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    • 1. 发明授权
    • Image forming apparatus that changes a developing bias or surface potential
    • 改变显影偏压或表面电位的成像装置
    • US09482995B2
    • 2016-11-01
    • US14011010
    • 2013-08-27
    • Masahiko Hayakawa
    • Masahiko Hayakawa
    • G03G15/16G03G15/06G03G15/00
    • G03G15/1675G03G15/065G03G15/50
    • An image forming apparatus includes an image carrying member, a developer carrying member configured to carry developer to be supplied to the image carrying member, a transfer member configured to transfer a developer image formed on the image carrying member to a sheet passing between the image carrying member and the transfer member, a detector configured to detect a temperature, and a control device. The control device is configured to change, in response to a sheet interval, a developing bias to be applied to the developer carrying member from a first developing bias to a second developing bias at a changing rate based on a temperature detected by the detector, the changing rate being an amount of change in the developing bias per unit time based on the temperature.
    • 图像形成装置包括图像承载构件,构造成承载提供给图像承载构件的显影剂的显影剂承载构件,被配置为将形成在图像承载构件上的显影剂图像转印到通过图像承载构件 构件和转印构件,被配置为检测温度的检测器和控制装置。 控制装置被配置为响应于纸张间隔,以基于由检测器检测到的温度的变化率,将施加到显影剂承载构件的显影偏压从第一显影偏压改变为第二显影偏压, 变化率是基于温度的每单位时间的发展偏差的变化量。
    • 2. 发明申请
    • Image Forming Apparatus
    • 图像形成装置
    • US20140056604A1
    • 2014-02-27
    • US14011010
    • 2013-08-27
    • Masahiko HAYAKAWA
    • Masahiko HAYAKAWA
    • G03G15/00G03G15/16G03G15/08
    • G03G15/1675G03G15/065G03G15/50
    • An image forming apparatus includes an image carrying member, a developer carrying member configured to carry developer to be supplied to the image carrying member, a transfer member configured to transfer a developer image formed on the image carrying member to a sheet passing between the image carrying member and the transfer member, a detector configured to detect a temperature, and a control device. The control device is configured to change, in response to a sheet interval, a developing bias to the applied to the developer carrying member from a first developing bias to a second developing bias at a changing rate based on a temperature detected by the detector, the changing rate being an amount of change in the developing bias per unit time based on the temperature.
    • 图像形成装置包括图像承载构件,构造成承载提供给图像承载构件的显影剂的显影剂承载构件,被配置为将形成在图像承载构件上的显影剂图像转印到通过图像承载构件 构件和转印构件,被配置为检测温度的检测器和控制装置。 控制装置被配置为响应于纸张间隔,以基于由检测器检测到的温度的变化速率将施加到显影剂承载构件的显影偏压从第一显影偏压改变为第二显影偏压, 变化率是基于温度的每单位时间的发展偏差的变化量。
    • 4. 发明授权
    • Image forming apparatus which can suppress a reverse transfer when executing monochrome printing
    • 在执行单色打印时可以抑制反向传送的图像形成装置
    • US08606127B2
    • 2013-12-10
    • US13040582
    • 2011-03-04
    • Masahiko Hayakawa
    • Masahiko Hayakawa
    • G03G15/00G03G15/02G03G15/16
    • G03G15/50G03G15/0189G03G15/0194G03G15/1605G03G2215/0119G03G2215/0193
    • An image forming apparatus for printing an image on a medium, including: a first image carrier; a second image carrier disposed downstream of the first image carrier in a traveling direction of the medium; a first charging member configured to charge the first image carrier; a second charging member configured to charge the second image carrier; and a control unit configured to execute a monochrome printing mode in which a monochromic image is formed on the medium using the first image carrier and the first charging member and a color printing mode in which a color image is formed on the medium using the second image carrier and the second charging member. In the monochrome printing mode, the control unit makes an absolute value of an electric surface potential of the second image carrier larger than an absolute value of an electric surface potential of the first image carrier.
    • 一种用于在介质上打印图像的图像形成装置,包括:第一图像载体; 第二图像载体,设置在所述介质的行进方向上的所述第一图像载体的下游; 配置为对所述第一图像载体进行充电的第一充电部件; 配置为对所述第二图像载体进行充电的第二充电部件; 以及控制单元,被配置为执行单色打印模式,其中使用所述第一图像载体和所述第一充电构件在所述介质上形成单色图像,并且使用所述第二图像在所述介质上形成彩色图像的彩色打印模式 载体和第二充电构件。 在单色打印模式中,控制单元使得第二图像载体的电表面电位的绝对值大于第一图像载体的电表面电位的绝对值。