Developing apparatus

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

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355251, G03G 1509

Patent

active

055257526

ABSTRACT:
A developing device for developing an electrostatic latent image includes a rotatable developer carrying member for carrying a developer composed of toner particles and magnetic carrier particles, wherein the developer carrying member rotates through a supply position where the developer is supplied to a surface of the developer carrying member, a regulating position where a regulating member for regulating a thickness of a layer of the developer on the surface is disposed, a developing position where the electrostatic latent image is developed, and a removing position for removing the developer remaining on the surface after a developing operation, in the order named. A stationary magnet is disposed in the developer carrying member. The magnet includes a developing magnetic pole for forming a magnetic field at the developing position, and a plurality of conveying magnetic poles disposed between the supply position and the regulating position, wherein a peak of magnetic flux density of each of the conveying magnetic poles is 10-49% of a peak of the magnetic flux density of the developing magnetic pole.

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