A development apparatus 8 has developer transport members 26 and 27
respectively contained in containers 22 and 23 and transporting developer
while stirring the developer and passing the developer to each other at a
passing portion 41 and a passing portion 42, thereby causing the
developer to circulate in a developer tank 21. The passing portion is
formed at a location of a partition 21c adjacent to a developer
discharging mechanism 34 and the passing portion 42 is formed at a
location of the partition 21c away from the developer discharging
mechanism 34. The passing portions 41 and 42 have configurations in which
a transport force acting on the developer at the passing portion 41 is
greater than the transport force acting on the developer at the passing
portion 42.