Electrophotography – Image formation – Development
Reexamination Certificate
2011-03-08
2011-03-08
Gray, David M (Department: 2852)
Electrophotography
Image formation
Development
C399S260000
Reexamination Certificate
active
07904001
ABSTRACT:
A developing unit containing developer including carrier and toner and developing a latent image formed on an image carrier is disclosed. The developing unit includes multiple conveyor members configured to convey the contained developer in respective longitudinal directions so as to form a circulation channel; a supply part configured to supplement the carrier in the developing unit; a discharge part configured to discharge a first part of the contained developer outside the developing unit; and a bypass channel configured to cause a second part of the developer to return to the upstream side of the circulation channel without passing a position where the discharge part is provided.
REFERENCES:
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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.
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Machine English translation of JP2000112238.
Machine English Translation of JP2006323238.
U.S. Appl. No. 12/060,606, filed Apr. 1, 2008, Nakayama, et al.
Fujinuma Yoshitaka
Kubo Tatsuya
Nakayama Masayoshi
Tateyama Susumu
Gray David M
Lactaoen Billy J
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
Ricoh & Company, Ltd.
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