Patent ID: 8711454
Filing Date: 2014-04-29
Classification: G03G,H04N

Abstract:
1. An image scanner comprising: a first light source and a second light source that irradiate, with lights, a recording medium on which an image is formed at a first inclination angle and a second inclination angle respectively; a light receiving portion that receives light reflected by the recording medium; and a reflecting portion that has a surface for measuring the amount of specular reflection light coming from the light source, the specular reflection light being included in the light received by the light receiving portion, wherein the reflecting portion includes at least two measurement surfaces provided in a longitudinal direction of the reflecting portion and one of the two measurement surfaces includes a measurement chart for measuring the amount of specular reflection light, the measurement chart including at least one reflecting surface; wherein the at least two measurement surfaces are disposed at the first inclination angle and the second inclination angle in directions of the first light source and the second light source.