Evaluation of “Jiai” of Large “Echizen Washi” Japanese Traditional Paper

In the paper of the world, there is a word “Jiai” the evaluation criteria of the paper. It is expressed as “Jiai is good” a good paper. Fiber dispersion state of the “Jiai”, Unevenness is felt visually when the light is transmitted, or it refers to the characteristic expressions such as uniformity of the paper. In general, the Japan Federation of Printing Industries” Symmetry degree of fibrous tissue that make up the paper. Look through the paper on the entire surface is a good thing symmetry “Jiai”. That there is a partial thickness thin non-uniformity is bad “Jiai”. It is defined as. Among the evaluation of “Echizen Washi” Japanese traditionalpaper, the total thickness of the paper refers to the uniformity of such density. In this experiment, the method of evaluation of handmade “Washi” Japanese traditional paper, Comparative study the evaluation criteria, Whether to the evaluation of what kind of Japanese paper by evaluators for the purpose.