(57) A magnetic brush development apparatus in which a developer containing magnetic powder
therein is attracted to a non-magnetic support member having a magnet (22) therein,
and said developer attracted to said non-magnet support member is brought into contact
with a latent image bearing member (23) for developing said latent electrostatic image;
said magnet has substantially one magnetic pole portion capable of producing a magnetic
field having a plurality of peaks in the intensity of said magnetic field in said
development section, one magnet (11, 12, 13, 16) including a recess portion being
disposed adjacent said non-magnetic support member (10).
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