Recent information society, very thin flexible materials such as paper, thin films we call web are used as a media of information, and then they are transported mainly by using friction between web and steel rollers. Therefore, it is necessary to understand the frictional characteristics of them. In this paper, kinetic friction characteristics between paper and steel are investigated experimentally. In the experiment, the tow types of test rigs, the high speed type and low speed type friction test rig, are used for a wide range of sliding speed and humidity. As the result of measurements, it is confirmed that the friction characteristics with sliding velocity and humidity are significant.