Magnetic brush development apparatus for high-speed copiers

Details Magnetic brush development apparatus for high-speed copiers Magnetic brush development apparatus for high-speed copiers

G - Physics

03

G

32/12.09

G03G 15/09 (2006.01)

Patent

CA 1193429

- 0 - MAGNETIC BRUSH DEVELOPMENT APPARATUS FOR HIGH-SPEED COPIERS Abstract of the Invention An electrographic development station is disclosed which includes three magnetic brushes which sequentially apply toner to an electrostatic image on a moving photoconductor. The two upstream brushes rotate counter-current with respect to the movement of the photoconductor and have magnetic fields which overlap so that developer is carried from one brush to the other. The third magnetic brush rotates co-current with regard to such photoconductor movement. The two counter-current brushes apply a large quantity of toner to an electrostatic image on the photoconductor and the co-current brush applies a sufficient amount of toner to develop any incompletely developed portions of an electrostatic image.

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