Patent ID: 8300282

Claim:
An image reading apparatus comprising: an image reading portion configured to move in a predetermined direction, the image reading portion comprising an image reading sensor configured to read an image on a sheet; a sheet feeder configured to feed the sheet; a first transparent member having a reference surface configured to support the sheet thereon; and a second transparent member configured to contact the sheet fed by the sheet feeder, the image reading portion moving along a lower surface of the second transparent member, wherein the second transparent member is positioned such that a portion of the second transparent member overlaps a portion of the first transparent member as viewed from a direction perpendicular to the reference surface, and such that the image reading portion reads the image on the sheet at a first position through the first transparent member, not through the second transparent member; and reads the image on the sheet at a second position through the second transparent member, not through the first transparent member, wherein the image reading portion is configured to move along a lower surface of the first transparent member and to move along a lower surface of the second transparent member.