1. Ink Materials Department, Ohkuchi Electronics Co., Ltd., Isa, Kagoshima 895-2501, Japan
2. Materials Laboratories, Sumitomo Metal Mining Co., Ltd., Ome, Tokyo 198-8601, Japan
3. Department of Computer-Aided Engineering and Development, Sumitomo Metal Mining Co., Ltd., Niihama, Ehime 792-0001, Japan
4. Ichikawa Research Center, Sumitomo Metal Mining Co., Ltd., Ichikawa, Chiba 272-8588, Japan