Patent ID: 7515316
Filing Date: 2009-04-07
Classification: H04N

Abstract:
1. An image reading device comprising: an original mounting portion on which an original having an image region is placed; an original reading unit movable in a reading direction for reading the image region, the image region having an image region length in the reading direction; a movement control unit controlling the original reading unit to provide an acceleration region where the original reading unit accelerates from a halted state to a moving velocity, a constant-velocity region where the original reading unit maintains the moving velocity, and a deceleration region where the original reading unit decelerates from the moving velocity to the halted state, the original reading unit reading the image region at least in the constant-velocity region, the original reading unit starting to decelerate at a deceleration start position that is positioned between the constant-velocity region and the deceleration region; a region-length acquisition unit acquiring the image region length; a velocity setting unit setting the moving velocity of the original reading unit based on a specified image reading mode; and a deceleration-start-position setting unit setting the deceleration start position based on the moving velocity set by the velocity setting unit; wherein the deceleration-start-position setting unit includes a velocity comparison unit comparing the moving velocity set by the velocity setting unit with a reference velocity, thereby obtaining a comparison result; and wherein, if the velocity comparison unit has obtained the comparison result that the moving velocity set by the velocity setting unit is greater than the reference velocity, the deceleration-start-position setting unit sets the deceleration start position to one of a position within the image region and a position immediately downstream of the image region in the reading direction, depending on the image region length and the moving velocity set by the velocity setting unit.