公开(公告)日:2007-05-24

    申请号:US11558674

    申请日:2006-11-10

    IPC分类号: G03G15/08

    摘要: An image forming apparatus in which a predetermined image density can be obtained by correcting a toner density control target value without consuming toner. The output The output value Vt of the magnetic permeability sensor and the target output value Vtref are compared, and the toner density is controlled by controlling a powder pump on the basis of the comparative result thereof so that the output value Vt approximates the target output value Vtref. In addition, the target output value Vtref is corrected on the basis of the detected result of the image coverage ratio so as to maintain a predetermined development potential of the development apparatus. By virtue of this, even when image forming that involves a significant change in the toner replacement amount in the development apparatus is performed, for example, even when an image of high image coverage ratio is output, the toner density is adjusted to maintain the development capability at a constant, and a predetermined image density is ensured. Moreover, because the image coverage ratio can be detected without consuming toner, toner does not need to be consumed when the target output value Vtref is corrected.

    摘要翻译: 通过在不消耗调色剂的情况下校正调色剂浓度控制目标值,可以获得预定图像浓度的图像形成装置。 输出比较磁导率传感器的输出值Vt和目标输出值Vt<<<>,通过基于比较结果控制粉末泵来控制调色剂浓度, 输出值Vt近似于目标输出值Vt 。 此外,基于图像覆盖率的检测结果来校正目标输出值Vt ,以保持显影装置的预定显影电位。 由此,即使在进行显影装置中的调色剂更换量的显着变化的图像形成的情况下,即使输出高图像覆盖率的图像,也可以调整调色剂浓度以保持显影 能力恒定,并且确保了预定的图像浓度。 此外,由于可以在不消耗调色剂的情况下检测图像覆盖率,当校正目标输出值Vt 时,不需要消耗调色剂。

    Image forming apparatus with a two component developer, toner density detection and toner density correction
    30.
    发明授权
    Image forming apparatus with a two component developer, toner density detection and toner density correction 有权
    具有双组分显影剂的图像形成装置,调色剂浓度检测和调色剂浓度校正

    公开(公告)号:US07809291B2

    公开(公告)日:2010-10-05

    申请号:US11558674

    申请日:2006-11-10

    IPC分类号: G03G15/08

    摘要: An image forming apparatus in which a predetermined image density can be obtained by correcting a toner density control target value without consuming toner. The output value Vt of the magnetic permeability sensor and the target output value Vtref are compared, and the toner density is controlled by controlling a powder pump on the basis of the comparative result thereof so that the output value Vt approximates the target output value Vtref. In addition, the target output value Vtref is corrected on the basis of the detected result of the image coverage ratio so as to maintain a predetermined development potential of the development apparatus. By virtue of this, even when image forming that involves a significant change in the toner replacement amount in the development apparatus is performed, for example, even when an image of high image coverage ratio is output, the toner density is adjusted to maintain the development capability at a constant, and a predetermined image density is ensured. Moreover, because the image coverage ratio can be detected without consuming toner, toner does not need to be consumed when the target output value Vtref is corrected.

    摘要翻译: 通过在不消耗调色剂的情况下校正调色剂浓度控制目标值,可以获得预定图像浓度的图像形成装置。 比较磁导率传感器的输出值Vt和目标输出值Vtref,并根据其比较结果控制粉末泵来控制调色剂浓度,使得输出值Vt近似于目标输出值Vtref。 此外,基于图像覆盖率的检测结果来校正目标输出值Vtref,以保持显影装置的预定显影电位。 由此,即使在进行显影装置中的调色剂更换量的显着变化的图像形成的情况下,即使输出高图像覆盖率的图像,也可以调整调色剂浓度以保持显影 能力恒定,并且确保了预定的图像浓度。 此外,由于可以在不消耗调色剂的情况下检测图像覆盖率,当校正目标输出值Vtref时,不需要消耗调色剂。