It has been difficult to make product differentiations from standpoints on function and quality because each manufacturer has had the same level of manufacturing technologies. In order to provide attractive products for customers, it is essential to product emotional products satisfying a specified target level of KANSEI and preference of restricted customers. Taguchi method is effective for robust design of product functions but it is uncertain for design of product forms. In this paper, Taguchi method is applied for robust form design satisfying a specified KANSEI and preference of restricted customers by proposing and introducing the original S/N ratio. The effectiveness of the proposed form design method is verified by experiments based on questionnaires.

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