Electrophotography – Image formation – Development
Reexamination Certificate
2008-05-30
2011-10-11
Beatty, Robert (Department: 2852)
Electrophotography
Image formation
Development
C399S256000
Reexamination Certificate
active
08036576
ABSTRACT:
A developing device including a developing unit configured to develop an electrostatic latent image formed on a latent image bearing member with a developer comprising a toner and a carrier, and a circulation unit configured to collect the developer from the developing unit and return the developer to the developing unit. The circulation unit includes a container including a main body having an inverted cone shape, a supply opening provided in a top thereof, and a discharge opening provided in a bottom thereof, configured to hold a part of the developer and provided on an upstream side from the developing unit relative to a direction of circulation of the developer. The container includes a plurality of agitation members configured to agitate the developer collected from the developing unit and fresh toner so that a plurality of flows of the developer is produced in the container.
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Iwata Nobuo
Katoh Natsumi
Matsumoto Jun-ichi
Ohmura Tomoya
Beatty Robert
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
Ricoh Company Limited
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