Electrophotography – Internal machine environment – Humidity
Reexamination Certificate
2008-05-20
2008-05-20
Gray, David M. (Department: 2852)
Electrophotography
Internal machine environment
Humidity
C399S044000, C324S694000, C324S695000
Reexamination Certificate
active
11364854
ABSTRACT:
An image forming apparatus has a water content determination apparatus that can precisely determining a water content in a medium regardless of an environment where the image forming apparatus is installed. The water content determination apparatus has a detection device that outputs a first signal while the medium is absent in an electrostatic capacitance region formed in a path where the medium is conveyed and outputs a second signal while the medium is present in the electrostatic capacitance region. The temperature in the image forming apparatus is determined based on the first signal. The water content in the medium is determined based on the second signal and the temperature determined by the temperature determination device.
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Kakutani Toshifumi
Nagata Naohisa
Oka Yushi
Sobue Fumitaka
Sugiura Takashi
Canon Kabushiki Kaisha
Gray David M.
Rossi Kimms & McDowell LLP
Service Kristofferson
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