Internally-balanced magnet unit. - Shigeo Hirose; Minehisa Imazato; Yoshiaki Kudo; Yoji Umetani (Adv. Robotics, 1986)

The display profiling method with eyes and colormatching accuracy in soft proofing. - Tohru Sugiyama; Yoshiaki Kudo (Color Imaging: Processing, Hardcopy, and Applications, 2005)

The calibration accuracy of display white point by visual calibrator under various illuminations. - Tohru Sugiyama; Yoshiaki Kudo (Color Imaging: Processing, Hardcopy, and Applications, 2006)

Improving the Color Match between Monitor and Hardcopy. - Tohru Sugiyama; Yoshiaki Kudo; Youichi Takayama (CIC, 2007)