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    • 1. 发明申请
    • IMAGE FORMING APPARATUS
    • 图像形成装置
    • US20130177330A1
    • 2013-07-11
    • US13736979
    • 2013-01-09
    • Toshiya AOKI
    • Toshiya AOKI
    • G03G15/20
    • G03G15/2039G03G15/2028G03G2215/2029
    • A fixing device for performing a thermal fixing for fixing an unfixed image onto a recording sheet by passing the recording sheet through a fixing nip formed by a fixing rotator and a pressing member pressing the fixing rotator. The fixing device obtains a value indicating an amount of paper dust attached to the fixing rotator, and when the amount of paper dust indicated by the obtained value is equal to or larger than a permissible amount, performs a control so that a larger amount of heat is supplied to the recording sheet in the thermal fixing than when the amount of paper dust indicated by the obtained value is smaller than the permissible amount.
    • 一种定影装置,用于通过使记录片材通过由定影旋转器形成的定影辊隙和按压定影旋转器的按压构件,将未定影图像定影到记录片材上。 定影装置获得表示附着到定影转盘上的纸粉量的值,当由所获得的值表示的纸粉量等于或大于允许量时,进行控制,使得更大量的热量 在热定影中被提供给记录纸,比当所获得的值所示的纸粉量小于允许量时。
    • 3. 发明申请
    • IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD
    • 图像形成装置和图像形成方法
    • US20090310995A1
    • 2009-12-17
    • US12478055
    • 2009-06-04
    • Kanji NAKAYAMANoritoshi HAGIMOTOYuusuke OKUNOTomo KITADAToshiya AOKI
    • Kanji NAKAYAMANoritoshi HAGIMOTOYuusuke OKUNOTomo KITADAToshiya AOKI
    • G03G15/06
    • G03G15/065G03G15/0849G03G15/0862G03G15/0877G03G15/0879
    • In case new and old toners may be mixed, a developing bias is set as follows. The time is first clocked. The number of times toner is replenished from a hopper into a buffer for a clocked period is counted. If a replenishment amount per clock time is a threshold value or higher, considering that new and old toners are mixed, the setting of the developing bias is changed. An electric field intensity between a developing roller and a photoconductor is set to cause normally-charged toner to fly in an image area but not to fly in a background area. No image fogging is therefore generated in the background area. Thus, an image forming apparatus and method capable of preventing low-charged toner and oppositely-charged toner generated by mixing of new and old toners from adhering to the background area of an electrostatic latent image on the photoconductor, thereby avoiding generation of image fogging.
    • 如果新旧的调色剂可能混合,则显影偏压设置如下。 时间是第一时间。 计数将调色剂从料斗补充到缓冲器中的次数。 如果每个时钟时间的补充量是阈值或更高,则考虑到新的和旧的调色剂混合,改变了显影偏差的设定。 设置显影辊和光电导体之间的电场强度以使正常充电的调色剂在图像区域中飞行,但不在背景区域中飞行。 因此,在背景区域中不会产生图像雾化。 因此,能够防止由新旧的调色剂混合而产生的带电荷低的调色剂和相反电荷的调色剂粘附在感光体上的静电潜像的背景区域,从而避免图像起雾的形成装置和方法。