Image forming apparatus and image correction method that calculate correction amounts associated with a main scanning direction
    1.
    发明授权
    Image forming apparatus and image correction method that calculate correction amounts associated with a main scanning direction 有权
    计算与主扫描方向相关联的校正量的图像形成装置和图像校正方法

    公开(公告)号:US09019551B2

    公开(公告)日:2015-04-28

    申请号:US14043258

    申请日:2013-10-01

    IPC分类号: H04N1/40 H04N1/50

    CPC分类号: H04N1/506

    摘要: Disclosed is an image forming apparatus including, at least, an image data storage unit that stores image data; an inclination amount detection unit that detects a first inclination amount of a portion of the image data spanning from one end to the other end relative to a main scanning direction; an inclination amount storage unit that stores, when a gradient of the image data changes at a point in the main scanning direction, a second inclination amount of a portion of the image data spanning from the one end to the point or from the other end to the point; a correction amount calculation unit that calculates correction amounts associated with the main scanning direction by switching, at the point, whether the first inclination amount is increased or decreased by the second inclination amount; and an image correction unit that corrects an image based on the correction amounts.

    摘要翻译: 公开了一种图像形成装置,至少包括存储图像数据的图像数据存储单元; 倾斜量检测单元,其相对于主扫描方向检测从一端到另一端跨越的图像数据的一部分的第一倾斜量; 倾斜量存储单元,当图像数据的梯度在主扫描方向上的点变化时,存储从一端到点或从另一端到另一端的图像数据的一部分的第二倾斜量, 点; 校正量计算单元,通过在第一倾斜量是否将第一倾斜量增加或减少第二倾斜量的情况下,来计算与主扫描方向相关联的校正量; 以及图像校正单元,其基于校正量来校正图像。

    Optical-writing control device, image forming apparatus, and method of controlling optical writing device
    2.
    发明授权
    Optical-writing control device, image forming apparatus, and method of controlling optical writing device 有权
    光写控制装置,图像形成装置以及光写入装置的控制方法

    公开(公告)号:US09036198B2

    公开(公告)日:2015-05-19

    申请号:US14086266

    申请日:2013-11-21

    摘要: An optical-writing control device calculates correction values for use in correcting a transfer position at which developing-agent images are to be transferred onto a sheet, and overlaying positions at which the developing-agent images are to be overlaid, based on a detection signal output from a sensor upon detection of a correction pattern for use in correcting the transfer position and a correction pattern for use in correcting the overlaying positions. A timing of detecting the pattern for use in correcting the overlaying positions is determined based on a correction value calculated based on the detection signal output upon detection of the pattern for use in correcting the transfer position. The pattern for use in correcting the transfer position is caused to have a width, in the main-scanning direction, that is wider than the width in the main-scanning direction of the pattern for use in correcting the overlaying positions.

    摘要翻译: 光写入控制装置基于检测信号计算用于校正显影剂图像要转印到片材上的转印位置和重叠显影剂图像的重叠位置的校正值 在检测到用于校正转印位置的校正图案时从传感器输出的校正图案和用于校正重叠位置的校正图案。 基于在检测用于校正转印位置的图案时基于输出的检测信号计算的校正值来确定检测用于校正重叠位置的图案的定时。 使得用于校正转印位置的图案在主扫描方向上具有比用于校正重叠位置的图案的主扫描方向上的宽度宽的宽度。

    Optical writing control device, image forming apparatus, and method of controlling optical writing device
    4.
    发明授权
    Optical writing control device, image forming apparatus, and method of controlling optical writing device 有权
    光写入控制装置,图像形成装置以及光写入装置的控制方法

    公开(公告)号:US09164414B2

    公开(公告)日:2015-10-20

    申请号:US14093846

    申请日:2013-12-02

    摘要: An optical writing control device includes a light emission control unit that controls light emission of a light source to exposes a photosensitive element. The light emission control unit is configured to draw two patterns as patterns for correction used to correct a transfer position of a developer image obtained by developing an electrostatic latent image formed on the photosensitive element, the two patterns including a narrow width pattern where a width of the pattern corresponds to a width of a detection area of a sensor that detects the patterns, in the main-scanning direction, and a wide width pattern having a wider width than the narrow width pattern, and control the light emission, after calculation of a correction value based on a detection signal of the wide width pattern is properly completed, in a manner where the narrow width pattern is drawn upon the calculation of the correction value.

    摘要翻译: 光学写入控制装置包括控制光源的光发射以曝光感光元件的发光控制单元。 发光控制单元被配置为将两个图案作为用于校正的图案,用于校正通过显影形成在感光元件上的静电潜像而获得的显影剂图像的转印位置,该两个图案包括窄宽度图案,其宽度 该图案对应于检测主扫描方向的图案的传感器的检测区域的宽度和宽度比窄幅图案宽的宽幅图案,并且在计算出 通过在校正值的计算中绘制窄幅图案的方式,适当地完成基于宽幅图案的检测信号的校正值。

    Optical writing device, image forming apparatus, and control method of optical writing device
    5.
    发明授权
    Optical writing device, image forming apparatus, and control method of optical writing device 有权
    光写入装置,图像形成装置以及光写入装置的控制方法

    公开(公告)号:US08957933B2

    公开(公告)日:2015-02-17

    申请号:US13960165

    申请日:2013-08-06

    CPC分类号: G03G15/80 G03G15/5004

    摘要: An optical writing device forming an electrical latent image on a photoreceptor includes an optical writing unit configured to apply light to the photoreceptor, a power supply unit configured to supply power to the optical writing unit, a power supply status detector configured to detect a power supply status of the power supplied from the power supply unit to the optical writing unit, and output power supply information or power cutoff information, a power cutoff information retaining unit configured to retain the power cutoff information when the power cutoff information is output from the power supply status detector, and a power sensor configured to sense a power supply status of the power supplied by the power supply unit based on the power cutoff information retained by the power cutoff information retaining unit.

    摘要翻译: 在感光体上形成电潜象的光写入装置包括配置成向感光体施加光的光写入单元,配置为向光写入单元供电的电源单元,电源状态检测器,被配置为检测电源 从电源单元向光学写入单元提供的电力的状态以及输出电源信息或电力切断信息;电力切断信息保持单元,被配置为当从电源输出电力切断信息时保持电力切断信息 状态检测器和被配置为基于由电力切断信息保持单元保持的电力切断信息来感测由电源单元提供的电力的电源状态的功率传感器。

    Image forming method for increasing resolution in reverse mode
    7.
    发明授权
    Image forming method for increasing resolution in reverse mode 有权
    用于在反向模式下增加分辨率的成像方法

    公开(公告)号:US09516192B2

    公开(公告)日:2016-12-06

    申请号:US14024003

    申请日:2013-09-11

    IPC分类号: H04N1/40

    CPC分类号: H04N1/40068

    摘要: An image forming apparatus comprising: a resolution conversion unit configured to convert the resolution of a pixel provided by input image data; a gradation conversion unit configured to perform matrix conversion onto the pixel; and a writing unit configured to perform a write operation, wherein, in the normal mode, the gradation conversion unit performs matrix conversion onto the pixel with reference to the gradation conversion table for the normal mode, and the writing unit performs the write operation of the pixel in a normal order that is the order image data being input into the image forming apparatus, and in the reverse mode, the gradation conversion unit performs matrix conversion onto the pixel with reference to the gradation conversion table for the reverse mode, and the writing unit performs the write operation of the pixel in a reverse order opposite to the normal order.

    摘要翻译: 一种图像形成装置,包括:分辨率转换单元,被配置为转换由输入图像数据提供的像素的分辨率; 灰度转换单元,被配置为对所述像素执行矩阵转换; 以及写入单元,被配置为执行写入操作,其中在所述正常模式中,所述灰度转换单元参照用于所述正常模式的灰度转换表,对所述像素执行矩阵转换,并且所述写入单元执行所述写入操作 以顺序图像数据输入到图像形成装置中的正常顺序的像素,并且在反向模式中,灰度转换单元参照用于反向模式的灰度转换表,对像素执行矩阵转换,并且写入 单元以与正常顺序相反的相反顺序执行像素的写入操作。

    OPTICAL WRITING DEVICE, IMAGE FORMING APPARATUS, AND METHOD OF CONTROLLING OPTICAL WRITING DEVICE
    10.
    发明申请
    OPTICAL WRITING DEVICE, IMAGE FORMING APPARATUS, AND METHOD OF CONTROLLING OPTICAL WRITING DEVICE 有权
    光学写入装置,图像形成装置以及控制光学写入装置的方法

    公开(公告)号:US20140139607A1

    公开(公告)日:2014-05-22

    申请号:US13683248

    申请日:2012-11-21

    IPC分类号: B41J2/435

    摘要: An optical writing device is configured to form electrostatic latent images on a plurality of photosensitive elements by a plurality of light sources. The optical writing device includes: an image-data acquiring section that acquires image data; and a light-source control section that performs light-emission control on the light source based on pixel data generated from acquired image data, and also performs a neutralization process on the photosensitive element by controlling the light source to expose the photosensitive element to light. In the neutralization process, the light-source control section divides a period during which light-on/off control can be performed on the light source, into sub-periods based on pixel data input to the light-source control section, and causes the light sources to be lit in any one of the sub-periods so as to always place at least one of the plurality of light sources in a light-off state.

    摘要翻译: 光学写入装置被配置为通过多个光源在多个光敏元件上形成静电潜像。 光写入装置包括:图像数据获取部,其获取图像数据; 以及光源控制部,其基于从所获取的图像数据生成的像素数据对光源进行发光控制,并且还通过控制光源将光敏元件曝光以对光敏元件进行中和处理。 在中和处理中,光源控制部根据输入到光源控制部的像素数据,将能够对光源进行点亮/熄灭控制的期间分割成子周期, 在任何一个子周期中要点亮的光源,以便总是将多个光源中的至少一个光源置于熄灭状态。