Patent ID: 8503047

Claim:
An image reading device, comprising: a transparent board having a surface on which an original document is placed; a scanner unit provided below the transparent board and to move in a main scanning direction and a sub-scanning direction to read the original document into image data, the scanner unit including: a light source to irradiate light to the original document via the transparent board; and a deflector to deflect reflected light reflected from the original document to a photoelectrical conversion element, the conversion element converting the reflected light into the image data of the original document; and a controller to control the scanner unit to read a section of the original document that corresponds to an image reading area specified by a user when a user instruction for setting the image reading area is received, the controller is further configured to: determine whether a user instruction is received, which specifies an image reading start position in the sub-scanning direction from which the scanner unit starts reading; output a control signal to cause the scanner unit to move to the image reading start position specified by the user instruction and to stay at the image reading start position until a further user instruction is received; and output a control signal to cause the scanner unit to start reading the section of the original document from the image reading start position when a user instruction for starting image reading is received.