The imaging apparatus 5, wherein said scanning {TAIL ~ direction} of said irradiation apparatus of the energy beam is inclined against the rotation axis of said attaching {HEAD ~ member} substantially at an angle corresponding to a ratio of a scanning speed of said scanning means to a peripheral speed of the surface of the imaging medium wound around said attaching member 
The imaging apparatus 5 , wherein said scanning { TAIL ~ direction } of said irradiation apparatus of the energy beam is inclined against the rotation axis of said attaching { HEAD ~ member } substantially at an angle corresponding to a ratio of a scanning speed of said scanning means to a peripheral speed of the surface of the imaging medium wound around said attaching member
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