Electrophotography – Image formation – Transfer
Reexamination Certificate
2006-07-24
2009-11-17
Lee, Susan S (Department: 2852)
Electrophotography
Image formation
Transfer
C399S299000
Reexamination Certificate
active
07620353
ABSTRACT:
An image forming apparatus and control method, the image forming apparatus including: a first image bearing body and a second image bearing body aligned to form predetermined color images; a transfer belt supported by a driving roller and a driven roller, to transfer images onto a printing medium; a first primary transfer roller installed on the opposite side of the first image bearing body, having the transfer belt in-between; a second primary transfer roller movably installed on the opposite side of the second image bearing body, having the transfer belt in-between, to engage/disengage the transfer belt with/from the second image bearing body by selectively changing the traveling track of the transfer belt; a driving unit to drive the second primary transfer roller to engage/disengage with/from the transfer belt; and a belt length adjusting unit to control the traveling distance of the transfer belt to be constant.
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Office Action issued in Chinese Patent Application No. 2007100022960 on Aug. 29, 2008.
Lee Susan S
Samsung Electronics Co,. Ltd.
Stein McEwen, LLP
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