Patent ID: 8830541

Claim:
An image reading apparatus for reading an original document by using regular reflection light and diffuse reflection light, comprising: a platen having a reading surface; a light source for irradiating light on said reading surface; a reflecting mirror for reflecting light reflected from said reading surface to a predetermined light path direction; a condenser lens for condensing light from said reflecting mirror; and a sensor for subjecting light from said condenser lens into photoelectric conversion; said light source comprising a first light emitter for mainly irradiating the diffuse reflection light on the original document, and a second light emitter for mainly irradiating the regular reflection light on the original document; said reflecting mirror comprising a plurality of reflecting members for reflecting light from said reading surface to a predetermined reading path direction; one of said reflecting members being arranged to be inclined at a predetermined angle with respect to said platen, and comprising a flat-shaped translucent substrate; a mirror reflecting surface for specularly reflecting light and a translucent surface transmissive for light being formed on a part of the surface of said reflecting member; said first light emitter being arranged between said platen and the side of the mirror reflecting surface of said reflecting member; and said second light emitter being arranged at the back surface side of the mirror reflecting surface of said reflecting member, wherein an irradiating angle of a center of light to be irradiated from said second light emitter to the reading surface is set to be smaller than an irradiating angle of a center of light to be irradiated from said first light emitter to said reading surface, and said second light emitter is arranged in such a way that the center of light to be irradiated on said reading surface passes through the translucent surface between the end surface of said reflecting member and said mirror reflecting surface.