Electrophotography – Image formation – Fixing
Reexamination Certificate
2011-08-09
2011-08-09
Gray, David M (Department: 2852)
Electrophotography
Image formation
Fixing
C399S342000, C399S407000, C430S124130, C430S124200
Reexamination Certificate
active
07995959
ABSTRACT:
A gloss-imparting method that includes (a) applying heat and pressure to one side of a recording material having an image of toner formed on both sides, and fixing the image to the one side of the recording material; (b) cooling the one side of the recording material; (c) applying heat and pressure to the other side of the recording material, and fixing the image to the other side of the recording material; and (d) cooling the other side of the recording material, in the step (a), the fixing being performed such that a value of exp(−T·tan δ0) will be approximately 0.85 or less, where tan δ0is a loss tangent of the toner when measured by dynamic viscoelastic measurement at a frequency of approximately 1 rad/sec at approximately the same temperature as a fixing temperature of the step (a), and T is a fixing time in the step (a).
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Nakamura Satoshi
Nogami Yutaka
Fuji 'Xerox Co., Ltd.
Gray David M
Morgan & Lewis & Bockius, LLP
Wong Joseph S
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