Patent ID: 9294648
Filing Date: 2016-03-22
CPC Classification: H04N

Claim Text:
1. An image reading device comprising: a document table having a document read area; an illumination unit that includes a light source configured to illuminate the document read area, and a light-guiding body configured to allow light from the light source to be incident on both end portions extending in a main-scanning direction and to scatter or reflect the light to be emitted toward the document read area; an arc-shaped portion that is formed at both end portions of the light-guiding body; a carriage that supports the illumination unit to be movable in a sub-scanning direction; a hold-down member that holds down the both end portions of the light-guiding body towards the carriage and regulates movement of the light-guiding body in the main-scanning direction; and a photoelectric conversion unit configured to receive reflected light from a document in the document read area illuminated by the illumination unit, and photoelectrically convert the light to output an electric signal, wherein the light-guiding body of the illumination unit has a first surface configured to allow light from the light source to be emitted toward the document read area, a second surface adjacent to the first surface and configured to allow the light from the light source to be emitted in a direction different from the direction of the light emitted from the first surface, and a third surface that faces the second surface and has a light scatter surface, and wherein the arc-shaped portion is formed at both end portions of the second surface.