Patent ID: 7639404

Claim:
An image scanner, comprising: a transparent plate having an original placing surface for placing an original thereon; a scanning device that irradiates the original with light from a light source and scans reflected light from the original, the scanning device being disposed opposite to the original placing surface with respect to the transparent plate; a driving device that reciprocates the scanning device along the transparent plate; a positioning member that positions the original placed on the original placing surface of the transparent plate; a light absorbing portion that absorbs ambient light entering to a transparent plate side of the positioning member; a white reference portion provided to the transparent plate side of the positioning member, wherein the transparent plate is a single transparent plate, wherein the positioning member is disposed on the transparent plate at a position that divides the transparent plate into a plurality of areas, and wherein the light absorbing portion and the white reference portion are adjacently arranged on the transparent plate side of the positioning member.