| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an overhead type scanner capable of protecting an optical system at a fall. <P>SOLUTION: An overhead type scanner has: a main body 10; a rotary unit 20 freely rotatably supported around a rotation axis X to the main body; an imaging device 22 mounted on the rotary unit and reading a reading medium S placed on a placing surface 2 provided downward in a vertical direction, of the rotary unit; a light source 21 irradiating the reading medium with light; a driving device fluctuating (Y1) the rotary unit around the rotation axis to a placing side where the reading medium is placed to a standby position where the imaging device does not perform reading of the reading medium; and posture change detection means 32 detecting a posture change of the main body. When it is determined that the main body will fall on the basis of the posture change at the time when the rotary unit is at a reading possible position where the imaging device can perform reading of the reading medium, the driving device fluctuates the rotary unit toward the standby position. <P>COPYRIGHT: (C)2013,JPO&INPIT |
