Oblon, Spivak, McClelland, Maier & Neustadt
Image forming apparatus with toner recycling device
 An image forming apparatus capable of collecting a toner remaining on an image carrier after image transfer and conveying the collected toner to a developing unit to reuse it. A toner supplement roller and a toner conveyor are so controlled as to maintain the supplement of a fresh toner from a hopper to the developing unit and the supplement of the collected toner from the toner conveyor to the developing unit in a ratio lying in a predetermined range. 
Ricoh Company, Ltd.
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inventional inventional inventional
Hisao Mayumi Shunji Shigeru Hiromitsu Shinji
Murayama Yoshida Kato Watanabe Takagaki Kato