In a special prize mode, a left pattern belt 12 is rotated at a low speed and the remaining two are rotated at a high speed in dividually at constant speed (figure 8 (a), thin line is low speed and thick line is high speed). 特賞モードでは、左の図柄ベルト12は低速で、残り2本は高速でそれぞれ定速回転させる(図8(a)、細線は低速、太線は高速)。 - 特許庁