Patent ID: 8879082

Claim:
An image reading apparatus, comprising: an original document platform having an upper surface on which an original document is placed; a frame which supports the original document platform; a reflection carriage which is arranged inside the frame, includes a mirror for reflecting light reflected from the original document after being irradiated onto the original document, and is moved in a first direction along a sub-scanning direction with respect to the original document; a drive unit which generates drive force for moving the reflection carriage in the first direction; a wire which receives the drive force from the drive unit and moves the reflection carriage in the first direction; a pulley around which the wire is wound; a slide member which is installed on the reflection carriage, rotatably supports the pulley, and slidably moves in the first direction with respect to the reflection carriage; a projecting section which is provided to project in a second direction that intersects with the first direction in a plane in which the reflection carriage moves, on one of the reflection carriage and the slide member; and a guide section against which the projecting section abuts, the guide section being provided to extend in the first direction on the other of the reflection carriage and the slide member, on which the projecting section is not provided, wherein a front end of the projecting section has a hemispherical shape to thereby make point contact with the guide section.