Patent ID: 8164804

Claim:
An image reading apparatus for reading an image formed on an original, while conveying the original, comprising: a contact glass having an original conveying surface on which an original reading position is defined and on which the original is guided; an image sensor configured for movement of a reading position thereof between a position opposed to the original reading position and a position opposed to a reference member reading position, and configured to read, through said contact glass, the image formed on the original guided on the original conveying surface; and a shading correction reference member as a white reference for said image sensor, wherein said shading correction reference member comprises a white film formed on an original conveying path-side surface of said contact glass by a printing method or a coating method, and an original contact preventing member for preventing said white film from being worn by contact with a conveyed original, and wherein said original contact preventing member and said white film are fixed to each other using a substantially white fixing member, which makes said white film look even whiter as viewed through said contact glass from the side of said image sensor.