A development device includes a developer bearing member including a
plurality of magnetic poles for bearing a two component developer, and
rotating so that the toner is supplied to a latent image bearing member,
a supply and conveyance path including a member configured to convey the
developer in a first direction, a regulation member configured to
regulate the developer on the developer bearing member, a collection and
conveyance path including a member configured to convey the developer in
a second direction parallel to the first direction, arranged below the
development bearing member and at a substantially same height as the
supply and conveyance path, an agitation and conveyance path including a
member configured to convey the developer in a third direction opposite
to the first direction, arranged at a substantially same height as the
collection and conveyance path, and partition members partitioning the
three paths.