Oblon, Spivak, McClelland, Maier & Neustadt, P.C.
Image forming apparatus with toner housing container which promotes efficient toner supply
 An image forming apparatus is loaded with a toner housing container which houses toner and has an opening. A lower portion of the toner housing container is knocked with rotation of the toner housing container so that toner on an interior wall of the toner housing container is moved. 
Ricoh Company, Ltd.
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inventional additional additional
Hideo Shigeru
Yoshizawa Yoshiki