Magnetic brush developer unit for photocopier

Details Magnetic brush developer unit for photocopier Magnetic brush developer unit for photocopier

G - Physics

03

G

32/12.08

G03G 15/09 (2006.01)

Patent

CA 1162040

ABSTRACT "MAGNETIC BRUSH DEVELOPER UNIT FOR PHOTOCOPIER" A magnetic brush developer unit has a toner sump below the level of the magnetic brush supporting roller-shell combination and a magnetic pump rotor rotatable in the bottom of the sump to agitate toner and to return toner to a location from which it is attracted onto the shell of the magnetic brush roller. A scraper blade is effective to remove substantially all the circulating brush-forming toner from the shell and to cause at least a part of the removed toner to fall into the sump to be pumped back up by the magnetic pump rotor. An optional second scraper blade, directed in the opposite direction from that of the first scraper blade, removes any lumps of agglomerated toner which may be moving countercurrent to the main magnetic brush-forming toner mass.

373822

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