Developer powder supply in magnet brush development

Coating apparatus – With means to apply electrical and/or radiant energy to work... – With electromagnetic and/or electrostatic removal of...

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118657, 430122, G03G 1309

Patent

active

041933761

ABSTRACT:
A developer powder supply means is disposed within a developer reservoir for supplying developer powder to a magnet brush developing roller which is placed adjacently to a drum surface carrying an electrostatic latent image formed thereon. The developer powder supply means comprises a stationary sleeve and a rotatable cylindrical magnet enclosed by the stationary sleeve. The rotatable cylindrical magnet includes a magnet shunt means or has an odd number of magnetic poles to produce distorted distribution of the magnetic field. The stationary sleeve has an extended portion which is placed above the rotatable cylindrical magnet, where the magnetic field established by the rotatable cylindrical magnet does not effect the developer powder.

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