Brush toning means for electrophotographic copier apparatus

Details Brush toning means for electrophotographic copier apparatus Brush toning means for electrophotographic copier apparatus

G - Physics

03

G

314/7

G03G 15/09 (2006.01) G03G 15/00 (2006.01) G03G 15/22 (2006.01)

Patent

CA 1210442

ABSTRACT OF THE INVENTION A toning system for an electrostatic copying machine capable of developing a latent charge image carried therepast on an electrophotographic member moved through an endless path including an arcuate section. A rotary magnetic brush is journalled for rotation on an axis parallel to the arcuate section. A toner layer is applied to at least a portion of the circumference of the brush and brought into engagement with the electrophotographic member at the arcuate section. A hopper carries a quantity of toner and a cylindrical formation is connected to the bottom of a hopper carrying a quantity of toner and spaced from and encompasses all but a segment of the volume occupied by said brush. The hopper has a wall which provides a bottom edge spaced from the surface of said brush to form a metering blade adjacent said segment. The segment extends from the blade to the electrophotographic member, the brush being rotatable in a direction so that a layer of toner is metered onto the brush and is carried through said segment into engagement with said electrophotographic member.

454525

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