1. Conservation Science Laboratory of the Graduate School of Conservation , Tokyo University of the Arts , Tokyo , Japan
2. Handakyuseido Co., Ltd. , Tokyo , Japan
3. Div. of Natural Resources and Eco-Materials , Tokyo University of Agriculture and Technology , Tokyo , Japan
4. Ehime Prefectural Paper Technology Center , Ehime , Japan
5. Kochi Prefectural Paper Technology Center , Kochi , Japan