An elongated toner box extending in a horizontal direction has a cylindrical portion where a toner discharge port is formed. A wrapping member serving as a shutter is rotatably disposed over the cylindrical portion for selectively shutting off the toner discharge port. The wrapping member has a circular...http://www.google.es/patents/US5568237?utm_source=gb-gplus-sharePatente US5568237 - Toner box having axially spaced and trapezoidal, flexible agitating members
Toner box having axially spaced and trapezoidal, flexible agitating members
