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    • 4. 发明授权
    • Image formation control based on printing rate
    • 基于打印速度的图像形成控制
    • US07672603B2
    • 2010-03-02
    • US11859263
    • 2007-09-21
    • Takeo YamamotoShigeo HataNaohisa NagataMitsuhiro OtaDaisaku Kamiya
    • Takeo YamamotoShigeo HataNaohisa NagataMitsuhiro OtaDaisaku Kamiya
    • G03G15/00
    • G03G15/5041G03G2215/00042G03G2215/0164G03G2215/0177
    • An image forming apparatus that can realize an image having adequate image quality, density and color, without provoking excessive consumption of a developer and reduction in productivity. Image formation is performed by forming a latent image on an image carrier based on image information, then developing and transferring the latent image. An image for adjustment on a portion is formed other than a portion on which the latent image is formed on the image carrier. The density of the image for adjustment is detected. Image density is adjusted based on the density of the detected image for adjustment. Image formation control is executed whereby density is adjusted when an image is formed. A printing rate that indicates the percentage of the image formation to a sheet used for image formation is calculated. When the printing rate is determined to be within a set range, the image formation control is executed at a set frequency. On the other hand, when the printing rate is determined to be outside the set range, the set frequency is changed and the image formation control is executed.
    • 可以实现具有足够的图像质量,密度和颜色的图像的图像形成装置,而不会引起显影剂的过度消耗并降低生产率。 通过基于图像信息在图像载体上形成潜像,然后显影和转印潜像来进行图像形成。 除了在图像载体上形成潜像的部分之外,还形成有用于调整部分的图像。 检测用于调整的图像的浓度。 基于检测图像的浓度调整图像浓度。 执行图像形成控制,从而在形成图像时调节浓度。 计算表示图像形成对用于图像形成的片材的百分比的打印率。 当打印率被确定在设定范围内时,以设定的频率执行图像形成控制。 另一方面,当打印率被确定在设定范围之外时,设定频率被改变并且执行图像形成控制。
    • 5. 发明申请
    • IMAGE FORMING APPARATUS AND IMAGE FORMATION CONTROL METHOD THEREOF
    • 图像形成装置及其图像形成控制方法
    • US20080075485A1
    • 2008-03-27
    • US11859263
    • 2007-09-21
    • Takeo YamamotoShigeo HataNaohisa NagataMitsuhiro OtaDaisaku Kamiya
    • Takeo YamamotoShigeo HataNaohisa NagataMitsuhiro OtaDaisaku Kamiya
    • G03G15/01
    • G03G15/5041G03G2215/00042G03G2215/0164G03G2215/0177
    • An image forming apparatus that can realize an image having adequate image quality, density and color, without provoking excessive consumption of a developer and reduction in productivity. Image formation is performed by forming a latent image on an image carrier based on image information, then developing and transferring the latent image. An image for adjustment on a portion is formed other than a portion on which the latent image is formed on the image carrier. The density of the image for adjustment is detected. Image density is adjusted based on the density of the detected image for adjustment. Image formation control is executed whereby density is adjusted when an image is formed. A printing rate that indicates the percentage of the image formation to a sheet used for image formation is calculated. When the printing rate is determined to be within a set range, the image formation control is executed at a set frequency. On the other hand, when the printing rate is determined to be outside the set range, the set frequency is changed and the image formation control is executed.
    • 可以实现具有足够的图像质量,密度和颜色的图像的图像形成装置,而不会引起显影剂的过度消耗并降低生产率。 通过基于图像信息在图像载体上形成潜像,然后显影和转印潜像来进行图像形成。 除了在图像载体上形成潜像的部分之外,还形成有用于调整部分的图像。 检测用于调整的图像的浓度。 基于检测图像的浓度调整图像浓度。 执行图像形成控制,从而在形成图像时调节浓度。 计算表示图像形成对用于图像形成的片材的百分比的打印率。 当打印率被确定在设定范围内时,以设定的频率执行图像形成控制。 另一方面,当打印率被确定在设定范围之外时,设定频率被改变并且执行图像形成控制。
    • 10. 发明授权
    • Image forming apparatus featuring a variable toner return bias applying time
    • 图像形成装置具有可变的调色剂返回偏压施加时间
    • US06529698B1
    • 2003-03-04
    • US09691170
    • 2000-10-19
    • Naohisa Nagata
    • Naohisa Nagata
    • G03G1500
    • G03G21/0064G03G15/0216G03G2221/0005
    • An image forming apparatus includes an image bearing member and a charging device for charging the image bearing member. An electrostatic image forming device selectively removes charges on the image bearing member charged by the charging device to form an electrostatic image. A developing device develops the electrostatic image with toner as a toner image. The toner image on the image bearing member is transferred by a transfer device onto a transfer material. The charging device temporarily collects residual toner after transferring the toner image. A return bias applying device applies a return bias for returning the toner collected in the charging device to the image bearing member in a nonimage forming period. The length of a return bias applying time period of the return bias applying device is variably controlled by a controller.
    • 图像形成装置包括图像承载部件和用于对图像承载部件充电的充电装置。 静电图像形成装置选择性地去除由充电装置充电的图像承载部件上的电荷以形成静电图像。 显影装置用作为调色剂图像的调色剂显影静电图像。 图像承载部件上的调色剂图像通过转印装置转印到转印材料上。 在转印调色剂图像之后,充电装置临时收集残留的调色剂。 返回偏置施加装置在非图像形成期间中施加用于将收集在充电装置中的调色剂返回到图像承载部件的返回偏置。 返回偏置施加装置的返回偏置施加时间段的长度可由控制器可变地控制。