Oblon, McClelland, Maier & Neustadt, L.L.P.
Image forming apparatus
An image forming apparatus includes a latent-image bearing body, a charging unit, a latent-image writing unit, a development unit, a development power, and a bias control unit. After a start of an image forming operation, the bias control unit performs a process of constantly maintaining an output of a development bias at an adjustment bias value. The adjustment bias value is a central value in a periodic fluctuation range of the output of the development bias. At a timing at which a difference of the development bias from the adjustment bias value in the periodic fluctuation range is less than or equal to a predetermined threshold value, the bias control unit performs switching from the process of constantly maintaining the output of the development bias at the adjustment bias value to a process of periodically changing the output of the development bias based on development bias control data.
Ricoh Company, Ltd.
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inventional additional inventional additional
Satoshi Tetsuya Shingo Shinichi Shuji Yuuichiroh Keita
Kaneko Muto Suzuki Akatsu Hirai Uematsu Gotoh