Non-contact condensation detection method and the non-contact condensation detecting device and paper deformation suppression method and image forming apparatus using it

摘要

PROBLEM TO BE SOLVED: To perform noncontact detection on gas condensation to the surface of an object and transpiration, and to more accurately predict dew formation on the surface of the object, by speedily detecting the process of dew formation on the surface of the object.;SOLUTION: Temperature and humidity sensors 4a and 4b, for measuring the temperature and humidity of a gas in ambient atmosphere, are arranged at intermediate locations at a distance from the vicinity of the surface of the object 1, and a temperature and humidity sensors 4c is arranged separated by a distance from the surface of the object 1. A flow sensor is provided for measuring the flow direction or the flow velocity of the gas in the ambient atmosphere of the surface of the object. The state of distribution and transportation process of the ambient atmosphere to the surface of the object 1 are determined, on the basis of the measurement results of the temperature and humidity sensors 4a-4c and the flow sensor 5 for detecting the behavior of the adsorption and condensation of the gas of the ambient atmosphere on the surface of the object 1 and the behavior of transpiration of the liquid which has condensed on the surface of the object.;COPYRIGHT: (C)2007,JPO&INPIT