Patent ID: 8687245

Claim:
An image reading apparatus, comprising: a first transparent section made of a transparent material and configured to receive placement of a first original sheet on an upper surface thereof; a second transparent section made of a transparent material and configured to receive a second original sheet, conveyed by a sheet conveyer, in contact with and passing over an upper surface thereof; a reader unit comprising a plurality of light receiving elements arranged along a main scanning direction, the reader unit configured to be: movable in a sub-scanning direction orthogonal to the main scanning direction; movable in a first lower area below the first transparent section and in the sub-scanning direction along the first transparent section to read an image formed on the first original sheet received on the upper surface of the first transparent section; and maintained in a second lower area below the second transparent section to read an image formed on the second original sheet conveyed by the sheet conveyer; a white reference member, arranged in an image readable position where the reader unit is able to read an image of the white reference member, the image of the white reference member read by the reader unit being recognized as a reference white color; a light reductive member arranged on an inner bottom plane of a casing accommodating the reader unit and configured to reduce an amount of incident light to be reflected on the inner bottom plane of the casing and to be directed to irradiate the reader unit, wherein the light reductive member is configured to reduce the amount of incident light, when the incident light passes through the second transparent section and reaches the inner bottom plane of the casing while the reader unit is in the image readable position, and wherein the light reductive member is located at a position, other than a specified position, while the reader unit is in the image readable position, wherein the specified position is located further from the reader unit than a position directly below the second transparent section.