参考文献

Satoh, Motohide; Aramaki, Hisateru; Nakamura, Hiroshi; Inoue, Masafumi; Kawakami, Hiroshi; Shinkai, Hisashi; Matsuzaki, Yuji; Yamataka, Kazunobu Patent: US2006/84665 A1, 2006 ; Location in patent: Page/Page column 70 ;