Electrophotography – Image formation – Development
Reexamination Certificate
2008-10-15
2011-10-25
Gray, David (Department: 2852)
Electrophotography
Image formation
Development
C399S256000, C399S257000
Reexamination Certificate
active
08045893
ABSTRACT:
A developing device that can discharge developer by an amount of developer in the developing device increased by a carrier supplemented into the developing device includes a supply transport screw and a receiving transport screw in a top and bottom positional relationship, the rotational axes of the supply transport screw and the receiving transport screw are mutually parallel in relation to an image support member. The developing device also includes an inclined transport screw arranged at an incline between one end of the supply transport screw and an other end of the receiving transport screw. The developing device also includes a supply unit for supplying new carrier into a casing and a discharge port and discharge unit for discharging part of the developer housed in the casing to the outside, the discharge port provided on a part of the casing corresponding to an upper part of the inclined transport screw.
REFERENCES:
patent: 2007/0025773 (2007-02-01), Tateyama et al.
patent: 2007/0274742 (2007-11-01), Nakayama et al.
patent: 2007/0280744 (2007-12-01), Kubo et al.
patent: 2008/0101818 (2008-05-01), Shimojima et al.
patent: 2008/0187332 (2008-08-01), Tsuda et al.
patent: 2008/0199205 (2008-08-01), Kubo et al.
Fujinuma Yoshitaka
Kubo Tatsuya
Nakayama Masayoshi
Takeyama Susumu
Bolduc David
Gray David
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
Ricoh & Company, Ltd.
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