Electrophotography – Internal machine environment – Forced air circulation
Reexamination Certificate
2006-07-14
2009-06-09
Gray, David M (Department: 2852)
Electrophotography
Internal machine environment
Forced air circulation
C399S098000
Reexamination Certificate
active
07546058
ABSTRACT:
A partition is provided to isolate a space from outside thereof, the space encompassing a space where an image holding member, a developing device, a charging device, a transfer device, and a fixing device. The isolated space is under reduced pressure. This allows the image forming apparatus to avoid negative effect caused by humidity change.
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Sigma Hi-Chemical Inc.; “Magnetic Fluid”; 2006 (http://www.sigma-hc.co.jp/english/magnetic—fluid.html).
Ishii Hiroshi
Katoh Atsuyuki
Gray David M
Renner , Otto, Boisselle & Sklar, LLP
Roth Laura K
Sharp Kabushiki Kaisha
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