Patent ID: 9699353
Date: 2017-07-04
CPC Classifications: H04N

Claim:
1. An image reading device comprising: a photoelectric conversion unit which includes an image reading sensor which converts light from an imaging position into image data and a lighting unit in which an imaging position is irradiated with light; a white reference plate which has a reading range which is a white reference value; a rotation unit which rotates the photoelectric conversion unit so as to come to an angle at which a plurality of portions in the reading range of the white reference plate become imaging positions; a memory which stores a rotation angle setting value for rotating the photoelectric conversion unit by the rotation unit; a control unit which sets a white reference value using a plurality of pixels of the white reference plate which are read using the photoelectric conversion unit which is rotated using the rotation unit based on a rotation angle setting value; and wherein the control unit adjusts a light intensity of light which is emitted from the lighting unit according to a rotation of the photoelectric conversion unit using the rotation unit.