Image forming apparatus with reciprocating dispersing feature
    41.
    发明授权
    Image forming apparatus with reciprocating dispersing feature 失效
    具有往复分散特征的成像装置

    公开(公告)号:US07058338B2

    公开(公告)日:2006-06-06

    申请号:US11149541

    申请日:2005-06-10

    IPC分类号: G03G21/00

    CPC分类号: G03G21/0064

    摘要: An image forming apparatus includes a photosensitive drum, a charging roller, a transfer roller, and a toner charging brush, wherein the toner charging brush reciprocates in a longitudinal direction of the photosensitive drum. In the image forming apparatus, when a number of rotations per a unit time of the image bearing member is assumed to be “a” and a number of times of reciprocation per unit time of the toner charging brush is assumed to be “b” assuming that R=b/a, R is set to be in a range of 1/25≦R≦3. However, R=m/n (m and n are integers of 5 or less) is excluded. Consequently, generation of a periodic attachment pattern appearing on the photosensitive drum is eliminated.

    摘要翻译: 图像形成装置包括感光鼓,充电辊,转印辊和调色剂充电刷,其中调色剂充电刷在感光鼓的纵向方向上往复运动。 在图像形成装置中,当将图像承载部件的每单位时间的转数假设为“a”,并且假设调色剂充电刷的每单位时间的往复次数假定为“b” R = b / a,R设定在1/25 <= R <3的范围内。 然而,排除R = m / n(m和n为5以下的整数)。 因此,消除了出现在感光鼓上的周期性附着图案的产生。

    Image forming apparatus
    43.
    发明申请
    Image forming apparatus 有权
    图像形成装置

    公开(公告)号:US20050271416A1

    公开(公告)日:2005-12-08

    申请号:US11199121

    申请日:2005-08-09

    IPC分类号: G03G15/08 G03G15/02 G03G21/00

    CPC分类号: G03G15/0216 G03G2215/021

    摘要: An image forming apparatus includes a photosensitive drum, a charge roller for charging the photosensitive drum, a developing device for developing an electrostatic latent image formed on the charged photosensitive drum with a developer, a first auxiliary charging brush which is located upstream from the charge roller in a movement direction of a surface of the photosensitive drum and applies a voltage of a polarity opposite to a normal polarity of a polarity opposite to a normal polarity of the developer, and a second auxiliary charging brush which is located downstream from the first auxiliary charging brush and upstream from the charge roller and applies a voltage of a polarity identical to the normal polarity of the developer. In the image forming apparatus, the first auxiliary charging brush is supplied with an AC voltage to be improved in recovery performance of a transfer residual developer, and contamination of charging means can be prevented.

    摘要翻译: 图像形成装置包括感光鼓,用于对感光鼓充电的充电辊,用显影剂使形成在带电感光鼓上的静电潜像显影的显影装置,位于充电辊上游的第一辅助充电刷 在感光鼓的表面的移动方向上施加极性与显影剂的正常极性相反的电压,以及位于第一辅助充电刷的下游和充电辊上游的第二辅助充电刷, 施加极性与显影剂的正常极性相同的电压。 在图像形成装置中,向第一辅助充电刷供给交流电压,以提高转印残留显影剂的回收性能,并且可以防止充电装置的污染。

    Image forming apparatus that performs image density control
    44.
    发明授权
    Image forming apparatus that performs image density control 有权
    执行图像浓度控制的图像形成装置

    公开(公告)号:US06226466B1

    公开(公告)日:2001-05-01

    申请号:US09286445

    申请日:1999-04-06

    IPC分类号: G03G1500

    摘要: An image forming apparatus includes an image forming section, a density detecting device, and a controller. The controller varies density target values set in accordance with the conditions for image forming on a recording material by the image forming section on the basis of the change in the density characteristics of a plurality of pattern images detected by the density detecting device.

    摘要翻译: 图像形成装置包括图像形成部,密度检测装置和控制器。 控制器根据由浓度检测装置检测的多个图案图像的浓度特性的变化,根据图像形成部分对记录材料上的成像条件设定的浓度目标值进行变化。