IMAGE FORMING APPARATUS
    28.
    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
    29.
    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。

    Image forming apparatus and image density control method
    30.
    发明授权
    Image forming apparatus and image density control method 有权
    图像形成装置和图像浓度控制方法

    公开(公告)号:US08175471B2

    公开(公告)日:2012-05-08

    申请号:US11952553

    申请日:2007-12-07

    IPC分类号: G03G15/08

    摘要: An image forming apparatus is disclosed that includes an image density control unit that performs control operations based on an image density control condition that is adjustably set to control an output image to have a predetermined image density, an image density control condition modifying unit that calculates a modified image density control condition based on information on an amount of toner exchanged at a developing apparatus within a predetermined period and a parameter for image density control condition calculation and sets the modified image density control condition as the image density control condition to be used by the image density control unit, and a parameter modifying unit that modifies the parameter for image density control condition calculation used by the image density control condition modifying unit based on a toner pattern detection result obtained by detecting a toner pattern formed on a belt member.

    摘要翻译: 公开了一种图像形成装置,其包括:图像浓度控制单元,其基于可调节地设置为控制输出图像以具有预定图像浓度的图像浓度控制条件执行控制操作;图像浓度控制条件修改单元, 基于在预定时段内在显影装置处交换的调色剂量的信息和图像浓度控制条件计算的参数的修改的图像浓度控制条件,并将修改的图像浓度控制条件设置为由图像浓度控制条件使用的图像浓度控制条件 图像浓度控制单元和参数修改单元,其基于通过检测形成在带构件上的调色剂图案而获得的调色剂图案检测结果来修改由图像浓度控制条件修改单元使用的图像浓度控制条件计算的参数。