Patent ID: 7376368
Filing Date: 2008-05-20
Classification: G01N,G03G

Abstract:
1. A water content determination apparatus for determining a water content in a medium conveyed in an image forming apparatus, the water content determining apparatus comprising: an electrostatic capacitance region positioned in a path where the medium is conveyed in the image forming apparatus; a detection device that outputs a first signal while the medium is absent in the electrostatic capacitance region and a second signal while the medium is present in the electrostatic capacitance region; a temperature determination device that determines the temperature in said image forming apparatus based on the first signal output by said detection device while the medium is absent in the electrostatic capacitance region; and a water content determination device that determines the water content in the medium based on the second signal output by said detection device while the medium is present in the electrostatic capacitance region, and based on the temperature determined by said temperature determination device.