Image forming apparatus to detect and correct density variations in a developed image
    1.
    发明授权
    Image forming apparatus to detect and correct density variations in a developed image 有权
    用于检测和校正显影图像中的密度变化的图像形成装置

    公开(公告)号:US08648892B2

    公开(公告)日:2014-02-11

    申请号:US13354789

    申请日:2012-01-20

    IPC分类号: B41J2/435 G03G15/04

    摘要: Apparatus that forms an image according to image information includes density sensors that detect image density variations in main and sub-scanning directions. A processing device generates correction data for correcting a light source output to suppress the density variations based on detection results. The processing device modifies the correction data such that the light source output after the correction is at least a minimum rated output at a position at which the output after the correction is lower than the minimum rated output, in the relation between a position on the surface of the photosensitive element in the main-scanning direction and the output after the correction, and modifies the correction data such that the light source output after the correction is at most a maximum rated output at a position at which the output after the correction is higher than the maximum rated output.

    摘要翻译: 根据图像信息形成图像的装置包括检测主扫描方向和副扫描方向上的图像浓度变化的密度传感器。 处理装置产生用于校正光源输出的校正数据,以根据检测结果抑制密度变化。 处理装置修正校正数据,使得校正后的光源输出在校正后的输出低于最小额定输出的位置处至少为最小额定输出,表面上的位置之间的关系 的主扫描方向上的感光元件和校正后的输出,并且修正校正数据,使得校正后的光源输出在校正后的输出更高的位置处于最大额定输出 超过最大额定输出。

    IMAGE FORMING APPARATUS
    2.
    发明申请
    IMAGE FORMING APPARATUS 有权
    图像形成装置

    公开(公告)号:US20130243459A1

    公开(公告)日:2013-09-19

    申请号:US13843147

    申请日:2013-03-15

    IPC分类号: G03G15/00

    CPC分类号: G03G15/556 G03G15/5058

    摘要: An image forming apparatus is disclosed, including a light source; a drum; an optical scanning apparatus; and an endless belt. The image forming apparatus further includes a pattern forming unit which forms, on the endless belt along a conveying direction of the endless belt, a density fluctuation detecting pattern having a period; a density sensor which detects the density fluctuating detecting pattern and outputs a density signal including information on density fluctuations in the conveying direction of the endless belt; and a period detecting sensor which detects the period included in the density fluctuations.

    摘要翻译: 公开了一种图像形成装置,包括光源; 鼓 光学扫描装置; 和无尽的皮带。 图像形成装置还包括图案形成单元,其沿环形带的输送方向在环形带上形成具有周期的浓度波动检测图案; 密度传感器,其检测所述浓度波动检测图案,并输出密度信号,所述浓度信号包括关于环形带的传送方向上的密度波动的信息; 以及周期检测传感器,其检测包含在密度波动中的周期。

    IMAGE FORMING APPARATUS
    3.
    发明申请
    IMAGE FORMING APPARATUS 有权
    图像形成装置

    公开(公告)号:US20120189328A1

    公开(公告)日:2012-07-26

    申请号:US13354789

    申请日:2012-01-20

    IPC分类号: G03G15/04

    摘要: Apparatus that forms an image according to image information includes density sensors that detect image density variations in main and sub-scanning directions. A processing device generates correction data for correcting a light source output to suppress the density variations based on detection results. The processing device modifies the correction data such that the light source output after the correction is at least a minimum rated output at a position at which the output after the correction is lower than the minimum rated output, in the relation between a position on the surface of the photosensitive element in the main-scanning direction and the output after the correction, and modifies the correction data such that the light source output after the correction is at most a maximum rated output at a position at which the output after the correction is higher than the maximum rated output.

    摘要翻译: 根据图像信息形成图像的装置包括检测主扫描方向和副扫描方向上的图像浓度变化的密度传感器。 处理装置产生用于校正光源输出的校正数据,以根据检测结果抑制密度变化。 处理装置修正校正数据,使得校正后的光源输出在校正后的输出低于最小额定输出的位置处至少为最小额定输出,表面上的位置之间的关系 的主扫描方向上的感光元件和校正后的输出,并且修正校正数据,使得校正后的光源输出在校正后的输出更高的位置处于最大额定输出 超过最大额定输出。

    Image forming apparatus with a density sensor for detecting density fluctuations
    4.
    发明授权
    Image forming apparatus with a density sensor for detecting density fluctuations 有权
    具有用于检测浓度波动的密度传感器的图像形成装置

    公开(公告)号:US08983318B2

    公开(公告)日:2015-03-17

    申请号:US13843147

    申请日:2013-03-15

    IPC分类号: G03G15/00

    CPC分类号: G03G15/556 G03G15/5058

    摘要: An image forming apparatus is disclosed, including a light source; a drum; an optical scanning apparatus; and an endless belt. The image forming apparatus further includes a pattern forming unit which forms, on the endless belt along a conveying direction of the endless belt, a density fluctuation detecting pattern having a period; a density sensor which detects the density fluctuating detecting pattern and outputs a density signal including information on density fluctuations in the conveying direction of the endless belt; and a period detecting sensor which detects the period included in the density fluctuations.

    摘要翻译: 公开了一种图像形成装置,包括光源; 鼓 光学扫描装置; 和无尽的皮带。 图像形成装置还包括图案形成单元,其沿环形带的输送方向在环形带上形成具有周期的浓度波动检测图案; 密度传感器,其检测所述浓度波动检测图案,并输出密度信号,所述浓度信号包括关于环形带的传送方向上的密度波动的信息; 以及周期检测传感器,其检测包含在密度波动中的周期。

    Image forming apparatus and density change suppressing method
    5.
    发明授权
    Image forming apparatus and density change suppressing method 有权
    图像形成装置和密度变化抑制方法

    公开(公告)号:US08929759B2

    公开(公告)日:2015-01-06

    申请号:US13889781

    申请日:2013-05-08

    摘要: An image forming apparatus includes: a density detection unit that detects densities of an image developed by a developing unit at a plurality of positions in a main-scanning direction; a processing unit that obtains at least one of an amplitude and a phase of a first periodical density change of the image, of which cycle is a rotation cycle of a photosensitive drum, at the plurality of positions in the main-scanning direction on the basis of an output signal of the density detection unit, and corrects a drive signal for the light source so as to suppress the first periodical density change of the image at each position in the main-scanning direction on the basis of the rotation cycle of the photosensitive drum and at least one of the amplitude and the phase.

    摘要翻译: 图像形成装置包括:浓度检测单元,其检测由主扫描方向上的多个位置处的显影单元显影的图像的浓度; 处理单元,其基于在主扫描方向上的多个位置处获取图像的第一周期性密度变化的幅度和相位中的至少一个,哪个周期是感光鼓的旋转周期 并且校正用于光源的驱动信号,以便基于感光体的旋转周期来抑制主扫描方向上每个位置处的图像的第一周期性密度变化 鼓和振幅和相位中的至少一个。

    IMAGE FORMING APPARATUS AND DENSITY CHANGE SUPPRESSING METHOD
    6.
    发明申请
    IMAGE FORMING APPARATUS AND DENSITY CHANGE SUPPRESSING METHOD 有权
    图像形成装置和密度变化抑制方法

    公开(公告)号:US20130302052A1

    公开(公告)日:2013-11-14

    申请号:US13889781

    申请日:2013-05-08

    IPC分类号: G03G15/00

    摘要: An image forming apparatus includes: a density detection unit that detects densities of an image developed by a developing unit at a plurality of positions in a main-scanning direction; a processing unit that obtains at least one of an amplitude and a phase of a first periodical density change of the image, of which cycle is a rotation cycle of a photosensitive drum, at the plurality of positions in the main-scanning direction on the basis of an output signal of the density detection unit, and corrects a drive signal for the light source so as to suppress the first periodical density change of the image at each position in the main-scanning direction on the basis of the rotation cycle of the photosensitive drum and at least one of the amplitude and the phase.

    摘要翻译: 图像形成装置包括:浓度检测单元,其检测由主扫描方向上的多个位置处的显影单元显影的图像的浓度; 处理单元,其基于在主扫描方向上的多个位置处获取图像的第一周期性密度变化的幅度和相位中的至少一个,哪个周期是感光鼓的旋转周期 并且校正用于光源的驱动信号,以便基于感光体的旋转周期来抑制主扫描方向上每个位置处的图像的第一周期性密度变化 鼓和振幅和相位中的至少一个。

    Optical scanning device, image forming apparatus, and optical scanning device designing method
    7.
    发明授权
    Optical scanning device, image forming apparatus, and optical scanning device designing method 有权
    光学扫描装置,成像装置和光学扫描装置的设计方法

    公开(公告)号:US08654168B2

    公开(公告)日:2014-02-18

    申请号:US13556500

    申请日:2012-07-24

    IPC分类号: B41J15/14 B41J27/00

    摘要: An optical scanning device including a light source having multiple light emitters; an optical element to reflect and transmit the emitted light beams; a photodetector to receive the reflected light beams; an aperture having an opening to shape the transmitted light beams; a light deflector to deflect the transmitted light beams; and a scanning optics to guide the deflected light beams to a scanning surface. The quantity of each of the light beams received by the photodetector is not less than 0.01 mW, and the size of a light receiving surface of the photodetector is determined such that even when the full width at half maximum of the emitted light beams changes, the rate of change of the ratio of the quantity of the light beams detected by the photodetector to the quantity of the light beams passing through the opening of the aperture is not greater than 4%.

    摘要翻译: 一种光学扫描装置,包括具有多个发光体的光源; 用于反射和透射发射的光束的光学元件; 用于接收反射光束的光电检测器; 具有用于使透射光束成形的开口的孔; 光偏转器,用于偏转透射光束; 以及用于将偏转的光束引导到扫描表面的扫描光学器件。 由光电检测器接收的每个光束的量不小于0.01mW,并且确定光电检测器的光接收表面的尺寸,使得即使当发射光束的最大半峰全部变化时, 由光检测器检测的光束的量与通过孔的开口的光束的量的比率的变化率不大于4%。

    APPLICATION DEVICE AND IMAGE FORMING SYSTEM

    公开(公告)号:US20170165981A1

    公开(公告)日:2017-06-15

    申请号:US15367621

    申请日:2016-12-02

    IPC分类号: B41J11/00

    摘要: An application device includes a conveyer to convey a recording medium, an application roller to apply a treatment liquid to the recording medium, a pressure roller to sandwich the recording medium with the application roller to press the recording medium against the application roller, and a winding member to form a curved conveying path to have the recording medium curved along a conveying direction to wind the recording medium around the pressure roller. The pressure roller comes in contact with the application roller when applying the treatment liquid and separates from the application roller when not applying the treatment liquid. A predetermined positional relationship is maintained between the pressure roller and the winding member while the pressure roller moves close to the application roller to be in contact with the application roller, or the pressure roller moves away from the application roller to be separated from the application roller.

    Light source apparatus, and optical scanning apparatus and image forming apparatus using the same
    9.
    发明授权
    Light source apparatus, and optical scanning apparatus and image forming apparatus using the same 有权
    光源装置和光学扫描装置及使用其的成像装置

    公开(公告)号:US08237763B2

    公开(公告)日:2012-08-07

    申请号:US12474511

    申请日:2009-05-29

    申请人: Kazuhiro Akatsu

    发明人: Kazuhiro Akatsu

    IPC分类号: B41J27/00

    摘要: A disclosed light source apparatus includes a light source including multiple light emitting devices; an optical element configured to transmit light emitted from the light source; a tube configured to hold the optical element; and a tube holder configured to fix the tube by holding an end of the tube close to the light source or by holding the end of the tube on the light emission side away from the light source. A positional displacement preventing member is provided at the other end of the tube on a light emission side away from the light source in such a manner as to be slidable on the tube in the direction of an optical axis and prevent positional displacement of the tube in all directions perpendicular to the optical axis.

    摘要翻译: 所公开的光源装置包括:包括多个发光装置的光源; 光学元件,被配置为透射从所述光源发射的光; 被配置为保持所述光学元件的管; 以及管保持器,其被配置为通过将管的端部保持靠近光源来固定,或者通过将管的端部远离光源保持在发光侧。 一位置偏移防止构件设置在远离光源的发光侧的管的另一端,以便在光轴方向上能够在管上滑动,并防止管的位置偏移 所有方向垂直于光轴。

    Application device and image forming system

    公开(公告)号:US09889679B2

    公开(公告)日:2018-02-13

    申请号:US15367621

    申请日:2016-12-02

    IPC分类号: B41J11/00

    摘要: An application device includes a conveyer to convey a recording medium, an application roller to apply a treatment liquid to the recording medium, a pressure roller to sandwich the recording medium with the application roller to press the recording medium against the application roller, and a winding member to form a curved conveying path to have the recording medium curved along a conveying direction to wind the recording medium around the pressure roller. The pressure roller comes in contact with the application roller when applying the treatment liquid and separates from the application roller when not applying the treatment liquid. A predetermined positional relationship is maintained between the pressure roller and the winding member while the pressure roller moves close to the application roller to be in contact with the application roller, or the pressure roller moves away from the application roller to be separated from the application roller.